Battery pack, battery device and electric equipment

Abstract

The utility model relates to a battery pack and a battery device, a first mounting area used for mounting a temperature control module is formed on the outer wall of a shell of the battery pack, and a second mounting area used for being matched with a battery module in a heat conduction manner is formed at the position, corresponding to the first mounting area, of the inner wall of the shell of the battery pack. And the battery module in the shell can be heated, insulated or cooled through the temperature control module mounted in the first mounting area. And the temperature control module is externally arranged, so that the internal structure of the battery pack is simple, and the sealing performance requirement is relatively low. Moreover, aiming at the battery devices applied to different temperature environments, the battery pack can be universal, so that any one of the heat preservation module, the heating module and the cooling module is selected to be assembled in the first mounting area when the battery devices are produced, and the structure of each battery device does not need to be independently designed. Therefore, the battery pack and the battery device can obviously reduce the production cost. In addition, the utility model also provides electric equipment.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, and in particular to a battery pack, battery device and electrical equipment. Background Technology

[0002] In real-world applications, battery packs may need to operate in various temperature environments, such as cold, temperate, and tropical zones. Therefore, they must be able to perform temperature control operations, including heating, insulation, and cooling, to ensure they function within a suitable temperature range. Currently, common battery packs achieve temperature control through built-in temperature control devices. These devices automatically adjust the coolant temperature based on the ambient temperature, thus heating or cooling the battery pack.

[0003] However, to create channels for coolant flow within the battery pack, battery packs with built-in temperature control devices typically require components such as flow channel plates and liquid cooling pipes, resulting in a complex structure. Furthermore, to prevent coolant leakage within the channels, high sealing performance is required. Therefore, the production and maintenance costs of these common battery packs are relatively high. Especially for some low-end battery pack products, the structure using built-in temperature control devices is clearly not in line with market demands. Utility Model Content

[0004] Therefore, it is necessary to provide a battery pack and battery device that is suitable for different temperature environments and can reduce production costs to address the above problems.

[0005] A battery pack includes a housing and a battery module, the battery module being housed within the housing, the outer wall of the housing having a first mounting area for mounting a temperature control module, and the inner wall of the housing having a second mounting area corresponding to the first mounting area, the battery module being thermally connected to the second mounting area.

[0006] In one embodiment, the first mounting area is recessed inward to form a receiving groove, and the temperature control module mounted in the first mounting area is at least partially housed within the receiving groove.

[0007] In one embodiment, the receiving groove is a stamped groove, and a boss is formed in the second mounting area while the receiving groove is being formed.

[0008] In one embodiment, the outer wall of the housing is provided with a sealing ring extending circumferentially along the first mounting area, and the temperature control module can be mounted in the first mounting area by a threaded fastener passing through the sealing ring.

[0009] In one embodiment, the battery module is bonded to the second mounting area using thermally conductive adhesive.

[0010] A battery device includes a temperature control module and a battery pack as described in any of the preferred embodiments above. The temperature control module is disposed in the first mounting area and is configured as any one of a heat preservation module, a heating module, and a cooling module.

[0011] In one embodiment, the insulation module includes a sealing cover and insulation cotton covering one side of the sealing cover. The sealing cover is fixed to the housing and the insulation cotton is attached to the first installation area.

[0012] In one embodiment, the heating module includes a heating base plate, a coil layer, and a ceramic plate, with the coil layer sandwiched between the heating base plate and the ceramic plate. The heating base plate is fixed to the housing and the ceramic plate is attached to the first mounting area.

[0013] In one embodiment, the cooling module includes a cooling base plate, liquid cooling pipes, and a heat-conducting plate. The liquid cooling pipes are sandwiched between the cooling base plate and the heat-conducting plate. The cooling base plate is fixed to the housing and the heat-conducting plate is attached to the first mounting area.

