Battery bracket, battery module, energy storage device and electric equipment

Abstract

The utility model discloses a battery bracket, a battery module, an energy storage device and electric equipment. The battery support comprises a support body and a heating piece. The bracket body is provided with an accommodating cavity; the accommodating cavity is used for accommodating a plurality of battery monomers; the heating piece and the support body are integrally formed into a single body structure, and the heating piece is used for being electrified to heat so as to heat the battery single body contained in the containing cavity. According to the battery bracket, the battery module, the energy storage device and the electric equipment provided by the embodiment of the invention, the heating piece and the bracket body can be integrally formed into a single body structure, namely, the heating piece and the bracket body are of an integrated structure, so that compared with a split structure of the heating piece and the bracket body, the heating piece and the bracket body are integrally formed into a whole; the number of parts in the battery bracket is smaller, so that the assembly steps of the battery bracket and the battery module can be reduced, the operation burden of a user is relieved, and the assembly efficiency of the battery bracket and the battery module is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a battery bracket, a battery module, an energy storage device and an electrical equipment. Background Art

[0002] At present, battery modules, such as lithium battery modules or sodium battery modules, are widely used in various devices, wherein the positive and negative electrodes inside the battery cells in the battery module can undergo redox reactions with the electrolyte to achieve charging and discharging functions. Because the charging and discharging performance of the battery cells will be greatly limited in a low temperature environment, for example, the discharge capacity of the lithium battery cells is reduced in a low temperature environment; or when the lithium battery cells are charged in a low temperature environment, lithium deposition is easily formed on the surface of the negative electrode, affecting the safety of the lithium battery module. Therefore, a heating system can be added to the battery module, and the heating system can heat the battery cells to ensure the stability of the battery module. However, the heating system is usually an independent component, and when installed inside the battery module, it needs to be connected and matched with the internal structure of the battery module (such as a bracket, etc.), which leads to more assembly steps of the battery module, increases the user's operating burden, and affects the assembly efficiency of the battery module. Utility Model Content

[0003] Embodiments of the present application provide a battery bracket, a battery module, an energy storage device, and an electrical device.

[0004] The battery holder of the embodiment of the present application comprises a holder body and a heating element. The holder body is provided with a receiving cavity, and the receiving cavity is used to receive a plurality of battery cells. The heating element and the holder body are integrally formed into a single structure, and the heating element is used to generate heat by powering on to heat the battery cells received in the receiving cavity.

[0005] In some embodiments, the heater and the support body are a single unit structure formed by injection molding.

[0006] In some embodiments, the heating element and the support body are a single structure formed by three-dimensional printing.

[0007] In some embodiments, the support body is made of plastic. The heating element is made of at least one of iron-chromium-aluminum alloy, nickel-chromium alloy, molybdenum alloy and copper-nickel alloy.

[0008] In certain embodiments, the support body includes a first body and a second body that are combined, and the first body and the second body together form the accommodating cavity; and the heating element is disposed on the first body and / or the second body.

[0009] In some embodiments, the first body includes a top wall and a peripheral wall extending from the periphery of the top wall toward the second body, the second body includes a bottom wall and a side wall extending from the periphery of the bottom wall toward the first body, the peripheral wall is connected to the side wall, the top wall and the bottom wall are spaced apart and opposite to each other, and at least one of the top wall, the bottom wall, the peripheral wall and the side wall is provided with the heating element.

[0010] In some embodiments, the first body includes a top wall and a peripheral wall extending from the periphery of the top wall toward the second body, the second body is covered on the peripheral wall and is spaced opposite to the top wall, and at least one of the top wall, the peripheral wall and the second body is provided with the heating element.

[0011] In some embodiments, the second body includes a bottom wall and a side wall extending from the periphery of the bottom wall toward the first body, the first body is covered on the side wall and is spaced opposite to the bottom wall, and at least one of the bottom wall, the side wall and the first body is provided with the heating element.

[0012] In some embodiments, the heating element is embedded in the support body, and the heating element is completely wrapped by the support body.

[0013] In certain embodiments, the heating element is embedded in the support body, and at least a portion of the heating element is exposed from the support body into the accommodating cavity.

[0014] In certain embodiments, the heating element is laid on the support body and exposed in the accommodating cavity.

[0015] In some embodiments, the bracket body is provided with a plurality of spaced receiving spaces, the plurality of receiving spaces respectively correspond to the plurality of battery cells, the receiving spaces are connected to the accommodating cavity and are used to install the battery cells. The heating element includes a body portion, the body portion is provided with a plurality of through holes, the plurality of through holes respectively correspond to the plurality of battery cells, when the battery cells are installed in the receiving spaces, the through holes surround the battery cells, and the body portion is used to generate heat when powered on to heat the battery cells.

[0016] In some embodiments, the heating element further includes an extension portion, which protrudes from the main body portion toward the accommodating cavity along the direction of the central axis of the through hole, and is arranged around the accommodating space. The extension portion is used to generate heat when powered to heat the battery cell.

[0017] In some embodiments, the main body includes multiple sub-parts and at least one connecting part, each of the sub-parts is provided with multiple through holes, the extension directions of the multiple sub-parts are consistent, and adjacent sub-parts are physically and electrically connected through one connecting part.

[0018] The battery module of the embodiment of the present application comprises a battery cell assembly and a battery bracket as described in any of the above embodiments. The battery cell assembly comprises a plurality of battery cells. The bracket body is used to accommodate the plurality of battery cells, and the heating element is used to heat the plurality of battery cells.

[0019] In some embodiments, the battery cell assembly includes a circuit board, the circuit board is arranged on the bracket body, and a power port is provided on the circuit board. The heating element also includes a conductive portion, the conductive portion extends from the body portion and protrudes outside the bracket body, and the conductive portion is electrically connected to the power port through a conductive member.

[0020] In some embodiments, the power port is electrically connected to the plurality of battery cells, and the power port is used to obtain electrical energy from the plurality of battery cells.

[0021] In some embodiments, the battery cell assembly includes a busbar, which is disposed on the support body and is used to electrically connect the plurality of battery cells. The support body is provided with a plurality of through holes, which correspond to the plurality of battery cells, and are used to electrically connect the busbar to the battery cells.

[0022] The energy storage device of the embodiment of the present application includes a housing and the battery module described in any of the above embodiments, and the battery module is arranged in the housing.

[0023] The electrical equipment of the embodiment of the present application includes the energy storage device described in the above embodiment.

