WO2025009812A1 - 버스바 조립체 및 이를 포함하는 전지 팩 - Google Patents
버스바 조립체 및 이를 포함하는 전지 팩 Download PDFInfo
- Publication number
- WO2025009812A1 WO2025009812A1 PCT/KR2024/009027 KR2024009027W WO2025009812A1 WO 2025009812 A1 WO2025009812 A1 WO 2025009812A1 KR 2024009027 W KR2024009027 W KR 2024009027W WO 2025009812 A1 WO2025009812 A1 WO 2025009812A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- busbar assembly
- battery
- module
- cap
- insulating layer
- 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
Images
Classifications
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/524—Organic material
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/591—Covers
-
- 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 invention relates to a busbar assembly and a battery pack including the same, and more specifically, to a busbar assembly having improved insulation stability and a battery pack including the same.
- rechargeable secondary batteries are being used as a power source for electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (P-HEVs) as a solution to air pollution caused by existing gasoline vehicles that use fossil fuels, and thus the need for the development of secondary batteries is increasing.
- EVs electric vehicles
- HEVs hybrid electric vehicles
- P-HEVs plug-in hybrid electric vehicles
- lithium secondary batteries are receiving attention due to their advantages such as the fact that they have almost no memory effect compared to nickel-based secondary batteries, are free to charge and discharge, have a very low self-discharge rate, and have high energy density.
- the lithium secondary battery mainly use lithium oxide and carbon material as positive electrode active materials and negative electrode active materials, respectively.
- the lithium secondary battery comprises an electrode assembly in which positive and negative electrode plates, each of which is coated with the positive and negative electrode active materials, are arranged with a separator between them, and a battery case that seals and stores the electrode assembly together with an electrolyte.
- lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.
- a battery module in which a plurality of battery cells are electrically connected is used.
- a plurality of battery cells are connected to each other in series or in parallel to form a battery cell stack, thereby improving capacity and output.
- one or more battery modules can be mounted together with various control and protection systems such as a BDU (Battery Disconnect Unit), a BMS (Battery Management System), and a cooling system to form a battery pack.
- BDU Battery Disconnect Unit
- BMS Battery Management System
- a battery pack composed of multiple battery modules can rapidly and severely increase in temperature due to the heat generated from multiple battery cells being added together in a narrow space.
- battery modules composed of multiple battery cells and battery packs equipped with such battery modules can obtain high output, but if the heat dissipation of the battery cells is not properly performed or if a thermal runaway phenomenon of the battery cells occurs, there is a high possibility of continuous ignition or subsequent explosion.
- a bus bar is provided that connects to the battery module.
- Figure 1 is an exploded perspective view and a combined perspective view of a conventional busbar assembly.
- a conventional busbar assembly (10) includes a busbar (20), a covering (20C) covering the busbar (20), a cap (CP), and a tape (AL) for fixing the cap (CP).
- the busbar (20) may be provided in a metal bar shape, or may be provided in a shape in which metal sheets are laminated.
- the busbar (20) includes a conductive material, and may include, for example, a copper (Cu) material.
- the covering (20C) can wrap around the bus bar (20).
- the covering (20C) can include an electrically insulating material, and for example, can include a material such as silicone or epoxy. Since the covering (20C) wraps around the bus bar (20) through which a high current flows, the bus bar (20) is prevented from coming into contact with other electrical components or conductive members other than the terminal bus bar of the battery module, thereby causing a short circuit.
- the covering (20C) is provided in a tube-like shape, so that the bus bar (20) can be inserted into the inside of the covering (20C).
- a cap (CP) is provided at both ends of the bus bar (20) for insulation.
- the cap (CP) may be, for example, a rubber cap.
- the cap (CP) may be attached to the covering (20C) using a tape (AL).
- the busbar (20) may be flexible or rigid.
- the busbar assembly (10) including the flexible busbar (20) can be bent using a jig or the like.
