Anti-vibration heat dissipation module of battery

Abstract

The invention relates to the field of batteries, in particular to a battery anti-vibration heat dissipation module which comprises a battery module box body serving as a carrier, the battery module box body is of a top opening structure, a detachable battery module end cover is arranged at the top of the battery module box body, and a heat dissipation device is arranged on the battery module end cover; the battery module box body comprises a box body inner layer wall and a box body outer layer wall, and an anti-vibration structure is arranged in an interlayer between the box body outer layer wall and the box body inner layer wall; a plurality of battery jars for placing batteries are arranged in the inner layer wall of the box body, and the adjacent battery jars are isolated by an anti-vibration isolation wall. According to the battery module structure designed by the invention, the internal space of the battery module box body can be fully utilized, and the energy density is improved; the energy-absorbing structure is simple in structure, good in energy-absorbing characteristic, superior to a conventional structure in vibration protection capability, high in heat dissipation efficiency and capable of meeting functional requirements in various environments.

Description

Technical Field

[0001] The invention relates to the field of batteries, and in particular to a battery vibration-proof heat dissipation module. Background Art

[0002] With the vigorous development of the new energy industry, battery safety and lightweight have become key research and development directions for the development of the industry. Among them, the power battery pack is the core component to protect the normal and safe operation of the battery pack. The power battery is composed of multiple battery modules. Its lightweight design is crucial to improving the range of electric vehicles and reducing energy consumption. Currently, many devices that use lithium batteries as driving energy have considered how to prevent external impacts from damaging the power battery pack, but rarely design the damage to the power battery caused by mechanical vibration during the operation of the equipment. To solve this problem, a multifunctional battery module structure design scheme integrating vibration protection and heat dissipation functions is proposed to meet the various needs of lithium-ion batteries in terms of continuous use safety. Summary of the invention

[0003] Based on the above problems, the purpose of the present invention is to provide a battery vibration-proof heat dissipation module, and the present invention adopts the following technical solutions:

[0004] The present invention provides a battery vibration-proof heat dissipation module, comprising a battery module box as a carrier, the battery module box being a top-opening structure, a detachable battery module end cover being arranged on the top of the battery module box, and a heat dissipation device being arranged on the battery module end cover;

[0005] The battery module box body comprises an inner wall of the box body and an outer wall of the box body, and a vibration-proof structure is arranged in the interlayer between the outer wall of the box body and the inner wall of the box body;

[0006] A plurality of battery slots for placing batteries are arranged in the inner wall of the box body, and adjacent battery slots are isolated by vibration-proof isolation walls.

[0007] Preferably, the anti-vibration structure comprises a first porous honeycomb layer made of SMA metamaterial, and the outer side of the first porous honeycomb layer is coated with a first armor layer of metal material;

[0008] The first porous honeycomb layer is composed of a plurality of cell units, each of which includes two regular polygonal ends arranged vertically, a plurality of connectors arranged between the two polygonal ends in a certain regular pattern, and an end of each connector is connected to the corresponding polygonal end.

[0009] Preferably, the polygonal end is a regular hexagon; the connector is S-shaped, and the number of the connectors is 12.

[0010] Preferably, the vibration-proof isolation wall comprises a second porous honeycomb layer made of SMA metamaterial, the outer side of the second porous honeycomb layer is coated with a second armor layer of metal material, and the outer side of the second armor layer is coated with a thermally conductive silicone layer.

[0011] Preferably, the structure of the second porous honeycomb layer is the same as that of the first porous honeycomb layer.

[0012] Preferably, the heat dissipation device comprises a first medium flow channel arranged inside the battery module end cover, and a first circulation inlet and a first circulation outlet communicated with the first medium flow channel.

[0013] Preferably, heat dissipation holes are provided on the battery module box.

[0014] Preferably, the heat dissipation holes are circular holes or grid-shaped holes.

