Battery module and electronic equipment

Abstract

The utility model provides a battery module and electronic equipment. The battery module comprises a bracket assembly and a plurality of battery cells, the support assembly comprises a plurality of supports, each support comprises a connecting part and a plurality of supporting parts arranged on one side of the connecting part, and the supporting parts are arranged at intervals in the extending direction of the connecting part. The plurality of battery cells are stacked in the thickness direction of the battery cells, and each battery cell is arranged between every two adjacent supporting parts, so that every two adjacent battery cells are arranged at intervals. According to the battery module provided by the invention, the battery cells are separated by a certain gap, so that air can pass through the gap between the battery cells to take away heat on the surfaces of the battery cells, and the temperature of the battery cells cannot be quickly increased, so that the temperature of the battery module during high-rate discharge is reduced, the damage of high temperature to the battery is reduced, and the aging of the battery is delayed.

Description

Technical Field

[0001] The present application belongs to the field of heat dissipation technology, and specifically relates to battery modules and electronic equipment. Background Art

[0002] Drones have become more and more popular with users in recent years due to their convenient operation. Drones need to discharge at a high rate during flight, so they need to be powered by a battery pack with multiple cells connected. However, a battery pack formed by stacking multiple cells will generate a lot of heat during the flight of the drone. The heat inside the cell cannot be conducted out in time, resulting in excessive battery temperature, which affects battery performance. At present, heat dissipation is often achieved by adding thermal conductive silicone and aluminum plates between the cells, but the heat dissipation effect is not ideal and cannot effectively solve the problem of excessively high discharge temperature at high rates. Utility Model Content

[0003] In view of this, the first aspect of the present application provides a battery module, the battery module comprising:

[0004] A bracket assembly, comprising a plurality of brackets, each of the brackets comprising a connecting portion and a plurality of supporting portions arranged on one side of the connecting portion, wherein the plurality of supporting portions are arranged at intervals along an extending direction of the connecting portion;

[0005] A plurality of battery cells are stacked along the thickness direction thereof, and each of the battery cells is installed between two adjacent support parts so that a gap is provided between two adjacent battery cells.

[0006] In the battery module provided in the first aspect of the present application, the battery cells are installed by means of a bracket. When the battery cells are installed on the support portion, since the support portion itself has a thickness, there is a certain gap between adjacent battery cells. The existence of the gap allows air to pass through the gaps between the battery cells, quickly taking away the heat generated by the battery cells under high-rate discharge, thereby preventing the battery cells from heating up quickly, thereby reducing the operating temperature of the battery module during high-rate discharge.

[0007] In summary, the battery module provided in the present application separates the battery cells by a certain gap, allowing air to pass through the gap between the battery cells and take away the heat on the surface of the battery cells, so that the battery cells will not heat up quickly, thereby reducing the temperature of the battery module during high-rate discharge, reducing the damage to the battery caused by high temperature, and delaying battery aging.

[0008] Among them, each of the battery cells includes a main body and a pole piece arranged at one end of the main body, the bracket assembly includes a first bracket group, the first bracket group is arranged at one end of the main body away from the pole piece, the first bracket group includes two brackets, and the two brackets are arranged on opposite sides of one end of the main body away from the pole piece.

[0009] Among them, the main body includes a middle part, and a first part and a second part arranged on opposite sides of the middle part, the first bracket group is arranged on the first part, the pole piece is arranged on the second part, the bracket assembly also includes a second bracket group, the second bracket group is arranged on the first part or the second part, the second bracket group includes two brackets, the two brackets are arranged on opposite sides of the first part, or the two brackets are arranged on opposite sides of the second part.

[0010] Wherein, the second bracket group is arranged on the second part, and the distance between the second bracket group and the pole piece is 20%-30% of the length of the main body.

[0011] Wherein, the battery module further includes a converter, and the converter connects the plurality of pole pieces in the plurality of battery cells.

[0012] Among them, the multiple battery cells include a first battery cell and a second battery cell that are relatively arranged along their thickness direction, and the multiple support parts include a first support part and a second support part that are relatively arranged along the extension direction of the connecting part. The first support part is arranged on the side of the first battery cell away from the second battery cell, and the second support part is arranged on the side of the second battery cell away from the first battery cell.

