Battery pack and electrical device

Abstract

The present application belongs to the technical field of battery packs, and provides a battery pack and an electrical device. The battery pack comprises a support housing, a plurality of battery cells, an insulating plate member and a plurality of conductive connectors, the plurality of battery cells being arranged in the support housing, one side of each battery cell being provided with terminal posts, and the terminal posts of the battery cells facing a same direction; the insulating plate member has clearance holes corresponding to the terminal posts, and the insulating plate member covers the terminal post side of the battery cells, the terminal posts passing through the insulating plate member via the clearance holes; the plurality of conductive connectors are located on the side of the insulating plate member facing away from the battery cells, the conductive connectors respectively connecting the terminal posts of every two adjacent battery cells, such that the battery cells are connected in series. In the battery pack provided by the present application, the insulating plate member is used to pre-position the plurality of battery cells, and the support housing and the insulating plate member are used to jointly secure the battery cells, thus allowing the assembly of the battery pack to be simpler and more convenient, and helping to improve the efficiency of subsequent maintenance.

Description

Battery packs and electrical equipment 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] Batteries, as the core component of energy storage, play a vital role in many fields. Currently used batteries typically consist of multiple individual cells connected in series, achieving their overall function through electrical connections.

[0003] However, in order to ensure a stable connection between each cell, the cells of traditionally designed batteries are mostly welded and fixed in the casing, which leads to complex assembly and low disassembly efficiency. Summary of the Invention

[0004] This application provides a battery pack and electrical equipment to solve the technical problem of low battery disassembly and assembly efficiency in related technologies.

[0005] On one hand, this application provides a battery pack, including:

[0006] Support shell;

[0007] Multiple battery cells are disposed in the supporting housing, and each battery cell has a terminal on one side, with each terminal facing the same direction;

[0008] An insulating plate having clearance holes corresponding to the terminal blocks, the insulating plate covering the terminal block side of each of the battery cells, and the terminal blocks passing through the clearance holes through the insulating plate.

[0009] Multiple conductive connectors are located on the side of the insulating plate away from the battery cell. The conductive connectors are respectively connected to the terminal posts of two adjacent battery cells so that the battery cells are connected in series.

[0010] In one possible implementation, the support housing includes:

[0011] The base plate has a fixing part that is bent towards each other on opposite sides;

[0012] The inner side plate has a snap-fit ​​part that bends outward at the bottom end. The snap-fit ​​part cooperates with the fixing part to form a limiting constraint on the inner side plate and the bottom plate.

[0013] The rear inner plate is connected to the bottom plate and the side inner plate, respectively.

[0014] A front end plate is disposed opposite to the rear end inner plate, and the front end plate is connected to the bottom plate and the side end inner plate respectively;

[0015] The base plate, the side inner plate, the front plate, and the rear inner plate together form a cavity for accommodating multiple battery cells.

[0016] In one possible implementation, the support housing further includes:

[0017] The rear outer panel is located on the outside of the rear inner panel;

[0018] The outer side plate is located outside the inner side plate, and the middle part of the outer side plate is bent inward toward the inner side plate.

[0019] In one possible implementation, it further includes a positive connection terminal and a negative connection terminal, wherein the positive connection terminal is connected to the positive input terminal of each of the battery cells, and the negative connection terminal is connected to the negative output terminal of each of the battery cells. Two insulating connection posts are fixed on the front end plate. When the battery cell is located in the receiving cavity, the positive connection terminal and the negative connection terminal are respectively pressed onto one of the insulating connection posts.

[0020] In one possible implementation, the battery pack further includes:

[0021] The management panel is communicatively connected to each of the battery cells to collect the battery parameters of each of the battery cells;

[0022] A heat dissipation plate is connected to the management panel. The side of the heat dissipation plate opposite to the management panel has heat dissipation fins. The heat dissipation plate and the management panel are connected together to the outside of the front panel.

[0023] In one possible implementation, the management panel is connected to the positive terminal and the negative terminal via a connecting bar, which is pressed against the insulating connecting post.

[0024] In one possible implementation, the management panel has multiple heat-generating areas, and a plurality of heat-conducting elements are sandwiched between the heat dissipation plate and the management panel on the side facing the management panel, the heat-conducting elements being arranged corresponding to the heat-generating areas.

[0025] In one possible implementation, it also includes:

[0026] At least one fixed bracket is erected on the supporting housing, and the fixed bracket and the supporting housing together constrain multiple battery cells;

[0027] The side of the fixed bracket opposite to the battery cell has a wire hole and a wire binding hole.