[0024] In the battery holder, battery module, energy storage device and electrical equipment of the embodiments of the present application, the heating element can be integrally formed with the holder body into a single structure, that is, the heating element and the holder body are an integrated structure. Therefore, compared with the case where the heating element and the holder body are separate structures, the number of parts in the battery holder of this embodiment is smaller, thereby reducing the assembly steps of the battery holder and the battery module, reducing the user's operating burden, and improving the assembly efficiency of the battery holder and the battery module.

[0025] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a schematic diagram of the structure of an electrical device in some embodiments of the present application;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of an energy storage device in certain embodiments of the present application;

[0029] Figure 3 is a schematic diagram of the three-dimensional structure of a battery module according to an embodiment of the present application;

[0030] Figure 4 yes Figure 3 A three-dimensional exploded schematic diagram of a battery module shown;

[0031] Figure 5 is a schematic diagram of the three-dimensional structure of a battery module according to another embodiment of the present application;

[0032] Figure 6 yes Figure 5 A three-dimensional exploded schematic diagram of a battery module shown;

[0033] Figure 7 is a schematic diagram of the three-dimensional structure of a battery module according to another embodiment of the present application;

[0034] Figure 8 yes Figure 7 A three-dimensional exploded schematic diagram of a battery module shown;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the heating element in the battery bracket of the battery module of certain embodiments of the present application.

[0036] Description of main component symbols:

[0037] Energy storage device 1000; electrical equipment 2000;

[0038] Battery module 100; housing 200;

[0039] Battery holder 10; battery cell assembly 20, battery cell 21, circuit board 23, power port 231, bus bar 25;

[0040] The bracket body 11, the through hole 101, the accommodating cavity 103, the receiving space 105, the first body 111, the top wall 1111, the peripheral wall 1113, the second body 113, the bottom wall 1131, and the side wall 1133;

[0041] The heating element 13 , the main body 131 , the through hole 1311 , the sub-portion 1313 , the connecting portion 1315 , the conductive portion 133 , and the extending portion 135 . DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0043] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 on the present application. 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 indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0044] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0045] See also Figure 1 , the electric device 2000 of the embodiment of the present application includes an energy storage device 1000. Specifically, the electric device 2000 may include but is not limited to electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecrafts, etc. The electric device 2000 can also be various energy storage systems that use batteries as energy storage elements, such as outdoor power supplies, home storage power supplies, and photovoltaic systems, etc.

[0046] Among them, since the electrical equipment 2000 in this embodiment includes the energy storage device 1000, it can be understood that the electrical equipment 2000 has at least the same beneficial effects as the energy storage device 1000. Therefore, for the beneficial effects of the electrical equipment 2000, please refer to the beneficial effects of the energy storage device 1000 described below.

[0047] See also Figure 1 and Figure 2 The energy storage device 1000 of the embodiment of the present application includes a housing 200 and a battery module 100, and the battery module 100 is arranged in the housing 200. Specifically, the battery module 100 is a device that can store and release electrical energy. In the present application, the energy storage device 1000 can use the battery module 100 to provide electrical energy for the operation of the electrical equipment 2000. It should be noted that, in some embodiments, the battery module 100 includes but is not limited to a lead-acid battery module, a nickel-cadmium battery module, a nickel-metal hydride battery module, an iron-nickel battery module, a sodium-nickel chloride battery module, and a lithium battery module.

[0048] Among them, since the energy storage device 1000 in this embodiment includes the battery module 100, it can be understood that the energy storage device 1000 has at least the same beneficial effects as the battery module 100. Therefore, for the beneficial effects of the energy storage device 1000, please refer to the beneficial effects of the battery module 100 described below.

[0049] See also Figure 3 , Figure 5 or Figure 7 , the battery module 100 of the embodiment of the present application includes a battery cell assembly 20 and a battery holder 10. The battery cell assembly 20 includes a plurality of battery cells 21. The holder body 11 is used to accommodate the plurality of battery cells 21, and the heating element 13 is used to heat the plurality of battery cells 21. It should be noted that, in some embodiments, the cross-sectional shape of the battery cell 21 may be circular or square, etc. In the present application, the cross-sectional shape of the battery cell 21 is circular. Among them, since the battery module 100 in the present embodiment includes the battery holder 10, it can be understood that the battery module 100 has at least the same beneficial effects as the battery holder 10, so for the beneficial effects of the battery module 100, please refer to the beneficial effects of the battery holder 10 described below.

[0050] In some embodiments, the number of the battery cell assembly 20 may include one or more, and the number of the battery cell assembly 20 in the battery module 100 may be set according to different power requirements of the power-consuming device 2000 to meet the usage requirements of different power-consuming devices 2000. Accordingly, the number of battery cells 21 in the battery cell assembly 20 may also be adjusted according to the different application scenarios of the battery cell assembly 20.

[0051] Please continue reading Figure 3 , Figure 5 or Figure 7 In some embodiments, the battery cell assembly 20 further includes a circuit board 23, and the circuit board 23 is disposed on the bracket body 11. Specifically, in some embodiments, the circuit board 23 is disposed on the bracket body 11 and is located on the outer peripheral wall of the bracket body 11; or the circuit board 23 is disposed on the bracket body 11 and is located on the inner peripheral wall of the bracket body 11. Regardless of whether the circuit board 23 is located on the outer peripheral wall of the bracket body 11 or on the inner peripheral wall of the bracket body 11, the circuit board 23 can be electrically connected to the plurality of battery cells 21 to obtain the voltage and current of the plurality of battery cells 21, and control the operation of the battery module 100 (for example, control the charging and discharging of the battery module 100) according to the voltage and current of the plurality of battery cells 21.

[0052] Furthermore, in some embodiments, the circuit board 23 can be electrically connected to the heating element 13, and control the heating element 13 to heat the multiple battery cells 21. For example, when the battery module 100 is in a low temperature environment, the circuit board 23 can control the heating element 13 to heat the multiple battery cells 21, thereby preventing the charging and discharging performance of the battery cells 21 from being limited by the low temperature, thereby improving the stability and reliability of the battery module 100.

[0053] Please combine Figure 4 , Figure 6 or Figure 8 In some embodiments, the multiple battery cells 21 can be electrically connected in series, in parallel, or in series-parallel. The series-parallel connection means that the multiple battery cells 21 are both connected in series and in parallel. Furthermore, in some embodiments, the battery cell assembly 20 also includes a bus 25, which is disposed on the support body 11, and the bus 25 is used to electrically connect the multiple battery cells 21. The support body 11 is provided with a plurality of through holes 101, and the plurality of through holes 101 correspond to the plurality of battery cells 21, and the through holes 101 are used to electrically connect the bus 25 with the battery cells 21.