[0013] Wherein, the battery module further includes a connector, which connects the plurality of battery cells to a bracket along a thickness direction of the plurality of battery cells, and the connector is disposed on the bracket.

[0014] Wherein, the bracket comprises a plastic bracket.

[0015] A second aspect of the present application provides an electronic device, comprising a housing and a battery module as provided in the first aspect of the present application, wherein the battery module is disposed in the housing.

[0016] The electronic device provided in the second aspect of the present application, by adopting the battery module provided in the first aspect of the present application, reduces the battery temperature when the electronic device is working, reduces the damage to the battery caused by high temperature, and delays battery aging.

[0017] Wherein, the shell has an air inlet and an air outlet which communicate with the gap between two adjacent battery cells in the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0019] Figure 1 Schematic diagram of the three-dimensional structure of a battery module in one embodiment of the present application.

[0020] Figure 2 is Figure 1 the front view of the battery module shown in the figure.

[0021] Figure 3 is Figure 1 the exploded view of the battery module shown in the figure.

[0022] Figure 4 is Figure 1 the schematic perspective view of the bracket in the battery module shown in the figure.

[0023] Figure 5 is Figure 4 the front view of the bracket shown in the figure.

[0024] Figure 6 is Figure 1 the top view of the battery module shown in the figure.

[0025] Figure 7 is Figure 1 the schematic perspective view of the battery module from another perspective shown in the figure.

[0026] Figure 8 is Figure 1 the side view of the battery module shown in the figure.

[0027] Figure 9 This is the schematic perspective view of the battery module in another embodiment of the present application.

[0028] Figure 10 This is the schematic perspective view of the electronic device in one embodiment of the present application.

[0029] Figure 11 is Figure 10 the cross-sectional schematic view of the electronic device shown in the figure.

[0030] Reference numeral description:

[0031] Battery module - 1, Electronic device - 2, Housing - 3, Bracket assembly - 10, Bracket - 11, Support part - 110, Connection part - 120, Spacing - 130, First support part - 111, Second support part - 112, First bracket group - 12, Second bracket group - 13, Battery cell - 20, Gap - 200, Body - 21, Electrode tab - 22, Intermediate part - 210, First part - 211, Second part - 212, First battery cell - 23, Second battery cell - 24, Adapter - 30, Air inlet hole - 300, Air outlet hole - 310, Connecting piece - 40. Detailed implementation manners

[0032] The following are the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

[0033] Before introducing the technical solutions provided by the present application, the technical problems in the related art will be introduced in detail.

[0034] In recent years, drones have been favored by more and more users because of their simple operation and low usage threshold. During the flight of a drone, due to relatively high power consumption, high-rate discharge of the battery is often required during operation to deliver a larger current. Therefore, a battery pack connected by multiple battery cells needs to be used. However, for the battery pack formed by stacking multiple battery cells, a large amount of heat will be generated during the flight of the drone, and the heat inside the battery cells cannot be conducted out in time, resulting in too high battery temperature and affecting battery performance.

[0035] In the current related art, the commonly used solutions for battery modules are simple stacking of battery cells or adding heat-conducting materials such as thermal silicone and aluminum plates between the battery cells to conduct the heat inside the stacked battery cells to the outer shell for heat dissipation. However, the heat dissipation efficiency in the related art is slow and the effect is poor, and the problem of too high temperature of the battery module during high-rate discharge cannot be effectively solved, which makes the drone prone to overheat and forced landing during flight and also affects the service life of the drone battery.

[0036] In view of this, to solve the above problems, the present application provides a battery module. Please refer to Figures 1-5 , Figure 1 which is a three-dimensional structural schematic diagram of the battery module in an embodiment of the present application. Figure 2 is Figure 1 the front view of the battery module shown. Figure 3 is Figure 1 the exploded view of the battery module shown. Figure 4 is Figure 1 the three-dimensional structural schematic diagram of the bracket in the battery module shown. Figure 5 is Figure 4 the front view of the bracket shown.

[0037] The battery module 1 provided in this embodiment includes a bracket assembly 10 and a plurality of battery cells 20. The bracket assembly 10 includes a plurality of brackets 11, each bracket 11 includes a connecting portion 120, and a plurality of supporting portions 110 provided on one side of the connecting portion 120, and the plurality of supporting portions 110 are spaced apart along the extending direction of the connecting portion 120. The plurality of battery cells 20 are stacked along their thickness directions, and each battery cell 20 is disposed between two adjacent supporting portions 110, so that two adjacent battery cells 20 are spaced apart.

