CN215527825U - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
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- CN215527825U CN215527825U CN202121337315.7U CN202121337315U CN215527825U CN 215527825 U CN215527825 U CN 215527825U CN 202121337315 U CN202121337315 U CN 202121337315U CN 215527825 U CN215527825 U CN 215527825U
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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 technical field of batteries, and discloses a battery module and a battery pack, wherein when the battery module is out of control due to heat, hot air generated at one end of the battery module close to a second end plate directly passes through air holes to be discharged out of the battery module, hot air generated at one end of the battery module far away from the second end plate can enter a hollow structure through an air inlet of an exhaust passage and then flow out of an air outlet of the exhaust passage, and finally is discharged out of the battery module through the air holes in the second end plate, so that the directional exhaust of the battery module is realized, and the influence of the battery module on other battery modules in the battery pack is avoided; the battery module of the battery pack can realize directional exhaust of the battery module; when a set of battery module in the battery package takes place thermal runaway, can reduce the influence to other battery modules through the directional exhaust of battery module, promoted the security of battery package.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery module and a battery pack.
Background
Along with the development of new energy automobiles, the demand for power batteries is continuously increased, and meanwhile, the performance requirements for the power batteries are also continuously increased, generally, a power battery pack is composed of a plurality of battery modules, the battery modules are composed of a plurality of battery cells, the battery cells in the battery modules generally adopt square-shell battery cells or soft-package battery cells, and because the outside of the soft-package battery cells are coated by aluminum-plastic films, compared with the square-shell battery cells (aluminum shells or steel shells), the soft-package battery cells are weaker in structure, and therefore the battery modules need to be protected by an outer frame of the battery modules; in the use of battery package, the battery core in the battery module can take place thermal runaway because of circumstances such as extrusion, short circuit, can cause the battery package even new energy automobile to take place spontaneous combustion.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery module and a battery pack so as to improve the safety of the battery module and the battery pack.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a battery module, which comprises a module outer frame and a battery cell assembly, wherein the battery cell assembly is accommodated in the module outer frame, and the module outer frame comprises:
a base plate;
a first end plate;
the second end plate is spaced from and arranged in parallel with the first end plate, the first end plate and the second end plate are vertically arranged on the bottom plate, and a gap is reserved between the electric core assembly and the first end plate and between the electric core assembly and the second end plate; the second end plate is provided with a plurality of air holes, and hot air generated by the cell assembly can be discharged out of the module outer frame through the air holes;
the two groups of side plates are arranged at intervals, are vertically arranged on the bottom plate, and are respectively connected with one end of the first end plate and one end of the second end plate at two ends; an exhaust passage is arranged in the side plate, an air inlet and an air outlet of the exhaust passage are both arranged on one side of the side plate close to the electric core assembly, the air inlet of the exhaust passage is positioned at one end of the side plate far away from the second end plate, and the air outlet of the exhaust passage is positioned at one end of the side plate close to the second end plate; and
and the upper cover plate covers the two groups of side plates, the first end plate and the second end plate.
Preferably, the battery core assembly comprises two sets of battery core main bodies, the two sets of battery core main bodies are arranged along the length direction of the first end plate in sequence, each battery core main body comprises a plurality of sets of battery cores, and the plurality of sets of battery cores are arranged along the length direction of the first end plate in a stacking mode.
Preferably, the battery module further includes:
the middle plate is arranged in the module outer frame, the middle plate and the side plates are arranged in parallel, two ends of the middle plate are respectively abutted to the first end plate and the second end plate, and the middle plate is positioned between the two groups of battery cell main bodies.
Preferably, the middle plate has a hollow structure, and a reinforcing structure is arranged in the hollow structure.
Preferably, the reinforcing structure is a plurality of reinforcing plates, and the plurality of reinforcing plates are arranged at intervals along the height direction of the middle plate and connected with the inner wall of the middle plate.
Preferably, a heat insulation buffer is arranged between the battery cell main body and the side plate.