[0054] The busbar 25 is a conductive metal used to electrically connect multiple battery cells 21. In the present application, when the busbar 25 is electrically connected to the multiple battery cells 21, the current can flow between the multiple battery cells 21 through the busbar 25, and be transmitted to the circuit board 23 through the busbar 25. It should be noted that in some embodiments, the busbar 25 can be made of at least one of copper, aluminum, nickel, tin and gold. The connection between the busbar 25 and the circuit board 23 includes but is not limited to welding, screw connection, connector connection and spring clamp connection.

[0055] In some embodiments, the bus 25 is disposed on the bracket body 11 and is located on the outer peripheral wall of the bracket body 11; or the bus 25 is disposed on the bracket body 11 and is located on the inner peripheral wall of the bracket body 11. The embodiments of the present application are only described by taking the bus 25 disposed on the bracket body 11 and located on the outer peripheral wall of the bracket body 11 as an example. In some embodiments, the bus 25 can extend into the bracket body 11 through the through hole 101 and be electrically connected to the battery cell 21 in the bracket body 11. In other embodiments, the end of the battery cell 21 (the electrode terminal on the battery cell 21) can extend to the outside of the bracket body 11 through the through hole 101 and be electrically connected to the bus 25 on the outer peripheral wall of the bracket body 11.

[0056] See also Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8 The battery holder 10 of the embodiment of the present application includes a holder body 11 and a heating element 13. The holder body 11 is provided with a receiving cavity 103, and the receiving cavity 103 is used to receive a plurality of battery cells 21. The heating element 13 and the holder body 11 are integrally formed into a single structure, and the heating element 13 is used to generate heat when powered on to heat the battery cells 21 received in the receiving cavity 103.

[0057] Among them, the heating element 13 and the bracket body 11 are integrally formed into a single structure, which means that the heating element 13 and the bracket body 11 are formed together, and after the forming is completed, the two are combined to form an integral structure, rather than the two are separately formed into two separate structures, and the two separate structures are then combined together by connecting means. Therefore, compared with the heating element 13 and the bracket body 11 being separate structures, on the one hand, the single structure formed by the integral molding of the heating element 13 and the bracket body 11 in this embodiment has a higher bonding strength, thereby preventing the heating element 13 and the bracket body 11 from separating during the operation of the battery module 100, thereby improving the working stability and reliability of the battery module 100; on the other hand, the integral molding of the heating element 13 and the bracket body 11 of the present application only requires one molding process, and omits the subsequent connection process of the two separate structures, thereby improving production efficiency and saving production costs.

[0058] The heating element 13 and the bracket body 11 are integrally formed into a single structure, which can also mean that: the heating element 13 is first formed into a single structure, and then in the process of forming the bracket body 11, the heating element 13 is placed in the intermediate product before the bracket body 11 is formed, and when the forming process of the bracket body 11 is completed, the two are combined together to form an integral structure. Therefore, compared with the heating element 13 and the bracket body 11 being separate structures, on the one hand, the single structure formed by the integral molding of the heating element 13 and the bracket body 11 in this embodiment has higher bonding strength, thereby preventing the heating element 13 and the bracket body 11 from separating during the operation of the battery module 100, thereby improving the working stability and reliability of the battery module 100; on the other hand, the integral molding of the heating element 13 and the bracket body 11 of the present application can eliminate the subsequent connection process of the two separate structures, thereby improving production efficiency and saving production costs.

[0059] In some embodiments, the material of the bracket body 11 is plastic. The plastic material includes but is not limited to PCA (Poly Carbonate) or PC / ABS (Polycarbonate / ABS, polycarbonate / acrylonitrile-butadiene-styrene copolymer and mixture). The material of the bracket body 11 is plastic, which can reduce the weight of the bracket body 11 on the one hand, thereby facilitating the lightweighting of the battery bracket 10 and the battery module 100; on the other hand, the plastic material is easier to process and manufacture, thereby ensuring that the bracket body 11 can better accommodate multiple battery cells 21 and improve the applicability of the battery bracket 10.

[0060] In some embodiments, the material of the heating element 13 includes at least one of an iron-chromium-aluminum alloy, a nickel-chromium alloy, a molybdenum alloy, and a copper-nickel alloy. Specifically, in some embodiments, the heating element 13 can be electrically connected to an external power source through a circuit board 23. Among them, the heating element 13 can heat the battery cell 21 accommodated in the accommodating cavity 103 through the bracket body 11, that is, when electric energy is transmitted to the heating element 13, the heating element 13 can generate heat and transfer the heat to the bracket body 11 to heat up the bracket body 11, thereby, the bracket body 11 can heat a plurality of battery cells 21, thereby preventing the charging and discharging performance of the battery cells 21 from being limited by low temperature, thereby improving the stability and reliability of the operation of the battery module 100, and can also extend the service life of the battery module 100.

[0061] In some embodiments, the heater 13 and the bracket body 11 are a single structure of injection molding. Specifically, in some embodiments, the heater 13 and the bracket body 11 can be integrally formed into a single structure by an injection molding process. In other embodiments, the heater 13 and the bracket body 11 are a single structure of three-dimensional printing. Specifically, in some embodiments, the heater 13 and the bracket body 11 can be integrally formed into a single structure by a three-dimensional printing process. This embodiment is described as an example of a single structure of the heater 13 and the bracket body 11 being injection molded. In one example, first, the pre-set heater 13 is accommodated in a mold, and then, a molten material (molten plastic) is added to the mold so that the molten material completely wraps the heater 13 or at least partially wraps the heater 13, and the molten material is combined with the heater 13 and solidified to form an integrated heater 13 and the bracket body 11. Among them, the heater 13 can be completely located in the bracket body 11; or at least part of the heater 13 is located outside the bracket body 11. In another example, first, two molten materials are added to the mold, that is, molten plastic and molten metal material (including at least one of iron-chromium-aluminum alloy, nickel-chromium alloy, molybdenum alloy and copper-nickel alloy, etc.) are added to the mold, and the ratio of the two molten materials and the position in the mold are controlled. So that the molten plastic can completely wrap the molten metal material or at least partially wrap the molten metal material, and finally combine and solidify to form an integrated heating element 13 and the bracket body 11. Therefore, the integrated molding of the heating element 13 and the bracket body 11 only requires one molding process, and the processing steps are simpler, thereby improving production efficiency. It should be noted that in this example, the heating element 13 can be completely located inside the bracket body 11; or at least part of the heating element 13 is located outside the bracket body 11.