[0038] The battery module 1 provided by this embodiment is mainly applied to power various electronic devices 2. The battery module 1 is electrically connected to the internal circuit of the electronic device 2, so that the electronic device 2 can realize relevant electronic functions.

[0039] The battery module 1 mainly includes a bracket assembly 10 and a plurality of battery cells 20. The battery module 1 provided by this embodiment is composed of a plurality of battery cells 20. The structure, shape, and size of each battery cell 20 can be the same or different. The plurality of battery cells 20 are stacked along the thickness direction of the battery cell 20 (as shown by the D direction in Figure 1 ), making the battery module 1 more compact.

[0040] The bracket assembly 10 is an assembly structure composed of a plurality of brackets 11. In other words, the bracket assembly 10 is the general term for all the brackets 11 of the battery module 1. The bracket 11 is mainly used to install the plurality of battery cells 20 together. The bracket 11 includes a connecting portion 120 and a plurality of supporting portions 110. The connecting portion 120 is in the shape of a long plate, and the supporting portion 110 is in the shape of a short plate. The plurality of supporting portions 110 can be arranged on the connecting portion 120, so that the connecting portion 120 provides a mounting basis for the supporting portions 110, avoiding the random movement of the supporting portions 110 and improving the stability of the supporting portions 110. The plurality of supporting portions 110 are all arranged and disposed on the same side of the connecting portion 120, and the plurality of supporting portions 110 are spaced apart along the extension direction, i.e., the length direction, of the connecting portion 120 (as shown by the D direction in Figure 1 ), that is, there is a gap 200 between two adjacent supporting portions 110 that can be used to install the battery cell 20. Optionally, the gap 200 between two adjacent supporting portions 110 is equal to the thickness of the battery cell 20.

[0041] Based on the above structure of the bracket 11, each battery cell 20 can be inserted into the interval 130 between two adjacent supporting portions 110. At this time, there will be a gap between two adjacent battery cells 20 due to the existence of the supporting portions 110. That is to say, when a plurality of battery cells 20 are installed on the bracket 11, due to the thickness of the supporting portions 110, there will be a supporting portion 110 separating two adjacent battery cells 20, and thus a certain gap 200 is formed between two adjacent battery cells 20. Optionally, when the gap 200 between two adjacent supporting portions 110 is equal to the thickness of the battery cell 20, the gap 200 between two adjacent battery cells 20 is the thickness of the supporting portion 110.

[0042] In summary, in the related art, the heat dissipation method of the battery module 1 by adding thermal conductive glue or aluminum plates between the battery cells 20 has low heat dissipation efficiency and poor effect. However, in the heat dissipation method of the battery module of the present embodiment, the adjacent two battery cells 20 are separated by the support portion 110, so that a certain gap 200 is formed between the adjacent two battery cells 20. In this way, air can pass through the gap 200 between the battery cells 20, and the flowing air can quickly take away the heat generated by the battery cells 20 during high-rate discharge, without staying on the battery cells 20 and causing the rapid temperature rise of the battery cells 20, thereby reducing the operating temperature of the battery module 1 during high-rate discharge. For example, in the field of unmanned aerial vehicles, compared with the battery module in the related art, the operating temperature of the battery module 1 in the present embodiment is about 10 degrees lower than that of the battery module in the related art.

[0043] Please refer to Figure 1 、 Figure 6 , Figure 6 is Figure 1 a top view of the battery module shown. In the present embodiment, each of the battery cells 20 includes a body 21 and a pole piece 22 provided at one end of the body 21. The bracket assembly 10 includes a first bracket group 12. The first bracket group 12 is disposed at an end of the body 21 away from the pole piece 22. The first bracket group 12 includes two brackets 11, and the two brackets 11 are disposed on opposite sides of the body 21.

[0044] In the present embodiment, the battery cell 20 can be divided into a body 21 and a pole piece 22 provided at one end of the battery cell 20. The body 21 is the part of a single battery cell 20 after removing the pole piece 22 at one end of the battery cell 20, that is, the overall structure of the battery cell 20 after removing the pole piece 22. For example, the body 21 includes a positive electrode, a negative electrode, a separator, an electrolyte, etc. The pole piece 22 is provided at one end of the battery cell 20 for subsequent electrical connection to a circuit board or other components.

