Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment, the battery device comprises a shell, a power battery assembly, a starting battery assembly and a battery management system, and the shell is provided with an accommodating cavity; the power battery assembly comprises a power battery arranged in the accommodating cavity; the starting battery assembly is arranged in the shell and provided with a starting battery cavity independent of the containing cavity and a starting battery arranged in the starting battery cavity. The battery management system is arranged in the shell and electrically connected with the power battery and the starting battery. Through the technical scheme, the battery device provided by the utility model can achieve the purpose that the battery management system monitors the battery in the transportation or storage process of the battery device, and has the advantages of high reliability, space saving and cost saving.

Description

Technical Field

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

[0002] In the related art, a battery management system for monitoring the power battery is usually provided in the battery pack. However, since the battery management system can only be powered by the starting battery after the entire vehicle is assembled, the power battery cannot be monitored by the battery management system during the transportation and storage of the battery pack, which has certain limitations. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery device and an electrical device, so that the battery management system can monitor the battery during the transportation or storage of the battery device, and has the advantages of high reliability, space saving and cost saving.

[0004] In order to achieve the above-mentioned objectives, a first aspect of the present disclosure provides a battery device, comprising: a shell having a accommodating cavity; a power battery assembly, comprising a power battery arranged in the accommodating cavity; a starting battery assembly, arranged in the shell and having a starting battery cavity independent of the accommodating cavity and a starting battery arranged in the starting battery cavity; and a battery management system, arranged in the shell and electrically connected to the power battery and the starting battery, respectively.

[0005] Optionally, the starting battery assembly includes a first shell, and the first shell encloses the starting battery cavity.

[0006] Optionally, the shell has a partition structure, and the accommodating cavity and the starting battery cavity are separated by the partition structure.

[0007] Optionally, the bottom surface of the starting battery assembly and the bottom surface of the power battery assembly are arranged in the same plane in the height direction, and / or the top surface of the starting battery assembly and the top surface of the power battery assembly are arranged in the same plane in the height direction.

[0008] Optionally, the starting battery assembly is stacked with the power battery assembly in the height direction.

[0009] Optionally, the battery device further includes a power distribution assembly module, the power distribution assembly module includes a second shell, the battery management system is arranged in the second shell, and the power battery is connected to the starting battery through the power distribution assembly module.

[0010] Optionally, the bottom surface of the second shell and at least one of the bottom surfaces of the power battery assembly and the bottom surfaces of the starting battery assembly are arranged in the same plane in the height direction, and / or the top surface of the second shell and at least one of the top surfaces of the power battery assembly and the top surfaces of the starting battery assembly are arranged in the same plane in the height direction.

[0011] Optionally, the bottom surface of the second outer shell, the bottom surface of the power battery assembly and the bottom surface of the starting battery assembly are arranged in the same plane in the height direction, and the second outer shell and the starting battery assembly are both located on the same side of the power battery assembly.

[0012] Optionally, the second housing is stacked with the power battery assembly in a direction perpendicular to the plane where the power battery assembly is located.

[0013] Optionally, the power battery and the starting battery are of the same type.

[0014] A second aspect of the present disclosure provides an electrical device, comprising the battery device as described above.

[0015] Through the above technical solution, that is, the battery device provided by the present disclosure, the battery device is provided with a power battery and a starting battery respectively electrically connected to the battery management system in the housing, so that the starting battery can realize the power supply to, for example, the battery management system, so that the battery management system can still monitor the starting battery and the power battery in the battery device even during the transportation or storage of the battery device, and the applicability is higher; in addition, the starting battery cavity of the starting battery is arranged independently of the accommodating cavity where the power battery is located, that is, the two sets of battery units are separated to achieve their respective functional requirements, and the reliability is higher, and by integrating the power battery and the starting battery in the battery device, the power battery and the starting battery can share a set of battery management system, the integration is high and the structure is more compact, and at the same time, there is no need to separately design the protective shell of the starting battery and the layout design of the position of the whole vehicle, so as to achieve the purpose of saving space and saving costs. Therefore, the battery device provided by the present disclosure can achieve the purpose of the battery management system monitoring the battery during the transportation or storage of the battery device, and has the advantages of high reliability, space saving and cost saving.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic structural diagram of a battery device provided in a first embodiment of the present disclosure;