[0028] In one possible implementation, an insulating protective element is sandwiched between two adjacent battery cells, and the insulating protective element is attached to the inner sidewall of the support housing.

[0029] On the other hand, this application provides an electrical device, including a device body and a battery pack as described in any of the above claims, wherein the battery pack is used to supply power to the device body. Beneficial effects

[0030] The battery pack and electrical equipment provided in this application have all the battery cells with the same orientation of their terminals, which makes the cell arrangement more compact and allows for the integration of more cells within a limited space. In addition, the insulating plate can isolate the cells from the conductive connectors, reducing the risk of short circuits. Since the terminals pass through the clearance holes of the insulating plate, it is easier to access the terminals during maintenance or cell replacement, which is convenient. Multiple cells are constrained and positioned by the insulating plate and fixed by the supporting shell. This dual constraint effect ensures the stability of the cells and eliminates the complex cell connection structure in related technologies, which is beneficial to improving the efficiency of overall assembly and subsequent maintenance. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] Figure 1 is a schematic diagram of the overall structure of the battery pack in the embodiment of this application.

[0033] Figure 2 is a schematic diagram of the internal structure of the battery pack in an embodiment of this application;

[0034] Figure 3 is a schematic diagram of the arrangement of multiple battery cells in an embodiment of this application;

[0035] Figure 4 is a partial structural schematic diagram of the supporting shell in an embodiment of this application;

[0036] Figure 5 is a schematic diagram of the assembly of the outer side plate and the inner side plate in Figure 4;

[0037] Figure 6 is an enlarged view of part of the structure in Figure 4;

[0038] Figure 7 is a schematic diagram of the connection between the conductive connector and the battery cell in an embodiment of this application;

[0039] Figure 8 is a three-dimensional view of Figure 7;

[0040] Figure 9 is a schematic diagram of multiple battery cells assembled to the support housing in an embodiment of this application;

[0041] Figure 10 is a schematic diagram of the assembly position of the management panel and the heat sink in an embodiment of this application;

[0042] Figure 11 is a schematic diagram of the management panel from another perspective in Figure 9.

[0043] Explanation of reference numerals in the attached drawings: 100-Supporting housing; 101-Base plate; 1011-Fixing part; 102-Side inner plate; 1021-First bend; 1022-Second bend; 103-Rear inner plate; 104-Front end plate; 1041-Insulating connecting post; 105-Rear outer plate; 106-Side outer plate; 200-Battery cell; 201-Terminal post; 202-Reinforcing boss; 300-Insulating plate; 301-Allowing hole; 400-Conductive connector; 401-Positive connection terminal; 402-Negative connection terminal; 501-Management panel; 502-Heat dissipation plate; 503-Connecting bar; 504-Heat dissipation fins; 505-Heat conductive component; 506-Heat generation area; 600-Fixing bracket; 700-Insulating protective component; 800-Cover plate.

[0044] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0046] As mentioned in the background section, traditional battery pack designs typically involve complex cell connection methods, encompassing various technologies and processes such as spot welding, laser welding, bolt connections, and conductive adhesive connections. While these methods can achieve effective cell connection, the assembly process between the cells and the supporting housing, as well as between the cells themselves, is actually quite cumbersome and complex, affecting subsequent maintenance and repair, and hindering the rapid and efficient assembly of battery packs.

[0047] Based on the above description, one or more embodiments of this application provide a battery pack and electrical device. In the battery pack, the terminals of multiple battery cells face the same direction, which makes the battery cell arrangement more compact and facilitates the integration of more battery cells in an effective space. In addition, the insulating plate can isolate the battery cells and conductive connectors, reducing the risk of short circuits. Since the terminals pass through the clearance holes of the insulating plate, it is easier to access the terminals when maintaining or replacing the battery cells, which is convenient for operation. Multiple battery cells are constrained and positioned by the insulating plate on the one hand, and constrained and fixed by the supporting shell on the other hand. The dual constraint effect ensures the stability of the battery cells, eliminating the complex structure of battery cell connection in related technologies, which is conducive to improving the efficiency of overall assembly and subsequent inspection and maintenance.

[0048] The battery pack and electrical device according to embodiments of this application will be described below with reference to the accompanying drawings.

