Battery structure with heat-conducting and leakage-proof bottom
By setting a thermally conductive silicone pad and an NTC acquisition board at the bottom of the battery cell module, the short circuit risk and poor heat dissipation caused by leakage of the PACK module are solved, thereby improving the safety and heat dissipation effect of the battery structure.
Patent Information
- Application Number
- CN202520255758.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing PACK modules can only be placed on their side or lying down. If they leak, the liquid will flow directly to the bottom of the chassis, which can easily lead to short circuits and fire risks, and the heat dissipation effect is poor.
A thermally conductive silicone pad is placed at the bottom of the battery cell module and wrapped with a PC insulating sheet to form a side plate structure. Combined with an NTC acquisition board for temperature monitoring, this achieves both thermal conductivity and leak prevention.
It effectively dissipates heat, prevents electrolyte leakage, reduces the risk of short circuits, achieves better temperature control and heat dissipation, and improves the lifespan of the battery cells.
Smart Images
Figure CN223583040U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a bottom heat conduction leakproof battery structure. BACKGROUND
[0002] With the in-depth development of new energy industries such as energy storage, photovoltaic and wind energy, various new energies are integrated with each other to form complementary energy stations.
[0003] From the current market, the existing conventional PACK module is directly pasted with epoxy plate or PC insulating sheet at the bottom, which can only play an insulating role and cannot play the functions of liquid leakage prevention and heat conduction. Moreover, due to the limitation of the structure of the PACK module, the battery cells can only be placed on the side or laid, which affects the best use mode of the battery cells; at the same time, the battery cells are relatively close to the bottom plate of the case, and after the battery cells leak, the leaked liquid directly flows to the bottom of the case, which is easy to react with the case to cause short circuit and fire, and there is a certain risk, which also reduces the service life of the battery cells to a certain extent. SUMMARY
[0004] Therefore, the utility model provides a bottom heat conduction leakproof battery structure, which aims at solving the problems that the existing PACK module can only be placed on the side or laid, the leaked liquid directly flows to the bottom of the case after leakage, is easy to react with the case to cause short circuit and fire, and has a certain risk.
[0005] To achieve the above-mentioned purpose, the utility model embodiment proposes the following technical scheme: a bottom heat conduction leakproof battery structure, comprising a box body, a battery cell module and a heat-conducting silica gel disc; the battery cell module and the heat-conducting silica gel disc are both arranged in the box body; the heat-conducting silica gel disc is sleeved on the bottom of the battery cell module; the heat-conducting silica gel disc is abutted with the battery cell module and the bottom of the box body respectively;
[0006] The heat-conducting silica gel disc comprises a heat-conducting silica gel sheet and an insulating sheet, the insulating sheet forms a side plate structure around the heat-conducting silica gel sheet, and the heat-conducting silica gel sheet is provided with a plurality of grooves on the side surface close to the battery cell module.
[0007] As a preferred embodiment, the length of the heat-conducting silica gel disc is greater than the length of the battery cell module, and the width of the heat-conducting silica gel disc is greater than the width of the battery cell module.
[0008] As a preferred embodiment, a gap is arranged between the two ends of each groove and the insulating sheet; a plurality of grooves are arranged at equal intervals, and the plurality of grooves are arranged in parallel with each other.
[0009] As a preferred embodiment, the heat-conducting silica gel sheet and the insulating sheet are integrally arranged.
[0010] As a preferred implementation, the insulating sheet is a PC insulating sheet.
[0011] As a preferred implementation, the top of the battery cell module is provided with an NTC collection plate, which is arranged in correspondence with the battery cell module; and the top of the box is covered with a cover plate.
[0012] As a preferred implementation, the NTC collection plate comprises a fixing portion arranged on one side of the battery cell module and a plurality of connecting portions arranged on the top of the battery cell module, one end of each connecting portion is connected with the fixing portion, and the connecting portions are integrally formed with the fixing portion; and the connecting portions are arranged in parallel with each other.
[0013] As a preferred implementation, the fixing portion is a T-shaped fixing portion, comprising a parallel portion and a vertical portion arranged integrally; the parallel portion is connected with each connecting portion; and the vertical portion is provided with a connecting terminal away from one side of the battery cell module.
[0014] As a preferred implementation, the connecting portions are arranged at equal intervals; each connecting portion is provided with a plurality of collection portions on both sides, and the collection portions are connected with the corresponding battery cell module.
[0015] As a preferred implementation, the collection portions are integrally formed with the connecting portions; and the collection portions are arranged in correspondence with the battery cell module.
[0016] As a preferred implementation, the connecting portion is provided with a through hole corresponding to the explosion-proof valve of the battery cell module, and the through hole is arranged in correspondence with the battery cell module.
