WO2023098213A1 - 电池包和电动车辆 - Google Patents

电池包和电动车辆 Download PDF

Info

Publication number
WO2023098213A1
WO2023098213A1 PCT/CN2022/117696 CN2022117696W WO2023098213A1 WO 2023098213 A1 WO2023098213 A1 WO 2023098213A1 CN 2022117696 W CN2022117696 W CN 2022117696W WO 2023098213 A1 WO2023098213 A1 WO 2023098213A1
Authority
WO
WIPO (PCT)
Prior art keywords
tray
heating
heating section
battery pack
pack according
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
Application number
PCT/CN2022/117696
Other languages
English (en)
French (fr)
Inventor
王骁
尤悦丘
舒元茂
郑卫鑫
鲁志佩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to JP2024515107A priority Critical patent/JP2024539820A/ja
Priority to EP22900022.9A priority patent/EP4395007A4/en
Priority to KR1020247010360A priority patent/KR20240052032A/ko
Publication of WO2023098213A1 publication Critical patent/WO2023098213A1/zh
Priority to US18/622,478 priority patent/US20240243382A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present disclosure relates to the technical field of vehicle components, in particular to a battery pack and an electric vehicle.
  • the operating stability of the battery is closely related to the ambient temperature of the battery. At extremely cold temperatures (-40°C to -10°C), the overall temperature of the battery during long-term storage will be close to the ambient temperature, and the extremely low ambient temperature will affect the capacity of the battery's internal cells on the one hand, resulting in insufficient battery discharge On the other hand, it will affect the power of the battery and limit the power output of electric vehicles.
  • an object of the embodiments of the present application is to provide a new technical solution for a battery pack and an electric vehicle.
  • the battery pack and the electric vehicle provided by this application form the heating assembly in sections, so that the heating assemblies with different heating power can heat different areas in the tray, ensuring the balance of the ambient temperature inside the tray.
  • the charging and discharging performance of the battery pack is improved.
  • a battery pack including:
  • a heating assembly the heating assembly is arranged in the tray, the heating assembly includes a plurality of heating segments, and the heating power of the plurality of heating segments is different, and the heating power of the plurality of heating segments is different for the plurality of heating segments in the tray. Zones are heated separately to equalize the ambient temperature within the tray.
  • the heating assembly includes a main heating section, the main heating section includes a first main heating section and a second main heating section, and the first main heating section and the second main heating section are respectively arranged on the tray
  • the first main heating section and the second main heating section are configured to heat the low-temperature area inside the tray on opposite sides.
  • the number of the first main heating section is at least one
  • the number of the second main heating section is at least one
  • the first main heating section is arranged inside the long side of one side of the tray, so The second main heating section is arranged inside the long side of the other side of the tray.
  • the heating assembly further includes at least one secondary heating segment, and the secondary heating segment is disposed on the inner side of the short side of the tray.
  • the heating power of the main heating section is greater than the heating power of the secondary heating section, the main heating section is configured to adjust the temperature of the first region in the tray, and the secondary heating section is configured for regulating the temperature of the second zone within the tray;
  • the temperature of the first area is lower than the temperature of the second area.
  • the main heating section and the secondary heating section are connected in series or in parallel.
  • At least one battery module is also included, and the battery module is arranged in the tray.
  • the heating assembly is disposed between the tray and the battery module.
  • multiple battery modules are arranged in the tray, and the heating assembly is arranged between adjacent battery modules.
  • the temperature difference between the highest temperature area and the lowest temperature area in the tray is less than or equal to 5°C.
  • the heating component is at least one of a PI heating film or a PTC heater.
  • thermal insulation cotton is also included, and the thermal insulation cotton is attached to the outer peripheral side of the tray.
  • the tray is made of metal.
  • the material of the tray is one of aluminum alloy or stainless steel.
  • the number of the first main heating sections is two.
  • the number of the second main heating sections is two.
  • the number of the secondary heating sections is three.
  • the primary heating section and the secondary heating section are connected in series to form a chain-type heating assembly, and the heating assembly is arranged extending along the gap between the tray and the battery module.
  • the primary heating section and the secondary heating section are connected in parallel to form a stacked primary heating section and secondary heating section.
  • an electric vehicle including the battery pack described in the first aspect.
  • An embodiment of the present application provides a battery pack, the battery pack includes a tray and a heating assembly, the heating assembly is disposed in the tray, and the heating assembly includes a plurality of heating segments.
  • the heating powers of the multiple heating segments are different, and the multiple heating segments respectively heat multiple regions in the tray, so as to balance the ambient temperature in the tray.
  • the heating components are formed in sections so that the heating components with different heating powers can heat different areas in the tray, so as to ensure the balance of the ambient temperature inside the tray and improve the charging and discharging performance of the battery pack.
  • FIG. 1 is a structural schematic diagram 1 of a battery pack provided in an embodiment of the present application.
  • Fig. 2 is a structural schematic diagram II of a battery pack provided in the embodiment of the present application.
  • FIG. 3 is a cross-sectional view of a battery pack provided in an embodiment of the present application.
  • Figure 4 is a partially enlarged view of Figure 3;
  • Fig. 5 is a perspective view of another battery pack provided by the embodiment of the present application.
  • FIG. 6 is a top view of another battery pack provided by the embodiment of the present application.
  • the embodiment of the present application provides a battery pack that can be used in electric vehicles and provide power for electric vehicles, and the battery pack includes:
  • the heating assembly 3 is arranged in the tray 1, the heating assembly 3 includes a plurality of heating segments, the heating assembly 3 can heat the environment in the tray 1, specifically It is to heat the air in the tray 1 and other components in the environment inside the tray 1 .
  • the heating powers of the plurality of heating sections are different, and the plurality of heating sections respectively heat a plurality of regions in the tray 1 to balance the ambient temperature in the tray 1 .
  • the ambient temperature of different regions in the tray 1 is different.
  • the heating assembly 3 heats different areas in the tray 1, the heating assembly 3 is composed of segments, and the heating assembly with a larger heating power can be placed in a relatively lower temperature area in the tray 1.
  • Area specifically, when the battery module is arranged in the tray 1, the side of the battery pole piece in the battery module generates less heat, and the area in the tray 1 opposite to the side of the battery pole piece will become a relatively low temperature.
  • the heating assembly with a small heating power in a relatively high temperature area in the tray 1, specifically, when the battery module is installed in the tray 1, the surface of the battery cell pole piece in the battery module is the main heating surface , the area in the tray 1 opposite to the heating surface of the cell pole piece will become a relatively high temperature area, so that after the heating component 3 heats the tray 1, the temperature of different areas in the tray 1 Closer, the temperature difference between different areas in the tray 1 is reduced.
