WO2024251204A1 - 绝缘板、盖板组件、电池、注液头及注液设备 - Google Patents
绝缘板、盖板组件、电池、注液头及注液设备 Download PDFInfo
- Publication number
- WO2024251204A1 WO2024251204A1 PCT/CN2024/097789 CN2024097789W WO2024251204A1 WO 2024251204 A1 WO2024251204 A1 WO 2024251204A1 CN 2024097789 W CN2024097789 W CN 2024097789W WO 2024251204 A1 WO2024251204 A1 WO 2024251204A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sealing
- channel
- liquid injection
- cover plate
- connecting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present application relates to the field of battery technology, and in particular to an insulating plate, a cover plate assembly, a battery, a liquid injection head and a liquid injection device.
- the cover body of the power battery is usually provided with an injection hole.
- the injection hole is often sealed by setting sealing rubber particles in the injection hole.
- the industry usually requires that the thickness of the sealing rubber particles is not less than 3.5mm. In other words, the thickness of the sealing rubber particles is often greater than the thickness of the cover assembly body.
- this setting method will cause one end of the sealing rubber particle to enter the interior of the battery after the sealing rubber particle is nailed into the injection hole, occupying the battery cell setting space inside the battery, reducing the energy density of the battery cell, and compressing the battery cell, thereby reducing the safety of the battery.
- the present application provides an insulating plate.
- the insulating plate is used for a cover plate assembly of a battery, the cover plate assembly includes a cover plate body and an insulating plate, the cover plate body is provided with a liquid injection hole, and the insulating plate includes:
- a main body plate structure, the main body plate structure is arranged on one side of the cover plate body;
- the sealing structure includes a sealing part and a connecting part.
- the sealing part is arranged on one side of the main plate structure close to the cover plate body.
- the sealing part is arranged to seal the injection hole.
- the connecting part is connected between the sealing part and the main plate structure.
- the connecting part is elastic.
- the present application also provides a cover plate assembly.
- the cover plate assembly is used for a battery, and the cover plate assembly includes:
- a cover plate body wherein the cover plate body is provided with a liquid injection hole
- the insulating plate comprises a main plate structure and a sealing structure, wherein the main plate structure is arranged on one side of the cover plate body; the sealing structure comprises a sealing portion and a connecting portion, wherein the sealing portion is arranged on one side of the main plate structure close to the cover plate body, the sealing portion is arranged to seal the injection hole, the connecting portion is connected between the sealing portion and the main plate structure, the connecting portion is elastic, the main plate structure is arranged on one side of the cover plate body, the sealing portion is arranged on one side of the main plate structure close to the cover plate body, and the sealing portion can seal the injection hole.
- the present application also provides a battery.
- the battery includes a shell, a battery cell and a cover plate assembly, the cover plate assembly includes a cover plate body and an insulating plate, the cover plate body is provided with a liquid injection hole;
- the insulating plate includes a body plate structure and a sealing structure, the body plate structure is arranged on one side of the cover plate body;
- the sealing structure includes a sealing part and a connecting part, the sealing part is arranged on the side of the body plate structure close to the cover plate body, the sealing part is arranged to seal the liquid injection hole, the connecting part is connected between the sealing part and the body plate structure, the connecting part is elastic, the body plate structure is arranged on one side of the cover plate body, the sealing part is arranged on the side of the body plate structure close to the cover plate body, and the sealing part can seal the liquid injection hole;
- One side of the shell has an opening
- the battery cell is arranged inside the shell
- the cover plate assembly covers the opening
- the cover plate body is located on a side of the insulating plate away from the battery cell.
- the present application also provides a liquid injection head.
- the liquid injection head is configured to inject liquid into the interior of the battery.
- the battery includes a shell, a battery cell and a cover plate assembly.
- the cover plate assembly includes a cover plate body and an insulating plate.
- the cover plate body is provided with a liquid injection hole.
- the insulating plate includes a body plate structure and a sealing structure.
- the body plate structure is provided on one side of the cover plate body.
- the sealing structure includes a sealing portion and a connecting portion.
- the sealing portion is provided on a side of the body plate structure close to the cover plate body.
- the sealing portion is configured to seal the liquid injection hole.
- the connecting portion is connected between the sealing portion and the body plate structure.
- the connecting portion is elastic.
- the body plate structure is provided on one side of the cover plate body.
- the sealing portion is provided on a side of the body plate structure close to the cover plate body, and the sealing portion can seal the liquid injection hole.
- One side of the shell has an opening.
- the battery cell is provided inside the shell.
- the cover plate assembly covers the opening.
- the cover plate body is located on the side of the insulating plate away from the battery cell.
- the liquid injection head includes:
- a main body wherein a first channel is provided in the main body, and the main body is configured to be sealed and connected to the cover body to seal the injection hole;
- the extension part is protruding from the main body and is arranged to penetrate the injection hole.
- the top of the extension part is arranged to abut against the sealing part and enter the interior of the shell.
- the outer periphery of the top end is provided with a channel opening, and the channel opening is connected to the first channel.
- the present application also provides a liquid injection device.
- the liquid injection device includes an air extraction device, a liquid injection device and a liquid injection head, the liquid injection head is configured to inject liquid into the interior of the battery,
- the battery includes a shell, a battery cell and a cover plate assembly
- the cover plate assembly includes a cover plate body and an insulating plate, the cover plate body is provided with a liquid injection hole;
- the insulating plate includes a body plate structure and a sealing structure, the body plate structure is arranged on one side of the cover plate body;
- the sealing structure includes a sealing part and a connecting part, the sealing part is arranged on the side of the body plate structure close to the cover plate body, the sealing part is arranged to seal the liquid injection hole,
- the connecting part is connected between the sealing part and the body plate structure, the connecting part is elastic, the body plate structure is arranged on one side of the cover plate body, the sealing part is arranged on the side of the body plate structure close to the cover plate body, and the sealing part can seal the
- a main body wherein a first channel is provided in the main body, and the main body is configured to be sealed and connected to the cover body to seal the injection hole;
- extension portion is convexly arranged on the main body portion, and the extension portion is arranged to penetrate the injection hole, the top end of the extension portion is arranged to abut against the sealing portion and enter the interior of the shell, and the outer periphery of the top end is provided with a channel opening, and the channel opening is connected to the first channel;
- the air extraction device and the liquid injection device are respectively connected to the liquid injection head and are respectively connected to the first channel.
- the insulating plate, cover plate assembly, and battery provided by the present application enable the sealing structure to include a sealing portion and a connecting portion connected between the sealing portion and the main plate structure, so that the sealing portion can seal the injection hole under the support of the elastic connecting portion, and by arranging the sealing structure on the main plate structure, during the assembly process, the assembly posture of the sealing structure can be determined by determining the assembly posture of the insulating plate as a whole, thereby ensuring the assembly yield of the sealing structure, and therefore the overall thickness of the sealing structure can be relatively small, so that the sealing portion can be arranged on the side of the main plate structure close to the cover plate body.
- the sealing portion on the side of the main plate structure close to the cover plate body in other words, by arranging the sealing portion between the main plate structure and the cover plate body, the occupation of the space on the side of the main plate structure away from the cover plate body (i.e., the internal space of the battery) by the sealing structure as a whole can be reduced, thereby improving the cell energy density and safety of the battery including the insulating plate.
- the injection head and injection equipment provided by the present application are provided with an extension portion of the injection hole that can pass through the sealing portion of the insulating plate.
- the top end of the extension portion can be used to push the sealing portion against the injection hole to release the seal of the injection hole, and the top end can be made to enter the position between the cover plate body and the main plate structure, so that the channel opening on the outer periphery of the top end is connected to the gap between the cover plate body and the main plate structure, so that the interior of the battery can be evacuated and liquid can be injected through the channel opening on the outer periphery of the top end, and in this process, the sealing portion will not block the channel opening and hinder the evacuation and injection of liquid by the injection head.
- FIG1 is a schematic diagram of the three-dimensional structure of an insulation board provided in the present application.
- FIG2 is an enlarged view of point P in FIG1 ;
- FIG3 is a partial schematic diagram of the assembly structure of the insulation plate and the cover plate body provided by the present application.
- FIG4 is a partial schematic diagram of the exploded structure of the insulation plate and the cover plate body provided by the present application.
- FIG5 is a schematic diagram of the three-dimensional structure of the cover plate assembly provided in the present application.
- FIG6 is a schematic diagram of the structural decomposition of the cover plate assembly provided in the present application.
- FIG7 is a schematic diagram of the three-dimensional structure of a battery provided in the present application.
- FIG8 is a schematic diagram of the structural decomposition of a battery provided by the present application.
- FIG9 is a schematic diagram of the three-dimensional structure of the liquid injection head provided in the present application.
- FIG10 is a bottom view of the liquid injection head provided in the present application.
- Fig. 11 is a cross-sectional view along the line A-A in Fig. 10;
- FIG12 is a schematic structural diagram of the liquid injection head, the cover plate body, and the insulating plate provided by the present application (when the liquid injection head is configured to inject liquid into the battery);
- FIG13 is a schematic cross-sectional view of the structure of the liquid injection head provided in the present application (the liquid injection head realizes liquid injection by simultaneously evacuating air and injecting liquid into the battery);
- FIG. 14 is a schematic block diagram of the structure of the liquid injection device provided in the present application.