Preferably, the heat insulation buffer is made of a heat insulation buffer material.
Preferably, the air inlet of the air vent and the air outlet of the air vent are arranged in a staggered manner.
Preferably, the first end plate, the second end plate and the two groups of side plates are welded with the bottom plate.
The utility model also provides a battery pack which comprises a shell, a BMS controller and at least two groups of battery modules, wherein the BMS controller and the battery modules are arranged in the shell.
The utility model has the beneficial effects that:
the battery module comprises a module outer frame and a battery core assembly, wherein the battery core assembly is accommodated in the module outer frame, the module outer frame comprises a bottom plate, a first end plate, a second end plate, two groups of side plates and an upper cover plate, the second end plate and the first end plate are arranged in a spaced and parallel mode, the first end plate and the second end plate are vertically arranged on the bottom plate, and a gap is formed between the battery core assembly and the first end plate and between the battery core assembly and the second end plate; the second end plate is provided with a plurality of air holes, and hot air generated by the electric core assembly can be exhausted out of the outer frame of the module through the air holes; the two groups of side plates are arranged at intervals, the two groups of side plates are vertically arranged on the bottom plate, and two ends of each side plate are respectively connected with one end of the first end plate and one end of the second end plate; an exhaust passage is arranged in the side plate, an air inlet and an air outlet of the exhaust passage are both arranged on one side of the side plate close to the electric core assembly, the air inlet of the exhaust passage is positioned at one end of the side plate far away from the second end plate, and the air outlet of the exhaust passage is positioned at one end of the side plate close to the second end plate; the upper cover plate is covered on the two groups of side plates, the first end plate and the second end plate; when the electric core subassembly takes place the thermal runaway, the steam that the one end of electric core subassembly near the second end plate produced directly passes through bleeder vent discharge battery module, the steam that the one end of keeping away from the second end plate of electric core subassembly produced can get into hollow structure through exhaust passage's air inlet, again by exhaust passage's gas outlet outflow, at last from the bleeder vent discharge battery module on the second end plate, realized battery module's directional exhaust, avoided the influence of other battery modules in this battery module to the battery package.
The battery pack provided by the utility model comprises a shell, a BMS controller and at least two groups of battery modules, wherein the BMS controller and the battery modules are arranged in the shell, and the battery modules of the battery pack can realize directional exhaust of the battery modules; when a set of battery module in the battery package takes place thermal runaway, can reduce the influence to other battery modules through the directional exhaust of battery module, promoted the security of battery package.
Drawings
Fig. 1 is a schematic view of a battery module according to the present invention;
fig. 2 is an exploded view of a battery module according to the present invention;
fig. 3 is a schematic view of a side panel according to the present invention.
In the figure:
1. a module outer frame; 2. an electrical core assembly; 3. a middle plate; 4. a heat insulating buffer;
11. a base plate; 12. a first end plate; 13. a second end plate; 14. a side plate; 15. an upper cover plate; 21. a cell main body;
131. air holes are formed; 141. an exhaust passage.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a battery pack, which comprises a shell, a BMS controller and at least two groups of battery modules, wherein the BMS controller and the battery modules are arranged in the shell, and the battery modules of the battery pack can realize directional exhaust of the battery modules; when a set of battery module in the battery package takes place thermal runaway, can reduce the influence to other battery modules through the directional exhaust of battery module, this battery package's security is higher.