[0014] The aforementioned battery pack and battery device, through a temperature control module installed in the first mounting area, can heat, maintain, or cool the battery modules inside the casing, thereby enabling the battery pack to operate within a suitable temperature range. Because the temperature control module is external, the internal structure of the battery pack is simple, and the sealing performance requirements are relatively low. Furthermore, the aforementioned battery pack is interchangeable for battery devices used in different temperature environments. Therefore, during the production of the battery device, only one of the heat preservation, heating, or cooling modules needs to be selected and assembled in the first mounting area, eliminating the need to design the structure for each battery device individually. This significantly reduces R&D costs, tooling costs, and mold costs. Therefore, the aforementioned battery pack and battery device can significantly reduce production costs.

[0015] In addition, an electrical device is provided, which includes a battery device as described in the preferred embodiment above. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the battery device in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the battery device in another embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the battery device in another embodiment of the present invention;

[0020] Figure 4 for Figure 1 A schematic diagram of the insulation module in the battery device shown.

[0021] Figure 5 for Figure 2 A schematic diagram of the heating module in the battery device shown;

[0022] Figure 6 for Figure 3 The diagram shows the structure of the cooling module in the battery device.

[0023] Figure 7 This is a schematic diagram of the battery pack structure in a preferred embodiment of the present invention;

[0024] Figure 8 for Figure 7 An exploded view of the casing inside the battery pack shown.

[0025] Figure 9 for Figure 7 The front view of the battery pack shown;

[0026] Figure 10 This is a front view of the housing in another embodiment of the present invention. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a battery device 10. In addition, this utility model also provides an electrical appliance.

[0034] The aforementioned electrical equipment includes the aforementioned battery device 10, and is capable of being powered by the aforementioned battery device 10. The aforementioned electrical equipment can be vehicles, spacecraft, electric toys, power tools, energy storage devices, and amusement equipment, etc. Vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices can be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment can be carousels, drop towers, etc. This application does not impose any special limitations on the aforementioned electrical equipment.

[0035] For new energy vehicles, the aforementioned battery device 10 can serve as a driving power source, thereby replacing fossil fuels to provide driving power. The battery device 10 includes a battery pack 100 and a temperature control module 200. The temperature control module 200 can perform temperature control operations on the battery pack 100 to ensure that the battery pack 100 operates within a suitable temperature range (typically around 25°C).

[0036] Specifically, the temperature control module 200 is configured as any one of the following: a heat preservation module 200a, a heating module 220b, and a cooling module 220c. The heat preservation module 200a maintains the temperature of the battery pack 100, the heating module 220b heats the battery pack 100, and the cooling module 220c cools the battery pack 100. The temperature control module 200 can be installed with the battery pack 100 using threaded fasteners, bayonet clamps, or other methods.

[0037] Please refer to the following: Figure 7 and Figure 8 In a preferred embodiment of the present invention, the battery pack 100 includes a housing 110 and a battery module 120.

[0038] The housing 110 has a receiving space for accommodating the battery module 120. The external contour of the housing 110 can be configured into a square or other shapes depending on the installation space. The housing 110 is generally configured as two interlocking parts to facilitate the installation of the battery module 120 and other electrical components. The housing 110 is generally made of a material with good thermal conductivity, such as metal, which helps the temperature control module 200 to exchange heat with the battery module 120 inside the housing 110 through the housing 100, thereby facilitating the heating or cooling of the battery pack 100. Optionally, for low-end batteries, the housing 110 can be made of sheet metal.

[0039] The battery module 120 is housed within the casing 110, and each battery module 120 generally includes multiple battery cells, which can be electrically connected in series, parallel, or a combination of series and parallel connections. The battery cells can be lithium-ion, sodium-ion, or magnesium-ion batteries, and their external contours can be cylindrical, flat, cuboid, or other shapes, but are not limited to these. Specifically, in this embodiment, the battery cell is a lithium-ion prismatic battery.

[0040] Furthermore, a first mounting area 101 is formed on the outer wall of the housing 110, and a second mounting area 102 is formed on the inner wall of the housing 110 at a position corresponding to the first mounting area 101. Specifically, in this embodiment, the housing 110 is square, and the second mounting area 102 and the first mounting area 101 are respectively located on the inner and outer sides of one of the large surfaces of the housing 110. Further, the temperature control module 200 is mounted in the first mounting area 101, and the battery module 120 is thermally connected to the second mounting area 102.