- a jig or the like there is a limit to the bending of the busbar assembly (10), and in particular, there is a limit to bending the busbar assembly (10) multiple times.
- the busbar assembly (10) including the rigid busbar (20) it is difficult to provide a covering (20C) that is bent multiple times without deteriorating the fire resistance.
- the problem to be solved by the present invention is to provide a busbar assembly capable of exhibiting excellent fire resistance and electrical insulation properties for a busbar including a bent portion, and a battery pack including the same.
- the busbar assembly of the present invention comprises a busbar including a body portion including a bent portion and an end portion extending from both ends of the body portion and having a through hole formed therein; an insulating layer insert injection-molded to surround the body portion; and a cap surrounding the end portion.
- the insulating layer may include a first portion surrounding the body portion and a second portion extending from the first portion and inserted into the cap.
- the thickness of the second portion is smaller than the thickness of the first portion, and the second portion can form a step with the first portion.
- the cap may include a body portion that surrounds a portion of the end portion where the through hole is formed; and an extension portion that surrounds the second portion of the insulating layer.
- the cap may have a tubular shape into which the end can be inserted.
- the insulating layer may comprise a refractory plastic.
- the cap may comprise refractory silicone.
- the invention may further include a glass fiber layer disposed on the insulating layer and the cap to surround a boundary between the insulating layer and the cap.
- the body portion may include at least one bend.
- the bend may include a vertically bent portion.
- the battery pack of the present invention comprises at least one busbar assembly according to the above; battery modules; a BDU (battery disconnect unit) module for controlling electrical connection of the battery modules; and a BMS (battery management system) module for monitoring and controlling operation of the battery modules, wherein the at least one busbar assembly electrically connects at least one of between the battery modules, between the battery module and the BDU module, between the battery module and the BMS module, and between the BDU module and the BMS module.
- BDU battery disconnect unit
- BMS battery management system
- the busbar assembly of the present invention can exhibit excellent fire resistance and insulation properties while including a busbar including a bent portion.
- Figure 1 is an exploded perspective view and a combined perspective view of a conventional busbar assembly.
- Figure 2 is a plan view of a battery pack of one embodiment.
- FIG. 3 is a perspective view of one of the battery modules included in the battery pack of FIG. 2.
- FIG 4 is a partial perspective view showing the battery module of Figure 3 with the module frame and end plate removed.
- Figure 5 is a perspective view of a bus bar of one embodiment.
- Figure 6 is a perspective view of a busbar provided with an insulating layer according to one embodiment.
- FIG. 7 is a partial side view of a busbar provided with an insulating layer according to one embodiment.
- FIG. 8 is a partial side view of a busbar provided with an insulating layer and cap of one embodiment.
- FIG. 9 is a partial side view of a busbar assembly of one embodiment.
- Figure 10 is a perspective view of a busbar assembly of one embodiment.
- a part such as a layer, film, region, or plate is said to be “over” or “on” another part, this includes not only cases where it is “directly over” the other part, but also cases where there is another part in between.
- a part is said to be “directly over” another part, it means that there is no other part in between.
- it is said to be “over” or “on” a reference part, it means that it is located above or below the reference part, and does not necessarily mean that it is located “over” or “on” in the opposite direction of gravity.
- first direction (DR1), the second direction (DR2), and the third direction (DR3) are used as relative concepts.
- the first direction (DR1), the second direction (DR2), and the third direction (DR3) may be perpendicular to each other.
- the concepts of upper and lower are described as being distinguished along the third direction (DR3).
- the upper direction or the upper direction means the third direction (DR3).
- the lower direction or the lower direction means the opposite direction to the third direction (DR3).
- Thiickness” in the specification means the length measured in the third direction (DR3).
- Figure 2 is a plan view of a battery pack of one embodiment.
