CN219476785U - Battery module, battery system and electric automobile - Google Patents
Battery module, battery system and electric automobile Download PDFInfo
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- CN219476785U CN219476785U CN202223332282.4U CN202223332282U CN219476785U CN 219476785 U CN219476785 U CN 219476785U CN 202223332282 U CN202223332282 U CN 202223332282U CN 219476785 U CN219476785 U CN 219476785U
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- battery
- liquid cooling
- module
- battery pack
- cooling plate
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- 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
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Abstract
The utility model belongs to the field of batteries, and particularly relates to a battery module, a battery system and an electric automobile. The battery module comprises a battery pack and a liquid cooling module; the battery pack comprises a plurality of electric cores; the liquid cooling module comprises a liquid cooling plate arranged in the battery pack, and a liquid inlet refrigerant pipeline and a liquid outlet refrigerant pipeline which are connected with the liquid cooling plate. The application can provide a standardized battery module, sets up the liquid cooling module in the group battery and can cool down the electric core, simultaneously, this module structure uses unilateral water-cooling design, promotes the space utilization of module.
Description
Technical Field
The utility model belongs to the field of batteries, and particularly relates to a battery module, a battery system and an electric automobile.
Background
The large cylindrical cell technology can push the energy density, the cost and the safety to a new balance position. On the premise of ensuring the safety of the whole battery pack, the size of the single battery cell is improved, the space utilization rate is improved, and the endurance mileage of the whole battery is improved. Meanwhile, the large-size battery cells are adopted, so that the number of the battery cells in the whole battery pack and the number of corresponding structural parts can be reduced, the weight energy density is improved, the BMS is simplified, and the whole industrial cost of the battery pack is reduced. From the whole car aspect, the performance is improved, the cost is reduced, the safety aspect is further improved, and zero battery accidents are actually realized. But as the cylindrical battery size becomes larger, the heat dissipation problem is first addressed. Because the battery generates heat in the charge and discharge process, the temperature of the battery is raised, the thicker the larger the electric core resistance is, the more heat is generated, and the more difficult the heat dissipation is; meanwhile, the large cylindrical cell module is less capable of forming a standardized structure; there are few large cylindrical cell modules with directional exhaust channels for thermal runaway, which are easy to generate thermal spread and thermal diffusion when the cell is in thermal runaway, thus leading to a larger range of thermal runaway conditions and threatening the safety of drivers and passengers.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a battery module, a battery system and an electric automobile.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a battery module comprises a battery pack and a liquid cooling module; the battery pack comprises a plurality of electric cores; the liquid cooling module comprises a liquid cooling plate 53 arranged in the battery pack 9, and a liquid inlet cooling agent pipeline 51 and a liquid outlet cooling agent pipeline 52 which are connected with the liquid cooling plate.
The liquid inlet refrigerant pipeline and the liquid outlet refrigerant pipeline are arranged on the same side of the battery pack.
The battery pack consists of a plurality of longitudinal battery packs; preferably, the cells in the longitudinal battery pack are arranged in a staggered manner, preferably, 12x11 staggered manner is adopted, and 132 cells are included; preferably, the current channel is S-shaped.
The liquid cooling plates are composed of a plurality of serpentine liquid cooling plates, each liquid cooling plate is preferably arranged between adjacent longitudinal battery packs, and each liquid cooling plate is preferably provided with a liquid cooling plate inlet and a liquid cooling plate outlet; the inlet of the liquid cooling plate is communicated with the liquid inlet refrigerant pipeline; the outlet of the liquid cooling plate is communicated with the liquid outlet refrigerant pipeline.
The battery module further comprises a box body, wherein the box body comprises a metal lower bracket, an insulating sheet and nonmetal side plates, the metal lower bracket is connected in a surrounding mode, the insulating sheet is arranged above the metal lower bracket, and the nonmetal side plates are arranged on two sides of the metal lower bracket; preferably, a plurality of connecting holes are formed in the metal lower bracket; preferably, pouring sealant is filled between the battery cells and the box body.
And the metal lower bracket and the insulating sheet are provided with heat dissipation holes.
The heat dissipation holes are in one-to-one correspondence with the positions of the battery cells.
The battery module further comprises a welding module arranged above the battery pack, wherein the welding module comprises a welding bracket connected with the box body, a bus bar arranged in the welding bracket and an FPC assembly connected with the bus bar; the busbar is connected with the battery pack; preferably, the busbar comprises a series negative aluminum row connected with the negative electrode of the battery cell in the battery pack, a series positive aluminum row connected with the positive electrode of the battery cell in the battery pack, a total negative aluminum row connected with the series negative aluminum row and a total positive aluminum row connected with the series positive aluminum row.
The application also comprises a battery system which comprises a plurality of battery modules, and preferably, the total negative aluminum rows and the total positive aluminum rows between the adjacent battery modules are connected to form a current channel; preferably, the battery system includes a plurality of battery modules.
The application also comprises an electric automobile comprising the battery system.
