Battery module, battery pack, thermal management system and electric equipment

Abstract

The utility model discloses a battery module, a battery pack, a thermal management system and electric equipment. The battery module comprises a plurality of single batteries, a battery pack and a battery pack, the elastic heat conduction piece extends in the circumferential direction of the single batteries, at least part of the elastic heat conduction piece is located between every two adjacent single batteries, and a cooling cavity for containing a cooling medium is formed in the elastic heat conduction piece; and the temperature adjusting device is selectively communicated with the cooling cavity so as to supplement a cooling medium into the cooling cavity and / or absorb the cooling medium in the cooling cavity. According to the battery module disclosed by the embodiment of the utility model, the elastic heat conduction pieces can insulate and isolate the single batteries, dissipate heat and cool the single batteries, and can reduce friction and vibration among the single batteries, and meanwhile, the cooling effect of the battery module is better.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module, a battery pack, a thermal management system and an electrical equipment. Background Art

[0002] In the related art, a battery module usually has a plurality of single cells, and the plurality of single cells are insulated from each other by a PET (Polyethylene terephthalate) film. However, due to the stacking of a plurality of single cells, the heat generated by the plurality of single cells during charging and discharging cannot be quickly conducted out, the heat dissipation effect between the battery modules is poor, and the temperature accumulation between the battery modules is too high, thereby shortening the cycle service life of the battery module and attenuating the power performance. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a battery module, in which an elastic heat-conducting member of the battery module can insulate and isolate single cells, dissipate heat and lower the temperature, reduce the friction and vibration between single cells, and improve the cooling effect of the battery module.

[0004] The utility model also provides a battery pack having the above battery module.

[0005] The utility model also provides a thermal management system having the above battery pack.

[0006] The utility model also provides an electrical equipment having the above battery pack or thermal management system.

[0007] To achieve the above object, according to a first aspect embodiment of the utility model, a battery module is provided, including: a plurality of single cells; an elastic heat-conducting member extending along the circumferential direction of the single cells, at least part of the elastic heat-conducting member being located between two adjacent single cells, and a cooling cavity for accommodating a cooling medium being provided in the elastic heat-conducting member; and a temperature regulating device selectively communicating with the cooling cavity to supplement the cooling medium into the cooling cavity and / or absorb the cooling medium in the cooling cavity.

[0008] The elastic heat-conducting member of the battery module according to the embodiment of the utility model can insulate and isolate single cells, dissipate heat and lower the temperature, reduce the friction and vibration between single cells, and improve the cooling effect of the battery module.

[0009] According to some embodiments of the present utility model, the temperature regulating device includes: a cooling medium storage, which is used for storing a cooling medium; a first on-off valve, which is respectively connected to the cooling medium storage and the cooling chamber to control the on-off between the cooling medium storage and the cooling chamber.

[0010] According to some embodiments of the present utility model, the temperature regulating device further includes: a flow control unit, which is connected between the cooling medium storage and the first on-off valve to regulate the flow rate of the cooling medium flowing from the cooling medium storage to the cooling chamber.

[0011] According to some embodiments of the present utility model, the temperature regulating device further includes: a second on-off valve, which is connected between the cooling medium storage and the flow control unit to control the on-off between the cooling medium storage and the flow control unit.

[0012] According to some embodiments of the present utility model, the cooling medium storage is arranged above the second on-off valve and higher than the flow control unit.

[0013] According to some embodiments of the present utility model, the temperature regulating device further includes: a pressure monitoring unit, which is connected to the first on-off valve, and the first on-off valve controls the on-off between the pressure monitoring unit and the cooling chamber.

[0014] According to some embodiments of the present utility model, the elastic heat conducting member includes: a first sheet; a second sheet, the edge of the first sheet and the edge of the second sheet are connected and sealed to construct the cooling chamber between the first sheet and the second sheet; wherein, at least one of the first sheet and the second sheet is configured with a connection port, and the connection port is connected to the temperature regulating device.

[0015] According to some embodiments of the present utility model, the elastic heat conducting member includes: a plurality of heat conducting parts, the plurality of heat conducting parts are arranged at intervals and two adjacent heat conducting parts are arranged on opposite sides of the single cell, the heat conducting part has a first end and a second end; a plurality of connecting parts, the connecting parts are respectively connected to two adjacent heat conducting parts, and the plurality of connecting parts are alternately arranged at the first end and the second end; wherein, the cooling chamber is configured in both the heat conducting part and the connecting part.

