Battery pack and powered device

Abstract

The present disclosure provides a battery pack, and relates to the field of batteries. The battery pack comprises a box body, a plurality of battery groups, a plurality of first conductive rows and a first electric connector. The box body comprises a plurality of first containers stacked together along a first direction. The plurality of battery groups are respectively accommodated in the plurality of first containers. The plurality of first conductive rows are electrically connected with the plurality of battery groups. The first electric connector is electrically connected with the plurality of battery groups through the plurality of first conductive rows, and is used to be electrically connected with an external power source and / or an external load. Accordingly, by converging the plurality of first conductive rows electrically connected with the plurality of battery groups to the first electric connector, the entire battery pack can be electrically connected with the external power source and / or the external load through the first electric connector only, and the charging and discharging operation is completed. This can effectively reduce the number of electric connectors, reduce the manufacturing cost, avoid the risk of misoperation caused by multiple electric connectors, and thus simplify the connection structure and assembly process of the battery pack with the external power source and / or the external load.

Description

Technical Field

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

[0002] As electric vehicles, large-scale energy storage systems, and other external electrical devices increasingly demand higher power density and longer driving range, they place higher demands on the operating voltage and capacity of battery packs. In the past, to meet the high voltage and large capacity power output requirements of these devices, multiple battery packs were typically stacked together by connecting them in series to increase voltage or in parallel to increase capacity. However, when these stacked battery packs are electrically connected to external electrical devices, they require multiple connectors from multiple battery packs, resulting in complex connection structures, inconvenient assembly operations, and low efficiency during later maintenance and repair. Utility Model Content

[0003] In view of this, the present disclosure provides a battery pack to at least solve or improve the problems of complex connection structure between the battery pack and the electrical equipment and inconvenient assembly operation.

[0004] The battery pack disclosed herein includes a housing, multiple battery packs, multiple first conductive bars, and a first electrical connector. The housing includes multiple first containers stacked together along a first direction. The multiple battery packs are respectively housed in the multiple first containers. The multiple first conductive bars are respectively electrically connected to the multiple battery packs. The first electrical connector is electrically connected to the multiple battery packs through the multiple first conductive bars and is used for electrical connection to an external power source and / or an external load.

[0005] In this disclosure, by connecting multiple first conductive busbars, each electrically connected to a corresponding battery pack, to a first electrical connector, the entire battery pack can be electrically connected to an external power source and / or external load solely through the first electrical connector to complete charging and discharging operations. This effectively reduces the number of electrical connectors, lowers manufacturing costs, avoids the risk of misoperation caused by multiple electrical connectors, and simplifies the connection structure and assembly process between the battery pack and the external power source and / or external load. Simultaneously, it improves the compactness and ease of maintenance of the overall battery pack structure. Furthermore, by incorporating multiple battery packs, the battery pack can achieve higher voltage and larger capacity, while also extending its power supply capability to meet higher energy demands, further enhancing the overall lifespan and reliability of the battery pack.

[0006] This disclosure also provides an electrical device that includes the battery pack described above. Attached Figure Description

[0007] It should be understood that the following figures only show some embodiments of the present invention and should not be regarded as a limitation on the scope.

[0008] It should be understood that the same or similar reference numerals are used in the accompanying drawings to denote the same or similar elements.

[0009] It should be understood that the accompanying drawings are only schematic, and the dimensions and scales of the elements in the drawings are not necessarily precise.

[0010] Figure 1 This is a schematic diagram of the structure of a battery pack according to an embodiment of the present disclosure.

[0011] Figure 2 for Figure 1 A magnified view of part A in the middle.

[0012] Figure 3 for Figure 1 Another structural diagram of the battery pack in the diagram.

[0013] Figure 4 for Figure 3 A magnified view of part B in the middle section.

[0014] Figure 5 This is a schematic diagram of the structure of an electrical device according to an embodiment of the present disclosure.