[0062] In the battery holder 10 of the embodiment of the present application, the heating element 13 can be integrally formed with the holder body 11 as a single body structure, that is, the heating element 13 and the holder body 11 are an integrated structure. Therefore, compared with the case where the heating element 13 and the holder body 11 are separate structures, the number of parts in the battery holder 10 of the present embodiment is smaller, thereby reducing the assembly steps of the battery holder 10 and the battery module 100, reducing the user's operating burden, and improving the assembly efficiency of the battery holder 10 and the battery module 100.

[0063] The battery holder 10 is further described below with reference to the accompanying drawings.

[0064] See also Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8In some embodiments, the support body 11 includes a first body 111 and a second body 113 that are combined, and the first body 111 and the second body 113 together form the accommodating cavity 103. The heating element 13 is disposed on the first body 111 and / or the second body 113.

[0065] In some embodiments, the first body 111 can be connected to the second body 113 in a detachable connection manner, so that it can be easily disassembled for repair or replacement when the first body 111, the second body 113 or the structure installed in the first body 111 and / or the second body 113 (such as the heating element 13, etc.) is damaged. Among them, the detachable connection method includes but is not limited to a snap connection or a threaded connection. In other embodiments, the first body 111 can be connected to the second body 113 in a non-detachable connection method, thereby improving the structural stability of the bracket body 11, preventing the first body 111 and the second body 113 from separating during the operation of the battery module 100, thereby improving the stability and reliability of the battery module 100. Among them, the non-detachable connection method includes but is not limited to bonding or welding. In some other embodiments, the first body 111 and the second body 113 are integrally arranged, that is, the first body 111 and the second body 113 are an integral structure formed in one piece.

[0066] For further information, please refer to Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8 In some embodiments, the first body 111 includes a top wall 1111 and a peripheral wall 1113 extending from the periphery of the top wall 1111 toward the second body 113. The second body 113 includes a bottom wall 1131 and a side wall 1133 extending from the periphery of the bottom wall 1131 toward the first body 111, the peripheral wall 1113 is connected to the side wall 1133, the top wall 1111 and the bottom wall 1131 are spaced apart and opposite to each other, and at least one of the top wall 1111, the bottom wall 1131, the peripheral wall 1113 and the side wall 1133 is provided with a heating element 13.

[0067] Specifically, please combine Figure 5 and Figure 6In some embodiments, when the heating element 13 is disposed in the first body 111, the heating element 13 may be disposed in at least one of the top wall 1111 and the peripheral wall 1113. For example, the heating element 13 is disposed in the top wall 1111. Thus, when the heating element 13 is powered on, the heat generated by the heating element 13 can be transferred to the battery cell 21 in the accommodating cavity 103 through the first body 111, thereby increasing the temperature of the battery cell 21 and preventing the battery cell 21 from being affected by low temperature and causing performance degradation, thereby improving the stability and reliability of the battery module 100. It is understandable that the first body 111 can also transfer the heat generated by the heating element 13 to the second body 113, so that the second body 113 can also heat the battery cell 21. In addition, when the heating element 13 is disposed in the top wall 1111 and the heating element 13 generates heat, in addition to the top wall 1111 being able to heat the battery body 21. The top wall 1111 can also transfer the heat generated by the heating element 13 to the surrounding wall 1113 and the second body 113, so that the surrounding wall 1113 and the second body 113 can also heat the battery cell 21, thereby ensuring that the production cost of the battery holder 10 is low while also ensuring the heating effect of the battery holder 10 on the battery cell 21.

[0068] Please combine Figure 7 and Figure 8 In other embodiments, when the heating element 13 is disposed in the second body 113, the heating element 13 may be disposed in at least one of the bottom wall 1131 and the side wall 1133. For example, the heating element 13 is disposed in the bottom wall 1131. Thus, when the heating element 13 is powered on, the heat generated by the heating element 13 can be transferred to the battery cell 21 in the accommodating cavity 103 through the second body 113, thereby increasing the temperature of the battery cell 21, preventing the battery cell 21 from being affected by low temperature and causing performance degradation, thereby improving the stability and reliability of the battery module 100. It is understandable that the second body 113 can also transfer the heat generated by the heating element 13 to the first body 111, so that the first body 111 can also heat the battery cell 21. In addition, when the heating element 13 is disposed in the bottom wall 1131 and the heating element 13 generates heat, in addition to the bottom wall 1131 being able to heat the battery body 21. The bottom wall 1131 can also transfer the heat generated by the heating element 13 to the side wall 1133 and the first body 111, so that the side wall 1133 and the first body 111 can also heat the battery cell 21, thereby ensuring that the production cost of the battery holder 10 is low while also ensuring the heating effect of the battery holder 10 on the battery cell 21.

[0069] Please combine Figure 3 and Figure 4In some further embodiments, when the heating element 13 is disposed in the first body 111 and the second body 113, the heating element 13 may be disposed in at least one of the top wall 1111, the bottom wall 1131, the peripheral wall 1113 and the side wall 1133. For example, the heating element 13 is disposed in the top wall 1111 and the bottom wall 1131. Thus, when the heating element 13 is energized, the heat generated by the heating element 13 can be transferred to the battery cell 21 in the accommodating cavity 103 through the first body 111 and the second body 113, thereby increasing the temperature of the battery cell 21 and preventing the battery cell 21 from being affected by low temperature and causing performance degradation, thereby improving the stability and reliability of the battery module 100. Furthermore, when the heating element 13 is disposed on the first body 111 and the second body 113 and the heating element 13 generates heat, the temperature rise of the first body 111 and the second body 113 can be substantially the same. Thus, when the first body 111 and the second body 113 jointly heat the battery cell 21, the temperature rise of each part of the battery cell 21 caused by the heat is more uniform, thereby improving the working stability and reliability of the battery module 100.

