Battery device, electric box and electric device

Abstract

The utility model discloses a battery device, electrical box and electricity utilization device relates to battery technical field, wherein the battery device includes electrical box and battery monomer, electrical box and battery monomer are electrically connected, electrical box includes mounting shell, battery management module, distribution module and first electrical connection subassembly, mounting shell includes insulating cover body and main shell body, the main shell body includes the insulating cover body and main shell body. The insulating cover body covers the main shell to form an accommodating space; the power distribution module is arranged in an accommodating space on the inner side of the insulating cover body; the battery management module is arranged on the outer side of the insulating cover body; a part of the structure of the first electric connection assembly is embedded in the insulation cover body, and a part of the structure of the first electric connection assembly protrudes out of the inner side and the outer side of the insulation cover body, so that the first electric connection assembly is connected with the power distribution module and the battery management module. According to the technical scheme, the problem that the battery management module and the power distribution module in the battery device occupy large space can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field, especially a battery device, an electrical box and an electric device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry, and electric vehicles become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, the battery device as a core component is an important factor related to its development.

[0003] At present, the battery management module and the power distribution module in the battery device are relatively large in size, and the two need to be connected by a wire harness, which occupies a large space. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a battery device, an electrical box and an electric device, which aims to solve the problem of large space occupation of the battery management module and the power distribution module in the battery device.

[0005] To achieve the above purpose, the battery device provided by the utility model comprises an electrical box and a battery monomer, the electrical box is electrically connected with the battery monomer, and the electrical box comprises:

[0006] A mounting shell, the mounting shell comprises an insulating cover body and a main shell body, and the insulating cover body covers the main shell body to form an accommodation space;

[0007] A power distribution module, the power distribution module is arranged in the accommodation space on the inner side of the insulating cover body;

[0008] A battery management module, the battery management module is arranged on the outer side of the insulating cover body; and

[0009] A first electric connection assembly, part of the structure of the first electric connection assembly is embedded in the insulating cover body, and part of the structure of the first electric connection assembly protrudes from the inner side and the outer side of the insulating cover body respectively, so that the first electric connection assembly connects the power distribution module and the battery management module.

[0010] In the technical scheme of the application, the battery management module and the power distribution module in the battery device are arranged on the mounting shell, and the battery management module and the power distribution module are electrically connected through the first electric connection assembly embedded in the insulating cover body. This arrangement integrates the battery management module and the power distribution module into the electrical box, which is convenient to disassemble and assemble, and the battery management module and the power distribution module do not need to be connected by a wire harness. The overall structure of the electrical box is compact, the overall volume of the integrated electrical box is relatively small, the electrical box occupies a small space in the battery device, and the small space occupation in the battery device is conducive to increasing the battery capacity of the battery device.

[0011] In an embodiment, the battery management module comprises a circuit board, the circuit board comprises a master control area and a slave control area, the master control area is electrically connected to the slave control area through an internal circuit of the circuit board, a plurality of battery cells are connected to the same sampling assembly, and the sampling assembly is connected to the slave control area.

[0012] In this way, the master control circuit and the slave control circuit of the battery management module are integrated on the circuit board, the battery management module is integrated, the number of components of the battery management module is reduced, the connection harness between the master control unit and the slave control unit of the battery management module is saved, the overall structure is compact, the volume of the battery management module and the electrical box is reduced, and the battery management module is convenient to disassemble and assemble. In addition, the plurality of battery cells are electrically connected to the slave control circuit of the slave control area through the sampling assembly, so that the voltage signal and the temperature signal of the battery cell can be transmitted to the battery management module, the voltage signal and the temperature signal of the battery cell are effectively transmitted and collected, and the battery cell is managed in terms of heat and / or safety.

[0013] In an embodiment, the circuit board comprises a first connector, the sampling assembly comprises a board body and a second connector, the board body is provided with a sampling circuit, the sampling circuit connects the battery cell and the second connector, and the first connector is plug-connected with the second connector.

[0014] In this way, the battery management module and the sampling assembly can be connected and separated by plugging and unplugging the first connector and the second connector, which is convenient to disassemble and assemble. In addition, the adapter harness between the sampling assembly and the battery management module can be saved, the wiring space is saved, and the space utilization of the battery device is improved.

[0015] In an embodiment, the circuit board comprises a first welding portion, the sampling assembly comprises a board body and a second welding portion arranged on the board body, the board body is provided with a sampling circuit, the sampling circuit connects the battery cell and the second welding portion, and the first welding portion is welded with the second welding portion to connect the circuit board and the sampling assembly.

[0016] In this way, the connection strength between the sampling assembly and the battery management module is high, the stable electrical connection relationship between the sampling assembly and the battery management module is maintained, and the performance is stable.

[0017] In an embodiment, the electrical box further comprises a low-voltage connector, and the low-voltage connector is directly connected to the battery management module.

[0018] In this way, the low-voltage connector and the battery management module are not connected through a wire harness, the connection stability between the low-voltage connector and the battery management module is improved, the risk of abnormal low-voltage control function caused by easy wear and damage of the wire harness is reduced, the space occupied by the wire harness is reduced, the structure is compact, the space utilization is improved, and the size of the electrical box can be reduced.

[0019] In an embodiment, the low-voltage connector comprises a connection terminal, the battery management module comprises a master control unit, the master control unit is provided with a socket, and the connection terminal is inserted into the socket to be connected with the master control unit.

[0020] In this way, the connection between the low-voltage connector and the battery management module is more convenient.

[0021] In an embodiment, the low-voltage connector is welded to the master control unit, and / or a support rod is connected between the low-voltage connector and the battery management module.

[0022] In this way, the connection between the low-voltage connector and the battery management module is more stable, and the performance stability of the low-voltage control function is ensured.

[0023] In an embodiment, the mounting shell further comprises a second electrical connection assembly, part of the structure of the second electrical connection assembly is embedded in the main shell, and at least part of the electrical devices of the power distribution module are electrically connected through the second electrical connection assembly.

[0024] In this way, the electrical devices in the power distribution module do not need to be connected through a wire harness, which is conducive to reducing the size of the electrical box and facilitating the electrical connection between the electrical devices in the power distribution module. Moreover, the second electrical connection assembly is embedded in the main shell, and the main shell is integrally arranged, which reduces the assembly steps of the mounting shell and improves the stability of the overall structure.

[0025] In an embodiment, the electrical devices of the power distribution module comprise a main positive relay, a main negative relay, and a high-voltage connector, the main positive relay, the high-voltage connector, and the main negative relay are connected in series through the second electrical connection assembly.

[0026] The main positive relay and the main negative relay are electrically connected to the battery management module through the first electrical connection assembly.

[0027] In this way, the relay control wire harness between the battery management module and the power distribution module is saved, the wiring space is saved, the space utilization of the battery device is improved, and the risk of unstable relay control function caused by easy wear and damage of the wire harness is reduced.

[0028] In an embodiment, the second electric connection assembly comprises a first conductive piece and a second conductive piece, and the first electric connection assembly further comprises a first connecting tab and a second connecting tab.

[0029] The main positive relay and the high-voltage connector are electrically connected through the first conductive piece, and two ends of the first connecting tab are respectively connected with the first conductive piece and the battery management module.

[0030] The main negative relay and the high-voltage connector are electrically connected through the second conductive piece, and two ends of the second connecting tab are respectively connected with the second conductive piece and the battery management module.

[0031] In this arrangement, the first electric connection assembly can sample and monitor the high-voltage at different positions in the power distribution module, and the voltage information of the high-voltage circuit controlled by the main positive relay and the main negative relay can be monitored, so that corresponding control and protection operations can be performed as needed to ensure the normal operation of the electrical box and the battery device, and the service performance and service life of the electrical box and the battery device can be ensured.

[0032] In an embodiment, the power distribution module further comprises a fuse, the second electric connection assembly further comprises a third conductive piece, the fuse is electrically connected with the positive voltage end of the main positive relay through the third conductive piece, and the first electric connection assembly further comprises a third connecting tab, two ends of the third connecting tab are respectively connected with the third conductive piece and the battery management module.

[0033] In this arrangement, the fuse is arranged in the power distribution module to prevent overcurrent and short circuit from damaging the battery and the device, and the third connecting tab is used to sample the input voltage of the fuse to achieve better safety management.

[0034] In an embodiment, the power distribution module further comprises a pre-charge circuit unit connected in parallel with the main positive relay, the pre-charge circuit unit comprises a pre-charge relay and a pre-charge resistor connected in series through a third electric connection assembly, a positive voltage end of the pre-charge circuit unit is connected with the third connecting tab, and a negative voltage end of the pre-charge circuit unit is connected with the first connecting tab.

[0035] In this arrangement, the power distribution module integrates the pre-charge function to optimize the performance of the electrical box, the pre-charge circuit unit can be directly connected to the third connecting tab and the first connecting tab to build an electrical connection and sample signals of the pre-charge circuit unit, the pre-charge relay and the pre-charge resistor do not need to be connected by a wire harness, which simplifies the electrical connection structure of the power distribution module, improves the connection convenience and stability, and is also conducive to the integration and miniaturization of the power distribution module and the electrical box.

[0036] In an embodiment, the first connecting lug is provided with a first branch lug connected with the negative pressure end of the pre-charging circuit unit.

[0037] And / or, the third connecting lug is provided with a second branch lug connected with the positive pressure end of the pre-charging circuit unit.

[0038] In this way, the connection area of the third connecting lug and the first connecting lug can be increased, and the second branch lug and the first branch lug can be extended to a position facilitating the connection of the pre-charging circuit unit according to the position of the electrical device in the power distribution module, thereby improving the connection convenience and design flexibility.