[0045] The bracket assembly 10 may include a first bracket group 12, and of course may also include a second bracket group 13, a third bracket group, etc. Each bracket group is used to install a plurality of battery cells 20 and make a certain gap 200 between adjacent battery cells 20, so as to facilitate the flowing air to pass through the gap 200 between adjacent battery cells 20 and take away the heat on the surface of the battery cells 20, reducing the temperature of the battery cells 20. The first bracket group 12 has two brackets 11, which are respectively disposed on Figure 1 the left and right sides of the battery cell 20 as shown in

[0046] The first bracket group 12 can be installed at one end of the body 21 away from the pole piece 22. In other words, the pole piece 22 is arranged at the head end of the body 21, and the first bracket group 12 is installed at the tail end of the body 21. The combination of the two brackets 11 enables a bracket 11 to be provided on each side of the battery cell 20, and both sides of the battery cell 20 have support parts 110 for separating the battery cells 20 by a certain gap 200. This arrangement makes the gaps 200 on both sides of the battery cell 20 have the same width, and there will not be a situation where the gap on one side is large and the gap on the other side is small, which facilitates air to flow through the gap 200 and take away the heat on the surface of the battery cell 20. At the same time, both sides of the battery cell 20 are installed in the gaps 200 of the adjacent support parts 110 in the brackets 11 on both sides, so that both sides of the battery cell 20 are fixed by the brackets 11, so that the battery cell 20 will not shake up and down, which limits the range of the battery cell 20 and plays a certain role in limiting the position.

[0047] Please refer to Figures 7-8 , Figure 7 for Figure 1 The three-dimensional structure diagram of the battery module from another perspective is shown. Figure 8 for Figure 1 Side view of the battery module shown. In this embodiment, the battery module 1 also includes an adapter 30, and the adapter 30 connects the multiple pole pieces 22 in the multiple battery cells 20. The adapter 30 is a component that connects the multiple pole pieces 22, and is used to electrically connect all the pole pieces 22 together to form a whole, so as to facilitate the connection to the external circuit for power supply. The adapter 30 is rectangular in shape and is provided with a plurality of through holes slightly larger than the width of the pole pieces 22. When in use, the multiple pole pieces 22 are fixed to the adapter 30, and then the pole pieces 22 of the multiple battery cells 20 are gathered together, which simplifies the layout of the wire circuit. The external circuit only needs to connect the adapter 30 to electrically connect to the multiple battery cells 20 at the same time, so as to facilitate the connection of the battery module to the circuit of the electronic device 2 that needs to be powered by the battery module 1.

[0048] At the same time, because the adapter 30 is a component with a fixed shape and all the pole pieces 22 are fixed on the adapter 30, the adapter 30 also has a certain supporting effect on the battery cell 20. A certain gap 200 can be formed between the ends of the adjacent battery cells 20 close to the pole pieces 22 to facilitate the flow of air through the gap 200 of the battery cells 20 and take away the heat from the surface of the battery cells 20.

[0049] In summary, in this embodiment, the first bracket group 12 cooperates with the adapter 30 to support and separate the two opposite ends of the battery cell 20, namely the head end and the tail end, further improving the separation effect so that a gap 200 can be formed anywhere between two adjacent battery cells 20.

[0050] Optionally, the topmost pole piece 22 is connected to the adapter by bending downward, and the bottommost pole piece 22 is connected to the adapter by bending upward. This operation reduces the length of the adapter 30, reduces the weight of the adapter 30, and reduces the overall weight of the battery module 1.

[0051] Please refer again Figure 6 In this embodiment, the main body 21 includes a middle part 210, and a first part 211 and a second part 212 arranged on opposite sides of the middle part 210, the pole piece 22 is arranged on the second part 212, the first bracket group 12 is arranged on the first part 211, and the bracket assembly 10 also includes a second bracket group 13, the second bracket group 13 is arranged on the first part 211 or the second part 212, the second bracket group 13 includes two brackets 11, the two brackets 11 are arranged on opposite sides of the first part 211, or the two brackets 11 are arranged on opposite sides of the second part 212.