[0041] The heat generated by the battery module 120 can be conducted to the first mounting area 101 through the shell wall of the housing 110, and the heat generated by the temperature control module 200 can be conducted to the second mounting area 102 through the shell wall of the housing 110. Therefore, the battery module 120 and the temperature control module 200 can exchange heat through the housing 110. Thus, the temperature control module 200 installed in the first mounting area 101 can heat, keep warm, or cool the battery module inside the housing 110, thereby enabling the battery pack 100 to operate within a suitable temperature range. Moreover, since the temperature control module 200 is externally mounted, there is no need to set up flow channels or other structures inside the battery pack 100, resulting in a simple internal structure and relatively low requirements for sealing performance.

[0042] In this embodiment, the battery module 120 is bonded to the second mounting area 102 using thermally conductive adhesive 130. The thermally conductive adhesive 130 can bond and fix the battery module 120, thereby helping to improve the mode of the housing 110. Moreover, the thermally conductive adhesive 130 can improve the heat conduction efficiency, thereby enabling the battery module 120 to better exchange heat with the shell wall of the housing 110.

[0043] Furthermore, when the temperature control module 200 malfunctions during actual use of the battery device 10, the entire temperature control module 200 can be disassembled and repaired without disassembling the battery pack 100. This improves repair efficiency and reduces repair costs. Moreover, since the battery pack 100 does not require multiple disassemblies and reassemblies during subsequent use and maintenance, the integrity of the casing 110 can be avoided, thus ensuring the airtightness of the battery pack 100 and improving its safety performance.

[0044] Furthermore, during the assembly of the battery device 10, a corresponding temperature control module 200 can be selected and assembled into the first mounting area 101 of the battery pack 100 for battery devices 10 used in different temperature environments, thus making the battery pack 100 universal. For example, for temperate regions, a heat insulation module 200a is selected and assembled with the battery pack 100; for cold regions, a heating module 200b is selected and assembled with the battery pack 100; and for tropical regions, a cooling module 200c is selected and assembled with the battery pack 100. In other words, there is no need to design the structure of each battery device 10 separately for different temperature environments, thereby greatly reducing R&D costs, tooling costs, and mold costs. Moreover, only one production line is needed to produce the above three different types of battery devices 10, thus reducing the production line and lowering labor and equipment costs.

[0045] In order to ensure that the insulation module 200a, heating module 220b and cooling module 220c can be compatible with the same type of battery pack 100, the specifications of the insulation module 200a, heating module 220b and cooling module 220c are roughly the same and compatible with the first installation area 101, and can be installed with the housing 110 through the same installation method.

[0046] Please see Figure 4 In one embodiment, the insulation module 200a includes a sealing cover 210a and insulation cotton 220a. The insulation cotton 220a covers the sealing cover 210a, and the sealing cover 210a is fixed to the housing 110 and the insulation cotton 220a is attached to the first installation area 101.

[0047] The insulation cotton 220a can be adhered to the surface of the sealing cover 210a, which can be fixed to the housing 110 by multiple threaded fasteners along its edge. The sealing cover 210a can be made of materials such as metal or plastic, and has high structural strength, serving to support the insulation cotton 220a. Because the insulation cotton 220a is in contact with the first mounting area 101, it can significantly reduce the efficiency of heat dissipation through the first mounting area 101, thereby achieving the purpose of heat preservation for the battery module 120 and the battery pack 100.

[0048] Please see Figure 5 In one embodiment, the heating module 200b includes a heating base plate 210b, a coil layer 220b, and a ceramic plate 230b. The coil layer 220b is sandwiched between the heating base plate 210b and the ceramic plate 230b, and the heating base plate 210b is fixed to the housing 110 and the ceramic plate 230b is attached to the first mounting area 101.