[0016] According to some embodiments of the present utility model, the area of the heat conducting part is larger than the area of the connecting part.

[0017] According to some embodiments of the present utility model, along the direction perpendicular to the first end towards the second end, the size of the heat conducting part is not less than the size of the connecting part.

[0018] According to a second aspect embodiment of the present utility model, a battery pack is provided. The battery pack includes: a housing; and a battery module according to the first aspect embodiment of the present utility model, where the battery module is disposed within the housing.

[0019] For the battery pack according to the second aspect embodiment of the present utility model, by using the battery module according to the first aspect embodiment of the present utility model, the elastic heat conducting member of the battery module can insulate and isolate the single cells, dissipate heat and cool down, and can reduce the friction and vibration between the single cells. At the same time, the cooling effect of the battery module is better, the heat dissipation and cooling effect of the battery pack is better, which can more effectively avoid the overheating of the battery pack and has higher safety.

[0020] According to a third aspect embodiment of the present utility model, a thermal management system is provided. The thermal management system includes the battery pack according to the second aspect embodiment of the present utility model.

[0021] For the thermal management system according to the third aspect embodiment of the present utility model, by using the battery pack according to the second aspect embodiment of the present utility model, the service life of the battery pack is longer, and it has advantages such as good cooling effect and high safety.

[0022] According to a fourth aspect embodiment of the present utility model, an electrical device is provided. The electrical device includes the thermal management system according to the third aspect embodiment of the present utility model.

[0023] According to a fourth aspect embodiment of the present utility model, an electrical device, by using the thermal management system according to the third aspect embodiment of the present utility model, has advantages such as good cooling effect and high safety.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0026] Figure 1 is a schematic structural diagram of a battery module according to an embodiment of the present utility model;

[0027] Figure 2 is another perspective structural diagram of the battery module according to an embodiment of the present utility model;

[0028] Figure 3 is yet another perspective structural diagram of the battery module according to an embodiment of the present utility model;

[0029] Figure 4 is a schematic structural diagram of a temperature regulating device and an elastic heat conducting member according to an embodiment of the present utility model;

[0030] Figure 5 is a schematic structural diagram of a plurality of single cells according to an embodiment of the present utility model;

[0031] Figure 6 is a top view of a battery module structure according to an embodiment of the present utility model.

[0032] Reference numerals:

[0033] 1, battery module;

[0034] 100, single cell;

[0035] 200, elastic heat conducting member; 210, connection port; 220, heat conducting portion; 221, first end; 222, second end; 230, connection portion;

[0036] 300, temperature regulating device; 310, cooling medium storage; 320, first on-off valve; 330, flow control unit; 340, air pressure monitoring unit. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0039] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0040] In the description of the present utility model, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more.

[0041] The battery module 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0042] As Figures 1-6 shown, the battery module 1 according to an embodiment of the present invention includes a plurality of single cells 100, an elastic heat-conducting member 200, and a temperature regulating device 300.

[0043] The elastic heat-conducting member 200 extends along the circumferential direction of the single cell 100, and at least a part of the elastic heat-conducting member 200 is located between two adjacent single cells 100. A cooling cavity for accommodating a cooling medium is provided in the elastic heat-conducting member 200. The temperature regulating device 300 is selectively communicated with the cooling cavity to supplement the cooling medium into the cooling cavity and / or absorb the cooling medium in the cooling cavity.

[0044] Wherein, the length direction in the accompanying drawings is the length direction of the battery module 1, the width direction is the width direction of the battery module 1, and the height direction is the height direction of the battery module 1 (i.e., the up-and-down direction).

[0045] For example, the elastic heat-conducting member 200 can be made of a material with good insulation, resilience toughness, and heat conductivity. For example, the elastic heat-conducting member 200 can be elastic heat-conducting insulating silica gel to protect and dissipate heat from the single cell 100.

[0046] Wherein, the cooling medium can be a liquid cooling medium or a gaseous cooling medium.