[0039] In an embodiment, part of the structure of the third electric connection assembly is embedded in the insulating cover.

[0040] In this way, the third electric connection assembly is embedded in the insulating cover, without the need for additional fixation of the third electric connection assembly, and the overall structure is stable and compact, ensuring stable connection of the pre-charging relay and the pre-charging resistor, which is conducive to the integration and miniaturization of the electrical box.

[0041] In an embodiment, the power distribution module includes a fast-charging circuit unit, the fast-charging circuit unit includes a fast-charging connector and a fast-charging relay connected in series through a fourth conductive piece, and part of the structure of the fourth conductive piece is embedded in the main shell.

[0042] The first electric connection assembly further includes a fourth connecting lug, and the two ends of the fourth connecting lug are respectively connected with the fourth conductive piece and the battery management module.

[0043] In this way, the fast-charging connector can be selected according to the needs to charge the battery monomer, thereby enriching the functions of the electrical box; and the fast-charging circuit unit is sampled through the fourth connecting lug, thereby ensuring the stability of the fast-charging function.

[0044] In an embodiment, the first electric connection assembly is directly welded with the battery management module; in this way, the connection strength between the first electric connection assembly and the battery management module is high, so that the first electric connection assembly and the battery management module have a stable electric connection relationship, thereby ensuring the stable performance of the electrical box.

[0045] In an embodiment, the first electric connection assembly is integrally injection molded with the insulating cover; in this way, the integrated arrangement between the first electric connection assembly and the insulating cover is facilitated, and the structural stability is high.

[0046] In an embodiment, the first electric connection assembly is electrically connected with the power distribution module through a fastener.

[0047] In this way, the first electric connection assembly is convenient to connect and disassemble with the power distribution module, and has good connection strength and stability, thereby ensuring stable performance of the electric box.

[0048] In an embodiment, the mounting shell further comprises an upper cover, the upper cover covers one side of the insulating cover body away from the main shell body, and the battery management module is arranged between the upper cover and the insulating cover body.

[0049] In this way, the upper cover and the insulating cover body can better protect the battery management module, thereby reducing the damage risk of the battery management module.

[0050] In an embodiment, the battery device further comprises a lower shell, the lower shell has a mounting space, and a first side wall of the lower shell is provided with a avoiding opening; the battery monomer and the electric box are arranged in the mounting space, the mounting shell is provided with a locking structure, the locking structure is locked to the side wall of the lower shell, and at least part of structure of at least one of the low-voltage connector, the high-voltage connector or other connector of the electric box passes out from the side of the first side wall away from the mounting space to the side of the first side wall facing the mounting space through the avoiding opening.

[0051] In this way, the low-voltage connector, the high-voltage connector, the fast-charging connector and other connectors are convenient to connect with external devices, thereby improving the use convenience.

[0052] In an embodiment, the mounting shell is provided with a locking structure, and the locking structure is locked to the first side wall.

[0053] In this way, when the locking structure is fixed, the locking force is directed to the side of the electric box, so that the electric box is not subjected to pressure towards the bottom wall of the accommodating space, thereby preventing the connectors from being deviated and ensuring the position degree of the connectors, avoiding poor electrical connection caused by deviation of the connectors, increasing the reliability of the connectors, reducing problems such as incomplete installation and ensuring stable performance.

[0054] The utility model discloses still propose a kind of electric box, comprising:

[0055] Mounting shell, the mounting shell includes insulating cover body and main shell body, and the insulating cover body covers the main shell body to form accommodating space;

[0056] Power distribution module, the power distribution module is arranged in the accommodating space on the inner side of the insulating cover body;

[0057] Battery management module, the battery management module is arranged on the outer side of the insulating cover body;And

[0058] The first electric connection assembly has part of its structure embedded in the insulating cover, and has part of its structure protruding from the inner side and the outer side of the insulating cover, so as to connect the power distribution module and the battery management module.

[0059] In this way, the battery management module and the power distribution module are integrated into the electrical box, which is convenient to disassemble and assemble, and the battery management module and the power distribution module do not need to be connected by a wire harness, the overall structure of the electrical box is compact, the overall volume of the integrated electrical box is relatively small, the space occupied by the electrical box in the battery device is small, and the battery capacity of the battery device can be increased.

[0060] In an embodiment, the battery management module includes a circuit board, the circuit board includes a master control area and a slave control area, the master control area is electrically connected to the slave control area through the built-in circuit of the circuit board, and a plurality of battery cells are connected to the same sampling assembly, and the sampling assembly is connected to the slave control area.

[0061] In this way, the master control circuit and the slave control circuit of the battery management module are integrated on the circuit board, the battery management module is integrated, the number of components of the battery management module is reduced, the connection wire harness between the master control unit and the slave control unit of the battery management module is saved, the overall structure is compact, the volume of the battery management module and the electrical box can be reduced, and the battery management module is convenient to disassemble and assemble. In addition, a plurality of battery cells are electrically connected to the slave control circuit of the slave control area through the sampling assembly, so that the voltage signal and the temperature signal of the battery cell can be transmitted to the battery management module, the voltage signal and the temperature signal of the battery cell are effectively transmitted and collected, and the battery management module can perform thermal management and / or safety management on the battery cell.

[0062] In an embodiment, the circuit board includes a first connector, the sampling assembly includes a board body and a second connector, the board body is provided with a sampling circuit, the sampling circuit connects the battery cell and the second connector, and the first connector and the second connector are plug-connected.

[0063] In this way, the battery management module and the sampling assembly can be connected and separated by plugging and unplugging the first connector and the second connector, which is convenient to disassemble and assemble. In addition, the adapter wire harness between the sampling assembly and the battery management module can be saved, the wiring space is saved, and the space utilization of the battery device can be improved.

[0064] In an embodiment, the circuit board comprises a first welding portion, the sampling assembly comprises a board body and a second welding portion arranged on the board body, the board body is provided with a sampling circuit, the sampling circuit connects the battery monomer and the second welding portion, and the first welding portion and the second welding portion are welded to connect the circuit board and the sampling assembly.

[0065] In this way, the connection strength between the sampling assembly and the battery management module is high, the stable electrical connection relationship between the sampling assembly and the battery management module is maintained, and the performance stability is ensured.

[0066] In an embodiment, the electrical box further comprises a low-voltage connector, and the low-voltage connector is directly connected to the battery management module.

[0067] In this way, the low-voltage connector and the battery management module are no longer connected by a wire harness, the connection stability between the low-voltage connector and the battery management module is improved, the risk of abnormal low-voltage control function caused by easy wear and damage of the wire harness is reduced, the occupied space required when arranging the wire harness is reduced, the structure arrangement is compact, the space utilization is improved, and the volume of the electrical box can be reduced.

[0068] In an embodiment, the mounting shell further comprises a second electrical connection assembly, part of the structure of the second electrical connection assembly is embedded in the main shell, and at least part of electrical devices of the power distribution module are electrically connected through the second electrical connection assembly.

[0069] In this way, the wire harness is not arranged between the electrical devices in the power distribution module, which is conducive to reducing the volume of the electrical box and facilitating the electrical connection between the electrical devices in the power distribution module. Furthermore, the second electrical connection assembly is embedded in the main shell, and the main shell is integrally arranged, so that the assembly steps of the mounting shell are reduced, and the overall structure is stable.

[0070] The utility model also provides a kind of electric device, and the electric device includes the battery device provided by any one of the preceding embodiments, and the battery device is used to provide electric energy.

[0071] By using the battery device provided by the preceding embodiment in the electric device, the battery capacity of the battery device in the electric device is increased, and the use performance of the electric device is improved.

[0072] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0073] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0074] Figure 1 Structure diagram of a vehicle for some embodiments of the present application;

[0075] Figure 2 Structure diagram of a battery device for some embodiments of the present application;

[0076] Figure 3 Structure diagram of an electrical box in the battery device for some embodiments of the present application;

[0077] Figure 4 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 3 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0078] Figure 5 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 3 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0079] Figure 6 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 3 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0080] Figure 7 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 6 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0081] Figure 8 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 7 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0082] Figure 9 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 3 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0083] Figure 10 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 9 Structure diagram of the electrical box in the battery device for some embodiments of the present application;

[0084] Figure 11 Structure diagram of the electrical box in the battery device for some embodiments of the present application; Figure 3 Structure diagram of the electrical box in the battery device for some embodiments of the present application.

[0085] Explanation of the reference signs:

[0086] 1000, vehicle; 100, battery device; 10, electrical box; 1, mounting shell; 11, insulating cover; 12, first electrical connection assembly; 121, first connecting tab; 1211, first branch tab; 122, second connecting tab; 123, third connecting tab; 1231, second branch tab; 124, fourth connecting tab; 125, fifth connecting tab; 13, main housing; 14, second electrical connection assembly; 141, first conductive member; 142, second conductive member; 143, third conductive member; 144, fourth conductive member; 15, third electrical connection assembly; 16, fastener; 17, upper cover; 18, locking structure;

[0087] 2, battery management module; 21, circuit board; 211, master control area; 212, slave control area; 213, first connector;

[0088] 3, power distribution module; 31, fuse; 32, main positive relay; 33, main negative relay; 34, high-voltage connector; 35, fast charging circuit unit; 351, fast charging connector; 352, fast charging relay; 36, pre-charging circuit unit; 361, pre-charging relay; 362, pre-charging resistor; 37, shunt;

[0089] 4, low-voltage connector; 41, support rod; 42, connection terminal;

[0090] 20, battery monomer; 30, sampling assembly; 40, lower shell; 401, first side wall; X, first direction; Y, second direction; 200, controller; 300, motor.

