Air duct structure of mixed battery cell monomer

Abstract

The utility model relates to an air duct structure of a mixed battery cell monomer, which comprises a battery cell module formed by arranging a plurality of rows of battery cell row groups at intervals, and each row of battery cell row group is provided with at least one battery cell monomer; and the at least one elastic piece is configured between the two adjacent battery cell row groups, and a plurality of heat dissipation channels are formed between the two adjacent battery cell row groups.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core modules, and in particular to an air duct structure of a hybrid battery core monomer. Background Art

[0002] Most of the battery or capacitor monomer air cooling structures on the market are like this Figure 1 As shown, the upper plastic plate 10 and the lower plastic plate 30 are used to fix the monomer 20, and separate the monomers 20 from each other to leave a heat dissipation duct, so that the air cooling can take away the heat on the large surface of the monomer. The upper plastic plate 10 and the lower plastic plate 30 of the structural parts can only be manufactured by CNC processing or 3D printing in the proofing stage, and the sample cost is relatively high. After the product is converted into batches, it is necessary to open a plastic mold, and at this time, the mold opening involves the cost of the mold. Nowadays, the new energy market is highly competitive. If a product cannot be mass-produced, the final initial investment in sample production costs and mold opening costs will bring a considerable burden to the company.

[0003] More importantly, the above-mentioned monomer fixing structure cannot provide effective pre-tightening force to the monomer, such as Figure 2 In the structure shown, the large surface of the monomer 20 is completely in a free state; Figure 3 As shown, we know that the large surface of the monomer 20 will generate a large amount of internal heat as the charge and discharge cycles during work, and the heat will cause the material inside the monomer 20 to expand. At this time, if the large surface of the monomer 20 has no force to offset the expansion force of the internal product of the monomer 20, it will eventually cause the large surface of the monomer 20 to deform and swell; as the number of charge and discharge cycles increases, the large surface of the monomer 20 will swell more and more, which may eventually cause the air duct to become narrower and narrower or even blocked. The normal air duct 41 will become a blocked air duct 42, resulting in a significant reduction in heat dissipation performance, thereby affecting the operation of the unit 20, causing safety hazards, and even serious safety accidents. Utility Model Content

[0004] In view of the above situation, it is necessary to propose an air duct structure of a hybrid battery cell monomer that ensures the heat dissipation performance of the battery cell.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an air duct structure of a hybrid battery cell monomer, comprising:

[0006] A battery cell module is formed by arranging a plurality of rows of battery cell groups at intervals, and each row of the battery cell groups has at least one battery cell;

[0007] An elastic member, at least one of which is disposed between two adjacent battery cell groups, and a plurality of heat dissipation channels are provided between the two adjacent battery cell groups.

[0008] Furthermore, it also includes an end plate and a side plate, which includes a front end plate arranged at the front end of the battery cell module and a rear end plate at the rear end of the battery cell module; the side plate includes a left side plate arranged on the left side of the battery cell module and a right side plate arranged on the right side of the battery cell module, and the two ends of the side plate are respectively connected to the front end plate and the rear end plate, the side plate and the end plate surround the battery cell module, and the left side plate and the right side plate are provided with a plurality of through holes, and the through holes are arranged corresponding to the heat dissipation channels.

[0009] Furthermore, the front end plate and the rear end plate clamp the battery cell module so that the elastic member has a pre-tightening restoring force.

[0010] Furthermore, the preload restoring force of the elastic member is smaller than the maximum restoring force of the elastic member.

[0011] Furthermore, the elastic member is made of insulating and high temperature resistant material.

[0012] Furthermore, the elastic member is made of high temperature resistant rubber or high temperature resistant silicone.

[0013] Furthermore, the elastic member is bonded to the battery cell array by means of high temperature resistant glue.

[0014] Furthermore, there are two or more elastic members spaced apart between two adjacent battery cell arrays, forming at least one heat dissipation channel.

[0015] Furthermore, the elastic member is in the shape of an elongated strip.

[0016] Furthermore, the length of the elastic member is 0.8-1 times the length of the battery cell array.