[0047] Wherein, the temperature regulating device 300 in the embodiment of the present invention is a constant temperature and constant pressure device. The battery module 1 can maintain the stability of the temperature and pressure of the cooling medium in the cooling cavity of the elastic heat-conducting member 200 through the temperature regulating device 300.

[0048] In the battery module 1 according to an embodiment of the present invention, by extending the elastic heat-conducting member 200 along the circumferential direction of the single cell 100, at least a part of the elastic heat-conducting member 200 is located between two adjacent single cells 100. For example, the elastic heat-conducting member 200 can be wound around the single cell 100 along the circumferential direction of the single cell 100, and the elastic heat-conducting member 200 is bent back and forth in an S shape to wind around a plurality of single cells 100. In this way, the contact area between the elastic heat-conducting member 200 and the single cell 100 can be increased, and then the adjacent single cells 100 can be separated by the elastic heat-conducting member 100. The elastic heat-conducting member 100 can insulate and isolate a plurality of single cells 100, which is beneficial to improving the electrical safety of the battery module 1.

[0049] Moreover, by disposing at least a part of the elastic heat-conducting member 200 between two adjacent single cells 100, at least a part of the elastic heat-conducting member 200 can isolate the two adjacent single cells 100, and then the elastic heat-conducting member 200 can absorb the collision force and vibration between the two adjacent single cells 100, thereby avoiding problems such as direct collision or friction between the two adjacent single cells 100, which is beneficial to improving the protection effect on the single cells 100 and can prevent short circuits of multiple single cells 100, and the electrical safety is higher.

[0050] In addition, a cooling cavity is provided in the elastic heat-conducting member 200, and a cooling medium is installed in the cooling cavity. When the single cell 100 generates heat during operation, the elastic heat-conducting member 200 can use the cooling medium in the cooling cavity to dissipate heat from the single cell 100, so that the temperature of the single cell 100 can be kept low, that is, the single cell 100 can operate within a low-temperature safe temperature range, thereby extending the service life of the single cell 100.

[0051] Furthermore, by selectively connecting the temperature control device 300 to the cooling cavity, when the temperature of the battery module 1 rises, the cooling medium in the cooling cavity can be evaporated into a gas at high temperature. At this time, the temperature control device 300 can absorb the high-temperature gaseous cooling medium in the cooling cavity, that is, the heat of the single cell 100 can be quickly released by discharging the high-temperature cooling medium from the cooling cavity. At the same time, the temperature control device 300 can supply low-temperature liquid cooling medium to the cooling cavity, thereby ensuring an adequate amount of cooling medium in the cooling cavity and using the low-temperature gaseous cooling medium to quickly reduce the temperature of the cooling medium in the cooling cavity, and then quickly reduce the temperature of the elastic heat-conducting member 200, so as to make full use of the elastic heat-conducting member 200 to dissipate heat from the single cell 100, and the cooling effect of the battery module 1 is better.

[0052] In this way, the elastic heat-conducting member 200 of the battery module 1 according to the embodiment of the present invention can insulate and isolate the single cells 100, dissipate heat, reduce the friction and vibration between the single cells 100, and at the same time make the cooling effect of the battery module 1 better.

[0053] In some specific embodiments of the present invention, as Figures 1-4 shown, the temperature control device 300 includes a cooling medium storage 310 and a first on-off valve 320. Among them, the first on-off valve 320 can be an expansion valve.

[0054] The cooling medium storage 310 is used to store the cooling medium, and the first on-off valve 320 is respectively connected to the cooling medium storage 310 and the cooling cavity to control the on-off between the cooling medium storage 310 and the cooling cavity.

[0055] That is to say, both ends of the first on-off valve 320 are respectively connected to the cooling medium storage 310 and the cooling cavity. When the temperature of the single battery 100 is relatively low, the first on-off valve 320 can be closed. At this time, the elastic heat-conducting member 200 can meet the heat dissipation requirements of the single battery 100. When the temperature of the single battery 100 rises, the first on-off valve can be opened, and then the cooling medium storage 310 and the cooling cavity can be communicated, so that the high-temperature cooling medium in the cooling cavity can flow out through the first on-off valve 320. At the same time, the low-temperature cooling medium in the cooling medium storage 310 can flow into the cooling cavity through the first on-off valve 320 to quickly reduce the temperature of the cooling medium in the cooling cavity, and then the temperature of the elastic heat-conducting member 200 can be quickly reduced to use the elastic heat-conducting member 200 to quickly cool the single battery 100.

