CN217822987U

CN217822987U - Battery module with heat dissipation structure

Info

Publication number: CN217822987U
Application number: CN202221846829.XU
Authority: CN
Inventors: 张古博
Original assignee: STL Technology Co Ltd
Current assignee: STL Technology Co Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-15
Anticipated expiration: 2032-07-18

Abstract

The utility model relates to a battery module with heat dissipation structure, including a plurality of battery cores, battery mount and heat dissipation structure. The heat dissipation structure comprises a plurality of heat containers, at least one heat conducting plate and at least one heat collector. Each heat container is interposed in a space maintained between a plurality of adjacent battery cells. The heat conducting plate is sandwiched in the space between the heat container and the battery cell. The heat collectors are arranged at two ends of the heat conducting plate. When the battery module operates, the heat container is used for storing heat generated by charging and discharging of the peripheral battery core and conducting the heat to the heat collector through the heat conducting plate, and the heat can be collected to the heat collector. The utility model discloses a produced heat when battery core charge-discharge is taken away to the heat dissipation structure, will avoid the battery core to accumulate the heat, can reduce the risk that the battery core damaged.

Description

Battery module with heat dissipation structure

Technical Field

The present invention relates to a battery module, and more particularly to a battery module with a heat dissipation structure.

Background

In recent years, electric vehicles are increasingly favored due to the demand for environmental protection and carbon reduction. Many vehicle manufacturers are continuously entering the development of electric vehicles in order to gain business opportunities in the electric vehicle market. The power source of the electric vehicle is a battery, such as a lithium battery. In order to increase the endurance of an electric vehicle, a battery module having a considerable number of battery cells is generally provided on the electric vehicle so as to provide sufficient power for the electric vehicle.

Referring to fig. 1, 2 and 3, a top sectional view, a front sectional view and a side sectional view of a battery module in the prior art are shown. As shown in fig. 1, 2 and 3, the battery module 100 includes a metal housing 11, a plurality of battery cells 12, a first fixing frame 131 and a second fixing frame 132. The battery cells 12 are accommodated and fixed between the first fixing frame 131 and the second fixing frame 132, and the first fixing frame 131 and the second fixing frame 132 in which the battery cells 12 are disposed in the metal housing 11, so that the battery cells 12, the first fixing frame 131 and the second fixing frame 132 are protected by the metal housing 11.

The battery cells 12 of the battery module 100 generate heat and increase the temperature during charging and discharging. In order to dissipate heat generated by charging and discharging of battery cell 12, air blowing fan 151 and air suction fan 153 are generally provided on both sides of metal case 11. The first holder 131 and the second holder 132 accommodating the battery cells 12 are placed between the blowing fan 151 and the suction fan 153. The blowing fan 151 blows cool air from the outside toward the position of the internal battery cell 12 of the case 11, and the blown cool air passes through the heat-generating battery cell 12 and becomes hot air. Then, the hot air is extracted by the extraction fan 153 to be discharged to the outside, and the temperature of the battery cell 12 which generates heat by charging and discharging can be lowered by blowing the air by the blowing fan 151 and extracting the hot air by the extraction fan 153.

Since the plurality of battery cells 12 are horizontally arranged at the same height between the first and

second holders

131 and 132, most of the wind force of the cool air blown by the blowing fan 151 is blocked by the battery cells 12 in the front row near the blowing fan 151, which causes a high flow resistance, and only a small amount of wind force can flow to the battery cells 12 in the rear row through the gaps between the battery cells 12 in the front row. In addition, in order to arrange a larger number of battery cells 12 in the limited space range of the first fixing frame 131 and the second fixing frame 132, the gaps between the arranged battery cells 12 are usually very small, such as 2mm, which also causes a situation of high flow resistance, resulting in very poor air circulation efficiency of the cold air between the battery cells 12. Accordingly, the cool air blown by the blowing fan 151 tends to flow only at a place with low flow resistance, for example, the cool air tends to blow toward the battery cells 12 near the front row of the blowing fan 151 and the outer sides of the first and

second holders

131 and 132, and the battery cells 12 arranged at the inner side region of the battery module 100 do not easily receive the blow of the cool air, resulting in that the battery cells 12 are easily at a high temperature when being charged and discharged.