Compared with the prior art, the utility model has the beneficial effects that:
this application can provide a standardized battery module (hereinafter referred to as the module), sets up the liquid cooling module in the group battery and can cool down to the electric core, simultaneously, this module structure uses unilateral water-cooling design, promotes the space utilization of module. As the preference, this application can be to the battery system product of different motorcycle types, only need carry out after establishing ties between the module fixed place in the battery package box can form required battery system, design cost reduces, degree of standardization is high. As the preference, when the module of the application is out of control, high-temperature high-pressure gas is directionally discharged through the heat dissipation holes, so that the occurrence of heat diffusion can be effectively prevented, the invasion of hot air into the passenger cabin is avoided, and the safety of the passenger cabin is ensured.
Drawings
Fig. 1 is an exploded view of a battery module integrated with a liquid cooling pipe according to an embodiment of the present utility model;
FIG. 2 is a top view of a welding module according to an embodiment of the utility model;
FIG. 3 is a schematic diagram illustrating connection between a battery pack and a liquid cooling module according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a battery metal subframe structure according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of the electrical connection and current flow of a module according to an embodiment of the present utility model;
fig. 6 is a schematic diagram of a battery system structure and current direction according to an embodiment of the utility model.
Detailed Description
The present utility model will be described in further detail below with reference to the drawings and preferred embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.
FIGS. 1-5 illustrate a battery module including a battery pack and a liquid cooling module; the battery pack 9 includes a plurality of battery cells 91; the liquid cooling module comprises a liquid cooling plate arranged in the battery pack and a liquid cooling agent pipeline 54 connected with the liquid cooling plate; the liquid cooling agent pipeline comprises a liquid inlet cooling agent pipeline and a liquid outlet cooling agent pipeline, and the liquid cooling agent pipeline 54 connects the liquid cooling flow channels in the liquid cooling plate in series. The liquid inlet refrigerant pipeline and the liquid outlet refrigerant pipeline are arranged on the same side of the battery pack.
The battery pack consists of a plurality of longitudinal battery packs; in the embodiment of the application, the cells in the longitudinal battery pack are arranged in a staggered manner, specifically in a grouping manner of 4-to-33 strings, and the cells are arranged in a staggered manner of 12x11, including 132 cells. The current channel of the battery pack can be S-shaped, and the design can improve the volume utilization rate of the battery.
The liquid cooling plates are composed of a plurality of serpentine liquid cooling plates, each liquid cooling plate is preferably arranged between adjacent longitudinal battery packs, and each liquid cooling plate is preferably provided with a liquid cooling plate inlet and a liquid cooling plate outlet; the inlet of the liquid cooling plate is communicated with the liquid inlet refrigerant pipeline; the outlet of the liquid cooling plate is communicated with the liquid outlet refrigerant pipeline. The liquid inlet refrigerant pipeline 51 and the liquid outlet refrigerant pipeline 52 are distributed up and down; the liquid cooling plates 53 are disposed between the longitudinal battery packs and are tightly adhered to the battery cells by the heat conductive adhesive, and in this embodiment, six serpentine liquid cooling plates are disposed in total, and the plate pitches of the serpentine liquid cooling plates are the same.
The battery module further comprises a box body provided with an opening, wherein the box body is formed by encircling a metal lower bracket 7, an insulating sheet 8 arranged above the metal lower bracket and nonmetal side plates 6 arranged on two sides of the metal lower bracket; the metal lower bracket 7 can improve the structural strength of the module; the nonmetallic side plates 6 are arranged on two sides of the module and are tightly adhered with the metallic lower bracket 7 to form a module frame, so that the later-stage module pouring sealant is prevented from overflowing from the side seams; the nonmetallic side plate has good insulating property. And pouring sealant 4 is filled between the electric cores and the box body. Pouring sealant 4 is used for pouring sealant into the module, and the impact resistance, vibration resistance and flame retardance of the inside of the poured module are greatly improved; the insulation property inside the module can be improved after encapsulation, the direct exposure of the battery cell 91 is avoided, the dustproof and dampproof performances are improved, the type and the material of the pouring sealant 4 are not limited, and the basic requirements of insulation pressure resistance, low heat conductivity, lower density and higher flame retardant temperature are met. After primary glue filling, foam discharging and secondary glue filling are needed, the air bubbles covered by the glue in the process of glue filling in the module are discharged by negative pressure, and the residual cavity of the module is filled with pouring sealant 4; if only one glue filling is performed, after the glue is solidified and formed, a hollow part may exist in the cavity, so that the structural strength is affected, and the heat conduction in the module is also possibly uneven.
The battery module further comprises a welding module arranged above the battery pack. The welding template comprises a welding bracket 3 connected with the box body, a busbar 2 arranged in the welding bracket and an FPC assembly 1 connected with the busbar; the bus bar is connected with the battery pack. The FPC assembly 1 consists of two FPC strips, the FPC strips are arranged at the top end of the battery module integrated with the liquid cooling pipeline and are connected with the busbar 2 by laser welding, and the two FPCs are provided with interfaces; the bending at the interface is vertical to the plane where the FPC strip is positioned, and the interface is tightly adhered to the nonmetal side plate 6.