[0091] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0092] The embodiments of the technical scheme of the application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the application, and therefore only serve as examples, and cannot limit the protection scope of the application.

[0093] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the application, and are not intended to limit the application; the terms "include" and "have" in the specification and claims of the application and the above description of drawings are intended to cover non-exclusive inclusion.

[0094] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0095] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0096] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0097] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0098] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0099] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0100] At present, from the development of market situation, the application of power battery is more and more extensive. Power battery is not only applied to energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0101] In the related art, the battery device is configured with a battery monomer, a power distribution module, a sampling assembly and a battery management module. The power distribution module is used for connection, distribution, protection and control between the battery device and the electrical equipment to perform power distribution management, distribute the electric energy of the electric energy system and control the electric energy flow direction of each component. The battery management module is a system for monitoring and managing the battery device, connected with the battery monomer through the sampling assembly, and the temperature and voltage information of each battery monomer can be collected through the sampling assembly; the battery management module also samples the high and low voltage of the power distribution module, collects and calculates the voltage, current, temperature and SOC parameters of the battery monomer and the power distribution module, and controls the charging and discharging process of the battery device.

[0102] At present, the battery management module in the battery device samples the high and low voltage of the battery monomer and the power distribution module through the wire harness, but the wire harness is easy to wear and damage, resulting in high structure failure rate, large space occupation and complicated assembly and production of the battery device.

[0103] Based on the above consideration, the present application provides a battery device, which comprises an electrical box and a battery monomer, the electrical box is electrically connected with the battery monomer, the electrical box comprises a mounting shell, a power distribution module, a battery management module and a first electrical connection assembly, the mounting shell comprises an insulating cover and a main shell, the insulating cover covers the main shell to form an accommodation space; the power distribution module is arranged in the accommodation space on the inner side of the insulating cover; the battery management module is arranged on the outer side of the insulating cover; part of the structure of the first electrical connection assembly is embedded in the insulating cover, and part of the structure of the first electrical connection assembly protrudes from the inner side and the outer side of the insulating cover respectively, so as to connect the power distribution module and the battery management module.

[0104] This arrangement mode sets the battery management module and the power distribution module in the battery device on the mounting shell, which is integrally integrated and convenient to disassemble and assemble; the battery management module and the power distribution module are electrically connected through the first electrical connection assembly embedded in the insulating cover, so that the wire harness connection is not needed, which can solve the problems of high structure failure rate of the battery device, compact overall structure arrangement of the electrical box, relatively small overall volume, small space occupation in the battery device and increasing the battery capacity in the battery device.

[0105] The battery device as a power supply or power supply system of the electric device is a single physical module including one or more battery cells, which can provide higher voltage and capacity. The battery device can include a lower shell, an upper shell, and a battery cell, wherein the upper shell is connected to the lower shell, and the battery cell is arranged in the inner cavity formed by the connection of the upper shell and the lower shell. One or more battery cells can be arranged in series, parallel or series-parallel combination to form a battery module, and only one pair of positive and negative output terminals; the battery cell refers to the smallest unit of storing and outputting electric energy. Among them, the battery cell can be a secondary battery or a primary battery. The battery cell can be, but is not limited to, a metal battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0106] In the embodiments of the present application, the electric device refers to a device that uses the battery device to provide electric energy, which can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0107] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0108] Please refer to Figure 1 , Figure 1 The vehicle 1000 provided in some embodiments of the present application is a structural schematic diagram. The vehicle 1000 can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car, etc. The vehicle 1000 is internally provided with a battery, which can be arranged at the bottom, head or tail of the vehicle 1000. The battery can be used for power supply of the vehicle 1000, for example, the battery can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can also include a controller 200 and a motor 300, and the controller 200 is used to control the battery to supply power to the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0109] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0110] In the battery device 100, the battery cells 20 can be multiple, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection, where the mixed connection means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and the whole of the multiple battery cells 20 is accommodated in the battery box; of course, the battery device 100 can also be that the multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form a battery cell assembly, and the multiple battery cell assemblies are connected in series, in parallel, or in a mixed connection to form a whole, and are accommodated in the battery box. The battery device 100 can also include other structures, for example, the battery device 100 can also include a current combing component for realizing the electrical connection between the multiple battery cells 20.

[0111] The battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0112] According to some embodiments of the present application, in combination with Figures 2 to 4 and Figure 9 In an embodiment of the present application, the battery device 100 includes the electrical box 10 and the battery cell 20, the electrical box 10 is electrically connected with the battery cell 20, the electrical box 10 includes the mounting shell 1, the battery management module 2, the power distribution module 3, and the first electrical connection assembly 12, the mounting shell 1 includes the main shell 13 and the insulating cover 11, the insulating cover 11 covers the main shell 13 to form an accommodation space, the power distribution module 3 is arranged in the accommodation space on the inner side of the insulating cover 11; the battery management module 2 is arranged on the outer side of the insulating cover 11; part of the structure of the first electrical connection assembly 12 is embedded in the insulating cover 11, and part of the structure of the first electrical connection assembly 12 protrudes from the inner side and the outer side of the insulating cover 11, so that the first electrical connection assembly 12 connects the power distribution module 3 and the battery management module 2.

[0113] In an embodiment of the present application, the battery management module 2 and the power distribution module 3 are integrated into the single-module electrical box 10; the electrical box 10 is configured with the mounting shell 1 as a module mounting base, and the mounting shell 1 can be configured to be formed by the main shell 13 and the insulating cover 11 covering each other, and the accommodation space is formed between the main shell 13 and the insulating cover 11, and the main shell 13 and the insulating cover 11 can be fixedly connected by snap connection, bolt connection, or adhesion.

[0114] The battery management module 2 and the power distribution module 3 are arranged on the two sides of the insulating cover body 11 respectively; the power distribution module 3 is arranged in the accommodating space formed by the main shell 13 and the insulating cover body 11, and the battery management module 2 is arranged on the side of the insulating cover body 11 opposite to the accommodating space; optionally, the mounting shell 1 can further include an upper cover 17 covering the outer side of the insulating cover body 11, and at least part of the structure of the battery management module 2 can be arranged between the insulating cover body 11 and the upper cover 17. The power distribution module 3 is used for connection, distribution, protection and control between the battery device 100 and the electrical equipment, so as to perform power distribution management, distribute the electric energy of the electric energy system, and control the electric energy flow direction of each component. The battery management module 2 is a system for monitoring and managing the battery device 100, connected with the battery monomer 20 through the sampling assembly 30, and capable of collecting temperature and voltage information of each battery monomer 20 through the sampling assembly 30; the battery management module 2 also samples high and low voltage of the power distribution module 3, collects and calculates parameters such as voltage, current, temperature and SOC of the battery monomer 20 and the power distribution module 3, and controls the charging and discharging process of the battery device 100.

[0115] The power distribution module 3 can include electrical devices such as main positive relay 32, main negative relay 33, fuse 31, shunt 37 and connector for cooperating with external devices, and each electrical device is electrically connected to form a high-voltage functional circuit. In the application embodiment, the high-voltage circuit refers to a circuit with a voltage exceeding 60V, and the high-voltage connector 34 and other high-voltage devices refer to components capable of passing a current (high-voltage current) exceeding 60V. Correspondingly, the low-voltage circuit refers to a circuit with a voltage not exceeding 60V, and the low-voltage connector 4 refers to a component capable of passing a current (low-voltage current) not exceeding 60V. The battery management module 2 can be arranged as a circuit board or other structural form; optionally, the battery management module 2 includes a master control unit and a slave control unit, the master control unit and the slave control unit are electrically connected, the slave control unit can collect sampling information such as voltage and temperature of the battery monomer 20, and the master control unit can receive sampling information such as voltage, current and temperature collected by the slave control unit and sampling information such as voltage, current and temperature collected from each sampling point of the power distribution module 3, so as to execute main protection and battery management functions according to the sampling information.

[0116] The first electric connection assembly 12 for connecting the battery management module 2 and the power distribution module 3 is embedded in the insulating cover body 11, and the first electric connection assembly 12 can be arranged as a copper bar or other conductive structure. The first electric connection assembly 12 is used to build the electrical connection between the battery management module 2 and the power distribution module 3, which can reduce the arrangement of wire harness.

[0117] The insulating cover body 11 and the first electrical connection assembly 12 can be connected into one body by injection molding, so that the insulating cover body 11 and the first electrical connection assembly 12 are better combined, the connection strength and the overall structural stability are improved, the position of the first electrical connection assembly 12 is relatively stable and is not easy to be deviated. In addition, the first electrical connection assembly 12 is not easy to be worn or damaged by other components of the electrical box 10, and the reliability and stability of the electrical connection can also be improved, so that the risk of abnormality of the high-voltage sampling function due to wear and damage of the wire harness can be reduced, the durability and reliability of the high-voltage sampling function can be ensured, and the service life of the electrical box 10 can be ensured and prolonged. In addition, the insulating cover body 11 and the first electrical connection assembly 12 are combined, the structure arrangement is compact, the space utilization rate is improved, and the occupied space of the first electrical connection assembly 12 is reduced.

[0118] In the technical scheme of the present application, the battery management module 2 and the power distribution module 3 are arranged on the mounting shell 1, and the battery management module 2 and the power distribution module 3 are electrically connected through the first electrical connection assembly 12 embedded in the insulating cover body 11. In this way, the battery management module 2 and the power distribution module 3 are integrated into the electrical box 10, which is convenient to disassemble and assemble, and the battery management module 2 and the power distribution module 3 do not need to be connected by wire harness, so that the overall structure of the electrical box 10 is compact, the overall volume of the integrated electrical box 10 is relatively small, the occupied space in the battery device 100 is small, and the battery capacity in the battery device 100 can be increased.