  • the material of the tray 1 can be a metal material, such as aluminum alloy or stainless steel to make the tray 1, so as to ensure the structural strength of the tray 1, so that the tray 1 can carry the required structural parts inside.
  • the battery pack provided in the embodiment of the present application includes a tray 1 and a heating assembly 3 , and the heating assembly 3 is arranged in the tray 1 .
  • the heating assembly 3 includes a plurality of heating sections. In the heating assembly 3 of the battery pack, the heating power of the heating sections is different, so as to evenly heat multiple areas in the tray 1 .
  • the heating assembly 3 is formed in sections, so that the heating assemblies with different heating power can evenly heat different areas in the tray 1, which can ensure the balance of the internal ambient temperature of the tray 1 and improve the charging of the battery pack.
  • the discharge performance ensures its power output as an electric vehicle power battery.
  • the heating assembly 3 includes a main heating section, and the main heating section includes a first main heating section and a second main heating section, and the first main heating section and the second main heating section are respectively arranged on the On opposite sides of the tray 1 , the first main heating section and the second main heating section are configured to heat the low temperature area in the tray 1 .
  • the battery and other components in the tray 1 need to maintain a suitable temperature during storage and operation.
  • the battery module in the tray 1 needs to obtain a certain amount of heat during storage and operation to ensure its temperature.
  • the temperature of the rectangular battery module is relatively lower on its long side (that is, the side with the largest area in the side of the battery module, referred to as the large side), requiring more heat to maintain relatively stable performance.
  • the first main heating section and the second main heating section provided in the embodiment of the present application can be arranged on opposite sides of the tray 1, for example, on the long side of the tray 1 and the rectangular battery module. On opposite sides, the first main heating section and the second main heating section can heat the low-temperature area in the tray 1 to ensure the balance of the ambient temperature in the tray 1 .
  • the number of the first main heating section is at least one
  • the number of the second main heating section is at least one
  • the first main heating section is arranged on the inner side of the long side of one side of the tray 1
  • the second main heating section is disposed on the inner side of the other long side of the tray 1 .
  • the number of the first main heating section is two, and the first main heating section includes a second heating section 32 and a third heating section 33, the second heating section There are two main heating sections, the second main heating section includes a fifth heating section 35 and a sixth heating section 36, and the second heating section 32 and the third heating section 33 are arranged on one side of the tray 1
  • the tray 1 includes two opposite long side beams
  • the second heating section 32 and the third heating section 33 are arranged on the inside of the long side beam on one side of the tray 1
  • the fifth heating section 35 and the sixth heating section 36 are arranged on the inner side of the long side on the other side of the tray 1
  • the fifth heating section 35 and the sixth heating section 36 are arranged on the inner side of the long side beam on the other side of the tray 1 .
  • the second heating section 32 and the third heating section 33 can be connected in series to form a chained heating section, and the fifth heating section 35 and the sixth heating section 36 can also be connected in series to form a chained heating section, and the chained
  • the length of the heating section can be equal to the length of the upper long side of the tray 1 to ensure sufficient heating and heat preservation of the temperature in the tray 1 .
  • the heating assembly 3 further includes a secondary heating section, the number of which is at least one, and the secondary heating section is disposed on the inner side of the short side of the tray 1 .
  • the number of the secondary heating sections is three, the secondary heating sections include the first heating section 31, the fourth heating section 34 and the seventh heating section 37, the first heating section 31, the fourth heating section 34 and the seventh heating section
  • the seven heating segments 37 are arranged inside the short sides of the tray 1 , that is, inside the short side beams of the tray 1 .
  • the components in the tray 1 can maintain a suitable temperature in all directions during storage and operation.
  • the battery modules in the tray 1 can be viewed from all sides of the tray 1 during storage and operation.
  • the first heating section 31 , the fourth heating section 34 and the seventh heating section 37 provided in the embodiment of the present application can be respectively arranged on both sides of the opposite short sides of the tray 1 to ensure the heating of the heating assembly 3 .
  • the heating efficiency and the balance of the ambient temperature in the tray 1 can be respectively arranged on both sides of the opposite short sides of the tray 1 to ensure the heating of the heating assembly 3 .
  • the heating power of the main heating section is greater than the heating power of the secondary heating section, the main heating section is configured to adjust the temperature of the first area in the tray 1, and the secondary heating section is controlled by configured to adjust the temperature of the second area in the tray 1;
  • the temperature of the first area is lower than the temperature of the second area.
  • the ambient temperatures in different areas of the tray 1 are different.
  • the heating assembly 3 heats different areas in the tray 1, the heating assembly 3 is composed of sections, and the main heating section with a larger heating power can be placed in the tray 1 and the temperature is relatively low. area, and the secondary heating section with a smaller heating power is placed in a relatively higher temperature area in the tray 1, so that after the heating assembly 3 heats the tray 1, the different areas in the tray 1 The temperatures are relatively close, reducing the temperature difference between different regions in the tray 1 .
  • the battery pack further includes at least one battery module 2 , and the battery module 2 is arranged in the tray 1 .
  • the number of the battery module 2 may be one or multiple, and a plurality of the battery modules 2 are arranged in the tray 1, and the tray 1 is used to carry the batteries inside it.
  • the heating assembly 3 is arranged in the tray 1, and the heating assembly 3 can heat the air in the tray 1, so that the ambient temperature in the tray 1 can be kept at a suitable temperature for the battery module 2.
  • the storage and operating temperature improve the capacity and service life of the battery module 2 .
  • the heating assembly 3 is disposed between the tray 1 and the battery module 2 .
  • the bottom surface of the tray 1 can support the battery module 2, and the side of the tray 1 will surround the battery module. Peripheral side of group 2.
  • the heating assembly 3 is arranged between the tray 1 and the battery module 2. Specifically, the heating assembly 3 is arranged between the bottom surface of the tray 1 and the bottom of the battery module 2, or the heating assembly 3 is arranged on the tray Between the inner side of the side beam 1 and the peripheral side of the battery module 2, the heating component 3 can be used to heat the environment in the tray 1, so as to achieve the purpose of heating and keeping the battery module 2 .
  • multiple battery modules 2 are arranged in the tray 1 , and the heating assembly 3 is arranged between adjacent battery modules 2 .