In the conventional battery module 100, the

fans

151 and 153 blow air to the battery cells 12, which causes poor air flow efficiency, and thus the heat dissipation effect of the battery cells 12 in the inner region of the battery module 100 is not preferable.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem mentioned above, the utility model provides a battery module with heat dissipation structure, including metal casing, battery mount, a plurality of battery core and an at least heat dissipation structure. The battery fixing frame is used for accommodating and fixing the battery core and is arranged in the metal shell. The heat dissipation structure comprises a plurality of heat containers, at least one heat conducting plate and at least one heat collector. Each of the heat containers is interposed in a space maintained between a plurality of adjacent battery cells. The heat conductive plate is sandwiched in a space between the heat container and the battery cell. The heat collectors are disposed on both ends of the heat conductive plate and connected to the metal case. When the battery module operates, the heat container is used for storing heat generated by charging and discharging of the peripheral battery core and conducting the heat to the heat collector through the heat conducting plate so as to collect the heat to the heat collector; the heat collected on the heat collector can be further conducted to the metal shell, and finally, the heat on the metal shell is taken away through the convection of the outside air. Therefore, the heat generated by the charging and discharging of the battery core can be taken away through the heat dissipation structure, the battery core can be prevented from being in a higher temperature state during the charging and discharging operation, and the risk of the battery core being damaged in advance is reduced.

To achieve the above object, the present invention provides a battery module having a heat dissipation structure, including: a plurality of battery cells; the battery fixing frame is used for accommodating and fixing a plurality of battery cores; the heat dissipation structure comprises a plurality of heat containers, a plurality of heat pipes and a plurality of heat pipes, wherein each heat container is inserted into a gap kept between a plurality of adjacent battery cores and is used for storing heat generated by charging and discharging of the peripheral battery cores; at least a heat conductive plate sandwiched in a gap between the thermal container and the battery cell; and at least one heat collector connected to the heat conducting plate, wherein the heat stored in the heat container is conducted to the heat collector through the heat conducting plate.

Preferably, the heat conducting plate is a serrated plate body.

Preferably, the heat conductive plate is made of a metal aluminum plate in a flat plate form through a punching or bending process.

Preferably, the plate body of the heat conducting plate includes a plurality of recesses, and each heat container is accommodated in a corresponding recess.

Preferably, the space in the recess of the heat conducting plate is filled with the accommodated thermal container.

Preferably, the thermal container is a metal cylinder or a metal heat pipe body in the form of a square, diamond, triangle or circle, respectively.

Preferably, the heat collector is disposed on the bent structure at both ends of the heat conductive plate.

Preferably, the heat collector is a metal cylinder or a heat radiating fin.

Preferably, the battery module further includes a metal casing, the battery holder and the heat dissipation structure are disposed inside the metal casing, and the heat conducting plate of the heat dissipation structure is connected to the metal casing through the heat collector.

Preferably, the heat container is attached to the concave portion of the heat conducting plate by an adhesive, and the heat collector is attached to the bent structures at the two ends of the heat conducting plate by the adhesive to form the heat dissipating assembly.

The utility model discloses a produced heat when battery core charge-discharge is taken away to the heat dissipation structure, will avoid the battery core to accumulate the heat, can reduce the risk that the battery core damaged.

Drawings

Fig. 1 is a top sectional view of a conventional battery module.

Fig. 2 is a front sectional view of a conventional battery module.

Fig. 3 is a side sectional view of a conventional battery module.

Fig. 4 is a top perspective view of an embodiment of a battery module with a heat dissipation structure provided in the present invention.

Fig. 5 is an elevational cross-sectional view of linebase:Sub>A-base:Sub>A' of the embodiment of fig. 4.

Fig. 6 is a schematic view of the manufacturing process of the serrated heat conduction plate of the present invention.

Fig. 7 is an assembly schematic view of the heat container, the heat collector and the heat conducting plate of the heat dissipation structure of the present invention.

Fig. 8 is a front sectional view of still another embodiment of a battery module having a heat dissipation structure according to the present invention.

