Battery pack and powered device

Abstract

The application provides a battery pack and an electric device, wherein the battery pack comprises a box body, a battery module, a collection module, a first high-voltage connector and a first collection line. The box body is provided with a mounting cavity, the battery module is mounted in the mounting cavity, and the battery module is provided with a first total electrode. The collection module is mounted in the mounting cavity, the first high-voltage connector is arranged on the side wall of the box body and electrically connected with the first total electrode, the first collection line is arranged in the mounting cavity, and one end of the first collection line is connected with the first high-voltage connector and the other end is connected with the collection module. The battery pack provided by the application can solve the technical problem that the existing battery pack cannot well grasp the working information at the high-voltage connector.

Description

Technical Field

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

[0002] The battery pack primarily delivers energy safely and reliably to various components of the vehicle system (such as the motor, controller, converter, etc.) via high-voltage connectors, achieving high-voltage, high-current transmission. To ensure safe and efficient operation of the battery pack, related technologies utilize information acquisition modules to collect operating information such as voltage, current, and temperature of the battery cells, enabling better management of cell charging and discharging. However, the voltage and current at the high-voltage connectors are relatively large, and existing battery packs cannot accurately monitor this information, thus failing to promptly detect potential safety issues. Summary of the Invention

[0003] Embodiments of the present invention provide a battery pack and an electrical device that can improve the technical problem that existing battery packs cannot accurately grasp the working information at their high-voltage connectors.

[0004] In a first aspect, embodiments of the present invention provide a battery pack, the battery pack including a housing, a battery module, a data acquisition module, a first high-voltage connector, and a first data acquisition line. The housing has a mounting cavity, the battery module is mounted within the mounting cavity, and the battery module has a first main electrode. The data acquisition module is mounted within the mounting cavity, the first high-voltage connector passes through the side wall of the housing and is electrically connected to the first main electrode, and the first data acquisition line is located within the mounting cavity, with one end connected to the first high-voltage connector and the other end connected to the data acquisition module.

[0005] In one embodiment, the battery pack further includes a first connector, the first high-voltage connector being electrically connected to the first main electrode via the first connector, and one end of the first acquisition line being connected to the first high-voltage connector via the first connector.

[0006] In one embodiment, the first connecting bar is provided with a first connecting part and a first fixing part. The first connecting part is electrically connected to the first high-voltage connector, the first fixing part is connected to one side of the first connecting part, and one end of the first acquisition line is connected to the first fixing part.

[0007] In one embodiment, the housing is further provided with an installation opening communicating with the mounting cavity, the first connecting portion extends along the height direction of the housing, and the first connecting portion has an upper side near the installation opening, and the first fixing portion is connected to the upper side.

[0008] In one embodiment, a second high-voltage connector is also provided on the side wall of the enclosure. The second high-voltage connector and the first high-voltage connector are spaced apart along the height direction of the enclosure, and the second high-voltage connector is closer to the mounting opening than the first high-voltage connector. The first fixing part extends to one side of the first connector along the width direction of the enclosure. When the second high-voltage connector is projected onto the first fixing part along the height direction of the enclosure, the first fixing part is at least partially located outside the projection of the second high-voltage connector.

[0009] In one embodiment, the first fixing part is provided with a first fixing hole for fixing the first acquisition end, and when the second high-voltage connector is projected onto the first fixing part along the height direction of the housing, the first fixing hole is located outside the projection of the second high-voltage connector.

[0010] In one embodiment, a maintenance plug is also provided on the side wall of the enclosure. The maintenance plug is located on one side of the first high-voltage connector along the width direction of the enclosure, and the first fixing part extends away from the maintenance plug along the width direction of the enclosure.

[0011] In one embodiment, one end of the first connecting bar is provided with the first connecting portion and electrically connected to the first high-voltage connector, and the other end is electrically connected to the maintenance plug; the battery pack further includes a third connecting bar, one end of which is electrically connected to the maintenance plug, and the other end is directly or indirectly electrically connected to the first main electrode.

[0012] In one embodiment, the side wall of the housing includes a fixed plate and a detachable plate. The fixed plate has a through-hole communicating with the mounting cavity. The detachable plate covers the mounting hole and is detachably connected to the fixed plate. The first high-voltage connector and the maintenance plug pass through the detachable plate, and the second high-voltage connector passes through either the detachable plate or the fixed plate.

[0013] In one embodiment, a communication plug is also provided on the detachable plate.

[0014] In one embodiment, the battery pack further includes a second connecting bar and a second acquisition line. The battery module is also provided with a second main electrode. The second connecting bar is disposed in the mounting cavity and electrically connected to the second high-voltage connector. The second connecting bar is also electrically connected to the second main electrode. One end of the second acquisition line is connected to the second connecting bar, and the other end is connected to the acquisition module.