As shown in fig. 1-3, the battery module includes a module outer frame 1 and a cell assembly 2, the cell assembly 2 is accommodated in the module outer frame 1, the module outer frame 1 includes a bottom plate 11, a first end plate 12, a second end plate 13, two sets of side plates 14 and an upper cover plate 15, the second end plate 13 is spaced from and parallel to the first end plate 12, the first end plate 12 and the second end plate 13 are vertically disposed on the bottom plate 11, and a space is provided between the cell assembly 2 and the first end plate 12 and the second end plate 13; the second end plate 13 is provided with a plurality of air holes 131, and hot air generated by the electric core assembly 2 can be exhausted out of the module outer frame 1 through the air holes 131; the two groups of side plates 14 are arranged at intervals, the two groups of side plates 14 are vertically arranged on the bottom plate 11, and two ends of each side plate 14 are respectively connected with one end of the first end plate 12 and one end of the second end plate 13; an air exhaust channel 141 is arranged in the side plate 14, an air inlet and an air outlet of the air exhaust channel 141 are both arranged on one side of the side plate 14 close to the electric core assembly 2, the air inlet of the air exhaust channel 141 is positioned at one end of the side plate 14 far away from the second end plate 13, and the air outlet of the air exhaust channel 141 is positioned at one end of the side plate 14 close to the second end plate 13; the upper cover plate 15 covers the two sets of side plates 14, the first end plate 12 and the second end plate 13.
When the electric core assembly 2 is out of control due to heat, hot air generated at one end of the electric core assembly 2 close to the second end plate 13 directly passes through the air holes 131 to be discharged out of the battery module, hot air generated at one end of the electric core assembly 2 far away from the second end plate 13 can enter the hollow structure through the air inlet of the exhaust passage 141 and then flow out of the air outlet of the exhaust passage 141, and finally the battery module is discharged out of the battery module through the air holes 131 on the second end plate 13, so that the directional exhaust of the battery module is realized, and the influence of the battery module on other battery modules in the battery pack is avoided; in addition, the side plates 14 can absorb a portion of heat while the hot air flows in the exhaust duct 141 to lower the temperature of the hot air discharged from the battery module.
Specifically, the battery cell assembly 2 includes two sets of battery cell main bodies 21, the two sets of battery cell main bodies 21 are sequentially arranged along the length direction of the first end plate 12, the battery cell main body 21 includes multiple sets of battery cells, and the multiple sets of battery cells are stacked along the length direction of the first end plate 12.
As shown in fig. 1 and fig. 2, the battery module further includes a middle plate 3, the middle plate 3 is disposed in the module outer frame 1, the middle plate 3 is parallel to the side plates 14, two ends of the middle plate 3 abut against the first end plate 12 and the second end plate 13 respectively, and the middle plate 3 is located between the two sets of cell main bodies 21, the middle plate 3 can greatly enhance the extrusion strength in the width direction of the battery module (i.e., the length direction of the side plates 14), so as to prevent the deformation of the battery module outer frame 1 when the battery module is extruded in the width direction, and increase the safety of the battery module.
In order to reduce the weight of the battery module and ensure the strength of the module outer frame 1, the middle plate 3 in the embodiment has a hollow structure, and a reinforcing structure is arranged in the hollow structure; preferably, the reinforcing structure is a plurality of reinforcing plates which are arranged at intervals along the height direction of the middle plate 3 and connected with the inner wall of the middle plate 3; similarly, the side plates 14, the first end plate 12 and the second end plate 13 all have the same hollow structure as the middle plate 3, and a reinforcing structure is also arranged in the middle structure.
As shown in fig. 2, a heat insulation buffer 4 is arranged between the cell main body 21 and the side plate 14, the heat insulation buffer 4 is made of a heat insulation buffer material, and the heat insulation buffer 4 can prevent the cell main body 21 from moving freely in the module outer frame 1, so as to play a certain fixing role; in addition, when electric core subassembly 2 takes place thermal runaway, this thermal-insulated bolster 4 can also be with electric core subassembly 2 heat isolated in battery module to prevent to produce the influence to other battery modules in the battery package.
In order to reduce the temperature of the hot gas that electric core subassembly 2 produced, the setting of staggering of air inlet and the gas outlet of bleeder vent 131 of this embodiment to increase the length of bleeder vent 131, thereby increase the length of exhaust route, and then reduce the temperature of discharge hot gas, avoided other battery module to produce the influence in the battery package.
The first end plate 12, the second end plate 13 and the two sets of side plates 14 in this embodiment are welded to the bottom plate 11, and it is conceivable that the whole structure of the module outer frame 1 is welded.