[0119] In combination with the accompanying drawings, Figure 5 and Figure 6 In an embodiment, the battery management module 2 includes a circuit board 21, the circuit board 21 includes a master control area 211 and a slave control area 212, the master control area 211 is electrically connected to the slave control area 212 through the built-in circuit of the circuit board 21, and a plurality of battery monomers 20 are connected to the same sampling assembly 30, and the sampling assembly 30 is connected to the slave control area 212.

[0120] In the embodiment, the master control area 211 on the circuit board 21 is provided with a master control circuit and corresponding electronic elements, serving as a master control unit of the battery management module 2; and the slave control area 212 on the circuit board 21 is provided with a slave control circuit and corresponding electronic elements, serving as a slave control unit of the battery management module 2. That is, the master control unit and the slave control unit are integrated on the circuit board 21, so that the battery management module 2 is integrated, the number of components of the battery management module 2 is reduced, the connection wire harness or other connecting members between the master control unit and the slave control unit are saved, the overall structure is compact, the volume of the battery management module 2 and the electrical box 10 is reduced, and the battery management module 2 is convenient to disassemble and assemble.

[0121] The battery monomer 20 in the battery device 100 is electrically connected to the slave circuit of the slave area 212 through the sampling assembly 30, so that the voltage signal and temperature signal of the battery monomer 20 can be transmitted to the battery management module 2, so as to realize effective transmission and collection of the voltage signal and temperature signal of the battery monomer 20, and to perform thermal management and / or safety management on the battery monomer 20 according to the sampling signal.

[0122] In the embodiment, the plurality of battery monomers 20 are connected to the same sampling assembly 30, which reduces the number of devices of the battery device 100 and simplifies the structure. Alternatively, all the battery monomers 20 in the battery device 100 can be connected to the same sampling assembly 30, or a plurality of sampling assemblies 30 can be provided, each of which is connected to part of the battery monomers 20, which is not limited herein.

[0123] In combination with the accompanying drawings, Figure 2 and Figure 6 In an embodiment, the circuit board 21 comprises a first connector 213, and the sampling assembly 30 comprises a board body and a second connector, the board body is provided with a sampling circuit, the sampling circuit connects the battery monomer 20 and the second connector, and the first connector 213 and the second connector are plug-connected.

[0124] In the embodiment, the board body 32 of the sampling assembly 30 can be a hard circuit board or a flexible circuit board, the board body 32 is provided with a sampling circuit, the sampling circuit is a conductive layer arranged on the surface or inside of the board body 32, and can be formed of copper wire or other conductive materials. The first connector 213 and the second connector are a male seat and a female seat which can be plug-connected with each other, and the battery management module 2 and the sampling assembly 30 can be connected and separated by pluging and unplugging the first connector 213 and the second connector, which is convenient to disassemble and assemble. Moreover, the adapter wire harness between the sampling assembly 30 and the battery management module 2 can be omitted, the wiring space is saved, and the space utilization of the battery device 100 is improved.

[0125] In an embodiment, the circuit board 21 comprises a first welding portion (not shown), and the sampling assembly 30 comprises a board body and a second welding portion (not shown) arranged on the board body, the board body is provided with a sampling circuit, the sampling circuit connects the battery monomer 20 and the second welding portion, and the first welding portion and the second welding portion are welded to connect the circuit board 21 and the sampling assembly 30.

[0126] In the embodiment, one of the first welding part and the second welding part is provided as a welding pad, and the other is provided as a welding pin, so that the welding pin is welded on the welding pad; or one of the first welding part and the second welding part is provided as a welding hole, and the other is provided as a welding pin, so that the welding pin is inserted into the welding hole and welded. In the above manner, the connection strength between the sampling assembly 30 and the battery management module 2 is high, so that a stable electrical connection relationship between the sampling assembly 30 and the battery management module 2 is maintained, and the performance stability is ensured.

[0127] Referring to Figure 6 , the circuit board 21 is provided with at least two slave control areas 212, and the at least two slave control areas 212 are distributed on both sides of the master control area 2121. Each slave control area 212 can be used to connect at least one sampling assembly 30. The number of sampling channels is increased, and the flexibility of system configuration is improved. The battery device 100 can be applied to different battery capacities and different specifications.

[0128] Referring to Figure 3 and Figure 5 , in an embodiment, the electrical box 10 further comprises a low-voltage connector 4, and the low-voltage connector 4 is directly connected to the battery management module 2.

[0129] In the embodiment, the battery management module 2 has a low-voltage control circuit, and the low-voltage control circuit is a circuit for controlling and operating a high-voltage system. The low-voltage connector 4 is electrically connected to the low-voltage control circuit, so that the low-voltage control circuit can control and operate the connection object of the low-voltage connector 4. That is, the low-voltage control circuit can communicate with the connection object of the low-voltage connector 4 through the low-voltage connector 4, and control and operate the connection object.

[0130] The low-voltage connector 4 is directly connected to the battery management module 2, and the low-voltage connector 4 and the battery management module 2 can be connected by at least one of plug-in connection and welding. The low-voltage connector 4 and the battery management module 2 are no longer connected by a wire harness, which can improve the connection stability between the low-voltage connector 4 and the battery management module 2, reduce the risk of abnormal low-voltage control function caused by easy wear and damage of the wire harness, and also reduce the required space for arranging the wire harness, so that the structure arrangement is compact, the space utilization is improved, and the volume of the electrical box 10 can be reduced.

[0131] Referring to Figure 5 , in an embodiment, the low-voltage connector 4 comprises a connection terminal 42, and the battery management module 2 comprises a master control unit provided with a plug hole (not shown), and the connection terminal 42 is inserted into the plug hole to be plug-connected with the master control unit.

[0132] Specifically, the low-voltage connector 4 is provided with a connecting terminal 42, and the battery management module 2 includes a master control unit, so that the connecting terminal 42 of the low-voltage connector 4 is inserted into the insertion hole of the master control unit, thereby realizing the electrical connection between the low-voltage connector 4 and the battery management module 2.

[0133] Optionally, the battery management module 2 can include a split master control unit and a slave control unit, the master control unit and the slave control unit are electrically connected, the master control unit is connected with the low-voltage connector 4 and the first electrical connection assembly 12, and the slave control unit is used to be electrically connected with the battery monomer 20. The master control unit and the slave control unit can be arranged in an integrated structure, for example, as in the above embodiment, the battery management module 2 is arranged as a circuit board 21, the master control area 211 on the circuit board 21 is provided with a master control circuit and corresponding electronic elements, serving as the master control unit of the battery management module 2; and the slave control area 212 on the circuit board 21 is provided with a slave control circuit and corresponding electronic elements, serving as the slave control unit of the battery management module 2.

[0134] In an embodiment, the connecting terminal 41 is welded to the master control unit. In this way, the connection strength between the low-voltage connector 4 and the battery management module 2 is improved, the low-voltage connector 4 is not easy to separate from the battery management module 2, the connection reliability is improved, the structural stability and performance stability are ensured.

[0135] Please refer to Figure 5 In an embodiment, a support rod 41 is connected between the low-voltage connector 4 and the battery management module 2.

[0136] In this way, the connection strength between the low-voltage connector 4 and the battery management module 2 is improved, the low-voltage connector 4 is not easy to separate from the battery management module 2, the connection reliability is improved, the structural stability and performance stability are ensured. Optionally, the support rod 41 can be connected to the master control unit, and when the battery management module 2 is integrated as a circuit board 21, the support rod 41 can also be connected to the slave control area 212 of the circuit board 21.

[0137] Please refer to Figure 5 , Figure 7 and Figure 11 In an embodiment, the battery device 100 further includes a second electrical connection assembly 14, part of the structure of the second electrical connection assembly 14 is embedded in the main shell 13, and at least part of the electrical devices of the power distribution module 3 are electrically connected through the second electrical connection assembly 14.

[0138] It can be understood that the electrical devices in the power distribution module 3 include the main positive relay 32, the main negative relay 33, the fuse 31, and the connector for connecting external devices such as the high-voltage connector 34; in some embodiments, the power distribution module 3 also includes electrical devices such as the pre-charge relay 361 and the pre-charge resistor 362. In this embodiment, the second electrical connection assembly 14 for connecting the electrical devices in the power distribution module 3 is embedded in the main housing 13 of the mounting shell 1, and the second electrical connection assembly 14 can be provided as a conductive structure such as a copper bar. Using the second electrical connection assembly 14 to build the electrical connection between the electrical devices in the power distribution module 3 can reduce the setting of the wiring harness. Moreover, the second electrical connection assembly 14 is not easily worn or damaged by other components of the electrical box 10, and the reliability and stability of the electrical connection can also be improved, thereby reducing the risk of abnormalities due to wear or damage of the wiring harness, ensuring the effectiveness and reliability of the power distribution module 3, and ensuring and prolonging the service life of the electrical box 10. Moreover, the combination of the main housing 13 and the second electrical connection assembly 14 has a compact structure arrangement, improves space utilization, reduces the occupied space of the second electrical connection assembly 14, reduces the assembly steps of the mounting shell 1, and has good overall structural stability.

[0139] Optionally, the main housing 13 and the second electrical connection assembly 14 can be connected as a whole by injection molding, and the connection strength of the second electrical connection assembly 14 and the main housing 13 can also be strengthened by fasteners 16 such as bolts. The fasteners 16 can also be used to build the electrical connection between the second electrical connection assembly 14 and other devices; thereby better combining the second electrical connection assembly 14 and the main housing 13, improving the connection strength and overall structural stability, and the position of the second electrical connection assembly 14 is relatively stable and is not easily offset.