[0049] Specifically, the heating base plate 210b can be molded from materials such as metal or plastic, possessing high structural strength. The heating base plate 210b is fixed to the housing 110 using multiple threaded fasteners along its edge. The coil layer 220b includes a coil tray 221b and a metal coil 222b. The metal coil 222b is fixed within the coil tray 221b by snap-fit ​​fasteners (not shown in the figure). The coil tray 221b can be bonded to the surface of the heating base plate 210b using structural adhesive to fix the coil layer 220b to the surface of the heating base plate 210b. The ceramic plate 230b can be connected to the heating base plate 210b using screws and structural adhesive. A socket 240b for electrical connection to the metal coil 222b is provided on the side of the heating base plate 210b facing away from the coil layer 220b, facilitating power supply to the metal coil 222b.

[0050] When the coil 222b is energized, it generates an alternating magnetic field. This magnetic field interacts with the shell wall of the metal housing 110 to generate heat, thereby heating the shell wall of the housing 110. The heat can be conducted through the shell wall of the housing 110 to the battery module 120 to heat the battery module 120.

[0051] Please see Figure 6 In one embodiment, the cooling module 200c includes a cooling base plate 210c, a liquid cooling pipe 220c, and a heat-conducting plate 230c. The liquid cooling pipe 220c is sandwiched between the cooling base plate 210c and the heat-conducting plate 230c. The cooling base plate 210c is fixed to the housing 110 and the heat-conducting plate 230c is attached to the first mounting area 101.

[0052] Specifically, the cooling base plate 210c can be molded from materials such as metal or plastic, possessing high structural strength, and can be fixed to the housing 110 by multiple threaded fasteners along its edge. The heat-conducting plate 230c can be made of thermally conductive silicone, possessing high thermal conductivity. The liquid cooling pipe 220c can be fixed to the surface of the cooling base plate 210c by clips (not shown in the figure), and the water nozzle 250c connected to the liquid cooling pipe 220c protrudes from the outside of the cooling base plate 210c through it, thereby facilitating the connection of an external coolant circulation device (not shown in the figure).

[0053] A thermal insulation sealing ring 240c is also provided between the cooling base plate 210c and the liquid cooling pipe 220c. The heat generated by the battery module 120 during operation can be transferred to the first mounting area 101 through the shell wall of the housing 110, and then conducted to the liquid cooling pipe 220c through the heat conduction plate 230c, and finally carried away by the coolant flowing through the liquid cooling pipe 220c, thereby achieving the purpose of cooling the battery module 120 and the battery pack 100.

[0054] The sealing cover 210a, heating base plate 210b, and cooling base plate 210c are roughly the same in shape and size, and all match the first installation area 101. Each of the sealing cover 210a, heating base plate 210b, and cooling base plate 210c has several screw holes along its edge, and the distribution of these screw holes is consistent across all three. Therefore, the insulation module 200a, heating module 220b, and cooling module 220c can all be installed with the housing 110 using threaded fasteners, ensuring overall installation compatibility and greater flexibility.

[0055] Please refer to the following: Figure 9 In this embodiment, the first mounting area 101 is recessed inward to form a receiving groove 111, and the temperature control module 200 installed in the first mounting area 101 is at least partially housed in the receiving groove 111.

[0056] The receiving groove 111 can position and limit the temperature control module 200, making it convenient to assemble the temperature control module 200. Moreover, the receiving groove 111 can also protect the temperature control module 200 installed in the first installation area 101, effectively reducing the probability of the temperature control module 200 colliding with other structures.

[0057] Specifically, in this embodiment, the receiving groove 111 is a stamped groove, and a boss (not shown) is formed in the second mounting area 102 at the same time as the receiving groove 111 is formed. By stamping the outer side of the housing 110, the receiving groove 111 can be formed in the first mounting area 101 while the boss is formed in the second mounting area 102. The boss can better support the battery module 120, thereby ensuring that the inner wall of the housing 110 can effectively contact the battery module 120. Moreover, the stamped receiving groove 111 and the boss can also increase the structural strength of the housing 110.

