Power battery pack and energy storage equipment
By connecting individual battery cells with male and female snap-fit connectors and using a metal casing or thermally conductive structure to interface with a heat dissipation structure, the problems of complex assembly and poor heat dissipation of power battery packs are solved, achieving simplified assembly and efficient heat dissipation.
Patent Information
- Application Number
- CN202422879589.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The existing power battery pack assembly process is complex and has poor heat dissipation, especially for large power battery packs, which are difficult to assemble and have unsatisfactory heat dissipation.
The battery cells are connected by male and female snap-fit connectors and are connected to the heat dissipation structure through a metal shell or thermal conductive structure. They are then secured with long screws, which simplifies the assembly process and improves heat dissipation efficiency.
It simplifies the assembly of battery modules and achieves efficient heat dissipation, reducing assembly difficulty and improving heat dissipation.
Smart Images
Figure CN223598886U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power battery field especially relates to power battery pack and energy storage equipment. BACKGROUND
[0002] The power battery pack is composed of a box body and a plurality of battery modules, that is, a plurality of battery monomers are assembled into a battery module, and then the battery module is installed into the box body to form the power battery pack. In the prior art, the battery monomers are stacked one by one with the foam, and a fixture is needed in the assembling process. The assembling process is troublesome, and the assembled battery module needs to be reinforced with insulating tape. The assembling of the power battery pack with large volume is more difficult, and the single battery monomer is not cooled, so the cooling effect is not ideal.
[0003] Therefore, there is an urgent need for a power battery pack and energy storage equipment that can reduce the assembling difficulty of the battery module and improve the cooling effect to overcome the above-mentioned defects. SUMMARY
[0004] The utility model discloses a kind of power battery packs that can reduce the assembling difficulty of battery module and improve the cooling effect.
[0005] Another purpose of the utility model is to provide a kind of energy storage equipment that can reduce the assembling difficulty of battery module and improve the cooling effect.
[0006] To achieve the above-mentioned purpose, the power battery pack provided by the utility model includes a box body and a battery module installed in the box body. The battery module is composed of a plurality of stacked battery monomers. One of the two adjacent battery monomers is provided with a male buckle, and the other is provided with a female buckle. The two adjacent battery monomers are connected to each other by the engagement of the male buckle and the female buckle. At least one side of the box body is provided with a cooling structure. The battery monomer includes a metal shell, which is directly or through a heat-conducting structure connected to the cooling structure.
[0007] Preferably, all battery monomers are also locked and reinforced by long screws.
[0008] Preferably, through holes are provided at the four corners of the battery monomer, and the long screws pass through the through holes to lock and reinforce all battery monomers.
[0009] Preferably, the box body is a frame structure formed by a plurality of side plates connected to each other, and one of the side plates forms the cooling structure. Part of the male buckles and the female buckles are exposed to the box body.
[0010] Preferably, the cooling structure includes a plate body and a plurality of cooling fins installed on the outer side of the plate body in a perpendicular manner. The cooling fins are arranged in parallel.
[0011] Preferably, the battery module is provided with heat-conductive silicone grease on the side facing the heat dissipation structure, and the battery module is connected to the heat dissipation structure through the heat-conductive silicone grease.
[0012] Preferably, the battery cell further comprises a plastic shell and a soft-pack battery, the plastic shell is connected to the metal shell by mutual buckling and both of them jointly enclose a structural inner cavity, and the soft-pack battery is arranged in the structural inner cavity.
[0013] Preferably, the battery cell further comprises a foam sheet provided with adhesive on both sides, and the soft-pack battery is attached to the metal shell through the foam sheet.
[0014] Preferably, the metal shell is folded at both sides to form a connecting structure, the connecting structure is provided with a connecting through hole, the plastic shell is provided with a connecting protrusion on each side surface, the metal shell is in a half-enclosed form to enclose the plastic shell, and the connecting protrusion is clamped into the connecting through hole to be buckled and connected to the plastic shell.