[0015] Figure Labels Battery pack-100; Battery-10; Box-20; First container-21; Second container-22; Top cover-23; Opening-231; Separator beam-24; First conductor bar-31; Second conductor bar-32; Wiring harness-33; Sub-controller-34; Circuit breaker-50; Electrical equipment-200. Detailed Implementation

[0016] Numerous specific details are set forth below to provide an understanding of the structure, function, and use of the embodiments described and illustrated in the specification and figures. It is to be understood that the embodiments described and illustrated herein are non-limiting examples, and thus it will be appreciated that the particular structural and functional details disclosed herein are representative and exemplary. Variations and changes may be made to these embodiments without departing from the scope of the claims.

[0017] <Example Battery Pack> refer to Figure 1According to one embodiment of this disclosure, a battery pack 100 may include a battery group composed of multiple batteries connected in series and parallel, and integrate a battery management system (BMS), a thermal management system, an electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, brackets, etc.), and protective components. The battery pack 100 may also include a housing 20, in which the aforementioned components are housed and sealed by a top cover, forming a complete functional unit capable of directly outputting electrical energy. The sealed structure formed by the housing 20 and the top cover effectively prevents external collisions, compression, and vibrations from affecting the battery group, battery management system (BMS), thermal management system, and electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.) and other components inside the housing. Furthermore, the sealed structure formed by the housing 20 and the top cover also prevents external moisture or dust and other contaminants from entering the housing. The battery pack 100 can serve as a rechargeable battery and a power source for new energy vehicles, primarily used for storing and providing electrical energy.

[0018] The electrical connection system of the battery pack 100 (high-voltage / low-voltage connectors, wiring harnesses, etc.) is the core component responsible for realizing energy and signal transmission between the battery 100 and external circuits. The high-voltage connector is a critical component of this system, primarily used for reliable transmission of high current, providing electrical connections between the battery pack 100 and high-voltage loads such as the vehicle's drive system and charging system. The low-voltage connector is mainly used for transmitting control signals and acquiring data, connecting the battery management system (BMS) to various sensors and monitoring modules, ensuring the system achieves safe monitoring and control.

[0019] The housing 20 may include a plurality of first containers 21, which are stacked along a first direction. The battery pack 100 may also include a plurality of battery groups. The plurality of battery groups are respectively housed in the plurality of first containers 21, and the plurality of battery groups can be electrically connected in series or parallel. Each battery group can be formed by connecting a plurality of batteries 10 with equivalent capacity and internal resistance. For example, the plurality of batteries 10 can all be connected in series to form a battery group, or the plurality of batteries 10 can all be connected in parallel to form a battery group, or a portion of the plurality of batteries 10 can be connected in series and another portion can be connected in parallel to form a battery group. For ease of description, Z is used to indicate the first direction in the accompanying drawings of this disclosure.

[0020] Combination Figure 3 The battery pack 100 may also include multiple first conductive bars 31. Each first conductive bar 31 can be electrically connected to the terminals of at least two batteries 10, i.e., the current output terminals of the batteries 10, to realize the series or parallel connection of multiple batteries 10. The multiple first conductive bars 31 are respectively electrically connected to multiple battery packs.

[0021] Battery 10 is the basic energy storage unit in battery pack 100, used to store and release electrical energy, and capable of converting chemical energy into electrical energy (discharging process) or storing electrical energy as chemical energy (charging process) through internal chemical reactions. In battery pack 100, multiple batteries 10 can be electrically connected in series or parallel to meet different voltage, capacity, and power requirements. In some embodiments, battery 10 is a prismatic battery. In other embodiments, battery 10 is a cylindrical battery. In other embodiments, battery 10 is a pouch battery. In other embodiments, battery 10 may also be other types of batteries. This disclosure does not limit its type.

[0022] The battery pack 100 may also include a first electrical connector 41. The first electrical connector 41 is electrically connected to a plurality of battery packs via a plurality of first conductive bars 31 and is used for electrical connection to an external power source and / or an external load.

