Battery pack and electric equipment

Abstract

The invention provides a battery pack and electric equipment, and belongs to the technical field of battery packs. The battery pack comprises a supporting shell, a plurality of battery cells, an insulating plate and a plurality of conductive connecting pieces, the plurality of battery cells are arranged in the supporting shell, one side of each battery cell is provided with a pole terminal, and the pole terminals of the battery cells face the same direction; the insulating plate is provided with an avoiding hole corresponding to the pole terminal, the insulating plate covers the pole terminal side of the battery cell, and the pole terminal penetrates out of the insulating plate through the avoiding hole; and the plurality of conductive connecting pieces are positioned on one side, deviating from the battery cells, of the insulating plate, and are respectively connected with the pole terminals of the two adjacent battery cells, so that the battery cells are connected in series. According to the battery pack provided by the invention, the plurality of battery cells are pre-positioned by utilizing the insulating plate, and the battery cells are jointly fastened by utilizing the supporting shell and the insulating plate, so that the assembly of the battery pack is simpler and more convenient, and the later maintenance efficiency is also favorably improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] As the core component of energy storage, batteries play a vital role in many fields. Currently used batteries are usually composed of multiple single cells connected in series, and the overall function is achieved through electrical connections.

[0003] However, in order to ensure a stable connection between each battery cell, the battery cells of traditionally designed batteries are mostly welded and fixed in the shell, resulting in complex assembly and splicing and low disassembly efficiency. Summary of the invention

[0004] The present application provides a battery pack and an electrical device to solve the technical problem of low battery disassembly and assembly efficiency in the related art.

[0005] In one aspect, the present application provides a battery pack, comprising:

[0006] Supporting shell;

[0007] A plurality of battery cells are arranged in the supporting shell, one side of each battery cell has a pole terminal, and each pole terminal faces the same direction;

[0008] An insulating plate, wherein the insulating plate has an avoidance hole corresponding to the pole terminal, the insulating plate covers the pole terminal side of each of the battery cells, and the pole terminal passes through the insulating plate through the avoidance hole;

[0009] A plurality of conductive connectors are located on a side of the insulating plate away from the battery cells, and the conductive connectors are respectively connected to the pole terminals of two adjacent battery cells so that the battery cells are connected in series.

[0010] In a possible implementation, the supporting shell includes:

[0011] A bottom plate, wherein two opposite sides of the bottom plate are bent toward each other to form a fixing portion;

[0012] The side inner plate has a bottom end bent outwardly to form a clamping portion, and the clamping portion cooperates with the fixing portion to form a limit constraint for the side inner plate and the bottom plate;

[0013] A rear end inner plate, connected to the bottom plate and the side end inner plate respectively;

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

[0015] The bottom plate, the side inner plate, the front end plate and the rear end inner plate together form a receiving cavity for receiving a plurality of the battery cells.

[0016] In a possible implementation, the supporting shell further includes:

[0017] A rear end outer plate, arranged on the outer side of the rear end inner plate;

[0018] The side end outer plate is arranged on the outer side of the side end inner plate, and the middle part of the side end outer plate is bent inwardly toward the side end inner plate.

[0019] In a possible embodiment, it also includes a positive connection terminal and a negative connection terminal, 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 fixedly provided on the front end plate, and when the battery cell is located in the accommodating cavity, the positive connection terminal and the negative connection terminal are respectively crimped onto one of the insulating connection posts.

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

[0021] A management panel is connected to the battery cells to collect battery parameters of the battery cells;

[0022] A heat dissipation shield is connected to the management panel. A heat dissipation fin is constructed on a side of the heat dissipation shield facing away from the management panel. The heat dissipation shield and the management panel are connected together to the outer side of the front end panel.

[0023] In a possible implementation manner, the management panel and the positive electrode connection terminal are connected, as well as the management panel and the negative electrode connection terminal are connected via a connection bar, and the connection bar is crimped onto the insulating connection column.

[0024] In a possible implementation, the management panel has a plurality of heating areas, a plurality of heat conducting members are sandwiched between a side of the heat dissipation shield facing the management panel and the management panel, and the heat conducting members are arranged corresponding to the heating areas.

[0025] In a possible implementation, it further includes:

[0026] At least one fixing bracket is mounted on the supporting shell, and the fixing bracket and the supporting shell jointly constrain the plurality of battery cells;

[0027] A wire passing hole and a wire binding hole are configured on a side of the fixing bracket away from the battery core.