[0015] In one embodiment, the first high-voltage connector is provided with a first conductive post, and the first conductive post is provided with a first connecting hole for connecting the first connecting part, the first connecting hole extending through the first conductive post along the width direction of the housing; and / or, the second high-voltage connector is provided with a second conductive post, and the second conductive post is provided with a second connecting hole for connecting the second connecting bar, the second connecting hole extending through the second conductive post along the height direction of the housing.

[0016] Secondly, embodiments of the present invention provide an electrical device, the electrical device including the battery pack described in any of the above embodiments.

[0017] The beneficial effects of the embodiments of the present invention are as follows:

[0018] In an embodiment of the present invention, a first acquisition line is provided inside the battery pack. One end of the first acquisition line is connected to a high-voltage connector, and the other end is connected to an acquisition module. The acquisition module can then acquire information such as temperature, voltage, or current of the first high-voltage connector through the first acquisition line, ensuring that any abnormality at the first high-voltage connector can be detected in a timely manner, thereby improving the safety of the battery pack.

[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a simplified schematic diagram of an embodiment of the battery pack of this application;

[0022] Figure 2 This is a partial structural schematic diagram of an embodiment of the battery pack of this application;

[0023] Figure 3 yes Figure 3 A partial structural diagram of the battery pack in the diagram;

[0024] Figure 4 This is a partial exploded view of an embodiment of the battery pack of this application;

[0025] Figure 5 This is a schematic diagram of the structure of an embodiment of the battery pack in this application at the detachable plate;

[0026] Figure 6This is a schematic diagram of the structure of another embodiment of the battery pack in this application at the detachable plate;

[0027] Figure 7 This is a schematic diagram of the structure of an embodiment of the first connection bar in the battery pack of this application;

[0028] Figure 8 This is a schematic diagram of the structure of an embodiment of the second connection bar in the battery pack of this application;

[0029] Figure 9 This is a schematic diagram of another embodiment of the battery pack in this application at the detachable plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0031] To address the technical problem of inconvenient installation of the acquisition cable used to collect information from high-voltage connectors, which consequently affects production efficiency, the first aspect of this application, such as... Figure 1 As shown, a battery pack 100 is provided, which mainly includes a housing 10, a battery module 20, a data acquisition module 30, a first high-voltage connector 40, a first connector bar 50, and a first data acquisition line 60.

[0032] Among them, it can be combined Figure 1 , Figure 2 and Figure 3 , Figure 2 This is a partial structural schematic diagram of an embodiment of the battery pack 100 of this application. Figure 3 yes Figure 2The diagram shows a partial structural representation. The housing 10 has a mounting cavity 11, within which the battery module 20 is installed. The battery module 20 also has a first main electrode 21. The data acquisition module 30 is installed within the mounting cavity 11. A first high-voltage connector 40 passes through the side wall of the housing 10. A first connecting strip 50 is located within the mounting cavity 11 and electrically connected to the first high-voltage connector 40. The first connecting strip 50 is also directly or indirectly electrically connected to the first main electrode 21. A first data acquisition line 60 is located within the mounting cavity 11, with one end connected to the first connecting strip 50 and the other end connected to the data acquisition module 30.

[0033] Specifically, in this embodiment, the housing 10 is a component used to support and protect the battery module 20. The housing 10 has an approximately rectangular parallelepiped shape, and a mounting cavity 11 is formed inside the housing 10. The battery module 20 and other components (such as the battery management system, thermal management system, etc.) are installed in the mounting cavity 11. Generally, in order to make the housing 10 lightweight, high-strength, and corrosion-resistant, the housing 10 can be made of aluminum. In addition, the bottom plate, top cover, side plates, etc. of the housing 10 can be provided with heat dissipation structures (such as heat dissipation channels) to improve the heat dissipation effect of the battery pack 100. In short, the specific structure of the housing 10 can be flexibly set according to needs, and no specific limitation is made here.

[0034] like Figure 2 and Figure 3 As shown, the battery module 20 is installed in the mounting cavity 11 of the housing 10. The battery module 20 is mainly composed of multiple battery cells connected in series or parallel. Specifically, each battery cell in the battery module 20 has a positive terminal and a negative terminal. The positive terminals of multiple battery cells can be connected to form the total positive terminal of the battery module 20, and the negative terminals of multiple battery cells can be connected to form the total negative terminal of the battery module 20. Alternatively, the positive terminal of one battery cell can be connected to the negative terminal of another battery cell one by one to realize the series connection of multiple battery cells. The positive terminal of the series-connected multiple battery cells at one end forms the total positive terminal of the battery module 20, and the negative terminal at the other end forms the total negative terminal of the battery module 20.

[0035] The battery module 20 achieves current output and input to an external load through a total positive terminal and a total negative terminal. In this embodiment, it can be referred to... Figure 1 or Figure 2 The battery module 20 is provided with a first total electrode 21 and a second total electrode 22, one of which is the total positive electrode and the other is the total negative electrode.