[0070] In some embodiments, the heating element 13 is embedded in the bracket body 11, and the heating element 13 is completely wrapped by the bracket body 11. Specifically, in some embodiments, when the heating element 13 is disposed on the top wall 1111 of the first body 111 and the bottom wall 1131 of the second body 113, the heating element 13 includes two, and the two heating elements 13 can be respectively embedded in the top wall 1111 and the bottom wall 1131 by injection molding, and are completely wrapped by the top wall 1111 and the bottom wall 1131, thereby, on the one hand, preventing the heating element 13 from interfering with and colliding with the external structure and causing damage, extending the service life of the heating element 13, and ensuring the normal operation of the heating element 13; on the other hand, it can reduce the space size occupied by the heating element 13 and the battery bracket 10, that is, reducing the size of the battery bracket 10, which is conducive to the miniaturization of the battery module 100.

[0071] In some other embodiments, the heating element 13 is embedded in the support body 11 , and at least a portion of the heating element 13 is exposed from the support body 11 to the accommodating cavity 103 . Specifically, in some embodiments, when the heating element 13 is arranged on the top wall 1111 of the first body 111 and the bottom wall 1131 of the second body 113, the heating element 13 includes two heating elements 13, which can be respectively embedded in the top wall 1111 and the bottom wall 1131 by injection molding, and at least partially exposed from the bracket body 11 to the accommodating cavity 103. On the one hand, this can reduce the space occupied by the heating element 13 and the battery bracket 10, that is, reduce the size of the battery bracket 10, which is conducive to the miniaturization of the battery module 100; on the other hand, it can prevent the heating element 13 from interfering with and colliding with the external structure and causing damage, extend the service life of the heating element 13, ensure the normal operation of the heating element 13, and at the same time enable the heat generated by the heating element 13 to directly act on the battery cell 21, reduce the heat loss during the transfer process, thereby improving energy utilization and reducing the energy consumption of the heating element 13.

[0072] In some further embodiments, the heating element 13 is laid on the support body 11 and exposed in the accommodating cavity 103. Specifically, in some embodiments, when the heating element 13 is arranged on the top wall 1111 of the first body 111 and the bottom wall 1131 of the second body 113, the heating element 13 includes two, and the two heating elements 13 can be respectively installed on the side of the top wall 1111 facing the accommodating cavity 103 and the side of the bottom wall 1131 facing the accommodating cavity 103. Therefore, compared with the case where the heating element 13 is embedded in the support body 11, the processing technology of the battery holder 10 in this embodiment is simpler. In addition, the exposure of the heating element 13 in the accommodating cavity 103 can also enable the heat generated by the heating element 13 to directly act on the battery cell 21. Compared with the heating element 13 heating the battery cell 21 through the support body 11, the heat loss is smaller, thereby improving the energy utilization rate and reducing the energy consumption of the heating element 13.

[0073] See also Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8 In other embodiments, the first body 111 includes a top wall 1111 and a peripheral wall 1113 extending from the periphery of the top wall 1111 toward the second body 113; the second body 113 is covered on the peripheral wall 1113 and is spaced apart from the top wall 1111, and at least one of the top wall 1111, the peripheral wall 1113 and the second body 113 is provided with a heating element 13.

[0074] Specifically, please combine Figure 5 and Figure 6In some embodiments, the heating element 13 is only disposed on the first body 111. In this case, the heating element 13 can be disposed on at least one of the top wall 1111 and the peripheral wall 1113. For example, the heating element 13 is disposed in the top wall 1111. Figure 7 and Figure 8 In other embodiments, the heating element 13 is only disposed on the second body 113. Figure 3 and Figure 4 In some further embodiments, the heating element 13 is disposed in the first body 111 and the second body 113. In this case, the heating element 13 may be disposed in at least one of the top wall 1111, the peripheral wall 1113 and the second body 113. For example, the heating element 13 is disposed in the top wall 1111 and the second body 113.

[0075] In some embodiments, the heating element 13 is embedded in the bracket body 11, and the heating element 13 is completely wrapped by the bracket body 11. Specifically, in some embodiments, when the heating element 13 is disposed on the top wall 1111 of the first body 111 and the second body 113, the heating element 13 includes two, and the two heating elements 13 can be respectively embedded in the top wall 1111 and the second body 113 by injection molding, and are completely wrapped by the top wall 1111 and the second body 113, thereby, on the one hand, preventing the heating element 13 from interfering with and colliding with the external structure and causing damage, extending the service life of the heating element 13, and ensuring the normal operation of the heating element 13; on the other hand, it can reduce the space size occupied by the heating element 13 and the battery bracket 10, that is, reducing the size of the battery bracket 10, which is conducive to the miniaturization of the battery module 100.

[0076] In some other embodiments, the heating element 13 is embedded in the support body 11 , and at least a portion of the heating element 13 is exposed from the support body 11 to the accommodating cavity 103 . Specifically, in some embodiments, when the heating element 13 is arranged on the top wall 1111 of the first body 111 and the second body 113, the heating element 13 includes two heating elements 13, which can be respectively embedded in the top wall 1111 and the second body 113 by injection molding, and at least partially exposed from the top wall 1111 and the second body 113 to the accommodating cavity 103, thereby, on the one hand, being able to reduce the space occupied by the heating element 13 and the battery holder 10, that is, reducing the size of the battery holder 10, which is conducive to the miniaturization of the battery module 100; on the other hand, being able to prevent the heating element 13 from interfering with and colliding with the external structure and causing damage, thereby extending the service life of the heating element 13 and ensuring the normal operation of the heating element 13, while also enabling the heat generated by the heating element 13 to directly act on the battery cell 21, reducing the heat loss during the transfer process, thereby improving energy utilization and reducing the energy consumption of the heating element 13.

[0077] In some further embodiments, the heating element 13 is laid on the support body 11 and exposed in the accommodating cavity 103. Specifically, in some embodiments, when the heating element 13 is arranged on the top wall 1111 of the first body 111 and the second body 113, the heating element 13 includes two, and the two heating elements 13 can be respectively installed on the side of the top wall 1111 facing the accommodating cavity 103 and the side of the second body 113 facing the accommodating cavity 103. Therefore, compared with the case where the heating element 13 is embedded in the support body 11, the processing technology of the battery holder 10 in this embodiment is simpler. In addition, the exposure of the heating element 13 in the accommodating cavity 103 can also enable the heat generated by the heating element 13 to directly act on the battery cell 21. Compared with the heating element 13 heating the battery cell 21 through the support body 11, the heat loss is smaller, thereby improving the energy utilization rate and reducing the energy consumption of the heating element 13.