- Insulating plate 10. Main plate structure; 100. Reinforcing rib; 101. First through hole; 102. Second through hole; 11. Sealing structure; 110. Sealing part; 110a. Sealing surface; 111. Connecting part; 111a. Reduced thickness; 111b. Reduced width; 112. Alignment part; 112a. Guide surface;
- Cover plate assembly 20. Cover plate body; 200. Liquid injection hole;
- Liquid injection head 40. Main body; 400. First channel; 400a. Liquid injection channel; 400b. Air extraction channel; 401. Sealing ring; 402. Setting groove; 41. Extension; 410. Top; 410a. Top surface; 410b. Outer peripheral surface; 411. Channel opening; 411a. Liquid injection opening; 411b. Air extraction opening; 412. Second channel;
- Liquid injection equipment 50. Vacuum extraction device; 51. Liquid injection device.
- connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
- connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
- a first feature being “above” or “below” a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them.
- a first feature being “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, and the first feature having a higher horizontal height than the second feature.
- a first feature being “below”, “below” and “below” a second feature includes the first feature being directly below and obliquely below the second feature, and the first feature having a lower horizontal height than the second feature.
- the terms “upper”, “lower”, “left”, “right”, “front”, “rear” and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application.
- the terms “first” and “second” are used to distinguish in the description and have no special meaning.
- the present application provides an insulating plate 1, which is used for a cover plate assembly of a battery.
- the cover plate assembly includes a cover plate body 20 and an insulating plate 1.
- the cover plate body 20 is provided with a liquid injection hole 200.
- the insulating plate 1 includes a body plate structure 10 and a sealing structure 11.
- the body plate structure 10 is arranged on one side of the cover plate body 20.
- the sealing structure 11 includes a sealing portion 110 and a connecting portion 111.
- the sealing portion 110 is arranged on one side of the body plate structure 10 close to the cover plate body 20.
- the sealing portion 110 is arranged to seal the liquid injection hole 200.
- the connecting portion 111 is connected between the sealing portion 110 and the body plate structure 10.
- the connecting portion 111 is elastic.
- the sealing portion 110 can seal the injection hole 200 under the support of the elastic connecting portion 111. Even if the sealing portion 110 moves to release the seal of the injection hole 200 due to additional external force, when the additional external force disappears, the sealing portion 110 can automatically reset to seal the injection hole 200 under the action of the elastic force of the connecting portion 111. In other words, the sealing structure 11 can automatically seal the injection hole 200 on the side of the cover plate body 20 facing the insulating plate 1.
- the assembly posture of the sealing structure 11 can be determined by determining the overall assembly posture of the insulating plate 1.
- the sealing structure 11 set on the main plate structure 10 can be determined to be in the correct assembly posture by determining that the side of the insulating plate 1 facing the cover plate body 20 is oriented correctly. Since the insulating plate 1 is larger in size than the sealing structure 11, it is easy to confirm the overall assembly posture of the insulating plate 1 and to keep the insulating plate 1 in the correct posture for assembly, thereby making it easy to ensure the assembly yield of the sealing structure 11.
- the overall thickness of the sealing structure 11 can be relatively small, so that the sealing portion 110 can be set on the side of the main plate structure 10 close to the cover plate body 20.
- the sealing portion 110 By arranging the sealing portion 110 on the side of the main plate structure 10 close to the cover plate body 20, in other words, by arranging the sealing portion 110 between the main plate structure 10 and the cover plate body 20, the space occupied by the sealing structure 11 as a whole on the side of the main plate structure 10 away from the cover plate body 20 (i.e., the internal space of the battery) can be reduced, thereby improving the energy density and safety of the battery cell including the insulating plate 1.
- the side of the sealing part 110 away from the main plate structure 10 may have a sealing surface 110a, and the sealing surface 110a is configured to abut against the cover plate body 20 to seal the injection hole 200, thereby realizing the sealing function of the sealing part 110 on the injection hole 200.
- the height of the connecting portion 111 protruding from the main plate structure 10 is less than or equal to the height of the sealing surface 110a protruding from the main plate structure 10, so as to avoid interference between the structure of the connecting portion 111 and the cover plate body 20, thereby affecting the abutment tightness between the sealing surface 110a and the cover plate body 20, thereby avoiding affecting the sealing effect of the sealing surface 110a on the injection hole 200.
- the inventors have found through further research that in order to make the sealing surface 110a have a better sealing effect on the injection hole 200, it is necessary to make the effective contact area between the sealing surface 110a and the cover plate body 20 larger. In other words, it is necessary to make the area of the sealing surface 110a larger than the opening area of the injection hole 200 on the cover plate body 20, and larger to a certain extent.
- the injection hole 200 is usually a circular hole, and the radius of the injection hole 200 on the surface of the cover plate body 20 facing the main plate structure 10 is a, and the radius a can usually be 1.5 mm.
- the sealing surface 110a has an outer envelope circle diameter R, and the outer envelope diameter R can satisfy: 4mm ⁇ R ⁇ 8mm, for example, the outer envelope diameter R can be 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm or 8mm, etc.
- the area of the sealing surface 110a may be S1
- the opening area of the injection hole 200 on the surface of the cover plate body 20 facing the main plate structure 10 may be S2
- the ratio of the area S1 to the area S2 may satisfy: 2 ⁇ S1/S2 ⁇ 5.
- S1/S2 may be: 2, 2.5, 3, 3.5, 4, 4.5 or 5, etc., wherein the units of the area S1 and the area S2 are both mm2 .
- the sealing surface 110a with the same outer envelope circle diameter R but different shapes, its area S1 is also different.
- the outer envelope diameter R of the sealing surface 110a can satisfy: 4mm ⁇ R ⁇ 8mm, and the area S1 of the sealing surface 110a and the opening area S2 on the surface of the cover plate body 20 facing the main plate structure 10 can satisfy: 2 ⁇ S1/S2 ⁇ 5.
- the sealing surface 110a may be a circular surface, an equitrilateral surface, an equiquadrilateral surface, an equipentagonal surface, an equihexagonal surface or other equilateral surfaces, and correspondingly, the sealing portion 110 may be a cylindrical, triangular prism, quadrangular prism, pentagonal prism, hexagonal prism or other columnar structure, so that the effective contact area between the sealing surface 110a and the cover plate body 20 is more evenly distributed around the injection hole 200, the sealing effect of the sealing surface 110a on the injection hole 200 is more balanced, and the structure of the sealing portion 110 is simpler and easier to manufacture.
- the sealing surface 110a may have a first central axis M1
- the sealing structure 11 may further include an alignment portion 112, which is protruding from the sealing surface 110a, and the alignment portion 112 is configured to extend into the injection hole 200 so that the first central axis M1 of the sealing surface 110a roughly coincides with the second central axis M2 of the injection hole 200, thereby reducing the offset between the sealing surface 110a and the injection hole 200, making the relative position of the sealing surface 110a and the injection hole 200 closer to the ideal state in the design, and making the effective contact area between the sealing surface 110a and the cover plate body 20 more evenly distributed around the injection hole 200, and the sealing effect of the sealing surface 110a on the injection hole 200 is more balanced.
- the outer periphery of the alignment portion 112 may have a guide surface 112a, and the guide surface 112a is configured to guide the alignment portion 112 to extend into the injection hole 200, so that when there is a certain offset between the alignment portion 112 and the injection hole 200, the alignment portion 112 and the injection hole 200 can be self-aligned through the guide surface 112a, so that the alignment portion 112 extends into the interior of the injection hole 200 and drives the first central axis M1 of the sealing portion 110 to automatically align with the second central axis M2 of the injection hole 200.
- the guide surface 112 a can abut against the wall of the injection hole 200 , so that the alignment portion 112 extends into the injection hole 200 under the reaction force of the wall of the injection hole 200 .
- the alignment portion 112 can be a conical structure protruding from the sealing surface 110a, and the alignment portion 112 takes the first central axis M1 as the axis, and the outer peripheral surface of the conical structure forms a guide surface 112a, so that the alignment portion 112 can realize the function of driving the sealing portion 110 to automatically align, and the structure of the alignment portion 112 is simple.
- the alignment portion 112 may also be a circular ring structure arranged around the first central axis M1, and the outer periphery of the circular ring structure is formed as the guide surface 112a, or there may be multiple alignment portions 112, and multiple alignment portions 112 are arranged at intervals around the first central axis M1, and the outer surfaces of the multiple alignment portions 112 that are away from the first central axis M1 are formed as the guide surface 112a. It can be understood that as long as the alignment portion 112 can automatically align and extend into the injection hole 200 to drive the first central axis M1 of the sealing portion 110 to automatically align with the second central axis M2 of the injection hole 200, the present embodiment does not specifically limit the structure of the alignment portion 112.
- the connecting portion 111 can be connected between the outer periphery of the sealing portion 110 and the main plate structure 10, so that in a direction perpendicular to the sealing surface 110a, the structure of the connecting portion 111 and the sealing portion 110 is more compact, and the sealing structure 11 is more suitable for being arranged between the main plate structure 10 and the cover plate body 20.
- the connecting portion 111 may be an at least partially curved strip-shaped structure, with two opposite ends of the connecting portion 111 respectively connected to the sealing portion 110 and the main plate structure 10, and there may be multiple connecting portions 111, with the multiple connecting portions 111 being arranged at intervals around the sealing portion 110, so that the connecting portion 111 can provide a greater elastic supporting force for the sealing portion 110 through the at least partially curved structure.
- the force application points of the elastic supporting force of the connecting portion 111 on the sealing portion 110 can be increased, thereby improving the balance of the supporting effect of the connecting portion 111 on the sealing portion 110, so as to improve the consistency of the abutment tightness between the sealing surface 110a and the cover plate body 20.
- multiple connecting portions 111 may be equidistantly arranged around the sealing portion 110, so that the supporting effect of the connecting portions 111 on the sealing portion 110 is optimally balanced and the consistency of the abutment tightness between the sealing surface 110a and the cover body 20 is also optimal.
