CN220155700U - Heat dissipation pressure relief device, battery module and battery pack - Google Patents
Heat dissipation pressure relief device, battery module and battery pack Download PDFInfo
- Publication number
- CN220155700U CN220155700U CN202321710887.4U CN202321710887U CN220155700U CN 220155700 U CN220155700 U CN 220155700U CN 202321710887 U CN202321710887 U CN 202321710887U CN 220155700 U CN220155700 U CN 220155700U
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- Prior art keywords
- pressure relief
- plate
- liquid cooling
- heat dissipation
- battery
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 239000000110 cooling liquid Substances 0.000 description 11
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- 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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- Secondary Cells (AREA)
Abstract
The utility model discloses a heat dissipation and pressure relief device, which comprises a liquid cooling plate, wherein a liquid cooling runner is arranged in the liquid cooling plate; the pressure relief plate is provided with a pressure relief channel and an exhaust port, the pressure relief channel is arranged in the pressure relief plate, and the exhaust port is arranged at the top of the pressure relief plate so as to communicate the top of the pressure relief plate with the outside; at least one side of the bottom of the liquid cooling plate is provided with a pressure relief plate; a battery module comprises a heat dissipation and pressure relief device and a battery cell, wherein a first explosion-proof valve is arranged at the bottom of the battery cell; the battery core is arranged at the top of the pressure release plate, and the first explosion-proof valve is aligned above the exhaust port; the heat dissipation and pressure relief device and the battery cell forming module; a battery pack comprises a battery module and a shell, wherein an exhaust channel communicated with the outside is arranged in the shell; the battery module is arranged in the shell, and the pressure release channel is communicated with the exhaust channel; the bottom of the liquid cooling plate is provided with the pressure relief plate, so that the battery cell cooling and the pressure relief of the bottom of the battery cell are simultaneously met, and the pressure relief short circuit problem between adjacent battery cells is effectively prevented.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a heat dissipation and pressure relief device, a battery module and a battery pack.
Background
In the existing battery pack, in order to dissipate heat of the battery core and release pressure of thermal runaway, a liquid cooling plate is generally arranged on the side face of the battery core, a special pressure release channel is arranged in the spraying direction of an explosion-proof valve of the battery core, and the pressure release channel is generally arranged in a pressure release plate which is independently arranged.
Therefore, the liquid cooling plate and the pressure relief plate are arranged separately, when the battery cell is installed, the exhaust port of the pressure relief plate and the explosion-proof valve of the battery cell are required to be aligned and installed, and meanwhile, the liquid cooling plate is required to be adjusted according to the adjustment of the position of the battery cell, so that more time is required for installation and adjustment between the liquid cooling plate and the pressure relief plate, and the improvement of the assembly efficiency is not facilitated.
Disclosure of Invention
In order to overcome at least one defect in the prior art, the utility model provides a heat dissipation and pressure relief device, wherein a pressure relief plate is arranged at the bottom of a liquid cooling plate, so that the cooling of a battery cell and the pressure relief at the bottom of the battery cell are simultaneously satisfied, and the pressure relief and short circuit problem between adjacent battery cells is effectively prevented.
The utility model adopts the technical proposal for solving the problems that:
a heat dissipation and pressure relief device comprising:
a liquid cooling plate, the inside of which is provided with a liquid cooling runner;
the pressure relief plate is provided with a pressure relief channel and an exhaust port, the pressure relief channel is arranged in the pressure relief plate, and the exhaust port is arranged at the top of the pressure relief plate so as to communicate the top of the pressure relief plate with the outside;
at least one side of the bottom of the liquid cooling plate is provided with the pressure relief plate.
Further, the two sides of the bottom of the liquid cooling plate are respectively provided with the pressure release plate.
Further, the number of the exhaust ports is a plurality;
the plurality of exhaust ports are arranged along the length direction of the pressure relief channel.
Further, the liquid cooling flow channel comprises a plurality of sub-flow channels.
The battery module comprises the heat dissipation and pressure relief device and a battery cell, wherein a first explosion-proof valve is arranged at the bottom of the battery cell;
the battery cell is arranged at the top of the pressure release plate, and the first explosion-proof valve is aligned above the exhaust port;
and the heat dissipation and pressure relief device and the battery cell form a module.
Further, the number of the modules is a plurality;
the modules are sequentially arranged, and the heat dissipation and pressure relief devices of two adjacent modules are fixedly connected;
the same ends of the liquid cooling plates 1 of the heat dissipation and pressure relief devices of two adjacent modules 5 are communicated.
A battery pack comprises a battery module and a shell, wherein an exhaust channel communicated with the outside is arranged in the shell;
the battery module is arranged in the shell, and the pressure relief channel is communicated with the exhaust channel.