[0078] See also Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8 In some further embodiments, the second body 113 includes a bottom wall 1131 and a side wall 1133 extending from the periphery of the bottom wall 1131 toward the first body 111; the first body 111 is covered on the side wall 1133 and is spaced apart from the bottom wall 1131, and at least one of the bottom wall 1131, the side wall 1133 and the first body 111 is provided with a heating element 13.

[0079] Specifically, please combine Figure 5 and Figure 6 In some embodiments, the heating element 13 is only disposed on the first body 111. Figure 7 and Figure 8 In other embodiments, the heating element 13 is only disposed on the second body 113. In this case, the heating element 13 can be disposed on at least one of the bottom wall 1131 and the side wall 1133. For example, the heating element 13 is disposed on the bottom wall 1131. Figure 3 and Figure 4 In some further embodiments, the heating element 13 is disposed in the first body 111 and the second body 113. In this case, the heating element 13 may be disposed in at least one of the bottom wall 1131, the side wall 1133 and the first body 111. For example, the heating element 13 is disposed in the bottom wall 1131 and the first body 111.

[0080] In some embodiments, the heating element 13 is embedded in the bracket body 11, and the heating element 13 is completely wrapped by the bracket body 11. Specifically, in some embodiments, when the heating element 13 is arranged on the bottom wall 1131 of the first body 111 and the second body 113, the heating element 13 includes two, and the two heating elements 13 can be respectively embedded in the first body 111 and the bottom wall 1131 by injection molding, and are completely wrapped by the first body 111 and the bottom wall 1131, thereby, on the one hand, preventing the heating element 13 from interfering with and colliding with the external structure and causing damage, extending the service life of the heating element 13, and ensuring the normal operation of the heating element 13; on the other hand, it can reduce the space size occupied by the heating element 13 and the battery bracket 10, that is, reducing the size of the battery bracket 10, which is conducive to the miniaturization of the battery module 100.

[0081] In other embodiments, the heating element 13 is embedded in the support body 11, and at least part of the heating element 13 is exposed from the support body 11 to the accommodating cavity 103. Specifically, in some embodiments, when the heating element 13 is disposed in the first body 111 and the bottom wall 1131, the heating element 13 includes two heating elements 13, which can be respectively embedded in the first body 111 and the bottom wall 1131 by injection molding, and at least part of the heating element 13 is exposed from the first body 111 and the bottom wall 1131 to the accommodating cavity 103, thereby, on the one hand, reducing the space occupied by the heating element 13 and the battery support 10, that is, reducing the size of the battery support 10, thereby facilitating the miniaturization of the battery module 100; on the other hand, preventing the heating element 13 from interfering with and colliding with the external structure to cause damage, extending the service life of the heating element 13, ensuring the normal operation of the heating element 13, and enabling the heat generated by the heating element 13 to directly act on the battery cell 21, reducing the loss of heat during the transfer process, thereby improving energy utilization and reducing the energy consumption of the heating element 13.

[0082] In some further embodiments, the heating element 13 is laid on the support body 11 and exposed in the accommodating cavity 103. Specifically, in some embodiments, when the heating element 13 is provided on the first body 111 and the bottom wall 1131, the heating element 13 includes two, and the two heating elements 13 can be respectively installed on the side of the first body 111 facing the accommodating cavity 103 and the side of the bottom wall 1131 facing the accommodating cavity 103. Therefore, compared with the case where the heating element 13 is embedded in the support body 11, the processing technology of the battery support 10 in this embodiment is simpler. In addition, the exposure of the heating element 13 in the accommodating cavity 103 can also enable the heat generated by the heating element 13 to directly act on the battery cell 21. Compared with the heating element 13 heating the battery cell 21 through the support body 11, the heat loss is smaller, thereby improving the energy utilization rate and reducing the energy consumption of the heating element 13.

[0083] In some embodiments, the battery cell 21 may include a first end and a second end opposite to each other, and the positive terminal and the negative terminal of the battery cell 21 are respectively located at the first end of the battery cell 21 and the second end of the battery cell 21. In the case where the first body 111 includes a top wall 1111 and a peripheral wall 1113 extending from the periphery of the top wall 1111 toward the second body 113, and the second body 113 includes a bottom wall 1131 and a side wall 1133 extending from the periphery of the bottom wall 1131 toward the first body 111, the first end of the battery cell 21 is opposite to one of the top wall 1111 and the bottom wall 1131, and the second end of the battery cell 21 is opposite to the other of the top wall 1111 and the bottom wall 1131. Therefore, in one possible embodiment, the heating element 13 is disposed on the top wall 1111 and / or the bottom wall 1131, so that the heating element 13 can uniformly heat the battery cells 21 accommodated in the accommodating cavity 103, that is, each battery cell 21 can be subjected to substantially equal heat, thereby ensuring the normal operation of the battery cells 21 and improving the stability and reliability of the battery module 100. In another possible embodiment, the heating element 13 is disposed on the peripheral wall 1113 and / or the side wall 1133, so that the heating element 13 can also heat the battery cells 21 accommodated in the accommodating cavity 103, and the heat generated by the heating element 13 can also be conducted to the top wall 1111 and / or the bottom wall 1131 through the peripheral wall 1113 and / or the side wall 1133, thereby ensuring the heating effect of the heating element 13 on the battery cells 21 and improving the stability and reliability of the battery module 100.

[0084] It should be noted that the following embodiments are only described by taking the example that the first body 111 includes a top wall 1111 and a peripheral wall 1113 extending from the peripheral edge of the top wall 1111 toward the second body 113, the second body 113 includes a bottom wall 1131 and a side wall 1133 extending from the peripheral edge of the bottom wall 1131 toward the first body 111, and the heating element 13 is arranged on the top wall 1111 and / or the bottom wall 1131.

[0085] See also Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8 In some embodiments, the bracket body 11 is provided with a plurality of spaced-apart receiving spaces 105 , the plurality of receiving spaces 105 respectively corresponding to a plurality of battery cells 21 , and the receiving spaces 105 are connected to the accommodating cavity 103 and are used to install the battery cells 21 .

[0086] In some embodiments, the receiving space 105 may be a groove. The top wall 1111 and the bottom wall 1131 are both provided with grooves. The groove on the top wall 1111 may be recessed from the top wall 1111 toward the side of the receiving cavity 103 toward the direction away from the bottom wall 1131. The groove on the bottom wall 1131 may be recessed from the side of the bottom wall 1131 toward the direction away from the top wall 1111. When the first body 111 and the second body 113 are combined, a groove on the top wall 1111 and a groove on the bottom wall 1131 are used to install a battery cell 21. The provision of the groove can play a role in installing and positioning the battery cell 21, preventing the battery cell 21 from shaking violently in the bracket body 11, resulting in the separation of the electrical connection between the battery cell 21 and the bus bar 25, thereby improving the working stability of the battery module 100.