[0019] Figure 2 is a schematic structural diagram of a battery device provided in the first embodiment of the present disclosure after the housing is removed;

[0020] Figure 3 is a schematic structural diagram of a battery device provided in the first embodiment of the present disclosure after removing the shell and the second shell;

[0021] Figure 4 is a schematic structural diagram of a battery device provided in a second embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of a battery device provided in a second embodiment of the present disclosure after the housing is removed;

[0023] Figure 6 1 is a schematic diagram of the structure of the battery device provided in the second embodiment of the present disclosure after the shell and the second shell are removed.

[0024] Description of Reference Numerals

[0025] 1-shell; 110-accommodating cavity; 2-power battery assembly; 210-power battery; 3-starting battery assembly; 310-starting battery cavity; 320-starting battery; 330-first shell; 4-battery management system; 5-power distribution assembly module; 510-second shell; 6-low-voltage power interface; 7-low-voltage signal interface; 8-high-voltage power interface. DETAILED DESCRIPTION

[0026] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0027] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0028] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the battery device in space when the battery device is in use. "Inside" and "outside" refer to the inside and outside relative to the outline of the component or structure itself. In addition, it should be noted that the terms used, such as "first" and "second", are used to distinguish one element from another and do not have order or importance. In addition, in the description of the reference drawings, the same mark in different drawings represents the same element.

[0029] In the related art, a battery management system for monitoring the power battery is usually provided in the battery pack. However, since the battery management system needs to be powered by the starting battery only after the whole vehicle is assembled, and since the starting battery is usually arranged outside the battery pack, for example, the starting battery is usually located in the trunk of the whole vehicle or under the main driver's seat or the co-driver's seat, it is usually necessary to power the battery management system in the battery pack only after the whole vehicle is assembled. As a result, the power battery cannot be monitored by the battery management system during transportation and storage of the battery pack, which has certain limitations. In addition, since the starting battery is usually arranged outside the battery pack, it is usually necessary to separately design the protective shell and the layout design of the position in the whole vehicle for the starting battery outside the battery pack, and it is also necessary to separately equip the starting battery with a battery management system to monitor the starting battery. The overall space occupancy is large and the cost is high.

[0030] Based on this, according to a first aspect of the present disclosure, a battery device is provided, referring to Figures 1 to 6 As shown, the battery device includes a shell 1, a power battery assembly 2, a starting battery assembly 3 and a battery management system 4, the shell 1 has a accommodating cavity 110; the power battery assembly 2 includes a power battery 210 arranged in the accommodating cavity 110; the starting battery assembly 3 is arranged in the shell 1 and has a starting battery cavity 310 independent of the accommodating cavity 110 and a starting battery 320 arranged in the starting battery cavity 310; the battery management system 4 is arranged in the shell 1 and is electrically connected to the power battery 210 and the starting battery 320 respectively.

[0031] Through the above technical solution, that is, the battery device provided by the present disclosure, the battery device is provided with a power battery 210 and a starting battery 320 respectively electrically connected to the battery management system 4 in the shell 1, so that the battery management system 4 can be powered by the starting battery 320, so that the battery management system 4 can still monitor the starting battery 320 and the power battery 210 in the battery device even during the transportation or storage of the battery device, and the applicability is higher; in addition, the starting battery cavity 310 of the starting battery 320 is arranged independently of the accommodating cavity 110 where the power battery 210 is located, that is, the two sets of battery units are separated independently to achieve their respective functional requirements, and the reliability is higher, and by integrating the power battery 210 and the starting battery 320 in the battery device, the power battery 210 and the starting battery 320 can share a set of battery management system 4, the integration is high and the structure is more compact, and at the same time, there is no need to separately design the starting battery 320, such as a protective shell and layout design in the position of the whole vehicle, so as to achieve the purpose of saving space and saving costs. Therefore, the battery device provided by the present disclosure can achieve the purpose of the battery management system monitoring the battery during the transportation or storage of the battery device, and at the same time has the advantages of high reliability, space saving and cost saving.