[0023] According to the above structure, by connecting multiple first conductive busbars 31, each corresponding to a battery pack, to a first electrical connector 41, the entire battery pack 100 can be electrically connected to an external power source and / or external load through only the first electrical connector 41 to complete charging and discharging operations. This effectively reduces the number of electrical connectors, lowers manufacturing costs, avoids the risk of misoperation caused by multiple electrical connectors, and simplifies the connection structure and assembly process between the battery pack 100 and the external power source and / or external load. Simultaneously, it improves the overall compactness and ease of maintenance of the battery pack 100. Furthermore, by incorporating multiple battery packs, the battery pack 100 can have higher voltage and larger capacity, while also extending its power supply capability to meet higher energy demands, further enhancing the overall service life and reliability of the battery pack 100.

[0024] refer to Figure 1 and Figure 3 The housing 20 may also include a second container 22. A first electrical connector 41 is mounted on the second container 22, and a plurality of first conductive bars 31 extend into the second container 22 to connect with the first electrical connector 41.

[0025] A first electrical connector 41 is mounted on a second container 22, and is electrically connected to multiple battery packs disposed in multiple first containers 21 via multiple first conductive bars 31 extending into the second container 22. This allows the first electrical connector 41 to be spatially isolated from the multiple battery packs in the multiple first containers 21, which not only improves the safety and reliability of the electrical connection, but also simplifies the process of daily maintenance and external device connection. In addition, operators only need to operate within the area of ​​the second container 22 to complete the electrical connection of the battery pack 100 to an external power source and / or an external load, effectively avoiding interference with the multiple battery packs in the multiple first containers 21, and ensuring the reliability and stability of the battery pack 100.

[0026] Further, refer to Figure 1 and Figure 3 The second container 22 is located at the top of the plurality of first containers 21 in the first direction. It should be noted that, in order to describe the relative positional relationship between the components, the directional terms "top," "bottom," "above," and "below" are all based on the "first direction." It should be understood that "top" refers to the end pointing in the positive direction of the first direction. "Bottom" refers to the end pointing in the opposite direction of the first direction (i.e., the direction opposite to the positive direction).

[0027] Compared to placing the second container 22 at the bottom or side of the plurality of first containers 21, placing the second container 22 at the top of the plurality of first containers 21 in the first direction can effectively avoid external impacts or accidental bumps. It can also prevent corrosion of the first electrical connector 41 by potential water, dust, or leaked liquid at the bottom, thus improving the reliability of the electrical connection between the first electrical connector 41 and the external power supply and / or external load. Furthermore, placing the second container 22 at the top of the plurality of first containers 21 makes it easily accessible, allowing operators to directly and quickly connect and repair the first electrical connector 41 to the external power supply and / or external load, improving assembly and maintenance efficiency.

[0028] refer to Figure 1 and Figure 3 Each first container 21 is open at the top, meaning that each first container 21 may include a bottom wall and a side wall connected together, with the bottom wall located at the bottom of the side wall and enclosing a receiving space. The housing 20 also includes a top cover 23. The top cover 23 covers the topmost first container 21. A second container 22 is disposed on the top cover 23, and a portion of the top cover 23 forms the bottom wall of the second container 22.

[0029] Based on the above structure, the top cover 23 can, on the one hand, seal and cover the first container 21 below to ensure the stability of its internal battery pack, and on the other hand, provide a stable mounting base for the second container 22 above. This can effectively reduce the number of parts, lower manufacturing costs, improve assembly efficiency, and simplify the overall structure of the casing.

[0030] refer to Figure 4 The top cover 23 has an opening 231 that connects the interior of the second container 22 and the interior of the topmost first container 21. A plurality of first conductive bars 31 extend into the second container 22 through the opening 231.