  • the tray 1 can be used as a supporting frame of the battery pack to stably support and position the battery module 2 .
  • the structure of the tray 1 can be designed according to the size of the battery module 2, for example, the structure of the matching tray 1 can be designed according to the size of a battery module 2, or the structure of a matching tray 1 can be designed according to the size of multiple battery modules 2.
  • a plurality of battery modules 2 can be fixed through a beam partition, and the heating assembly 3 can be fixed on the beam partition.
  • two battery modules 2 are arranged symmetrically in the tray 1 , and each battery module 2 occupies nearly half of the space in the tray 1 .
  • the space is separated by a partition, and the heating assembly 3 is a ring-shaped assembly with a partial opening, and is arranged in the side of the tray 1 and between the peripheral sides of the two battery modules 2, so as to heat the environment in the tray 1 , so as to achieve the functions of heating and keeping warm the two battery modules 2 .
  • the primary heating section and the secondary heating section are connected in series.
  • the series connection between the main heating section and the secondary heating section may be the series connection between the internal circuit of the main heating section and the internal circuit of the secondary heating section, and the series connection between the main heating section and the secondary heating section
  • a chain heating assembly 3 can be formed, so that the heating assembly 3 can be extended and arranged along the gap between the tray 1 and the battery module 2 , so as to heat different positions between the tray 1 and the battery module 2 .
  • the heating assembly 3 can be heated by resistance.
  • the heating power of the main heating section can be greater than the heating power of the secondary heating section under the same current passing situation, so that the main heating section
  • the heating section and the secondary heating section are used to heat and keep warm the positions with different heating requirements between the tray 1 and the battery module 2 .
  • the internal circuit between the main heating section and the secondary heating section can also be connected in parallel.
  • the main heating section and the secondary heating section can be stacked, or the length of the connecting line between the battery module 2 and the heating section can be controlled to form the main heating section and the secondary heating section.
  • the chain structure of the secondary heating section is used to heat different positions between the tray 1 and the battery module 2 .
  • the adjustment of different heating powers can be realized by controlling the different currents in the main heating section and the secondary heating section, so as to achieve the balance between the tray 1 and the battery module 2. The purpose of heating in locations with different heating needs.
  • the heating assembly 3 is as shown in FIG. 2 .
  • the heating assembly 3 with a ring structure is arranged between the inner side wall of the tray 1 and the battery module 2 , and the matching heating power of each heating section can be obtained through temperature simulation of the battery pack.
  • the specific parameters of the simulation include:
  • the ambient temperature is -20°C
  • the entire battery pack is kept at a low temperature of -20°C for 12 hours
  • the lowest temperature of the cells in the battery module is not lower than 0°C
  • the temperature inside the battery pack is extremely poor (the difference between the maximum temperature and the minimum temperature) Not greater than 5°C
  • the power consumption of the heating element 3 is 1kWh.
  • the maximum usable power for heating and heat preservation of the entire battery pack is calculated to be 85W.
  • the specific distribution of heating power includes: the heating power of the first heating section 31 is 10W, the heating power of the second heating section 32 is 5W, and the heating power of the third heating section 32 is 5W.
  • the heating power of the heating section 33 is 5W
  • the heating power of the fourth heating section 34 is 15W
  • the heating power of the fifth heating section 35 is 20W
  • the heating power of the sixth heating section 36 is 15W
  • the heating power of the seventh heating section 37 is 15W.
  • the simulation results show that for a battery pack stored at -20°C for 12 hours, the lowest temperature of the battery cells in battery module 2 is 0.58°C, and the temperature range inside the battery pack is 2.94°C. , effectively ensuring the capacity and power of the battery module 2 inside the battery pack.
  • the lowest temperature of the battery cells in the battery pack is -7.88°C
  • the extreme temperature difference in the battery pack is 9.32°C . Too low temperature and too high temperature extreme difference have seriously affected the capacity and power of the battery cells inside the battery pack.
  • the temperature difference between the highest temperature area and the lowest temperature area in the tray 1 is less than or equal to 5°C.
  • the battery modules 2 all have suitable storage and operating temperatures.
  • the temperature of the local area in the tray 1 is too high, the service life of the battery module 2 will be reduced in the area of excessively high temperature for a long time, and even the risk of explosion will occur; while the temperature of the local area in the tray 1
  • the capacity and power of the battery module 2 will be reduced if the temperature is too low for a long time.
  • the segmented heating assembly 3 of the embodiment of the present application can be used to set heating with different heating powers according to the heating requirements of different areas in the tray 1 Assemblies to ensure that the temperature difference between the highest temperature area and the lowest temperature area in the tray 1 is less than or equal to 5°C, so as to improve the uniformity of the ambient temperature in the tray 1.
  • the heating component 3 is at least one of a PI heating film or a PTC heater.
  • the PI heating film can be a heating film obtained by combining a PI film (Polyimidefilm) with a metal circuit, and the PI heating film adopts a resistance wire heating method.
  • a PI film Polyimidefilm
  • the PI heating film adopts a resistance wire heating method.
  • PTC heater is a heating assembly composed of a PTC ceramic heating element and an aluminum tube. The PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, and can efficiently heat the inside of the tray 1 .
  • the battery pack further includes thermal insulation cotton 4 , and the thermal insulation cotton 4 is attached to the outer peripheral side of the tray 1 .
  • the thermal insulation cotton 4 can be made of polymer materials such as polyurethane or polyimide, and the thermal insulation cotton 4 can be pasted on the outside of the frame of the tray 1 through an adhesive, for example, the thermal insulation cotton 4 can be bonded in a circular shape.
  • the thermal insulation cotton 4 has high heat insulation performance, and can play a good thermal insulation effect on the battery pack, so as to ensure the stable operation of the battery module 2 in the tray 1 .
  • the embodiment of the present application also provides an electric vehicle, including the battery pack.
  • the battery pack can be used as a power battery of the electric vehicle
  • the heating assembly 3 of the battery pack includes a plurality of heating segments.
  • the heating power of the plurality of heating segments is different. , so as to evenly heat multiple regions in the tray 1 .
  • the heating assembly 3 is composed of sections, so that the heating assemblies with different heating powers can evenly heat the regions of different temperatures in the tray 1, which ensures the balance of the ambient temperature inside the tray 1 and improves the temperature of the tray 1.
  • the charging and discharging performance of the battery pack improves the power output of the electric vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池包和电动车辆，该电池包包括托盘和加热组件。该加热组件设置于该托盘内，并且该加热组件包括多个加热段。该电池包的加热组件中，多个该加热段的加热功率不同，多个该加热段对该托盘内的多个区域分别进行加热，以均衡该托盘内的环境温度。