[0017] The application has the following beneficial effects: the heat of the battery cell module can be effectively conducted to the box through the heat-conducting silica gel disc arranged at the bottom of the battery cell module, so that the heat dissipation of the battery cell module is facilitated; meanwhile, the side plate is formed by folding the PC insulating sheet around the heat-conducting silica gel, which can prevent the leakage of electrolyte of the battery cell, avoid the short circuit caused by the corrosion of the electrolyte on the surface of the box, and effectively reduce the problems of heat dissipation and electrolyte leakage of the PACK module; the NTC collection plate arranged at the top of the battery cell module can avoid the delay of the nickel sheet conduction, can determine the connection reliability of the laser welding through temperature, and can effectively collect the temperature of the battery cell in the middle of the module, so that more effective temperature control management is realized. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.
[0019] Figure 1 It is a whole structure schematic view of the bottom heat-conducting leakage-proof battery structure of the embodiment of the present application.
[0020] Figure 2 It is a whole structure schematic view of the bottom heat-conducting leakage-proof battery structure of the embodiment of the present application. Figure 1
[0021] Figure 3 It is a structure schematic view of the heat-conducting silica gel disc of the embodiment of the present application. Figure 2
[0022] It is a partial internal structure schematic view of the bottom heat-conducting leakage-proof battery structure of the embodiment of the present application. Figure 4 Figure 1 It is a structure schematic view of the NTC collection plate of the embodiment of the present application.
[0023] Figure 5 The implementation, functional features and advantages of the present application will be further described with reference to the drawings. Figure 4 Specific implementation
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0025] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, top, bottom, …), the directional indications are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications also change accordingly.
[0026]
[0027] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0028] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element.
[0029] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.
[0030] Specifically, as shown in Figures 1 to 3 The utility model discloses a bottom heat conduction leakproof battery structure, including 10 box body, 20 electric core module and heat conduction silica gel tray 30;The electric core module 20 and heat conduction silica gel tray 30 all set up in the box body 10;Heat conduction silica gel tray 30 is set in the bottom of electric core module 20;Heat conduction silica gel tray 30 is respectively with electric core module 20, the bottom 11 of box body 10 and is arranged and is in contact with;
[0031] Heat conduction silica gel tray 30 includes heat conduction silica gel sheet 31 and insulating sheet 32, and the insulating sheet 32 is enclosed in the four around heat conduction silica gel sheet 31 and forms side plate structure;Heat conduction silica gel sheet 31 is provided with a plurality of grooves 311 on the side surface close to electric core module 20.
[0032] The application can effectively guide the heat of the module out of the box by setting the heat-conducting silica gel disc 30 at the bottom of the battery module 20, facilitating the heat dissipation of the module; meanwhile, the side plate is formed by wrapping the heat-conducting silica gel with the PC insulating sheet, which can prevent the leakage of electrolyte of the battery, avoid the short circuit caused by the corrosion of the electrolyte on the surface of the box, and effectively reduce the problems of heat dissipation and electrolyte leakage of the PACK module.
[0033] As a preferred embodiment, the length of the heat-conducting silica gel disc 30 is greater than the length of the battery module 20, and the width of the heat-conducting silica gel disc 30 is greater than the width of the battery module 20. In this way, the outflow of electrolyte can be further prevented, and a double protection effect can be achieved.
[0034] As a preferred embodiment, a gap is arranged between the two ends of each groove 311 and the insulating sheet 32; a plurality of grooves 311 are arranged at equal intervals, and the plurality of grooves 311 are arranged in parallel with each other. By arranging the gap and the plurality of grooves 311 and controlling the arrangement mode, the electrolyte of the battery module 20 can flow smoothly into the grooves 311 and accumulate after leakage, avoiding the penetration of electrolyte from the side and the corrosion of the box.
[0035] As a preferred embodiment, the heat-conducting silica gel sheet 31 and the insulating sheet 32 are integrally arranged. In this way, the leakage can be further prevented.
[0036] As a preferred embodiment, the insulating sheet 32 is a PC insulating sheet. The combination of the PC insulating sheet and the heat-conducting silica gel can effectively guide the heat of the battery module 20 out of the box 10, facilitating the heat dissipation of the battery module 20.
[0037] As a preferred embodiment, as shown in Figure 2 , Figure 4 and Figure 5 , the top of the battery module 20 is provided with an NTC collection plate 40, the NTC collection plate 40 is arranged in adaptation with the battery module 20; and the top of the box 10 is covered with a cover plate 50.
[0038] As a preferred embodiment, the NTC collection plate 40 includes a fixing part 41 arranged on one side of the battery module 20 and a plurality of connecting parts 42 arranged on the top of the battery module 20, one end of each connecting part 42 is connected with the fixing part 41, and the connecting part 42 and the fixing part 41 are integrally formed; and the plurality of connecting parts 42 are arranged in parallel with each other.