[0052] In this embodiment, the body 21 of the battery cell 20 is divided into three parts, namely, the middle part 210 located in the middle of the body 21, and the first part 211 and the second part 212 located on the left and right sides of the middle part 210. In other words, along the length direction of the body 21 from one side to the other side, there are the first part 211, the middle part 210, and the second part 212. In this embodiment, the first part 211 is provided with the first bracket group 12, and the second part 212 is provided with the pole piece 22, which can also be understood as Figure 6 The left portion shown is the first portion 211 , and the right portion is the second portion 212 .

[0053] The second bracket group 13 has two brackets 11, which are respectively arranged at Figure 1 The left and right sides of the middle battery cell 20. And the second bracket group 13 is arranged on the opposite sides of the first part 211 or the second part 212 of the battery cell 20, that is, the second bracket group 13 is not arranged on both sides of the middle part 210 of the battery cell 20. The battery cell 20 is divided into three parts, which is convenient for determining the specific position of the bracket 11 and the positional relationship between the bracket 11 and the battery cell 20. The combined use of two brackets 11 in the same bracket group has been described in detail above in this application, and this embodiment will not be repeated here.

[0054] The combined use of the first support group 12 and the second support group 13 enables there to be a gap 200 between the four supports 11 on the side of the battery cell 20 that jointly support the battery cell 20, making the gap 200 between the battery cells 20 more uniform, facilitating air to flow through the gap 200 between the battery cells 20, taking away the heat on the surface of the battery cell 20, and reducing the surface temperature of the battery cell 20. At the same time, by arranging the second support group 13 on the first part 211 or the second part 212 instead of on the middle part 210, it is avoided that the second support group 13 blocks the middle part 210 where the heat generation is relatively serious, making the air circulation at the position of the middle part 210 smoother and facilitating the removal of the heat of the middle part 210.

[0055] Please refer to again Figure 6 , in this embodiment, the second support group 13 is arranged on the second part 212, and the distance between the second support group 13 and the pole piece 22 is 20%-30% of the length of the body 21.

[0056] In this embodiment, the second support group 13 can be arranged on the second part 212 of the battery cell 20 close to the pole piece 22. Because although the adapter 30 has a certain supporting effect, the main use of the adapter 30 is to connect and fix the pole piece 22, and the supporting effect is only an auxiliary effect with relatively weak supporting ability, resulting in poor supporting force on the side of the body 21 close to the pole piece 22. Therefore, in this embodiment, the second support group 13 is arranged on the second part 212, in other words, at a position closer to the pole piece 22, to supplement the support on the side of the pole piece 22.

[0057] Specifically, the second support group 13 is arranged at a position where the distance from the pole piece 22 is 20%-30% of the length of the body 21. When the distance between the second support group 13 and the pole piece 22 is less than 20% of the body 21, the second support group 13 is too close to the pole piece 22, which is not convenient for the installation of the second support group 13. At the same time, the middle part of the battery cell 20 lacks support, making the gap 200 in the middle part of the battery cell 20 smaller than the gap 200 at the position of the battery cell 20 close to the support 11, that is, the battery cell 20 is prone to bend at the middle position under the action of gravity. When the distance between the second support group 13 and the pole piece 22 is greater than 30% of the body 21, the second support group 13 is too close to the middle position of the battery cell body 21, blocking the gaps 200 on both sides of the middle position of the battery cell 20 and affecting the heat dissipation of the middle part where the heat generation is relatively serious. Therefore, in this embodiment, the second support group 13 is arranged at a position where the distance from the pole piece 22 is 20%-30% of the length of the body 21. Specifically, the distance between the second support group 13 and the pole piece 22 is 25% of the length of the body 21.

[0058] Please refer to again Figure 2, in the present embodiment, the plurality of the battery cells 20 include a first battery cell 23 and a second battery cell 24 that are oppositely arranged along their thickness directions, and the plurality of the support portions 110 include a first support portion 111 and a second support portion 112 that are oppositely arranged along the extending direction of the connecting portion 120. The first support portion 111 is disposed on a side of the first battery cell 23 facing away from the second battery cell 24, and the second support portion 112 is disposed on a side of the second battery cell 24 facing away from the first battery cell 23.