Description

电池包和电动车辆
本申请要求于2021年11月30日提交中国专利局、申请号为202122978627.2、申请名称为“电池包和电动车辆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及车辆组件技术领域，尤其涉及一种电池包和电动车辆。
背景技术
随着人们环保意识的不断增强，越来越多的电动汽车走进了人们的视野。电池作为电动汽车的主要动力组件，对电动汽车的长期稳定运行起着关键的作用。
而电池的运行稳定性与电池所处的环境温度息息相关。在极寒温度(-40℃至-10℃)下，电池在长期储存时的整体温度会接近环境温度，而极低的环境温度一方面会影响电池内部电芯的容量，导致电池放电量不足，另一方面会影响电池功率的发挥，限制了电动汽车的动力输出。
发明内容
为解决上述技术问题，本申请实施例的一个目的是提供一种电池包和电动车辆的新技术方案。本申请提供的电池包和电动车辆通过分段的形式组成所述加热组件，以使得具有不同加热功率的加热组件对托盘内不同区域进行加热，保证了所述托盘内部的环境温度的均衡性，提升所述电池包的充放电性能。
根据本申请的第一方面，提供了一种电池包，包括：
托盘；
加热组件，所述加热组件设置于所述托盘内，所述加热组件包括多个加热段，并且多个所述加热段的加热功率不同，多个所述加热段对所述托盘内的多个区域分别进行加热，以均衡所述托盘内的环境温度。
可选地，所述加热组件包括主加热段，所述主加热段包括第一主加热段和第二主加热段，所述第一主加热段和第二主加热段分别设置于所述托盘内相对的两侧，所述第一主加热段和第二主加热段被配置为对所述托盘内的低温区域进行加热。
可选地，所述第一主加热段的数量至少为一个，所述第二主加热段的数量至少为一个，所述第一主加热段设置于所述托盘一侧长边的内侧，所述第二主加热段设置于所述托盘另一侧长边的内侧。
可选地，所述加热组件还包括次加热段，所述次加热段的数量至少为一个，所述次加热段设置于所述托盘短边的内侧。
可选地，所述主加热段的加热功率大于所述次加热段的加热功率，所述主加热段被配置为对所述托盘内第一区域的温度进行调节，所述次加热段被配置为对所述托盘内第二区域的温度进行调节；
在所述加热组件对所述托盘内的区域进行加热前，所述第一区域的温度低于所述第二区域的温度。
可选地，所述主加热段和次加热段之间串联或者并联。
可选地，还包括至少一个电池模组，所述电池模组设置于所述托盘内。
可选地，所述加热组件设置于所述托盘与所述电池模组之间。
可选地，所述托盘内设置有多个所述电池模组，所述加热组件设置于相邻所述电池模组之间。
可选地，所述托盘内最高温区域的温度与最低温区域的温度差值小于或者等于5℃。
可选地，所述加热组件为PI加热膜或者PTC加热器中的至少一种。
可选地，还包括保温棉，所述保温棉贴合于所述托盘的外周侧。
可选地，所述托盘的材质为金属材料。
可选地，所述托盘的材质为铝合金或不锈钢中的一种。
可选地，所述第一主加热段的数量为两个。
可选地，所述第二主加热段的数量为两个。
可选地，所述次加热段的数量为三个。
可选地，所述主加热段和所述次加热段串联后形成链式的加热组件，加热组件沿托盘与电池模组之间的间隙延伸布置。
可选地，所述主加热段和所述次加热段并联后形成叠层设置的主加热段和次加热段。
根据本申请的第二方面，提供了一种电动车辆，包括第一方面所述的电池包。
本申请实施例的一个技术效果在于：
本申请实施例提供了一种电池包，所述电池包包括托盘和加热组件，所述加热组件设置于所述托盘内，所述加热组件包括多个加热段。所述电池包的加热组件中，多个所述加热段的加热功率不同，多个所述加热段对所述托盘内的多个区域分别进行加热，以均衡所述托盘内的环境温度。通过分段的形式组成所述加热组件，以使得具有不同加热功率的加热组件对托盘内不同区域进行加热，保证所述托盘内部环境温度的均衡性，提升所述电池包的充放电性能。
通过以下参照附图对本申请的示例性实施例的详细描述，本申请的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本申请的实施例，并且连同其说明一起用于解释本申请的原理。
图1为本申请实施例提供的一种电池包的结构示意图一；
图2为本申请实施例提供的一种电池包的结构示意图二；
图3为本申请实施例提供的一种电池包的剖面图；
图4为图3的局部放大图；
图5为本申请实施例提供的另一种电池包的立体图；
图6为本申请实施例提供的另一种电池包的俯视图。
其中：1、托盘；2、电池模组；3、加热组件；31、第一加热段；32、第二加热段；33、第三加热段；34、第四加热段；35、第五加热段；36、第六加热段；37、第七加热段；4、保温棉。
具体实施方式
现在将参照附图来详细描述本申请的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本申请的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
参照图1至图4，本申请实施例提供了一种电池包，所述电池包可以用于电动汽车并为对电动汽车提供动力，所述电池包包括：
托盘1和加热组件3。
参见图1和图2，所述加热组件3设置于所述托盘1内，所述加热组件3包括多个加热段，所述加热组件3可以对所述托盘1内的环境进行加热，具体可以是对所述托盘1内的空气以及处在所述托盘1内环境中的其他部件进行加热。并且多个所述加热段的加热功率不同，多个所述加热段对所述托盘1内的多个区域分别进行加热，以均衡所述托盘1内的环境温度。