[0056] Moreover, when the temperature of the single battery 100 rises, the temperature of the elastic heat-conducting member 200 increases, and the air pressure in the cooling cavity increases. At this time, the high-pressure air flow in the cooling cavity can push open the first on-off valve 320, and then the cooling cavity and the cooling medium storage 310 can be communicated.

[0057] In some specific embodiments of the present invention, as Figures 1-4 shown, the temperature control device 300 further includes a flow control unit 330. Among them, the flow control unit 330 can be a precision metering valve.

[0058] The flow control unit 330 is connected between the cooling medium storage 310 and the first on-off valve 320 to adjust the flow rate of the cooling medium flowing from the cooling medium storage 310 to the cooling cavity.

[0059] That is to say, one end of the flow control unit 330 is connected to the cooling medium storage 310 and the other end is connected to the first on-off valve 320. When the first on-off valve 320 is opened and the cooling medium flows from the cooling medium storage 310 through the first on-off valve 320 to the cooling cavity, the cooling medium needs to flow through the flow control unit 330. In this way, the flow rate and flow velocity of the cooling medium flowing from the cooling medium storage 310 to the cooling cavity can be controlled by the flow control unit 330 to avoid too fast flow velocity of the cooling medium, so that the flow of the cooling medium is smoother. Moreover, the amount of the cooling medium in the cooling cavity can be ensured to be appropriate, and there is enough cooling medium in the cooling cavity to exchange heat with the single battery 100, and then the cooling effect of the elastic heat-conducting member 200 on the single battery 100 can be ensured to be better.

[0060] In some specific embodiments of the present invention, the temperature control device 300 further includes a second on-off valve (not shown in the figure). Among them, the second on-off valve can be an expansion valve.

[0061] The second on-off valve is connected between the cooling medium storage 310 and the flow control unit 330 to control the on-off of the cooling medium storage 310 and the flow control unit 330.

[0062] In this way, when the temperature of the single cell 100 rises, the high-pressure air flow in the cooling chamber can first push open the first on-off valve 320, and then push open the second on-off valve, so as to connect the cooling chamber and the cooling medium storage 310. The low-temperature cooling medium in the cooling medium storage 310 can flow into the cooling chamber through the second on-off valve, the flow control unit 330 and the first on-off valve 320 in sequence, so as to reduce the temperature of the cooling medium in the cooling chamber, and further reduce the temperature of the elastic heat-conducting member 200, so as to use the elastic heat-conducting member 200 to quickly cool the single cell 100.

[0063] Furthermore, as shown in Figure 1 , Figure 2 and Figure 4 , the cooling medium storage 310 is arranged above the second on-off valve and higher than the flow control unit 330. With this arrangement, when the second on-off valve is opened, the cooling medium in the cooling medium storage 310 can flow through the second on-off valve to the flow control unit 330 under its own gravity, and then flow through the flow control unit 330 and the first on-off valve 320 to the cooling chamber, without setting a driving device to drive the flow of the cooling medium, and the structure of the temperature control device 300 can be simpler, which is beneficial to cost saving.

[0064] In some specific embodiments of the present invention, as shown in Figure 1 , Figure 3 and Figure 4 , the temperature control device 300 further includes a pressure monitoring unit 340. Among them, the pressure monitoring unit 340 can be a pressure valve.

[0065] The pressure monitoring unit 340 is connected to the first on-off valve 320, and the first on-off valve 320 controls the on-off of the pressure monitoring unit 340 and the cooling chamber.

[0066] By adding the pressure monitoring unit 340, when the temperature of the single cell 100 rises and the first on-off valve 320 is opened, the air flow in the cooling chamber can flow through the first on-off valve 320 to the pressure monitoring unit 340, so as to use the pressure monitoring unit 340 to monitor the working pressure in the battery module 1 in real time.