Description of reference numerals: 100-a battery module; 11-a metal housing; 12-a battery cell; 131-a first mount; 132-a second mount; 151-a blower fan; 153-suction fan; 300-a battery module; 31-a metal housing; 32-a battery cell; 33-a battery holder; 331-a first mount; 332-a second mount; 35-a heat dissipation structure; 351-a thermal vessel; 353-a heat conducting plate; 3530-metallic aluminum plate; 3531-concave; 3532-a bent configuration; 355-heat collector.

Detailed Description

Referring to fig. 4 and 5,base:Sub>A top perspective view of an embodiment ofbase:Sub>A battery module withbase:Sub>A heat dissipation structure according to the present invention andbase:Sub>A front sectional view of the linebase:Sub>A-base:Sub>A' of the embodiment of fig. 4 are respectively shown. As shown in fig. 4 and 5, the battery module 300 of the present embodiment includes a metal housing 31, a plurality of battery cells 32, a battery holder 33, and at least one heat dissipation structure.

The battery holder 33 includes a first holder 331 and a second holder 332. The first and

second holders

331 and 332 respectively include sleeves (not shown). The upper end of each battery cell 32 is sleeved in the sleeve of the first fixing frame 331, and the lower end is sleeved in the sleeve of the second fixing frame 332, so that each battery cell 32 can be fixed between the first fixing frame 331 and the second fixing frame 332, and the battery cells 32 keep a gap. In the present embodiment, the battery cells 32 are arranged in a matrix arrangement in the battery holder 33. Furthermore, the battery holder 33 accommodating and fixing the battery core 32 is disposed inside the metal shell 31, so as to protect the battery holder 33 and the battery core 32 through the metal shell 31.

Each heat dissipation structure includes a plurality of thermal containers 351, a heat conducting plate 353, and at least one heat collector 355. The thermal container 351 may be a metal cylinder or a metal heat pipe made of aluminum or copper, and the appearance of the body thereof may be made in a square, diamond, triangle or circular shape. Each thermal container 351 is to be inserted in a space maintained between a plurality of adjacent battery cells 32.

Further referring to fig. 6, the heat conducting plate 353 is a saw-toothed plate body made of a flat aluminum sheet 3530 through a stamping process or a bending process. The serrated heat conductive plate 353 is interposed in the space between the plurality of heat containers 351 and the plurality of battery cells 32. Further, a plurality of concave portions 3531 are formed in the heat conductive plate 353 having the zigzag shape. In the present invention, the depth of the concave portion 3531 and the shape of the concave portion thereof are designed to correspond to the appearance of the thermal container 351, and when the thermal container 351 is accommodated in the concave portion 3531, the partial structure of the thermal container 351 will completely fill the space in the concave portion 3531, so that the thermal container 351 is closely attached to the concave portion 3531. In addition, the heat collector 355 may be a metal cylinder made of aluminum or copper or a heat dissipation fin, and the appearance of the body may be made into a triangle, square, diamond or any other shape. The heat collector 355 is disposed on the bent structure 3532 at both ends of the heat conductive plate 353.

Preferably, the heat container 351, the heat conducting plate 353 and the heat collector 355 of the heat dissipation structure can also be assembled into a single heat dissipation component. As shown in fig. 7, during the assembly process, first, each thermal container 351 is aligned to the corresponding concave portion 3531 of the thermal conductive plate 353, and each thermal collector 355 is aligned to the corresponding bent structure 3532 at the two ends of the thermal conductive plate 353; after alignment, the heat containers 351 and the heat collectors 355 are respectively attached to the concave portions 3531 of the heat conductive plates 353 and the bent structures 3532 at two ends by adhesives (such as heat conductive glue), so as to assemble a single heat dissipation assembly. The heat container 351, the heat conductive plate 353 and the heat collector 355 of the heat dissipation structure are assembled into a single heat dissipation assembly, which can be disposed in the battery cell 32 of the battery module 300 in an integrated assembly manner, so as to improve the convenience of mounting the heat dissipation structure.

Specifically, when the battery module 300 is operated, the thermal containers 351 absorb heat generated by the surrounding battery cells 32 due to charge and discharge, respectively. Then, the heat conducting plate 353 conducts the heat absorbed by each heat container 351 to the heat collector 355 with relatively low temperature at two ends of the heat conducting plate 353, so as to collect the heat in the heat collector 355. Therefore, the heat generated by charging and discharging the battery core 32 can be removed by the heat dissipation structure, so as to prevent the battery core 32 from being in a higher temperature state during the charging and discharging operations.