Alternatively, the module outer frame 1 and the middle plate 3 are both made of aluminum alloy materials.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a battery module, its characterized in that, includes module frame (1) and electric core subassembly (2), electric core subassembly (2) holding in module frame (1), module frame (1) includes:
a base plate (11);
a first end plate (12);
the second end plate (13) is spaced from and arranged in parallel with the first end plate (12), the first end plate (12) and the second end plate (13) are vertically arranged on the bottom plate (11), and a gap is reserved between the electric core assembly (2) and the first end plate (12) and the second end plate (13); a plurality of air holes (131) are formed in the second end plate (13), and hot air generated by the electric core assembly (2) can be discharged out of the module outer frame (1) through the air holes (131);
the two groups of side plates (14) are arranged at intervals, the two groups of side plates (14) are vertically arranged on the bottom plate (11), and two ends of each side plate (14) are respectively connected with one end of the first end plate (12) and one end of the second end plate (13); an air exhaust channel (141) is arranged in the side plate (14), an air inlet and an air outlet of the air exhaust channel (141) are both arranged on one side, close to the electric core assembly (2), of the side plate (14), an air inlet of the air exhaust channel (141) is located at one end, far away from the second end plate (13), of the side plate (14), and an air outlet of the air exhaust channel (141) is located at one end, close to the second end plate (13), of the side plate (14); and
and the upper cover plate (15) is covered on the two groups of side plates (14), the first end plate (12) and the second end plate (13).
2. The battery module according to claim 1, wherein the cell assembly (2) comprises two sets of cell main bodies (21), the two sets of cell main bodies (21) are sequentially arranged along the length direction of the first end plate (12), the cell main body (21) comprises a plurality of groups of cells, and the plurality of groups of cells are stacked along the length direction of the first end plate (12).
3. The battery module according to claim 2, further comprising:
the middle plate (3) is arranged in the module outer frame (1), the middle plate (3) is parallel to the side plates (14), two ends of the middle plate (3) are respectively abutted to the first end plate (12) and the second end plate (13), and the middle plate (3) is located between the cell main bodies (21).
4. The battery module according to claim 3, wherein the intermediate plate (3) has a hollow structure in which a reinforcing structure is provided.
5. The battery module according to claim 4, wherein the reinforcing structure is a plurality of reinforcing plates that are arranged at intervals in the height direction of the middle plate (3) and are connected to the inner wall of the middle plate (3).
6. The battery module according to claim 2, wherein a heat insulating buffer (4) is provided between the cell main body (21) and the side plate (14).
7. The battery module according to claim 6, wherein the heat-insulating buffer (4) is made of a heat-insulating buffer material.
8. The battery module according to any one of claims 1 to 7, wherein the air inlets of the air vents (131) are arranged to be staggered from the air outlets of the air vents (131).
9. The battery module according to any one of claims 1 to 7, wherein the first end plate (12), the second end plate (13) and two sets of side plates (14) are welded to the bottom plate (11).
10. A battery pack comprising a housing, a BMS controller, and at least two sets of the battery modules according to any one of claims 1 to 9, the BMS controller and the battery modules being disposed in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337315.7U CN215527825U (en) | 2021-06-16 | 2021-06-16 | Battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337315.7U CN215527825U (en) | 2021-06-16 | 2021-06-16 | Battery module and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN215527825U true CN215527825U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121337315.7U Active CN215527825U (en) | 2021-06-16 | 2021-06-16 | Battery module and battery pack |
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| CN (1) | CN215527825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425352A (en) * | 2022-06-02 | 2022-12-02 | 远景动力技术(江苏)有限公司 | Battery module and electronic device |
-
2021
- 2021-06-16 CN CN202121337315.7U patent/CN215527825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425352A (en) * | 2022-06-02 | 2022-12-02 | 远景动力技术(江苏)有限公司 | Battery module and electronic device |
| CN115425352B (en) * | 2022-06-02 | 2024-04-23 | 株式会社Aesc日本 | Battery module and electronic device |
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