具体地，所述托盘1内不同区域的环境温度不同。所述加热组件3在对所述托盘1内的不同区域进行加热时，采用分段的形式组成所述加热组件3，可以将加热功率较大的加热组件放置于托盘1内温度相对较低的区域，具体地，托盘1内设置有电池模组时，电池模组内电芯极片的侧面发热量较少，托盘1内与电芯极片的侧面相对的区域会成为温度相对较低的区域；而将加热功率较小的加热组件放置于托盘1内温度相对较高的区域，具体地，托盘1内设置有电池模组时，电池模组内电芯极片的表面为主要发热面，托盘1内与电芯极片的发热面相对的区域会成为温度相对较高的区域，以使得所述加热组件3对所述托盘1内进行加热后，所述托盘1内不同区域的温度较为接近，减小了所述托盘1内不同区域的温差。
另外，所述托盘1的材质可以为金属材料，比如采用铝合金或者不锈钢制成托盘1，以保证托盘1的结构强度，使得托盘1可以承载其内部的所需的结构件。
本申请实施例提供的所述电池包包括托盘1和加热组件3，所述加热组件3设置于所述托盘1内。所述加热组件3包括多个加热段，所述电池包的加热组件3中，多个所述加热段的加热功率不同，以对所述托盘1内的多个区域进行均衡加热。通过分段的形式组成所述加热组件3，以使得具有不同加热功率的加热组件对托盘1内不同区域进行均衡加热，可以保证所述托盘1内部环境温度的均衡性提高所述电池包的充放电性能，保证其作为电动汽车动力电池的动力输出。
可选地，所述加热组件3包括主加热段，所述主加热段包括第一主加热段和第二主加热段，所述第一主加热段和第二主加热段分别设置于所述托盘1内相对的两侧，所述第一主加热段和第二主加热段被配置为对所述托盘1内的低温区域进行加热。
具体地，所述托盘1内的电池等组件在储存和运行时需要保持适宜的温度，比如在寒冷环境下，托盘1内的电池模组在储存和运行时需要获取一定的热量来保证其温度的适宜性，而且长方形的电池模组在其长侧面(也就是电池模组侧面中面积最大的面，简称大面)温度相对更低，需要更大的热量才能保持相对稳定的性能。本申请实施例提供的所述第一主加热段和第二主加热段可以分别设置于所述托盘1内相对的两侧，比如分别设置于所述托盘1内与长方形电池模组的长侧面相对的两侧，所述第一主加热段和第二主加热段可以为对所述托盘1内的低温区域进行加热，以保证所述托盘1内环境温度的均衡性。
可选地，所述第一主加热段的数量至少为一个，所述第二主加热段的数量至少为一个，所述第一主加热段设置于所述托盘1一侧长边的内侧，所述第二主加热段设置于所述托盘1另一侧长边的内侧。
在一种具体的实施方式中，参见图2，所述第一主加热段的数量为两个，所述第一主加热段包括第二加热段32和第三加热段33，所述第二主加热段的数量为两个，所述第二主加热段包括第五加热段35和第六加热段36，所述第二加热段32和第三加热段33设置于所述托盘1一侧长边的内侧，具体为托盘1包括相对的两个长边梁，第二加热段32和第三加热段33设置于所述托盘1一侧长边梁的内侧，所述第五加热段35和第六加热段36设置于所述托盘1另一侧长边的内侧，第五加热段35和第六加热段36设置于所述托盘1另一侧长边梁的内侧。所述第二加热段32和第三加热段33之间可以串联形成链式的加热段，所述第五加热段35和第六加热段36也可以串联形成链式的加热段，而且链式加热段的长度可以等同于托盘1上长边的长度，以保证对所述托盘1内温度的充分加热和保温。
可选地，参见图2，所述加热组件3还包括次加热段，所述次加热段的数量至少为一个，所述次加热段设置于所述托盘1短边的内侧。
所述次加热段的数量为三个，所述次加热段包括第一加热段31、第四加热段34和第七加热段37，所述第一加热段31、第四加热段34和第七加热段37设置于所述托盘1短边的内侧，也就是所述托盘1短边梁的内侧。
具体地，所述托盘1内的组件在储存和运行时可以在全方位上保持适宜的温度，比如在寒冷环境下，托盘1内的电池模组在储存和运行时可以从托盘1的各个侧面获取一定的热量来保证其温度的适宜性，而长方形的电池模组在其短侧面(也就是小面)的加热需求小于其长侧面(也就是大面)。本申请实施例提供的所述第一加热段31、第四加热段34和第七加热段37可以分别设置于所述托盘1内相对的短侧面的两侧，以保证所述加热组件3的加热效率和所述托盘1内环境温度的均衡性。
可选地，所述主加热段的加热功率大于所述次加热段的加热功率，所述主加热段被配置为对所述托盘1内第一区域的温度进行调节，所述次加热段被配置为对所述托盘1内第二区域的温度进行调节；
在所述加热组件3对所述托盘1内的区域进行加热前，所述第一区域的温度低于所述第二区域的温度。
具体地，由于所述托盘1内组件的排布方式和结构的变化，使得所述托盘1内不同区域的环境温度不同。所述加热组件3在对所述托盘1内的不同区域进行加热时，采用分段的形式组成所述加热组件3，可以将加热功率较大的主加热段放置于托盘1内温度相对较低的区域，而将加热功率较小的次加热段放置于托盘1内温度相对较高的区域，以使得所述加热组件3对所述托盘1内进行加热后，所述托盘1内不同区域的温度较为接近，降低了所述托盘1内不同区域的温差。
可选地，所述电池包还包括至少一个电池模组2，所述电池模组2设置于所述托盘1内。
具体地，所述电池模组2的数量可以为一个，也可以为多个，多个所述电池模组2设置于所述托盘1内，所述托盘1用于承载其内部的所述电池模组2。所述加热组件3设置于所述托盘1内，所述加热组件3可以对所述托盘1内的空气进行加热，以使得所述托盘1内的环境温度保持在所述电池模组2适宜的存储和运行温度，提高了所述电池模组2的容量和使用寿命。
可选地，参见图1和图3，所述加热组件3设置于所述托盘1与所述电池模组2之间。
具体地，所述电池模组2放置于所述托盘1内时，所述托盘1的底面可以对所述电池模组2 进行支撑，而所述托盘1的侧边会包围在所述电池模组2的周侧。所述加热组件3设置于所述托盘1与所述电池模组2之间具体可以为，加热组件3设置于托盘1的底面与电池模组2的底部之间，或者加热组件3设置于托盘1的边梁内侧与电池模组2的周侧之间，均可以实现所述加热组件3对所述托盘1内的环境进行加热，以达到对所述电池模组2进行加热和保温的目的。
可选地，参见图5和图6，所述托盘1内设置有多个所述电池模组2，所述加热组件3设置于相邻所述电池模组2之间。