[0031] According to the above structure, an opening 231 is provided in the top cover 23, allowing multiple first conductive bars 31 to extend directly from the inside of the topmost first container 21 into the second container 22. This ensures that all multiple first conductive bars 31 are located within the housing 20, effectively preventing problems such as electric shock and short circuits caused by exposed first conductive bars 31, thus improving the safety and reliability of the battery pack 100. Furthermore, there is no need to provide separate wiring channels and external protective structures for the multiple first conductive bars 31, which not only simplifies the assembly process and overall structure but also effectively reduces the number of parts and lowers manufacturing costs.

[0032] refer to Figure 1 and Figure 3 Each battery pack may include multiple batteries 10, which are stacked along a second direction. Multiple first containers 21 together form an electrical compartment on the same side of the stacking direction of the corresponding battery packs. Multiple first conductive bars 31 extend from the electrical compartment into a second container 22. For ease of description, Y is used to indicate the second direction in the accompanying drawings of this disclosure.

[0033] According to the above structure, by forming an electrical compartment on the same side of the stacking direction of the battery packs corresponding to the multiple first containers 21, the multiple first conductive bars 31 can extend from the electrical compartment into the second container 22 in a concentrated manner. This can effectively improve the regularity of the electrical connection path within the battery pack 100, avoid structural complexity caused by the dispersed arrangement of lines, reduce the operational complexity during assembly, and improve maintenance convenience. In addition, the extension of the multiple first conductive bars 31 from the electrical compartment into the second container 22 spatially isolates the paths of the multiple first conductive bars 31 to the second container 22 from the multiple battery packs. This can effectively prevent the multiple first conductive bars 31 from causing structural interference to the multiple battery packs during assembly or maintenance, such as squeezing or damage, thereby improving the overall reliability of the battery pack 100.

[0034] refer to Figure 1 and Figure 3Each battery pack may also include two rows of batteries arranged side by side. Each first container 21 includes a separator beam 24 located between the two rows of batteries, that is, the two rows of batteries are located on opposite sides of the separator beam 24 in a third direction. The separator beam 24 protrudes into the electrical compartment. A plurality of first conductive bars 31 are located on the same side of the separator beam 24. For ease of description, in the accompanying drawings of this disclosure, X is used to indicate a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0035] By providing a protruding partition beam 24 extending into the electrical compartment within each first container 21, and positioning multiple first conductive bars 31 on the same side of the partition beam 24, the multiple first conductive bars 31 can extend into the second container 22 in a regular and orderly manner, effectively avoiding the risk of electrical interference or short circuits caused by the cross-arrangement of multiple first conductive bars 31. Furthermore, the partition beam 24 between the two rows of batteries in each first container 21 enhances the structural strength of each first container 21, thereby enhancing the structural strength of the housing 20 and ensuring that the battery pack 100 can better protect the internal batteries and other components when subjected to external impacts or vibrations.

[0036] refer to Figure 2 The battery pack 100 also includes a plurality of second conductive bars 32. Each second conductive bar 32 is used to electrically connect two adjacent battery packs.

[0037] The two adjacent battery packs are directly electrically connected by using a second conductive busbar 32. This simplifies the internal electrical connection structure of the battery pack 100, effectively avoids the cumbersome use of multiple wiring harnesses, reduces connection impedance and energy loss, improves the stability of the electrical connection and the convenience of maintenance, and ensures the overall reliability of the battery pack 100.

[0038] refer to Figure 1 and Figure 3 Multiple second conductive bars 32 are located on the other side of the separator beam 24 in the third direction.

[0039] According to the above structure, multiple first conductive bars 31 and multiple second conductive bars 32 are respectively located on both sides of the partition beam 24, thereby spatially isolating the multiple first conductive bars 31 and multiple second conductive bars 32 from each other. This can effectively avoid mutual interference between the first conductive bars 31 and the second conductive bars 32, ensuring the reliability of the battery pack 100, and also effectively improving maintenance convenience.

[0040] In another embodiment, reference Figure 2 Each second conductive busbar 32 is equipped with a circuit breaker 50.