When the heat dissipation structure is disposed in the battery cell 32 of the battery module 300, the heat dissipation structure is connected to the metal case 31 through the heat collectors 355 disposed at both ends of the heat conductive plate 353. Then, when the battery module 300 is in operation, the heat collected by the heat collector 355 can be further conducted to the metal shell 31, and then the heat conducted to the metal shell 31 can be carried away by the convection of the external air. Of course, in order to increase the heat dissipation efficiency, in the present invention, referring to the prior art, the blowing fan (151) and the suction fan (153) are respectively disposed on two sides of the metal casing (31), so as to further take away the heat collected by the metal casing (31) through the blowing of the blowing fan (151) and the air suction of the matching fan (153).

Accordingly, the heat generated by charging and discharging of the battery cell 32 is carried away by the heat dissipation structure, and the carried heat can be dissipated by the metal case 31 connected to the heat dissipation structure. Thus, the battery cell 32 can be prevented from being in a high temperature state during the charging and discharging operations, so as to reduce the risk of damage to the battery cell 32.

Further, as shown in fig. 4 and 5, in an embodiment of the present invention, the heat collectors 355 disposed at both ends of the heat conducting plate 353 extend along the horizontal direction of the heat conducting plate 353 and are connected to the metal shell 31. Alternatively, as shown in fig. 8, in another embodiment of the present invention, heat collectors 355 disposed at both ends of the heat conductive plate 353 extend in a vertical direction of the heat conductive plate 353 and are connected to the metal shell 31.

The above description is only an example of the present invention, and is not intended to limit the scope of the present invention, which is to be construed as limited only by the appended claims and equivalents thereof.

Claims

1. A battery module having a heat dissipation structure, comprising:

a plurality of battery cells;

the battery fixing frame is used for accommodating and fixing the plurality of battery cores; and

a heat dissipation structure comprising:

a plurality of thermal containers, each of which is inserted into a space maintained between a plurality of adjacent battery cells and stores heat generated by charging and discharging of the battery cells at the periphery;

at least a heat conductive plate sandwiched in the gaps between the plurality of heat containers and the plurality of battery cells; and

and the heat collector is connected with the heat conducting plate, and the heat stored in the plurality of heat containers is conducted to the heat collector through the heat conducting plate.

2. The battery module with a heat dissipation structure as set forth in claim 1, wherein the heat conductive plate is a serrated plate body.

3. The battery module with a heat dissipation structure as set forth in claim 2, wherein the heat conductive plate is made of a metal aluminum plate in a flat plate form through a stamping or bending process.

4. The battery module with the heat dissipating structure as set forth in claim 2, wherein the plate body of the heat conducting plate includes a plurality of recesses, and each of the heat containers is received in a corresponding one of the recesses.

5. The battery module with the heat dissipation structure as set forth in claim 4, wherein a space in the recess of the heat conductive plate is filled with the thermal container accommodated therein.

6. The battery module having a heat dissipation structure according to claim 1, wherein the plurality of heat containers are metal cylinders or metal heat pipe bodies in the form of a square, a diamond, a triangle, or a circle, respectively.

7. The battery module with a heat dissipating structure of claim 4, wherein the heat collector is disposed on the bent structure at both ends of the heat conductive plate.

8. The battery module with the heat dissipation structure as set forth in claim 1, wherein the heat collector is a metal cylinder or a heat dissipation fin.

9. The battery module with the heat dissipation structure as recited in claim 1, wherein the battery module further includes a metal case, the battery holder and the heat dissipation structure are disposed inside the metal case, and the heat conductive plate of the heat dissipation structure is connected to the metal case through the heat collector.

10. The battery module with a heat dissipation structure as recited in claim 7, wherein the plurality of thermal containers are attached to the plurality of recesses of the thermal conductive plate by an adhesive, and the plurality of heat collectors are attached to the bent structures at both ends of the thermal conductive plate by the adhesive to form a heat dissipation assembly.