[0032] In some embodiments, reference Figures 1 to 6 As shown, the starting battery assembly 3 may include a first shell 330, which encloses a starting battery cavity 310 and has a simple structure and is easy to install and manufacture, so as to better separate the two sets of battery units, the starting battery 320 and the power battery 210, to achieve their respective functional requirements, and also facilitate subsequent maintenance and disassembly operations.

[0033] In addition, in some embodiments, the power battery 210 and the starting battery 320 may be of the same type, for example, the power battery 210 and the starting battery 320 may be made of, for example, lithium iron phosphate batteries. In this way, by making the power battery 210 and the starting battery 320 of the same material, the service life of the power battery 210 and the starting battery 320 is ensured to be the same, thereby improving the reliability of the battery device. Among them, the specific arrangement of the power battery 210 in the accommodating cavity 110 and the starting battery 320 in the starting battery cavity 310, the arrangement number of the battery cells of the power battery 210, and the arrangement number of the battery cells of the starting battery 320 are not specifically limited in this disclosure. Those skilled in the art can design them adaptively according to actual application requirements, and the purpose is to be able to achieve their respective power supply requirements. For example, the starting battery 320 can achieve the low-voltage power supply requirements for components such as the battery management system 4, the door and the instrument panel, and the power battery 210 can provide a power source for the entire vehicle.

[0034] In addition, in some embodiments, the housing 1 may have a partition structure, and the accommodating cavity 110 and the starting battery cavity 310 are separated by the partition structure, so as to separate the starting battery 320 and the power battery 210, which is beneficial to improve the reliability of the battery device and facilitate the subsequent maintenance and disassembly operations. Among them, the partition structure can be, for example, a partition beam (not shown) in the housing 1, or it can also be, for example, a first shell 330 that surrounds the starting battery cavity 310. The present disclosure does not specifically limit such deformation methods, and those skilled in the art can design adaptively according to actual application requirements.

[0035] In some embodiments, reference Figures 1 to 3 As shown, the starting battery assembly 3 and the power battery assembly 2 can be arranged in the same plane, for example, Figure 2 As shown, the bottom surface of the starting battery assembly 3 (which can be understood as Figure 2 The lower end surface of the starting battery assembly 3 in the height direction shown in the figure can be aligned with the bottom surface of the power battery assembly 2 (which can be understood as Figure 2 The lower end surface of the power battery assembly 2 along the height direction shown is arranged in the same plane in the height direction. In this way, the relevant structure of the starting battery assembly 3 can be directly arranged on the bottom surface of the bottom plate (not shown) of the shell 1 for installing the power battery 210, for example. It has a high degree of integration and a more compact structure, which is conducive to saving space and reducing manufacturing costs.

[0036] Of course, the starting battery assembly 3 and the power battery assembly 2 can be arranged in the same plane, or they can be arranged in the same plane. Figure 2 As shown, the top surface of the starting battery assembly 3 (which can be understood as Figure 2 The upper end surface of the starting battery assembly 3 in the height direction shown in the figure can be aligned with the top surface of the power battery assembly 2 (which can be understood as Figure 2 The upper end surface of the power battery assembly 2 along the height direction shown in the figure is arranged in the same plane in the height direction. Of course, it is not limited to this. For example, in other embodiments, the bottom surface of the starting battery assembly 3 can be arranged in the same plane with the bottom surface of the power battery assembly 2 in the height direction, and the top surface of the starting battery assembly 3 can be arranged in the same plane with the top surface of the power battery assembly 2 in the height direction. The present disclosure does not specifically limit this type of deformation, and those skilled in the art can adaptively design it according to actual application requirements.

[0037] In addition, it should be noted that the above-mentioned same plane can be interpreted from the direction of the power battery 210 as follows: when multiple cells of the power battery 210 are stacked along their thickness direction, the length direction of the cells of the power battery 210 and the thickness direction of the cells determine the plane where the power battery assembly 2 is located. In this way, the starter battery assembly 3 and the power battery assembly 2 are arranged in the same plane, which is conducive to saving space and reducing manufacturing costs. Figure 2 and Figure 5 The length direction and thickness direction of the battery cell are shown in the figure as examples. From the perspective of the matching direction between the power battery 210 and the bottom plate of the housing 1, it can be understood that the plane where the power battery assembly 2 is located can be parallel to the bottom surface of the bottom plate of the housing 1. For example, the bottom plate of the housing 1 can have a plane parallel to Figure 2 The bottom surface of the plane where the length direction and the thickness direction are located, in this way, by arranging the starting battery assembly 3 and the power battery assembly 2 on the bottom surface of the bottom plate of the shell 1, it is possible to arrange the starting battery assembly 3 and the power battery assembly 2 in the same plane.

[0038] Of course, the above-mentioned specific embodiment in which the starting battery assembly 3 and the power battery assembly 2 are arranged in the same plane is exemplary. In other embodiments, refer to Figures 4 to 6 As shown, the starting battery assembly 3 can also be stacked with the power battery assembly 2 in the height direction (which can also be understood as a direction perpendicular to the plane where the power battery assembly 2 is located). For example, Figure 5 As shown, the starting battery assembly 3 can be arranged parallel to the power battery assembly 2. Figure 5 The upper end surface or lower end surface of the plane where the length direction and the thickness direction are located, wherein it should be noted that the technical personnel in this field can adaptively design whether it is arranged on the upper end surface or the lower end surface according to the actual application requirements of the battery device, and the present disclosure does not make specific limitations on this.

[0039] In addition, it should be noted that the specific arrangement of the above-mentioned starting battery assembly 3 and the power battery assembly 2 is not limited to Figures 1 to 6 In the specific embodiment shown, those skilled in the art can adaptively adjust the arrangement position of the starting battery assembly 3 relative to the power battery assembly 2 according to actual application requirements, with the purpose of integrating the starting battery assembly 3 and the power battery assembly 2 into the housing 1 of the battery device at the same time. The present disclosure is not limited thereto.

[0040] In some embodiments, reference Figures 1 to 6As shown, the battery device may further include a power distribution assembly module 5, the power distribution assembly module 5 includes a second shell 510, the battery management system 4 is arranged in the second shell 510, and the power battery 210 is connected to the starting battery 320 through the power distribution assembly module 5. In this way, when the power of the starting battery 320 is low, the power battery 210 can charge the starting battery 320 through the power distribution assembly module 5, thereby ensuring that the starting battery 320 can stably provide low-voltage power to components such as the battery management system 4, vehicle doors and dashboards, with higher reliability.

[0041] It should be noted that those skilled in the art can adaptively design the specific structure of the battery management system 4 and the power distribution assembly module 5 according to actual application requirements, with the aim of enabling performance monitoring of the starting battery 320, such as battery charge, to be achieved through the battery management system 4, and enabling control of, for example, a controllable switch (not shown in the figure) in the power distribution assembly module 5 to be opened and closed when, for example, the battery charge of the starting battery 320 is low, thereby enabling the power battery 210 to charge the starting battery 320 through the power distribution assembly module 5.

[0042] Exemplarily, the battery management system 4 needs to design a first wiring harness to achieve electrical connection with the power battery 210 and the starting battery 320 respectively, so that the battery information (such as power, voltage, resistance, temperature and other performance parameters) of the starting battery 320 and the power battery 210 can be monitored through the battery management system 4. In addition, the battery management system 4 may include, for example, a circuit board structure arranged in the second housing 510, and the power battery 210 and the starting battery 320 can share a set of battery management system 4 for battery monitoring, so as to save the use area of ​​part of the circuit board structure and reduce the external interface on the circuit board structure, etc., that is, it can be understood that compared with the related art, the present disclosure simplifies the related circuits, for example, it can omit the related circuits of the related art that separately equip the starting battery with a set of battery management system, which can not only save space but also reduce design costs.

[0043] In addition, those skilled in the art can select any known distribution box structure in the art for the above-mentioned power distribution assembly module 5. For example, a plurality of controllable switches (contactors, relays, and electronic switches, etc.), active fuses, passive fuses, pre-charge resistors, and DCDC converters, etc. can be provided in the distribution box structure. The present disclosure does not elaborate on this. The purpose is to enable the power battery 210 to charge the starting battery 320 through the power distribution assembly module 5 when the battery power of the starting battery 320 is low.

