Battery pack and electric device

Abstract

The utility model discloses a kind of battery pack and electrical equipment, it is related to battery field.The battery pack includes box and electric core module, box has accommodating cavity, electric core module is set in accommodating cavity, electric core module includes multiple electric core, busbar assembly, FPC and end plate, multiple electric core is along second direction and constitutes electric core queue, electric core queue has multiple tab on at least one side in its first direction, first direction is the width direction of box, second direction is the length direction of box;Busbar assembly is set in at least one side of electric core queue in first direction, and is connected with multiple tab;FPC is set in at least one side of electric core queue in third direction, and is connected with busbar assembly, third direction is the height direction of box;End plate is set in at least one side of electric core queue in second direction.The battery pack provided by the utility model has the characteristics of more compact structure, higher space utilization.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a battery pack and an electrical device. Background Technology

[0002] Currently, in order to accommodate the lateral extension of the soft-pack battery terminals, the CCS components, flexible printed circuit boards (FPCs), and other components of such battery packs are arranged in a lateral sequence relative to the soft-pack batteries, occupying too much lateral space inside the battery pack and resulting in low space utilization. Utility Model Content

[0003] The purpose of this utility model is to provide a battery pack that has a more compact structure and higher space utilization.

[0004] Another objective of this utility model is to provide an electrical device that is lightweight, reliable, and safe.

[0005] The embodiments of this utility model provide a technical solution: A battery pack includes a housing and a cell module. The housing has a receiving cavity, and the cell module is disposed in the receiving cavity. The cell module includes a plurality of cells, a bus assembly, an FPC, and an end plate. The plurality of cells form a cell queue along a second direction. The cell queue has a plurality of tabs on at least one side of its first direction. The first direction is the width direction of the housing, and the second direction is the length direction of the housing. The bus assembly is disposed on at least one side of the cell queue in the first direction and is connected to the plurality of tabs; The FPC is disposed on at least one side of the cell queue in the third direction and is connected to the bus assembly, wherein the third direction is the height direction of the housing; The end plate is disposed on at least one side of the cell queue in the second direction.

[0006] In an optional embodiment, the bus assembly includes a bracket and a plurality of buses disposed on the bracket, wherein the plurality of buses on the bracket are connected to a plurality of tabs on the corresponding side of the cell queue.

[0007] In an optional embodiment, the bracket is provided with an isolation protrusion extending along the first direction, the isolation protrusion being used to isolate two adjacent electrode tabs, and the isolation protrusion having a weight reduction groove.

[0008] In an optional embodiment, the bus assembly further includes a protective plate covering the outer side of the bus along the first direction; the protective plate extends along the third direction, with its two sides bent to form bent edges, the two bent edges being used for fixed connection with the two ends of the bracket along the third direction.

[0009] In an optional embodiment, the housing is provided with a module positioning pin, and at least one end plate is provided with a module positioning hole, wherein the module positioning pin is inserted into the module positioning hole.

[0010] In an optional embodiment, the bus assembly further includes a high-voltage output bus, which is disposed on one side of the cell array along the first direction; The end plate is provided with a transfer fixing part, and the high voltage output bar has a bent structure, including a bent part extending along a first direction, and the bent part is fixed to the transfer fixing part.

[0011] In an optional embodiment, the FPC is provided with an output signal component on one side along the second direction, and the end plate is provided with a plug-in slot, in which the output signal component is embedded.

[0012] In an optional embodiment, the end plate is provided with first pin holes on both sides corresponding to the plug-in slot, and the output signal component is fixed to the end plate by a connector that engages with the first pin holes.

[0013] In an optional embodiment, the cell module further includes a strap that bundles the cell array to the end plate in a plane formed by the second direction and the third direction; The end plate is provided with a strap limiting groove, and the strap is embedded in the strap limiting groove.