[0015] To achieve the above-mentioned another object, the energy storage device provided by the present application comprises the power battery pack.
[0016] Compared with the prior art, in the present application, the battery cells are connected to each other by clamping the male buckle and the female buckle, and the positioning and assembly connection are realized at the same time by clamping the male buckle and the female buckle, without the need for tool clamps throughout the process, simplifying the assembly process and reducing the assembly difficulty of the battery module. Moreover, each battery cell comprises a metal shell, and the heat generated by the battery cell can be conducted through the metal shell. If the metal shell is directly connected to the heat dissipation structure, the conducted heat can be directly transmitted to the heat dissipation structure for external heat dissipation. If the metal shell is connected to the heat dissipation structure through a heat-conducting structure, the conducted heat is transmitted through the heat-conducting structure and then output to the heat dissipation structure for external heat dissipation. Therefore, no matter which of the above two heat-conducting schemes is used, the heat of each battery cell can be directly conducted outward, improving the heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a perspective view of the power battery pack of the present application.
[0018] Figure 2 is a perspective view of the power battery pack of the present application from another angle.
[0019] Figure 3 is a perspective view of the power battery pack of the present application separated from the heat dissipation structure.
[0020] Figure 4 is a perspective exploded view of the power battery pack of the present application.
[0021] Figure 5 is a perspective view of the battery module of the present application after one long screw rod is separated.
[0022] Figure 6 is the perspective view of the two adjacent battery monomers after clamping connection in the utility model.
[0023] Figure 7 is the perspective exploded view of the battery monomer of the utility model. DETAILED DESCRIPTION
[0024] In order to explain the technical content and structural features of the utility model, the following further description is made in combination with the embodiments and the accompanying drawings.
[0025] As shown in Figures 1 to 7 The utility model discloses a kind of power battery pack 100, including box 10 and the battery module 20 installed in box 10, battery module 20 is made of multiple stacked battery monomers 21, one of two adjacent battery monomers 21 is provided with clamping male buckle 211, another of two adjacent battery monomers 21 is provided with clamping female buckle 212, and two adjacent battery monomers 21 are connected with each other by the clamping of clamping male buckle 211 and clamping female buckle 212. At least one side of box 10 is provided with heat dissipation structure 11, and battery monomer 21 includes metal shell 213. Metal shell 213 is directly connected with heat dissipation structure 11, or metal shell 213 is connected with heat dissipation structure 11 through heat conduction structure.
[0026] In the utility model, battery monomer 21 is connected with each other by the clamping of clamping male buckle 211 and clamping female buckle 212, and positioning and assembly connection are realized simultaneously by the clamping of clamping male buckle 211 and clamping female buckle 212, without the help of tool fixture throughout, simplify assembly process, reduce the assembly difficulty of battery module 20. Moreover, each battery monomer 21 includes metal shell 213, and the heat generated by battery monomer 21 can be conducted out through metal shell 213. If metal shell 213 is directly connected with heat dissipation structure 11, the conducted heat can be directly transmitted to heat dissipation structure 11 for external heat dissipation, and if metal shell 213 is connected with heat dissipation structure 11 through heat conduction structure, the conducted heat is transmitted to heat dissipation structure 11 for external heat dissipation through heat conduction structure, so that no matter which of the above two heat conduction schemes, the heat of each battery monomer 21 can be directly conducted out, and the heat dissipation effect is improved.
[0027] It should be pointed out that heat conduction structure is a material (such as heat-conducting silicone grease described below) that helps to improve heat transfer effect and heat transfer efficiency. In the utility model, heat conduction structure is arranged between metal shell 213 and heat dissipation structure 11, which also aims to improve heat transfer efficiency and heat transfer effect. It can be understood that, compared with the case where metal shell 213 is directly connected with heat dissipation structure 11, the two cannot achieve close contact, and there is inevitably a gap between them, so the heat transfer effect is slightly worse.