- connection portion 111 may be formed as a strip-shaped structure that is bent and protrudes away from the main plate structure 10, so that the connection portion 111 can provide a greater elastic support force for the sealing portion 110 while making the structure of the connection portion 111 simpler.
- the connecting portion 111 Along the direction perpendicular to the sealing surface 110a, the connecting portion 111 has a height H, and along the direction parallel to the sealing surface 110a, the connecting portion 111 has a length L.
- the ratio H/L of the height H to the length L of the connecting portion 111 should not be too large or too small.
- the ratio H/L of the height H to the length L of the connecting portion 111 may satisfy: 0.2 ⁇ H/L ⁇ 1.5.
- H/L may be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4 or 1.5, etc., wherein the units of the height H and the length L are both mm.
- the connecting portion 111 has a thickness.
- the connecting portion 111 may be a structure of unequal thickness.
- the connecting portion 111 may have at least one reduced thickness portion 111a, so that when the connecting portion 111 undergoes elastic deformation, the elastic deformation is mainly concentrated in the reduced thickness portion 111a, so that the elastic deformation of the connecting portion 111 is more controllable and it is easier to simulate and calculate the force and structural deformation of the connecting portion 111.
- the minimum thickness of the connecting portion 111 can be t1, that is, the minimum thickness of the reduced thickness 111a of the connecting portion 111 can be t1.
- the smaller the structural strength of the reduced thickness 111a the smaller the elastic support force that the connecting portion 111 can provide for the sealing portion 110.
- the function of the reduced thickness 111a to concentrate the elastic deformation of the connecting portion 111 is The smaller it is, the lower the controllability of the elastic deformation of the connecting part 111, but the greater the elastic supporting force that the connecting part 111 can provide for the sealing part 110.
- the thickness t1 cannot be too small or too large.
- the thickness t1 may satisfy: 0.2mm ⁇ t1 ⁇ 1mm.
- the thickness t1 may be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, etc.
- the connecting portion 111 has a width in a direction parallel to the sealing surface 110a.
- the connecting portion 111 may be a structure of unequal width.
- the connecting portion 111 may have at least one reduced width portion 111b, so that the connecting portion 111 is easy to be elastically bent in the width direction at the reduced width portion 111b, so that the sealing portion 110 supported by the connecting portion 111 can be slightly twisted in the circumferential direction.
- the connecting portion 111 can be bent in the width direction at the reduced width portion 111b, so that the sealing portion 110 is slightly twisted, so that the sealing surface 110a is automatically and tightly abutted against the cover plate body 20, and the sealing surface 110a has a better sealing effect on the injection hole 200.
- the minimum width of the connecting portion 111 can be t2, that is, the minimum width of the reduced width 111b of the connecting portion 111 can be t2.
- the width t2 cannot be too small or too large.
- the width t2 may satisfy: 0.2mm ⁇ t2 ⁇ 1mm.
- the width t2 may be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, etc.
- the connecting portion 111 may be a structure of unequal thickness and unequal width.
- the connecting portion 111 may have at least one reduced thickness portion 111a and at least one reduced width portion 111b, so that the elastic deformation of the connecting portion 111 is more controllable and the connecting portion 111 is easy to bend elastically along the width direction at the reduced width portion 111b, so that the sealing surface 110a can be more easily automatically and tightly abutted against the cover plate body 20, and the sealing surface 110a has a better sealing effect on the injection hole 200.
- the minimum thickness of the connecting portion 111 may be t1, that is, the minimum thickness of the reduced thickness portion 111a of the connecting portion 111 may be t1, and the thickness t1 may satisfy: 0.2mm ⁇ t1 ⁇ 1mm, and the minimum width of the connecting portion 111 may be t2, that is, the minimum width of the reduced width portion 111b of the connecting portion 111 may be t2, and the width t2 may satisfy: 0.2mm ⁇ t2 ⁇ 1mm.
- the thickness t1 and the thickness t2 please refer to the description in the aforementioned technical solution and will not be repeated here.
- the sealing structure 11 can be formed as one piece with the main plate structure 10.
- the sealing structure 11 and the main plate structure 10 can be integrally formed, or the sealing structure 11 and the main plate structure 10 can be fixedly connected to each other by adhesive connection, welding or other fixed connection methods to form a whole, so that the overall structure of the insulating plate 1 is more stable.
- the main plate structure 10 Since the main plate structure 10 needs to have insulating properties, the main plate structure 10 is usually made of plastic with good insulating properties. Since plastic usually has a certain elasticity, based on this, in some possible implementation methods, the sealing structure 11 and the main plate structure 10 can be made of the same plastic material, and the insulating plate 1 as a whole can be integrally formed by injection molding. In other words, the sealing structure 11 as a whole can be integrally formed with the main plate structure 10 by injection molding, thereby simplifying the manufacturing process of the insulating plate 1 and achieving good connection stability between the sealing structure 11 and the main plate structure 10.
- reinforcing ribs 100 may be protrudingly provided on the surface of the main plate structure 10 to enhance the structural strength of the main plate structure 10 .
- the portion of the main plate structure 10 protruding with the reinforcing ribs 100 has a greater overall structure thickness than the portion not protruding with the reinforcing ribs 100. Therefore, during the injection molding process, the injection molding material at the portion of the main plate structure 10 protruding with the reinforcing ribs 100 cools down more slowly, and cooling and solidification takes more time.
- the connection portion 111 can be connected between the sealing portion 110 and the reinforcing ribs 100, so that during the injection molding process, the injection molding material can enter the connection portion 111 from the reinforcing ribs 100 to form the structure of the connection portion 111 and the sealing portion 110.
- the temperature of the injection molding material when entering the connection portion 111 is relatively high, which can reduce the defects of insufficient glue flow and material shortage in the sealing structure 11 due to premature cooling and solidification of the injection molding material, thereby improving the injection molding yield of the sealing structure 11.
- the main plate structure 10 may be provided with a first through hole 101, and the first through hole 101 is arranged to correspond to the injection hole 200.
- the sealing structure 11 may be mounted on the first through hole 101, so as to facilitate the injection head to inject liquid from the injection hole 200 into the interior of the battery (i.e., the side of the main plate structure 10 away from the cover plate body 20), and the electrolyte quickly enters the interior of the battery through the first through hole 101.
- the main plate structure 10 may be provided with a plurality of second through holes 102 in an array, so that when the injection head injects liquid from the injection hole 200 into the interior of the battery (i.e., the side of the main plate structure 10 away from the cover plate body 20), the electrolyte seeps into the interior of the battery through the second through holes 102.
- the main plate structure 10 may be provided with the aforementioned first through hole 101 and the second through hole 102 at the same time, so that the electrolyte can quickly enter the interior of the battery through the first through hole 101, and the electrolyte that has not fallen into the first through hole 101 can be allowed to seep into the interior of the battery through the second through hole 102, thereby making the electrolyte injection efficiency higher.
- the present application provides a cover plate assembly 2 for a battery
- the cover plate assembly 2 includes a cover plate body 20 and an insulating plate 1 provided by the aforementioned technical solution.
- the cover plate body 20 is provided with a liquid injection hole 200
- the main plate structure 10 is arranged on one side of the cover plate body 20
- the sealing portion 110 is arranged on the side of the main plate structure 10 close to the cover plate body 20, and the sealing portion 110 can seal the liquid injection hole 200.
- the sealing portion 110 Since the sealing portion 110 is located between the main plate structure 10 and the cover plate body 20, the sealing structure 11 as a whole occupies a small space on the side of the main plate structure 10 away from the cover plate body 20 (i.e., the internal space of the battery), so the battery cell energy density and safety of the battery including the cover plate assembly 2 can be improved.
- the spacing distance is smaller than the protruding height of the sealing surface 110a from the main plate structure 10.
- the smaller the operating space between the cover body 20 and the main plate structure 10 for the injection head to enter for injection and exhaust the larger the spacing distance between the cover body 20 and the main plate structure 10, the smaller the pressing force of the sealing surface 110a against and pressed against the surface of the cover body 20, and the more difficult it is to maintain a stable sealing effect for the injection hole 200.
- the specific spacing distance between the cover body 20 and the main plate structure 10 can be selected according to usage requirements, and this embodiment does not make any specific limitations.
- the present application provides a battery 3, which includes a shell 30, a battery cell 31 and a cover assembly 2 provided by the aforementioned technical solution.
- One side of the shell 30 has an opening 300
- the battery cell 31 is arranged inside the shell 30, the cover assembly 2 covers the opening 300, and the cover body 20 is located on the side of the insulating plate 1 away from the battery cell 31. Since the sealing part 110 (see Figure 3) occupies a small amount of the internal space of the battery 3, the battery cell 31 of the battery 3 has a higher energy density and the battery 3 is safer to use.
- the present application provides a liquid injection head 4, which is used to inject liquid into the battery 3 provided by the above technical solution, and the liquid injection head 4 includes a main body 40 and an extension 41.
- a first channel 400 is provided in the main body 40, and the main body 40 is configured to be sealed and connected to the cover body 20 to seal the liquid injection hole 200.
- the extension 41 is convexly provided on the main body 40, and the extension 41 is configured to penetrate the liquid injection hole 200.
- the top 410 of the extension 41 is configured to abut against the sealing part 110 and enter the interior of the housing 30, and a channel opening 411 is provided on the outer periphery of the top 410, and the channel opening 411 is connected to the first channel 400.
- the top end 410 of the extension portion 41 can be used to push the sealing portion 110 to release the seal of the injection hole 200, and the top end 410 can enter the position between the cover body 20 and the main plate structure 10, so that the channel opening 411 on the outer periphery of the top end 410 is connected to the gap between the cover body 20 and the main plate structure 10, so as to evacuate and inject liquid into the battery 3 through the channel opening 411, and in this process, the sealing portion 110 will not block the channel opening 411 and hinder the evacuation and injection of liquid by the injection head 4.