[0044] In addition, the specific embodiment in which the battery management system 4 is arranged in the second shell 510 is exemplary. In other embodiments, the battery management system 4 may also be provided with a third shell separately, and the third shell is arranged in the shell 1, or the battery management system 4 may also be arranged in the starting battery cavity 310. The present disclosure does not specifically limit such deformation methods, and those skilled in the art can design adaptively according to actual application requirements.

[0045] In some embodiments, reference Figures 1 to 6 As shown, the battery device may further include a low-voltage power interface 6 disposed on the housing 1, and the low-voltage power interface 6 is electrically connected to the starting battery assembly 3 through, for example, a second wiring harness, so that the starting battery 320 can provide low-voltage power to components disposed outside the housing 1, such as vehicle doors and instrument panels.

[0046] In addition, in some embodiments, reference Figures 1 to 6 As shown, the battery device may further include a low-voltage signal interface 7 disposed on the housing 1, and the low-voltage signal interface 7 is electrically connected to the battery management system 4 through, for example, a third wiring harness, so that the battery management system 4 and a controller or automotive electronic control unit (ECU) outside the housing 1 can transmit signals through the low-voltage signal interface 7 in a wired connection manner such as a CAN (Controller Area Network) bus.

[0047] In addition, in some embodiments, reference Figures 1 to 6 As shown, the battery device may further include a high-voltage power interface 8 disposed on the housing 1, and the high-voltage power interface 8 is electrically connected to the power distribution assembly module 5 through a fourth wiring harness, so that the power battery assembly 2 can supply power to various electrical components through the power distribution assembly module 5 and provide a power source for the entire vehicle.

[0048] It should be noted that the battery management system 4 can also be designed to realize the on-off control of the circuit between the positive electrode of the starting battery assembly 3 and the positive electrode of the low-voltage power interface 6 according to actual application requirements, and can control the direction of the current allowed to flow. In addition, the battery management system 4 can also be constructed to have a timing function and support a timed wake-up working mode, that is, it can be understood that the battery management system 4 can be set to a working time period so as to regularly realize battery monitoring of the starting battery 320 and the power battery 210 according to the preset working time period. The present disclosure is not limited to this, and those skilled in the art can adaptively design the specific structure of the battery management system 4 according to actual application requirements.

[0049] In some embodiments, reference Figures 1 to 6 As shown, the second housing 510 can be arranged in the same plane as the power battery assembly 2 and / or the starting battery assembly 3, for example, Figure 2As shown, the bottom surface of the second housing 510 (which can be understood as Figure 2 The lower end surface of the second shell 510 shown in the height direction can be arranged in the same plane with the bottom surface of the power battery assembly 2 and at least one of the bottom surfaces of the starting battery assembly 3 in the height direction, which is beneficial to saving space and reducing manufacturing costs.

[0050] Of course, the second housing 510 may be arranged in the same plane as the power battery assembly 2 and / or the starting battery assembly 3, or may be arranged in the same plane as the power battery assembly 2 and / or the starting battery assembly 3. Figure 2 As shown, the top surface of the second housing 510 (which can be understood as Figure 2 The upper end surface of the second shell 510 shown in the height direction can be arranged in the same plane with the top surface of the power battery assembly 2 and the top surface of the starting battery assembly 3 in the height direction. Of course, it is not limited to this. For example, in other embodiments, the bottom surface of the second shell 510 can be arranged in the same plane with at least one of the bottom surface of the power battery assembly 2 and the bottom surface of the starting battery assembly 3 in the height direction, and the top surface of the second shell 510 can be arranged in the same plane with at least one of the top surface of the power battery assembly 2 and the top surface of the starting battery assembly 3 in the height direction. The present disclosure does not specifically limit this type of deformation, and those skilled in the art can adaptively design it according to actual application requirements.

[0051] For example, Figures 2 to 3 As shown, the second housing 510, the power battery assembly 2 and the starting battery assembly 3 can be arranged in the same plane. For example, the bottom surface of the second housing 510, the bottom surface of the power battery assembly 2 and the bottom surface of the starting battery assembly 3 are arranged in the same plane in the height direction, and the second housing 510 and the starting battery assembly 3 are both located on the same side of the power battery assembly 2. The structure is more compact, which is conducive to saving space and is also convenient for wiring arrangement between each other, which is convenient for on-site installation operations. The present disclosure is not limited to this.

[0052] Of course, the specific embodiment in which the second housing 510, the power battery assembly 2 and the starting battery assembly 3 can be arranged in the same plane is exemplary. In other embodiments not shown in the figure, the second housing 510 can also be stacked with the power battery assembly 2 in a direction perpendicular to the plane where the power battery assembly 2 is located. For example, the second housing 510 can be arranged in the same plane as the starting battery assembly 3, and then the second housing 510 and the starting battery assembly 3 are arranged together in parallel with the power battery assembly 2. Figure 5 The upper end surface or the lower end surface of the plane where the length direction and the thickness direction are located, or the second housing 510 can also be arranged on the power battery assembly 2 parallel to Figure 5The upper end surface of the plane where the length direction and the thickness direction are located, and the starting battery assembly 3 is arranged parallel to the power battery assembly 2 Figure 5 The lower end surface of the plane where the length direction and the thickness direction are located is not specifically limited in the present disclosure, and those skilled in the art can adaptively design it according to the actual application requirements of the battery device.

[0053] In addition, it should be noted that the present disclosure does not specifically limit the specific appearance structure and structural dimensions of the above-mentioned shell 1, the first shell 330 and the second shell 510, and those skilled in the art can adaptively design them according to actual application requirements.

[0054] According to a second aspect of the present disclosure, there is provided an electrical device, comprising the above-mentioned battery device. The electrical device has all the beneficial effects of the above-mentioned battery device, which will not be described in detail in the present disclosure.

[0055] It should be noted that the above-mentioned electrical equipment can be a vehicle, wherein the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Of course, in other embodiments, the above-mentioned electrical equipment can also be a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy and an electric tool, etc., wherein the spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc.; the electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric airplane toy, etc.; the electric tool can include a metal cutting electric tool, a grinding electric tool, an assembly electric tool and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer, etc. The present disclosure is not limited to this.

[0056] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0058] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery device, characterized in that: include: A housing having a receiving cavity; A power battery assembly, comprising a power battery arranged in the accommodation cavity; A starting battery assembly, disposed in the housing and having a starting battery cavity independent of the accommodating cavity and a starting battery disposed in the starting battery cavity; as well as A battery management system is arranged in the housing and is electrically connected to the power battery and the starting battery respectively.

2. The battery device according to claim 1, characterized in that: The starting battery assembly includes a first housing, which encloses the starting battery cavity.

3. The battery device according to claim 1, characterized in that: The shell has a partition structure, and the accommodating cavity and the starting battery cavity are separated by the partition structure.

4. The battery device according to claim 1, characterized in that: The bottom surface of the starting battery assembly and the bottom surface of the power battery assembly are arranged in the same plane in the height direction, and / or the top surface of the starting battery assembly and the top surface of the power battery assembly are arranged in the same plane in the height direction.

5. The battery device according to claim 1, characterized in that: The starting battery assembly is stacked with the power battery assembly in a height direction.

6. The battery device according to claim 1, characterized in that: The battery device further includes a power distribution assembly module, the power distribution assembly module includes a second housing, the battery management system is arranged in the second housing, and the power battery is connected to the starting battery through the power distribution assembly module.

7. The battery device according to claim 6, characterized in that: The bottom surface of the second shell and at least one of the bottom surfaces of the power battery assembly and the bottom surfaces of the starting battery assembly are arranged in the same plane in the height direction, and / or the top surface of the second shell and at least one of the top surfaces of the power battery assembly and the top surfaces of the starting battery assembly are arranged in the same plane in the height direction.

8. The battery device according to claim 6, characterized in that: The bottom surface of the second housing, the bottom surface of the power battery assembly and the bottom surface of the starting battery assembly are arranged in the same plane in the height direction, and the second housing and the starting battery assembly are both located on the same side of the power battery assembly.

9. The battery device according to claim 6, characterized in that: The second housing is stacked with the power battery assembly in a direction perpendicular to the plane where the power battery assembly is located.

10. The battery device according to claim 1, characterized in that: The power battery and the starting battery are of the same type.

11. An electrical device, characterized in that: A battery device comprising any one of claims 1-10.

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