[0087] In other embodiments, a protrusion is provided on the top wall 1111, which protrudes and extends from the top wall 1111 toward the bottom wall 1131, and a groove is provided on the protrusion, which is recessed from the side of the protrusion toward the bottom wall 1131 toward a direction away from the bottom wall 1131; accordingly, a protrusion is provided on the bottom wall 1131, which protrudes and extends from the bottom wall 1131 toward the top wall 1111, and a groove is provided on the protrusion, which is recessed from the side of the protrusion toward the top wall 1111 toward a direction away from the top wall 1111. At this time, the accommodating space 105 is the groove on the protrusion, and when the first body 111 and the second body 113 are combined, the groove on a protrusion of the top wall 1111 and the groove on a protrusion of the bottom wall 1131 jointly install a battery cell 21.

[0088] In some embodiments, the heating element 13 may include a main body 131, and the main body 131 is provided with a plurality of through holes 1311, and the plurality of through holes 1311 respectively correspond to a plurality of battery cells 21. When the battery cells 21 are installed in the receiving space 105, the through holes 1311 surround the battery cells 21, and the main body 131 is used to generate heat by energizing to heat the battery cells 21. It should be noted that in some embodiments, the cross-sectional shape of the through hole 1311 matches the cross-sectional shape of the battery cells 21. For example, when the cross-sectional shape of the battery cells 21 is circular, the cross-sectional shape of the through hole 1311 is also circular. Among them, the cross-sectional size of the through hole 1311 is greater than or equal to the cross-sectional size of the battery cells 21, thereby preventing the main body 131 from hindering the installation of the battery cells 21, and ensuring that the battery cells 21 can be stably installed in the receiving space 105.

[0089] In some embodiments, the body 131 may be embedded in the top wall 1111 and / or the bottom wall 1131, and the heating element 13 is completely wrapped by the top wall 1111 and / or the bottom wall 1131. In other embodiments, the body 131 may be embedded in the top wall 1111 and / or the bottom wall 1131, and at least part of the heating element 13 is exposed from the top wall 1111 and / or the bottom wall 1131 to the accommodating cavity 103. In still other embodiments, the body 131 may be laid on the top wall 1111 and / or the bottom wall 1131 and exposed to the accommodating cavity 103, that is, the body 131 may be installed on a side of the top wall 1111 facing the accommodating cavity 103, and / or installed on a side of the bottom wall 1131 facing the accommodating cavity 103.

[0090] In some embodiments, the circuit board 23 is provided with a power port 231. The heating element 13 may further include a conductive portion 133, which extends from the body portion 131 and protrudes outside the bracket body 11. The conductive portion 133 is electrically connected to the power port 231 through a conductive member. It should be noted that in some embodiments, the conductive member may be a wire harness or a copper busbar, etc.

[0091] Specifically, in some embodiments, when the heating element 13 includes two and is respectively disposed on the top wall 1111 and the bottom wall 1131, each heating element 13 includes a conductive portion 133, the conductive portion 133 extends from the main body 131 and protrudes outside the top wall 1111 and the bottom wall 1131, and the conductive portion 133 can be electrically connected to the power port 231 through the conductive member, so that the current can be transmitted to the main body 131 through the conductive portion 133, so that the main body 131 generates heat. It should be noted that, in some embodiments, the conductive portion 133 may include a positive conductive portion and a negative conductive portion, and accordingly, the power port 231 may include a positive port and a negative port, the positive conductive portion is electrically connected to the positive port through the conductive member, and the negative conductive portion is electrically connected to the negative port through the conductive member.

[0092] In some embodiments, the power port 231 is electrically connected to a plurality of battery cells 21, and the power port 231 is used to obtain the electric energy of the plurality of battery cells 21. Specifically, in some embodiments, when the battery cells 21 are in a low temperature environment, the power port 231 can obtain the electric energy of the plurality of battery cells 21, and transmit the electric energy to the conductive part 133 electrically connected to the conductive member, and flow into the main body 131 through the conductive part 133, so that the main body 131 is heated, thereby, the main body 131 can generate heat and transmit the heat to the bracket body 11 to heat the bracket body 11, so that the bracket body 11 can heat the plurality of battery cells 21, prevent the charging and discharging performance of the battery cells 21 from being limited by low temperature, thereby improving the stability and reliability of the battery module 100, and can also extend the service life of the battery module 100. It is understandable that in other embodiments, the power port 231 can also obtain the electric energy of the plurality of battery cells 21, and transmit the electric energy to other structures electrically connected to the power port 231.

[0093] See also Figure 3 and Figure 4 , Figure 5 and Figure 6 ,or Figure 7 and Figure 8 In some embodiments, the main body 131 includes a plurality of sub-parts 1313 and at least one connecting part 1315 , each sub-part 1313 is provided with a plurality of through holes 1311 , the extension directions of the plurality of sub-parts 1313 are consistent, and adjacent sub-parts 1313 are physically and electrically connected via a connecting part 1315 .

[0094] Specifically, in some embodiments, when adjacent sub-sections 1313 are physically and electrically connected through a connecting portion 1315, current can flow between adjacent sub-sections 1313 through the connecting portion 1315, so that both adjacent sub-sections 1313 can generate heat. In this case, the positive conductive portion and the negative conductive portion can be respectively disposed on adjacent sub-sections 1313. For example, when the body portion 131 includes two sub-sections 1313 (e.g., a first sub-section and a second sub-section), and the first sub-section and the second sub-section are electrically connected through a connecting portion 1315, the positive conductive portion and the negative conductive portion can be respectively disposed on the first sub-section and the second sub-section, and current can flow into one of the first sub-section and the second sub-section through the positive conductive portion, and flow through the other of the first sub-section and the second sub-section and then flow out through the negative conductive portion, so that both the first sub-section and the second sub-section can generate heat.