[0067] For example, the air pressure monitoring unit 340 can be set with a preset air pressure value. When the air pressure value detected by the air pressure monitoring unit 340 reaches the preset air pressure value, it indicates that the air pressure value in the cooling cavity is too high, that is, the temperature of the elastic heat conducting member 200 is too high, and the temperature of the battery module 1 is too high. At this time, the air pressure monitoring unit 340 can issue an alarm to prompt the user that the temperature of the battery module 1 is too high, so that the user can take protective and cooling measures in time, which is beneficial to improving the safety of the battery module 1.

[0068] Specifically, when the temperature of the single battery 100 rises, after the cooling medium absorbs the heat of the single battery 100, the temperature of the cooling medium rises, and the high temperature causes the cooling medium to vaporize. Part of the vaporized cooling medium can flow through the first on-off valve 320 to the air pressure monitoring unit 340, and then the air pressure monitoring unit 340 can be used to detect the air pressure of the air flow flowing out of the cooling cavity, that is, the air pressure in the cooling cavity can be detected. At the same time, another part of the vaporized cooling medium can flow through the first on-off valve to the second on-off valve and push open the second on-off valve, so that the cooling medium reservoir 310 can communicate with the cooling cavity connecting pipe, so that the cooling medium reservoir 310 can replenish the cooling cavity to the cooling cavity.

[0069] In some specific embodiments of the present invention, such as Figure 4 shown, the elastic heat conducting member 200 includes a first sheet body, a second sheet body and a connection port 210.

[0070] The edge of the first sheet body is connected and sealed to the edge of the second sheet body to construct a cooling cavity between the first sheet body and the second sheet body. Among them, at least one of the first sheet body and the second sheet body is constructed with a connection port 210, and the connection port 210 is connected to the temperature regulating device 300.

[0071] For example, the elastic heat conducting member 200 can only connect and seal the edges of the first sheet body and the second sheet body, that is, the middle region of the elastic heat conducting member 200 forms an integral cooling cavity. The volume of the cooling cavity is relatively large, which can accommodate more cooling medium and has a better cooling effect on the single battery 100, so that the cooling and temperature reduction effect on the single battery 100 can be improved.

[0072] Or, a plurality of cooling channels can be provided in the cooling cavity, which can limit the flow path of the cooling medium, make the flow of the cooling medium more regular, and make the flow of the cooling medium smoother.

[0073] In addition, the connection port 210 can be arranged adjacent to one end of the elastic heat conducting member 200, so that the connection port 210 can be located outside the outermost single battery 100, so that the connection port 210 can be exposed, which is convenient for connecting the connection port 210 and the temperature regulating device 300.

[0074] In some specific embodiments of the present invention, such asFigure 4 As shown, the elastic heat-conducting member 200 includes a plurality of heat-conducting portions 220 and a plurality of connecting portions 230.

[0075] The plurality of heat-conducting portions 220 are arranged at intervals, and two adjacent heat-conducting portions 220 are arranged on opposite sides of the single battery 100. The heat-conducting portion 220 has a first end 221 and a second end 222. The connecting portions 230 are respectively connected to two adjacent heat-conducting portions 220, and the plurality of connecting portions 230 are alternately arranged at the first end 221 and the second end 222. Among them, both the heat-conducting portion 220 and the connecting portion 230 are configured with cooling cavities.

[0076] In this way, the elastic heat-conducting member 200 can be bent multiple times to form a plurality of heat-conducting portions 220 and a plurality of connecting portions 230. The structure of the elastic heat-conducting member 200 can be relatively simple, and the elastic heat-conducting member 200 can mainly perform heat exchange with the single battery 100 through a plurality of heat-conducting portions 220 to ensure the cooling efficiency of the elastic heat-conducting member 200 for the single battery 100. At the same time, the heat-conducting portion 220 can separate two adjacent single batteries 100, thereby avoiding the problem of damage caused by friction between two adjacent single batteries 100, which is beneficial to extending the service life of the single battery 100 and making the service life of the battery module 1 longer.

[0077] In addition, cooling cavities are provided in both the heat-conducting portion 220 and the connecting portion 230, and the cooling cavities of the heat-conducting portion 220 and the connecting portion 230 are communicated with each other, so that the cooling medium can flow to multiple parts of the elastic heat-conducting member 200, and thus the elastic heat-conducting member 200 can be used to fully dissipate heat from the single battery 100 to ensure that the single battery 100 can operate at a low temperature state.