[0049] As shown in Figures 1 to 3, this application provides a battery pack including a supporting shell 100, multiple battery cells 200, an insulating plate 300, and multiple conductive connectors 400.

[0050] Multiple battery cells 200 are placed in a support housing 100. Each battery cell 200 has a terminal 201 on one side, and the terminal 201s of the multiple battery cells 200 face the same direction. An insulating plate 300 is placed on the multiple battery cells 200. The insulating plate 300 has a clearance hole 301 corresponding to the terminal 201. The insulating plate 300 covers the side of the terminal 201 of the battery cells 200, and the terminal 201 passes through the clearance hole 301 and exits the insulating plate 300. Multiple conductive connectors 400 are located on the side of the insulating plate 300 away from the battery cells 200. The conductive connectors 400 are respectively connected to the terminal 201s of two adjacent battery cells 200 so that the battery cells 200 are connected in series.

[0051] As can be seen from the above description, in the battery pack of this application embodiment, the terminal 201 of multiple cells 200 faces the same direction, which makes the arrangement of cells 200 more compact and reasonable. This is beneficial for accommodating more cells 200 in a limited space and facilitates the connection between the conductive connector 400 and the terminal 201. When the insulating plate 300 covers the cells 200, since the terminal 201 passes through the clearance hole 301, the clearance hole 301 of the insulating plate 300 constrains and pre-positions multiple cells 200. Multiple cells 200 are placed in the support housing 100, and the support housing 100 can fix the cells 200, effectively ensuring the stable installation of the cells 200 and improving the safety and stability of the battery pack. Thus, the complex cell 200 fixing structure in related technologies is eliminated, which facilitates the assembly of the battery pack, speeds up the assembly period, and also facilitates the subsequent disassembly and maintenance of the battery pack.

[0052] In the embodiments of the present application, the battery cell 200 may adopt the structure of a mature battery cell 200 in the related art, such as a lithium iron phosphate battery cell 200 or a lithium-ion battery cell 200. Generally, the battery cell 200 has two pole terminal 201, one positive and one negative. A plurality of battery cells 200 are connected in series to form the entire battery pack. Here, the specific parameters and internal structure of the battery cell 200 are not absolutely limited.

[0053] As shown in FIG. 4, the support housing 100 in the embodiments of the present application includes a bottom plate 101, side end inner plates 102, a rear end inner plate 103 and a front end plate 104. Fixing portions 1011 are formed by bending the opposite sides of the bottom plate 101 towards each other. The bottom end of the side end inner plate 102 is bent outward to form a clamping portion, and the clamping portion and the fixing portion 1011 cooperate to form a limit constraint between the side end inner plate 102 and the bottom plate 101; the rear end inner plate 103 is respectively connected to the bottom plate 101 and the side end inner plate 102; the front end plate 104 is disposed opposite to the rear end inner plate 103, and the front end plate 104 is respectively connected to the bottom plate 101 and the side end inner plate 102; the bottom plate 101, the side end inner plates 102, the front end plate 104 and the rear end inner plate 103 together enclose a receiving cavity for receiving a plurality of battery cells 200.

[0054] In the above description, orientation words such as "bottom end", "front end", and "rear end" are described with reference to the placement direction of the battery pack. Taking the direction shown in FIG. 2 as an example, the pole terminals 201 of the battery cell 200 in FIG. 2 are located on the upper side, the two sides of the bottom plate 101 are respectively two side end inner plates 102, the front end plate 104 is disposed on the front side of the bottom plate 101, and the rear end inner plate 103 is disposed on the rear side of the bottom plate 101.

[0055] Exemplarily, as shown in FIGS. 5 and 6, fixing portions 1011 are formed on the side ends of the bottom plate 101 corresponding to the side end inner plates 102. The fixing portions 1011 are specifically formed by bending vertically upward relative to the main body portion of the bottom plate 101 and then bending horizontally towards the central region of the bottom plate 101. Thus, the fixing portions 1011 of the bottom plate 101 are formed into a "C" shape. The outer edge of the side end inner plate 102 is bent to form a clamping portion. The clamping portion is specifically formed by bending horizontally outward relative to the main body portion of the side end inner plate 102 to form a first bend 1021 and then bending vertically upward to form a second bend 1022. Thus, the clamping portion of the side end inner plate 102 is formed into a "U" shape.