[0036] like Figure 1As shown, the acquisition module 30 is located inside the mounting cavity 11. In this embodiment, the acquisition module 30 can be a battery management system (BMS), a module within the battery management system specifically designed to receive acquired information, or a circuit module independent of the battery management system. In short, the specific structure of the acquisition module 30 can be flexibly configured as needed, as long as the acquisition module 30 can receive the information transmitted from the acquisition line and perform corresponding processing and feedback.

[0037] like Figure 1 As shown, the first high-voltage connector 40 is installed on the side wall of the housing 10. Specifically, in this embodiment, corresponding to the first main electrode 21 and the second main electrode 22 of the battery module 20, the first high-voltage connector 40 and the second high-voltage connector 70 are installed on the side wall of the housing 10. The first high-voltage connector 40 is directly or indirectly electrically connected to the first main electrode 21, and the second high-voltage connector 70 is directly or indirectly electrically connected to the second main electrode 22.

[0038] External loads are electrically connected to the battery pack 100 through the first high-voltage connector 40 and the second high-voltage connector 70. For example, when the battery pack 100 is used in a car, the motor, controller, converter and other components in the vehicle system transfer energy to the battery pack 100 through the first high-voltage connector 40 and the second high-voltage connector 70.

[0039] In this embodiment, as Figure 1 or Figure 4 As shown, the first high-voltage connector 40 is indirectly electrically connected to the first main electrode 21 of the battery module 20. Specifically, the battery pack 100 of this application also includes a first connecting bus 50, which is a high-voltage copper bus. The first connecting bus 50 is located in the mounting cavity 11 and is electrically connected to the first high-voltage connector 40. The first connecting bus 50 is also directly or indirectly electrically connected to the first main electrode 21, so that the electrical connection between the first high-voltage connector 40 and the first main electrode 21 can be realized.

[0040] It should be noted that the first connecting strip 50 can be directly connected to the first main electrode 21 of the battery module 20, or it can be electrically connected to the first main electrode 21 through an intermediate conductive component. For example, in one embodiment, the first connecting strip 50 is connected between the first high-voltage connector 40 and the fuse 140, and between the fuse 140 and the first main electrode 21. This not only achieves the electrical connection between the first high-voltage connector 40 and the first main electrode 21, but also allows the fuse 140 to disconnect the current loop between the first high-voltage connector 40 and the first main electrode 21 when the current is too high.

[0041] Crucially, in this application, one end of the first acquisition line 60 is connected to the first high-voltage connector 40, and the other end is connected to the acquisition module 30. Specifically, the first acquisition line 60 can be used to acquire one or more of voltage, current, and temperature. The acquisition module 30 can then acquire relevant information about the first high-voltage connector 40 through the first acquisition line 60, ensuring that any abnormalities at the first high-voltage connector can be detected promptly, thus improving the safety of the battery pack.

[0042] It should be noted that, because the first high-voltage connector 40 is embedded in the side wall of the housing 10, the part of the first high-voltage connector 40 located inside the housing 10 needs to be electrically connected to the main electrode of the battery module. In the case of limited space inside the housing 10 and obstruction by other components, the installation process of connecting the first acquisition line 60 to the high-voltage connector may not be convenient, which may affect production efficiency.

[0043] Therefore, in view of the above technical problems, in one embodiment, such as Figure 1 or Figure 3 As shown, the first acquisition line 60 is located inside the mounting cavity 11, and one end of the first acquisition line 60 is connected to the first connecting strip 50, and the other end is connected to the acquisition module 30. Since the first connecting strip 50 is electrically connected to the first high-voltage connector 40, the voltage, current, temperature and other information on the first connecting strip 50 are basically equal to the voltage, current, temperature and other information on the first high-voltage connector 40. Thus, the voltage, current, temperature and other information of the first high-voltage connector 40 can be detected and acquired.

[0044] It should be noted that the connection between the first connecting strip 50 and the first high-voltage connector 40, and between the acquisition line and the first connecting strip 50, can be achieved through threaded connections, welding, interference fit, etc. The specific connection method can be flexibly selected according to the needs.

[0045] It is understood that this application achieves the electrical connection between the first high-voltage connector 40 and the first main electrode 21 by electrically connecting the first connecting strip 50 to the first high-voltage connector 40 and electrically connecting the first connecting strip 50 to the first main electrode 21 of the battery module 20. Then, one end of the first acquisition line 60 is connected to the first connecting strip 50, and the other end is connected to the acquisition module 30. Since the first connecting strip 50 is electrically connected to the first high-voltage connector 40, the first acquisition line 60 can acquire information such as temperature, voltage, or current of the first high-voltage connector 40 through the first connecting strip 50 and transmit the information of the first high-voltage connector 40 to the acquisition module 30.

[0046] Additionally, it can be understood that because one end of the first acquisition line 60 is not directly connected to the first high-voltage connector 40, but is connected to the first connecting bar 50 which is electrically connected to the first high-voltage connector 40, the connection and installation of the first acquisition line 60 can be made more convenient while ensuring that the information of the first high-voltage connector 40 can be acquired. This improves production efficiency and effectively solves the technical problem that the acquisition line used to acquire information from the high-voltage connector is inconvenient to install, which in turn affects production efficiency.