[0015] Preferably, the heat dissipation device includes a heat conductive sheet arranged at the bottom of the battery module end cover and a liquid cooling plate arranged in the battery module box; the upper end of the heat conductive sheet is connected to a grid-type radiator, and the second medium flow channel is serpentinely arranged inside the liquid cooling plate.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are:

[0017] The battery module structure designed in the present invention can fully utilize the internal space of the battery module box to improve energy density; it has good energy absorption characteristics, better vibration protection ability than conventional structures, high heat dissipation efficiency, and can meet functional requirements in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic structural diagram of a battery vibration-proof heat dissipation module in Embodiment 1 of the present invention;

[0020] Figure 2 It is an exploded schematic diagram of the anti-vibration structure in the first embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the first porous honeycomb layer in Embodiment 1 of the present invention;

[0022] Figure 4 Schematic diagram of the structure of a cell unit in Embodiment 1 of the present invention;

[0023] Figure 5 Schematic diagram of the decomposition of the anti-vibration isolation wall in the first embodiment of the present invention;

[0024] Figure 6The arrangement form of the vibration-proof isolation wall in the battery module box in the first embodiment of the present invention;

[0025] Figure 7 Schematic diagram of the internal flow channel of the heat dissipation device in Embodiment 1 of the present invention;

[0026] Figure 8 This is a schematic structural diagram of a battery vibration-proof heat dissipation module in Embodiment 2 of the present invention;

[0027] Fig. 9 The arrangement form of the vibration-proof isolation wall in the battery module box in the second embodiment of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the heat dissipation device in the second embodiment of the present invention;

[0029] Fig.11 This is a schematic diagram of the arrangement of the liquid cooling plate sockets in the second embodiment of the present invention;

[0030] Fig.12 Schematic diagram of the cross-sectional structure of the liquid cooling plate according to the second embodiment of the present invention.

[0031] Explanation of the accompanying drawings: 1. battery module box; 101. inner wall of the box; 102. outer wall of the box; 2. battery module end cover; 3. heat dissipation device; 301. first medium flow channel; 302. first circulation inlet; 303. first circulation outlet; 304. heat conductive sheet; 305. grid-type radiator; 306. liquid cooling plate; 307. second medium flow channel; 308. liquid cooling plate socket; 4. vibration-proof structure; 401. first porous honeycomb layer; 401-1. polygonal end; 401-2. connector; 402. first armor layer; 5. battery slot; 6. vibration-proof isolation wall; 601. second porous honeycomb layer; 602. second armor layer; 603. thermally conductive silicone layer; 7. heat dissipation hole. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] Embodiment 1

[0034] like Figure 1 As shown, this embodiment discloses a battery vibration-proof heat dissipation module, including a battery module box 1 as a carrier, the battery module box 1 is a top-opening structure, a detachable battery module end cover 2 is provided on the top of the battery module box 1, and a heat dissipation device 3 is provided on the battery module end cover 2. The battery module end cover 2 is provided with bolt holes, which correspond to the bolt holes on the battery module box 1 one by one, and are connected by bolts.

[0035] The battery module box 1 includes an inner wall 101 and an outer wall 102, and a vibration-proof structure 4 is provided in the interlayer between the outer wall 102 and the inner wall 101. A plurality of battery slots 5 for placing batteries are provided in the inner wall 101, and adjacent battery slots 5 are isolated by vibration-proof isolation walls 6, which are used to absorb the energy generated by the relative movement between the battery slots 5.

[0036] like Figure 2 and 3 As shown, the vibration-proof structure 4 includes a first porous honeycomb layer 401 made of SMA metamaterial, and the first porous honeycomb layer 401 is coated with a first armor layer 402 made of metal. The vibration-proof structure 4 is installed on the battery module box 1 by bolts. Under the premise of ensuring a certain vibration-proof stability, the vibration-proof structure 4 can be replaced according to the battery safety level requirements and the working environment, and it is convenient for replacement after an accident.

[0037] The first porous honeycomb layer 401 simulates the cartilage fiber structure and has good vibration reduction properties. Specifically, Figure 4 As shown, the first porous honeycomb layer 401 is composed of a plurality of cell units, the cell unit includes two regular polygonal ends 401-1, the two polygonal ends 401-1 are arranged up and down, a plurality of connectors 401-2 are arranged between the two polygonal ends 401-1 according to a certain rule, and the end of each connector 401-2 is connected to the corresponding polygonal end 401-1. The cell unit can be produced using 3D printing technology.