具体地，所述托盘1可以作为所述电池包的支撑骨架，以将所述电池模组2进行稳定支撑和定位。而所述托盘1的结构可以根据所述电池模组2的尺寸进行设计，比如根据一个电池模组2的尺寸设计相匹配的托盘1的结构，或者根据多个电池模组2的尺寸设计相匹配的托盘1的框架结构，多个电池模组2之间可以通过横梁隔板进行固定，加热组件3可以固定于该横梁隔板上。
在一种具体的实施方式中，如图1所示，托盘1内对称设置有两个电池模组2，每个电池模组2占据托盘1内接近一半的空间，两个电池模组2之间通过隔板隔开，加热组件3呈局部开口的环形组件，并且设置于托盘1的侧边内和两个电池模组2的周侧之间，实现对所述托盘1内的环境进行加热，以达到对两个电池模组2进行加热和保温的作用。
可选地，参见图1和图2，所述主加热段和次加热段之间串联。
具体地，所述主加热段和次加热段之间的串联可以是所述主加热段的内部电路和次加热段的内部电路之间的串联，所述主加热段和次加热段之间串联后可以形成链式的加热组件3，以使得加热组件3可以沿托盘1与电池模组2之间的间隙延伸布置，达到对托盘1与电池模组2之间不同位置的加热。比如加热组件3可以采用电阻加热，通过设置主加热段的电阻大于次加热段的电阻，便可以在相同电流通过情况下实现主加热段的加热功率大于次加热段的加热功率，使得主加热段和次加热段针对托盘1与电池模组2之间具有不同加热需求的位置进行加热和保温。
另外，所述主加热段和次加热段之间的内部电路也可以并联。所述主加热段和次加热段之间并联设置后，主加热段和次加热段可以叠层设置，也可以通过电池模组2与加热段之间连接线的长短控制来形成主加热段和次加热段的链式结构，以达到对托盘1与电池模组2之间不同位置的加热。在主加热段和次加热段两端电压相等的情况下，可以通过主加热段和次加热段中不同电流的大小控制来实现不同加热功率的调节，达到对托盘1与电池模组2之间具有不同加热需求的位置进行加热的目的。
进一步地，第一加热段31、第二加热段32、第三加热段33、第四加热段34、第五加热段35、第六加热段36和第七加热段37依次串联形成环形结构的加热组件3，如图2所示。环形结构的加热组件3设置于托盘1的侧壁内侧和电池模组2之间，通过对电池包的温度仿真可以获得每个加热段匹配的加热功率。
具体地，仿真的具体参数包括：
环境温度为-20℃，整个电池包处于-20℃的低温中12小时，电池模组中电芯最低温度不低于0℃，电池包内温度极差(最大温度与最小温度的差值)不大于5℃，加热组件3的耗电量为1kWh。
在上述参数条件下计算出整个电池包加热保温的最大可使用功率为85W，具体分配加热功率包括：第一加热段31的加热功率为10W，第二加热段32的加热功率为5W，第三加热段33的加热功率为5W，第四加热段34的加热功率为15W，第五加热段35的加热功率为20W，第六加热段36的加热功率为15W，第七加热段37加热功率为15W。
仿真结果显示，在-20℃环境储存12小时的电池包，电池模组2中电芯的最低温度为0.58℃，电池包内温度极差为2.94℃，适宜的温度和较小的温度极差，有效保证了所述电池包内部电池模组2的容量和功率的发挥。
同时在其他条件不变的情况下，对不包含本申请实施例提供的加热组件3的电池包进行仿真时，电池包内电芯温度最低为-7.88℃，电池包内温度极差为9.32℃，过低的温度和过大的温度极差，严重影响了电池包内部电芯的容量和功率的发挥。
可选地，所述托盘1内最高温区域的温度与最低温区域的温度差值小于或者等于5℃。
具体地，所述托盘1内电池模组2在储存及运行的过程中，电池模组2均具有适宜的储存和运行温度。在所述托盘1内的局部区域温度过高时，电池模组2长时间在过高的温度区域内会降低其使用寿命，甚至产生爆炸的风险；而在所述托盘1内的局部区域温度过低时，所述电池模组2长时间在过低的温度区域内会降低其容量和功率。为了使得所述电池模组2处在温度适宜并且温差较小的环境中，可以通过本申请实施例的分段式加热组件3，根据托盘1内不同区域的加热需求来设置不同加热功率的加热组件，以保证托盘1内最高温区域的温度与最低温区域的温度差值小于或者等于5℃，提高所述托盘1内环境温度的均匀性。
可选地，所述加热组件3为PI加热膜或者PTC加热器中的至少一种。
具体地，PI加热膜可以为PI膜(聚酰亚胺薄膜，Polyimidefilm)与金属线路组合得到的加热膜，PI加热膜采用电阻丝加热的方式，当多个加热组件采用PI加热膜时，可以通过分配PI加热膜内部的电阻，从而实现多个加热组件在串联时加热功率的分配，加热功率具体为P＝I2R，以达到所述加热组件3对所述托盘1内部不同区域的灵活加热。而PTC加热器是由PTC陶瓷发热元件与铝管组成的加热组件，PTC加热器具有热阻小和换热效率高的优点，可以对托盘1内进行高效加热。
可选地，参见图1和图2，所述电池包还包括保温棉4，所述保温棉4贴合于所述托盘1的外周侧。
具体地，所述保温棉4可以采用聚氨酯或聚酰亚胺等高分子材料制成，并可以通过粘接剂将保温棉4粘贴于托盘1边框的外部，比如保温棉4可以呈环形粘接在托盘1边框的四周。所述保温棉4具有较高的隔热性能，可以对所述电池包起到很好的保温作用，以保证所述托盘1内电池模组2的稳定运行。
本申请实施例还提供了一种电动车辆，包括所述的电池包。
具体地，所述电池包可以作为所述电动车辆的动力电池，所述电池包的加热组件3包括多个加热段，所述电池包的加热组件中，多个所述加热段的加热功率不同，以对所述托盘1内的多个区域进行均衡加热。通过分段的形式组成所述加热组件3，以使得具有不同加热功率的加热组件对托盘1内不同温度的区域进行均衡加热，保证了所述托盘1内部的环境温度的均衡性，提升所述电池包的充放电性能，提高了所述电动汽车的动力输出。
虽然已经通过例子对本申请的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本申请的范围。本领域的技术人员应该理解，可在不脱离本申请的范围和精神的情况下，对以上实施例进行修改。本申请的范围由所附权利要求来限定。