The busbar comprises a series negative aluminum row 23 connected with the negative electrode of the battery cell in the battery pack, a series positive aluminum row 21 connected with the positive electrode of the battery cell in the battery pack, a total negative aluminum row 24 connected with the series negative aluminum row and a total positive aluminum row 22 connected with the series positive aluminum row, the total positive aluminum row 22 and the series positive aluminum row 21 are respectively arranged on two sides of the busbar, and the busbar is connected with the battery cell by laser welding.
The metal lower bracket is provided with a plurality of connecting holes 72. The metal lower bracket and the insulating sheet are provided with radiating holes 71. The heat dissipation holes are in one-to-one correspondence with the positions of the battery cells. The heat dissipation holes 71 can play a role in dissipating heat of the battery during normal use, and can serve as a directional exhaust passage for directional exhaust of high-temperature and high-pressure gas during thermal runaway.
The utility model also provides a battery system which comprises a plurality of battery modules, preferably a plurality of battery modules, such as 2, 4, 6, 8 and the like, and the number of the specific battery modules can be determined according to the needs of a person skilled in the art. The connection hole 72 is used for installing a battery module, and is fixed in the battery box body to form a battery system; referring to fig. 6, in this embodiment, a battery system composed of six battery modules (hereinafter referred to as modules) is provided, and a total negative aluminum row and a total positive aluminum row between adjacent battery modules are connected to form a current channel; the battery modules in the battery system are orderly arranged to form a matrix, the liquid coolant pipelines 54 are mutually communicated outside the matrix of the modules, the modules are connected in series to form a loop, and the anode and the cathode of the battery system are positioned on the same side.
The battery system provided by the utility model can be used for a power source of an electric automobile.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. The battery module is characterized by comprising a battery pack and a liquid cooling module; the battery pack comprises a plurality of electric cores; the liquid cooling module comprises a liquid cooling plate arranged in the battery pack, and a liquid inlet refrigerant pipeline and a liquid outlet refrigerant pipeline which are connected with the liquid cooling plate.
2. The battery module of claim 1, wherein the inlet coolant line and the outlet coolant line are disposed on the same side of the battery pack.
3. The battery module according to claim 1, wherein the battery pack is composed of a plurality of longitudinal battery packs; the battery cells in the longitudinal battery pack are arranged in a staggered manner, and the battery cells are arranged in a staggered manner by 12x11, including 132 battery cells; the current channel of the battery module is S-shaped.
4. The battery module according to claim 1, wherein the liquid cooling plate is composed of a plurality of serpentine liquid cooling plates, each liquid cooling plate is arranged between adjacent longitudinal battery packs, and each liquid cooling plate is provided with a liquid cooling plate inlet and a liquid cooling plate outlet; the inlet of the liquid cooling plate is communicated with the liquid inlet refrigerant pipeline; the outlet of the liquid cooling plate is communicated with the liquid outlet refrigerant pipeline.
5. The battery module according to claim 1, further comprising a case body including a metal subframe peripherally connected thereto, an insulating sheet disposed above the metal subframe, and non-metal side plates disposed on both sides of the metal subframe; a plurality of connecting holes are formed in the metal lower bracket; pouring sealant is filled between the electric cores and the box body.
6. The battery module according to claim 5, wherein the metal lower bracket and the insulating sheet are provided with heat dissipation holes.
7. The battery module of claim 6, wherein the heat dissipation holes are in one-to-one correspondence with the positions of the electric cells.
8. The battery module of claim 5, further comprising a welding module disposed above the battery pack, the welding module comprising a welding bracket coupled to the case, a bus bar disposed within the welding bracket, and an FPC assembly coupled to the bus bar; the busbar is connected with the battery pack; the busbar comprises a series negative aluminum row connected with the negative electrode of the battery cell in the battery pack, a series positive aluminum row connected with the positive electrode of the battery cell in the battery pack, a total negative aluminum row connected with the series negative aluminum row and a total positive aluminum row connected with the series positive aluminum row.
9. A battery system comprising a plurality of battery modules according to any one of claims 1 to 8; the total negative aluminum rows and the total positive aluminum rows between the adjacent battery modules are connected to form a current channel; the battery system comprises a plurality of battery modules.
10. An electric vehicle comprising the battery system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223332282.4U CN219476785U (en) | 2022-12-13 | 2022-12-13 | Battery module, battery system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223332282.4U CN219476785U (en) | 2022-12-13 | 2022-12-13 | Battery module, battery system and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219476785U true CN219476785U (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223332282.4U Active CN219476785U (en) | 2022-12-13 | 2022-12-13 | Battery module, battery system and electric automobile |
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| CN (1) | CN219476785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117335052A (en) * | 2023-12-01 | 2024-01-02 | 安徽国麒科技有限公司 | Battery Bao Re out-of-control protection system and method based on cell data analysis |
-
2022
- 2022-12-13 CN CN202223332282.4U patent/CN219476785U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117335052A (en) * | 2023-12-01 | 2024-01-02 | 安徽国麒科技有限公司 | Battery Bao Re out-of-control protection system and method based on cell data analysis |
| CN117335052B (en) * | 2023-12-01 | 2024-02-13 | 安徽国麒科技有限公司 | Battery Bao Re out-of-control protection system and method based on cell data analysis |
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