- the extending portion 41 can also abut against the alignment portion 112 so that the alignment portion 112 drives the sealing portion 110 to move to release the sealing of the injection hole 200 .
- the protruding height of the extension portion 41 protruding from the main body portion 40 is c.
- the protruding height c In order to allow the channel opening 411 arranged on the periphery of the top end 410 to enter the position between the cover body 20 and the main plate structure 10, so as to be connected to the gap between the cover body 20 and the main plate structure 10, the protruding height c needs to be larger. However, when the protruding height c is too large, it is easy to cause the top end 410 of the extension portion 41 to push the sealing portion 110 against the battery cell 31 during the injection process, causing damage to the battery cell 31. Based on this, in some possible implementation methods, the height c can satisfy: 0.5mm ⁇ c ⁇ 1mm.
- the height c can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, etc.
- the top 410 may have a top surface 410a away from the main body 40, the top surface 410a is configured to abut against the sealing portion 110 and enter the interior of the battery 3, the top surface 410a may be provided with a second channel 412, the second channel 412 is connected to the first channel 400, the channel opening 411 is opened at the periphery of the top 410 and the top surface 410a, and the channel opening 411 is connected to the second channel 412, so that, in the manufacturing process of the injection head 4, the extension portion 41 can be processed on one side of the top surface 410a to form a channel opening 411 connected to the second channel 412, the forming process of the channel opening 411 is simpler, especially when there are multiple channel openings 411, there is no need to change the processing direction, and multiple channel openings 411 with different opening directions can be manufactured, which can simplify the processing steps.
- the periphery of the top 410 may have an outer peripheral surface 410b connected to the top surface 410a, and the channel opening 411 is provided on the outer peripheral surface 410b.
- the outer peripheral surface 410b may be perpendicular or inclined to the top surface 410a, or the outer peripheral surface 410b may also be a curved surface or other special-shaped surfaces.
- injection heads 4 there are usually two types of injection heads 4 according to the working mode of the injection head 4, one type is an injection head 4 that realizes breathing injection by alternately evacuating and injecting liquid into the battery 3, and the other type is an injection head 4 that realizes injection by simultaneously evacuating and injecting liquid into the battery 3.
- the specific structure of the injection head 4 provided in this embodiment will be described with reference to the accompanying drawings when the injection head 4 provided in this embodiment is respectively one of the two types of injection heads 4.
- the injection head 4 is configured to perform breathing-like injection into the battery 3.
- the channel opening 411 of the injection head 4 is used as a suction port
- the first channel 400 is used as a suction channel.
- the channel opening 411 of the injection head 4 is used as a liquid injection port
- the first channel 400 is used as a liquid injection channel.
- the injection head 4 realizes injection by simultaneously performing air extraction and liquid injection on the inside of the battery 3.
- There may be a plurality of first channels 400 which are arranged at intervals.
- at least one first channel 400 is an injection channel 400a
- the remaining at least one first channel 400 is an air extraction channel 400b.
- at least one channel opening 411 is a liquid injection channel 400a.
- the liquid injection opening 411a is connected to the liquid injection channel 400a, and the exhaust opening 411b is connected to the exhaust channel 400b, so that the liquid injection head 4 can exhaust the interior of the battery 3 through the exhaust channel 400b and the exhaust opening 411b, and can also inject liquid into the battery 3 through the liquid injection channel 400a and the liquid injection opening 411a, so as to maintain the air pressure inside the battery 3 within a relatively stable range during the liquid injection process.
- multiple injection openings 411a may be connected to the same injection channel 400a to reduce the flow rate of the electrolyte injected from the multiple injection openings 411a during the injection process, thereby reducing the impact of the electrolyte impacting the interior of the battery 3 on the interior of the battery 3.
- multiple exhaust openings 411b may be connected to the same exhaust channel 400b to reduce the flow rate of air at the multiple exhaust openings 411b during the exhaust process, thereby reducing the impact of air flow on the interior of the battery 3.
