Battery devices and electrical equipment

Abstract

The present application relates to the technical field of battery production, and in particular to a battery device and an electrical device. The battery device includes a box assembly and a battery control unit, wherein the box assembly is provided with a storage space; and the battery control unit includes a first shell, a second shell and a circuit board assembly, wherein the first shell and the second shell are covered and connected, and the first shell and the second shell together form an installation space; the circuit board assembly includes a circuit board and a plug-in terminal, wherein the circuit board is provided in the installation space, the plug-in terminal is provided through the first shell, and the plug-in terminal and the first shell are an integral injection molding structure. The embodiments of the present application can reduce the probability of condensed water entering the interior of the battery control unit from the gap, thereby protecting the circuit board in the installation space surrounded by the first shell and the second shell, and improving the safety of the battery control unit.

Description

Technical Field

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

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] As new energy technologies become increasingly mature, new energy vehicles and other electrical equipment are gradually entering the public eye. The core technology of new energy vehicles lies in the battery device, and the safety and stability of the battery device directly determine the performance of the entire vehicle.

[0004] The battery device includes a box assembly and a battery control unit. The battery control unit is arranged in the box assembly. The battery control unit includes a circuit board and a first shell and a second shell that are covered and connected. The circuit board is provided with a plug-in terminal. One of the first shell and the second shell is provided with a through hole. The plug-in terminal can pass through the through hole. Condensation water in the box can easily enter the battery control unit, increasing the safety hazard of the battery control unit. Summary of the invention

[0005] In view of the above problems, the present application provides a battery device and an electrical device, which solves the problem in the prior art that condensed water easily enters the battery control unit in the battery device.

[0006] A first aspect of an embodiment of the present application provides a battery device, the battery device comprising:

[0007] A box assembly, wherein a containing space is provided in the box assembly; and

[0008] A battery control unit is arranged in the accommodating space;

[0009] The battery control unit comprises a first housing, a second housing and a circuit board assembly, wherein the first housing and the second housing are connected to each other and the first housing and the second housing together form an installation space;

[0010] The circuit board assembly comprises a circuit board and a plug-in terminal. The circuit board is arranged in the installation space. The plug-in terminal penetrates the first shell and the plug-in terminal and the first shell are an integral injection molding structure.

[0011] The embodiment of the present application arranges the first shell of the battery control unit and the plug-in terminal of the circuit board assembly as an integral injection molding structure. Therefore, after the battery control unit is placed in the accommodating space in the box assembly, since the first shell and the plug-in terminal are an integral injection molding structure, the gap generated when the first shell and the plug-in terminal are a split structure can be eliminated, thereby reducing the probability of condensed water entering the interior of the battery control unit through the gap, thereby protecting the circuit board in the installation space enclosed by the first shell and the second shell, and improving the safety of the battery control unit.

[0012] In some embodiments of the present application, the circuit board assembly further includes a pin, which connects the circuit board and the plug-in terminal, and the pin is electrically connected to the circuit board.

[0013] In the embodiment of the present application, pins are provided and connected to the circuit board and the plug-in terminals respectively, and the pins are electrically connected to the circuit board, so that connection or communication between the circuit board and the external device can be achieved through the pins.

[0014] In some embodiments of the present application, the first shell is arranged above or below the second shell along a first direction, and the first direction is a height direction of the battery control unit.

[0015] In an embodiment of the present application, the first shell is disposed above or below the second shell along a first direction, wherein the first direction is the height direction of the battery control unit. Then, an installation space can be enclosed by the first shell and the second shell in the height direction, thereby reducing the probability of condensed water on the battery case entering the installation space through the gap between the first shell and the second shell.

[0016] In some embodiments of the present application, the connection method between the first shell and the second shell includes one of bonding, welding, clamping and fastener connection.

[0017] In the embodiment of the present application, the connection between the first shell and the second shell can be achieved in one of multiple ways by including one of bonding, welding, clamping and fastener connection as the connection method between the first shell and the second shell.

[0018] In some embodiments of the present application, the first shell is arranged above the second shell along the first direction, the first shell includes a main body portion and a flange portion that are connected to each other, the flange portion extends toward the second shell, and a first clip is provided on the flange portion; a second clip is provided on the second shell, and the first clip and the second clip are connected, wherein the first direction is the height direction of the battery control unit.

[0019] In an embodiment of the present application, a first shell is disposed above a second shell along a first direction, wherein the first shell includes a main body portion and a flange portion that are connected to each other, the flange portion extends toward the second shell, and a first clip is provided on the flange portion; a second clip is provided on the second shell, and the first clip and the second clip are connected, thereby achieving a snap connection between the first shell and the second shell. In addition, since the first shell is disposed above the second shell along the first direction, the probability of condensation water entering the installation space from the first shell can be reduced.