[0047] Optionally, in one embodiment, such as Figure 6 or Figure 7 As shown, the first connecting bar 50 is provided with a first connecting part 51 and a first fixing part 52. The first connecting part 51 is electrically connected to the first high voltage connector 40, and the first fixing part 52 is connected to one side of the first connecting part 51. One end of the first acquisition line 60 is connected to the first fixing part 52.

[0048] Specifically, in this embodiment, such as Figure 7 As shown, a section of plate at the end of the first connecting row 50 constitutes the first connecting part 51, as... Figure 5 As shown, the first high-voltage connector 40 is provided with a first conductive post 41, such as... Figure 6 As shown, the first connecting part 51 is electrically connected to and fixedly connected to the first conductive post 41. The first fixing part 52 is also plate-shaped, and the first fixing part 52 is connected to one side of the first connecting part 51. One end of the first acquisition line 60 is fixedly connected to the first fixing part 52.

[0049] It is understood that in this embodiment, the first connecting strip 50 is electrically connected to the first high-voltage connector 40 through the first connecting part 51, and the first fixing part 52 for connecting to the first acquisition line 60 is connected to one side of the first connecting part 51. This allows the connection position of the first acquisition line 60 on the first connecting strip 50 to be closer to the first high-voltage connector 40, thereby ensuring that the acquired information is closer to the real information of the first high-voltage connector 40, and avoiding the situation where the connection position of the first acquisition line 60 on the first connecting strip 50 is too far from the first high-voltage connector 40, resulting in a large deviation in the acquired information.

[0050] Optionally, in one embodiment, such as Figure 4 As shown, the housing 10 also has a mounting opening 12 that communicates with the mounting cavity 11. Please refer to... Figure 7 The first connecting part 51 extends along the height direction of the housing 10, and the first connecting part 51 has an upper side 511 close to the mounting opening 12, and the first fixing part 52 is connected to the upper side 511.

[0051] For details, please refer to Figure 3 and Figure 4With the first connecting strip 50 already positioned within the mounting cavity 11 and connected to the first high-voltage connector 40, the first acquisition line 60 needs to enter the mounting cavity 11 through the mounting opening 12 and connect to the first fixing part 52. In this embodiment, it can be combined with... Figure 7 and Figure 4 It is understood that the first connecting part 51 extends vertically along the height direction of the housing 10. The first connecting part 51 has an upper side 511 near the mounting opening 12, and a first fixing part 52 for fixing the first acquisition line 60 is connected to the upper side 511. It is understood that when the first fixing part 52 is connected to the upper side 511 of the first connecting part 51, it will be closer to the mounting opening 12, so that the depth of the first fixing part 52 within the mounting cavity 11 will not be too deep, thereby improving the ease of installation of the first acquisition line 60.

[0052] It should be noted here that, in order for the first connecting part 51 to extend vertically along the height direction of the housing 10, as... Figure 5 As shown, the first conductive post 41 is provided with a first connecting hole 411, which extends through the first conductive post 41 along the width direction of the housing 10, as shown. Figure 7 As shown, the first connecting part 51 is provided with a third connecting hole 512. Please refer to the diagram below. Figure 6 During assembly, the third connecting hole 512 is aligned with the first connecting hole 411. Then, the threaded connector is passed through the third connecting hole 512 and the first connecting hole 411 to press the first connecting part 51 onto the first conductive post 41. This not only enables the electrical connection between the first connecting bus 50 and the first high-voltage connector 40, but also allows the first connecting part 51 to extend vertically along the height direction of the housing 10.

[0053] Optionally, in one embodiment, such as Figure 6 As shown, a second high-voltage connector 70 is also provided on the side wall of the housing 10. The second high-voltage connector 70 and the first high-voltage connector 40 are spaced apart along the height direction of the housing 10, and the second high-voltage connector 70 is closer to the mounting opening 12 than the first high-voltage connector 40. The first fixing part 52 extends to one side of the first connecting part 51 along the width direction of the housing 10. When the second high-voltage connector 70 is projected onto the first fixing part 52 along the height direction of the housing 10, the first fixing part 52 is at least partially located outside the projection of the second high-voltage connector 70.

[0054] Specifically, in this embodiment, you can refer to Figure 1 and Figure 6The second high-voltage connector 70 is used for direct or indirect electrical connection with the second main electrode 22 of the battery module 20. The second high-voltage connector 70 is located directly above the first high-voltage connector 40 along the height direction of the housing 10; that is, the second high-voltage connector 70 is closer to the mounting opening 12 than the first high-voltage connector 40. Because of this, the second high-voltage connector 70 may obstruct the first fixing part 52, thereby affecting the fixing of the first acquisition line 60 to the first fixing part 52.

[0055] Therefore, in this embodiment, the first fixing part 52 extends along the width direction of the housing 10 towards one side of the first connecting part 51. Specifically, taking the width direction of the housing 10 as the left-right direction, the first fixing part 52 can extend from the first connecting part 51 to the right side of the first connecting part 51, or it can extend from the first connecting part 51 to the left side of the first connecting part 51. Furthermore, in this embodiment, when the second high-voltage connector 70 is projected onto the first fixing part 52 along the height direction of the housing 10, the first fixing part 52 is at least partially located outside the projection of the second high-voltage connector 70. That is, the first fixing part 52 is at least partially not obstructed by the second high-voltage connector 70, and one end of the first acquisition line 60 can be fixed on the first fixing part 52 at a position not obstructed by the second high-voltage connector 70, thereby facilitating the installation of the first acquisition line 60.

[0056] Optionally, in one embodiment, such as Figure 7 As shown, the first fixing part 52 is provided with a first fixing hole 521 for fixing the first acquisition end. Please refer to the diagram below. Figure 6 When the second high-voltage connector 70 is projected onto the first fixing part 52 along the height direction of the housing 10, the first fixing hole 521 is located outside the projection of the second high-voltage connector 70.

[0057] Specifically, in this example, such as Figure 9 As shown, the end of the first acquisition line 60 that is connected to the first fixing part 52 is an OT terminal and has a third fixing hole 61. During assembly, the OT terminal is first placed on the first fixing part 52 and the third fixing hole 61 is connected to the first fixing hole 521. Then, the threaded connector is passed through the third fixing hole 61 and the first fixing hole 521 to press the OT terminal onto the first fixing part 52 through the threaded connector. In this way, the fixed connection of one end of the first acquisition line 60 on the first fixing part 52 is achieved.

[0058] To ensure that the threaded connector is not obstructed by the second high-pressure connector 70 during assembly, in this embodiment, reference can be made to... Figure 6When the second high-voltage connector 70 is projected onto the first fixing part 52 along the height direction of the housing 10, the first fixing hole 521 is located outside the projection of the second high-voltage connector 70, that is, the first fixing hole 521 will not be blocked by the second high-voltage connector 70 at all, which makes it convenient for the threaded connector to fix one end of the first acquisition line 60 to the first fixing part 52.

[0059] Optionally, in one embodiment, such as Figure 6 As shown, a maintenance plug 80 is also provided on the side wall of the housing 10. The maintenance plug 80 is located on one side of the first high-voltage connector 40 along the width direction of the housing 10, and the first fixing part 52 extends away from the maintenance plug 80 along the width direction of the housing 10.

[0060] Specifically, in this embodiment, the service plug 80 is a Manual Service Disconnect (MSD). The MSD is a special switch whose main function is to quickly disconnect the high-voltage circuit manually during vehicle maintenance or emergencies, ensuring the safety of maintenance personnel and preventing damage to other vehicle components from high-voltage current. The MSD not only provides electrical isolation but also rapidly cuts off the high-voltage circuit in the event of a sudden short circuit, providing short-circuit protection.

[0061] The maintenance plug 80 is typically embedded in the side wall of the housing 10, with a portion of it exposed outside the housing 10 for easy manual operation. The maintenance plug 80 is also partially located within the mounting cavity 11 and connected to the high-voltage circuit of the battery pack 100. In this embodiment, the maintenance plug 80 is located on one side of the first high-voltage connector 40 along the width direction of the housing 10. Furthermore, to prevent the maintenance plug 80 from interfering with the installation of the first acquisition line 60 on the first fixing part 52, in this embodiment, the first fixing part 52 extends away from the maintenance plug 80 along the width direction of the housing 10. This allows the first acquisition line 60 to be fixed to the first fixing part 52 without obstruction by the maintenance plug 80, thus facilitating its installation.

[0062] It should be noted in this embodiment that the maintenance plug 80 can be connected in the circuit between the first high-voltage connector 40 and the first main electrode 21, or it can be connected in the circuit between the second high-voltage connector 70 and the second main electrode 22. The specific connection position of the maintenance plug 80 can be flexibly selected.

[0063] For example, optionally, in one embodiment, such as Figure 1 and Figure 6As shown, one end of the first connecting bar 50 is provided with a first connecting part 51 and is electrically connected to the first high-voltage connector 40, and the other end is electrically connected to the maintenance plug 80. The battery pack 100 also includes a third connecting bar 90, which is also a high-voltage copper busbar. One end of the third connecting bar 90 is electrically connected to the maintenance plug 80, and the other end is directly or indirectly electrically connected to the first main electrode 21. In this way, the maintenance plug 80 is connected in the circuit between the first high-voltage connector 40 and the first main electrode 21, so that the high-voltage circuit between the first high-voltage connector 40 and the first main electrode 21 can be disconnected through the maintenance plug 80 in maintenance or emergency situations.

[0064] It should be noted that the third connecting row 90 can be directly electrically connected to the first main electrode 21, or it can be indirectly electrically connected to the first main electrode 21 through an intermediate conductive element. For example, in one embodiment, as shown... Figure 1 As shown, the battery pack 100 also includes a fuse 140, which is connected between the third connection bar 90 and the first main electrode 21. This enables the electrical connection between the first and third connection bars 90 and the first main electrode 21, and can automatically disconnect the high-voltage circuit between the first high-voltage connector 40 and the first main electrode 21 when the current is too high.

[0065] Optionally, in one embodiment, such as Figure 4 As shown, one side wall of the housing 10 includes a fixed plate 13 and a detachable plate 14. The fixed plate 13 has a through-hole 15 that communicates with the mounting cavity 11. The detachable plate 14 covers the mounting hole 15 and is detachably connected to the fixed plate 13. A first high-voltage connector 40 and a maintenance plug 80 are installed on the detachable plate 14, and a second high-voltage connector 70 is installed on either the detachable plate 14 or the fixed plate 13.

[0066] Specifically, in this example, such as Figure 6 As shown, the first connecting bar 50 is connected to the first high-voltage connector 40 via the first threaded connector 150. Figure 6 In the process, the first threaded connector 150 is a bolt, and during assembly, the first threaded connector 150 needs to be screwed from the side of the first connection part 51 away from the maintenance plug 80 to the first connection part 51 and the first high-voltage connector 40.

[0067] The first connecting strip 50 is also fixed to the maintenance plug 80 via the second threaded connector 160. Figure 6 In the process, the second threaded connector 160 is a nut, and during assembly, the second threaded connector 160 needs to press the first connector 50 onto the service plug 80 from the side of the first connector 50 closest to the battery module 20.

[0068] One end of the third connecting strip 90 is fixed to the maintenance plug 80 via the third threaded connector 170. Figure 6 In the process, the third threaded connector 170 is a nut, and during assembly, the third threaded connector 170 needs to be pressed onto the service plug 80 from the side of the third connector 90 closest to the battery module 20.

[0069] Please refer to Figure 3 ,exist Figure 3 If the first threaded connector 150, the second threaded connector 160, and the third threaded connector 170 are all assembled within the mounting cavity 11, the first threaded connector 150 will be inconvenient to assemble due to the obstruction of the side wall of the housing 10, and the second threaded connector 160 and the third threaded connector 170 will be inconvenient to assemble due to the obstruction of the battery module 20.

[0070] Therefore, to improve assembly convenience, such as Figure 4 As shown, in this embodiment, the side wall of the housing 10 includes a fixed plate 13 and a detachable plate 14. The fixed plate 13 has a through-hole 15 that communicates with the mounting cavity 11. The detachable plate 14 covers the mounting hole 15 and is detachably connected to the fixed plate 13. The first high-voltage connector 40 and the maintenance plug 80 are installed on the detachable plate 14.

[0071] Therefore, during assembly, the detachable plate 14 can be removed from the fixed plate 13 first. Then, the first connecting strip 50 is fixed to the detachable plate 14 using the first threaded connector 150 and the second threaded connector 160, and the third connecting strip 90 is fixed to the detachable plate 14 using the third threaded connector 170. Since the detachable plate 14 is not fixed to the fixed plate 13, the first threaded connector 150, the second threaded connector 160, and the third threaded connector 170 can be assembled without any obstruction, making assembly more convenient. Finally, the detachable plate 14, with the first connecting strip 50 and the second connecting strip 120 fixed, is installed onto the fixed plate 13, thus fixing the first connecting strip 50 and the third connecting strip 90 within the mounting cavity 11, greatly improving the assembly convenience of the first connecting strip 50 and the third connecting strip 90.

[0072] It should be noted that the second high-voltage connector 70 can be installed on the detachable plate 14 or the fixed plate 13. Since the second high-voltage connector 70 is relatively close to the installation opening 12, the second connecting strip 120 can be easily connected to the second high-voltage connector 70 regardless of whether it is installed on the detachable plate 14 or the fixed plate 13.

[0073] In one embodiment, such as Figure 4As shown, the second high-voltage connector 70 is mounted on the detachable plate 14. During assembly, the detachable plate 14 is first fixed to the fixed plate 13, and then the second connecting bar 120 is connected between the second high-voltage connector 70 and the second main electrode 22.

[0074] Optionally, in one embodiment, such as Figure 4 As shown, a communication plug 110 is also installed on the detachable panel 14. Specifically, in order to enable communication between the battery pack 100 and key devices such as the vehicle controller and charger, the battery pack 100 is usually equipped with a communication plug 110. The battery pack 100 communicates with key devices such as the vehicle controller and charger through the communication plug 110. The communication plug 110 is usually installed on the side wall of the housing 10, but in this embodiment, the communication plug 110 is installed on the detachable panel 14, so that the communication plug 110 can be removed along with the detachable panel 14, thereby facilitating the installation, removal, and maintenance of the communication plug 110.

[0075] Optionally, in one embodiment, such as Figure 9 As shown, the battery pack 100 also includes a second connecting strip 120 and a second acquisition line 130, such as... Figure 1 As shown, the battery module 20 also includes a second main electrode 22. One of the first main electrode 21 and the second main electrode 22 is the main positive electrode, and the other is the main negative electrode. Please refer to... Figure 3 and Figure 9 The second connecting strip 120 is located inside the mounting cavity 11 and is electrically connected to the second high-voltage connector 70. The second connecting strip 120 is also electrically connected to the second main electrode 22, thus achieving an electrical connection between the second high-voltage connector 70 and the second main electrode 22. One end of the second acquisition line 130 is connected to the second connecting strip 120, and the other end is connected to the acquisition module 30. The acquisition module 30 can then acquire information such as voltage, current, and temperature on the second connecting strip 120 via the second acquisition line 130. Since the second connecting strip 120 is electrically connected to the second high-voltage connector 70, the voltage, current, and temperature information on the second connecting strip 120 are essentially equal to the voltage, current, and temperature information on the second high-voltage connector 70. Therefore, the voltage, current, and temperature information of the second high-voltage connector 70 can be detected and acquired.

[0076] That is, in this embodiment, the acquisition module 30 detects and acquires information such as voltage, current and temperature of the first high-voltage connector 40 and the second high-voltage connector 70 of the battery pack 100. This allows for better monitoring of the information of each high-voltage connector, thereby better controlling the battery pack 100 to achieve safer and more efficient operation.

[0077] Optionally, in one embodiment, such as Figure 8As shown, the second connecting bar 120 is provided with a second connecting part 121 and a second fixing part 122. The second connecting part 121 is connected to the side of the second high voltage connector 70 near the mounting opening 12, the second fixing part 122 is connected to the side of the second connecting part 121, and one end of the second acquisition line 130 is connected to the second connecting part 121.

[0078] Specifically, in this embodiment, a section of plate at the end of the second connecting row 120 constitutes the second connecting portion 121, such as... Figure 5 or Figure 6 As shown, the second high-voltage connector 70 is provided with a second conductive post 71, and the second connecting part 121 is electrically connected to and fixedly connected to the second conductive post 71. The second fixing part 122 is also plate-shaped, and the second fixing part 122 is connected to one side of the second connecting part 121. One end of the second acquisition line 130 is fixedly connected to the second fixing part 122.

[0079] It is understood that in this embodiment, the second connecting strip 120 is electrically connected to the second high-voltage connector 70 through the second connecting part 121, and the second fixing part 122 for connecting to the second acquisition line 130 is connected to one side of the second connecting part 121. This allows the connection position of the second acquisition line 130 on the second connecting strip 120 to be closer to the second high-voltage connector 70, thereby ensuring that the acquired information is closer to the true information of the second high-voltage connector 70, and avoiding the situation where the connection position of the second acquisition line 130 on the second connecting strip 120 is too far from the second high-voltage connector 70, resulting in a large deviation in the acquired information.

[0080] Optionally, in one embodiment, such as Figure 5 As shown, the first high-voltage connector 40 is provided with a first conductive post 41, and the first conductive post 41 is provided with a first connecting hole 411 for connecting the first connecting part 51. The first connecting hole 411 extends through the first conductive post 41 along the width direction of the housing 10. Specifically, in this embodiment, as... Figure 7 As shown, the first connecting part 51 is provided with a third connecting hole 512. Please refer to... Figure 6 During assembly, the first connecting part 51 is placed on one side of the first conductive post 41 along the axial direction of the first connecting hole 411, and the third connecting hole 512 and the first connecting hole 411 are connected accordingly. Then, the threaded connector passes through the third connecting hole 512 and the first connecting hole 411 in sequence, so that the threaded connector presses the first connecting part 51 against one side of the first conductive post 41.

[0081] It is understandable that, since the first connecting hole 411 extends along the width direction of the housing 10, when the first connecting part 51 is fixed to the first conductive post 41, the threaded connector can be screwed onto the first connecting part 51 and the first conductive post 41 along the width direction of the housing 10, so that it will not be affected by the second high voltage connector 70, which facilitates the assembly of the first connecting strip 50.

[0082] Optionally, in one embodiment, such as Figure 5 As shown, the second high-voltage connector 70 is provided with a second conductive post 71, and the second conductive post 71 is provided with a second connecting hole 711 for connecting the second connecting part 121. The second connecting hole 711 extends through the second conductive post 71 along the height direction of the housing 10. Specifically, in this embodiment, as... Figure 8 As shown, the second connecting part 121 is provided with a fourth connecting hole 1211. Please refer to the diagram. Figure 9 During assembly, the second connecting part 121 is placed above the second conductive post 71 along the axial direction of the second connecting hole 711, and the fourth connecting hole 1211 is connected to the second connecting hole 711. Then, the threaded connector passes through the fourth connecting hole 1211 and the second connecting hole 711 in sequence, so that the threaded connector presses the second connecting part 121 onto the second conductive post 71.

[0083] It is understandable that, since the second high-voltage connector 70 is relatively close to the mounting opening 12 of the housing 10, when the second connecting hole 711 is extended along the height direction of the housing 10, the assembler can screw the threaded connector onto the second connecting part 121 and the second conductive post 71 from top to bottom, which makes it easier to assemble the second connecting bar 120.

[0084] Optionally, in one embodiment, such as Figure 8 As shown, the second fixing part 122 is provided with a second fixing hole 1221, such as Figure 9 As shown, the end of the second acquisition line 130 that is connected to the first fixing part 52 is an OT terminal and has a fourth fixing hole 131. During assembly, the OT terminal is first placed on the second fixing part 122 and the fourth fixing hole 131 is connected to the first fixing hole 521. Then, the threaded connector is passed through the fourth fixing hole 131 and the second fixing hole 1221 to press the OT terminal onto the second fixing part 122 through the threaded connector. This achieves the fixed connection of one end of the second acquisition line 130 on the second fixing part 122.

[0085] This application also provides an electrical device, which includes a battery pack 100. The specific structure of the battery pack 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0086] Among them, electrical equipment can be automobiles, ships, industrial equipment, household appliances, etc.

[0087] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery pack, characterized in that, include: The enclosure has a mounting cavity; A battery module is installed in the mounting cavity, and the battery module is provided with a first main electrode; The acquisition module is installed inside the mounting cavity; A first high-voltage connector is inserted through the side wall of the housing and electrically connected to the first main electrode; and... A first acquisition line is located inside the mounting cavity, with one end of the first acquisition line connected to the first high-voltage connector and the other end connected to the acquisition module. The battery pack further includes a first connecting bar, the first high-voltage connector is electrically connected to the first main electrode through the first connecting bar, one end of the first acquisition line is connected to the first high-voltage connector through the first connecting bar, the first connecting bar is provided with a first connecting part and a first fixing part, the first connecting part is electrically connected to the first high-voltage connector, the first fixing part is connected to one side of the first connecting part, and one end of the first acquisition line is connected to the first fixing part. A second high-voltage connector is also provided on the side wall of the enclosure. The second high-voltage connector and the first high-voltage connector are spaced apart along the height direction of the enclosure. The first fixing part extends along the width direction of the enclosure towards one side of the first connector. When the second high-voltage connector is projected onto the first fixing part along the height direction of the enclosure, the first fixing part is at least partially located outside the projection of the second high-voltage connector.

2. The battery pack according to claim 1, characterized in that, The housing is also provided with an installation opening communicating with the mounting cavity. The first connecting part extends along the height direction of the housing and has an upper side near the installation opening. The first fixing part is connected to the upper side.

3. The battery pack according to claim 2, characterized in that, The second high-voltage connector is closer to the mounting opening than the first high-voltage connector.

4. The battery pack according to claim 1, characterized in that, The first fixing part is provided with a first fixing hole for fixing the first acquisition line. When the second high voltage connector is projected onto the first fixing part along the height direction of the box, the first fixing hole is located outside the projection of the second high voltage connector.

5. The battery pack according to claim 1, characterized in that, A maintenance plug is also provided on the side wall of the enclosure. The maintenance plug is located on one side of the first high-voltage connector along the width direction of the enclosure, and the first fixing part extends away from the maintenance plug along the width direction of the enclosure.

6. The battery pack according to claim 5, characterized in that, One end of the first connecting bar is provided with the first connecting part and is electrically connected to the first high-voltage connector, and the other end is electrically connected to the maintenance plug; the battery pack also includes a third connecting bar, one end of which is electrically connected to the maintenance plug, and the other end is directly or indirectly electrically connected to the first main electrode.

7. The battery pack according to claim 5, characterized in that, The side wall of the enclosure includes a fixed plate and a detachable plate. The fixed plate has a through-hole that communicates with the mounting cavity. The detachable plate covers the mounting hole and is detachably connected to the fixed plate. The first high-voltage connector and the maintenance plug are installed on the detachable plate, and the second high-voltage connector is installed on either the detachable plate or the fixed plate.

8. The battery pack according to claim 7, characterized in that, A communication plug is also installed on the detachable plate.

9. The battery pack according to any one of claims 1-8, characterized in that, The battery pack also includes a second connecting bar and a second acquisition line. The battery module is also provided with a second main electrode. The second connecting bar is disposed in the mounting cavity and electrically connected to the second high-voltage connector. The second connecting bar is also electrically connected to the second main electrode. One end of the second acquisition line is connected to the second connecting bar, and the other end is connected to the acquisition module.

10. The battery pack according to claim 9, characterized in that, The first high-voltage connector is provided with a first conductive post, and the first conductive post is provided with a first connecting hole for connecting the first connecting part, and the first connecting hole passes through the first conductive post along the width direction of the housing; And / or, the second high-voltage connector is provided with a second conductive post, and the second conductive post is provided with a second connecting hole for connecting the second connecting bar, the second connecting hole extending through the second conductive post along the height direction of the housing.

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

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