- a battery pack (1000) includes a busbar assembly (100), a pack frame (1100), battery modules (1200), a BDU (battery disconnect unit) module (1300) for controlling electrical connection of the battery modules (1200), and a BMS (battery management system) module (1400) for monitoring and controlling operation of the battery modules (1200).
- At least one busbar assembly (100) according to the present embodiment electrically connects at least one of the battery modules (1200), between the battery modules (1200) and the BDU module (1300), between the battery modules (1200) and the BMS module (1400), and between the BDU module (1300) and the BMS module (1400).
- a plurality of battery modules (1200) can be accommodated in a pack frame (1100), and electrical connections between the battery modules (1200) or electrical connections between the battery modules (1200) and the BDU module (1300) can be made by the busbar assembly (100). That is, the busbar assembly (100) according to the present embodiment can be in charge of HV (High voltage) connections.
- the HV connection is a connection that serves as a power source for supplying power that requires high voltage, and means a connection between battery cells or a connection between battery modules.
- the BDU module (1300) is a member for controlling the electrical connection of the battery module (1200) and can cut off power between the power conversion device and the battery module (1200).
- the BDU module (1300) can cut off power to the battery pack (1000) when a condition occurs in which the current exceeds a set range, thereby ensuring the safety of the battery pack (1000).
- the LV connecting member (100') can be responsible for the electrical connection between the battery module (1200) and the BMS module (1400).
- the electrical connection here is an LV (Low voltage) connection, which means a sensing connection for detecting and controlling the voltage and temperature of the battery module (1200).
- sensors, etc. inside the battery module (1200) are arranged, and real-time temperature information or voltage information of the battery module (1200) is transmitted to the BMS module (1400) through the LV connecting member (100').
- the real-time operating status of the battery module (1200) can be monitored and controlled through the BMS module (1400).
- an HV current sensor is integrated into the BMS module (1400).
- the busbar assembly according to the present embodiment can be responsible for electrical connection between the battery module (1200) and the BMS module (1400) or between the BDU module (1300) and the BMS module (1400).
- the battery module (1200) described below is an exemplary structure of a battery module including a plurality of battery cells (11), and various forms of battery modules including a plurality of battery cells may be applied.
- FIG. 3 is a perspective view showing one of the battery modules included in the battery pack of FIG. 2.
- FIG 4 is a partial perspective view showing the battery module of Figure 3 with the module frame and end plate removed.
- the battery module (1200) may include a battery cell stack (11A) in which a plurality of battery cells (11) are stacked.
- the battery cell stack (11A) is illustrated in FIG. 4. This battery cell stack (11A) may be accommodated in a module frame (30) and an end plate (40).
- the battery cell (11) may be a pouch-type battery cell.
- This pouch-type battery cell may be formed by housing an electrode assembly in a pouch case of a laminate sheet including a resin layer and a metal layer, and then fusing the outer periphery of the pouch case.
- This battery cell (11) may be formed in a rectangular sheet structure.
- An electrode lead (11L) connected to the electrode assembly protrudes to the outside of the pouch case, and the electrode leads (11L) of each battery cell (11) may be electrically connected to each other via a lead bus bar (21).
- the battery cell (11) of the present invention is not limited to a pouch-type battery cell.
- At least one electrode lead (11L) may be connected to a terminal bus bar (22).
- a portion of the terminal bus bar (22) may be exposed to the outside of the battery module (1200) as illustrated in FIG. 3.
- Both the lead bus bar (21) and the terminal bus bar (22) may include a metal material having excellent electrical conductivity.
- the busbar assembly (100) is electrically connected to the terminal busbar (22), so that the HV connection described above can be made. That is, the battery module (1200) can be electrically connected to another battery module (1200), a BDU module (1300), or a BMS module (1400) via the busbar assembly (100) connected to the terminal busbar (22).
- busbar assembly according to one embodiment will be described with reference to FIGS. 5 to 10.
- Figure 5 is a perspective view of a bus bar of one embodiment.