[0095] In the case where the connecting portion between adjacent sub-sections can only achieve physical connection but not electrical connection, electric energy cannot flow between adjacent sub-sections through the connecting portion. In this case, a positive conductive portion and a negative conductive portion may be provided on one sub-section at the same time. For example, in the case where the main body includes two sub-sections (e.g., a first sub-section and a second sub-section), and the first sub-section and the second sub-section are physically connected through a connecting portion, a positive conductive portion and a negative conductive portion may be provided on the first sub-section and the second sub-section at the same time, thereby, the current can flow into the first sub-section through the positive conductive portion on the first sub-section and flow out through the negative conductive portion on the first sub-section; and flow into the second sub-section through the positive conductive portion on the second sub-section and flow out through the negative conductive portion on the second sub-section.

[0096] Furthermore, please combine Fig. 9 In some embodiments, the heating element 13 may further include an extension portion 135, which protrudes from the main body 131 toward the accommodating cavity 103 along the direction of the central axis of the through hole 1311, and is arranged around the accommodating space 105. The extension portion 135 is used to generate heat when powered on to heat the battery cell 21. The arrangement of the extension portion 135 can increase the heating area of ​​the battery cell 21 by the heating element 13, thereby improving the heating effect of the heating element 13 on the battery cell 21, and further improving the stability and reliability of the battery module 100.

[0097] Specifically, in some embodiments, the extension portion 135 is integrally arranged with the main body portion 131, that is, the extension portion 135 and the main body portion 131 are an integral structure. In this case, when current flows into the main body portion 131 through the conductive portion 133, the current can also flow into the extension portion 135 so that the extension portion 135 can generate heat and heat the battery cell 21.

[0098] In some embodiments, the extension portion 135 may be embedded in the top wall 1111 and / or the bottom wall 1131, and the extension portion 135 is completely wrapped by the top wall 1111 and / or the bottom wall 1131. In other embodiments, the extension portion 135 may be embedded in the top wall 1111 and / or the bottom wall 1131, and at least a portion of the extension portion 135 is exposed from the top wall 1111 and / or the bottom wall 1131 to the receiving space 105. In still other embodiments, the extension portion 135 may be disposed on the top wall 1111 and / or the bottom wall 1131, and exposed to the receiving space 105. For example, in the case where the receiving space 105 is a groove, the extension portion 135 may be disposed on the inner peripheral wall of the groove.

[0099] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0100] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery bracket, characterized in that: include: A bracket body, wherein the bracket body is provided with a receiving cavity, and the receiving cavity is used to receive a plurality of battery cells; and A heating element is formed integrally with the bracket body to form a single body structure, and the heating element is used to generate heat when powered on to heat the battery cell accommodated in the accommodating cavity.

2. The battery holder according to claim 1, characterized in that: The heating element and the support body are a single structure formed by injection molding; or The heating element and the support body are a single body structure formed by three-dimensional printing.

3. The battery holder according to claim 1, characterized in that: The material of the bracket body is plastic; The material of the heating element includes at least one of iron-chromium-aluminum alloy, nickel-chromium alloy, molybdenum alloy and copper-nickel alloy.

4. The battery holder according to claim 1, characterized in that: The support body comprises a first body and a second body combined together, wherein the first body and the second body together form the accommodating cavity; and the heating element is disposed on the first body and / or the second body.

5. The battery holder according to claim 4, characterized in that: The first body comprises a top wall and a peripheral wall extending from the periphery of the top wall toward the second body, the second body comprises a bottom wall and a side wall extending from the periphery of the bottom wall toward the first body, the peripheral wall is connected to the side wall, the top wall is spaced apart from the bottom wall and faces each other, and at least one of the top wall, the bottom wall, the peripheral wall and the side wall is provided with the heating element; or The first body comprises a top wall and a peripheral wall extending from the periphery of the top wall toward the second body, the second body is covered on the peripheral wall and spaced apart from the top wall, and at least one of the top wall, the peripheral wall and the second body is provided with the heating element; or The second body includes a bottom wall and a side wall extending from the periphery of the bottom wall toward the first body. The first body is covered on the side wall and is spaced apart from the bottom wall. The heating element is disposed on at least one of the bottom wall, the side wall and the first body.

6. The battery holder according to claim 1, characterized in that: The heating element is embedded in the support body, and the heating element is completely wrapped by the support body; or The heating element is embedded in the support body, and at least a portion of the heating element is exposed from the support body to the accommodating cavity; or The heating element is laid on the support body and exposed in the accommodating cavity.

7. The battery holder according to claim 1, characterized in that: The bracket body is provided with a plurality of spaced receiving spaces, each of which corresponds to a plurality of battery cells. The receiving spaces are connected to the accommodating cavity and are used to install the battery cells. The heating element comprises: The main body is provided with a plurality of through holes, each of which corresponds to a plurality of battery cells. When the battery cells are installed in the receiving space, the through holes surround the battery cells. The main body is used to generate heat through electricity to heat the battery cells.

8. The battery holder according to claim 7, characterized in that: The heating element further comprises: An extension portion protrudes from the main body portion toward the accommodating cavity along the direction of the central axis of the through hole, the extension portion is arranged around the accommodating space, and the extension portion is used to generate heat when powered to heat the battery cell.

9. The battery holder according to claim 7, characterized in that: The main body includes a plurality of sub-parts and at least one connecting part, each of the sub-parts is provided with a plurality of the through holes, the extension directions of the plurality of sub-parts are consistent, and adjacent sub-parts are physically and electrically connected via one of the connecting parts.

10. A battery module, characterized in that: include: A battery cell assembly, wherein the battery cell assembly includes a plurality of battery cells; and The battery holder according to any one of claims 1 to 9, wherein the holder body is used to accommodate a plurality of the battery cells, and the heating element is used to heat the plurality of the battery cells.

11. The battery module according to claim 10, characterized in that: The battery core assembly includes a circuit board, which is arranged on the bracket body and has a power supply port; the heating element also includes: The conductive part extends from the main body and protrudes out of the bracket body. The conductive part is electrically connected to the power-on port through a conductive member.

12. The battery module according to claim 11, characterized in that: The power supply port is electrically connected to the plurality of battery cells, and the power supply port is used to obtain electrical energy from the plurality of battery cells.

13. The battery module according to claim 10, characterized in that: The battery cell assembly includes a busbar, which is arranged on the bracket body and is used to electrically connect the plurality of battery cells; The bracket body is provided with a plurality of through holes, the plurality of through holes correspond to the plurality of battery cells, and the through holes are used for electrically connecting the busbar and the battery cells.

14. An energy storage device, characterized in that: include: case; and The battery module according to any one of claims 10 to 13, wherein the battery module is arranged in the shell.

15. An electrical equipment, characterized in that: Includes the energy storage device as claimed in claim 14.

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