[0014] This utility model also provides an electrical device, including the aforementioned battery pack. The battery pack includes a housing and a cell module. The housing has a receiving cavity, and the cell module is disposed in the receiving cavity. The cell module includes multiple cells, a bus assembly, an FPC, and an end plate. The multiple cells form a cell queue along a second direction. The cell queue has multiple tabs on at least one side in a first direction, where the first direction is the width direction of the housing and the second direction is the length direction of the housing. The bus assembly is disposed on at least one side of the cell queue in the first direction and is connected to the multiple tabs. The FPC is disposed on at least one side of the cell queue in a third direction and is connected to the bus assembly, where the third direction is the height direction of the housing. The end plate is disposed on at least one side of the cell queue in the second direction.

[0015] Compared to existing technologies, the battery pack provided by this invention features multiple battery cells arranged sequentially along the length of the housing to form a cell array. The cell array has tabs on at least one side of the housing width direction. A busbar assembly is disposed on at least one side of the cell array in the housing width direction and connected to the tabs. An FPC is disposed on at least one side of the cell array in the housing height direction, and an end plate is disposed on at least one side of the cell array in the housing length direction. That is, the busbar assembly, FPC, and end plate are arranged around the cell array, achieving full utilization of space in multiple directions of the cell array, forming a more compact overall structure, and avoiding wasted internal space of the housing. Therefore, the beneficial effects of the battery pack provided by this invention include: a more compact structure and higher space utilization. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 An exploded view of the battery pack provided in an embodiment of this utility model; Figure 2 for Figure 1 An exploded view of a battery module; Figure 3 for Figure 1 Another exploded view of the CEC module; Figure 4 for Figure 2 Schematic diagram of the middle plate; Figure 5 This is a partial structural diagram of a battery cell module; Figure 6 This is a schematic diagram of the connection structure between the bus assembly and the FPC from one perspective. Figure 7 for Figure 6 Enlarged view of region A in the middle; Figure 8 This is a schematic diagram of the connection structure between the bus assembly and the FPC from another perspective; Figure 9 for Figure 8 A magnified view of region B in the middle.

[0018] Icons: 100-Battery Pack; 110-Casing; 111-Receiving Cavity; 112-Casing Cover; 113-Frame; 120-Cell Module; 121-Bus Bus Assembly; 1211-Bracket; 1212-Bus Bus; 1213-Isolation Protrusion; 1214-Weight Reduction Hole; 1215-Weight Reduction Slot; 1216-High Voltage Output Bus; 1217-Bending Section; 1218-Protection Board; 1219-Bending Edge; 122-FPC; 1221 - Output signal assembly; 123- Cell queue; 1231- Electrode; 124- End plate; 1241- Module positioning hole; 1242- Adapter fixing part; 1243- Strap limiting groove; 1244- Auxiliary lifting hole; 1245- Insertion slot; 1246- First pin hole; 1247- Connector; 125- Insulating protective plate; 126- Strap; 127- Upper protective plate; 128- Lower protective plate; 131- Hot melt column; 132- Second pin hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] Example Please see Figure 1 , Figure 1 The diagram shown is an exploded view of the battery pack 100 provided in this embodiment.

[0027] The battery pack 100 provided in this embodiment includes a housing 110 and a cell module 120. The housing 110 has a receiving cavity 111, and the cell module 120 is disposed in the receiving cavity 111.

[0028] In fact, the box 110 in this embodiment includes a box cover 112 and a frame 113. The opening of the frame 113 faces upward, and the box cover 112 covers the opening of the frame 113 to form a receiving cavity 111.

[0029] Preferably, in this embodiment, the cover 112 is made of lightweight PCM material. PCM is a pre-coated steel plate material, using cold-rolled steel plate or galvanized steel plate as the base material, coated with a high-molecular polyester resin coating and cured at high temperature, thereby forming a robust protective layer, increasing the mechanical strength of the cover 112 and providing reliable physical protection for the battery pack 100. Although PCM is based on a metal substrate, its overall density is relatively low, significantly reducing the weight of the battery pack 100 compared to traditional metal materials. Furthermore, the high-molecular polyester resin coating has excellent electrical insulation properties, effectively preventing electrical short circuits inside the battery pack 100 and improving the safety and reliability of the battery pack 100. The overall cost of PCM material and its molding process is relatively low, thus effectively controlling costs and improving cost-effectiveness. Please refer to the following: Figure 2 and Figure 3 , Figure 2 The diagram shown is an exploded view of the battery cell module 120. Figure 3 The diagram shown is another exploded view of the battery cell module 120.