Claims (20)

  1. 一种电池包，包括：
    托盘(1)；以及
    加热组件(3)，所述加热组件(3)设置于所述托盘(1)内，所述加热组件(3)包括多个加热段，并且多个所述加热段的加热功率不同，多个所述加热段对所述托盘(1)内的多个区域分别进行加热，以均衡所述托盘(1)内的环境温度。
  2. 根据权利要求1所述的电池包，其特征在于，所述加热组件(3)包括主加热段，所述主加热段包括第一主加热段和第二主加热段，所述第一主加热段和第二主加热段分别设置于所述托盘(1)内相对的两侧，所述第一主加热段和第二主加热段被配置为对所述托盘(1)内的低温区域进行加热。
  3. 根据权利要求2所述的电池包，其特征在于，所述第一主加热段的数量至少为一个，所述第二主加热段的数量至少为一个，所述第一主加热段设置于所述托盘(1)一侧长边的内侧，所述第二主加热段设置于所述托盘(1)另一侧长边的内侧。
  4. 根据权利要求2或3所述的电池包，其特征在于，所述加热组件(3)还包括次加热段，所述次加热段的数量至少为一个，所述次加热段设置于所述托盘(1)短边的内侧。
  5. 根据权利要求4所述的电池包，其特征在于，所述主加热段的加热功率大于所述次加热段的加热功率，所述主加热段被配置为对所述托盘(1)内第一区域的温度进行调节，所述次加热段被配置为对所述托盘(1)内第二区域的温度进行调节；以及
    在所述加热组件(3)对所述托盘(1)内的区域进行加热前，所述第一区域的温度低于所述第二区域的温度。
  6. 根据权利要求4或5所述的电池包，其特征在于，所述主加热段和所述次加热段之间串联或者并联。
  7. 根据权利要求1-6中任一项所述的电池包，其特征在于，还包括至少一个电池模组(2)，所述电池模组(2)设置于所述托盘(1)内。
  8. 根据权利要求7所述的电池包，其特征在于，所述加热组件(3)设置于所述托盘(1)与所述电池模组(2)之间。
  9. 根据权利要求7所述的电池包，其特征在于，所述托盘(1)内设置有多个所述电池模组(2)，所述加热组件(3)设置于相邻所述电池模组(2)之间。
  10. 根据权利要求1-9中任一项所述的电池包，其特征在于，所述托盘(1)内最高温区域的温度与最低温区域的温度差值小于或者等于5℃。
  11. 根据权利要求1-10中任一项所述的电池包，其特征在于，所述加热组件(3)为PI加热膜或者PTC加热器中的至少一种。
  12. 根据权利要求1-11中任一项所述的电池包，其特征在于，还包括保温棉(4)，所述保温棉(4)贴合于所述托盘(1)的外周侧。
  13. 根据权利要求1-12中任一项所述的电池包，其特征在于，所述托盘(1)的材质为金属材料。
  14. 根据权利要求1-13中任一项所述的电池包，其特征在于，所述托盘(1)的材质为铝合金或不锈钢中的一种。
  15. 根据权利要求2-6中任一项所述的电池包，其特征在于，所述第一主加热段的数量为两个。
  16. 根据权利要求2-6中任一项所述的电池包，其特征在于，所述第二主加热段的数量为两个。
  17. 根据权利要求4-6中任一项所述的电池包，其特征在于，所述次加热段的数量为三个。
  18. 根据权利要求4-6中任一项所述的电池包，其特征在于，所述主加热段和所述次加热段串联后形成链式的加热组件(3)，加热组件(3)沿所述托盘(1)与电池模组(2)之间的间隙延伸布置。
  19. 根据权利要求4-6中任一项所述的电池包，其特征在于，所述主加热段和所述次加热段并联后形成叠层设置的主加热段和次加热段。
  20. 一种电动车辆，其特征在于，包括权利要求1-19中任一项所述的电池包。
PCT/CN2022/117696 2021-11-30 2022-09-08 电池包和电动车辆 Ceased WO2023098213A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2024515107A JP2024539820A (ja) 2021-11-30 2022-09-08 電池パック及び電動車両
EP22900022.9A EP4395007A4 (en) 2021-11-30 2022-09-08 Battery pack and electric vehicle
KR1020247010360A KR20240052032A (ko) 2021-11-30 2022-09-08 배터리 팩 및 전기 차량
US18/622,478 US20240243382A1 (en) 2021-11-30 2024-03-29 Battery pack and electric vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202122978627.2 2021-11-30
CN202122978627.2U CN216529063U (zh) 2021-11-30 2021-11-30 电池包和电动车辆