[0038] The mechanical safety advantage of the first porous honeycomb layer 401 lies in that, thanks to the special cell structure of bionic design and 3D printing memory metal technology, the material used has the significant deformation ability and shape memory characteristics of SMA, the lightweight and deployable characteristics of origami metamaterials, and the special load-bearing capacity derived from biological microstructures. When subjected to compression or vibration loads, the metamaterial absorbs energy through the compression-torsion coupling deformation of the end face and the bending of the bending rod. At the same time, the cells of the SMA metamaterial simulating cartilage fibers are produced using 3D printing technology. A single cell has a large gap and has a natural heat dissipation advantage. By comprehensively designing the heat dissipation system and applying a variety of heat dissipation methods, the heat dissipation performance of the battery module can be effectively improved.

[0039] In this embodiment, the polygonal end 401-1 is a regular hexagon, starting from a certain point and going counterclockwise, it is a, b, c, d, e, f, g; the number of connectors 401-2 is 12. Two connectors 401-2 are drawn out from point a of the lower polygonal end 401-1, one of which extends upward to point g, and the other connector 401-2 extends upward to point f. The remaining connectors 401-2 are connected to the polygonal end 401-1 in sequence according to the above rules.

[0040] In this embodiment, the connector 401 - 2 is S-shaped.

[0041] like Figure 5 As shown, the vibration isolation wall 6 includes a second porous honeycomb layer 601 made of SMA metamaterial, the outer side of the second porous honeycomb layer 601 is coated with a second armor layer 602 made of metal material, and the outer side of the second armor layer 602 is coated with a thermal conductive silicone layer 603. The structure of the second porous honeycomb layer 601 is the same as that of the first porous honeycomb layer 401. The detailed structure of the second porous honeycomb layer 601 is not repeated here.

[0042] In this embodiment, the first armor layer 402 and the second armor layer 602 are both made of aluminum alloy.

[0043] like Figure 1 and 6 As shown, the battery slot 5 in this embodiment is suitable for cylindrical batteries. The vibration-proof isolation wall 6 is provided with two types of isolation walls, 6A and 6B. The 6A type of vibration-proof isolation wall is located around the battery slot 5 and is arranged in a regular hexagon, and is used to isolate the individual battery slots 5. The 6B type of vibration-proof isolation wall is located on the inner wall 101 of the box, and is used to isolate the battery slots 5 arranged together from the inner wall 101 of the box, and absorb the energy generated by the relative movement between the battery slots 5 and the box wall during the operation of the equipment. The box size is designed according to the thickness of the isolation wall and the battery size to maximize the space utilization efficiency.

[0044] The battery module box 1 in this embodiment is for cylindrical batteries, and its heat dissipation device 3 is as follows Figure 7 As shown, the heat dissipation device 3 includes a first medium flow channel 301 disposed inside the battery module end cover 2, and a first circulation inlet 302 and a first circulation outlet 303 communicated with the first medium flow channel 301. The first circulation inlet 302 and the first circulation outlet 303 are externally connected to a liquid container containing a high specific heat capacity liquid, and the high specific heat capacity liquid circulates in the first medium flow channel 301 through a pumping device. A thermal insulation material is laid near the first medium flow channel 301.

[0045] The temperature control method of the battery vibration-proof heat dissipation module is to monitor the temperature in real time through a temperature monitoring sensor arranged in the battery module box 1, and feed back an electrical signal to a controller, and the controller controls a pumping device to make a high specific heat capacity liquid circulate in the first medium flow channel 301 1.

[0046] The first medium flow channel 301 in this embodiment is a multi-channel parallel structure.

[0047] In this embodiment, the battery module box 1 is provided with heat dissipation holes 7 (both the inner wall 101 and the outer wall 102 of the box have heat dissipation holes 7), and the heat dissipation holes 7 are circular holes or grid-shaped holes. Figure 1 As shown, circular heat dissipation holes 7 are provided on the larger side of the battery module box 1, and grid-type heat dissipation holes 7 are provided on the smaller side.