[0020] In some embodiments of the present application, the second shell includes a box body and a connecting portion, and at least a partial installation space is formed in the box body; the connecting portion is connected to one end of the box body where an opening is provided, and a second buckle is provided on the connecting portion.

[0021] In an embodiment of the present application, a box body and a connecting part are provided, wherein at least a partial installation space is formed in the box body, the connecting part is connected to an end of the box body provided with an opening, and a second buckle is provided on the connecting part. Then, a snap-fit ​​structure can be formed by the second buckle on the connecting part and the first buckle on the flange part, thereby reducing the probability of condensed water entering the installation space from the contact surface between the first shell and the second shell.

[0022] In some embodiments of the present application, the box body includes a plurality of first plates connected in sequence, and one end of the plurality of first plates connected in sequence facing the first shell is connected to a connecting part, and a circumferential outer contour line of the connecting part is located on the inner side of the circumferential outer contour line of the plurality of first plates connected in sequence.

[0023] In an embodiment of the present application, the box body includes a plurality of first plates connected in sequence, and one end of the plurality of first plates connected in sequence facing the first shell is connected to the connecting part, and the circumferential outer contour line of the connecting part is located on the inner side of the circumferential outer contour line of the plurality of first plates connected in sequence. The connecting part can be used to reduce the probability of condensation water entering the installation space from the gap between the flange part and the first plate.

[0024] In some embodiments of the present application, the circumferential outer surface of the flange portion is flush with the circumferential outer surface of the box body.

[0025] The embodiments of the present application can reduce the gap between the flange portion and the connecting portion by arranging the circumferential outer surface of the flange portion flush with the circumferential outer surface of the box body, thereby reducing the probability of condensation water entering from the gap between the flange portion and the box body into the area between the flange portion and the connecting portion and then entering into the installation space.

[0026] In some embodiments of the present application, the number of first clips is more than two, and the more than two first clips are arranged at circumferential intervals along the flange portion, and more than two second clips are correspondingly provided on the connecting portion, and each second clip is respectively buckled and connected with the corresponding first clip.

[0027] In the embodiment of the present application, by arranging more than two first buckles at circumferential intervals along the flange portion and correspondingly arranging more than two second buckles on the connecting portion, a buckled connection can be performed at more than two positions, thereby improving the buckling strength between the flange portion and the connecting portion.

[0028] In some embodiments of the present application, one of the first buckle and the second buckle is a protrusion structure, and the other of the first buckle and the second buckle is a groove structure or a hole structure.

[0029] In the embodiment of the present application, one of the first buckle and the second buckle is a protrusion structure, and the other of the first buckle and the second buckle is a groove structure or a hole structure, which can facilitate the processing of the first buckle and the second buckle and improve the buckling efficiency between the first buckle and the second buckle.

[0030] In some embodiments of the present application, the connection method between the pin and the circuit board includes welding or crimping.

[0031] In the embodiments of the present application, the connection method between the plug pin and the circuit board includes welding or crimping, so the plug pin and the circuit board can be connected by welding or crimping, thereby achieving stable fixation between the plug pin and the circuit board.

[0032] A second aspect of the present application provides an electrical device, which includes the battery device mentioned in the above embodiment, and the battery device is used to supply power to the electrical device.

[0033] The electric equipment of the embodiment of the present application uses the battery device mentioned in the above embodiment. Since the performance of the battery device is improved, it is beneficial to improve the working power performance of the electric equipment.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A schematic diagram of the structure of an electrical device provided in some embodiments of the present application;

[0037] Figure 2A schematic diagram of the structure of a battery device provided in some embodiments of the present application;

[0038] Figure 3 for Figure 2 A schematic diagram of the exploded structure of a battery control unit of a battery device shown in ;

[0039] Figure 4 for Figure 3 A local enlarged structural diagram of the battery control unit at position A shown in FIG.

[0040] Figure 5 for Figure 3 The overall structural diagram of the battery control unit of the battery device shown in FIG.

[0041] Figure 6 for Figure 5 A schematic cross-sectional structural diagram of a battery control unit of a battery device along line BB shown in FIG.

[0042] Figure 7 for Figure 6 The local enlarged structural schematic diagram of the battery control unit at C is shown in FIG.