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/622,478 Continuation US20240243382A1 (en) 2021-11-30 2024-03-29 Battery pack and electric vehicle

Publications (1)

Publication Number Publication Date
WO2023098213A1 true WO2023098213A1 (zh) 2023-06-08

Family

ID=81465469

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/117696 Ceased WO2023098213A1 (zh) 2021-11-30 2022-09-08 电池包和电动车辆

Country Status (6)

Country Link
US (1) US20240243382A1 (zh)
EP (1) EP4395007A4 (zh)
JP (1) JP2024539820A (zh)
KR (1) KR20240052032A (zh)
CN (1) CN216529063U (zh)
WO (1) WO2023098213A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117613467A (zh) * 2023-11-28 2024-02-27 江苏前晨汽车科技有限公司 一种电芯ptc加热模块布局的仿真方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN216529063U (zh) * 2021-11-30 2022-05-13 比亚迪股份有限公司 电池包和电动车辆
CN219843049U (zh) * 2023-03-30 2023-10-17 比亚迪股份有限公司 电池包及用电装置
CN119447481A (zh) * 2023-07-31 2025-02-14 宁德时代新能源科技股份有限公司 电池烘烤治具、装置、电池生产设备及加热板制作方法
WO2026062197A1 (de) * 2024-09-20 2026-03-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Elektrischer energiespeicher

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080299448A1 (en) * 2006-11-20 2008-12-04 Derrick Scott Buck Battery unit with temperature control device
CN210489698U (zh) * 2019-10-29 2020-05-08 蜂巢能源科技有限公司 电池模组、电池包和车辆
CN111416181A (zh) * 2020-03-27 2020-07-14 华霆（合肥）动力技术有限公司 加热组件和电池包
CN111628249A (zh) * 2020-06-03 2020-09-04 湖北亿纬动力有限公司 一种方形电池模组及其加热方法和加热可靠性测试方法
CN214254547U (zh) * 2021-01-29 2021-09-21 比亚迪股份有限公司 动力电池包和具有其的车辆
CN214254629U (zh) * 2021-03-12 2021-09-21 凯博能源科技有限公司 电池包下箱体及电池包
CN216529063U (zh) * 2021-11-30 2022-05-13 比亚迪股份有限公司 电池包和电动车辆

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2702372B2 (ja) * 1993-03-26 1998-01-21 日本碍子株式会社 高温二次電池の加熱装置
JP5845436B2 (ja) * 2011-04-11 2016-01-20 パナソニックＩｐマネジメント株式会社 バッテリーヒータ装置
JP2015138648A (ja) * 2014-01-22 2015-07-30 住友電気工業株式会社 電池モジュール

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080299448A1 (en) * 2006-11-20 2008-12-04 Derrick Scott Buck Battery unit with temperature control device
CN210489698U (zh) * 2019-10-29 2020-05-08 蜂巢能源科技有限公司 电池模组、电池包和车辆
CN111416181A (zh) * 2020-03-27 2020-07-14 华霆（合肥）动力技术有限公司 加热组件和电池包
CN111628249A (zh) * 2020-06-03 2020-09-04 湖北亿纬动力有限公司 一种方形电池模组及其加热方法和加热可靠性测试方法
CN214254547U (zh) * 2021-01-29 2021-09-21 比亚迪股份有限公司 动力电池包和具有其的车辆
CN214254629U (zh) * 2021-03-12 2021-09-21 凯博能源科技有限公司 电池包下箱体及电池包
CN216529063U (zh) * 2021-11-30 2022-05-13 比亚迪股份有限公司 电池包和电动车辆

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4395007A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117613467A (zh) * 2023-11-28 2024-02-27 江苏前晨汽车科技有限公司 一种电芯ptc加热模块布局的仿真方法

Also Published As

Publication number Publication date
EP4395007A4 (en) 2025-01-08
KR20240052032A (ko) 2024-04-22
US20240243382A1 (en) 2024-07-18
CN216529063U (zh) 2022-05-13
EP4395007A1 (en) 2024-07-03
JP2024539820A (ja) 2024-10-31

Similar Documents

Publication Publication Date Title
WO2023098213A1 (zh) 电池包和电动车辆
JP4231127B2 (ja) 集積電池の温度管理方法及びその装置
CN101894986B (zh) 一种电池组冷却结构
US12322774B2 (en) Battery pack and vehicle
JP5535520B2 (ja) 車両用のバッテリシステム
JPWO2007105612A1 (ja) 充電装置および充放電装置
JP2010272430A (ja) 車両用のバッテリシステム
US20140090812A1 (en) Heat exchanger
CN103123992A (zh) 电池组和以其热电特性控制电池组充放电的方法
CN105051968B (zh) 电池和机动车
US20160111760A1 (en) Power storage module
CN107925138A (zh) 在电池之间具有降低的温度可变性的能量储存装置
CN201758166U (zh) 一种电池组冷却结构
JP2015082353A (ja) 二次電池モジュール及び二次電池パック
CN217009335U (zh) 一种加热膜及电池包
CN105720323A (zh) 温控锂电池组及其温度控制方法
JP2020017361A (ja) 電池温調装置
JPH1064597A (ja) 二次電池電源装置
WO2023000852A1 (zh) 储能装置及其温度调节结构
CN108172927A (zh) 电池组换热系统和电动汽车
KR20140081940A (ko) 전지모듈 어셈블리
CN201355628Y (zh) 电池冷却装置
WO2024139200A1 (zh) 一种保温电池包及热管理方法
US20230187734A1 (en) Thermal battery management system
CN114883687A (zh) 电池模组寿命温控方法及电池模组

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: 22900022

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2024515107

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20247010360

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2022900022

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2022900022

Country of ref document: EP

Effective date: 20240327

NENP Non-entry into the national phase

Ref country code: DE