[0140] In combination with reference to Figure 7 and Figure 8 In an embodiment, the electrical devices of the power distribution module 3 include the main positive relay 32, the high-voltage connector 34, and the main negative relay 33, which are connected in series through the second electrical connection assembly 14; and the main positive relay 32 and the main negative relay 33 are respectively electrically connected to the battery management module 2 through the first electrical connection assembly 12.

[0141] In the embodiment, the high-voltage functional loop is formed by the main positive relay 32, the main negative relay 33 and the high-voltage connector 34 in the power distribution module 3. The main positive relay 32 is used to control the on-off of the positive circuit between the electrical box 10 and the battery monomer 20, and the main negative relay 33 is used to control the on-off of the negative circuit between the electrical box 10 and the battery monomer 20. The connector is connected to the high-voltage loop unit between the main positive relay 32 and the main negative relay 33, which can be used to connect external devices, so that the battery device 100 can be charged and discharged through the high-voltage connector 34. Alternatively, the power distribution module 3 can be provided with a plurality of parallel high-voltage loop units between the main positive relay 32 and the main negative relay 33, and each high-voltage loop unit is provided with a connector, for example, the high-voltage connector 34 and the fast charging connector 351 in the following embodiments.

[0142] In the embodiment, the first electrical connection assembly 12 includes at least two fifth connecting tabs 125, and each relay in the power distribution module 3, such as the main positive relay 32, the main negative relay 33 and the pre-charging relay 361 in the following embodiments, is electrically connected to the battery management module 2 through the fifth connecting tab 125, so as to control the on-off state of each relay. This arrangement saves the relay control harness between the battery management module 2 and the power distribution module 3, saves wiring space, and is conducive to improving the space utilization of the battery device 100 and reducing the risk of unstable relay control function caused by easy wear and damage of the harness.

[0143] In an embodiment, the second electrical connection assembly 14 includes a first conductive part 141 and a second conductive part 142, and the first electrical connection assembly 12 includes a first connecting tab 121 and a second connecting tab 122. The main positive relay 32 and the high-voltage connector 34 are electrically connected through the first conductive part 141, and the two ends of the first connecting tab 121 are respectively connected to the first conductive part 141 and the battery management module 2. The main negative relay 33 and the high-voltage connector 34 are electrically connected through the second conductive part 142, and the two ends of the second connecting tab 122 are respectively connected to the second conductive part 142 and the battery management module 2.

[0144] In the embodiment, the negative voltage end of the main positive relay 32 is electrically connected to the positive voltage end of the high-voltage loop unit through the first conductive part 141, and the first conductive part 141 is provided with a high-voltage positive sampling point. One of the plurality of first electrical connection assemblies 12 embedded in the insulating cover 11 is configured as the first connecting tab 121, and the two ends of the first connecting tab 121 are respectively connected to the high-voltage positive sampling point and the battery management module 2, so that the battery management module 2 can obtain the sampling information such as voltage and temperature of the high-voltage positive sampling point.

[0145] The negative voltage terminal of the main negative relay 33 is connected to the negative electrode of the battery cell 20, and the positive voltage terminal of the main negative relay 33 is connected to the negative voltage terminal of the high-voltage loop unit through the second conductive member 142, and the second conductive member 142 is provided with a high-voltage negative sampling point. One of the plurality of first electrical connection assemblies 12 embedded in the insulating cover 11 is configured as a second connecting lug 122, and the two ends of the second connecting lug 122 are respectively connected to the high-voltage negative sampling point and the battery management module 2, so that the battery management module 2 can obtain the voltage and temperature sampling information of the high-voltage negative sampling point.

[0146] In this way, by sampling and monitoring the high-voltage at different positions in the power distribution module 3 through the first electrical connection assembly 12, the voltage information of the high-voltage circuit controlled by the main positive relay 32 and the main negative relay can be monitored, so that corresponding control and protection operations can be performed as needed, ensuring the normal operation of the electrical box 10 and the battery device 100, and ensuring the use performance and service life of the electrical box 10 and the battery device 100.

[0147] The power distribution module 3 can also include other electrical devices, such as a shunt 37 for shunting current or signals to different devices or components to achieve current shunting, distribution and control. The power distribution module 3 can also include the fast charging loop unit 35 and the pre-charging loop unit 36 in the embodiments below, which will not be described here.

[0148] In an embodiment, the power distribution module 3 further includes a fuse 31, and the positive voltage terminal of the main positive relay 32 and the fuse 31 are electrically connected through a third conductive member 143. The first electrical connection assembly 12 further includes a third connecting lug 123, and the two ends of the third connecting lug 123 are respectively connected to the third conductive member 143 and the battery management module 2.

[0149] The fuse 31 can automatically cut off the power supply when the electrical device is overloaded or the line is short-circuited, to ensure that the accessory device is not damaged, and to play a protection role. The positive voltage terminal of the fuse 31 is connected to the positive electrode of the battery cell 20, and the positive voltage terminal of the main positive relay 32 and the negative voltage terminal of the fuse 31 are electrically connected through the third conductive member 143, and an insurance output sampling point is provided on the third conductive member 143. The first electrical connection assembly 12 embedded in the insulating cover 11 includes a third connecting lug 123, and the two ends of the third connecting lug 123 are respectively connected to the insurance output sampling point and the battery management module 2, so that the battery management module 2 can obtain the voltage and temperature sampling information of the insurance output sampling point.

[0150] For reference Figure 7 and Figure 8In an embodiment, the power distribution module 3 further comprises a pre-charge circuit unit 36 connected in parallel with the main positive relay 32, the pre-charge circuit unit 36 comprising a pre-charge relay 361 and a pre-charge resistor 362 connected in series through the third electrical connection assembly 15; the positive voltage end of the pre-charge circuit unit 36 is connected with the third connecting lug 123, and the negative voltage end of the pre-charge circuit unit 36 is connected with the first connecting lug 121.

[0151] In the present embodiment, the pre-charge circuit unit 36 is arranged in the power distribution module 3, and the pre-charge circuit unit 36 generally comprises a pre-charge relay 361 and a pre-charge resistor 362 connected in series; the pre-charge circuit unit 36 is connected in parallel with the main positive relay 32, and the pre-charge circuit unit 36 can be turned on before the main positive relay 32 to perform self-checking, thereby protecting the system from damage caused by surge power. In this way, the power distribution module 3 integrates the pre-charge function, thereby optimizing the performance of the electrical box 10; and the pre-charge circuit unit 36 can be directly connected to the third connecting lug 123 and the first connecting lug 121 to be connected in parallel with the main positive relay 32, thereby simplifying the electrical connection structure of the power distribution module 3 and facilitating the integration and miniaturization of the power distribution module 3 and the electrical box 10.

[0152] Referring to Figure 8 In an embodiment, the first connecting lug 121 is branched to have a first branch lug 1211 connected with the negative voltage end of the pre-charge circuit unit 36.

[0153] In this way, by branching the first connecting lug 121 to have the first branch lug 1211 connected with the pre-charge circuit unit 36, the first branch lug 1211 can be extended to a position facilitating the connection of the pre-charge circuit unit 36, thereby improving the connection convenience and design flexibility.

[0154] Referring to Figure 8 In an embodiment, the third connecting lug 123 is branched to have a second branch lug 1231 connected with the positive voltage end of the pre-charge circuit unit 36.

[0155] In this way, by branching the third connecting lug 123 to have the second branch lug 1231 connected with the pre-charge circuit unit 36, the second branch lug 1231 can be extended to a position facilitating the connection of the pre-charge circuit unit 36, thereby improving the connection convenience and design flexibility.

[0156] Referring to Figure 7 and Figure 8In an embodiment, the power distribution module 3 further comprises a fast charging circuit unit 35, the fast charging circuit unit 35 comprises a fast charging connector 351 and a fast charging relay 352 connected in series through a fourth conductive piece 144, and a part of the fourth conductive piece 144 is embedded in the main shell 13; the first electrical connection assembly 12 further comprises a fourth connecting tab 124, two ends of the fourth connecting tab 124 are connected with the fourth conductive piece 144 and the battery management module 2 respectively.

[0157] In the present embodiment, two high-voltage circuit units in parallel are arranged in the power distribution module 3, one of which is configured as the fast charging circuit unit 35, and the connector arranged thereon is the fast charging connector 351, and the electricity passing through the fast charging connector 351 is high-voltage direct current, which can be directly delivered to the battery cell 20 for charging without processing, thereby improving the charging speed, and the fast charging relay 352 of the fast charging circuit unit 35 is electrically connected with the battery management module 3 through the fifth connecting tab 125, so that the opening and closing of the fast charging circuit unit 35 can be controlled by the battery management module 3. The other high-voltage circuit unit is configured as a high-voltage slow charging circuit, and in order to distinguish, the connector arranged on the high-voltage slow charging circuit is the high-voltage connector 34, and the electricity passing through the high-voltage connector 34 is high-voltage alternating current, which needs to be converted by the electrical box 10 before being delivered to the battery cell 20 for charging.

[0158] In this way, the fast charging connector 351 and the high-voltage connector 34 can be selected according to the needs to charge the battery cell 20, thereby enriching the functions of the electrical box 10. Moreover, in the parallel connection mode, the two charging circuits are sampled and monitored through the same sampling point, which can simplify the structure of the power distribution module 3 and is conducive to the integration and miniaturization of the power distribution module 3 and the electrical box 10; and the fast charging circuit unit 35 is sampled through the fourth connecting tab 124, thereby ensuring the stability of the fast charging function.