- the main body 40 may also be provided with a sealing ring 401, which is located on one side of the main body 40 where the extension portion 41 is convexly provided, and surrounds the outer periphery of the extension portion 41.
- the main body 40 is sealed against the cover body 20 through the sealing ring 401, thereby achieving a better sealing effect on the injection hole 200, and is more able to avoid air leakage between the main body 40 and the cover body 20 during the vacuum process, and liquid leakage between the main body 40 and the cover body 20 during the liquid injection process.
- the surface of the main body 40 may also be provided with a setting groove 402 around the extension portion 41, and the sealing ring 401 is partially located in the setting groove 402 and connected to the groove wall of the setting groove 402, so that the effective connection area between the sealing ring 401 and the main body 40 is larger, and the connection stability between the sealing ring 401 and the main body 40 is better.
- the present application provides a liquid injection device 5, which includes an air suction device 50, an injection device 51, and the injection head 4 provided by the aforementioned technical solution.
- the air suction device 50 and the injection device 51 are respectively connected to the injection head 4, and are respectively connected to the first channel 400 (see FIG. 11 ).
- liquid can be injected into the battery 3 provided by the aforementioned technical solution, and the sealing structure 11 (see FIG. 12 ) is less obstructed during the injection process.
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Abstract
一种绝缘板(1)、盖板组件(2)、电池(3)、注液头(4)及注液设备(5),通过将密封结构(11)设置于本体板结构(10),可以通过确定绝缘板(1)整体的装配姿态,来确定密封结构(11)的装配姿态,密封结构(11)整体的厚度可以较小,密封部(110)能够设于本体板结构(10)的靠近盖板主体(20)的一侧,从而减小密封结构(11)整体对于电池(3)的内部空间的占用,提升包括电芯能量密度以及安全性。
Description
本申请要求在2023年06月08日提交中国专利局、申请号为202310676863.X和202321455918.6的中国专利申请的优先权,以上申请的全部内容通过引用结合在本申请中。
本申请涉及电池技术领域,尤其涉及一种绝缘板、盖板组件、电池、注液头及注液设备。
为了供电解液注入,动力电池的盖板主体通常设有注液孔,而在注液完成后,为了防止漏液,相关技术中,往往通过在注液孔中设置密封胶粒来对注液孔进行密封,且为了使密封胶粒钉入注液孔时的姿态具有较高的可控性,以保证电池的制造良率,行业中通常要求密封胶粒的厚度不小于3.5mm,换言之,密封胶粒的厚度往往大于盖板组件主体的厚度。
然而,这种设置方式会导致密封胶粒钉入注液孔后,密封胶粒的一端进入电池内部,挤占电池内部的电芯设置空间,使得电芯能量密度降低,以及电芯受压,电池安全性降低。
本申请提供了一种绝缘板。绝缘板用于电池的盖板组件,盖板组件包括盖板主体和绝缘板,盖板主体开设有注液孔,绝缘板包括:
本体板结构,本体板结构设于盖板主体的一侧;以及,
密封结构,密封结构包括密封部以及连接部,密封部设于本体板结构靠近盖板主体的一侧,密封部设置为密封注液孔,连接部连接于密封部与本体板结构之间,连接部具有弹性。
本申请还提供一种盖板组件。盖板组件用于电池,盖板组件包括:
盖板主体,盖板主体开设有注液孔;以及,
绝缘板,包括本体板结构和密封结构,本体板结构设于盖板主体的一侧;密封结构包括密封部以及连接部,密封部设于本体板结构靠近盖板主体的一侧,密封部设置为密封注液孔,连接部连接于密封部与本体板结构之间,连接部具有弹性,本体板结构设于盖板主体的一侧,密封部设于本体板结构的靠近盖板主体的一侧,且密封部能够密封注液孔。
本申请还提供一种电池。电池包括壳体、电芯以及盖板组件,盖板组件包括盖板主体和绝缘板,盖板主体开设有注液孔;绝缘板包括本体板结构和密封结构,本体板结构设于盖板主体的一侧;密封结构包括密封部以及连接部,密封部设于本体板结构靠近盖板主体的一侧,密封部设置为密封注液孔,连接部连接于密封部与本体板结构之间,连接部具有弹性,本体板结构设于盖板主体的一侧,密封部设于本体板结构的靠近盖板主体的一侧,且密封部能够密封注液孔;
其中,壳体的一侧具有开口,电芯设置于壳体内部,盖板组件封盖开口,且盖板主体位于绝缘板的远离电芯的一侧。
本申请还提供一种注液头。注液头设置为向电池的内部注液,电池包括壳体、电芯以及盖板组件,盖板组件包括盖板主体和绝缘板,盖板主体开设有注液孔;绝缘板包括本体板结构和密封结构,本体板结构设于盖板主体的一侧;密封结构包括密封部以及连接部,密封部设于本体板结构靠近盖板主体的一侧,密封部设置为密封注液孔,连接部连接于密封部与本体板结构之间,连接部具有弹性,本体板结构设于盖板主体的一侧,密封部设于本体板结构的靠近盖板主体的一侧,且密封部能够密封注液孔;其中,壳体的一侧具有开口,电芯设置于壳体内部,盖板组件封盖开口,且盖板主体位于绝缘板的远离电芯的一侧;注液头包括:
主体部,主体部内设有第一通道,主体部设置为密封连接于盖板主体,以密封注液孔;以及,
延伸部,延伸部凸设于主体部,且延伸部设置为穿设于注液孔,延伸部的顶端设置为抵顶于密封部并进入壳体的内部,顶端的外周开设有通道开口,通道开口连通于第一通道。
本申请还提供一种注液设备。注液设备包括抽气装置、注液装置以及注液头,注液头设置为向电池的内部注液,电池包括壳体、电芯以及盖板组件,盖板组件包括盖板主体和绝缘板,盖板主体开设有注液孔;绝缘板包括本体板结构和密封结构,本体板结构设于盖板主体的一侧;密封结构包括密封部以及连接部,密封部设于本体板结构靠近盖板主体的一侧,密封部设置为密封注液孔,连接部连接于密封部与本体板结构之间,连接部具有弹性,本体板结构设于盖板主体的一侧,密封部设于本体板结构的靠近盖板主体的一侧,且密封部能够密封注液孔;壳体的一侧具有开口,电芯设置于壳体内部,盖板组件封盖开口,且盖板主体位于绝缘板的远离电芯的一侧;注液头包括:
主体部,主体部内设有第一通道,主体部设置为密封连接于盖板主体,以密封注液孔;以及,
延伸部,延伸部凸设于主体部,且延伸部设置为穿设于注液孔,延伸部的顶端设置为抵顶于密封部并进入壳体的内部,顶端的外周开设有通道开口,通道开口连通于第一通道;
其中,抽气装置以及注液装置分别连接于注液头,且分别连通于第一通道。
本申请提供的绝缘板、盖板组件、电池通过使密封结构包括密封部以及连接于密封部和本体板结构之间的连接部,使得密封部能够在具有弹性的连接部的支撑下密封注液孔,而通过将密封结构设置于本体板结构,在装配过程中,可以通过确定绝缘板整体的装配姿态,来确定密封结构的装配姿态,从而保证密封结构的装配良率,因此密封结构整体的厚度可以较小,以使密封部能够设于本体板结构的靠近盖板主体的一侧。而通过将密封部设于本体板结构的靠近盖板主体的一侧,换言之,通过将密封部设于本体板结构与盖板主体之间,能够减小密封结构整体对于本体板结构的远离盖板主体一侧的空间(即,电池的内部空间)的占用,从而能够提升包括该绝缘板的电池的电芯能量密度以及安全性。
本申请提供的注液头及注液设备通过设置能够穿设于绝缘板的密封部的注液孔的延伸部,可以利用延伸部的顶端将密封部抵顶至解除对注液孔的密封,并且使顶端进入盖板主体与本体板结构之间的位置,从而使顶端外周的通道开口连通于盖板主体与本体板结构之间的间隙处,以通过顶端外周的通道开口对电池内部进行抽气、注液,且在此过程中,密封部不会堵塞通道开口而阻碍注液头的抽气、注液。
图1为本申请提供的绝缘板的立体结构示意图;
图2为图1中P处的放大图;
图3为本申请提供的绝缘板与盖板主体的装配结构局部示意图;
图4为本申请提供的绝缘板与盖板主体的分解结构局部示意图;
图5为本申请提供的盖板组件的立体结构示意图;
图6为本申请提供的盖板组件的结构分解示意图;
图7为本申请提供的电池的立体结构示意图;
图8为本申请提供的电池的结构分解示意图;
图9为本申请提供的注液头的立体结构示意图;
图10为本申请提供的注液头的仰视示意图;
图11为图10中A-A向剖视图;
图12为本申请提供的注液头与盖板主体与绝缘板(在注液头设置为向电池内部进行注液时)的结构示意图;
图13为本申请提供的注液头(注液头通过同时对电池内部进行抽气与注液来实现注液)的结构剖视示意图;
图14为本申请提供的注液设备的结构示意框图。
附图标记说明:
1、绝缘板;10、本体板结构;100、加强筋;101、第一通孔;102、第二通孔;11、密封结构;110、密封部;110a、密封面;111、连接部;111a、减厚处;111b、减宽处;112、对位部;112a、引导面;
2、盖板组件;20、盖板主体;200、注液孔;
3、电池;30、壳体;300、开口;31、电芯;
4、注液头;40、主体部;400、第一通道;400a、注液通道;400b、抽气通道;401、密封圈;402、设置槽;41、延伸部;410、顶端;410a、顶面;410b、外周面;411、通道开口;411a、注液开口;411b、抽气开口;412、第二通道;
5、注液设备;50、抽气装置;51、注液装置。
在本申请的描述中,除非另有明确的规定和限定,术语“相连”、“连接”、“固定”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可视具体情况理解上述术语在本申请中的具体含义。
在本申请中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,第一特征水平高度小于第二特征。