[0041] Circuit breaker 50 is a critical safety device in battery pack 100. Its main function is to disconnect the electrical connection between battery pack 100 and external loads when maintenance, repair, or emergency situations are required. By installing circuit breakers 50 on each second busbar 32, independent protection of the electrical connection between adjacent battery packs can be achieved. When an abnormal current occurs in a battery pack, its corresponding circuit breaker 50 can quickly disconnect the local circuit, effectively preventing the fault from spreading to the entire battery pack 100. This effectively improves the safety and reliability of battery pack 100 and facilitates fault location and maintenance replacement. The circuit breaker 50 can be manually operated to ensure that battery pack 100 is de-energized during installation, repair, or maintenance, ensuring the safety of operators. The circuit breaker 50 also has a built-in fuse that automatically blows in the event of an external short circuit or severe overcurrent in battery pack 100, permanently cutting off the fault current and preventing thermal runaway propagation, thereby protecting the internal batteries and high-voltage circuitry of battery pack 100. By incorporating a circuit breaker into the battery pack 100, operator safety can be ensured, and the overall reliability of the battery pack 100 can be improved.

[0042] In another embodiment, reference Figure 3 The battery pack 100 may also include a main controller and multiple sub-controllers 34. The multiple sub-controllers 34 are respectively disposed in multiple first containers 21 and are electrically connected to multiple battery packs. The multiple sub-controllers 34 are electrically connected to the main controller via multiple wiring harnesses 33.

[0043] Based on the above structure, by providing a sub-controller 34 electrically connected to the battery pack in each first container 21, independent monitoring and management of the status of each battery pack can be achieved. When an abnormality occurs in a battery pack, rapid response and fault isolation can be achieved, ensuring the normal operation of other battery packs and helping to improve the overall reliability of the battery pack 100 control. In addition, multiple sub-controllers 34 are electrically connected to the main controller through multiple wiring harnesses 33, ensuring that the communication between the multiple sub-controllers 34 and the main controller is independent, avoiding signal interference, and facilitating fault location and maintenance operations.

[0044] Further, refer to Figure 1 The battery pack 100 may also include a second electrical connector 42. The second electrical connector 42 is electrically connected to the main controller and is used for electrical connection to an external control system.

[0045] The second electrical connector 42 enables electrical connection between the main controller and the external control system. This simplifies the electrical connection path, allowing the external control system to communicate directly with the main controller via the second electrical connector 42. This facilitates real-time monitoring and control of the battery status by the external control system, ensuring the safety and efficient management of the battery pack.

[0046] refer to Figure 1 The housing 20 may also include a second container 22, in which the main controller is located.

[0047] By placing the main controller in the second container 22, it can be spatially isolated from the multiple sub-controllers 34 and multiple battery packs located in the first container 21. When performing maintenance on the main controller, operators only need to work within the second container 22, without opening the first container 21. This not only avoids interference with the multiple battery packs and individual sub-controllers 34, but also improves the convenience and safety of maintenance operations. Furthermore, it ensures that each component operates independently, effectively improving the overall safety, reliability, and maintenance convenience of the battery pack 100.

[0048] Combination Figure 1 and Figure 3 Each battery pack may include multiple batteries 10 stacked along a second direction. Multiple first containers 21 together form an electrical compartment on the same side of the stacking direction of the corresponding battery packs. Multiple sub-controllers 34 are disposed in the electrical compartment, and multiple wiring harnesses 33 extend from the electrical compartment to the second container 22.

[0049] According to the above structure, by forming an electrical compartment on the same side of the stacking direction of the multiple first containers 21 corresponding to the battery packs, multiple sub-controllers 34 are housed in the electrical compartment, and multiple wiring harnesses 33 extend from the electrical compartment to the second container 22. This effectively improves the regularity of the electrical connection path within the battery pack 100, avoids structural complexity caused by dispersed wiring, reduces operational complexity during assembly, and improves maintenance convenience. Furthermore, the extension of multiple wiring harnesses 33 from the electrical compartment to the second container 22 spatially isolates the paths of the multiple wiring harnesses 33 from the multiple battery packs. This effectively prevents the multiple wiring harnesses 33 from causing structural interference to the multiple battery packs during assembly or maintenance, such as compression or damage, thereby improving the overall reliability of the battery pack 100.