- a bus bar (200) of one embodiment includes a body portion (210) and an end portion (220).
- the end portion (220) extends from both ends of the body portion (210).
- Through holes (HH) for connection with terminal bus bars (22, see FIG. 3) of a battery module (1200, see FIG. 2) can be formed at both ends (220) of the bus bar (20).
- a fastening member can be inserted into the through hole (HH) to connect the bus bar (200) to an external electrical device.
- a bolt can be inserted into the through hole (HH) of the end portion (220) to connect the bus bar (200) and the terminal bus bar (22, see FIG. 3) of the battery module (1200, see FIG. 3).
- This bus bar (20) can be in charge of an HV (High voltage) connection in a battery pack (1000, see FIG. 2).
- the HV connection means a connection that serves as a power source for supplying electric power.
- the bus bar (20) is a configuration that guides the electrical connection of the battery module (1200, see Fig. 2), and is generally made of a metal material with excellent electrical conductivity.
- the bus bar (200) may include a copper (Cu) material.
- the body portion (210) may correspond to the center of the bus bar (200).
- the body portion (210) includes a bend portion (BD).
- the bend portion (BD) means a portion where the body portion (210) is bent.
- the bend portion (BD) may be bent at various angles, and may be bent vertically, for example.
- the body portion (210) may include one or more bend portions (BD), and FIG. 5 illustrates, by way of example, that the body portion (210) includes a plurality of bend portions (BD).
- the bending direction and the bending angle of the bend portions (BD) may be different from each other, may be the same as each other, or at least one may be different from the others.
- the body part (210) can be bent into various shapes, including a bending part (BD). Accordingly, the battery modules (1200, see FIG. 2) to be connected can be effectively connected, and the battery pack (1000, see FIG. 2) can improve the utilization of internal space.
- BD bending part
- bus bar (200) is described as including a body part (210) and an end part (220), but the body part (210) and the end part (220) have an integral shape.
- Figure 6 is a perspective view of a busbar provided with an insulating layer according to one embodiment.
- an insulating layer (300) may be provided to cover the bus bar (200).
- the insulating layer (300) is insert injection molded to surround the body portion (210). Accordingly, the insulating layer (300) may be molded along the shape of the body portion (210) including the bent portion (BD).
- the insulating layer (300) may have excellent fire resistance, including a refractory plastic.
- the refractory plastic may block the flame without causing a hole or drip for a certain period of time when exposed to flame.
- the refractory plastic may protect the internal structure by forming a carbonized layer in the flame.
- the refractory plastic may include at least one of a PPO (Polyphenylene Oxide)-based material, a PA (Polyamide)-based material, and a PBT (Polybutylene Terephthalate)-based material.
- the insulating layer (300) may insulate the body portion (210) of the busbar (200) even in a flame or at a high temperature, thereby preventing the busbar (200) from contacting other electrical components or conductive members, thereby causing a short circuit.
- the insulation layer (300) may be more advantageous for insert injection molding the busbar (200) including the bent portion (BD) by including a refractory plastic.
- the refractory plastic has better flowability than refractory silicone, the shape of the busbar (200) including the bent portion (BD) can be better molded.
- the insulating layer (300) is provided to surround the body portion (210). That is, the insulating layer (300) is provided to insulate the body portion (210, see FIG. 5). In order to improve insulation, the insulating layer (300) may further surround at least a portion of the end portion (220). See FIG. 7 in this regard.
- FIG. 7 is a partial side view of a busbar provided with an insulating layer according to one embodiment.
- Figure 7 is an enlarged side view of a part of the body (210, see Figure 6) of a bus bar (200) and one end (220).
- the insulating layer (300) may include a first portion (310) that surrounds the body portion (210) of the bus bar (200) and a second portion (320) that surrounds a portion of the end portion (220).
- the second portion (320) extends from the first portion (310).