[0017] The beneficial effect of the utility model is that elastic parts are arranged between the battery cell groups, and when the large surface of the battery cell group expands, the elastic parts generate a restoring force, which can offset and absorb the expansion of the battery cell monomers, so that the battery cell monomers will not block the air duct during the cyclic charge and discharge process due to the lack of constraints on the large surface of the monomers, thereby ensuring the heat dissipation performance of the battery cell module, ensuring the normal operation of the battery cell module, and improving the safety of the battery cell module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the decomposition structure of the prior art;

[0019] Figure 2 It is a structural schematic diagram of the heat dissipation duct of the prior art;

[0020] Figure 3 It is a structural schematic diagram of a blocked air duct and a normal air duct under the prior art;

[0021] Figure 4 This is a schematic diagram of the exploded structure of a hybrid battery cell of an embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of a hybrid battery cell monomer according to an embodiment of the utility model.

[0023] Description of labels:

[0024] 10. Upper plastic galvanized plate; 20. Single body; 30. Lower plastic galvanized plate; 40. Cooling duct;

[0025] 41. Normal air duct; 42. Blocked air duct.

[0026] 110, battery cell array; 111, battery cell monomer; 112, heat dissipation channel; 200, elastic member;

[0027] 300, end plate; 301, front end plate; 302, rear end plate; 400, side plate; 401, left side plate;

[0028] 402, right side panel; 410, perforation; 420, folded edge. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the following is a further detailed description of the air duct structure of a hybrid battery cell monomer of the utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] Please refer to Figure 4 and Figure 5 , a wind duct structure of a hybrid battery cell monomer 111, comprising:

[0031] The battery cell module is formed by arranging a plurality of rows of battery cell groups 110 at intervals, and each row of battery cell groups 110 has at least one battery cell 111;

[0032] The elastic member 200 , at least one elastic member 200 , is disposed between two adjacent battery cell groups 110 , and a plurality of heat dissipation channels 112 are formed between the two adjacent battery cell groups 110 .

[0033] An elastic member 200 is arranged between the battery cell groups 110. When the large surface of the battery cell group 110 expands, the elastic member 200 generates a restoring force, which can offset and absorb the expansion of the battery cell single body 111. In this way, the battery cell single body 111 will not block the air duct during the cyclic charge and discharge process due to the lack of constraint on the large surface of the single body, thereby ensuring the heat dissipation performance of the battery cell module, ensuring the normal operation of the battery cell module, and improving the safety of the battery cell module.

[0034] Please refer to Figure 4 and Figure 5 , also includes an end plate 300 and a side plate 400, including a front plate 301 arranged at the front end of the battery module and a rear plate 302 at the rear end of the battery module; the side plate 400 includes a left plate 401 arranged on the left side of the battery module and a right plate 402 on the right side of the battery module, the two ends of the side plate 400 are respectively connected to the front plate 301 and the rear plate 302, the side plate 400 and the end plate 300 surround the battery module, the left plate 401 and the right plate 402 are provided with a plurality of through holes 410, and the through holes 410 are provided corresponding to the heat dissipation channel 112. The use of the end plate 300 and the side plate 400 does not require customized mold opening to adapt to the electrodes on the battery cell monomer 111 like the upper and lower plates, which can effectively reduce the development cost. Simply, the end plate 300 and the side plate 400 can be connected by screwing or welding, preferably laser welding, so as to facilitate automated production. Particularly, the bottom of the side plate 400 has a folded edge 420 to support the bottom surface of the battery cell module (the side facing away from the battery cell electrodes).

[0035] In particular, the front end plate 301 and the rear end plate 302 clamp the battery module so that the elastic member 200 has a pre-tightening restoring force. The elastic member 200 generates a pre-tightening restoring force by clamping the capacitor membrane group by the end plate 300, so that the elastic member 200 can better offset and absorb the expansion of the battery cell 111, and even if the battery cell 111 expands, its expansion degree can be reduced, further improving the heat dissipation performance and safety performance of the module. It can be understood that when welding is used to connect the end plate 300 and the side plate 400, since the elastic member 200 has a restoring force and needs to have a pre-tightening restoring force, the shape can be maintained by a clamp before welding.

[0036] Preferably, the preload restoring force of the elastic member 200 is smaller than the maximum restoring force of the elastic member 200, which ensures that the elastic member 200 can not only offset the expansion but also absorb the expansion when the battery cell 111 expands, and avoids generating a large restoring force when there is no expansion, which causes the battery cell 111 to deform.

[0037] Preferably, the elastic member 200 is made of an insulating high temperature resistant material. The use of insulating materials can improve electrical safety, and the use of high temperature resistant materials can adapt to the high temperature generated when the battery cell 111 is working.