Further, the battery module is fixedly arranged in the shell.
Further, a second explosion-proof valve is arranged at one end of the exhaust channel communicated with the outside
Further, at least one end of the liquid cooling plate is provided with a joint assembly, and the joint assembly comprises a connector and an external connection pipe;
the connector set up in the tip of liquid cooling board, and with liquid cooling runner intercommunication, be provided with respectively on two opposite sides of connector the takeover.
In summary, the heat dissipation and pressure relief device, the battery module and the battery pack provided by the utility model have the following technical effects:
1) The liquid cooling plate and the pressure release plate are integrally arranged, the battery cell can be assembled in a precise pre-grouping mode with the liquid cooling plate and the pressure release plate simultaneously, rapid assembly among the liquid cooling plate, the pressure release plate and the pressure release plate is convenient, assembly of a subsequent battery module is convenient, and assembly efficiency is improved to a great extent.
2) The liquid cooling plate and the pressure relief plate can be integrally used as a cross beam to support the side wall of the shell so as to strengthen the integral strength of the shell;
3) When the electric core is out of control, the internal substances are directly discharged from the pressure release plate at the bottom, so that the situation that the internal substances spread between adjacent electric cores when the explosion-proof valve is arranged at the top of the electric core is avoided, and the short circuit of the electric core is prevented.
Drawings
Fig. 1 is a schematic diagram of a heat dissipation and pressure relief device according to a first embodiment of the present utility model;
fig. 2 is a cross-sectional view of a heat dissipation and pressure relief device according to a first embodiment of the present utility model;
FIG. 3 is a schematic diagram of a module according to a second embodiment of the utility model;
FIG. 4 is a schematic diagram of a module according to a second embodiment of the utility model;
fig. 5 is a schematic view of a battery pack according to a second embodiment of the utility model.
Wherein the reference numerals have the following meanings:
1. a liquid cooling plate; 11. a liquid cooling runner; 2. a pressure relief plate; 21. a pressure relief channel; 22. an exhaust port; 3. a joint assembly; 31. a connector; 32. an outer connecting pipe; 4. a battery cell; 41. a first explosion-proof valve; 5. a module; 6. a housing.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Example 1
Referring to fig. 1 and 2, the utility model discloses a heat dissipation and pressure relief device, comprising:
a liquid cooling plate 1, in which a liquid cooling flow passage 11 is provided; specifically, the liquid cooling flow path 11 is provided along the longitudinal direction of the liquid cooling plate 1.
In particular, in the present embodiment, in order to allow the liquid cooling flow passage 11 inside the liquid cooling plate 1 to uniformly flow the cooling liquid when the cooling liquid is introduced, the liquid cooling flow passage 11 is divided into a plurality of sub flow passages along the height direction of the liquid cooling plate 1, and the cooling liquid flows into each sub flow passage when the cooling liquid is introduced into the liquid cooling flow passage 11.
The pressure relief plate 2 is provided with a pressure relief channel 21 and an exhaust port 22, the pressure relief channel 21 is arranged in the pressure relief plate 2, and the exhaust port 22 is arranged at the top of the pressure relief plate 2 so as to communicate the top of the pressure relief plate 2 with the outside; at least one side of the bottom of the liquid cooling plate 1 is provided with a pressure release plate 2.
Preferably, the pressure relief plate 2 is symmetrically disposed on two sides of the bottom of the liquid cooling plate 1, and the pressure relief channel 21 is disposed along the length direction of the pressure relief plate 2 (that is, the pressure relief channel 21 and the liquid cooling channel 11 are disposed in parallel), and the liquid cooling plate 1 has an inverted T-shaped structure.
More preferably, the pressure release plate 2 is provided with at least one pressure release channel 21, and in this embodiment, one pressure release channel is preferred; at least one end of the pressure relief channel 21 is an open end.
It should be noted that, the upper exhaust port 22 is at the top of the pressure relief plate 2, and if the pressure relief channels 21 are plural, the exhaust port 22 may be simultaneously connected to the top of the plural pressure relief channels 21.
The number of the exhaust ports 22 is plural; the plurality of exhaust ports 22 are provided along the length direction of the pressure release passage 21.
Further, at least one end of the liquid cooling plate 1 is provided with a joint assembly 3, and the joint assembly 3 comprises a connector 31 and an external connection tube 32; the connector 31 is disposed at an end of the liquid cooling plate 1 and is communicated with the liquid cooling channel 11, and external connection pipes 32 are respectively disposed on two opposite sides of the connector 31.
Preferably, in the present embodiment, the two external connection pipes 32 are symmetrically disposed on two sides of the connecting head 31, and the external connection pipe 32 is located at a center of the side.