[0039] In this way, the NTC collecting plate 40 is directly attached to the surface of the battery cell, solving the problem that the middle battery cell cannot be collected by the NTC after the module is grouped; meanwhile, the nickel sheet conduction and the glue fixed to the surface of the battery cell are avoided, the temperature delay problem is solved, the temperature of the middle battery cell in the module can be effectively collected, the real-time temperature of the battery cell can be monitored, the delay of the nickel sheet conduction can be avoided, the connection reliability of the laser welding can be judged by the temperature, and the temperature control management can be more effectively performed.
[0040] As a preferred embodiment, the fixing part 41 is a "T"-shaped fixing part, which comprises a parallel part 411 and a vertical part 412 arranged integrally; the parallel part 411 is connected with each connecting part 42; and the vertical part 412 is provided with a connecting terminal 413 away from one side of the battery cell module 20.
[0041] As a preferred embodiment, the plurality of connecting parts 42 are arranged at equal intervals; and each connecting part 42 is provided with a plurality of collecting parts 421 on both sides, which are connected with the corresponding battery cell module 20.
[0042] As a preferred embodiment, the collecting part 421 is arranged integrally with the connecting part 42; and the collecting part 421 is arranged correspondingly with the battery cell module 20.
[0043] In the embodiment, the connecting part 42 is provided with a through hole 422 matched with the explosion-proof valve of the battery cell module 20, and the through hole 422 is arranged correspondingly with the battery cell module 20. In this way, while ensuring better temperature control management, the battery cell module can be normally operated according to the conventional arrangement.
[0044] The utility model discloses a simple structure, good heat dissipation effect, convenient to disassemble and assemble, easy maintenance, good stability, economic safety practical, can satisfy the need of actual use well.
[0045] In the description of the present application, the description of the terms "an embodiment", "an example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.
[0046] In addition, it should be understood that although the present application is described in terms of embodiments, each embodiment does not only contain one independent technical solution, and the description of the present application is only for the sake of clarity, and those skilled in the art should consider the present application as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0047] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, as described in the present application specification and drawings, is included in the patent protection scope of the present application.
Claims
1. A battery structure with bottom heat conduction and leak prevention, characterized in that, The device includes a housing, a battery cell module, and a thermally conductive silicone pad; both the battery cell module and the thermally conductive silicone pad are disposed within the housing; the thermally conductive silicone pad is fitted onto the bottom of the battery cell module; the thermally conductive silicone pad is respectively positioned to abut against the bottom of the battery cell module and the bottom of the housing. The thermally conductive silicone pad includes a thermally conductive silicone sheet and an insulating sheet. The insulating sheet surrounds the thermally conductive silicone sheet to form a side plate structure. Several grooves are provided on the side of the thermally conductive silicone sheet near the battery cell module.
2. The bottom-heat-conducting and leak-proof battery structure according to claim 1, characterized in that, The length of the thermally conductive silicone pad is greater than the length of the battery cell module, and the width of the thermally conductive silicone pad is greater than the width of the battery cell module.
3. The bottom-heat-conducting and leak-proof battery structure according to claim 1, characterized in that, Each groove has a gap between its two ends and the insulating sheet; the grooves are evenly spaced and arranged parallel to each other.
4. The bottom-heat-conducting and leak-proof battery structure according to claim 1, characterized in that, The thermally conductive silicone pad and the insulating pad are integrally formed; the insulating pad is a PC insulating pad.
5. The bottom-heat-conducting and leak-proof battery structure according to claim 1, characterized in that, The top of the battery cell module is equipped with an NTC acquisition board, which is adapted to the battery cell module; the top of the housing is covered with a cover plate.
6. The bottom-heat-conducting and leak-proof battery structure according to claim 5, characterized in that, The NTC acquisition board includes a fixing part disposed on one side of the battery cell module and a plurality of connecting parts disposed on the top of the battery cell module. One end of each connecting part is connected to the fixing part, and the connecting part and the fixing part are integrally formed. The plurality of connecting parts are arranged parallel to each other.
7. The bottom-heat-conducting and leak-proof battery structure according to claim 6, characterized in that, The fixing part is a T-shaped fixing part, including an integrally formed parallel part and a vertical part; the parallel part is connected to each of the connecting parts; the vertical part has a connecting terminal on the side away from the battery cell module.
8. The bottom-heat-conducting and leak-proof battery structure according to claim 6, characterized in that, Multiple connecting parts are equally spaced; each connecting part has multiple acquisition units on both sides, and the acquisition units are connected to the corresponding battery cell module.
9. The bottom-heat-conducting and leak-proof battery structure according to claim 8, characterized in that, The acquisition unit and the connection unit are integrally formed; the acquisition unit is correspondingly arranged with the battery cell module.
10. The bottom-heat-conducting and leak-proof battery structure according to claim 8, characterized in that, The connecting part is provided with a through hole adapted to the explosion-proof valve of the battery cell module, and the through hole is adapted to the battery cell module.