[0159] The second electrical connection assembly 14 comprises a fourth conductive piece 144 for connecting the fast charging relay 352 and the fast charging connector 351, and the fourth conductive piece 144 is also embedded in the main shell 13, thereby reducing the arrangement of the wiring harness. Moreover, the fourth conductive piece 144 is not easy to be worn or damaged by other components of the electrical box 10, and the reliability and stability of the electrical connection can also be improved, thereby reducing the risk of abnormality caused by wear and damage of the wiring harness.

[0160] Please refer to Figure 10 In an embodiment, a part of the third electrical connection assembly 15 is embedded in the insulating cover 11.

[0161] In the embodiment, the pre-charging relay 361 is electrically connected with the battery management module 3 through the fifth connecting tab 125, and the battery management module 3 can control the opening and closing of the pre-charging circuit unit 36; in specific applications, the pre-charging circuit unit can be connected through the pre-charging relay 361 before the main positive relay 32 is connected, so as to perform self-checking and protect the system from damage caused by a surge power supply; the pre-charging resistor 362 has a current limiting effect, which prevents large current at the power-on moment from damaging other electrical devices in the high-voltage system.

[0162] The pre-charging relay 361 and the pre-charging resistor 362 are electrically connected through the third electrical connection assembly 15 embedded in the insulating cover 11. The third electrical connection assembly 15 can be a copper tab or other conductive tab, so that the pre-charging relay 361 and the pre-charging resistor 362 do not need to be connected by a wire harness, thereby improving the connection convenience and stability. Optionally, the insulating cover 11 and the third electrical connection assembly 15 can be integrally connected by injection molding. Thus, the third electrical connection assembly 15 is well combined with the insulating cover 11, thereby improving the connection strength and overall structural stability. The position of the third electrical connection assembly 15 is relatively stable and is not easy to be deviated, which ensures the stable connection of the pre-charging relay 361 and the pre-charging resistor 362, and the overall structure is stable and compact, which is conducive to the integration and miniaturization of the electrical box 10.

[0163] In combination with reference to Figure 6 and Figure 7 In an embodiment, the first electrical connection assembly 12 is directly welded with the battery management module 2. In this arrangement, the connection strength between the first electrical connection assembly 12 and the battery management module 2 is high, so that the first electrical connection assembly 12 and the battery management module 2 have a stable electrical connection relationship, thereby ensuring the stable performance of the electrical box 10.

[0164] In an embodiment, the first electrical connection assembly 12 is integrally injection molded with the insulating cover 11. In this arrangement, the first electrical connection assembly 12 and the insulating cover 11 are conveniently and stably integrated.

[0165] In combination with reference to Figure 5 and Figure 8 In an embodiment, the first electrical connection assembly 12 is electrically connected with the power distribution module 3 through the fastener 16.

[0166] In the embodiment, the fastener 16 can be a bolt or other conductive connecting piece, so that the first electrical connection assembly 12 and the power distribution module 3 are conveniently connected and disassembled, and also have good connection strength and stability, thereby ensuring the stable performance of the electrical box 10. Optionally, the fastener 16 is arranged in the main housing 13 and the second electrical connection assembly 14 embedded in the main housing 13, and is connected with the first electrical connection assembly 12, so that the first electrical connection assembly 12 is electrically connected with the power distribution module 3 through the second electrical connection assembly 14.

[0167] With reference to Figures 4 to 6 In an embodiment, the mounting shell 1 further comprises an upper cover 17, the upper cover 17 covers one side of the insulating cover 11 away from the main shell 13, and the battery management module 2 is arranged between the upper cover 17 and the insulating cover 11.

[0168] In this way, the upper cover 17 and the insulating cover 11 are covered with each other to form a containing space, and the upper cover 17 and the insulating cover 11 can better protect the battery management module 2 and reduce the risk of damage to the battery management module 2. The upper cover 17 and the insulating cover 11 can be connected and fixed by snap connection, bolt connection or adhesion.

[0169] With reference to Figure 2 And Figure 3 In an embodiment, please refer to Figure 1 In an embodiment, the battery device 100 further comprises a lower shell 40, the lower shell 40 comprises a bottom wall and a side wall arranged around the bottom wall, the bottom wall and the side wall form a containing space, one side of the side wall is a first side wall 401, and the first side wall 401 is provided with a avoiding opening; at least part of the structure of at least one of the low-voltage connector 4, the high-voltage connector 34 or other connectors of the electrical box 10 is arranged from the side of the first side wall 401 facing the containing space to the side of the first side wall 401 away from the containing space and passes through the avoiding opening.

[0170] In this embodiment, the connector of the electrical box 10 is arranged in the avoiding opening of the first side wall 401 to be exposed outside the lower shell 40, wherein the connector of the electrical box 10 comprises at least one of the low-voltage connector 4, the high-voltage connector 34 and the fast charging connector 351 in the foregoing embodiments, and the electrical box 10 is electrically connected with external electrical appliances through the connector.

[0171] With reference to Figure 2 And Figure 3 In an embodiment, the mounting shell 1 is provided with a locking structure 18, and the locking structure 18 is locked to the first side wall 401.

[0172] Specifically, the locking structure 18 provided on the mounting shell 10 is configured to fix the electrical box 10 along a first direction X, in a specific application, the first direction X is the arrangement direction of the electrical box 10 and the first side wall 401, and the depth direction of the accommodating space is a second direction Y, which is perpendicular to the first direction X. In this way, the locking structure 18 can be fixed on the first side wall 40 of the lower shell 40, so that the locking force acting on the locking structure 18 when it is fixed is directed to the side of the electrical box 10, so that the electrical box 10 will not be subjected to pressure towards the bottom wall of the mounting space, thereby preventing the connector from being offset, ensuring the position of the connector, and avoiding the problem of poor electrical connection caused by the offset of the connector, increasing the reliability of the connector, reducing the problem of incomplete installation, and ensuring stable performance.

[0173] Optionally, the locking structure 18 can be provided with a connecting hole and locked on the lower shell 40 of the battery device 100 by means of a bolt or a rivet, or can be provided as a clamping or plug-in structure to be clamped or plugged with the lower shell 40, which is not limited herein.

[0174] Please refer to Figures 2 to 11 The application further provides an electrical box 10, which comprises a mounting shell 1, a battery management module 2, a power distribution module 3, and a first electrical connection assembly 12. The mounting shell 1 comprises a main shell 13 and an insulating cover 11, and the insulating cover 11 covers the main shell 13 to form an accommodating space. The power distribution module 3 is arranged in the accommodating space on the inner side of the insulating cover 11. The battery management module 2 is arranged on the outer side of the insulating cover 11. Part of the structure of the first electrical connection assembly 12 is embedded in the insulating cover 11, and part of the structure of the first electrical connection assembly 12 protrudes from the inner side and the outer side of the insulating cover 11, so that the first electrical connection assembly 12 connects the power distribution module 3 and the battery management module 2.

[0175] In the embodiment of the application, the battery management module 2 and the power distribution module 3 are integrated into a single module electrical box 10. The electrical box 10 is provided with a mounting shell 1 as a module mounting base. The mounting shell 1 can be configured by at least the main shell 13 and the insulating cover 11 which are covered with each other to form an accommodating space. The main shell 13 and the insulating cover 11 can be fixedly connected by means of buckle connection, bolt connection or adhesion.

[0176] The battery management module 2 and the power distribution module 3 are arranged on the two sides of the insulating cover body 11 respectively; the power distribution module 3 is arranged in the accommodating space formed by the main shell 13 and the insulating cover body 11, and the battery management module 2 is arranged on the side of the insulating cover body 11 opposite to the accommodating space; optionally, the mounting shell 1 can further include an upper cover 17 covering the outer side of the insulating cover body 11, and at least part of the structure of the battery management module 2 can be arranged between the insulating cover body 11 and the upper cover 17. The power distribution module 3 is used for connection, distribution, protection and control between the battery device 100 and the electrical equipment, so as to perform power distribution management, distribute the electric energy of the electric energy system, and control the electric energy flow direction of each component. The battery management module 2 is a system for monitoring and managing the battery device 100, connected with the battery monomer 20 through the sampling assembly 30, and capable of collecting temperature and voltage information of each battery monomer 20 through the sampling assembly 30; the battery management module 2 also samples high and low voltage of the power distribution module 3, collects and calculates parameters such as voltage, current, temperature and SOC of the battery monomer 20 and the power distribution module 3, and controls the charging and discharging process of the battery device 100.

[0177] The power distribution module 3 can include main positive relay 32, main negative relay 33, fuse 31, shunt 37, and connector for cooperating with external devices, and the like electrical devices, and each electrical device is electrically connected to form a high-voltage functional circuit. In the application embodiment, the high-voltage circuit refers to a circuit with a voltage exceeding 60V, and the high-voltage connector 34 and other high-voltage devices refer to components capable of passing a current (high-voltage current) exceeding 60V. Accordingly, the low-voltage circuit refers to a circuit with a voltage not exceeding 60V, and the low-voltage connector 4 refers to a component capable of passing a current (low-voltage current) not exceeding 60V. The battery management module 2 can be arranged as a circuit board or other structural form; optionally, the battery management module 2 includes a master control unit and a slave control unit, the master control unit and the slave control unit are electrically connected, the slave control unit can collect sampling information such as voltage and temperature of the battery monomer 20, and the master control unit can receive sampling information such as voltage, current and temperature collected by the slave control unit and sampling information such as voltage, current and temperature collected from each sampling point of the power distribution module 3, so as to execute main protection and battery management functions according to the sampling information.