[0056] The snap-fit ​​portion of the inner side plate 102 is pushed into the fixing portion 1011 along the plane of the base plate 101, forming a snap-fit ​​connection with the fixing portion 1011. As can be seen from Figure 6, the second bend 1022 of the inner side plate 102 abuts against the fixing portion 1011. This design allows the second bend 1022 to provide a supporting force in the height direction with the fixing portion 1011, thereby preventing the inner side plate 102 from detaching from the base plate 101. Of course, the snap-fit ​​constraint between the fixing portion 1011 and the snap-fit ​​portion serves as a pre-positioning and enhanced support function. Correspondingly, the fixing portion 1011 and the snap-fit ​​portion should also be fastened together, for example, by connecting them with bolts that pass through both.

[0057] As an alternative implementation, the rear inner plate 103 and the bottom plate 101 can also be connected with reference to the above-described snap-fit ​​structure. That is, the bottom plate 101 is also provided with a fixing part 1011 corresponding to the side edge of the rear inner plate 103, and the rear inner plate 103 is provided with a snap-fit ​​part. The locking and snap-fit ​​of the fixing part 1011 and the snap-fit ​​part constitute the limiting constraint between the rear inner plate 103 and the bottom plate 101.

[0058] Since both the base plate 101 and the inner side plate 102 are bent, when they are engaged, the connection area forms a rectangular frame-like engagement structure. This increases the overall connection strength of the supporting housing 100 and provides a stable support foundation for the battery cell 200, enhancing the connection stability between the base plate 101 and the inner side plate 102. This prevents the battery pack from being deformed by external forces and compressing the internal battery cell 200, thus improving the overall safety performance of the battery pack.

[0059] Furthermore, as shown in Figure 5, the support housing 100 also includes a rear end outer plate 105 and a side end outer plate 106.

[0060] The rear outer plate 105 is located on the outside of the rear inner plate 103, and the side outer plate 106 is located on the outside of the side inner plate 102. The middle part of the side outer plate 106 is bent inward toward the side inner plate 102.

[0061] The aforementioned side outer plate 106 is bent outwards from the middle region at both the upper and lower ends. The middle region of the side outer plate 106 is attached to the side inner plate 102. After the upper end of the side outer plate 106 is bent, it horizontally overlaps with the upper end of the side inner plate 102. After the lower end of the side outer plate 106 is bent, it vertically overlaps with the side end of the bottom plate 101. Thus, the side outer plate 106, the side inner plate 102, and the bottom plate 101 all form a stable connection. The bending design of the side outer plate 106 enhances the strength of the side wall structure of the supporting shell 100. At the same time, it also facilitates disassembly, replacement, and maintenance.

[0062] As an alternative implementation, the rear outer plate 105 may also be designed with a bent portion, with the middle part of the rear outer plate 105 bent inward toward the rear inner plate 103.

[0063] The rear outer plate 105 and the rear inner plate 103, as well as the side outer plate 106 and the side inner plate 102, are all fixedly connected by common bolts. The rear outer plate 105 and the side outer plate 106 provide an additional protective layer to effectively resist external impacts and vibrations and protect the internal battery cell 200 from damage.

[0064] In some embodiments, the side panel 106 is also provided with a handle and mounting lugs to facilitate transport or installation of a battery pack in an electrical appliance.

[0065] As shown in Figure 3, in some embodiments, the insulating board 300 may be made of epoxy resin board, polyimide board, polycarbonate board, etc. The insulating board 300 needs to have good mechanical strength and electrical insulation performance, and can effectively constrain the pole terminal 201, thereby ensuring the stable installation of multiple cells 200.

[0066] Furthermore, the upper end face of the battery cell 200 is also constructed with a protruding reinforcing boss 202, and the insulating plate 300 is also provided with a clearance hole 301 at the position corresponding to the reinforcing boss 202. When the insulating plate 300 covers the battery cell 200, the clearance hole 301 respectively corresponds to the pole terminal 201 and the reinforcing boss 202 to engage and snap together, thereby further improving the constraint effect of the insulating plate 300 on the battery cell 200.

[0067] The aforementioned battery cell 200 has a positive terminal 201 and a negative terminal 201. When multiple battery cells 200 are arranged in an array, the positive and negative terminals of two adjacent battery cells 200 are arranged alternately along the array direction. This design facilitates the series connection of two adjacent battery cells 200 by the conductive connector 400, shortens the connection path, and reduces the failure risk of the conductive connector 400.

[0068] The conductive connector 400 can be made of copper sheet or other metal conductive plate. The conductive connector 400 and the terminal 201 can be fixed with bolts or by laser welding, ultrasonic welding or other methods to form a complete battery module.