[0058] In this embodiment, a sealing ring 140 extending circumferentially along the first mounting area 101 is provided on the outer wall of the housing 110. The temperature control module 200 can be mounted in the first mounting area 101 via a threaded fastener (not shown) that passes through the sealing ring 140. Using a threaded fastener to mount the temperature control module 200 has advantages such as low cost, convenient operation, and small space occupation. Furthermore, the sealing ring 140 can fill the gap between the threaded fastener and the housing 120, thereby improving the sealing performance of the housing 110.

[0059] In addition, please see Figure 10 In another embodiment, a sealing groove 112 is formed on the outer wall of the housing 110 along the opening edge of the receiving groove 111, and the sealing ring 140 is received in the sealing groove 112. Before assembling the temperature control module 200, the sealing ring 140 can be installed in the sealing groove 112 to fix the sealing ring 140, thereby preventing the sealing ring 140 from shifting when installing the temperature control module 200.

[0060] Furthermore, after the temperature control module 200 is secured to the first mounting area 101 using threaded fasteners, the edge of the temperature control module 200 is also accommodated within the sealing groove 112. In this way, the temperature control module 200 is flush with the outer surface of the housing 110, thereby providing better protection for the temperature control module 200 without increasing the thickness of the battery device 10.

[0061] The aforementioned battery pack 100 and battery device 10, through a temperature control module 200 installed in the first mounting area 101, can heat, maintain, or cool the battery module 120 within the housing 110, thereby enabling the battery pack 100 to operate within a suitable temperature range. Because the temperature control module 200 is externally located, the internal structure of the battery pack 100 is simple, and the sealing performance requirements are relatively low. Furthermore, the battery pack 100 is universally applicable to battery devices 10 used in different temperature environments. Therefore, when manufacturing the battery device 10, only one of the heat preservation module 200a, heating module 200b, and cooling module 200c needs to be assembled in the first mounting area 101, eliminating the need for separate design for each type of battery device 10. This significantly reduces R&D costs, tooling costs, and mold costs. Therefore, the aforementioned battery pack 100 and battery device 10 can significantly reduce production costs.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery pack, comprising a housing and a battery module, wherein the battery module is housed within the housing, characterized in that, The outer wall of the housing has a first mounting area for mounting a temperature control module, and the inner wall of the housing has a second mounting area corresponding to the first mounting area. The battery module is thermally connected to the second mounting area.

2. The battery pack according to claim 1, characterized in that, The first mounting area is recessed inward to form a receiving groove, and the temperature control module installed in the first mounting area is at least partially housed in the receiving groove.

3. The battery pack according to claim 2, characterized in that, The receiving groove is a stamped groove, and a boss is formed in the second mounting area at the same time as the receiving groove is formed.

4. The battery pack according to claim 1, characterized in that, The outer wall of the housing is provided with a sealing ring extending circumferentially along the first installation area, and the temperature control module can be installed in the first installation area by threaded fasteners that pass through the sealing ring.

5. The battery pack according to claim 1, characterized in that, The battery module is bonded to the second mounting area using thermally conductive adhesive.

6. A battery device, characterized in that, It includes a temperature control module and a battery pack as described in any one of claims 1 to 5, wherein the temperature control module is disposed in the first installation area, and the temperature control module is configured as any one of a heat preservation module, a heating module, and a cooling module.

7. The battery device according to claim 6, characterized in that, The insulation module includes a sealing cover and insulation cotton covering one side of the sealing cover. The sealing cover is fixed to the housing and the insulation cotton is attached to the first installation area.

8. The battery device according to claim 6, characterized in that, The heating module includes a heating base plate, a coil layer, and a ceramic plate. The coil layer is sandwiched between the heating base plate and the ceramic plate. The heating base plate is fixed to the housing and the ceramic plate is attached to the first mounting area.

9. The battery device according to claim 6, characterized in that, The cooling module includes a cooling base plate, liquid cooling pipes, and a heat-conducting plate. The liquid cooling pipes are sandwiched between the cooling base plate and the heat-conducting plate. The cooling base plate is fixed to the housing and the heat-conducting plate is attached to the first installation area.

10. An electrical appliance, characterized in that, Includes the battery device as described in claim 9 above.

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