[0050] Continue to refer to Figure 1 and Figure 3 Each battery pack includes two rows of batteries arranged side by side. Each first container 21 includes a separator beam 24 located between the two rows of batteries, that is, the two rows of batteries are positioned on opposite sides of the separator beam 24 in a third-direction orientation. The separator beam 24 protrudes into the electrical compartment. Multiple wiring harnesses 33 are anchored to the multiple separator beams 24 and extend along the multiple separator beams 24 into the second container 22.

[0051] By providing protruding partition beams 24 extending into the electrical compartment within each first container 21, and anchoring multiple wire harnesses 33 to these partition beams 24 and extending them into the second container 22, the multiple wire harnesses 33 can extend into the second container 22 in a neat and orderly manner, effectively avoiding the risk of interference or short circuits caused by a disorderly arrangement of the multiple wire harnesses 33. The partition beams provide reliable anchoring and support for the multiple wire harnesses 33, effectively preventing displacement, wear, or loosening of connections due to vibration or impact, thereby ensuring the reliable stability of the connection of the multiple wire harnesses 33. In addition, the partition beams 24 between the two rows of batteries in each first container 21 can enhance the structural strength of each container, thereby enhancing the structural strength of the housing 20 and ensuring that the battery pack 100 can better protect the internal batteries and other components when subjected to external impact or vibration.

[0052] In another embodiment, reference Figure 1 A first electrical connector 41 and a second electrical connector 42 are mounted on a second container 22. A plurality of first conductive bars 31 extend into the second container 22 to connect to the first electrical connector 41, and a master controller is electrically connected to the second electrical connector 42. By way of example only, the first electrical connector 41 is a high-voltage connector, and the second electrical connector 42 is a low-voltage connector.

[0053] According to the above structure, by mounting the first electrical connector 41 and the second electrical connector 42 on the second container 22, the energy storage components (i.e., multiple battery packs) of the battery pack 100 are spatially isolated from the first electrical connector 41 and the second electrical connector 42. This makes the battery pack 100 compact in structure, effectively avoids the risk of interference between different components, and also effectively improves production assembly efficiency and maintenance convenience. Secondly, the multiple first conductive busbars 31 extend to the second container 22 and are electrically connected to the first electrical connector 41, which simplifies the internal wiring of the battery pack 100 and improves the reliability of the electrical connection. In addition, the direct electrical connection between the main controller and the second electrical connector 42 ensures efficient and stable signal transmission.

[0054] refer to Figure 1 The first electrical connector 41 and the second electrical connector 42 are mounted on the same side wall of the second container 22. In other embodiments, the first electrical connector 41 and the second electrical connector 42 are mounted on different side walls of the second container 22. This disclosure does not specifically limit the scope of the embodiments.

[0055] Installing the first electrical connector 41 and the second electrical connector 42 on the same side wall of the second container 22 can effectively improve the convenience of electrical connection between the battery pack 100 and the external power source and / or the external load, making the electrical connection lines between the battery pack 100 and the external power source and / or the external load neat and orderly, and simplifying the assembly process.

[0056] <Example Electrical Equipment> This disclosure also provides an electrical device 200, which may include the battery pack described above.

[0057] By way of example only, electrical equipment can be, but is not limited to, vehicles, ships, aircraft, household appliances, and industrial equipment. For example, vehicles can be passenger cars, trucks, forklifts, construction vehicles, etc.

[0058] In addition, the electrical equipment 200 can also be used for the storage, conversion and release of recyclable electrical energy.

[0059] In a non-restrictive example, refer to Figure 5 The electrical equipment 200 can be an electric vehicle 200, and the battery pack 100 can be used as a power source to power the electric vehicle.