[0078] Furthermore, as Figure 4 shown, the area of the heat-conducting portion 220 is larger than the area of the connecting portion 230.

[0079] Among them, the heat-conducting portion 220 can be in contact with the large surface of the single battery 100. By setting the area of the heat-conducting portion 220 to be larger than the area of the connecting portion 230, the contact area between the heat-conducting portion 220 and the single battery 100 can be increased, and thus the heat exchange area between the heat-conducting portion 220 and the single battery 100 can be increased, so that the cooling and temperature reduction effect of the elastic heat-conducting member 200 on the single battery 100 is better.

[0080] In some specific embodiments of the present invention, as Figure 4 shown, along the direction perpendicular to the first end 221 towards the second end 222, the size of the heat-conducting portion 220 is not less than the size of the connecting portion 230.

[0081] That is to say, in the width direction of the single battery 100 (i.e., the height direction of the battery module 1 in the figure), the size of the heat conduction part 220 can be larger than that of the connection part 230, or the size of the heat conduction part 220 can be equal to that of the connection part 230. For example, the end of the heat conduction part 220 adjacent to the connection part 230 can have the same size as the connection part 230, while the size of the middle part of the heat conduction part 220 can be larger than that of the connection part 230. Such a setting facilitates bending at the connection between the heat conduction part 220 and the connection part 230, and can increase the area of the heat conduction part 220, so that the contact area between the heat conduction part 220 and the single battery 100 is larger, thereby improving the cooling effect of the elastic heat conducting member 200 on the single battery 100, ensuring that the temperature of the single battery 100 can be lower, and the battery module 1 can operate within a safe temperature range.

[0082] The following describes a battery pack according to an embodiment of the present invention with reference to the accompanying drawings.

[0083] The battery pack includes a housing and the battery module 1 according to the above embodiment of the present invention, and the battery module 1 is disposed in the housing.

[0084] That is to say, the multiple single batteries 100, the elastic heat conducting member 200, and the temperature regulating device 300 in the battery module 1 are all fixed in the housing, and the housing can play a role in protecting and fixing the components in the battery module 1. Of course, in order to simplify the structure of the housing, some components can also be disposed outside the housing. For example, the temperature regulating device 300 can be disposed outside the housing, which can save the space inside the housing, thereby simplifying the structure of the housing, and the volume of the housing can be set smaller, which is convenient for layout.

[0085] In the battery pack implemented by the present invention, when the battery module 1 self-discharges, the heat generated by the single battery 100 is thermally conducted to the elastic heat conducting member 200, and the temperature in the cooling cavity is then transferred to the cooling medium. The cooling medium in the cooling cavity absorbs heat to form a hot air flow, which flows to the first on-off valve 320 and opens the first on-off valve 320. The hot air flow further opens the second on-off valve, and the cooling medium flows downward from the cooling medium storage 310 and then flows into the cooling cavity of the elastic heat conducting member 200, thereby reducing the temperature on the surface of the single battery 100, enabling the temperature of the entire battery pack to be evenly regulated, ensuring that the battery module 1 operates within a safe temperature range, and the temperature regulating device 300 can continuously and circularly absorb the heat generated during the operation of the single battery 100, with a better cooling effect. At the same time, the elastic heat conducting member 200 can effectively avoid the friction and breakage problems between the single batteries 100 and the short circuit hidden danger between the single batteries 100 generated when the battery module 1 vibrates, thereby extending the cycle service life of the battery pack.

[0086] According to the battery pack of the embodiment of the present utility model, by using the battery module 1 according to the above embodiment of the present utility model, the elastic heat-conducting member 200 of the battery module 1 can insulate and isolate the single battery 100, dissipate heat and cool down, and can reduce the friction and vibration between the single batteries 100. At the same time, the cooling effect of the battery module 1 is better, the heat dissipation and cooling effect of the battery pack is better, the temperature of the battery pack can be more effectively prevented from being too high, and the safety is higher.

[0087] The following describes a thermal management system according to an embodiment of the present utility model with reference to the accompanying drawings. The thermal management system includes the battery pack according to the above embodiment of the present utility model.

[0088] According to the thermal management system of the embodiment of the present utility model, by using the battery pack according to the above embodiment of the present utility model, the service life of the battery pack is longer, and it has the advantages of good cooling effect and high safety.