[0030] The battery cell module 120 includes multiple battery cells, a bus assembly 121, an FPC 122, and an end plate 124. The multiple battery cells form a battery cell queue 123 along a second direction. The battery cell queue 123 has multiple tabs 1231 on at least one side in a first direction. The battery cells can be pouch cells. The FPC can collect information such as voltage and temperature of the battery cell module.

[0031] Busbar assembly 121 is disposed on at least one side of cell queue 123 in a first direction and connected to a plurality of tabs 1231. FPC 122 is disposed on at least one side of cell queue 123 in a third direction and connected to busbar assembly 121, the third direction being the height direction of housing 110. End plate 124 is disposed on at least one side of cell queue 123 in a second direction.

[0032] like Figure 1 and Figure 3 As shown, the first direction is the direction pointed to by the X arrow, which in this embodiment is the width direction of the box 110; the second direction is the direction pointed to by the Y arrow, which in this embodiment is the length direction of the box 110; and the third direction is the direction pointed to by the Z arrow, which in this embodiment is the height direction of the box 110.

[0033] Preferably, in this embodiment, the cell queue 123 has multiple tabs 1231 on both sides in the first direction, the bus assembly 121 is disposed on both sides of the cell queue 123 in the first direction, the FPC 122 is disposed above the cell queue 123 in the third direction, and the end plate 124 is disposed on both sides of the cell queue 123 in the second direction.

[0034] As can be seen, in this embodiment, the busbar assembly 121, FPC 122, and end plate 124 are respectively arranged around the cell array 123, realizing full utilization of space in multiple directions of the cell array 123, forming a more compact overall structure, and avoiding waste of internal space in the housing 110. Therefore, the battery pack 100 provided by this utility model has the characteristics of more compact structure and higher space utilization, thereby significantly improving the energy density of the battery pack 100.

[0035] Please refer to the following: Figure 4 , Figure 4 The diagram shown is a structural schematic of end plate 124.

[0036] In this embodiment, the housing 110 is provided with module positioning pins, and at least one end plate 124 is provided with module positioning holes 1241, and the module positioning pins are inserted and fixed to the module positioning holes 1241.

[0037] It is understandable that the module positioning pin can be set on either the cover 112 or the frame 113. By inserting the module positioning pin into the module positioning hole 1241 on the end plate 124, the end plate 124 is positioned within the housing 110, thereby positioning the battery cell module 120 within the housing 110.

[0038] Please refer to the following: Figure 5 and Figure 6 , Figure 5 The diagram shown is a partial structural schematic of the battery cell module 120. Figure 6 The diagram shows the connection structure of bus assembly 121 and FPC 122 from one perspective.

[0039] Bus assembly 121 includes a bracket 1211 and multiple buses 1212 disposed on the bracket 1211. The multiple buses 1212 on the bracket 1211 are connected to multiple tabs 1231 on the corresponding side of the cell queue 123. FPC 122 is connected to the multiple buses 1212 respectively. Specifically, the multiple tabs 1231 corresponding to the cell queue 123 can be soldered to the bus 1212. FPC 122 includes a main circuit board and sampling terminals. The sampling terminals can be metal sheets, or in some other embodiments, sheet conductors made of other conductive materials. The multiple sampling terminals are electrically connected to the main circuit board respectively. One end of the sampling terminal extends away from the main circuit board, and the other end is connected to the bus 1212. The connection method is not limited to ultrasonic welding, laser soldering, or mechanical connection.

