Battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and provides a battery pack, electric equipment, a plurality of battery cell modules and a battery box, the battery box comprises a box body and a box cover, at least part of the structure of the box cover and the box body form a first placement position, an accommodating part is convexly arranged on the box cover opposite to the box body, and a second placement position is formed between the accommodating part and the box body; the first placement position is arranged in the transverse direction of the box body, the second placement position is arranged in the vertical direction of the box body, and the first placement position and the second placement position are both used for accommodating the battery cell module. According to the battery pack, the energy density can be improved, and the space is reasonably utilized.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery pack and electrical device. Background Technology

[0002] In recent years, the development of new energy vehicle technology has been rapid. With the development of new energy technology, the requirements for battery packs that provide power to new energy vehicles are also increasing, among which high integration has become a trend. In order to achieve high integration of battery packs, related technologies have directly eliminated the traditional method of assembling cells into modules and then integrating modules into a housing. Instead, multiple cells are directly integrated into the housing to form a new type of CTP (Cell To Pack) battery technology. When in use, the CTP battery pack is assembled into a system and installed in the vehicle.

[0003] The CTP battery packs in the related technologies cannot make reasonable use of the vehicle's interior space when used in vehicles, and the energy density of the CTP battery packs in the related technologies is relatively low. Utility Model Content

[0004] This application provides a battery pack power supply device that can improve the energy density of the battery pack and make reasonable use of the space of the power supply device.

[0005] The first aspect of this application provides a battery pack including a plurality of battery cell modules and a battery case. The battery case includes a case body and a case cover. At least a portion of the structure of the case cover forms a first placement position with the case body. A receiving portion protrudes from the case cover away from the case body. A second placement position is formed between the receiving portion and the case body. The first placement position is arranged along the transverse direction of the case body, and the second placement position is arranged along the vertical direction of the case body. Both the first placement position and the second placement position are used to accommodate the battery cell modules.

[0006] According to the battery pack described in the first aspect of this application, by providing a receiving portion on the cover, and forming a second mounting position between the receiving portion and the casing, the space between the cover and the casing not only has a horizontal first mounting position for arranging battery cell modules, but also a vertical mounting space for battery cell modules. The second mounting position allows for the arrangement of double-layer or multi-layer battery cell modules, thus increasing the number of battery cell modules installed inside the casing and improving energy density. Furthermore, this application adopts a partially multi-layer battery cell module arrangement, allowing for flexible placement of the receiving portion on the cover according to the specific space inside the vehicle, enabling more efficient use of vehicle space.

[0007] In one possible implementation, the housing is provided with a first placement slot and a second placement slot, the receiving portion has a third placement slot, the first placement slot is used to form the first placement position, and the second placement slot and the third placement slot are connected to each other so that the second placement slot and the third placement slot form the second placement position.

[0008] In one possible implementation, the housing is provided with a plurality of first dividing members in the first placement slot, the plurality of first dividing members being spaced apart along a first direction, the plurality of dividing members dividing the first placement slot into a plurality of sub-slots.

[0009] In one possible implementation, the housing is provided with second dividing members at intervals within the second placement slot, and the gap between the second dividing members forms a limiting space for defining the position of the battery cell module.

[0010] In one possible implementation, a cooling structure is also included, the cooling structure having a first cooling layer connected to the housing and located at the bottom of the first and second placement slots.

[0011] In one possible implementation, the cooling structure further includes a second cooling layer detachably connected to the second partition, the second cooling layer being spaced apart from the first cooling layer, the second cooling layer being located at the second placement position and dividing the second placement position into upper and lower sub-placement spaces.

[0012] In one possible implementation, a limiting frame is also included, located within the upper sub-placement space, the limiting frame being detachably connected to the second segment, the limiting frame having a limiting space in which the battery cell module can be accommodated.

[0013] In one possible implementation, the limiting frame includes two limiting beams spaced apart and two limiting plates spaced apart, with the two ends of the limiting plates respectively fixed to the two limiting beams, and the limiting space is formed between the two limiting beams and the two limiting plates.

[0014] In one possible implementation, the limiting beam is provided with a first fastener and a second fastener, the limiting beam is connected to the second segment via the first fastener, and the second cooling layer is connected to the limiting beam via the second fastener.