[0028] As shown in Figure 4 , Figure 5 , and Figure 6 , all the battery monomers 21 are also locked and reinforced by long screws 22 to strengthen the structural stability of the battery module 20. Specifically, the four corners of the battery monomers 21 are provided with through holes 214, and the long screws 22 pass through the through holes 214 to lock and reinforce all the battery monomers 21. The four long screws 22 can firmly and stably lock and reinforce all the battery monomers 21.
[0029] As shown in Figure 1 , Figure 2 , Figure 3 , and Figure 4 , the box body 10 is a frame structure formed by a plurality of side plates 12 connected to each other, and one of the side plates 12 forms the heat dissipation structure 11 described above. Preferably, the side plates 12 are made of metal plates, such as alloy plates (such as stainless steel plates), and can also be made of high-strength plastic plates, etc. The side plates 12 are connected by screws, and the box body 10 formed by the connection is generally square, but is not limited thereto. Part of the male buckles 211 and the female buckles 212 are exposed to the box body 10, and at this time, the buckling condition of the male buckles 211 and the female buckles 212 can be directly known to know whether the connection between the battery monomers 21 is loose. Please refer to Figure 2 , preferably, the male buckles 211 and the female buckles 212 located at the bottom side are exposed to the side plate 12 located at the bottom, but are not limited thereto.
[0030] As shown in Figures 1 to 5 , the heat dissipation structure 11 includes a plate body 111 and a plurality of heat dissipation fins 112 installed on the outer side of the plate body 111 in a perpendicular manner, and the heat dissipation fins 112 are arranged in parallel. The purpose of arranging a plurality of parallel heat dissipation fins 112 is to increase the heat dissipation area to the outside, improve the heat dissipation effect and efficiency. The plate body 111 has the same function as the other side plates 12, and also has the function of transferring heat to the heat dissipation fins 112. Preferably, the heat dissipation structure 11 is made of a metal structure. The side of the battery module 20 facing the heat dissipation structure 11 is provided with a heat-conducting silicone grease 30, and the battery module 20 is connected to the heat dissipation structure 11 through the heat-conducting silicone grease 30. In the present application, the heat-conducting silicone grease 30 is equivalent to the heat-conducting structure mentioned above, and the heat-conducting silicone grease 30 plays a role in transferring heat. The heat-conducting silicone grease 30 can fill the gap between the side of the battery module 20 and the plate body 111, so that the heat conduction is more smooth and rapid. In use, the heat-conducting silicone grease 30 is applied to the side of the battery module 20 facing the heat dissipation structure 11, ensuring uniform coverage without air gap, and then the heat dissipation structure 11 is installed.
[0031] As shown in Figure 5 , Figure 6 , and Figure 7As shown, the battery cell 21 further comprises a plastic shell 215 and a soft package battery 216, the plastic shell 215 is connected with the metal shell 213 by mutual buckling and both of them jointly enclose a structural inner cavity (not marked), and the soft package battery 216 is arranged in the structural inner cavity. The heat generated by the soft package battery 216 is conducted to the metal shell 213, facilitating heat dissipation to the outside. The metal shell 213 and the plastic shell 215 jointly protect the soft package battery 216, and the metal shell 213 and the plastic shell 215 are connected by mutual buckling, facilitating assembly.
[0032] Further, the battery cell 21 further comprises a double-sided adhesive foam sheet 217, the soft package battery 216 is attached to the metal shell 213 through the foam sheet 217, which helps to improve the structural stability of the soft package battery 216, avoid shaking and reduce the impact. The metal shell 213 is folded at both edges to form a connecting structure 2131, preferably, the connecting structure 2131 is formed by folding at 90°, the connecting structure 2131 is provided with a connecting through hole 2132, the two side surfaces of the plastic shell 215 are respectively provided with a connecting protrusion 2151, the metal shell 213 is in a half-enclosed form to enclose the plastic shell 215, and the connecting protrusion 2151 is clamped into the connecting through hole 2132 to be buckled and connected with the plastic shell 215. The contact area between the metal shell 213 and the soft package battery 216 is large, which can effectively conduct heat and has high heat conduction efficiency. The metal shell 213 and the plastic shell 215 are connected by the clamping of the connecting protrusion 2151 and the connecting through hole 2132, facilitating assembly.