[0048] Embodiment 2

[0049] like Figure 8 and 12 As shown, the battery slot 5 of the battery vibration-proof heat dissipation module in this embodiment is suitable for soft-pack batteries, wherein the vibration-proof isolation walls 6 have only one arrangement type. That is, the vibration-proof isolation walls 6 are arranged in sequence along the length direction in the area enclosed by the outer wall 102 of the box body, and the battery slot 5 is located between two vibration-proof isolation walls 6.

[0050] The specific structure of the vibration-proof isolation wall 6 in this embodiment is the same as that in the first embodiment, and will not be described again.

[0051] The battery module box 1 in this embodiment is for soft-pack batteries, and its heat dissipation device 3 is as follows Fig.10 As shown, the heat dissipation device 3 includes a heat conducting sheet 304 arranged at the bottom of the battery module end cover 2 and a liquid cooling plate 306 arranged at the bottom of the battery module box 1, and the upper end of the heat conducting sheet 304 is connected to a grid type heat sink 305. A second medium flow channel 307 is arranged in a serpentine shape inside the liquid cooling plate 306, and a cooling medium is passed through the second medium flow channel 307.

[0052] In this embodiment, a liquid cooling plate socket 308 is provided at the bottom of the side wall of the battery module housing 1 , and the liquid cooling plate 306 is inserted into the liquid cooling plate socket 308 .

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A battery vibration-proof heat dissipation module, characterized in that: The invention comprises a battery module box (1) as a carrier, the battery module box (1) being a top-opening structure, a detachable battery module end cover (2) being arranged on the top of the battery module box (1), and a heat dissipation device (3) being arranged on the battery module end cover (2); The battery module box (1) comprises an inner box wall (101) and an outer box wall (102), and a vibration-proof structure (4) is provided in the interlayer between the outer box wall (102) and the inner box wall (101); A plurality of battery slots (5) for placing batteries are provided in the inner wall (101) of the box body, and adjacent battery slots (5) are isolated by vibration-proof isolation walls (6).

2. The battery vibration-proof heat dissipation module according to claim 1, characterized in that: The anti-vibration structure (4) comprises a first porous honeycomb layer (401) made of SMA metamaterial, and the outer side of the first porous honeycomb layer (401) is coated with a first armor layer (402) made of metal material; The first porous honeycomb layer (401) is composed of a plurality of cell units, wherein the cell unit comprises two regular polygonal ends (401-1), the two polygonal ends (401-1) are arranged up and down, a plurality of connectors (401-2) are arranged between the two polygonal ends (401-1) in a certain regular arrangement, and an end of each connector (401-2) is connected to the corresponding polygonal end (401-1).

3. The battery vibration-proof heat dissipation module according to claim 2, characterized in that: The polygonal end (401-1) is a regular hexagon; the connector (401-2) is S-shaped, and the number of the connectors (401-2) is 12.

4. The battery vibration-proof heat dissipation module according to claim 2, characterized in that: The vibration-proof isolation wall (6) comprises a second porous honeycomb layer (601) made of SMA metamaterial, the outer side of the second porous honeycomb layer (601) is coated with a second armor layer (602) made of metal material, and the outer side of the second armor layer (602) is coated with a thermal conductive silicone layer (603).

5. The battery vibration-proof heat dissipation module according to claim 4, characterized in that: The structure of the second porous honeycomb layer (601) is the same as the structure of the first porous honeycomb layer (401).

6. The battery vibration-proof heat dissipation module according to claim 1, characterized in that: The heat dissipation device (3) comprises a first medium flow channel (301) arranged inside the battery module end cover (2), and a first circulation inlet (302) and a first circulation outlet (303) connected to the first medium flow channel (301).

7. The battery vibration-proof heat dissipation module according to claim 6, characterized in that: The battery module box (1) is provided with heat dissipation holes (7).

8. The battery vibration-proof heat dissipation module according to claim 7, characterized in that: The heat dissipation holes (7) are circular holes or grid-shaped holes.

9. The battery vibration-proof heat dissipation module according to claim 1, characterized in that: The heat dissipation device (3) comprises a heat conducting sheet (304) arranged at the bottom of the battery module end cover (2) and a liquid cooling plate (306) arranged on the battery module box (1); the upper end of the heat conducting sheet (304) is connected to a grid-type heat sink (305), and a second medium flow channel (307) is arranged in a serpentine shape inside the liquid cooling plate (306).

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