[0038] In particular, the elastic member 200 is made of high temperature resistant rubber or high temperature resistant silicone. In particular, the high temperature resistant silicone can be made of high temperature resistant foamed silicone. Alternatively, other materials may be used as required.

[0039] Preferably, the elastic member 200 is bonded to the battery cell array 110 by a high temperature resistant adhesive. The high temperature resistant adhesive can be glue or double-sided adhesive as required. It can be understood that the two end surfaces of the elastic member 200 are respectively bonded to the two connected battery cell arrays 110.

[0040] In particular, there are two or more elastic members 200 disposed at intervals between two adjacent battery cell arrays 110, and at least one heat dissipation channel 112 is formed. Figure 4 and Figure 5 There are two elastic members 200 spaced apart from each other between two adjacent battery cell arrays 110, and a heat dissipation channel 112 is formed between the two elastic members 200. It can be understood that when upper and lower galvanic plates are provided, the heat dissipation channel 112 can also be formed by the elastic member 200 and the upper galvanic plate or the lower galvanic plate.

[0041] Please refer to Figure 4 and Figure 5 The elastic member 200 is in the shape of an elongated strip. The elongated strip has a large contact surface and can better adapt to the square-shaped battery cell 111; simply, when a cylindrical battery cell 111 is used, arc grooves adapted to the battery cell 111 can be provided on both end surfaces of the elastic member 200 as needed to increase the contact surface with the battery cell 111.

[0042] In particular, the length of the elastic member 200 is 0.8-1 times the length of the battery cell group 110. The length of the elastic member 200 is ensured so as to better prevent the expansion of the battery cell 111. It is understandable that the elastic member 200 may slightly exceed the length of the battery cell group 110 when there is no restoring force, and the elastic member 200 is compressed by the abutment of the side plate 400 so as to be the same length as the battery cell group 110.

[0043] It can be understood that the technical solution of the present invention can be applied to batteries (including lithium batteries and other batteries) and capacitors, that is, the battery cell 111 of the present invention can be (including lithium batteries and other batteries) or capacitors.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In summary, the utility model provides an air duct structure of a hybrid battery cell monomer, wherein elastic parts are arranged between battery cell groups, and when the large surface of the battery cell group expands, the elastic parts generate a restoring force, which can offset and absorb the expansion force of the battery cell monomer, and the elastic parts have a pre-tightening restoring force through the clamping of the front end plate and the rear end plate, so that the battery cell monomer will not block the air duct during the process of cyclic charge and discharge due to the lack of constraint on the large surface of the monomer, thereby ensuring the heat dissipation performance of the battery cell module, ensuring the normal operation of the battery cell module, and improving the safety of the battery cell module.

[0046] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A wind duct structure of a hybrid battery cell, characterized in that: include: A battery cell module is formed by arranging a plurality of rows of battery cell groups at intervals, and each row of the battery cell groups has at least one battery cell; An elastic member, at least one of which is disposed between two adjacent groups of battery cells, and a plurality of heat dissipation channels are provided between the two adjacent groups of battery cells; It also includes an end plate and a side plate, which includes a front end plate arranged at the front end of the battery cell module and a rear end plate at the rear end of the battery cell module; the side plate includes a left side plate arranged on the left side of the battery cell module and a right side plate arranged on the right side of the battery cell module, and the two ends of the side plate are respectively connected to the front end plate and the rear end plate, the side plate and the end plate surround the battery cell module, and the left side plate and the right side plate are provided with a plurality of through holes, and the through holes are arranged corresponding to the heat dissipation channels.

2. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: The front end plate and the rear end plate clamp the battery core module so that the elastic member has a pre-tightening restoring force.

3. The air duct structure of a hybrid battery cell according to claim 2, characterized in that: The preload restoring force of the elastic member is smaller than the maximum restoring force of the elastic member.

4. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: The elastic member is made of insulating high temperature resistant material.

5. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: The elastic member is made of high temperature resistant rubber or high temperature resistant silicone.

6. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: The elastic member is bonded to the battery cell array by means of high temperature resistant glue.

7. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: There are two or more elastic members spaced apart between two adjacent battery cell groups, forming at least one heat dissipation channel.

8. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: The elastic member is in the shape of an elongated strip.

9. The air duct structure of a hybrid battery cell according to claim 1, characterized in that: The length of the elastic member is 0.8-1 times the length of the battery cell array.

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