[0040] In this embodiment, multiple busbars 1212 are arranged sequentially along the second direction in a vertical plane, and the FPC 122 extends along the second direction in a horizontal plane. That is, the plane containing the multiple busbars 1212 is perpendicular to the plane containing the FPC 122. This allows for full utilization of space in the vertical direction, improving space efficiency, and reducing spatial interference between the FPC 122 and the busbars 1212. The overall structure is compact and efficient. Specifically, the FPC 122 main circuit board extends along the second direction in a horizontal plane, and one end of the sampling terminal extends away from the main circuit board and bends to connect with the multiple busbars 1212. Because the FPC 122 is very thin and flexible, placing the FPC 122 main circuit board in a horizontal plane allows for easy placement of various electronic components (such as chips, capacitors, etc.), and using the horizontal plane as a stable mounting base improves installation ease and stability. One end of the sampling terminal is connected to the horizontal FPC122 main circuit board, and the other end is connected to the vertical bus 1212. This allows for the absorption of assembly tolerances or thermal expansion and contraction stresses, reducing mechanical stress on the connection points and improving long-term reliability. Furthermore, during assembly, the bus 1212 and the FPC122 main circuit board can be independently installed and fixed on their respective planes. Finally, the sampling terminal on the FPC122 is simply bent and fixed to the bus 1212 to complete the connection. This modular assembly method is generally simpler and more efficient than direct wiring in a complex three-dimensional space. More importantly, the two planes are vertically separated, providing greater creepage distance and clearance for the high-voltage, high-current bus 1212 and the low-voltage, small-signal FPC122 circuits in physical space. This helps reduce the risk of high-voltage interference to low-voltage circuits and enhances the safety of the battery pack 100.

[0041] In this embodiment, the busbar assembly 121 further includes a protective plate 1218, which covers the outer side of the busbar 1212 along the first direction. The protective plate 1218 extends along the third direction, and its two sides are bent to form bent edges 1219. The two bent edges 1219 are used to fix and connect to the two ends of the bracket 1211 along the third direction.

[0042] It is understandable that, since the protection plate 1218 is bent on both sides to form bent edges 1219, and the two bent edges 1219 are fixedly connected to the two ends of the bracket 1211 in the third direction, the bracket 1211 is equivalent to being embedded in the groove structure formed by the main body of the protection plate 1218 and the two bent edges 1219, and is insulated and physically protected by the protection plate 1218, which further improves the safety of the battery pack 100.

[0043] Preferably, in this embodiment, the protective plate 1218 is fixedly connected to the bracket 1211 by a pin. In another embodiment, depending on the actual application conditions, the protective plate 1218 and the bracket 1211 can also be connected and fixed by a connection method such as adhesive or snap-fit.

[0044] The bus assembly 121 also includes a high-voltage output bus 1216, which is located on one side of the cell array 123 along the first direction and connected to the bus 1212. The end plate 124 is provided with a transition fixing part 1242. The high-voltage output bus 1216 has a bent structure, including a bent part 1217 extending along the first direction. The bent part 1217 is fixed to the transition fixing part 1242. The connection method is not limited to welding or mechanical connection (e.g., bolts).

[0045] In fact, the end plate 124 has two walls that form an angle with each other, one of which is in a vertical plane and the other is in a horizontal plane. The transition fixing part 1242 is provided on the wall in the horizontal plane. The high-voltage output busbar 1216 with the bent structure also has a connecting part that forms an angle with the bending part 1217. The connecting part contacts the wall in the vertical plane of the end plate 124, and the bending part 1217 contacts the wall where the transition fixing part 1242 is located and is connected and fixed to the transition fixing part 1242, thereby making full use of space.

[0046] As can be seen, the high-voltage output busbar 1216 is limited by the two mutually angled walls on the end plate 124, which facilitates the installation and fixation of the high-voltage output busbar 1216. Furthermore, the end plate 124 is made of high-strength plastic, which not only meets the strength requirements but also has insulation properties, so installing the high-voltage output busbar 1216 on the end plate 124 can form an ideal insulation and protection effect.

[0047] The FPC122 has an output signal component 1221 on one side along the second direction, and the end plate 124 has a plug-in slot 1245, in which the output signal component 1221 is embedded.

[0048] In fact, to reliably fix the FPC122 and the output signal assembly 1221, in this embodiment, first pin holes 1246 are provided on both sides of the end plate 124 corresponding to the plug-in slot 1245. The output signal assembly 1221 is fixed to the end plate 124 by a connector 1247 that engages with the first pin holes 1246. Preferably, the connector 1247 in this embodiment is a pin.

[0049] The battery cell module 120 also includes a strap 126, which bundles the battery cell array 123 and the end plate 124 in a plane formed by the second direction and the third direction. A strap limiting groove 1243 is provided on the bottom of the end plate 124, and the strap 126 is embedded in the strap limiting groove 1243.

[0050] Understandably, the strap 126 is embedded in the strap limiting groove 1243. On one hand, the two side walls of the strap limiting groove 1243 limit the strap 126 in the first direction, preventing the strap 126 from slipping relative to the cell module 120 in the first direction, avoiding the strap 126 from loosening due to vibration or impact, and ensuring the stability of the bundling structure. On the other hand, it prevents the strap 126 from cutting the edge of the end plate 124, reducing the risk of deformation or breakage of the end plate 124, especially when it is made of plastic. The bundling pressure is concentrated in the high-strength area of ​​the end plate 124, preventing the pressure from being directly transmitted to the fragile cell shell and reducing the probability of cell damage.

[0051] To facilitate the installation of the battery cell module 120, in this embodiment, the end plate 124 is also provided with an auxiliary lifting hole 1244 for use with lifting tools. In this embodiment, the auxiliary lifting hole 1244 is located at the top of the end plate 124, and the lifting force is evenly transmitted to the entire module frame through the top of the end plate 124, avoiding deformation caused by local stress concentration. The top auxiliary lifting hole 1244 facilitates vertical gripping by the robotic arm lifting tool, which is suitable for high-speed handling and positioning in automated production lines. At the same time, the strap limiting groove 1243 is located at the bottom to avoid interference between the two and also helps to improve production and maintenance efficiency.

[0052] Please refer to the following: Figure 7 , Figure 7 As shown Figure 6 An enlarged schematic diagram of region A in the middle.

[0053] The bracket 1211 is provided with an isolation protrusion 1213 extending along a first direction. The isolation protrusion 1213 is used to isolate two adjacent tabs 1231. It can be understood that the bracket 1211 and the isolation protrusion 1213 are insulating. There are multiple isolation protrusions 1213, and one isolation protrusion 1213 is distributed between any two adjacent tabs 1231. That is, any isolation protrusion 1213 can provide insulation and isolation between adjacent tabs 1231 to prevent short circuit.

[0054] To reduce overall weight and achieve lightweighting, in this embodiment, every spaced isolation protrusion 1213 on the bracket 1211 has weight-reducing holes 1214 at its ends and bottom, and multiple baffles of the same shape and angle are formed in the middle part of the isolation protrusion 1213, thus creating multiple weight-reducing grooves 1215. This ensures both support and isolation while reducing weight. Furthermore, it also helps dissipate heat.

[0055] Please refer to the following: Figure 8 and Figure 9 , Figure 8 The diagram shown is a schematic representation of the connection structure between bus assembly 121 and FPC 122 from another perspective. Figure 9 As shown Figure 8 A magnified view of region B in the middle.

[0056] In this embodiment, the bracket 1211 also has a heat-fusion column 131, and a through-hole structure is provided on the busbar 1212. The heat-fusion column 131 penetrates the through-hole structure of the busbar 1212 to achieve connection and fixation of the busbar 1212. In another embodiment, depending on the actual application conditions, the busbar 1212 can also be connected and fixed to the bracket 1211 using other connection methods. Furthermore, in this embodiment, the bracket 1211 also has a second pin hole 132 for a pin to pass through to fix the protective plate 1218.

[0057] In this embodiment, the cell module 120 further includes two insulating protective plates 125. The two insulating protective plates 125 are respectively disposed at both ends of the cell queue 123 in the second direction, and any insulating protective plate 125 is located between the end plate 124 of the corresponding end and the cell queue 123.

[0058] In addition, the cell module 120 also includes an upper protective plate 127 and a lower protective plate 128. The upper protective plate 127 and the lower protective plate 128 are respectively disposed on both sides of the cell queue 123 in the third direction, and the upper protective plate 127 is located between the two FPCs 122 and the cell queue 123.

[0059] It is understandable that the insulating protective plate 125, upper protective plate 127, lower protective plate 128, and insulating end plate 124, together with the cell array 123, are bundled into an integral structure by the strap 126, further improving the overall structural compactness. The insulating protective plate 125, upper protective plate 127, and lower protective plate 128 can protect the cells from damage and also have an insulating isolation function, achieving better insulation protection. At the same time, the protective plates directly reduce the possibility of short circuits caused by physical damage, vibration, compression, or manufacturing tolerances, helping to maintain the performance and lifespan of the cells and improve the reliability of the entire cell module 120 and even the battery pack 100 during long-term use. In summary, the battery pack 100 provided in this embodiment has the characteristics of a more compact structure and higher space utilization.

[0060] In addition, this embodiment also provides an electrical device, including the aforementioned battery pack 100. Benefiting from the advantages of the battery pack 100, the electrical device provided in this embodiment also has the characteristics of a more compact structure and a smaller footprint.

[0061] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, The device includes a housing (110) and a battery module (120). The housing (110) has a receiving cavity (111), and the battery module (120) is disposed in the receiving cavity (111). The battery module (120) includes multiple battery cells, a bus assembly (121), an FPC (122), and an end plate (124). The multiple battery cells form a battery queue (123) along a second direction (Y). The battery queue (123) has multiple tabs (1231) on at least one side in a first direction (X). The first direction (X) is the width direction of the housing (110), and the second direction (Y) is the length direction of the housing (110). The bus assembly (121) is disposed on at least one side of the cell queue (123) in the first direction (X) and is connected to the plurality of tabs (1231); The FPC (122) is disposed on at least one side of the cell queue (123) in a third direction (Z) and is connected to the bus assembly (121), wherein the third direction (Z) is the height direction of the housing (110); The end plate (124) is disposed on at least one side of the cell queue (123) in the second direction (Y).

2. The battery pack according to claim 1, characterized in that, The bus assembly (121) includes a bracket (1211) and a plurality of busbars (1212) disposed on the bracket (1211). The plurality of busbars (1212) on the bracket (1211) are connected to a plurality of tabs (1231) on the corresponding side of the cell queue (123).

3. The battery pack according to claim 2, characterized in that, The bracket (1211) is provided with an isolation protrusion (1213) extending along the first direction (X), the isolation protrusion (1213) is used to isolate two adjacent tabs (1231), and a weight reduction groove (1215) is provided on the isolation protrusion (1213).

4. The battery pack according to claim 3, characterized in that, The busbar assembly (121) further includes a protective plate (1218), which covers the outside of the busbar (1212) along the first direction (X); the protective plate (1218) extends along the third direction (Z) and bends on both sides to form bent edges (1219), and the two bent edges (1219) are used to fix them to the two ends of the bracket (1211) along the third direction (Z).

5. The battery pack according to claim 1, characterized in that, The housing (110) is provided with a module positioning pin, and at least one of the end plates (124) is provided with a module positioning hole (1241), and the module positioning pin is inserted into the module positioning hole (1241).

6. The battery pack according to claim 5, characterized in that, The bus assembly (121) further includes a high-voltage output bus (1216), which is located on one side of the cell array (123) along the first direction (X); The end plate (124) is provided with a transfer fixing part (1242), and the high voltage output bar (1216) has a bent structure, including a bent part (1217) extending along the first direction (X), and the bent part (1217) is fixed to the transfer fixing part (1242).

7. The battery pack according to claim 1, characterized in that, The FPC (122) is provided with an output signal component (1221) on one side along the second direction (Y), and the end plate (124) is provided with a plug-in slot (1245), and the output signal component (1221) is embedded in the plug-in slot (1245).

8. The battery pack according to claim 7, characterized in that, The end plate (124) is provided with first pin holes (1246) on both sides corresponding to the plug-in slot (1245). The output signal component (1221) is fixed to the end plate (124) by a connector (1247) that engages with the first pin holes (1246).

9. The battery pack according to claim 1, characterized in that, The battery cell module also includes a strap (126) that bundles the battery cell array (123) and the end plate (124) in a plane formed by the second direction (Y) and the third direction (Z). The end plate (124) is provided with a strap limiting groove (1243), and the strap (126) is embedded in the strap limiting groove (1243).

10. An electrical appliance, characterized in that, Includes the battery pack (100) as described in any one of claims 1-9.

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