- the second portion (320) extends from the first portion (310) to an extent that it does not cover the through hole (HH) of the end portion (220), and may be covered by a cap (400, see FIG. 8) described below.
- the first portion (310) may have a first thickness (T1)
- the second portion (320) may have a second thickness (T1) smaller than the first thickness (T1).
- the second portion (320) forms a step with the first portion (310), and accordingly, a cap (400, see FIG. 8) described below may be fitted around the second portion (320).
- the insulating layer (300) can prevent the bus bar (200) from being exposed at the point where the cap (400, see FIG. 8) is connected, including the second portion (320), and can secure a sufficient insulating distance.
- FIG. 8 is a partial side view of a busbar provided with an insulating layer and cap of one embodiment.
- Figure 8 is an enlarged side view of a part of the body (210, see Figure 6) of a bus bar (200) and one end (220).
- a cap (400) may be provided at the end portion (220).
- the cap (400) is provided to surround the end portion (220), and specifically, is provided to surround the end portion (220) and the second portion (320).
- the cap (400) may have a tube shape into which the end portion (220) and the second portion (320) may be inserted.
- the cap (400) may have a shape in which at least a portion of the lower portion is open. That is, it is sufficient for the cap (400) to surround the side and upper surfaces of the end portion (220) and the second portion (320), and is not limited to one shape.
- the cap (400) may include a main body portion (410) and an extension portion (420) extended from the main body portion (410).
- the main body portion (410) may surround a part of the end portion (220) in which the through hole (HH) is formed.
- the main body portion (410) may be a portion that covers the end of the end portion (220).
- the extension portion (420) may be a portion that extends from the main body portion (410) and surrounds the second portion (320) of the insulating layer (300).
- the main body portion (410) may have a greater thickness than the extension portion (420) so as to accommodate a fastening member inserted into the through hole (HH).
- the cap (400) has excellent refractory properties, including refractory silicone. Unlike general silicone materials that burn when exposed to flame or at high temperatures, the refractory silicone can be ceramified at high temperatures. Therefore, the refractory silicone can be ceramified without burning when exposed to flame, thereby maintaining insulation properties for the busbar (200). For example, the refractory silicone can be ceramized at a temperature of 500 degrees Celsius or higher and 1700 degrees Celsius or lower. However, the temperature range at which the refractory silicone is ceramized is not limited thereto.
- the refractory silicone may include a silicone polymer and silica.
- the applied silicone polymer may be a polysiloxane series compound having a vinyl group as a functional group, and may serve as a base material of the refractory silicone material.
- the applied silica may be fumed silica as a reinforcing filler included in the silicone polymer.
- a high-purity silicon chloride (SiCl 4 ) compound may be manufactured by reacting metal silicon as a main raw material with hydrochloric acid and a purification process. Fumed silica may be obtained by reacting this with hydrogen and oxygen in a high-temperature flame.
- the refractory silicone may include platinum (Pt) as a catalyst.
- a cap (400) including refractory silicone can maintain electrical insulation properties by being ceramized rather than burning or melting even when exposed to flame or placed in a high-temperature environment. Accordingly, the cap (400) can insulate the end (220) of the bus bar (200) even in flame or high temperature, thereby preventing the bus bar (200) from contacting other electrical components or conductive members and causing a short circuit.
- the bus bar (200) can be insulated with a fire-resistant material throughout the body (210) and the end (220) by applying an insulation layer (300) and a cap (400).
- the bus bar (200) covered by the second part (320) of the insulation layer (300) can be insulated once more by the cap (400) to secure an insulation distance (ID1).
- an external fastening member may be inserted into the through hole (HH, see FIG. 5) of the end portion (220) before the cap (400) is provided. Accordingly, the end portion (220) may be electrically connected to the terminal bus bar (22, see FIG. 3).
- the terminal bus bar 22, see FIG. 3.
- FIG. 9 is a partial side view of a busbar assembly of one embodiment.