When only one end of the liquid cooling plate 1 is provided with the joint assembly 3, the end, far away from the joint assembly 3, of the liquid cooling flow channel 11 is set to be a closed end, and the flowing mode of the cooling liquid is as follows: the cooling liquid is introduced from one of the external connection pipes 32, enters the liquid cooling flow channel 11 of the liquid cooling plate 1, and flows out from the other connection pipe 32.
When the joint assemblies 3 are arranged at both ends of the liquid cooling plate 1, the cooling liquid passes through the external connection tube 32 of the joint assembly 3 at one end of the liquid cooling plate 1, and flows out of the external connection tube 32 at the other end of the liquid cooling plate 1 after passing through the liquid cooling flow channel 11; alternatively, the liquid cooling plate 1 simultaneously introduces the cooling liquid from two external pipes 32 on the same side of the liquid cooling plate 1 along the same direction, and simultaneously introduces the cooling liquid from two external pipes 32 on the other side of the liquid cooling plate 1.
Other embodiments include: only one side of the bottom of the liquid cooling plate 1 is provided with a pressure relief plate 2, and likewise, a pressure relief channel 21 is provided along the length direction of the pressure relief plate 2, that is, the liquid cooling plate 1 is L-shaped.
Example two
On the basis of the first embodiment, referring to fig. 3 and 4, a battery module comprises a heat dissipation and pressure relief device and a battery cell 4, wherein a first explosion-proof valve 41 is arranged at the bottom of the battery cell 4; the battery core 4 is arranged at the top of the pressure release plate 2, and the first explosion-proof valve 41 is aligned above the exhaust port 22; the heat dissipation and pressure relief device and the battery cell 4 form a module 5.
Preferably, in order to improve the electricity storage capacity of the battery module, taking the inverted-T-shaped liquid cooling plate 1 as an example, the same module 5 may include more electric cores 4, and in this embodiment, one pressure release plate 2 is provided with three air outlets 22; it can thus be seen that three cells 4 are placed on one pressure relief plate 2, whereby it can be seen that one module 5 comprises six cells 4; if only one exhaust port is provided on the pressure relief plate 2, one module 5 includes two cells 4, respectively.
Similarly, if three exhaust ports 22 are provided on one pressure release plate 2, for example, an L-shaped liquid cooling plate 1, one module 5 includes three electric cells 4.
Further, the number of modules 5 is plural; the plurality of modules 5 are arranged in sequence, and the heat dissipation and pressure relief devices of two adjacent modules 5 are fixedly connected; the same end of the liquid cooling plate 1 of the heat dissipation and pressure relief device of two adjacent modules 5 is communicated; from this, arrange in proper order of a plurality of modules 5 and set up in order to form the battery module, liquid cooling board 1 sets up integrative with pressure release board 2 in this embodiment, thereby when the battery module is in groups, be connected the electricity core 4 with heat dissipation pressure release device earlier and form a plurality of modules 5, and a plurality of modules 5 are connected through heat dissipation pressure release device's pressure release board 2, thereby can be quick realization battery module's group operation improves group efficiency, in addition, because liquid cooling board 1 is in the same place with pressure release board 1 integration, when carrying out the battery module group, need not additionally arrange liquid cooling board 2 again, can further improve group efficiency.
Preferably, in this embodiment, the two ends of the liquid cooling plate 1 are provided with the joint assemblies 3, for example, a row of external connection pipes 32 at the same end, and two adjacent external connection pipes 32 of two adjacent joint assemblies 3 are communicated, so that two rows of external connection pipes 32 at two ends of the liquid cooling plate 1 form two pipelines, the same end of the two pipelines is simultaneously filled with supercooling liquid, and the other ends of the two pipelines are simultaneously filled with the supercooling liquid; or one end of one pipeline is a closed end, and the other end of the other pipeline close to the closed end is filled with cooling liquid, so that the cooling liquid is discharged from the other ends of the two pipelines.
In particular, in order to improve the rigidity of the whole battery module, two adjacent pressure relief plates 2 of two adjacent heat dissipation and pressure relief devices are connected, preferably, the two pressure relief plates 2 are connected by adopting a welding mode, and the welding mode comprises but is not limited to friction stir welding; the other connection mode also comprises that the bottoms of two adjacent pressure relief plates 2 of two adjacent heat dissipation and pressure relief devices are connected through a connection plate, and two ends of the connection plate are respectively connected with the two pressure relief plates 2 through bolts.
Referring to fig. 5, a battery pack includes a battery module and a case 6, in which an exhaust passage communicating to the outside is provided in the case 6; the battery module is arranged in the housing 6, and the pressure release channel 21 is communicated with the exhaust channel.
Preferably, a mounting position is arranged in the housing 6, the battery module is arranged in the mounting position, and likewise, in order to ensure that the battery module is stably mounted in the housing 6, the pressure release plate 2 is preferably welded with the housing 6; or the end of the liquid cooling plate 1 is welded to the housing 6.
In particular, an exhaust passage communicating to the outside is provided in the housing 6; the battery module is arranged in the shell 6, and the pressure release channel 21 is communicated with the exhaust channel; specifically, an exhaust passage is formed at the bottom of the side wall of the housing 6; when both ends of the pressure relief channel 21 are open ends, exhaust channels are uniformly distributed at both ends of the pressure relief channel 21, and communication holes are formed in the side walls of the exhaust channels; preferably, the open end is welded to and communicates with the communication hole; it will be appreciated that if only one end of the pressure relief passage 21 is open, only one vent passage may be provided.
More preferably, an exhaust passage may be additionally provided on the basis of the above exhaust passage, one end of which communicates to the outside of the housing 6 and the other end of which communicates with the exhaust passage at the open end to join all the exhaust passages at the open end; in addition, the end of the exhaust passage that communicates to the outside of the housing 6 is provided with a second explosion-proof valve.
When thermal runaway occurs in the battery cell 4, gas or other substances in the battery cell enter the pressure relief channel 21 through the gas outlet 22, and finally are discharged out of the housing 6 through the second explosion-proof valve.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. A heat dissipation and pressure relief device, comprising:
a liquid cooling plate (1) provided with a liquid cooling flow passage (11) inside;
the pressure relief plate (2) is provided with a pressure relief channel (21) and an exhaust port (22), the pressure relief channel (21) is arranged in the pressure relief plate (2), and the exhaust port (22) is arranged at the top of the pressure relief plate (2) so as to communicate the top of the pressure relief plate (2) with the outside;
at least one side of the bottom of the liquid cooling plate (1) is provided with the pressure relief plate (2).
2. The heat dissipation and pressure relief device according to claim 1, wherein the pressure relief plates (2) are respectively arranged on two sides of the bottom of the liquid cooling plate (1).
3. A heat dissipating pressure relief device according to claim 1, wherein said number of exhaust ports (22) is a plurality;
the plurality of exhaust ports (22) are arranged along the length direction of the pressure relief channel (21).
4. The heat dissipation and pressure relief device according to claim 1, characterized in that at least one end of the liquid cooling plate (1) is provided with a joint assembly (3), the joint assembly (3) comprises a connector (31) and an external connection tube (32);
the connector (31) is arranged at the end part of the liquid cooling plate (1) and is communicated with the liquid cooling runner (11), and the two opposite side surfaces of the connector (31) are respectively provided with the outer connecting pipes (32).
5. A heat sink and pressure relief device according to claim 1, wherein said liquid cooled flow passage (11) comprises a plurality of sub-flow passages.
6. A battery module, characterized by comprising the heat dissipation and pressure relief device and an electric core (4) according to any one of claims 1-5, wherein a first explosion-proof valve (41) is arranged at the bottom of the electric core (4);
the battery cell (4) is arranged at the top of the pressure relief plate (2), and the first explosion-proof valve (41) is aligned above the exhaust port (22);
the heat dissipation and pressure relief device and the battery cell (4) form a module (5).
7. A battery module according to claim 6, characterized in that the number of modules (5) is a plurality;
the modules (5) are sequentially arranged, and the heat dissipation and pressure relief devices of two adjacent modules (5) are fixedly connected;
the same ends of the liquid cooling plates (1) of the heat dissipation and pressure relief devices of two adjacent modules (5) are communicated.
8. A battery pack, characterized by comprising the battery module according to claim 6 or 7 and a housing (6), wherein an exhaust passage communicating to the outside is provided in the housing (6);
the battery module is arranged in the shell (6), and the pressure relief channel (21) is communicated with the exhaust channel.
9. The battery pack according to claim 8, wherein the battery module is fixedly provided in the housing (6).
10. The battery pack according to claim 8, wherein the end of the exhaust passage communicating with the outside is provided with a second explosion-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321710887.4U CN220155700U (en) | 2023-06-30 | 2023-06-30 | Heat dissipation pressure relief device, battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321710887.4U CN220155700U (en) | 2023-06-30 | 2023-06-30 | Heat dissipation pressure relief device, battery module and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220155700U true CN220155700U (en) | 2023-12-08 |
Family
ID=89007669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321710887.4U Active CN220155700U (en) | 2023-06-30 | 2023-06-30 | Heat dissipation pressure relief device, battery module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220155700U (en) |
-
2023
- 2023-06-30 CN CN202321710887.4U patent/CN220155700U/en active Active
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