在本实施例的描述中,术语“上”、“下”、“左”、“右”、“前”、“后”等方位或位置关系为基于附图所示的方位或位置关系,是为了便于描述和简化操作,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。此外,术语“第一”、“第二”用于在描述上加以区分,并没有特殊的含义。
如图1、图2以及图3所示,本申请提供一种绝缘板1,用于电池的盖板组件,盖板组件包括盖板主体20和绝缘板1,盖板主体20开设有注液孔200,绝缘板1包括本体板结构10以及密封结构11。本体板结构10设于盖板主体20的一侧,密封结构11包括密封部110以及连接部111,密封部110设于本体板结构10靠近盖板主体20的一侧,密封部110设置为密封注液孔200,连接部111连接于密封部110与本体板结构10之间,连接部111具有弹性。
通过使密封结构11包括密封部110以及连接于密封部110和本体板结构10之间的连接部111,使得密封部110能够在具有弹性的连接部111的支撑下密封注液孔200,即使密封部110因受到额外的外力作用而移动至解除对注液孔200的密封,当额外的外力消失后,密封部110能够在连接部111的弹性力的作用下自动复位至密封于注液孔200,换言之,密封结构11能够在盖板主体20的朝向绝缘板1的一侧实现自动密封注液孔200。
而通过将密封结构11设置于本体板结构10,在装配过程中,可以通过确定绝缘板1整体的装配姿态,来确定密封结构11的装配姿态,例如,可通过确定绝缘板1的朝向盖板主体20的一侧的朝向正确,以确定设置在本体板结构10的密封结构11处于正确的装配姿态,由于相较于密封结构11而言,绝缘板1整体的体积较大,因此易于确认绝缘板1整体的装配姿态,并且易于使绝缘板1整体保持在该正确的姿态下进行装配,从而易于保证密封结构11的装配良率,因此密封结构11整体的厚度可以较小,以使密封部110能够设于本体板结构10的靠近盖板主体20的一侧。而通过将密封部110设于本体板结构10的靠近盖板主体20的一侧,换言之,通过将密封部110设于本体板结构10与盖板主体20之间,能够减小密封结构11整体对于本体板结构10的远离盖板主体20一侧的空间(即,电池的内部空间)的占用,从而能够提升包括该绝缘板1的电池的电芯能量密度以及安全性。
如图2、图3与图4所示,在一些可能实现的方式中,密封部110的远离本体板结构10的一侧可具有密封面110a,密封面110a设置为抵接于盖板主体20,以密封注液孔200,从而实现密封部110对注液孔200的密封功能。
在一些可能实现的方式中,连接部111凸出于本体板结构10的高度小于或等于密封面110a凸出于本体板结构10的高度,以避免连接部111的结构与盖板主体20发生干涉,影响密封面110a与盖板主体20的抵接紧密性,从而避免影响密封面110a对注液孔200的密封效果。
发明人经进一步的研究发现,为了使密封面110a对注液孔200的密封效果较好,需要使密封面110a与盖板主体20之间的有效抵接面积较大,换言之,需要使密封面110a的面积比注液孔200在盖板主体20上的开设面积更大,且大到一定的程度。此外,密封面110a的面积越大,虽然密封面110a对注液孔200的密封效果越好,但是也会导致密封部110的体积越大,一方面会影响绝缘板1整体的结构紧凑性,另一方面会使得连接部111需要向密封部110提供更大的支撑,导致对连接部111的弹性支撑性能要求更高。因此,密封部110的面积需要比注液孔200在盖板主体20的朝向本体板结构10一侧表面的开设面积大一定的程度,但密封面110a的面积不可过大。
相关技术中,注液孔200通常为圆孔,且注液孔200在盖板主体20的朝向本体板结构10一侧表面的开设半径为a,该半径a通常可为1.5mm。基于此,在一些可能实现的方式中,密封面110a具有外包络圆直径R,该外包络直径R可满足:4mm≤R≤8mm,例如,外包络直径R可为4mm、4.5mm、5mm、5.5mm、6mm、6.5mm、7mm、7.5mm或8mm等。
另一些可能实现的方式中,密封面110a的面积可为S1,注液孔200在盖板主体20的朝向本体板结构10一侧表面的开孔面积可为S2,面积S1与面积S2之比可满足:2≤S1/S2≤5,示例性的,S1/S2可为:2、2.5、3、3.5、4、4.5或5等,其中,面积S1与面积S2的单位均为mm
2。
如前述中,注液孔200的半径为a,因此,面积S2=πa
2,从而2≤S1/S2≤5相当于2≤S1/(πa
2)≤5,其中,半径a的单位为mm。
可以理解的,对于具有相同外包络圆直径R但形状不相同的密封面110a,其面积S1也不相同,为了使密封面110a的密封性能较理想的同时,使密封部110的结构体积也较理想,在一些可能实现的方式中,可使密封面110a的外包络直径R满足:4mm≤R≤8mm的同时,使密封面110a的面积S1与在盖板主体20的朝向本体板结构10一侧表面的开孔面积S2满足:2≤S1/S2≤5。
在一些可能实现的方式中,密封面110a可为圆形面、等三边形面、等四边形面、等五边形面、等六边形面或其他等边形的面,对应的,密封部110可为圆柱形、三棱柱形、四棱柱形、五棱柱形、六棱柱形或其他的柱形结构,从而密封面110a与盖板主体20的有效抵接面积环绕注液孔200分部得更均衡,密封面110a对于注液孔200的密封作用更加平衡,并且密封部110的结构较简单,易于制造。
在一些可能实现的方式中,密封面110a可具有第一中轴线M1,密封结构11还可包括对位部112,对位部112凸设于密封面110a,对位部112设置为伸入注液孔200内部,以使密封面110a的第一中轴线M1大致重合于注液孔200的第二中轴线M2,从而能够减小密封面110a与注液孔200之间的发生的偏移,使密封面110a与注液孔200的相对位置更加接近于设计中的理想状态,使得密封面110a与盖板主体20的有效抵接面积环绕注液孔200分布得更均衡,密封面110a对于注液孔200的密封作用更加平衡。
在一些可能实现的方式中,对位部112的外周可具有引导面112a,引导面112a设置为引导对位部112伸入注液孔200,从而在对位部112与注液孔200之间具有一定的偏移的情况下,能够通过引导面112a使得对位部112与注液孔200进行自对准,从而使对位部112伸入注液孔200内部,并带动密封部110的第一中轴线M1自动对位于注液孔200的第二中轴线M2。
具体地,在对位部112与注液孔200之间具有一定的偏移的情况下,引导面112a能够抵接于注液孔200的孔壁,以使对位部112在注液孔200的孔壁的反作用力的作用下伸入注液孔200。
示例性地,对位部112可为凸设于密封面110a的圆台结构,且对位部112以第一中轴线M1为轴心,圆台结构的外周面形成为引导面112a,从而对位部112能够实现带动密封部110自动对位的功能,且对位部112的结构简单。
在其他示例中,对位部112还可为环绕第一中轴线M1设置的圆环结构,圆环结构的外周形成为引导面112a,或者,对位部112可为多个,多个对位部112环绕第一中轴线M1间隔设置,多个对位部112分别的背离第一中轴线M1的外表面形成为引导面112a。可以理解的,只要对位部112能够自动对准并伸入注液孔200,以带动密封部110的第一中轴线M1自动对位于注液孔200的第二中轴线M2即可,本实施例对对位部112的结构不作具体限定。
在一些可能实现的方式中,连接部111可连接于密封部110的外周与本体板结构10之间,从而沿垂直于密封面110a的方向上,连接部111与密封部110的结构更加紧凑,密封结构11更适于设于本体板结构10与盖板主体20之间。
在一些可能实现的方式中,连接部111可为至少部分弯曲的条状结构,连接部111的两相对端分别连接于密封部110以及本体板结构10,且连接部111可为多个,多个连接部111环绕密封部110间隔设置,从而通过该至少部分弯曲的结构,使得连接部111能够为密封部110提供更大的弹性支撑力,同时,通过增多连接部111的数量,能够增对连接部111对密封部110的弹性支撑力的施力点,从而提升连接部111对密封部110的支撑作用的平衡性,以提升密封面110a的各处与盖板主体20的抵接紧密性的一致性。
在一些可能实现的方式中,多个连接部111可环绕密封部110等距设置,从而连接部111对密封部110的支撑作用的平衡性最优,且密封面110a的各处与盖板主体20的抵接紧密性的一致性也最优。
在一些可能实现的方式中,连接部111可形成为背向本体板结构10弯曲凸出的条状结构,以使连接部111能够为密封部110提供更大的弹性支撑力的同时,使连接部111的结构更加简单。
沿垂直于密封面110a的方向上,连接部111具有高度H,沿平行于密封面110a的方向上,连接部111具有长度L,发明人经进一步的研究发现,连接部111的高度H与长度L之比H/L越小,连接部111能够为密封部110提供的弹性支撑力越小,而H/L越大,连接部111的结构在发生弹性形变时产生的应力越大,连接部111越易于发生断裂,因此,连接部111的高度H与长度L之比H/L不可过大或过小。基于此,在一些可能实现的方式中,连接部111的高度H与长度L之比H/L可满足:0.2≤H/L≤1.5,例如,H/L可为0.2、0.3、0.4、0.5、0.6、0.7、0.8、0.9、1、1.1、1.2、1.3、1.4或1.5等,其中,高度H与长度L的单位均为mm。
沿垂直于密封面110a的方向上,连接部111具有厚度,在一些可能实现的方式中,连接部111可为不等厚的结构,换言之,连接部111可具有至少一处减厚处111a,从而使连接部111发生弹性形变时,该弹性形变主要集中发生于该减厚处111a,以使连接部111的弹性形变的可控性更高,更便于对连接部111的受力、结构形变进行模拟计算。
连接部111的厚度最小可为t1,即,连接部111的减厚处111a的最小厚度可为t1,该厚度t1越小,减厚处111a能够发生的弹性形变越大,但减厚处111a的结构强度越小,连接部111能够为密封部110提供的弹性支撑力越小,该厚度t1越大,减厚处111a能够发生的弹性形变越小,减厚处111a的使连接部111的弹性形变集中的功能越小,连接部111的弹性形变的可控性越低,但连接部111能够为密封部110提供的弹性支撑力越大,因此,厚度t1不可过小或过大,基于此,在一些可能实现的方式中,该厚度t1可满足:0.2mm≤t1≤1mm,例如,厚度t1可为0.2mm、0.3mm、0.4mm、0.5mm、0.6mm、0.7mm、0.8mm、0.9mm或1mm等。
沿平行于密封面110a的方向上,连接部111具有宽度,另一些可能实现的方式中,连接部111可为不等宽的结构,换言之,连接部111可具有至少一处减宽处111b,从而使连接部111在减宽处111b易于发生沿宽度方向上的弹性弯折,以使连接部111支撑的密封部110能够发生沿周向的小幅度扭动,从而,在由于制造误差导致密封部110需要发生小幅度扭动,才能够使密封面110a紧密抵接于盖板主体20的情况下,连接部111能够在减宽处111b发生沿宽度方向上的弯折,以使密封部110发生小幅度扭动,从而使密封面110a自动紧密抵接于盖板主体20,密封面110a对注液孔200的密封效果较好。
连接部111的宽度最小可为t2,即,连接部111的减宽处111b的最小宽度可为t2,该宽度t2越小,减宽处111b能够发生的弹性弯折越大,但减宽处111b的结构强度越小,连接部111能够为密封部110提供的弹性支撑力越小,该宽度t2越大,减宽处111b能够发生的弹性弯折越小,密封部110能够发生的扭动幅度越小,密封部110自动调整姿态以使密封面110a紧密抵接于盖板主体20的功能越受限,但连接部111能够为密封部110提供的弹性支撑力越大,因此,宽度t2不可过小或过大,基于此,在一些可能实现的方式中,该宽度t2可满足:0.2mm≤t2≤1mm,例如,宽度t2可为0.2mm、0.3mm、0.4mm、0.5mm、0.6mm、0.7mm、0.8mm、0.9mm或1mm等。