- Figure 9 is an enlarged partial side view of one end of a busbar assembly (100).
- the busbar assembly (100) of one embodiment may further include a glass fiber layer (500).
- the glass fiber layer (500) is provided to surround a boundary of the insulating layer (300) and the cap (400).
- the glass fiber layer (500) may be provided to further surround a portion of the insulating layer (300) and a portion of the cap (400), including the boundary of the insulating layer (300) and the cap (400).
- an additional insulation distance (ID2) can be secured.
- the glass fiber layer (500) can provide wear resistance to the busbar assembly (100) and act as a primary protective layer to physically protect the internal structure.
- the glass fiber layer (500) can prevent the boundary between the insulation layer (300) and the cap (400) from being directly exposed to external flames.
- the glass fiber layer (500) can also provide structural rigidity to the busbar assembly (100) to improve insulation performance. For example, when the cap (400) is ceramicized in a flame or high-temperature environment, the cap (400) can maintain electrical insulation, but its strength is reduced and it can be broken by an external force. The glass fiber layer (500) can provide structural rigidity to prevent the cap (400) from being broken by an external force.
- the glass fiber layer (500) is provided in the form of a glass fiber tape and can be formed by winding it multiple times.
- bus bar (200) one end of the bus bar (200) is enlarged and illustrated and described, but the same description can be applied to the other end of the bus bar (200).
- Figure 10 is a perspective view of a busbar assembly of one embodiment.
- a busbar assembly (100) of one embodiment may include a busbar (200) including a bent portion (BD), an insulation layer (300) that is insert injection molded to surround a body portion (210) of the busbar (200), a cap (400) that surrounds an end portion (220) of the busbar (200), and a glass fiber layer (500). Accordingly, the busbar assembly (100) including the busbar (200) including the bent portion (BD) may have excellent fire resistance and insulation properties.
- One or more battery modules according to the present embodiment described above can be mounted together with various control and protection systems such as a BMS (Battery Management System), a BDU (Battery Disconnect Unit), and a cooling system to form a battery pack.
- BMS Battery Management System
- BDU Battery Disconnect Unit
- cooling system to form a battery pack.
- the above battery module or battery pack can be applied to various devices. Specifically, it can be applied to means of transportation such as electric bicycles, electric cars, hybrids, or ESS (Energy Storage Systems), but is not limited thereto, and can be applied to various devices that can use secondary batteries.
- means of transportation such as electric bicycles, electric cars, hybrids, or ESS (Energy Storage Systems), but is not limited thereto, and can be applied to various devices that can use secondary batteries.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (11)
- 굴곡부를 포함하는 바디부 및 상기 바디부의 양 단에서 연장되고, 관통홀이 형성된 단부를 포함하는 버스바;상기 바디부를 감싸도록 인서트 사출 성형된 절연층; 및상기 단부를 감싸는 캡을 포함하는 버스바 조립체.
- 제1항에서,상기 절연층은 상기 바디부를 감싸는 제1 부분 및 상기 제1 부분에서 연장되어 상기 캡에 삽입되는 제2 부분을 포함하는 버스바 조립체.
- 제2항에서,상기 제2 부분의 두께는 상기 제1 부분의 두께보다 작고,상기 제2 부분은 상기 제1 부분과 단차를 형성하는 버스바 조립체.
- 제2항에서,상기 캡은,상기 관통홀이 형성된 상기 단부의 일부를 감싸는 본체부; 및상기 절연층의 상기 제2 부분을 감싸는 연장부를 포함하는 버스바 조립체.
- 제1항에서,상기 캡은 상기 단부가 삽입될 수 있는 튜브 형상을 갖는 버스바 조립체.
- 제1항에서,상기 절연층은 내화 플라스틱을 포함하는 버스바 조립체.
- 제1항에서,상기 캡은 내화 실리콘을 포함하는 버스바 조립체.