[0015] A second aspect of this application also provides an electrical device including the battery pack described 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 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 An exploded schematic diagram of a battery pack provided according to some embodiments of this application is shown;

[0018] Figure 2 An exploded view of a portion of the structure of a battery pack provided in some embodiments of this application is shown;

[0019] Figure 3 A cross-sectional view of a portion of the structure of a battery pack provided according to some embodiments of this application is shown;

[0020] Figure 4 An exploded view of a limiting frame provided according to some embodiments of this application is shown.

[0021] Figure label:

[0022] 10. Battery box; 11. Box body; 111. First mounting slot; 112. Second mounting slot; 12. Box cover; 121. Receiving part; 1211. Third mounting slot; 131. First mounting position; 132. Second mounting position; 133. First dividing piece; 134. Second dividing piece;

[0023] 20. Battery cell module;

[0024] 30. Limiting frame; 31. Limiting beam; 311. Perforation; 312. Reinforcing plate; 32. Limiting plate; 321. Contact part; 322. Connecting part; 33. First fastener; 34. Second fastener;

[0025] 40. Cooling structure; 41. First cooling layer; 42. Second cooling layer. Detailed Implementation

[0026] With the rapid development of new energy vehicle technology and the explosive growth of the market, traditional battery pack integration methods can no longer meet market demands. Traditional battery packs typically integrate cells by encapsulating them into battery modules using external structural components, and then integrating these modules into the battery housing. This traditional power battery pack design often suffers from complex structures, heavy weight, and high costs. To address these issues, the industry has begun exploring more advanced battery pack structural designs, among which CTP (Cell To Pack) battery pack technology is gradually being adopted by major manufacturers.

[0027] CTP (Continuous To-Patient) battery packs significantly improve energy density and overall performance by directly integrating the cells into the pack, eliminating the intermediate module stage. Current mainstream battery pack designs either have only one layer for cell placement, leaving considerable unused space inside the vehicle when CTP batteries are installed, or they add an extra layer as an electrical compartment to house components like the Battery Distribution Unit (BDU) and Battery Management System (BMS). Such designs waste usable space and fail to maximize energy density; furthermore, adding an extra layer is unsuitable for vehicles with limited space. Therefore, optimizing structural design, reducing weight, lowering costs, and increasing energy density have become critical issues in the electric vehicle industry.

[0028] The battery pack provided in this application can make reasonable use of the vertical space of the battery box, and increase the space for placing battery modules in the battery box. This can not only improve the energy density, but also make full use of the space of the electrical equipment.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] See Figures 1 to 3 In a first aspect, embodiments of this application provide a battery pack for use in electrical equipment, such as electric vehicles. In some possible implementations, the battery pack includes a battery box 10 and multiple cell modules 20. The cell modules 20 serve as the power supply for the battery pack and can provide electrical energy to the electrical equipment. Each cell module 20 includes multiple cell units, and the cell modules 20 are disposed within the battery box 10.

[0031] Specifically, the battery box 10 includes a box body 11 and a box cover 12, which are detachably connected, for example, by a snap-fit ​​structure, a clip-on structure, or by screws. A receiving space for accommodating the battery cell module 20 is formed between the box body 11 and the box cover 12. In this embodiment, at least a portion of the structure of the box cover 12 and the box body 11 forms a first mounting position 131, and a receiving portion 121 protrudes from the box body 11 on the box cover 12, with a second mounting position 132 formed between the receiving portion 121 and the box body 11. Both the first mounting position 131 and the second mounting position 132 can be used to accommodate the battery cell module 20.

[0032] In this embodiment, the first mounting position 131 is arranged along the lateral direction of the housing 11, and the second mounting position 132 is arranged along the vertical direction of the housing 11. Both the lateral and vertical directions are relative directions. In this application, the lateral direction is parallel to the plane containing the length and width directions of the battery box 10, and the vertical direction is parallel to the height direction of the battery box 10. For ease of understanding, please refer to... Figure 1 , Figure 1 The X-axis shown in the diagram represents the first direction, the Y-axis represents the second direction, and the Z-axis represents the third direction. The first direction is parallel to the length direction of the battery box 10, the second direction is parallel to the width direction of the battery box 10, and the third direction is parallel to the height direction of the battery box 10.

[0033] This embodiment of the application provides a receiving portion 121 on the cover 12, and a second placement position 132 is formed between the receiving portion 121 and the housing 11. This provides space for the vertical placement of the battery cell module 20, in addition to the horizontal placement position 131 for the battery cell module 20. The second placement position 132 allows for the arrangement of double-layer or multi-layer battery cell modules 20, thereby increasing the number of battery cell modules 20 installed within the housing 11 and improving energy density. Furthermore, this application employs a partially multi-layer battery cell module arrangement, allowing for flexible placement of the receiving portion 121 on the cover 12 according to the specific space inside the vehicle, thus enabling more efficient use of the vehicle's interior space.

[0034] In some feasible embodiments, the housing 11 is provided with a first placement groove 111 and a second placement groove 112, and the receiving part 121 has a third placement groove 1211. The first placement groove 111 is used to form a first placement position 131. When the cover 12 is installed on the housing 11, the cover 12 can cover the first placement groove 111 and the cover 12 can enclose the battery module in the first placement groove 111.

[0035] For example, the first mounting slot 111 is opened in the transverse direction of the housing 11, for example, it can be opened along the first direction or along the second direction. The first mounting slot 111 can accommodate multiple battery cell modules 20. The multiple battery cell modules 20 are arranged transversely in the first mounting slot 111. When the multiple battery cell modules 20 are accommodated in the first mounting slot 111, they are adapted to the space of the first mounting slot 111.

[0036] In this embodiment, the first mounting slot 111 is opened along a first direction, and multiple battery cell modules 20 are arranged along the first direction. The dimensions of the battery cell modules 20 in the second direction are adapted to the dimensions of the first mounting slot 111 in the second direction, and the distance between the cover 12 and the first mounting slot 111 in the third direction is greater than or equal to the thickness of the battery cell module 20 (the dimension of the battery cell module 20 in the third direction when it is placed in the first mounting slot 111). When multiple battery cell modules 20 are accommodated in the first mounting slot 111, the sides of the battery cell modules 20 are attached to the sidewall of the first mounting slot 111, thus enabling the multiple battery cell modules 20 to be adapted to the first mounting slot 111.

[0037] The second mounting slot 112 and the third mounting slot 1211 can be connected. When the cover 12 is installed on the box body 11, the second mounting slot 112 and the third mounting slot 1211 have at least a partial overlap, so that a second mounting position 132 is formed between the second mounting slot 112 and the third mounting slot 1211.

[0038] For example, the second mounting slot 112 and the third mounting slot 1211 are arranged facing each other and are arranged along the third direction. The second mounting position 132 enclosed by the second mounting slot 112 and the third mounting slot 1211 can accommodate multiple battery cell modules 20. The multiple battery cell modules 20 can be respectively housed in the second mounting slot 112 and the third mounting slot 1211, so that the battery cell modules 20 can be arranged in multiple layers stacked in the third direction.

[0039] See Figure 2 and Figure 3 In some feasible implementations, to prevent the multiple battery cell modules 20 housed in the first mounting slot 111 from interfering with each other, the housing 11 is provided with multiple first dividing members 133 within the first mounting slot 111. These dividing members divide the first mounting slot 111 into multiple sub-slots, each sub-slot accommodating one battery cell module 20. It is understood that the multiple first dividing members 133 are spaced apart along a first direction, dividing the first mounting slot 111 into multiple sub-slots arranged along the first direction.

[0040] For example, the first dividing member 133 can be a plate structure integrally formed with the housing 11. The first dividing member 133 protrudes from the bottom end of the housing 11 and extends into the first mounting groove 111 to divide the first mounting groove 111 into multiple sub-grooves. Alternatively, the first dividing member 133 can be detachably connected to the housing 11, for example, by means of a snap-fit ​​structure, a fastening structure, or screws. In this embodiment, the example of the first dividing member 133 being detachably connected to the housing 11 is used for illustration.

[0041] The first mounting slot 111 and the second mounting slot 112 are arranged along a first direction and are not connected to each other. In order to achieve the separation between the first mounting slot 111 and the second mounting slot 112, a spacer is provided between the first mounting slot 111 and the second mounting slot 112 to separate them. For example, in this embodiment, the box 11 has a second dividing member 134 in the second mounting slot 112. The second dividing member 134 is located between the first mounting slot 111 and the second mounting slot 112 and is used to divide the first mounting slot 111 and the second mounting slot 112 into independent spaces.

[0042] For example, in this embodiment of the application, there are two spaced second dividing members 134. The two spaced second dividing members 134 are arranged along a first direction. The gap between the two second dividing members 134 forms a limiting space for defining the position of the battery cell module 20. The battery cell module 20 can be accommodated in the limiting space. The displacement of the battery cell module 20 in the first direction and the second direction is restricted in the limiting space.

[0043] In some feasible embodiments, the battery pack also includes a cooling structure 40, which can dissipate heat from the cell module 20. Specifically, the cooling structure 40 includes a first cooling layer 41, which can dissipate heat from the cell module 20 in the first mounting slot 111 and the second mounting slot 112.

[0044] For example, the first cooling layer 41 is connected to the housing 11 and is located at the bottom of the first mounting slot 111 and the second mounting slot 112. When the battery cell module 20 is housed in the first mounting slot 111 and the second mounting slot 112, the end face of the battery cell module 20 facing the bottom of the slot can abut against the first cooling layer 41.

[0045] For example, the first cooling layer 41 is located between the first partition 133 and the housing 11, and the first cooling layer 41 is located between the second partition 134 and the housing 11. When the first partition 133 and the second partition 134 are connected to the housing 11, the first cooling layer 41 can be clamped on the housing 11 so that the position of the first cooling layer 41 is relatively fixed.

[0046] For example, the first partition 133 and the second partition 134 are both fixedly connected to the housing 11 by screws. The screws pass through the housing 11 from the bottom end. The first cooling layer 41 is provided with a through hole 311 at the position of the screw. The screw can pass through the through hole 311 and after passing through the first cooling layer 41, it can be screwed onto the first partition 133 and the second partition 134, thereby connecting the first partition 133 and the second partition 134 to the housing 11 and fixing the first cooling layer 41 to the housing 11.

[0047] The cell module 20 located in the second placement position is arranged along the third direction. If the first cooling layer 41 is used to dissipate heat from the cell module 20, the heat dissipation effect on the cell module 20 located in the third placement slot 1211 is not good. Therefore, in some feasible ways, the cooling structure 40 in the embodiments of this application also includes a second cooling layer 42, which is used to fully dissipate heat from the cell module 20 in the second placement position.

[0048] The second cooling layer 42 and the first cooling layer 41 are spaced apart. The second cooling layer 42 is located in the second mounting position 132. Specifically, the second cooling layer 42 can be located in the second mounting slot 112 or the third mounting slot 1211, or the second cooling layer 42 can be located between the second mounting slot 112 and the third mounting slot 1211. In this way, the second cooling layer 42 divides the second mounting position 132 into upper and lower sub-mounting spaces, both of which can be used to accommodate the battery cell module 20.

[0049] For example, the second cooling layer 42 can not only be used to divide the second mounting position 132 into upper and lower mounting spaces to facilitate the layering of the cell module 20, but the second cooling layer 42 can also serve as a support structure for the cell module 20 located in the upper mounting space, so that the cell module 20 can be stably placed in the upper mounting space.

[0050] For example, the second cooling layer 42 is located between the second mounting groove 112 and the third mounting groove 1211, separating the second mounting groove 112 and the third mounting groove 1211, so that the second mounting groove 112 forms the lower mounting space and the third mounting groove 1211 forms the upper mounting space.

[0051] For example, the battery module 20 located in the third mounting slot 1211 is supported on the second cooling layer 42. The second cooling layer 42 can dissipate heat for the battery module 20 in the third mounting slot 1211. The bottom end of the battery module 20 located in the second mounting slot 112 can abut against the first cooling layer 41, and the top end can adhere to the second cooling layer 42. In this way, with the cooperation of the first cooling layer 41 and the second cooling layer 42, the heat dissipation effect of the battery module 20 located in the second mounting slot 112 is better.

[0052] For example, both the first cooling layer 41 and the second cooling layer 42 are liquid cooling plates. Both the first cooling layer 41 and the second cooling layer 42 are provided with flow channels. Both the first cooling layer 41 and the second cooling layer 42 are provided with inlet and outlet liquid channels that communicate with the flow channels. External liquid cooling medium can enter the flow channels from the inlet liquid channel and then flow out from the outlet liquid channel to achieve heat dissipation of the battery cell module 20.

[0053] It should be noted that the second cooling layer 42 can be directly connected to the first cooling layer 41, or the second cooling layer 42 can be detachably connected to the housing 11. For example, the second cooling layer 42 can be connected to the side frame of the housing 11 by a snap-fit ​​structure, a fastening structure, or screws. In this embodiment, the second cooling layer 42 is connected to the second dividing member 134 by screws. The second cooling layer 42, the two second dividing members 134, and the housing 11 can enclose and form a limiting space for the battery cell module 20. This limiting space can limit the displacement of the battery cell module 20 located in the second mounting slot 112 in the first direction, the second direction, and the third direction. In addition, the cooperation between the second cooling layer 42 and the receiving part 121 can limit the displacement of the battery cell module 20 located in the third mounting slot 1211 in the third direction.

[0054] See Figures 2 to 4 In some possible implementations, the battery pack also includes a limiting frame 30 located within the third mounting slot 1211 (the upper sub-mounting space). The limiting frame 30 has a limiting space in which the cell module 20 can be accommodated. When the cell module 20 is located within the limiting space of the limiting frame 30, the limiting frame 30 can be arranged around the periphery of the cell module 20, so that the limiting frame 30 is used to restrict the movement of the cell module 20 located in the third mounting slot 1211 in the first and second directions. In this way, the cooperation between the limiting frame 30, the second cooling layer 42, and the receiving portion 121 can restrict the movement of the cell module 20 located in the third mounting slot 1211.

[0055] For example, the limiting frame 30 can be connected to the second cooling layer 42, or the limiting frame 30 can also be connected to the second dividing member 134. In this embodiment, the limiting frame 30 is detachably connected to the second dividing member 134, and the second cooling layer 42 is connected to the limiting frame 30. In this way, the second cooling layer 42 can be fixed in position relative to the box 11 by being connected to the limiting frame 30.

[0056] Without the limiting frame 30, the dimensions of the second dividing member 134 in the third direction need to be increased so that its end can extend into the third mounting slot 1211. A limiting space can be formed between the ends of the two second dividing members 134 away from the second mounting slot 112, and the cell module 20 can be located within this limiting space. The movement of the cell module 20 in the third mounting slot 1211 in the first and second directions can be restricted by the ends of the two second dividing members 134. However, if the position of the cell module 20 in the third mounting slot 1211 is restricted only by increasing the size of the second dividing member 134 set in the housing 11, it will undoubtedly increase the manufacturing cost and difficulty of the second dividing member 134, increase the overall weight of the battery pack, and make it difficult to install the second cooling layer 42 on the second dividing member 134.

[0057] In this embodiment, the movement of the cell module 20 in the first and second directions can be restricted by setting the limiting frame 30. By setting the limiting frame 30, the cell module 20 in the third mounting slot 1211 can be limited without increasing the size of the second dividing member 134, reducing the manufacturing difficulty and cost of the second dividing member 134, and minimizing the increase in the overall weight of the battery pack. In addition, the limiting frame 30 is detachably connected to the second dividing member 134, and the second cooling layer 42 is connected to the limiting frame 30. The second cooling layer 42 and the limiting frame 30 can be installed first and then installed together on the second dividing member 134, which facilitates the installation and removal of the second cooling layer 42 and makes it easier to repair and maintain the second cooling layer 42.

[0058] In some feasible implementations, the limiting frame 30 includes two limiting beams 31 spaced apart and two limiting plates 32 spaced apart. The two ends of the limiting plates 32 are respectively fixed to the two limiting beams 31. The two limiting beams 31 and the two limiting plates 32 form a ring structure. The space enclosed by the limiting beams 31 and the limiting plates 32 is the limiting space for the battery cell module 20.

[0059] For example, two limiting plates 32 are spaced apart along the second direction, and two limiting beams 31 are spaced apart along the first direction. The space enclosed between the two limiting beams 31 and the two limiting plates 32 is a square space.

[0060] For example, the limiting plate 32 consists of two parts: a contact part 321 and a connecting part 322. The connecting part 322 of the limiting plate 32 is a metal part, and both ends of the connecting part 322 are bent. The bent parts at both ends of the connecting part 322 can respectively fit against the opposite end faces of the two limiting beams 31. The bent parts of the connecting part 322 can be connected to the limiting beams 31 by screws to achieve a fixed connection between the limiting plate 32 and the limiting beams 31.

[0061] For example, when the connecting part 322 is connected to the limiting beam 31, the contact part 321 of the limiting plate 32 is set towards the limiting space of the limiting frame 30, and it can abut against the battery cell module 20. The contact part 321 is mainly made of plastic, silicone, or rubber and other materials, which can effectively protect the battery cell module 20 and prevent the surface of the battery cell module 20 from being scratched.

[0062] For example, the limiting beam 31 has a through hole 311 along its length. By providing the through hole 311 to the limiting beam 31, the material used in the limiting beam 31 can be reduced, which can not only reduce its weight, but also reduce its manufacturing cost.

[0063] For example, a reinforcing plate 312 is also provided in the perforation 311 of the limiting beam 31. The reinforcing plate 312 extends along the length direction of the limiting beam 31. By providing the reinforcing plate 312, the overall strength of the limiting beam 31 can be increased, making it less prone to bending and deformation.

[0064] In some feasible embodiments, the limiting beam 31 is provided with a first fastener 33 and a second fastener 34, the limiting beam 31 is connected to the second segment 134 by the first fastener 33, and the second cooling layer 42 is connected to the limiting beam 31 by the second fastener 34.

[0065] In this embodiment, both the first fastener 33 and the second fastener 34 are screws. The second cooling layer 42 has a through hole at the position corresponding to the connection with the limiting beam 31. The second fastener 34 can pass through the hole of the second cooling layer 42 and be screwed onto the limiting beam 31 to fix the second cooling layer 42 onto the limiting beam 31. Then, the limiting beam 31 is fixedly connected to the second dividing piece 134 by the first fastener 33, thereby fixing the position of the second cooling layer 42 relative to the box 11.

[0066] The second cooling layer 42 can be detachably connected to the limiting beam 31 by means of the second fastener 34, so as to realize the separate arrangement of the second cooling layer 42 and the first cooling layer 41, which facilitates the repair and maintenance of the second cooling layer 42, solves the problem of poor maintainability of CTP battery pack, and reduces production and subsequent maintenance costs.

[0067] Secondly, embodiments of this application also provide an electrical device, which includes the aforementioned battery pack, and the battery pack is capable of supplying power to the electrical device.

[0068] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0069] In the description of this application, it should be understood that the terms "comprising" and "having" and any variations thereof used in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0070] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "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 direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized by, The battery pack comprises: a plurality of battery cell modules; a battery box comprising a box body and a box cover, at least part of the structure of the box cover and the box body form a first installation position, a receiving portion is protruded from the box cover away from the box body, a second installation position is formed between the receiving portion and the box body, the first installation position is arranged along the transverse direction of the box body, the second installation position is arranged along the vertical direction of the box body, and the first installation position and the second installation position are both used for accommodating the battery cell modules. The box body is provided with a first installation groove and a second installation groove, the receiving portion has a third installation groove, the first installation groove is used for forming the first installation position, and the second installation groove and the third installation groove are communicatively arranged to form the second installation position between the second installation groove and the third installation groove.

2. The battery pack of claim 1, wherein, The box body is provided with a plurality of first partition pieces in the first installation groove, the plurality of first partition pieces are arranged at intervals along a first direction, and the plurality of partition pieces divide the first installation groove into a plurality of sub-grooves.

3. The battery pack of claim 2, wherein, The box body is provided with a second partition piece at intervals in the second installation groove, and the gap between the second partition pieces forms a limiting space for limiting the position of the battery cell module.

4. The battery pack of claim 2, wherein, The cooling structure is further provided with a first cooling layer, the first cooling layer is connected to the box body, and the first cooling layer is located at the groove bottom of the first installation groove and the second installation groove.

5. The battery pack of claim 4, wherein, The cooling structure further comprises a second cooling layer, the second cooling layer is detachably connected to the second partition piece, the second cooling layer and the first cooling layer are arranged at intervals, the second cooling layer is located in the second installation position, and the second cooling layer divides the second installation position into two sub-installation spaces.

6. The battery pack of claim 5, wherein, The limiting frame is further provided with a limiting space, and the battery cell module can be accommodated in the limiting space.

7. The battery pack of claim 6, wherein, The limiting frame comprises two limiting beams arranged at intervals and two limiting plates arranged at intervals, both ends of the limiting plate are fixed on the two limiting beams respectively, and the limiting space is formed by surrounding the two limiting beams and the two limiting plates.

8. The battery pack of claim 7, wherein, The limiting beam is provided with a first fastener and a second fastener, the limiting beam is connected to the second partition piece through the first fastener, and the second cooling layer is connected to the limiting beam through the second fastener.

9. The battery pack of claim 8, wherein, The battery pack comprises the battery pack according to any one of claims 1-9.

10. An electric device, characterized by The battery pack comprises the battery pack according to any one of claims 1-9.

Images