在一些可能实现的方式中,连接部111可为不等厚且不等宽的结构,换言之,连接部111可具有至少一处减厚处111a以及至少一处减宽处111b,以使连接部111的弹性形变的可控性更高的同时,使连接部111在减宽处111b易于发生沿宽度方向上的弹性弯折,以使密封面110a更易于实现自动紧密抵接于盖板主体20,密封面110a对注液孔200的密封效果更好。
在一些可能实现的方式中,连接部111的厚度最小可为t1,即,连接部111的减厚处111a的最小厚度可为t1,厚度t1可满足:0.2mm≤t1≤1mm,且连接部111的宽度最小可为t2,即,连接部111的减宽处111b的最小宽度可为t2,宽度t2可满足:0.2mm≤t2≤1mm,对于厚度t1以及厚度t2的取值所获得的效果,可参见前述技术方案中所述,在此不再赘述。
在一些可能实现的方式中,密封结构11可与本体板结构10形成为一体,例如,密封结构11与本体板结构10可一体成型,或者,密封结构11与本体板结构10可通过胶粘连接、焊接或其他固定连接方式相固定连接以形成为一体,以使绝缘板1的整体结构更加稳定。
由于本体板结构10需要具有绝缘性,因此,本体板结构10通常为绝缘性良好的塑胶,而由于塑胶通常具有一定的弹性,基于此,在一些可能实现的方式中,密封结构11与本体板结构10可为相同的塑胶材质,且绝缘板1整体可通过注塑一体成型,换言之,密封结构11整体与本体板结构10可通过注塑成型并形成为一体,从而使绝缘板1的制造工艺简单,且密封结构11与本体板结构10的连接稳定性好。
请再次参见图1、图2与图3,在一些可能实现的方式中,本体板结构10的表面可凸设有加强筋100,以加强本体板结构10的结构强度。
可以理解的,本体板结构10的凸设有加强筋100的部分相较于不凸设有加强筋100的部分而言,整体结构的厚度更大,因此,在注塑成型的过程中,本体板结构10的凸设有加强筋100的部分处的注塑材料降温更缓慢,冷却固化更耗时。基于此,在一些可能实现的方式中,连接部111可连接于密封部110与加强筋100之间,从而在注塑成型的过程中,注塑材料能够从加强筋100处进入连接部111处以形成连接部111以及密封部110的结构,进入连接部111处时的注塑材料的温度较高,能够减少因注塑材料提前冷却固化,导致走胶不足,密封结构11出现缺料的缺陷的情况,提升密封结构11的注塑成型的良率。
在一些可能实现的方式中,本体板结构10可设有第一通孔101,第一通孔101设置为对应于注液孔200,密封结构11可架设于第一通孔101,从而便于注液头从注液孔200向电池内部(即,本体板结构10的背离盖板主体20一侧)注液时,电解液通过第一通孔101快速地进入电池内部。
在一些可能实现的方式中,本体板结构10可阵列设有多个第二通孔102,从而便于注液头从注液孔200向电池内部(即,本体板结构10的背离盖板主体20一侧)注液时,电解液通过第二通孔102渗液至电池内部。
在一些可能实现的方式中,本体板结构10可同时设有前述中的第一通孔101以及第二通孔102,以通过第一通孔101供电解液快速地进入电池内部,通过第二通孔102供没有落入第一通孔101的电解液渗液至电池内部,从而使电解液的注液效率更高。
如图3、图5与图6所示,本申请提供一种盖板组件2,用于电池,盖板组件2包括盖板主体20以及前述技术方案所提供的绝缘板1。盖板主体20开设有注液孔200,本体板结构10设于盖板主体20的一侧,密封部110设于本体板结构10的靠近盖板主体20的一侧,且密封部110能够密封注液孔200,由于密封部110位于本体板结构10与盖板主体20之间,密封结构11整体对于本体板结构10的远离盖板主体20一侧的空间(即,电池的内部空间)的占用小,因此能够提升包括该盖板组件2的电池的电芯能量密度以及安全性。
在一些可能实现的方式中,盖板主体20与本体板结构10之间具有间隔距离,该间隔距离小于密封面110a凸出于本体板结构10的凸出高度,从而,本体板结构10设于盖板主体20的一侧时,能够使密封结构11整体被压紧于本体板结构10与盖板主体20之间,即,能够使密封面110a紧密抵接于盖板主体20的表面,同时连接部111被挤压产生一定的弹性形变,以持续向密封部110施加弹性力,使得密封面110a较稳定地压紧于盖板主体20的表面,从而密封面110a对注液孔200的密封效果较稳定。
可以理解的,盖板主体20与本体板结构10之间的间隔距离越小,密封面110a抵接并压紧于盖板主体20的表面的压紧力越大,对注液孔200的密封效果越稳定,但是,盖板主体20与本体板结构10之间的用于供注液头进入以进行注液、抽气的操作空间越小,盖板主体20与本体板结构10之间的间隔距离越大,密封面110a抵接压紧于盖板主体20的表面的压紧力越小,对注液孔200的密封效果越难以保持稳定,但是,盖板主体20与本体板结构10之间的用于供注液头进入以进行注液、抽气的操作空间越大,盖板主体20与本体板结构10之间的具体间隔距离,可根据使用需求进行选择,本实施例不作具体限定。
如图7与图8所示,本申请提供一种电池3,电池3包括壳体30、电芯31以及前述技术方案所提供的盖板组件2,壳体30的一侧具有开口300,电芯31设置于壳体30内部,盖板组件2封盖开口300,且盖板主体20位于绝缘板1的远离电芯31的一侧,由于密封部110(请参见图3所示)对电池3的内部空间的占用小,因此电池3的电芯31能量密度更大,电池3的使用安全性更高。
如图9、图10、图11与图12所示,本申请提供一种注液头4,注液头4用于向前述技术方案所提供的电池3的内部注液,注液头4包括主体部40以及延伸部41。主体部40内设有第一通道400,主体部40设置为密封连接于盖板主体20,以密封注液孔200,延伸部41凸设于主体部40,且延伸部41设置为穿设于注液孔200,延伸部41的顶端410设置为抵顶于密封部110并进入壳体30的内部,顶端410的外周开设有通道开口411,通道开口411连通于第一通道400。
通过设置能够穿设于注液孔200的延伸部41,可以利用延伸部41的顶端410将密封部110抵顶至解除对注液孔200的密封,并且使顶端410进入盖板主体20与本体板结构10之间的位置,从而使顶端410外周的通道开口411连通于盖板主体20与本体板结构10之间的间隙处,以通过通道开口411对电池3内部进行抽气、注液,且在此过程中,密封部110不会堵塞通道开口411而阻碍注液头4的抽气、注液。
如前述中,当密封部110凸设有对位部112时,延伸部41还可通过抵顶于对位部112,以使对位部112带动密封部110移动至解除对注液孔200的密封。
延伸部41凸出于主体部40的凸出高度为c,为了使设于顶端410外周的通道开口411进入盖板主体20与本体板结构10之间的位置,以连通于盖板主体20与本体板结构10之间的间隙处,凸出高度c需较大,但当凸出高度c过大时,容易导致在注液过程中,延伸部41的顶端410将密封部110抵顶至与电芯31发生干涉,导致电芯31受损的情况,基于此,在一些可能实现的方式中,该高度c可满足:0.5mm≤c≤1mm,例如,高度c可为0.5mm、0.6mm、0.7mm、0.8mm、0.9mm或1mm等。
在一些可能实现的方式中,顶端410可具有远离主体部40的顶面410a,顶面410a设置为抵顶于密封部110并进入电池3的内部,顶面410a可开设有第二通道412,第二通道412连通于第一通道400,通道开口411开设于顶端410的外周以及顶面410a,且通道开口411连通于第二通道412,从而,在注液头4的制造过程中,可通过在顶面410a一侧对延伸部41进行加工,来形成连通于第二通道412的通道开口411,通道开口411的成形工艺更简单,尤其是当通道开口411为多个时,无需更换加工方向,就可以制造得到多个开口方向不同的通道开口411,能够简化加工步骤。
此外,通过使通道开口411开设于顶端410的外周以及顶面410a,能够使顶面410a抵顶于密封部110时,通道开口411与密封部110之间不存在间隔,从而在注液过程中,不易在通道开口411与密封部110之间产生气泡。
根据实际的使用设计需要,在一些可能实现的方式中,顶端410的外周可具有与顶面410a连接的外周面410b,通道开口411设于该外周面410b,该外周面410b可与顶面410a相垂直或相倾斜,或者,外周面410b还可为弧面或其他异形面等。
相关技术中,根据注液头4的工作方式区分,通常有两类注液头4,一类是通过对电池3内部交替进行抽气与注液来实现呼吸式注液的注液头4,另一类是通过同时对电池3内部进行抽气与注液来实现注液的注液头4。接下来,将结合附图举例介绍本实施例提供的注液头4分别为该两类注液头4时,本实施例提供的注液头4的具体结构。
如图10、图11与图12所示,在一些可能实现的方式中,注液头4设置为向电池3内部进行呼吸式的注液,在注液头4抽气的过程中,该注液头4的通道开口411作为抽气口使用,第一通道400作为抽气通道使用,在注液头4注液的过程中,该注液头4的通道开口411作为注液口使用,第一通道400作为注液通道使用。
在一些可能实现的方式中,通道开口411可为多个,多个通道开口411沿顶端410的周向间隔设置,多个通道开口411均连通于第一通道400,从而通过增加通道开口411的数量,能够增大通道开口411的总开口面积,从而降低抽气、注液过程中,流体在通道开口411处的流速,以降低在抽气、注液的过程中,空气流动、电解液注入对电池3内部产生的影响。
如图13所示,在一些可能实现的方式中,注液头4通过同时对电池3内部进行抽气与注液来实现注液,第一通道400可为多个,多个第一通道400间隔设置,多个第一通道400中,至少一个第一通道400为注液通道400a,且剩余的至少一个第一通道400为抽气通道400b,通道开口411也可为多个,多个通道开口411间隔设置,多个通道开口411中,至少一个通道开口411为注液开口411a,且剩余的至少一个通道开口411为抽气开口411b,注液开口411a连通于注液通道400a,抽气开口411b连通于抽气通道400b,从而注液头4能够通过抽气通道400b以及抽气开口411b对电池3内部进行抽气的同时,还能够通过注液通道400a以及注液开口411a向电池3内部进行注液,以在注液过程中,使电池3内部的气压维持在较稳定的范围内。
在一些可能实现的方式中,可使多个注液开口411a连通于同一个注液通道400a,以降低在注液过程中,自多个注液开口411a处注入的电解液的流速,从而降低电解液冲击电池3内部造成对电池3内部的影响。
在一些可能实现的方式中,可使多个抽气开口411b连通于同一个抽气通道400b,以降低在抽气过程中,多个抽气开口411b处空气的流速,从而降低空气流动造成对电池3内部的影响。
在一些可能实现的方式中,主体部40还可设有密封圈401,密封圈401位于主体部40的凸设有延伸部41的一侧,且环绕于延伸部41的外周,主体部40通过密封圈401密封抵接于盖板主体20,从而对注液孔200的密封效果较好,更加能够避免在抽气的过程中主体部40与盖板主体20之间漏气,在注液的过程中主体部40与盖板主体20之间漏液的情况。
在一些可能实现的方式中,主体部40的表面还可环绕延伸部41设有设置槽402,密封圈401部分位于设置槽402内并连接于设置槽402的槽壁,从而密封圈401与主体部40的有效连接面积更大,密封圈401与主体部40的连接稳固性更好。
如图14所示,本申请提供一种注液设备5,注液设备5包括抽气装置50、注液装置51以及前述技术方案所提供的注液头4,抽气装置50以及注液装置51分别连接于注液头4,且分别连通于第一通道400(请参见图11),通过设置前述的注液头4,能够向前述技术方案所提供的电池3内部进行注液,且注液过程中受密封结构11(请参见图12)的阻碍小。