[0028] In a possible implementation manner, an insulating protective member is sandwiched between two adjacent battery cells, and an insulating protective member is attached to the inner side wall of the support shell.

[0029] On the other hand, the present application provides an electrical device, comprising a device body and a battery pack as described in any one of the above items, wherein the battery pack is used to supply power to the device body.

[0030] The battery pack and electrical equipment provided by the present application have the same orientation of the pole terminals of each battery cell in the battery pack, so that the battery cell arrangement is more compact, which is conducive to integrating more battery cells in an effective space; in addition, the insulating plate can isolate the battery cell and the conductive connector, reducing the risk of short circuit, and because the pole terminal passes through the insulating plate through the avoidance hole, it is easier to contact the pole terminal when maintaining or replacing the battery cell, which facilitates 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 double constraint effect ensures the stable fixation of the battery cell, eliminates the complex structure of the battery cell connection in the related art, and is conducive to improving the overall assembly and subsequent inspection and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 1 The overall structure diagram of the battery pack in the embodiment of the present application is as follows

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

[0034] Figure 3 A schematic diagram of the arrangement positions of multiple battery cells in an embodiment of the present application;

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

[0036] Figure 5 for Figure 4 Schematic diagram of the assembly of the middle side end outer plate and the side end inner plate;

[0037] Figure 6 for Figure 4 A partial enlarged view of the structure;

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

[0039] Figure 8 for Figure 7 Stereoscopic image of

[0040] Fig. 9It is a schematic diagram of assembling a plurality of battery cells to a supporting shell in an embodiment of the present application;

[0041] Fig.10 This is a schematic diagram of the assembly positions of the management panel and the heat dissipation shield in the embodiment of the present application;

[0042] Fig.11 for Fig. 9 Another perspective diagram of the management panel.

[0043] Description of Reference Numerals

[0044] 100-support shell; 101-bottom plate; 1011-fixing part; 102-side end inner plate; 1021-first bend; 1022-second bend; 103-rear end inner plate; 104-front end plate; 1041-insulating connecting column; 105-rear end outer plate; 106-side end outer plate;

[0045] 200-battery cell; 201-pole terminal; 202-reinforced boss;

[0046] 300-insulating plate; 301-avoidance hole;

[0047] 400-conductive connecting piece; 401-positive electrode connecting terminal; 402-negative electrode connecting terminal;

[0048] 501- management panel; 502- heat dissipation shield; 503- connection row; 504- heat dissipation fins; 505- heat conduction member; 506- heating area;

[0049] 600-fixing bracket; 700-insulating protective part; 800-cover plate.

[0050] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0052] As mentioned in the background technology, in the traditional battery pack design, the connection method of the battery cells is usually more complicated, involving a variety of technologies and processes, such as spot welding, laser welding, bolt connection and conductive adhesive connection, etc. Although these connection methods can achieve effective connection of the battery cells, the connection and assembly process between the battery cells and the supporting shell, and between the battery cells is actually more cumbersome and complex, which affects the later inspection and maintenance, and is not conducive to the rapid and efficient assembly of the battery pack.

[0053] Based on the above relevant description, one or more embodiments of the present application provide a battery pack and an electrical device, wherein, in the battery pack, the pole terminals of multiple battery cells are oriented in the same direction, so that the battery cells are arranged more compactly, which is conducive to integrating more battery cells in an effective space; in addition, the insulating plate can isolate the battery cells and the conductive connectors, reducing the risk of short circuit, and because the pole terminals pass through the insulating plate through the avoidance holes, the pole terminals can be more easily contacted when maintaining or replacing the battery cells, which facilitates 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 double constraint effect ensures the stable fixation of the battery cells, eliminates the complex structure of the battery cell connection in the related technology, and is conducive to improving the overall assembly and subsequent inspection and maintenance efficiency.

[0054] The battery pack and electrical equipment according to the embodiments of the present application are described below with reference to the accompanying drawings.

[0055] like Figures 1 to 3 As shown, an embodiment of the present application provides a battery pack, including a supporting shell 100 , a plurality of battery cells 200 , an insulating plate 300 and a plurality of conductive connectors 400 .

[0056] A plurality of battery cells 200 are placed in a supporting shell 100, and a pole terminal 201 is provided on one side of the battery cell 200, and the pole terminals 201 of the plurality of battery cells 200 face the same direction; an insulating plate 300 is covered on the plurality of battery cells 200, and the insulating plate 300 has an avoidance hole 301 corresponding to the pole terminal 201, and the insulating plate 300 covers the pole terminal 201 side of the battery cell 200, and the pole terminal 201 passes through the insulating plate 300 through the avoidance hole 301; a plurality of conductive connectors 400 are located on a side of the insulating plate 300 away from the battery cell 200, and the conductive connectors 400 are respectively connected to the pole terminals 201 of two adjacent battery cells 200, so that each battery cell 200 is connected in series.

[0057] As can be seen from the above description, in the battery pack in the embodiment of the present application, the pole terminals 201 of the multiple battery cells 200 are oriented in the same direction, which can make the arrangement of the battery cells 200 more compact and reasonable, is conducive to accommodating more battery cells 200 in a limited space, and is convenient for the subsequent connection between the conductive connector 400 and the pole terminal 201; when the insulating plate 300 is covered on the battery cell 200, since the pole terminal 201 passes through the avoidance hole 301, the avoidance hole 301 of the insulating plate 300 constrains and pre-positions the multiple battery cells 200, and the multiple battery cells 200 are placed in the supporting shell 100, and the supporting shell 100 can fix the battery cells 200, effectively ensuring the stable installation of the battery cells 200 and improving the safety and stability of the battery pack. As a result, the complex battery cell 200 fixing structure in the related technology is avoided, which facilitates the assembly of the battery pack and speeds up the assembly period, and is also conducive to the subsequent disassembly and maintenance of the battery pack.

[0058] In the embodiment of the present application, the battery cell 200 may adopt a mature battery cell 200 structure in the related technology, such as a lithium iron phosphate battery cell 200 or a lithium ion battery cell 200. Generally, the battery cell 200 has two pole terminals 201, one positive and one negative. A plurality of battery cells 200 are connected in series to form the entire battery pack. Here, there is no absolute limitation on the specific parameters and internal structure of the battery cell 200.

[0059] like Figure 4 As shown, the support shell 100 in the embodiment of the present application includes a bottom plate 101, a side inner plate 102, a rear inner plate 103 and a front plate 104. The two opposite sides of the bottom plate 101 are bent toward each other to form a fixing portion 1011, and the bottom end of the side 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 of the side inner plate 102 and the bottom plate 101; the rear inner plate 103 is respectively connected to the bottom plate 101 and the side inner plate 102; the front plate 104 is arranged opposite to the rear inner plate 103, and the front plate 104 is respectively connected to the bottom plate 101 and the side inner plate 102; the bottom plate 101, the side inner plate 102, the front plate 104 and the rear inner plate 103 together form a receiving cavity for receiving multiple battery cells 200.

[0060] In the above description, directional words such as "bottom", "front end", and "rear end" are explained with reference to the placement direction of the battery pack. Figure 2 Take the direction shown as an example. Figure 2 The pole terminal 201 of the medium cell 200 is located on the upper side. The two sides of the bottom plate 101 are respectively provided with two side end inner plates 102 . The front side of the bottom plate 101 is provided with a front end plate 104 , and the rear side is provided with a rear end inner plate 103 .

[0061] For example, Figure 5 and Figure 6As shown, a structure fixing part 1011 is provided at the corresponding side end of the bottom plate 101 on the side end inner plate 102. Specifically, the fixing part 1011 is bent vertically upward relative to the main body part of the bottom plate 101 and then bent horizontally toward the central area of the bottom plate 101. Thus, the fixing part 1011 of the bottom plate 101 is configured in a "C" shape. A clamping part is bent on the outer edge of the side end inner plate 102. Specifically, the clamping part is bent horizontally outward relative to the main body part of the side end inner plate 102 to form a first bend 1021 and then bent vertically upward to form a second bend 1022. Thus, the clamping part of the side end inner plate 102 is configured in a "U" shape.

[0062] The clamping part of the side end inner plate 102 is pushed into the fixing part 1011 along the plane where the bottom plate 101 is located to form a clamping connection with the fixing part 1011. Figure 6 It can also be seen that the second bend 1022 of the side end inner plate 102 abuts against the fixing part 1011. This design enables the second bend 1022 to form a supporting force in the height direction with the fixing part 1011, thereby preventing the side end inner plate 102 from detaching from the bottom plate 101. Of course, the clamping constraint between the fixing part 1011 and the clamping part serves as a pre-positioning and enhanced support function. Correspondingly, a fastening connection should also be made between the fixing part 1011 and the clamping part. For example, they are connected by a bolt passing through both of them.

[0063] As an alternative implementation, the connection between the rear end inner plate 103 and the bottom plate 101 can also refer to the above-mentioned clamping structure for connection. That is, a fixing part 1011 is also provided at the side end edge of the bottom plate 101 corresponding to the rear end inner plate 103, and the rear end inner plate 103 is provided with a clamping part. The cooperation and clamping between the fixing part 1011 and the clamping part constitute a limit constraint between the rear end inner plate 103 and the bottom plate 101.

[0064] Since both the bottom plate 101 and the side end inner plate 102 are configured with bends, after their cooperation and clamping, a clamping structure similar to a rectangular frame is formed in the connection area. On the one hand, it increases the connection strength of the overall support housing 100, and on the other hand, it can provide a stable support foundation for the battery cell 200, enhance the connection stability between the bottom plate 101 and the side end inner plate 102, prevent the battery pack from deforming under external force and pressing the internal battery cell 200, and is beneficial to enhancing the overall safety performance of the battery pack.

[0065] Furthermore, as Figure 5 shown, the support housing 100 further includes a rear end outer plate 105 and a side end outer plate 106.

[0066] The rear end outer plate 105 is provided on the outside of the rear end inner plate 103, the side end outer plate 106 is provided on the outside of the side end inner plate 102, and the middle part of the side end outer plate 106 is concavely bent toward the side end inner plate 102.

[0067] The above-mentioned side end outer panel 106 has its upper and lower ends bent outwards compared to the middle area, the middle area of ​​the side end outer panel 106 is fitted with the side end inner panel 102, the upper end of the side end outer panel 106 is bent and horizontally overlapped with the upper end of the side end inner panel 102, and the lower end of the side end outer panel 106 is bent and vertically overlapped with the side end of the bottom plate 101. Thus, the side end outer panel 106, the side end inner panel 102 and the bottom plate 101 all form a stable connection, and the bending design of the side end outer panel 106 is used to enhance the structural strength of the side wall of the supporting shell 100, while also facilitating disassembly, replacement, inspection and maintenance.

[0068] As an alternative implementation, the rear end outer plate 105 may also be designed with a bent portion, and the middle portion of the rear end outer plate 105 is bent inwardly in a concave manner toward the rear end inner plate 103 .

[0069] The rear end outer panel 105 and the rear end inner panel 103, as well as the side end outer panel 106 and the side end inner panel 102 are fixedly connected by common bolts. The rear end outer panel 105 and the side end outer panel 106 can provide an additional protective layer to effectively resist external impact and vibration and protect the internal battery cells 200 from damage.

[0070] In some embodiments, the side outer panel 106 is also provided with a handle and mounting ears to facilitate transportation or installation of the battery pack in an electrical device.

[0071] like Figure 3 As shown, in some embodiments, the insulating plate 300 may be made of epoxy resin plate, polyimide plate, polycarbonate plate or the like. The insulating plate 300 needs to have good mechanical strength and electrical insulation performance, and can effectively restrain the pole terminal 201 , thereby ensuring stable installation of multiple battery cells 200 .

[0072] Furthermore, the upper end surface of the battery cell 200 is also constructed with a protruding reinforcing boss 202, and an avoidance hole 301 is also opened on the insulating plate 300 at a position corresponding to the reinforcing boss 202. When the insulating plate 300 covers the battery cell 200, the avoidance hole 301 corresponds to the pole terminal 201 and the reinforcing boss 202 for engagement and clamping, thereby further enhancing the restraining effect of the insulating plate 300 on the battery cell 200.

[0073] The above-mentioned battery cell 200 has a positive pole terminal 201 and a negative pole terminal 201. When multiple battery cells 200 are arranged in an array, the positive poles and negative poles of two adjacent battery cells 200 are arranged alternately end to end along the array direction. This design can facilitate the conductive connector 400 to connect two adjacent battery cells 200 in series, shorten the connection path, and reduce the risk of failure of the conductive connector 400.

[0074] The conductive connector 400 can be made of a copper sheet or other metal conductive plate, and the conductive connector 400 and the pole terminal 201 can be fixed by bolts, or by laser welding, ultrasonic welding, etc. to form a complete battery module.

[0075] by Figure 7 and Figure 8 As shown, Figure 7 The thick black lines in the figure correspond to the connection paths of each conductive connector 400. When multiple cells 200 are connected in series, the negative electrode of the cell 200 is connected to the positive electrode of the adjacent cell 200. The multiple conductive connectors 400 have a common positive connection terminal 401 and a negative connection terminal 402. The multiple cells 200 eventually lead to a positive connection terminal 401 and a negative connection terminal 402. The positive connection terminal 401 is connected to the positive input terminal of the cell 200 connected in series, and the negative connection terminal 402 is connected to the negative output terminal of the cell 200 connected in series. Multiple cells 200 connected in series can boost the voltage of the battery pack and are used in high-voltage electrical equipment. By connecting multiple cells 200 in series, higher energy output can be provided to improve energy density.

[0076] In addition, multiple battery cells 200 connected in series can also realize a modular battery pack design. The number of battery cells 200 can be increased or decreased according to actual needs to adjust the overall voltage specification and capacity of the battery pack. Since the conductive connector 400 is located on the upper side of the insulating plate 300, when the battery cell 200 is actually replaced and adjusted, there is no need to remove the insulating plate 300 and all the battery cells 200. The pole terminal 201 on the upper side of the insulating plate 300 can be adjusted directly, which is convenient for simplifying the production and maintenance process.

[0077] It should be noted that, in some embodiments, in order to ensure that the battery cell 200 is firmly fixed in the support shell 100, when the actual required voltage capacity of the multiple battery cells 200 is reduced, a "dummy battery cell" with an empty shell can be inserted into the multiple battery cells 200 to ensure that the multiple battery cells 200 fully occupy the internal space of the support shell 100. The dummy battery cell can be constructed by metal plates to form the specifications of a single battery cell 200, but does not have actual use capacity and only serves to fill the internal space of the support shell 100.

[0078] Exemplarily, the voltage of each battery cell 200 is 1.2V, and the required voltage of the battery pack is 18V. Therefore, a total of 15 battery cells 200 + 1 dummy battery cell are arranged in the supporting shell 100, and 8 battery cells 200 are arranged in each layer of the array.

[0079] In the present application embodiment, Fig. 9 As shown, two insulating connection posts 1041 are fixedly disposed on the front end plate 104 . When the battery cell 200 is located in the accommodating cavity, the positive connection terminal 401 and the negative connection terminal 402 are respectively crimped onto one of the insulating connection posts 1041 .

[0080] Here, the insulating connecting column 1041 and the front end plate 104 are integrally formed, and the positive connecting terminal 401 and the negative connecting terminal 402 are fixed to the insulating connecting column 1041 by means of bolts therethrough. This design can provide stable support for the positive connecting terminal 401 and the negative connecting terminal 402 on the one hand, and on the other hand, can ensure that the positive connecting terminal 401 and the negative connecting terminal 402 are in a good insulation state, thereby preventing the positive connecting terminal 401 and the negative connecting terminal 402 from contacting other components inside the supporting shell 100 and causing a short circuit.

[0081] like Fig.10 and Fig.11 As shown, in some embodiments, the battery pack further includes a management panel 501 and a heat dissipation shield 502 .

[0082] The management panel 501 is connected to each battery cell 200 for collecting battery parameters of each battery cell 200. The heat dissipation shield 502 is connected to the management panel 501. The heat dissipation shield 502 is configured with heat dissipation fins 504 on the side facing away from the management panel 501. The heat dissipation shield 502 and the management panel 501 are connected to the outside of the front end plate 104.

[0083] The management panel 501 mentioned above may adopt a battery management system (BMS) board. The management panel 501 is connected to each battery cell 200 through a wiring harness and is responsible for monitoring and managing the charging and discharging process of the battery.

[0084] Exemplarily, the management panel 501 includes components such as data collection and monitoring protection circuits, electrical and communication interfaces, and thermal management. Since the current passes through the resistor elements, the microcontroller that processes a large amount of data, and the protection circuit, the management panel 501 is more likely to have a heat-concentrated heating area 506. By designing a heat dissipation shield 502, the management panel 501 can dissipate heat, thereby ensuring the normal operation of the management panel 501.

[0085] like Figure 1 , Figure 2 and Fig.10 As shown, the management panel 501 and the heat dissipation shield 502 are snapped together and connected by bolts that penetrate the two together. The heat dissipation fins 504 on the heat dissipation shield 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 shield 502 are connected, the connected whole is fixedly connected to the front end panel 104. This design can realize the modular design of the management panel 501 and the support shell 100, which is convenient for disassembly, assembly and maintenance.

[0086] Furthermore, the management panel 501 and the positive electrode connection terminal 401 , and the management panel 501 and the negative electrode connection terminal 402 are connected via a connection bar 503 , and the connection bar 503 is crimped onto the insulating connection column 1041 .

[0087] The connection bar 503 can be a copper connection bar, which has high mechanical strength. Compared with the soft cable connection in the related art, it can avoid being affected by the heat of the management panel 501 or deformed due to external impact, ensuring normal data transmission. Fig. 9 It can also be seen that the connecting copper busbar is crimped to the positive connecting terminal 401 and the negative connecting terminal 402. Therefore, the insulating connecting column 1041 can also support the management panel 501 and the heat dissipation shield 502, which is beneficial to further improve the overall structural strength of the battery pack.

[0088] In some embodiments, the management panel 501 has a plurality of heating areas 506 , and a plurality of heat conducting members 505 are sandwiched between the side of the heat dissipation shield 502 facing the management panel 501 and the management panel 501 , and the heat conducting members 505 are arranged corresponding to the heating areas 506 .

[0089] It should be noted that when the management panel 501 adopts the BMS board in the related art, it should include the corresponding required components such as the reset switch, the display screen, and the functional interface. For management panels 501 of different specifications, the actual heating area 506 is located in different positions, and the position of the heat conductor 505 should also be adjusted accordingly. For example, the heat conductor 505 can be made of thermally conductive silica gel, thermally conductive silicone grease, or other components that transfer heat, and this is not absolutely limited in the embodiments of the present application.

[0090] In the embodiment of the present application, the management panel 501 and each battery cell 200 are connected via a wiring harness. Generally, a temperature control line and a sampling line are connected between the management panel 501 and the battery cell 200.

[0091] The sampling line is used to monitor the voltage of each battery cell 200 in real time. When multiple battery cells 200 are connected in series through a conductive connector 400, a sampling point is set between the positive electrode of each battery cell 200 and the negative electrode of the next battery cell 200, that is, the sampling point is set at the midpoint of the conductive connector 400, thereby monitoring the voltage of adjacent battery cells 200 through a sampling line.

[0092] 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 a thermocouple, etc.) is installed near each battery cell 200 or a group of battery cells 200, and the detection data of the temperature sensor is transmitted to the management panel 501 through the temperature control line.

[0093] In some embodiments, the battery pack further includes at least one fixing bracket 600, which is mounted on the supporting shell 100, and the fixing bracket 600 and the supporting shell 100 jointly constrain a plurality of battery cells 200; a wire passing hole and a wire tying hole are constructed on the side of the fixing bracket 600 facing away from the battery cells 200.

[0094] The fixing bracket 600 is arranged across a plurality of battery cells 200, for example, Fig. 9 As shown, when there are two rows of battery cells 200 arranged in an array, two fixing brackets 600 are provided accordingly, and each fixing bracket 600 spans a row of battery cells 200 to restrain and fix the battery cells 200. Each fixing bracket 600 is provided with a plurality of wire holes and wire tying holes along its length direction. The wire holes are used to pass the sampling wires and temperature control wires between the management panel 501 and the battery cells 200, and the wire tying holes are used to provide a fixing basis for bundling the wire harness.

[0095] It should be noted that, in the embodiment of the present application, an insulating protective member 700 is sandwiched between two adjacent battery cells 200, and an insulating protective member 700 is attached to the inner wall of the supporting shell 100. Here, the inner side of the supporting shell 100 is the corresponding position of the inner side of the side 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.

[0096] The insulating protective member 700 may be made of insulating protective paper or a plate made of insulating material, such as an epoxy resin plate, a polyimide plate, or a polycarbonate plate. This arrangement can prevent the battery cell 200 from being short-circuited by external interference, thereby ensuring the normal operation of the battery pack.

[0097] Of course, the battery pack in the embodiment of the present application should also be covered with a cover plate 800 on the support shell 100, and the cover plate 800 is covered on the support shell 100 to form a complete battery pack. The cover plate 800 and the support shell 100 can be connected by bolts that penetrate the two.

[0098] From the above description, it can be seen that the battery pack in the embodiment of the present application, in addition to the welding connection between the conductive connector 400 and the pole terminal 201, the various panels of the supporting shell 100 and the battery cells 200, and the management panel 501 and the heat dissipation shield 502 are assembled to form an integral battery pack. Compared with the welding and fixing method in the related art, it can effectively reduce the difficulty of assembly, improve the efficiency of assembly line operations, and facilitate subsequent inspection and maintenance disassembly operations.

[0099] In another embodiment of the present application, an electrical device is provided, including a device body and a battery pack in any of the above embodiments, wherein the battery pack is used to supply power to the device body.

[0100] Since the electrical device includes the battery pack in any of the above embodiments, it has all the advantages of the battery pack.

[0101] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0102] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery pack, characterized in that: include: A support housing (100); A plurality of battery cells (200) are arranged in the supporting shell (100), one side of the battery cells (200) is provided with a pole terminal (201), and each pole terminal (201) faces the same direction; An insulating plate (300), the insulating plate (300) having an avoidance hole (301) corresponding to the pole terminal (201), the insulating plate (300) covering the pole terminal (201) side of each battery cell (200), and the pole terminal (201) passing through the avoidance hole (301) out of the insulating plate (300); A plurality of conductive connecting members (400) are located on a side of the insulating plate member (300) away from the battery cells (200), and the conductive connecting members (400) are respectively connected to the pole terminals (201) of two adjacent battery cells (200) so that the battery cells (200) are connected in series.

2. The battery pack according to claim 1, characterized in that: The supporting shell (100) comprises: A bottom plate (101), wherein two opposite sides of the bottom plate (101) are bent toward each other to form fixing portions (1011); The side inner plate (102) has a bottom end bent outwardly and is provided with a clamping portion, wherein the clamping portion cooperates with the fixing portion (1011) to form a position limiting constraint between the side inner plate (102) and the bottom plate (101); A rear end inner plate (103) connected to the bottom plate (101) and the side end inner plate (102) respectively; A front end plate (104) is arranged 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 inner plate (102), the front plate (104) and the rear inner plate (103) together form a receiving cavity for receiving a plurality of the battery cells (200).

3. The battery pack according to claim 2, characterized in that: The supporting shell (100) further comprises: A rear end outer plate (105) is arranged on the outer side of the rear end inner plate (103); The side end outer plate (106) is arranged on the outer side of the side end inner plate (102), and the middle part of the side end outer plate (106) is bent inwardly in a concave manner toward the side end inner plate (102).

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

5. The battery pack according to claim 4, characterized in that: Also includes: A management panel (501) is connected in communication with each of the battery cells (200) to collect battery parameters of each of the battery cells (200); A heat dissipation shield (502) is connected to the management panel (501); a heat dissipation fin (504) is constructed on a side of the heat dissipation shield (502) facing away from the management panel (501); and the heat dissipation shield (502) and the management panel (501) are jointly connected to the outer side of the front end panel (104).

6. The battery pack according to claim 5, characterized in that: The management panel (501) and the positive connection terminal (401), and the management panel (501) and the negative connection terminal (402) are connected via a connection bar (503), and the connection bar (503) is crimped onto the insulating connection column (1041).

7. The battery pack according to claim 5, characterized in that: The management panel (501) has a plurality of heating areas (506), and a plurality of heat conducting members (505) are sandwiched between the side of the heat dissipation shield (502) facing the management panel (501) and the management panel (501), and the heat conducting members (505) are arranged corresponding to the heating areas (506).

8. The battery pack according to any one of claims 1 to 7, characterized in that: Also includes: at least one fixing bracket (600) mounted on the supporting shell (100), wherein the fixing bracket (600) and the supporting shell (100) jointly constrain the plurality of battery cells (200); A wire passing hole and a wire binding hole are configured on a side of the fixing bracket (600) facing away from the battery core (200).

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

10. An electrical device, characterized in that: It comprises a device body and a battery pack as claimed in any one of claims 1 to 9, wherein the battery pack is used to supply power to the device body.

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