[0069] As shown in Figures 7 and 8, the thick black lines in Figure 7 correspond to the connection paths of each conductive connector 400. When multiple cells 200 are connected in series, the negative terminal of cell 200 is connected to the positive terminal of the adjacent cell 200. Multiple conductive connectors 400 share a common positive terminal 401 and a negative terminal 402. Each cell 200 ultimately leads out a positive terminal 401 and a negative terminal 402. The positive terminal 401 connects to the positive input terminal of the series-connected cell 200, and the negative terminal 402 connects to the negative output terminal of the series-connected cell 200. The series connection of multiple cells 200 can boost the voltage of the battery pack for use in high-voltage electrical equipment. Connecting multiple cells 200 in series can also provide higher energy output and increase energy density.

[0070] Furthermore, multiple cells 200 connected in series can also achieve a modular battery pack design. The number of cells 200 can be increased or decreased according to actual needs, and the overall voltage specifications and capacity of the battery pack can be adjusted. Since the conductive connector 400 is located on the upper side of the insulating plate 300, when the cells 200 are replaced and adjusted, there is no need to disassemble the insulating plate 300 and all the cells 200. They can be adjusted directly on the terminal 201 on the upper side of the insulating plate 300, which simplifies the production and maintenance process.

[0071] It should be noted that, in some embodiments, to ensure the stable fixation of the battery cell 200 within the support housing 100, when the actual required voltage capacity of multiple battery cells 200 decreases, a "dummy battery cell" with an empty shell can be inserted into the multiple battery cells 200 for support, ensuring that the multiple battery cells 200 fully occupy the internal space of the support housing 100. This dummy battery cell can be constructed using metal plates to form the dimensions of a single battery cell 200, but it does not have actual usable capacity and only serves to fill the internal space of the support housing 100.

[0072] For example, each cell 200 has a voltage of 1.2V, and the battery pack requires a voltage of 18V. Therefore, a total of 15 cells 200 + 1 dummy cell are arranged inside the support housing 100, with 8 cells 200 arranged in each layer of the array.

[0073] In this embodiment of the application, as shown in FIG9, two insulating connecting posts 1041 are fixed on the front end plate 104. When the battery cell 200 is located in the receiving cavity, the positive terminal 401 and the negative terminal 402 are respectively pressed onto an insulating connecting post 1041.

[0074] Here, the insulating connecting post 1041 and the front end plate 104 are integrally formed. The positive terminal 401 and the negative terminal 402 are fixed to the insulating connecting post 1041 by through bolts. This design can provide stable support for the positive terminal 401 and the negative terminal 402, and also ensure that the positive terminal 401 and the negative terminal 402 are in a good insulating state, avoiding short circuit problems caused by the positive terminal 401 and the negative terminal 402 coming into contact with other components inside the support housing 100.

[0075] As shown in Figures 10 and 11, in some embodiments, the battery pack also includes a management panel 501 and a heat dissipation plate 502.

[0076] The management panel 501 is communicatively connected to each battery cell 200 to collect battery parameters of each battery cell 200. The heat dissipation plate 502 is connected to the management panel 501. The side of the heat dissipation plate 502 opposite to the management panel 501 has heat dissipation fins 504. The heat dissipation plate 502 and the management panel 501 are connected together to the outside of the front panel 104.

[0077] The aforementioned management panel 501 can be a battery management system (BMS) board. The management panel 501 is connected to each cell 200 via a wiring harness and is responsible for monitoring and managing the charging and discharging process of the battery.

[0078] For example, the management panel 501 includes components such as acquisition and monitoring protection circuits, electrical and communication interfaces, and thermal management. Since current passes through resistive elements, microcontrollers that process large amounts of data, and protection circuits, the management panel 501 is more prone to heat-concentrated areas 506. By designing a heat dissipation plate 502, the management panel 501 can be cooled to ensure its normal operation.

[0079] As shown in Figures 1, 2, and 10, the management panel 501 and the heat dissipation plate 502 are fastened together and connected by bolts that pass through them. The heat dissipation fins 504 on the heat dissipation plate 502 are densely distributed, which can increase the heat dissipation area and improve the heat dissipation efficiency. For example, after the management panel 501 and the heat dissipation plate 502 are connected, the connected whole is then fixedly connected to the front end plate 104. This design can realize the modular design of the management panel 501 and the support housing 100, which is convenient for disassembly, assembly, and maintenance.