Claims (20)
- 一种绝缘板(1),用于电池(3)的盖板组件(2),所述盖板组件(2)包括盖板主体(20)和所述绝缘板(1),所述盖板主体(20)开设有注液孔(200),所述绝缘板(1)包括:本体板结构(10),所述本体板结构(10)设于所述盖板主体(20)的一侧;以及,密封结构(11),所述密封结构(11)包括密封部(110)以及连接部(111),所述密封部(110)设于所述本体板结构(10)靠近所述盖板主体(20)的一侧,所述密封部(110)设置为密封所述注液孔(200),所述连接部(111)连接于所述密封部(110)与所述本体板结构(10)之间,所述连接部(111)具有弹性。
- 根据权利要求1所述的绝缘板(1),其中,所述密封部(110)的远离所述本体板结构(10)的一侧具有密封面(110a),所述密封面(110a)设置为抵接于所述盖板主体(20),以密封所述注液孔(200);所述连接部(111)凸出于所述本体板结构(10)的高度小于或等于所述密封面(110a)凸出于所述本体板结构(10)的高度。
- 根据权利要求2所述的绝缘板(1),其中,所述密封面(110a)具有外包络圆直径R,4mm≤R≤8mm,和/或,所述密封面(110a)的面积为S1,所述注液孔(200)的半径为a,2≤S1/(πa 2 )≤5,其中,面积S1的单位为mm 2 ,半径a的单位为mm。
- 根据权利要求2所述的绝缘板(1),其中,所述密封面(110a)具有第一中轴线(M1),所述密封结构(11)还包括对位部(112),所述对位部(112)凸设于所述密封面(110a),所述对位部(112)设置为伸入所述注液孔(200)内部,以使所述密封面(110a)的所述第一中轴线重合于所述注液孔(200)的第二中轴线。
- 根据权利要求4所述的绝缘板(1),其中,所述对位部(112)的外周具有引导面(112a),所述引导面(112a)设置为引导所述对位部(112)伸入所述注液孔(200)。
- 根据权利要求5所述的绝缘板(1),其中,所述对位部(112)为圆台结构,所述对位部以所述第一中轴线(M1)为轴心,所述圆台结构的外周面形成所述引导面(112a)。
- 根据权利要求2所述的绝缘板(1),其中,所述连接部(111)为至少部分弯曲的条状结构,所述连接部(111)的两相对端分别连接于所述密封部(110)以及所述本体板结构(10),且所述连接部(111)为多个,多个所述连接部(111)环绕所述密封部(110)间隔设置。
- 根据权利要求7所述的绝缘板(1),其中,所述连接部(111)形成为背向所述本体板结构(10)弯曲凸出的条状结构,沿垂直于所述密封面(110a)的方向上,所述连接部(111)具有高度H,沿平行于所述密封面(110a)的方向上,所述连接部(111)具有长度L,0.2≤H/L≤1.5。
- 根据权利要求7所述的绝缘板(1),其中,沿垂直于所述密封面(110a)的方向上,所述连接部(111)具有厚度,所述连接部(111)为不等厚的结构;和/或,沿平行于所述密封面(110a)的方向上,所述连接部(111)具有宽度,所述连接部(111)为不等宽的结构。
- 根据权利要求9所述的绝缘板(1),其中,所述连接部(111)为不等厚的结构时,所述厚度最小为t1,0.2mm≤t1≤1mm;和/或,所述连接部(111)为不等宽的结构时,所述宽度最小为t2,0.2mm≤t2≤1mm。
- 根据权利要求1-10任一项所述的绝缘板(1),其中,所述本体板结构(10)的表面凸设有加强筋(100),所述连接部(111)连接于所述密封部(110)与所述加强筋(100)之间。
- 根据权利要求1-10任一项所述的绝缘板(1),其中,所述本体板结构(10)设有第一通孔(101),所述第一通孔(101)设置为对应于所述注液孔(200),所述密封结构(11)架设于所述第一通孔(101)。
- 一种盖板组件(2),用于电池(3),所述盖板组件(2)包括:盖板主体(20),所述盖板主体(20)开设有注液孔(200);以及,如权利要求1-12任一项所述的绝缘板(1),所述本体板结构(10)设于所述盖板主体(20)的一侧,所述密封部(110)设于所述本体板结构(10)的靠近所述盖板主体(20)的一侧,且所述密封部(110)能够密封所述注液孔(200)。
- 一种电池(3),所述电池(3)包括壳体(30)、电芯(31)以及如权利要求12所述的盖板组件(2),所述壳体(30)的一侧具有开口(300),所述电芯(31)设置于所述壳体(30)内部,所述盖板组件(2)封盖所述开口(300),且所述盖板主体(20)位于所述绝缘板(1)的远离所述电芯(31)的一侧。
- 一种注液头(4),所述注液头(4)设置为向如权利要求13所述的电池(3)的内部注液,所述注液头(4)包括:主体部(40),所述主体部(40)内设有第一通道(400),所述主体部(40)设置为密封连接于所述盖板主体(20),以密封所述注液孔(200);以及,延伸部(41),所述延伸部(41)凸设于所述主体部(40),且所述延伸部(41)设置为穿设于所述注液孔(200),所述延伸部(41)的顶端(410)设置为抵顶于所述密封部(110)并进入所述壳体(30)的内部,所述顶端(410)的外周开设有通道开口(411)(300),所述通道开口(411)(300)连通于所述第一通道(400)。
- 根据权利要求15所述的注液头(4),其中,所述延伸部(41)凸出于所述主体部(40)的凸出高度为c,0.5mm≤c≤1mm。
- 根据权利要求15所述的注液头(4),其中,所述顶端(410)具有远离所述主体部(40)的顶面(410a),所述顶面(410a)设置为抵顶于所述密封部(110)并进入所述电池(3)的内部;所述顶面(410a)开设有第二通道(412),所述第二通道(412)连通于所述第一通道(400),所述通道开口(411)(300)开设于所述顶端(410)的外周以及所述顶面(410a),且所述通道开口(411)(300)连通于所述第二通道(412)。
- 根据权利要求15-17任一项所述的注液头(4),其中,所述通道开口(411)(300)为多个,多个所述通道开口(411)(300)沿所述顶端(410)的周向间隔设置,多个所述通道开口(411)(300)均连通于所述第一通道(400)。
- 根据权利要求15-17任一项所述的注液头(4),其中,所述第一通道(400)为多个,多个所述第一通道(400)间隔设置,多个所述第一通道(400)中,至少一个所述第一通道(400)为注液通道(400a),且剩余的至少一个所述第一通道(400)为抽气通道(400b);所述通道开口(411)(300)为多个,多个所述通道开口(411)(300)间隔设置,多个所述通道开口(411)(300)中,至少一个所述通道开口(411)(300)为注液开口(411a)(300),且剩余的至少一个所述通道开口(411)(300)为抽气开口(411b)(300),所述注液开口(411a)(300)连通于所述注液通道(400a),所述抽气开口(411b)(300)连通于所述抽气通道(400b)。
- 一种注液设备(5),所述注液设备(5)包括抽气装置(50)、注液装置(51)以及如权利要求15-19任一项所述的注液头(4),所述抽气装置(50)以及所述注液装置(51)分别连接于所述注液头(4),且分别连通于所述第一通道(400)。
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| CN202310676863.XA CN116759713A (zh) | 2023-06-08 | 2023-06-08 | 绝缘板、盖板组件、电池、注液头及注液设备 |
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| JP2001256965A (ja) * | 2000-03-09 | 2001-09-21 | Matsushita Electric Ind Co Ltd | 密閉型電池およびその封栓方法 |
| CN213905553U (zh) * | 2020-10-26 | 2021-08-06 | 东莞市沃泰通新能源有限公司 | 电池注液装置 |
| CN218677522U (zh) * | 2022-11-22 | 2023-03-21 | 溧阳中科海钠科技有限责任公司 | 顶盖板、电池及用电设备 |
| CN218770011U (zh) * | 2022-11-14 | 2023-03-28 | 上海兰钧新能源科技有限公司 | 电池盖板、电池及电池模组 |
| CN116759713A (zh) * | 2023-06-08 | 2023-09-15 | 湖北亿纬动力有限公司 | 绝缘板、盖板组件、电池、注液头及注液设备 |
| CN219959198U (zh) * | 2023-06-08 | 2023-11-03 | 湖北亿纬动力有限公司 | 绝缘板、盖板组件、电池、注液头及注液设备 |
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| CN208674182U (zh) * | 2018-08-24 | 2019-03-29 | 比亚迪股份有限公司 | 电池盖板组件、单体电池、电池模组以及电动汽车 |
| CN214124072U (zh) * | 2020-09-30 | 2021-09-03 | 比亚迪股份有限公司 | 电池注液孔的密封结构、动力电池及汽车 |
| CN216213983U (zh) * | 2021-11-04 | 2022-04-05 | 宁德时代新能源科技股份有限公司 | 电池盖板组件、电池单体、电池和用电设备 |
-
2024
- 2024-06-06 WO PCT/CN2024/097789 patent/WO2024251204A1/zh not_active Ceased
- 2024-06-06 EP EP24809532.5A patent/EP4517952A4/en active Pending
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| JP2001256965A (ja) * | 2000-03-09 | 2001-09-21 | Matsushita Electric Ind Co Ltd | 密閉型電池およびその封栓方法 |
| CN213905553U (zh) * | 2020-10-26 | 2021-08-06 | 东莞市沃泰通新能源有限公司 | 电池注液装置 |
| CN218770011U (zh) * | 2022-11-14 | 2023-03-28 | 上海兰钧新能源科技有限公司 | 电池盖板、电池及电池模组 |
| CN218677522U (zh) * | 2022-11-22 | 2023-03-21 | 溧阳中科海钠科技有限责任公司 | 顶盖板、电池及用电设备 |
| CN116759713A (zh) * | 2023-06-08 | 2023-09-15 | 湖北亿纬动力有限公司 | 绝缘板、盖板组件、电池、注液头及注液设备 |
| CN219959198U (zh) * | 2023-06-08 | 2023-11-03 | 湖北亿纬动力有限公司 | 绝缘板、盖板组件、电池、注液头及注液设备 |
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| EP4517952A1 (en) | 2025-03-05 |
| EP4517952A4 (en) | 2026-03-04 |
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