[0089] The following describes an electrical device according to an embodiment of the present utility model with reference to the accompanying drawings. The electrical device includes the thermal management system according to the above embodiment of the present utility model. For example, the electrical device can be a vehicle

[0090] According to the electrical device of the embodiment of the present utility model, by using the thermal management system according to the above embodiment of the present utility model, it has the advantages of good cooling effect and high safety.

[0091] The other configurations and operations of the battery module 1, battery pack, thermal management system and electrical device according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0092] In the description of this specification, the descriptions referring to the terms "specific embodiments", "specific examples", etc. mean 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0093] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery module (1), characterized in that: include: A plurality of single cells (100); An elastic heat-conducting member (200), the elastic heat-conducting member (200) extending along the circumference of the single battery (100), and at least a portion of the elastic heat-conducting member (200) being located between two adjacent single batteries (100), and a cooling cavity for accommodating a cooling medium being provided in the elastic heat-conducting member (200); A temperature regulating device (300), the temperature regulating device (300) being selectively connected to the cooling cavity so as to replenish cooling medium into the cooling cavity and / or absorb cooling medium in the cooling cavity.

2. The battery module (1) according to claim 1, characterized in that: The temperature regulating device (300) comprises: A cooling medium storage (310), wherein the cooling medium storage (310) is used to store a cooling medium; A first on-off valve (320), the first on-off valve (320) being connected to the cooling medium reservoir (310) and the cooling chamber respectively to control the on-off of the cooling medium reservoir (310) and the cooling chamber.

3. The battery module (1) according to claim 2, characterized in that: The temperature regulating device (300) further comprises: A flow control unit (330), the flow control unit (330) being connected between the cooling medium reservoir (310) and the first on-off valve (320) to adjust the flow of the cooling medium reservoir (310) to the cooling chamber.

4. The battery module (1) according to claim 3, characterized in that: The temperature regulating device (300) further comprises: A second on-off valve, the second on-off valve is connected between the cooling medium reservoir (310) and the flow control unit (330) to control the on-off of the cooling medium reservoir (310) and the flow control unit (330).

5. The battery module (1) according to claim 4, characterized in that: The cooling medium storage device (310) is arranged above the second on-off valve and higher than the flow control unit (330).

6. The battery module (1) according to claim 2, characterized in that: The temperature regulating device (300) further comprises: An air pressure monitoring unit (340), the air pressure monitoring unit (340) being connected to the first on-off valve (320), the first on-off valve (320) controlling the on-off of the air pressure monitoring unit (340) and the cooling chamber.

7. The battery module (1) according to claim 1, characterized in that: The elastic heat-conducting member (200) comprises: The first piece; A second sheet, wherein an edge of the first sheet and an edge of the second sheet are connected and sealed to construct the cooling cavity between the first sheet and the second sheet; At least one of the first sheet body and the second sheet body is configured with a connection port (210), and the connection port (210) is connected to the temperature control device (300).

8. The battery module (1) according to claim 1, characterized in that: The elastic heat-conducting member (200) comprises: A plurality of heat-conducting parts (220), the plurality of heat-conducting parts (220) being arranged at intervals and two adjacent heat-conducting parts (220) being arranged on opposite sides of the single battery (100), the heat-conducting part (220) having a first end (221) and a second end (222); a plurality of connection parts (230), the connection parts (230) being respectively connected to two adjacent heat conducting parts (220), and the plurality of connection parts (230) being alternately arranged at the first end (221) and the second end (222); Wherein, the heat conducting part (220) and the connecting part (230) are both configured with the cooling cavity.

9. The battery module (1) according to claim 8, characterized in that: The area of ​​the heat conducting portion (220) is greater than the area of ​​the connecting portion (230).

10. The battery module (1) according to claim 8, characterized in that: Along a direction perpendicular to the first end (221) toward the second end (222), the size of the heat conducting portion (220) is not smaller than the size of the connecting portion (230).

11. A battery pack, characterized in that: include: case; According to any one of claims 1 to 10, the battery module (1) is arranged in the housing.

12. A thermal management system, characterized in that: Comprising the battery pack according to claim 11.

13. An electrical equipment, characterized in that: Comprising the battery pack according to claim 11 or the thermal management system according to claim 12.

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