[0080] Furthermore, the management panel 501 is connected to the positive terminal 401 and to the negative terminal 402 via a connecting strip 503, which is pressed onto the insulating connecting post 1041.

[0081] The connecting busbar 503 can be made of copper, which has high mechanical strength. Compared with the flexible cable connection used in related technologies, it can avoid deformation due to heat from the management panel 501 or external impact, ensuring normal data transmission. As shown in Figure 9, the connecting copper busbar is crimped to both the positive terminal 401 and the negative terminal 402. Therefore, the insulating connecting post 1041 can also provide support for the management panel 501 and the heat sink 502, which helps to further improve the overall structural strength of the battery pack.

[0082] In some embodiments, the management panel 501 has a plurality of heat-generating areas 506, and a plurality of heat-conducting elements 505 are sandwiched between the side of the heat dissipation plate 502 facing the management panel 501 and the management panel 501, and the heat-conducting elements 505 are arranged corresponding to the heat-generating areas 506.

[0083] It should be noted that when the management panel 501 adopts the BMS board in related technologies, it should include the corresponding required components such as a reset switch, display screen, and functional interfaces. For different specifications of management panels 501, the actual location of the heat-generating area 506 is different, and the position of the heat-conducting component 505 should also be adjusted accordingly. For example, the heat-conducting component 505 can be made of thermally conductive silicone, thermally conductive grease, or other heat-transferring components, and this application embodiment does not make an absolute limitation on this.

[0084] In this embodiment, the management panel 501 is connected to each battery cell 200 via a wiring harness. Generally, a temperature control wire and a sampling wire are connected between the management panel 501 and the battery cell 200.

[0085] The sampling line is used to monitor the voltage of each cell 200 in real time. When multiple cells 200 are connected in series through the conductive connector 400, a sampling point is set between the positive terminal of each cell 200 and the negative terminal of the next cell 200. That is, a sampling point is set at the midpoint of the conductive connector 400, thereby monitoring the voltage of adjacent cells 200 through a sampling line.

[0086] The temperature control line is used to monitor the temperature of the battery cell 200 in real time to ensure that the temperature is within a safe range. A temperature sensor (such as a thermistor or thermocouple) is installed near each battery cell 200 or a group of battery cells 200, and the temperature sensor data is transmitted to the management panel 501 via the temperature control line.

[0087] In some embodiments, the battery pack further includes at least one fixing bracket 600, which is mounted on the support housing 100. The fixing bracket 600 and the support housing 100 together constrain multiple battery cells 200. The side of the fixing bracket 600 away from the battery cells 200 is provided with wire holes and wire binding holes.

[0088] The aforementioned fixing bracket 600 spans multiple battery cells 200. For example, as shown in Figure 9, when there are two rows of battery cells 200 arranged in an array, two fixing brackets 600 are correspondingly provided. Each fixing bracket 600 spans one row of battery cells 200 to achieve the effect of constraining and fixing the battery cells 200. Each fixing bracket 600 has multiple wire-passing holes and wire-tying holes along its own length direction. The wire-passing holes are used to pass through the sampling wire and temperature control wire between the management panel 501 and the battery cells 200, and the wire-tying holes are used to provide a fixing base for bundling the wire harness.

[0089] It should be noted that in this embodiment, an insulating protective element 700 is sandwiched between two adjacent battery cells 200, and an insulating protective element 700 is attached to the inner side wall of the support housing 100. Here, the inner side of the support housing 100 is the corresponding position of the inner side of the side end inner plate 102, the inner side of the front end plate 104, the upper side of the bottom plate 101, and the inner side of the rear end inner plate 103.

[0090] The insulating protective component 700 can be made of insulating protective paper or a board made of insulating material, such as epoxy resin board, polyimide board, or polycarbonate board. This feature can prevent the battery cell 200 from being short-circuited by external interference, ensuring the normal operation of the battery pack.

[0091] Of course, in the battery pack of this embodiment, a cover plate 800 should also be provided above the supporting housing 100, and the cover plate 800 covers the supporting housing 100 to form a complete battery pack. The cover plate 800 and the supporting housing 100 can be connected by bolts that pass through both.