[0060] It should be noted that the elements described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0061] It should be understood that multiple components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into multiple separate components and / or parts. The use of the public designation "a" or "an" to describe a component or part does not imply the exclusion of other components or parts.

[0062] It should be understood that although terms such as “first” or “second” may be used in this disclosure to describe various elements (such as a first electrical connector and a second electrical connector), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0063] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0064] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A battery pack, characterized in that, include: The container includes a plurality of first containers stacked together along a first direction; Multiple battery packs are respectively housed in the multiple first containers; Multiple first conductive busbars are electrically connected to the multiple battery packs, respectively; as well as The first electrical connector is electrically connected to the plurality of battery packs via the plurality of first conductive bars, and is used for electrical connection to an external power source and / or an external load.

2. The battery pack according to claim 1, characterized in that, The enclosure also includes a second container, on which the first electrical connector is mounted, and the plurality of first conductive bars extend into the second container to connect with the first electrical connector.

3. The battery pack according to claim 2, characterized in that, The second container is positioned on top of the plurality of first containers in the first direction.

4. The battery pack according to claim 3, characterized in that, Each first container is open on its top side, and the container also includes a top cover that covers the topmost first container, with the second container disposed on the top cover, a portion of which forms the bottom wall of the second container.

5. The battery pack according to claim 4, characterized in that, The portion of the top cover has an opening connecting the interior of the second container and the interior of the topmost first container, through which the plurality of first conductive bars extend into the second container.

6. The battery pack according to claim 3, characterized in that, Each battery pack includes a plurality of batteries stacked along a second direction, the plurality of first containers forming an electrical compartment on the same side of the stacking direction of the corresponding battery pack, and the plurality of first conductive bars extending from the electrical compartment into the second container.

7. The battery pack according to claim 6, characterized in that, Each battery pack includes two rows of batteries arranged side by side, and each first container includes a partition beam located between the two rows of batteries, the partition beam protruding into the electrical compartment, and the plurality of first conductive bars located on the same side of the partition beam.

8. The battery pack according to claim 7, characterized in that, It also includes multiple second conductive busbars, each of which is used to electrically connect two adjacent battery packs.

9. The battery pack according to claim 8, characterized in that, The plurality of second conductive bars are located on the other side of the partition beam.

10. The battery pack according to claim 8, characterized in that, Each second conductor bus is equipped with a circuit breaker.

11. The battery pack according to claim 1, characterized in that, It also includes a main controller and multiple sub-controllers, each of which is located in one of the multiple first containers and is electrically connected to one of the multiple battery packs. Each of the multiple sub-controllers is electrically connected to the main controller via multiple wiring harnesses.

12. The battery pack according to claim 11, characterized in that, It also includes a second electrical connector, which is electrically connected to the main controller and is used for electrical connection to an external control system.

13. The battery pack according to claim 12, characterized in that, The enclosure also includes a second container, in which the main controller is located.

14. The battery pack according to claim 13, characterized in that, Each battery pack includes a plurality of batteries stacked along a second direction, the plurality of first containers forming an electrical compartment on the same side of the stacking direction of the corresponding battery pack, the plurality of sub-controllers being disposed in the electrical compartment, and the plurality of wiring harnesses extending from the electrical compartment to the second container respectively.

15. The battery pack according to claim 14, characterized in that, Each battery pack includes two rows of batteries arranged side by side, and each first container includes a partition beam located between the two rows of batteries, the partition beam protruding into the electrical compartment, and the plurality of wiring harnesses anchored to the plurality of partition beams and extending along the plurality of partition beams into the second container.

16. The battery pack according to claim 13, characterized in that, The first electrical connector and the second electrical connector are mounted on the second container, the plurality of first conductive busbars extend into the second container to connect with the first electrical connector, and the master controller is electrically connected to the second electrical connector.

17. The battery pack according to claim 16, characterized in that, The first electrical connector and the second electrical connector are respectively mounted on two opposite side walls of the second container.

18. An electrical appliance, characterized in that, Includes the battery pack according to any one of claims 1 to 17.

Images