[0059] In the present embodiment, the battery cell 20 includes, along the thickness direction, a first battery cell 23 disposed on the uppermost layer and a second battery cell 24 disposed on the lowermost layer. At the same time, the support portion 110 also has a first support portion 111 disposed on the uppermost layer and a second support portion 112 disposed on the lowermost layer along the connecting portion 120. The first support portion 111 is disposed on a surface of the first battery cell 23 facing away from the second battery cell 24, that is, the upper surface of the first battery cell 23 as shown in Figure 2 , and the second support portion 112 is disposed on a surface of the second battery cell 24 facing away from the first battery cell 23, that is, the lower surface of the second battery cell 24 as shown in Figure 2 . By disposing the support portion 110 above the uppermost battery cell 20 and below the lowermost battery cell 20, both the upper and lower surfaces of the uppermost first battery cell 23 and the upper and lower surfaces of the lowermost second battery cell 24 are clamped and supported by the support portion 110. Each battery cell 20 is clamped and fixed by the bracket 11, improving the stability of the upper and lower two battery cells 20, making the battery module 1 a whole, facilitating the subsequent assembly and fixation. Optionally, the assembly direction of the battery module 1 is the thickness direction of the battery cell 20.

[0060] Please refer to Figure 9 , Figure 9 which is a schematic three-dimensional structure diagram of the battery module in another embodiment of the present application. In the present embodiment, the battery module 1 further includes a connecting member 40. The connecting member 40 connects the plurality of the battery cells 20 and the bracket 11 along the thickness direction of the plurality of the battery cells 20, and the connecting member 40 is disposed on the bracket 11.

[0061] In the present embodiment, the battery module 1 further includes a connecting member 40. The connecting member 40 is disposed along the thickness direction of the battery cell 20 and can be disposed at the position of the bracket 11 for assembling and fixing the entire battery module 1. By the connecting member 40, all the battery cells 20 and the bracket 11 are fixed as a whole, facilitating the subsequent handling and installation of the battery module 1. The connecting member 40 extends around the battery cell 20 at least once along the extending direction of the bracket 11 in the length direction. The brackets 11 on both sides of the battery cell 20 are wound together with the battery cell 20, ensuring that the battery cell 20 and the bracket 11 do not become loose or fall off during use.

[0062] Meanwhile, the connecting member 40 is disposed at the position of the bracket 11 and has the same width as the bracket 11, minimizing the influence of the connecting member 40 on the area of the side gap 200 of the battery cell 20, thereby reducing the influence of the connecting member 40 on the flowing air between the battery cells 20 and facilitating the flowing air to take away the heat on the surface of the battery cell 20. Optionally, the connecting member 40 is a tape.

[0063] In this embodiment, the bracket 11 includes a plastic bracket 11. The material of the bracket 11 of the battery module 1 in this embodiment can be a plastic bracket 11. In other words, the key point of protection in this embodiment is still the bracket 11, but this bracket 11 is made of plastic material. Optionally, due to the requirements of the drone for lightweight and high strength, a mixture of low-density polycarbonate and polyacrylonitrile materials, that is, PC + ABS materials, is used on the premise of ensuring strength. Compared with the heat dissipation materials such as thermal conductive silica gel, thermal conductive silicone grease, aluminum sheets, and copper sheets used in the related art, in the battery module 1 of the same size, the density of the plastic bracket 11 material used in this method is smaller and the amount of the material used is less. That is to say, the plastic bracket 11 adopted in this embodiment not only solves the heat dissipation problem, but also reduces the overall weight of the battery module 1, facilitating the use of some small devices and ensuring the lightweight requirements for flight.

[0064] Please refer to Figure 10 , Figure 10 which is a schematic three-dimensional structure diagram of an electronic device in an embodiment of the present application. This embodiment also provides an electronic device 2, which includes a housing 3 and a battery module 1 provided as in the above embodiment of the present application, and the battery module 1 is installed in the housing 3.

[0065] The electronic device 2 provided in this embodiment includes, but is not limited to, mobile phones, tablets, automobiles, drones, etc. As long as the electronic device 2 that requires the battery module 1 is the electronic device 2 referred to in this embodiment, the present application only uses a drone for illustrative purposes.