[0092] As can be seen from the above description, in the battery pack of this application embodiment, except for the welding connection between the conductive connector 400 and the terminal 201, the various plates of the supporting housing 100 and the cells 200, as well as the management panel 501 and the heat dissipation plate 502, are all assembled to form an overall battery pack. Compared with the welding and fixing method in related technologies, this can effectively reduce the assembly difficulty, improve the efficiency of assembly line operation, and facilitate subsequent inspection, maintenance and disassembly operations.

[0093] Another embodiment of this application provides an electrical device, including a device body and a battery pack as described in any of the above embodiments, wherein the battery pack is used to supply power to the device body.

[0094] Since the electrical equipment includes the battery pack in any of the above embodiments, it has all the advantages of a battery pack.

[0095] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0096] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack, characterized in that, include: Support housing (100); Multiple battery cells (200) are disposed within the support housing (100), and each battery cell (200) has a terminal (201) on one side, with each terminal (201) facing the same direction; An insulating plate (300) has a clearance hole (301) corresponding to the terminal (201), the insulating plate (300) covers the terminal (201) side of each of the cells (200), and the terminal (201) passes through the clearance hole (301) and exits the insulating plate (300); Multiple conductive connectors (400) are located on the side of the insulating plate (300) away from the battery cell (200). The conductive connectors (400) are respectively connected to the pole terminals (201) of two adjacent batteries (200) so that the batteries (200) are connected in series.

2. The battery pack according to claim 1, characterized in that, The supporting housing (100) includes: The base plate (101) has a fixing part (1011) which is bent towards each other on opposite sides; The inner side plate (102) has a snap-fit ​​part that bends outward at the bottom end. The snap-fit ​​part and the fixing part (1011) cooperate to form a limiting constraint between the inner side plate (102) and the bottom plate (101). The rear end inner plate (103) is connected to the bottom plate (101) and the side end inner plate (102) respectively; A front end plate (104) is disposed opposite to the rear end inner plate (103), and the front end plate (104) is connected to the bottom plate (101) and the side end inner plate (102) respectively; The base plate (101), the side inner plate (102), the front plate (104), and the rear inner plate (103) together form a cavity for accommodating multiple battery cells (200).

3. The battery pack according to claim 2, characterized in that, The support housing (100) further includes: The rear outer panel (105) is located on the outside of the rear inner panel (103); The outer side plate (106) is located on the outside of the inner side plate (102), and the middle part of the outer side plate (106) is bent inward toward the inner side plate (102).

4. The battery pack according to claim 2, characterized in that, It also includes a positive terminal (401) and a negative terminal (402). The positive terminal (401) is connected to the positive input terminal of the battery cell (200) after being connected in series, and the negative terminal (402) is connected to the negative output terminal of the battery cell (200) after being connected in series. The front end plate (104) is provided with two insulating connecting posts (1041). The positive terminal (401) and the negative terminal (402) are respectively pressed onto one of the insulating connecting posts (1041).

5. The battery pack according to claim 4, characterized in that, Also includes: The management panel (501) is communicatively connected to each of the battery cells (200) to collect the battery parameters of each of the battery cells (200); A heat dissipation plate (502) is connected to the management panel (501). The heat dissipation plate (502) has heat dissipation fins (504) on the side away from the management panel (501). The heat dissipation plate (502) and the management panel (501) are connected together to the outside of the front end plate (104).

6. The battery pack according to claim 5, characterized in that, The management panel (501) is connected to the positive terminal (401) and to the negative terminal (402) via a connecting bar (503), which is pressed onto the insulating connecting post (1041).

7. The battery pack according to claim 5, characterized in that, The management panel (501) has multiple heat-generating areas (506), and the heat dissipation plate (502) facing the management panel (501) has multiple heat-conducting components (505) sandwiched between the management panel (501) and the heat dissipation plate (502), and the heat-conducting components (505) are arranged corresponding to the heat-generating areas (506).

8. The battery pack according to any one of claims 1 to 7, characterized in that, Also includes: At least one fixed bracket (600) is mounted on the support housing (100), and the fixed bracket (600) and the support housing (100) together constrain a plurality of the battery cells (200); The fixed bracket (600) has a wire hole and a wire tie hole on the side opposite to the battery cell (200).

9. The battery pack according to any one of claims 1 to 7, characterized in that, An insulating protective element (700) is sandwiched between two adjacent battery cells (200), and an insulating protective element (700) is attached to the inner side wall of the support housing (100).

10. An electrical appliance, characterized in that, It includes a device body and a battery pack as described in any one of claims 1 to 9, the battery pack being used to supply power to the device body.

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