[0178] The first electric connection assembly 12 for connecting the battery management module 2 and the power distribution module 3 is embedded in the insulating cover body 11, and the first electric connection assembly 12 can be arranged as a copper bar or other conductive structure. The first electric connection assembly 12 is used to build the electrical connection between the battery management module 2 and the power distribution module 3, which can reduce the arrangement of wire harness.

[0179] The insulating cover 11 and the first electrical connection assembly 12 can be connected into one body by injection molding, so that the insulating cover 11 and the first electrical connection assembly 12 are better combined, the connection strength and the overall structural stability are improved, the position of the first electrical connection assembly 12 is relatively stable and is not easy to be deviated. In addition, the first electrical connection assembly 12 is not easy to be worn or damaged by other components of the electrical box 10, and the reliability and stability of the electrical connection can also be improved, so that the risk of abnormality of the high-voltage sampling function due to wear and damage of the wire harness can be reduced, the durability and reliability of the high-voltage sampling function can be ensured, and the service life of the electrical box 10 can be ensured and prolonged. In addition, the insulating cover 11 and the first electrical connection assembly 12 are combined, the structure arrangement is compact, the space utilization rate is improved, and the occupied space of the first electrical connection assembly 12 is reduced.

[0180] In the technical solution of the present application, the battery management module 2 and the power distribution module 3 are arranged on the mounting shell 1, and the battery management module 2 and the power distribution module 3 are electrically connected through the first electrical connection assembly 12 embedded in the insulating cover 11. In this way, the battery management module 2 and the power distribution module 3 are integrated into the electrical box 10, which is convenient to disassemble and assemble, and the battery management module 2 and the power distribution module 3 do not need to be connected by wire harness, and the overall structure of the electrical box 10 is compact, so that the overall volume of the integrated electrical box 10 is relatively small, the occupied space in the battery device 100 is small, and the battery capacity in the battery device 100 can be increased.

[0181] In combination with the drawings Figure 5 and Figure 6 In an embodiment, the battery management module 2 includes a circuit board 21, the circuit board 21 includes a master control area 211 and a slave control area 212, the master control area 211 is electrically connected to the slave control area 212 through the built-in circuit of the circuit board 21, and a plurality of battery monomers 20 are connected to the same sampling assembly 30, and the sampling assembly 30 is connected to the slave control area 212.

[0182] In the embodiment, the master control area 211 on the circuit board 21 is provided with a master control circuit and corresponding electronic elements as a master control unit of the battery management module 2, and the slave control area 212 on the circuit board 21 is provided with a slave control circuit and corresponding electronic elements as a slave control unit of the battery management module 2. That is, the master control unit and the slave control unit are integrated on the circuit board 21, so that the battery management module 2 is integrated, the number of components of the battery management module 2 is reduced, the connection wire harness or other connecting members between the master control unit and the slave control unit are saved, the overall structure is compact, the volume of the battery management module 2 and the electrical box 10 is reduced, and the battery management module 2 is also convenient to disassemble and assemble.

[0183] The battery monomer 20 in the battery device 100 is electrically connected to the slave circuit of the slave area 212 through the sampling assembly 30, so that the voltage signal and temperature signal of the battery monomer 20 can be transmitted to the battery management module 2, so as to realize effective transmission and collection of the voltage signal and temperature signal of the battery monomer 20, and to perform thermal management and / or safety management on the battery monomer 20 according to the sampling signal.

[0184] In the embodiment, the plurality of battery monomers 20 are connected to the same sampling assembly 30, which reduces the number of devices of the battery device 100 and simplifies the structure. Alternatively, all the battery monomers 20 in the battery device 100 can be connected to the same sampling assembly 30, or a plurality of sampling assemblies 30 can be provided, each of which is connected to part of the battery monomers 20, which is not limited herein.

[0185] In combination with reference to Figure 2 and Figure 4 In an embodiment, the circuit board 21 comprises a first connector 213, the sampling assembly 30 comprises a board body and a second connector (not shown), the board body is provided with a sampling circuit, the sampling circuit connects the battery monomer 20 and the second connector, and the first connector 213 and the second connector are plug-connected.

[0186] In the embodiment, the board body 32 of the sampling assembly 30 can be a hard circuit board or a flexible circuit board, the board body 32 is provided with a sampling circuit, the sampling circuit is a conductive layer arranged on the surface or inside of the board body 32, and can be formed of copper wire or other conductive materials. The first connector 213 and the second connector are a male seat and a female seat which can be plug-connected with each other, and the battery management module 2 and the sampling assembly 30 can be connected and separated by pluging and unplugging the first connector 213 and the second connector, which is convenient to disassemble and assemble. Moreover, the adapter wire harness between the sampling assembly 30 and the battery management module 2 can be omitted, the wiring space is saved, and the space utilization of the battery device 100 is improved.

[0187] In an embodiment, the circuit board 21 comprises a first welding portion (not shown), the sampling assembly 30 comprises a board body and a second welding portion (not shown) arranged on the board body, the board body is provided with a sampling circuit, the sampling circuit connects the battery monomer 20 and the second welding portion, and the first welding portion and the second welding portion are welded to connect the circuit board 21 and the sampling assembly 30.

[0188] In the embodiment, one of the first welding portion and the second welding portion is provided as a welding pad, and the other is provided as a welding pin, and the welding pin is welded on the welding pad; or one of the first welding portion and the second welding portion is provided as a welding hole, and the other is provided as a welding pin, and the welding pin is inserted into the welding hole and welded. In the above manner, the connection strength between the sampling assembly 30 and the battery management module 2 is high, so that the sampling assembly 30 and the battery management module 2 maintain a stable electrical connection relationship, and the performance is stable.

[0189] With reference to Figure 3 and Figure 5 In an embodiment, the electrical box 10 further comprises a low-voltage connector 4, and the low-voltage connector 4 is directly connected to the battery management module 2.

[0190] In the embodiment, the battery management module 2 has a low-voltage control circuit, the low-voltage control circuit is a circuit for controlling and operating a high-voltage system, and the low-voltage connector 4 is electrically connected to the low-voltage control circuit, so that the low-voltage control circuit can control the connection object of the low-voltage connector 4 at low voltage. That is, the low-voltage control circuit can communicate with the connection object of the low-voltage connector 4 through the low-voltage connector 4 and control and operate the connection object.

[0191] The low-voltage connector 4 is directly connected in the battery management module 2, and the low-voltage connector 4 and the battery management module 2 can be connected by at least one of plug-in connection, welding and the like; the low-voltage connector 4 and the battery management module 2 are no longer connected by a wire harness, which can improve the connection stability between the low-voltage connector 4 and the battery management module 2, reduce the risk of abnormal low-voltage control function caused by easy wear and damage of the wire harness, and also reduce the required space for arranging the wire harness, make the structure arrangement compact, improve the space utilization, and can reduce the volume of the electrical box 10.

[0192] Please refer to Figure 5 In an embodiment, the low-voltage connector 4 comprises a connection terminal 42, and the battery management module 2 comprises a master control unit, and the master control unit is provided with a plug hole (not shown), and the connection terminal 42 is inserted into the plug hole to be plug-connected with the master control unit.

[0193] Specifically, the low-voltage connector 4 is provided with a connection terminal 42, and the battery management module 2 comprises a master control unit, so that the connection terminal 42 of the low-voltage connector 4 is inserted into the plug hole of the master control unit, thereby electrically connecting the low-voltage connector 4 and the battery management module 2.

[0194] Optionally, the battery management module 2 can include a master control unit and a slave control unit, the master control unit and the slave control unit are electrically connected, the master control unit is connected with the low-voltage connector 4 and the first electrical connection assembly 12, and the slave control unit is used to be electrically connected with the battery monomer 20. The master control unit and the slave control unit can be arranged in an integrated structure, for example, in the foregoing embodiment, the battery management module 2 is arranged as the circuit board 21, the master control area 211 on the circuit board 21 is provided with a master control circuit and corresponding electronic elements, serving as the master control unit of the battery management module 2; and the slave control area 212 on the circuit board 21 is provided with a slave control circuit and corresponding electronic elements, serving as the slave control unit of the battery management module 2.

[0195] In an embodiment, the connecting terminal 41 is welded to the master control unit. In this way, the connection strength between the low-voltage connector 4 and the battery management module 2 is improved, the low-voltage connector 4 is less likely to be separated from the battery management module 2, the connection reliability is improved, and the structural stability and performance stability are ensured.

[0196] Please refer to Figure 5 In an embodiment, the low-voltage connector 4 is connected with the battery management module 2 through a support rod 41.

[0197] In this way, the connection strength between the low-voltage connector 4 and the battery management module 2 is improved, the low-voltage connector 4 is less likely to be separated from the battery management module 2, the connection reliability is improved, and the structural stability and performance stability are ensured. Optionally, the support rod 41 can be connected to the master control unit, and when the battery management module 2 is integrated as the circuit board 21, the support rod 41 can also be connected to the slave control area 212 of the circuit board 21.

[0198] Please refer to Figure 5 , Figure 7 and Figure 11 In an embodiment, the battery device 100 further includes a second electrical connection assembly 14; part of the structure of the second electrical connection assembly 14 is embedded in the main shell 13, and at least part of the electrical devices of the power distribution module 3 are electrically connected through the second electrical connection assembly 14.