[0033] As shown in the figure, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 Preferably, if the direction indicated by the arrow Z is defined as the direction from bottom to top, the connecting protrusions 2151 are arranged on the top side surface and the bottom side surface of the plastic shell 215, and the clamping male buckle 211 and the clamping female buckle 212 are also arranged on the top side surface and the bottom side surface of the plastic shell 215, that is to say, the connecting protrusions 2151, the clamping male buckle 211 and the clamping female buckle 212 are on the same side surface of the plastic shell 215. At this time, the heat dissipation structure 11 is located above the battery module 20. If the direction indicated by the arrow Y is defined as the direction from front to back, the side plates 12 on the front side and the rear side of the box body 10 are provided with through holes, which can be used for installing sockets, buttons and the like to realize the functions of inputting / outputting electric energy and controlling switches. If the direction indicated by the arrow X is defined as the direction from left to right, the battery cell 21 is assembled into the battery module 20 in the left-right direction.
[0034] The power battery pack 100 of the utility model can be used for energy storage equipment, which includes but is not limited to outdoor power supply, industrial and commercial energy storage power supply, household energy storage power supply and large container energy storage.
[0035] The above disclosed is only a preferred embodiment of the present application, and cannot be used to limit the scope of the present application, therefore equivalent changes made according to the present application claims are all within the scope of the present application.
Claims
1. A power battery pack, characterized in that: The battery module is composed of a plurality of stacked battery cells, one of two adjacent battery cells is provided with a male buckle, the other of two adjacent battery cells is provided with a female buckle, and the two adjacent battery cells are connected to each other by the engagement of the male buckle and the female buckle.
2. The power battery pack of claim 1, wherein, All the battery cells are also locked and reinforced by a long screw.
3. The power battery pack of claim 2, wherein, The long screw passes through the through hole to lock and reinforce all the battery cells.
4. The power battery pack of claim 1, wherein, The box is a frame structure formed by a plurality of side plates connected to each other, and one of the side plates forms the heat dissipation structure, and part of the male buckles and the female buckles are exposed to the box.
5. The power battery pack of claim 4, wherein, The heat dissipation structure includes a plate body and a plurality of heat dissipation fins installed on the outer side of the plate body in an orthogonal manner, and the heat dissipation fins are arranged in parallel.
6. The power battery pack of claim 5, wherein, The side of the battery module facing the heat dissipation structure is provided with heat-conducting silicone grease, and the battery module is connected to the heat dissipation structure through the heat-conducting silicone grease.
7. The power battery pack of claim 1, wherein, The battery cell also includes a plastic shell and a soft-pack battery, the plastic shell is connected to the metal shell by mutual buckling, and both of them together enclose a structural internal cavity, and the soft-pack battery is arranged in the structural internal cavity.
8. The power battery pack of claim 7, wherein, The battery cell also includes a double-sided adhesive foam sheet, and the soft-pack battery is attached to the metal shell through the foam sheet.
9. The power battery pack of claim 7, wherein, The two sides of the metal shell are folded to form a connecting structure, the connecting structure is provided with a connecting through hole, the two side surfaces of the plastic shell are respectively provided with a connecting protrusion, the metal shell is in a half-enclosed form to enclose the plastic shell, and the connecting protrusion is clamped into the connecting through hole to be buckled and connected with the plastic shell.
10. An energy storage device, characterized by, The power battery pack comprises the power battery pack according to any one of claims 1-9.