- 제1항에서,상기 절연층 및 상기 캡의 경계를 감싸도록, 상기 절연층 및 상기 캡 상에 배치된 유리 섬유층을 더 포함하는 버스바 조립체.
- 제1항에서,상기 바디부는 적어도 1개 이상의 굴곡부를 포함하는 버스바 조립체.
- 제1항에서,상기 굴곡부는 수직하게 굽어진 부분을 포함하는 버스바 조립체.
- 제1항 내지 제10항 중 어느 한 항에 따른 적어도 하나의 버스바 조립체;전지 모듈들;상기 전지 모듈들의 전기적 연결을 제어하기 위한 BDU(battery disconnect unit) 모듈; 및상기 전지 모듈의 작동을 모니터링 및 제어하는 BMS(Battery Management System) 모듈을 포함하고,상기 적어도 하나의 버스바 조립체는, 상기 전지 모듈들 사이, 상기 전지 모듈과 상기 BDU 모듈 사이, 상기 전지 모듈과 상기 BMS 모듈 사이 및 상기 BDU 모듈과 상기 BMS 모듈 사이 중 적어도 하나를 전기적으로 연결하는 전지 팩.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24836260.0A EP4597734A4 (en) | 2023-07-04 | 2024-06-27 | OMNIBUS BAR AND BATTERY PACK INCLUDING |
| JP2025527114A JP2025539081A (ja) | 2023-07-04 | 2024-06-27 | バスバー組立体およびこれを含む電池パック |
| CN202480004709.0A CN120188329A (zh) | 2023-07-04 | 2024-06-27 | 汇流条组件以及包括该汇流条组件的电池组 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020230086265A KR20250006460A (ko) | 2023-07-04 | 2023-07-04 | 버스바 조립체 및 이를 포함하는 전지 팩 |
| KR10-2023-0086265 | 2023-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025009812A1 true WO2025009812A1 (ko) | 2025-01-09 |
Family
ID=94171873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/009027 Ceased WO2025009812A1 (ko) | 2023-07-04 | 2024-06-27 | 버스바 조립체 및 이를 포함하는 전지 팩 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4597734A4 (ko) |
| JP (1) | JP2025539081A (ko) |
| KR (1) | KR20250006460A (ko) |
| CN (1) | CN120188329A (ko) |
| WO (1) | WO2025009812A1 (ko) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4138804B2 (ja) * | 2003-11-18 | 2008-08-27 | 株式会社日立製作所 | コントロールモジュール |
| KR20160041311A (ko) * | 2014-10-07 | 2016-04-18 | 주식회사 엘지화학 | 내화성 안전 부재를 포함하는 전지팩 |
| KR102041494B1 (ko) * | 2019-01-22 | 2019-11-07 | 에스 티 (주) | 전기차용 배터리 연결 버스바의 제조방법 |
| KR20210050983A (ko) * | 2019-10-29 | 2021-05-10 | 주식회사 엘지화학 | 화재 안전성이 우수한 버스바 |
| KR102411256B1 (ko) * | 2022-01-18 | 2022-06-23 | 삼보모터스주식회사 | 배터리 모듈 어셈블리 |
| KR20230086265A (ko) | 2021-12-08 | 2023-06-15 | 차규민 | 새싹 보리를 함유한 화장품 조성물 및 그 제조 방법 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014199716A (ja) * | 2011-08-11 | 2014-10-23 | パナソニック株式会社 | 電池パック |
| KR102209824B1 (ko) * | 2016-07-21 | 2021-01-29 | 삼성에스디아이 주식회사 | 배터리 모듈 |
| JP2018181780A (ja) * | 2017-04-21 | 2018-11-15 | 矢崎総業株式会社 | 積層バスバおよび電池モジュール |
| KR102270734B1 (ko) * | 2019-12-17 | 2021-06-29 | 주식회사 유라코퍼레이션 | 버스바 및 러버캡 고정구조 |
| CN211428259U (zh) * | 2020-02-28 | 2020-09-04 | 恒大新能源汽车科技(广东)有限公司 | 连接母线 |
| KR102926964B1 (ko) * | 2020-05-15 | 2026-02-11 | 주식회사 엘지에너지솔루션 | 화재 안전성이 우수한 버스바 |
| KR20220163007A (ko) * | 2021-06-02 | 2022-12-09 | 주식회사 엘지에너지솔루션 | 인터버스바 어셈블리 및 이를 포함한 배터리 모듈 연결 구조와 배터리 모듈-릴레이박스 연결 구조 |
| KR102895043B1 (ko) * | 2021-08-25 | 2025-12-02 | 주식회사 엘지에너지솔루션 | 연결 와이어 및 이를 포함하는 전지팩 |
-
2023
- 2023-07-04 KR KR1020230086265A patent/KR20250006460A/ko active Pending
-
2024
- 2024-06-27 CN CN202480004709.0A patent/CN120188329A/zh active Pending
- 2024-06-27 JP JP2025527114A patent/JP2025539081A/ja active Pending
- 2024-06-27 WO PCT/KR2024/009027 patent/WO2025009812A1/ko not_active Ceased
- 2024-06-27 EP EP24836260.0A patent/EP4597734A4/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4138804B2 (ja) * | 2003-11-18 | 2008-08-27 | 株式会社日立製作所 | コントロールモジュール |