[0066] The drone includes a housing 3 and a battery module 1. The battery module 1 can be disposed in the housing 3 to protect the battery module 1 by using the housing 3, and the housing 3 can also provide installation and protection for other components. When the drone needs to be powered, the battery module 1 can be electrically connected to the circuit system of the drone to complete a series of flight actions.

[0067] Specifically, when the drone is flying, the airflow generated by the flight passes through the drone housing 3 and enters the battery module 1. The flowing airflow passes through the gaps 200 between the battery cells 20 and then flows out from the housing 3, taking away the heat on the surface of the battery cells 20 and reducing the overall temperature of the battery module 1.

[0068] Please refer to Figure 11 , Figure 11 For Figure 10Cross-sectional schematic diagram of the electronic device shown. In this embodiment, the housing 3 has an air inlet hole 300 and an air outlet hole 310 that communicate with the gap 200 between two adjacent battery cells 20 in the battery module 1. That is to say, in this embodiment, two holes can be formed in the housing 3, one hole is the air inlet hole 300, and the other hole is the air outlet hole 310. When the electronic device 2, such as a drone, is working, external air enters the gap 200 between the battery cells 20 of the battery module 1 from the air inlet hole 300, and then flows out from the air outlet hole 310. Therefore, the setting of the air inlet hole 300 facilitates the entry of external air into the gap 200 between the battery cells 20 in the battery module 1, and the setting of the air outlet hole 310 facilitates the air between the battery cells 20 of the battery module 1 to flow out to the outside of the housing.

[0069] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0070] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0071] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0072] The above has introduced in detail the content provided by the embodiments of the present application, expounded and explained the principle and embodiments of the present application. These explanations are only used to help understand the method and its core idea of the present application. However, the content of this specification should not be construed as a limitation to the present application. Those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. These modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies.

Claims

1. A battery module, characterized in that: The battery module comprises: A bracket assembly, comprising a plurality of brackets, each of the brackets comprising a connecting portion and a plurality of supporting portions arranged on one side of the connecting portion, wherein the plurality of supporting portions are arranged at intervals along an extending direction of the connecting portion; A plurality of battery cells are stacked along the thickness direction thereof, and each of the battery cells is installed between two adjacent support parts so that a gap is provided between two adjacent battery cells.

2. The battery module according to claim 1, characterized in that: Each of the battery cells includes a body and a pole piece arranged at one end of the body, the bracket assembly includes a first bracket group, the first bracket group is arranged at one end of the body away from the pole piece, the first bracket group includes two brackets, and the two brackets are arranged on opposite sides of one end of the body away from the pole piece.

3. The battery module according to claim 2, characterized in that: The main body includes a middle part, and a first part and a second part arranged on opposite sides of the middle part, the first bracket group is arranged on the first part, and the pole piece is arranged on the second part. The bracket assembly also includes a second bracket group, and the second bracket group is arranged on the first part or the second part. The second bracket group includes two brackets, and the two brackets are arranged on opposite sides of the first part, or the two brackets are arranged on opposite sides of the second part.

4. The battery module according to claim 3, characterized in that: The second bracket assembly is arranged on the second part, and the distance between the second bracket assembly and the pole piece is 20%-30% of the length of the body.

5. The battery module according to claim 2, characterized in that: The battery module also includes a converter, which connects multiple pole pieces in multiple battery cells.

6. The battery module according to claim 1, characterized in that: The multiple battery cells include a first battery cell and a second battery cell that are relatively arranged along their thickness direction, and the multiple support parts include a first support part and a second support part that are relatively arranged along the extension direction of the connecting part. The first support part is arranged on a side of the first battery cell that is away from the second battery cell, and the second support part is arranged on a side of the second battery cell that is away from the first battery cell.

7. The battery module according to claim 1, characterized in that: The battery module further includes a connector, which connects the plurality of battery cells to a bracket along a thickness direction of the plurality of battery cells, and the connector is disposed on the bracket.

8. The battery module according to claim 1, characterized in that: The bracket comprises a plastic bracket.

9. An electronic device, characterized in that: The electronic device comprises a housing and a battery module as claimed in any one of claims 1 to 8, wherein the battery module is arranged in the housing.

10. The electronic device according to claim 9, characterized in that: The shell has an air inlet and an air outlet communicating with the gap between two adjacent battery cells in the battery module.

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