[0199] It can be understood that the electrical devices in the power distribution module 3 include the main positive relay 32, the main negative relay 33, the fuse 31, and the connector for connecting external devices such as the high-voltage connector 34; in some embodiments, the power distribution module 3 also includes electrical devices such as the pre-charge relay 361 and the pre-charge resistor 362. In this embodiment, the second electrical connection assembly 14 for connecting the various electrical devices in the power distribution module 3 is embedded in the main housing 13 of the mounting shell 1, and the second electrical connection assembly 14 can be provided as a conductive structure such as a copper bar. Using the second electrical connection assembly 14 to build electrical connections between the electrical devices in the power distribution module 3 can reduce the need for wiring harnesses. Moreover, the second electrical connection assembly 14 is less likely to be worn or damaged by other components of the electrical box 10, and the reliability and stability of the electrical connection can be improved, thereby reducing the risk of abnormalities caused by wear or damage to the wiring harness, ensuring the effectiveness and reliability of the power distribution module 3, and extending the service life of the electrical box 10. Moreover, the combination of the main housing 13 and the second electrical connection assembly 14 has a compact structure, improves space utilization, reduces the occupied space of the second electrical connection assembly 14, reduces the assembly steps of the mounting shell 1, and has good overall structural stability.

[0200] Optionally, the main housing 13 and the second electrical connection assembly 14 can be connected as a whole by injection molding, and the connection strength of the second electrical connection assembly 14 and the main housing 13 can be further enhanced by fasteners 16 such as bolts. The fasteners 16 can also be used to build electrical connections between the second electrical connection assembly 14 and other devices. Thus, the second electrical connection assembly 14 is better combined with the main housing 13, improving the connection strength and overall structural stability, and the position of the second electrical connection assembly 14 is relatively stable and less likely to be offset.

[0201] The electrical box 10 proposed in the present application can also use the technical solutions adopted by the electrical box 10 in the embodiments of the battery device 100 described above, which will not be described here.

[0202] The utility model also provides a kind of electric device, and electric device includes the battery device 100 provided in any of the preceding embodiments. In the embodiments of the present application, the electric device refers to a device that uses batteries to provide power, which can be but not limited to mobile phones, tablets, laptops, electric toys, power tools, electric cars, electric cars, ships, spacecraft and the like. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, and the like. Spacecraft can include airplanes, rockets, space shuttles and spacecraft, and the like.

[0203] The specific structure of the battery device 100 in the present embodiment is referred to the above embodiments. By using the battery device 100 provided in the preceding embodiments in the electric device, the battery capacity of the battery device 100 in the electric device can be increased, and the use performance of the electric device can be improved.

[0204] Since all the technical solutions of the above-mentioned embodiments are adopted in the electric device, at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are possessed, which will not be repeated here.

[0205] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields made by using the content of the present application specification and drawings is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that, The battery device includes an electrical box and battery cells, the electrical box being electrically connected to the battery cells, and the electrical box comprising: The mounting housing includes an insulating cover and a main housing, wherein the insulating cover covers the main housing to form an accommodating space; A power distribution module, wherein the power distribution module is disposed in the receiving space inside the insulating cover; A battery management module is provided on the outside of the insulating cover; A first electrical connection component is partially embedded in the insulating cover, and a portion of the first electrical connection component protrudes from the inner and outer sides of the insulating cover, so that the first electrical connection component connects the power distribution module and the battery management module.

2. The battery device as claimed in claim 1, characterized in that, The battery management module includes a circuit board, which includes a master control area and a slave control area. The master control area is electrically connected to the slave control area through the built-in circuit of the circuit board. Multiple battery cells are connected to the same sampling component, which is connected to the slave control area.

3. The battery device as claimed in claim 2, characterized in that, The circuit board includes a first connector, and the sampling component includes a board body and a second connector. The board body is provided with a sampling line, which connects the battery cell to the second connector. The first connector and the second connector are plugged into each other.

4. The battery device as claimed in claim 2, characterized in that, The circuit board includes a first soldering part, and the sampling component includes a board body and a second soldering part disposed on the board body. The board body is provided with a sampling line, which connects the battery cell and the second soldering part. The first soldering part and the second soldering part are soldered to connect the circuit board and the sampling component.

5. The battery device as claimed in claim 1, characterized in that, The electrical box also includes a low-voltage connector, which is directly connected to the battery management module.

6. The battery device as claimed in claim 5, characterized in that, The low-voltage connector includes a connection terminal, and the battery management module includes a main control unit. The main control unit is provided with a socket, and the connection terminal is inserted into the socket to connect with the main control unit.

7. The battery device as claimed in claim 6, characterized in that, The connection terminal is welded to the main control unit; And / or, a support rod is connected between the low-voltage connector and the battery management module.

8. The battery device as claimed in claim 1, characterized in that, The battery device further includes a second electrical connection component, a portion of which is embedded in the main housing, and at least some of the electrical components of the power distribution module are electrically connected through the second electrical connection component.

9. The battery device as claimed in claim 8, characterized in that, The power distribution module includes a main positive relay, a high-voltage connector, and a main negative relay, which are connected in series via the second electrical connection component. The main positive relay and the main negative relay are respectively electrically connected to the battery management module through the first electrical connection component.

10. The battery device as claimed in claim 9, characterized in that, The second electrical connection assembly includes a first conductive element and a second conductive element, and the first electrical connection assembly further includes a first connecting tab and a second connecting tab; The main positive relay and the high voltage connector are electrically connected through the first conductive element, and the two ends of the first connecting plate are respectively connected to the first conductive element and the battery management module; The main negative relay and the high voltage connector are electrically connected through a second conductive element, and the two ends of the second connecting plate are respectively electrically connected to the second conductive element and the battery management module.

11. The battery device as claimed in claim 10, characterized in that, The power distribution module also includes a fuse, and the second electrical connection assembly also includes a third conductive element. The fuse is electrically connected to the positive voltage terminal of the main positive relay through the third conductive element. The first electrical connection assembly further includes a third connection bar, the two ends of which are respectively connected to the third conductive element and the battery management module.

12. The battery device as claimed in claim 11, characterized in that, The power distribution module also includes a pre-charge circuit unit connected in parallel with the main positive relay. The pre-charge circuit unit includes a pre-charge relay and a pre-charge resistor connected in series through a third electrical connection component. The positive pressure end of the pre-charge circuit unit is connected to the third connecting plate, and the negative pressure end of the pre-charge circuit unit is connected to the first connecting plate.

13. The battery device as claimed in claim 12, characterized in that, A portion of the structure of the third electrical connection component is embedded in the insulating cover.

14. The battery device as claimed in claim 12, characterized in that, The first connecting bar is provided with a first branch bar that is connected to the negative pressure end of the pre-charge circuit unit; And / or, the third connecting bar branch is provided with a second branch bar connected to the positive pressure end of the precharge circuit unit.

15. The battery device as claimed in claim 8, characterized in that, The power distribution module includes a fast charging circuit unit, which includes a fast charging connector and a fast charging relay connected in series via a fourth conductive element. A portion of the structure of the fourth conductive element is embedded in the main housing. The first electrical connection assembly further includes a fourth connection bar, the two ends of which are respectively connected to the fourth conductive element and the battery management module.

16. The battery device as claimed in claim 1, characterized in that, The first electrical connection component is directly soldered to the battery management module; And / or, the first electrical connection assembly is integrally injection molded with the insulating cover; And / or, the first electrical connection component is electrically connected to the power distribution module via fasteners.

17. The battery device as claimed in claim 1, characterized in that, The mounting housing also includes a top cover, which covers the insulating cover on the side opposite to the main housing, and the battery management module is located between the top cover and the insulating cover.

18. The battery device according to any one of claims 1 to 17, characterized in that, The battery device also includes a lower housing, which has an installation space and a clearance opening on the first side wall of the lower housing; Both the battery cell and the electrical box are located in the mounting space. At least a portion of the structure of at least one of the low-voltage connector, high-voltage connector, or other connectors of the electrical box extends from the side of the first sidewall facing the mounting space to the side of the first sidewall away from the mounting space through the clearance opening.

19. The battery device as claimed in claim 18, characterized in that, The mounting housing is provided with a locking structure, which is locked to the first side wall.

20. An electrical box, characterized in that, include: The mounting housing includes an insulating cover and a main housing, wherein the insulating cover covers the main housing to form an accommodating space; A power distribution module, wherein the power distribution module is disposed in the receiving space inside the insulating cover; A battery management module is provided on the outside of the insulating cover; A first electrical connection component is partially embedded in the insulating cover, and a portion of the first electrical connection component protrudes from the inner and outer sides of the insulating cover, so that the first electrical connection component connects the power distribution module and the battery management module.

21. The electrical box as claimed in claim 20, characterized in that, The battery management module includes a circuit board, which includes a master control area and a slave control area. The master control area is electrically connected to the slave control area through the built-in circuit of the circuit board. Multiple battery cells are connected to the same sampling component, which is connected to the slave control area.

22. The electrical box as claimed in claim 21, characterized in that, The circuit board includes a first connector, and the sampling component includes a board body and a second connector. The board body is provided with a sampling line, which connects the battery cell to the second connector. The first connector and the second connector are plugged into each other.

23. The electrical box as claimed in claim 21, characterized in that, The circuit board includes a first soldering part, and the sampling component includes a board body and a second soldering part disposed on the board body. The board body is provided with a sampling line, which connects the battery cell and the second soldering part. The first soldering part and the second soldering part are soldered to connect the circuit board and the sampling component.

24. The electrical box as described in any one of claims 20 to 23, characterized in that, The electrical box also includes a low-voltage connector, which is directly connected to the battery management module; And / or, the mounting housing further includes a second electrical connection assembly, a portion of which is embedded in the main housing, and at least some of the electrical components of the power distribution module are electrically connected through the second electrical connection assembly.

25. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 19.

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