| KR20160041311A (ko) * | 2014-10-07 | 2016-04-18 | 주식회사 엘지화학 | 내화성 안전 부재를 포함하는 전지팩 |
| KR102041494B1 (ko) * | 2019-01-22 | 2019-11-07 | 에스 티 (주) | 전기차용 배터리 연결 버스바의 제조방법 |
| KR20210050983A (ko) * | 2019-10-29 | 2021-05-10 | 주식회사 엘지화학 | 화재 안전성이 우수한 버스바 |
| KR20230086265A (ko) | 2021-12-08 | 2023-06-15 | 차규민 | 새싹 보리를 함유한 화장품 조성물 및 그 제조 방법 |
| KR102411256B1 (ko) * | 2022-01-18 | 2022-06-23 | 삼보모터스주식회사 | 배터리 모듈 어셈블리 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4597734A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4597734A1 (en) | 2025-08-06 |
| KR20250006460A (ko) | 2025-01-13 |
| EP4597734A4 (en) | 2026-04-29 |
| JP2025539081A (ja) | 2025-12-03 |
| CN120188329A (zh) | 2025-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022250287A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
| WO2023027522A1 (ko) | 연결 와이어 및 이를 포함하는 전지팩 | |
| WO2022270732A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
| WO2024150933A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| WO2022080754A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
| WO2024263012A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2024162623A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| WO2024162624A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| WO2024150934A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| WO2025037751A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2024257997A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2025018870A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| WO2024237406A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2024162625A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| WO2021107317A1 (ko) | 전지 팩 및 이를 포함하는 디바이스 | |
| WO2025239549A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2025033776A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2024162626A1 (ko) | 버스바 조립체 및 이를 포함하는 전지팩 | |
| KR20250006460A (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2026019104A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| WO2025174180A1 (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| KR20250014833A (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| KR20250030682A (ko) | 버스바 조립체 및 이를 포함하는 전지 팩 | |
| KR20250026003A (ko) | 전지팩 및 이를 포함하는 디바이스 | |
| KR20250043062A (ko) | 전지팩 및 이를 포함하는 디바이스 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 24836260 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024836260 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202517041860 Country of ref document: IN |
|
| ENP | Entry into the national phase |
Ref document number: 2024836260 Country of ref document: EP Effective date: 20250429 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202480004709.0 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 2025527114 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025527114 Country of ref document: JP |
|
| WWP | Wipo information: published in national office |
Ref document number: 202480004709.0 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2024836260 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |