Battery pack and energy storage power supply

Abstract

The utility model discloses a battery pack and an energy storage power supply. The utility model further discloses a battery pack, the battery pack comprises the battery cells, the support and the electric connecting piece, the electric connecting piece comprises a main body and a connecting part electrically connected with the main body, the electric connecting piece is configured to be arranged on the support, and the connecting part is connected with the tabs of the battery cells in a buckled mode so as to be electrically connected with the battery cells. According to the battery pack provided by the invention, the connecting part is arranged on the electric connecting piece main body and is used for being in buckled connection with the tab of the battery cell, so that the electric connection between the battery cell and the electric connecting piece is realized, welding operation is not needed, the process complexity and the operation difficulty are favorably reduced, and the production cost is favorably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage devices, and more particularly to a battery pack and an energy storage power supply. BACKGROUND

[0002] The battery pack includes a plurality of battery cells, a bracket, and a bus bar. The plurality of battery cells are fixed by the bracket, and the bus bar is arranged on the bracket and welded with the electrodes of the battery cells by laser welding. However, the laser welding process of the bus bar and the electrodes is complex, difficult to operate, and high in production cost. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a battery pack and an energy storage power supply to solve at least one of the above technical problems.

[0004] The battery pack of the present application includes:

[0005] a battery cell;

[0006] a bracket;

[0007] an electrical connector, the electrical connector including a main body and a connecting portion electrically connected with the main body, the electrical connector being configured to be arranged on the bracket, and the connecting portion being buckled with the tab of the battery cell to electrically connect the battery cell.

[0008] The battery pack provided by the present application realizes the electrical connection of the battery cell and the electrical connector by arranging the connecting portion on the main body of the electrical connector for buckling with the tab of the battery cell, thereby eliminating the welding operation, reducing the complexity of the process and the difficulty of operation, and reducing the production cost.

[0009] In some embodiments, the main body is a connecting sheet, and the connecting portion is a connecting sleeve formed on the connecting sheet and matched with the tab.

[0010] In this way, the electrical connector and the battery cell are buckled with the tab through the connecting sleeve, which facilitates the installation of the battery cell.

[0011] In some embodiments, the electrical connector further includes a spring sheet, the spring sheet being arranged on the inner side wall of the connecting sleeve, and the spring sheet being configured to be compressed and pressed against the side surface of the tab when the tab is inserted into the connecting sleeve.

[0012] In this way, the spring sheet can use its elasticity to more firmly fix the tab in the connecting sleeve, avoiding the disconnection of the battery cell caused by the disengagement of the tab from the connecting sleeve due to vibration or impact.

[0013] In some embodiments, the number of spring sheets is a plurality, and the plurality of spring sheets are uniformly arranged along the inner side wall of the connecting sleeve.

[0014] In this way, the plurality of elastic sheets simultaneously press the fixed tab, which is conducive to improving the firmness of the fixed tab, and can also make the stress on the tab more uniform, thereby improving the service life of the battery cell.

[0015] In some embodiments, the bracket includes a first surface and a second surface opposite to the first surface, the bracket is formed with a first fixing groove on the first surface, and a second fixing groove is formed on the bottom surface of the first fixing groove, the first fixing groove is configured to fix the battery cell, and the second fixing groove is configured to fix the main body.

[0016] In this way, the fixing groove is used to fix the battery cell to prevent displacement of the battery cell after installation, and the installation groove can limit the electrical connector to avoid displacement of the electrical connector during connection to cause accidental touch, thereby causing short circuit of the battery cell.

[0017] In some embodiments, the bottom surface of the second fixing groove is formed with a first opening hole corresponding to the connecting portion, the first opening hole penetrates the second surface, and the first opening hole is configured to expose the main body.

[0018] In this way, the electrical connector is exposed from the first opening hole, which facilitates connection of the electrical connector with external components for voltage acquisition.

[0019] In some embodiments, the bottom surface of the first fixing groove is formed with a second opening hole corresponding to the tab, the second opening hole penetrates the second surface, and the second opening hole is configured to expose the tab.

[0020] In this way, the tab is exposed from the second opening hole, which facilitates connection of the battery cell with external components.

[0021] In some embodiments, the main body is further provided with a connecting hole, and the battery pack further includes a fastener, the fastener passes through the connecting hole and is connected with the bracket, so that the main body can be detachably installed on the bracket.

[0022] In this way, the electrical connector is detachably connected with the bracket through the fastener, which facilitates maintenance and replacement of the electrical connector and the bracket.

[0023] In some embodiments, the battery cell is a single-tab battery cell, and the electrical connector is arranged on the side of the bracket close to the tab.

[0024] In this way, the single-tab battery cell is connected with the tab on one side and the connecting portion, which is conducive to reducing the difficulty of connection between the tab and the connecting portion.

[0025] The energy storage power supply of the present application includes the battery pack of any one of the above.

[0026] Additional aspects and advantages of the embodiments of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or can be learned by practice of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0028] Figure 1 is a structural schematic diagram of a battery pack of an embodiment of the present application;

[0029] Figure 2 is a structural schematic diagram of a first bracket of a battery pack of an embodiment of the present application;

[0030] Figure 3 is a structural schematic diagram of a second bracket of a battery pack of an embodiment of the present application;

[0031] Figure 4 is a structural schematic diagram of an electrical connector of a battery pack of an embodiment of the present application.

[0032] Main element symbol explanation: battery pack 100, battery cell 10, tab 11, positive electrode 111, negative electrode 112, bracket 20, first bracket 21, connecting slot hole 211, first surface 212, first fixing groove 213, second fixing groove 214, first opening hole 215, second opening hole 216, second surface 217, second bracket 22, connecting column 221, reinforcing rib 2211, third fixing groove 222, electrical connector 30, main body 31, connecting hole 311, connecting part 32, elastic sheet 321, fastener 40. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein like or similar constituent elements or features may be denoted by like reference characters, and the embodiments described below are not intended to limit the scope of the present application. The embodiments described below are examples only, and are not exhaustive of possible implementations of the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships as shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless explicitly specified and limited otherwise.

[0034] In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounting", "connecting", "connection" should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless explicitly specified and limited otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0036] The disclosure herein provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplification of the present application disclosure, the components and arrangements of the particular examples are described herein. They are, of course, merely examples and are in no way limiting of the present application. Furthermore, the present application can be implemented in a variety of different examples and the application can repeat reference numerals and / or reference letters in different examples and this repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and / or configurations discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will appreciate that other processes and / or materials can be used.

[0037] The battery pack includes a plurality of battery cells, a bracket, and a bus bar, the plurality of battery cells are fixed by the bracket, and the bus bar is arranged on the bracket and welded with the electrodes of the battery cells by laser welding. However, the laser welding process of the bus bar and the electrodes is complex, difficult to operate, and high in production cost.

[0038] Referring to Figure 1 The application provides an energy storage power supply, which comprises an inverter and a battery pack 100. The battery pack 100 comprises battery cells 10, a bracket 20, and an electrical connecting piece 30. The electrical connecting piece 30 comprises a main body 31 and a connecting part 32 electrically connected with the main body 31. The electrical connecting piece 30 is arranged on the bracket 20, and the connecting part 32 is buckled with the tab 11 of the battery cell 10 to electrically connect the battery cell 10.

[0039] The battery pack 100 provided by the application is buckled with the tab 11 of the battery cell 10 through the connecting part 32 arranged on the main body 31 of the electrical connecting piece 30, so that the electrical connection between the battery cell 10 and the electrical connecting piece 30 is realized without welding operation, which is beneficial to reduce the complexity of the process and the operation difficulty and reduce the production cost.

[0040] Specifically, referring to Figures 1 to 4 In the embodiment of the application, the bracket 20 comprises a first bracket 21 and a second bracket 22. The first bracket 21 is provided with a plurality of connecting grooves 211 arranged at the edges of the first bracket 21. The second bracket 22 is provided with a plurality of connecting columns 221 corresponding to the positions of the connecting grooves 211.

[0041] In some embodiments, the connecting column 221 is long in length, and a reinforcing rib is arranged on the side surface of the connecting groove 211 to improve the structural strength. The reinforcing rib is triangular or trapezoidal, one end of the reinforcing rib is connected to the connecting column 221, and the other end of the first reinforcing rib is connected to the second bracket 22.

[0042] Further, each connecting column 221 is connected with a plurality of first reinforcing ribs, and in some embodiments, each connecting column 221 is connected with at least four reinforcing ribs, which are uniformly arranged on the side wall of the connecting column 221.

[0043] Further, the bracket 20 further comprises a screw, which is screwed through the connecting slot hole 211 and the connecting column 221, so that the first bracket 21 and the second bracket 22 can be detachably connected. The screw connection has the advantages of simple structure, convenient disassembly, strong bearing capacity, etc. The first bracket 21 and the second bracket 22 enclose an installation area, and a plurality of battery cells 10 are installed in the installation area enclosed by the first bracket 21 and the second bracket 22. Among them, bolt connection is one of the most common ways of fastening connection between the second bracket 22 and the first bracket 21.

[0044] Further, according to the application requirements, different types of screws can be selected, such as ordinary screws, high-strength screws, etc. High-strength screws have better performance when bearing larger loads.

[0045] It should be noted that the fastening torque of the screw connection is one of the key parameters, which needs to be calculated and set according to the specific materials and structures. The appropriate fastening torque can ensure the stability and safety of the connection.

[0046] In some embodiments, the second bracket 22 and the first bracket 21 can also be connected by other connecting members or fasteners 40. Among them, the connecting member is a component that connects the second bracket 22 and the first bracket 21 together, such as a bolt, a nut, a washer, etc. The selection and installation of the connecting member have an important influence on the stability and safety of the connection. The connecting member material should have good mechanical properties and chemical stability to adapt to different working environments and load requirements. The size of the connecting member should be calculated and determined according to the size and load requirements of the second bracket 22 and the first bracket 21.

[0047] The fastener 40 is a component used to fix the connecting member, such as a wrench, a screwdriver, etc. The selection and use of the fastener 40 have an important influence on the fastening degree and stability of the connection. According to the type and size of the connecting member, the appropriate fastener 40 is selected. When using the fastener 40, the size of the fastening force needs to be controlled to ensure the stability and safety of the connection. Excessive fastening force may cause damage or deformation of the connecting member, and insufficient fastening force may cause the connection to be not firm.

[0048] In some embodiments, the second bracket 22 and the first bracket 21 can also be connected together by welding. The welding connection has the advantages of high connection strength and good sealing, but compared with the bolt connection, it is more difficult to disassemble and maintain.

[0049] Further, according to the material and application requirements, different welding types can be selected, such as spot welding, seam welding, etc.

[0050] It should be noted that the welding quality directly affects the stability and safety of the connection. Therefore, it is necessary to strictly control the welding parameters and quality during the welding process to ensure that the welding quality meets the relevant standards and requirements.

[0051] Further, the connecting slot hole 211 and the first support 21 are an integrated structure formed by integral machining, and similarly, the connecting column 221 and the second support 22 are also an integrated structure formed by integral machining.

[0052] The electrical connector 30 is a busbar, which is a device with high conductivity, high stability and reliability, used for concentrating or distributing electric current. In the electrical field, the busbar is also called a busbar, busbar, etc., used for connecting multiple electrical lines. The busbar is made of high-conductivity material to ensure efficient current transmission. The busbar also has good current carrying and transmission capacity, and can quickly respond to power grid changes to ensure stable operation of the power grid.

[0053] The electrical connector 30 can be connected by alternately connecting the positive electrode 111 and the negative electrode 112 of at least one battery cell 10 in sequence, so that the positive electrode 111 and the negative electrode 112 connected to the two ends of the electrical connector 30 are respectively the positive connection port and the negative connection port, that is, the electrical connector 30 is connected in series with at least one battery cell 10, so that at least one battery cell 10 forms a large-voltage output power supply, thereby ensuring that the user's power demand is met.

[0054] Further, in the embodiment of the present application, the main body 31 and the connecting sleeve are also an integrated structure formed by integral machining

[0055] The tab 11 of the battery cell 10 refers to a metal conductor that protrudes outward from the positive and negative electrodes 112 of the battery cell 10. Current must flow through the tab 11 to connect to the outside of the battery cell 10, thereby realizing the charging and discharging function of the battery cell 10. In the embodiment of the present application, the tab 11 includes the positive electrode 111 and the negative electrode 112.

[0056] Please refer to Figure 4 In some embodiments, the main body 31 is a connecting sheet, and the connecting portion 32 is a connecting sleeve formed on the connecting sheet and matched with the tab 11.

[0057] In this way, the electrical connector 30 and the battery cell 10 form a snap connection with the tab 11 through the connecting sleeve, which is beneficial to reduce the installation difficulty of the battery cell 10.

[0058] Specifically, in some embodiments, the connecting sleeve includes a positive connecting sleeve and a negative connecting sleeve, wherein the positive connecting sleeve is used to connect with the positive electrode 111, and the negative connecting sleeve is used to connect with the negative electrode 112.

[0059] Further, in some embodiments, the two tabs 11 of the battery cell 10 are distinguished by setting different shapes, sizes or colors to prevent the positive and negative tabs 112 from being installed in reverse. For example, the positive tab 111 is brass-colored and the negative tab 112 is silver-white, or the positive tab 111 is cylindrical and the negative tab 112 is square or other shape protrusions. It should be noted that when distinguishing the positive and negative tabs 112 by shape, size, etc. The size of the connecting sleeve also needs to match the tab 11 to avoid the situation that the connecting sleeve can connect two tabs 11 at the same time.

[0060] In some embodiments, the electrical connector 30 further includes a spring 321 arranged on the inner side wall of the connecting sleeve, and the spring 321 is configured to be compressed and pressed against the side of the tab 11 when the tab 11 is inserted into the connecting sleeve.

[0061] In this way, the spring 321 can use its own elasticity to make the tab 11 more firmly fixed in the connecting sleeve, avoiding the tab 11 from being detached from the connecting sleeve due to vibration or impact of the battery cell 10, causing the battery cell 10 to be disconnected.

[0062] Specifically, the design of the spring 321 can ensure the close contact between the tab 11 and the connecting sleeve, thereby improving the stability of the electrical connection. The spring 321 is compressed and pressed against the side of the tab 11, which can provide additional mechanical fixing force to prevent the tab 11 from loosening under vibration or impact conditions. And the design of the spring 321 makes the tab 11 can be more easily inserted into the connecting sleeve without additional fixing steps.

[0063] In the embodiments of the present application, the spring 321 is directly fixed on the inner side wall of the connecting sleeve, and the specific connection method can be selected from welding, riveting or using a special buckle structure, among which welding can provide stronger connection strength, and the buckle structure is convenient for installation and disassembly.

[0064] Further, the spring 321 can be designed in a V shape, an arc shape or other elastic shape to ensure that sufficient compression force can be generated when the tab 11 is inserted and evenly distributed on the side of the tab 11.

[0065] Optionally, in order to provide sufficient elasticity and corrosion resistance, the spring 321 can be made of stainless steel, phosphor bronze or other high-performance alloy materials.

[0066] Further, a layer of lubricating coating, such as polytetrafluoroethylene (PTFE), can be coated on the contact surface of the spring 321 during use to reduce friction and wear and improve durability. Preferably, the structure of the spring 321 can be optimized by methods such as finite element analysis (FEA) to ensure that the best compression force and distribution are generated when the tab 11 is inserted.

[0067] It should be noted that during installation, care should be taken to ensure that the spring sheet 321 is not compressed too much, so as to avoid permanent deformation or failure, and the spring sheet 321 and the connecting sleeve should have good corrosion resistance to prevent poor electrical connection due to corrosion during long-term use.

[0068] In some embodiments, a threaded hole can also be provided on the tab 11, and the electrical connector 30 is installed on the tab 11 through a screw, so that the electrical connector 30 is connected to the battery cell 10.

[0069] In some embodiments, the number of spring sheets 321 is multiple, and the multiple spring sheets 321 are evenly arranged along the inner side wall of the connecting sleeve.

[0070] In this way, the multiple spring sheets 321 simultaneously press and fix the tab 11, which is conducive to improving the firmness of the tab 11, and at the same time, the stress on the tab 11 is more uniform, thereby improving the service life of the battery cell 10.

[0071] Specifically, the multiple spring sheets 321 are evenly arranged along the inner side wall of the connecting sleeve, which can ensure that the tab 11 receives uniform pressure when inserted into the connecting sleeve, thereby improving the stability of the electrical connection. During the insertion of the tab 11, the multiple spring sheets 321 can disperse stress and reduce the load on a single spring sheet 321, thereby prolonging the service life of the spring sheet 321 and the entire electrical connector 30.

[0072] In the embodiments of the present application, the number and distribution of spring sheets 321 can be further optimized according to the size of the tab 11 and the size of the connecting sleeve. Too many spring sheets 321 can increase the difficulty of insertion and manufacturing cost, while too few spring sheets 321 can not provide enough pressure and stability. Therefore, the optimal number and distribution of spring sheets 321 should be determined through experiments and simulations.

[0073] On the other hand, the performance of the electrical connection can be optimized by adjusting the pre-tightening force of the spring sheet 321. Too much pre-tightening force can cause difficulty in inserting the tab 11 or damage the spring sheet 321, while too little pre-tightening force can not provide enough pressure and stability. Therefore, the pre-tightening force of the spring sheet 321 should be adjusted according to the actual situation.

[0074] Please refer to Figure 1 and Figure 2 In some embodiments, the bracket 20 includes a first surface 212 and a second surface 217 opposite the first surface 212, the bracket 20 forms a first fixing groove 213 on the first surface 212, and a second fixing groove 214 is formed on the bottom surface of the first fixing groove 213, the first fixing groove 213 is configured to fix the battery cell 10, and the second fixing groove 214 is configured to fix the main body 31.

[0075] In this way, the fixing groove is used for fixing the battery cell 10 to prevent displacement of the battery cell 10 after installation. The mounting groove can limit the electrical connector 30 to avoid displacement of the electrical connector 30 during connection to cause accidental touch, so that the battery cell 10 is short-circuited.

[0076] Specifically, in the embodiment of the present application, the inner surface of the first support 21 close to the battery cell 10 is a first surface 212, and the outer surface away from the battery cell 10 is a second surface 217. The first surface 212 is provided with a first fixing groove 213. The number of the first fixing groove 213 is multiple, and the first fixing groove 213 is arranged one by one corresponding to the battery cell 10. One end of the battery cell 10 with an electrode is inserted and mounted in the first fixing groove 213.

[0077] Further, the second fixing groove 214 is arranged at the bottom of the first fixing groove 213. The second fixing groove 214 is matched with the shape of the main body 31 of the electrical connector 30. The electrical connector 30 is arranged in the second fixing groove 214, and the connecting part 32 partially protrudes from the second fixing groove 214.

[0078] Further, the second shell is provided with a third fixing groove 222 at a position corresponding to the first fixing groove 213. The number of the third fixing groove 222 is the same as that of the first fixing groove 213. The third fixing groove 222 is arranged one by one corresponding to the first fixing groove 213. The other end of the battery cell 10 is inserted and mounted in the second fixing groove 214.

[0079] In some embodiments, in order to avoid that the battery cell 10 is not stable after being installed in the first fixing groove 213 and the third fixing groove 222, glue can be selected to be filled in the first fixing groove 213 and the third fixing groove 222, so as to glue the battery cell 10 in the first fixing groove 213 and the third fixing groove 222. It should be noted that the glue with good heat dissipation effect and not easy to melt at high temperature should be selected to avoid thermal runaway of the battery cell 10 and melting of the glue due to heat to cause failure of the battery pack 100. In addition, when using the glue, the electrode should be prevented from contacting the glue to affect the reliability of the electrical connection of the point collection electrical connector 30. At the same time, the glue should be non-conductive glue to avoid short circuit of the battery cell 10 when the glue is used.

[0080] In some embodiments, the bottom surface of the second fixing groove 214 is formed with a first opening hole 215 corresponding to the connecting part 32. The first opening hole 215 penetrates the second surface 217, and the first opening hole 215 is configured to expose the main body 31.

[0081] In this way, the electrical connector 30 is exposed from the first opening hole 215, which is convenient for connecting the electrical connector 30 with external components and convenient for voltage collection.

[0082] Specifically, the first opening 215 is configured to expose the main body 31 directly, facilitating the electrical connection between the electrical connector 30 and external components via wiring or the like. In addition, the electrical connector 30 can be easily removed through the first opening 215, facilitating subsequent disassembly and maintenance.

[0083] The first opening 215 also helps dissipate heat from the battery pack 100. During operation of the battery pack 100, the battery cells 10 generate heat. The first opening 215 provides an additional heat dissipation channel, helping to reduce the operating temperature of the battery pack 100 and improve the performance and lifespan of the battery.

[0084] The first opening 215 should correspond to the connection portion 32 to ensure that external components can pass through the first opening 215 and be electrically connected to the main body 31 via wiring or the like. At the same time, the size of the opening should be moderate, ensuring sufficient space for the electrical connector 30 to connect to external components, while avoiding excessive size that could compromise structural strength.

[0085] In some embodiments, the first opening 215 can be accompanied by the addition of reinforcing ribs or the use of thicker materials to improve the structural strength of the bracket 20, ensuring that the battery pack 100 remains stable under conditions of vibration or impact.

[0086] In addition, if the battery pack 100 needs to operate in harsh environmental conditions, a sealing structure such as a sealing ring or sealant can be added to the first opening 215 to prevent the entry of moisture, dust, and other contaminants into the interior of the battery pack 100.

[0087] In some embodiments, the bottom surface of the first fixing groove 213 is formed with a second opening 216 corresponding to the tab 11, and the second opening 216 extends through the second surface 217. The second opening 216 is configured to expose the tab 11.

[0088] In this way, the tab 11 is exposed from the second opening 216, facilitating the connection between the battery cell 10 and external components.

[0089] Specifically, the design of the second opening 216 allows the tab 11 of the battery cell 10 to be exposed directly, facilitating the electrical connection between the tab 11 and external components via wiring or the like, thereby simplifying the assembly process of the battery pack 100. In addition, the second opening 216 not only provides convenience for the connection of the tab 11, but also serves as an additional heat dissipation channel, helping to reduce the operating temperature of the battery pack 100 and improve the performance and lifespan of the battery.

[0090] The position of the second opening 216 should correspond to the tab 11, ensuring that the tab 11 can be smoothly connected to external components through wiring or other means. At the same time, the size of the opening should be moderate, ensuring enough space for the tab 11 to connect to external components, while avoiding excessive size that would lead to a decrease in structural strength.

[0091] Referring to Figure 1 and Figure 4 In some embodiments, the main body 31 also has a connection hole 311, and the battery pack 100 further includes a fastener 40 that passes through the connection hole 311 and connects with the bracket 20, so that the main body 31 can be detachably mounted on the bracket 20.

[0092] In this way, the electrical connector 30 is detachably connected with the bracket 20 through the fastener 40, facilitating maintenance and replacement of the electrical connector 30 and the bracket 20.

[0093] Specifically, the main body 31 is connected with the bracket 20 through the fastener 40, so that the electrical connector 30 can be conveniently mounted and detached, facilitating maintenance and replacement. The detachable design increases the flexibility of assembly of the battery pack 100, allowing easy adjustment of the position of the electrical connector 30 or replacement of different types of electrical connectors 30 as needed. During use of the battery pack 100, if the electrical connector 30 fails or is damaged, it can be quickly detached and replaced, reducing downtime and improving maintenance efficiency. The design of the fastener 40 and the connection hole 311 can be standardized, facilitating mass production and reducing costs.

[0094] In the embodiments of the present application, the connection hole 311 should be designed at a suitable position of the main body 31, so that the fastener 40 can smoothly pass through and connect with the bracket 20. The number and size of the connection hole 311 should be determined according to the specifications of the fastener 40 and the design requirements of the battery pack 100. The fastener 40 can be a bolt, nut, screw, etc., and the specific choice should be based on the use environment, load requirements, and cost considerations of the battery pack 100. The material of the fastener 40 should have good corrosion resistance and mechanical strength. The bracket 20 should be designed with threaded holes or mounting grooves corresponding to the connection hole 311, so that the fastener 40 can be firmly connected with the bracket 20. The material of the bracket 20 should have sufficient rigidity and corrosion resistance.

[0095] Further, to prevent the fastener 40 from loosening during use, a locking device such as a spring washer, locking washer, etc. can be added to the connection hole 311 or the fastener 40

[0096] In other embodiments, the electrical connector 30 can also be connected with the bracket 20 in other ways, such as snap connection, adhesive connection, etc., to further simplify the mounting and dismounting process.

[0097] Referring to Figure 1In some embodiments, the battery cell 10 is a single tab 11 battery cell 10, and the electrical connector 30 is disposed on the side of the bracket 20 close to the tab 11.

[0098] In this way, the single tab 11 battery cell 10 facilitates the connection of the tab 11 on the one side and the connecting portion 32.

[0099] Specifically, the single tab 11 battery cell 10 refers to a battery cell 10 structure in which only one tab 11 is designed to extend from each electrode plate (positive electrode 111 or negative electrode 112) to conduct current. The design of the single tab 11 battery cell 10 reduces the number of tabs 11 compared to the multi-tab 11 battery cell 10, thereby simplifying the internal structure of the battery pack 100 and reducing the manufacturing complexity. Due to the reduction in the number of tabs 11, the space inside the battery pack 100 can be more efficiently utilized, which helps to improve the energy density of the battery pack 100. At the same time, it is also convenient for the connection of the battery cell 10 and the electrical connector 30.

[0100] In the description of the present specification, the description referring to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific feature, structure, material or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] In addition, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, unless otherwise specifically limited.

[0102] Although the embodiments of the present application have been shown and described above, it will be understood by those skilled in the art that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized by, The battery pack comprises: an electric core; a bracket; an electric connector comprising a main body and a connecting part electrically connected with the main body, the electric connector is configured to be arranged on the bracket, and the connecting part is buckled with a tab of the electric core to electrically connect the electric core.

2. The battery pack of claim 1, wherein, The main body is a connecting sheet, and the connecting part is a connecting sleeve formed on the connecting sheet and matched with the tab.

3. The battery pack of claim 2, wherein, The electric connector further comprises a spring sheet arranged on an inner side wall of the connecting sleeve, and the spring sheet is configured to be compressed and pressed against a side surface of the tab when the tab is inserted into the connecting sleeve.

4. The battery pack of claim 3, wherein, The number of the spring sheets is multiple, and the multiple spring sheets are uniformly arranged along the inner side wall of the connecting sleeve.

5. The battery pack of claim 1, wherein, The bracket comprises a first surface and a second surface opposite to the first surface, the bracket is formed with a first fixing groove on the first surface, and a second fixing groove is formed on a bottom surface of the first fixing groove, the first fixing groove is configured to fix the electric core, and the second fixing groove is configured to fix the main body.

6. The battery pack of claim 5, wherein, A first opening corresponding to the connecting part is formed on a bottom surface of the second fixing groove, the first opening penetrates through the second surface, and the first opening is configured to expose the main body.

7. The battery pack of claim 5, wherein, A second opening corresponding to the tab is formed on a bottom surface of the first fixing groove, the second opening penetrates through the second surface, and the second opening is configured to expose the tab.

8. The battery pack of claim 1, wherein, A connecting hole is further formed on the main body, and the battery pack further comprises a fastener, the fastener passes through the connecting hole and is connected with the bracket, so that the main body is detachably mounted on the bracket.

9. The battery pack of claim 1, wherein, The electric core is a single-tab electric core, and the electric connector is arranged on a side of the bracket close to the tab.

10. An energy storage power supply, characterized by, The battery pack comprises any one of claims 1-9.

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