[0043] The reference numerals are as follows:

[0044] 1000, battery device; 2000, electrical equipment; 3000, controller; 4000, motor;

[0045] 100, box assembly; 110, upper box; 120, lower box; 130, accommodating space;

[0046] 200. Battery monomer assembly;

[0047] 300, battery control unit; 310, first housing; 311, main body; 312, flange portion; 313, first buckle; 320, circuit board assembly; 321, plug terminal; 322, plug pin; 323, circuit board; 324, electrical component;

[0048] 330, second housing; 331, box body; 3311, first plate body; 3312, second plate body; 332, connecting portion; 333, second buckle; 340, installation space;

[0049] 400, mounting bracket;

[0050] XX, length direction;

[0051] YY, width direction;

[0052] ZZ, height direction. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0055] 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 clearly and specifically defined.

[0056] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] 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, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial" and "circumferential" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0062] The battery device involved in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The battery device comprising the battery cells, battery devices, etc. involved in the present application can be used.

[0063] In the embodiments of the present application, the electrical equipment using the battery device as the power source may be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, the electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and the spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0064] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery.

[0065] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0066] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0067] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0068] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0069] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0070] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0071] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a second plate.

[0072] As an example, the box body may include a top cover, a frame and a second plate body. The top cover and the second plate body are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0073] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0074] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0075] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0076] The battery device includes a box assembly and a battery control unit, wherein the battery control unit is referred to as CSC (Cell Supervision Circuit). The battery control unit is arranged in the box assembly, and the battery control unit includes a circuit board and a first shell and a second shell that are covered and connected. The circuit board is provided with a plug-in terminal, and one of the first shell and the second shell is provided with a through hole, and the plug-in terminal can pass through the through hole. Condensed water in the box can easily enter the battery control unit, increasing the safety hazard of the battery control unit.

[0077] In order to solve this problem, an embodiment of the present application proposes a battery device, which includes a box assembly and a battery control unit, wherein the box assembly is provided with a accommodating space; the battery control unit is arranged in the accommodating space; the battery control unit includes a first shell, a second shell and a circuit board assembly, the first shell and the second shell are covered and connected, and the first shell and the second shell together form an installation space; the circuit board assembly includes a circuit board and a plug-in terminal, the circuit board is arranged in the installation space, the plug-in terminal penetrates the first shell and is an integral structure with the first shell, then after the battery control unit is placed in the accommodating space in the box assembly, since the first shell and the plug-in terminal are an integral structure, the gap generated when the first shell and the plug-in terminal are a split structure can be eliminated, thereby reducing the probability of condensed water entering the battery control unit through the gap, thereby protecting the circuit board in the installation space surrounded by the first shell and the second shell, and improving the safety of the battery control unit.

[0078] The battery device in the embodiment of the present application can be used on electrical equipment such as vehicles, and can also be installed on energy storage equipment.

[0079] The structure in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0080] A first aspect of an embodiment of the present application provides a battery device 1000, such as Figure 2 As shown, the battery device 1000 includes a box assembly 100, a battery cell assembly 200, a battery control unit 300 and a mounting bracket 400. The box assembly 100 is provided with a housing space 130. The battery cell assembly 200 and the battery control unit 300 are both arranged in the housing space 130, wherein the battery control unit 300 can be mounted on the mounting bracket 400; the battery control unit 300 is arranged in the housing space 130; the battery control unit 300 includes a first shell 310, a second shell 330 and a circuit board assembly 320, the first shell 310 and the second shell 330 are covered and connected, and the first shell 310 and the second shell 330 are covered and connected, and the first shell 310 and the second shell 330 are covered and connected. The shell 310 and the second shell 330 together form an installation space 340; the circuit board assembly 320 includes a circuit board 323 and a plug-in terminal 321, the circuit board 323 is arranged in the installation space 340, the plug-in terminal 321 penetrates the first shell 310 and is an integral structure with the first shell 310; the circuit board assembly 320 includes a circuit board 323 and a plug-in terminal 321, the circuit board 323 is arranged in the installation space 340, the plug-in terminal 321 penetrates the first shell 310 and is an integral structure with the first shell 310, wherein the circuit board 323 can be a printed circuit board or a flexible circuit board.

[0081] It should be noted that if Figure 2As shown, the box assembly 100 includes an upper box 110 and a lower box 120 . The upper box 110 and the lower box 120 enclose a receiving space 130 for placing the battery cell assembly 200 . The battery control unit 300 is also disposed in the receiving space 130 .

[0082] The battery control unit 300 may include a battery management system (BMS) or a battery supervision circuit (CSC). When the battery control unit 300 includes a battery piping system, the battery control unit 300 may be directly connected to each battery cell and monitor the voltage, temperature and other status information of each battery cell to ensure effective management of the battery cells, optimize the charging process through data analysis, extend the battery life, and prevent potential dangers such as overcharging, over-discharging, short circuit and overheating. In addition, the battery control unit 300 may also have a balancing function to balance the power of each battery cell to avoid the overall performance of the battery device 1000 from being reduced due to imbalance between battery cells.

[0083] like Figure 3 As shown, a plurality of electrical components 324 can be arranged on the circuit board 323 to realize the sampling function and communication function of the battery control unit 300. The first housing 310 and the second housing 330 are connected by covering, which means that the first housing 310 and the second housing 330 can be connected by covering to form a relatively closed installation space 340, and the circuit board 323 is placed in the installation space 340. In addition to being waterproof, the installation space 340 also needs to have a dustproof function.

[0084] In the embodiment of the present application, the first shell 310 of the battery control unit 300 and the plug-in terminal 321 of the circuit board assembly 320 are configured as an integrated structure. Therefore, after the battery control unit 300 is placed in the accommodating space 130 in the box assembly 100, since the first shell 310 and the plug-in terminal 321 are an integrated structure, the gap generated when the first shell 310 and the plug-in terminal 321 are a split structure can be eliminated, thereby reducing the probability of condensed water entering the interior of the battery control unit 300 through the gap, thereby protecting the circuit board 323 in the installation space 340 surrounded by the first shell 310 and the second shell 330, thereby improving the safety of the battery control unit 300.

[0085] In addition, the embodiment of the present application can eliminate the gap generated when the first shell 310 and the plug-in terminal 321 are split structures by configuring the first shell 310 and the plug-in terminal 321 of the circuit board assembly 320 as an integrated structure, thereby reducing the probability of dust entering the installation space 340 through the gap, thereby having a dust-proof effect on the circuit board 323 and improving the safety of the battery control unit 300.

[0086] In the embodiment of the present application, the first housing 310 and the plug-in terminal 321 of the circuit board assembly 320 are set as an integrated structure, so that the battery control unit 300 can meet the requirements of IPXXB, where IPXXB is the protection level standard for high-voltage components of electric vehicles, where IP is the abbreviation of International Protection, and XX represents the specific protection level. The first digit or letter represents the dustproof level, and the second digit or letter represents the waterproof level, such as meeting the requirements of IP1XB or IP2XB.

[0087] Optionally, the mounting bracket 400 is disposed in the accommodating space 130, and the mounting bracket 400 can be mounted on the battery cell assembly 200, and the mounting bracket 400 is used to install the battery control unit 300. The battery device 1000 can monitor and manage the state, performance and health of the battery device 1000 in real time through the battery control unit 300.

[0088] In some embodiments of the present application, Figure 3 As shown, the circuit board assembly 320 further includes a pin 322 , the pin 322 connects the circuit board 323 and the plug terminal 321 , and the pin 322 is electrically connected to the circuit board 323 .

[0089] The plug pin 322 is usually a metal part and has a conductive function. The plug terminal 321 is usually an insulating part and has an insulating function. The first shell 310 and the second shell 330 are also usually made of insulating materials and can achieve the insulating function.

[0090] The plug pins 322 here are usually a structure of multiple pins arranged side by side. Considering that there are multiple plug terminals 321, at least one plug pin 322 can be provided in each plug terminal 321.

[0091] In the embodiment of the present application, by providing a plug pin 322 , and connecting the plug pin 322 to the circuit board 323 and the plug terminal 321 respectively, and the plug pin 322 is electrically connected to the circuit board 323 , connection or communication between the circuit board 323 and an external device can be achieved through the plug pin 322 .

[0092] In some embodiments of the present application, the first housing 310 is disposed above or below the second housing 330 along a first direction, where the first direction is the height direction of the battery control unit 300. Figure 3 In the ZZ direction. In addition, Figure 3 The XX direction in FIG. 1 is the length direction of the battery control unit 300. Figure 3 YY in the figure is the width direction of the battery control unit 300 .

[0093] In the embodiment of the present application, the first shell 310 is arranged above or below the second shell 330 along the first direction, wherein the first direction is the height direction of the battery control unit 300. Then, the first shell 310 and the second shell 330 can enclose an installation space 340 in the height direction, thereby reducing the probability of condensed water on the battery case entering the installation space 340 through the gap between the first shell 310 and the second shell 330.

[0094] Optionally, the connection method between the first shell 310 and the second shell 330 includes one of bonding, welding, clamping and fastener connection.

[0095] Among them, the bonding can adopt a double-sided tape structure or solid glue to achieve the connection between the first shell 310 and the second shell 330, the welding can adopt laser welding or brazing process to achieve the connection between the first shell 310 and the second shell 330, the snap connection adopts a snap-fit ​​structure to achieve the sealed connection between the first shell 310 and the second shell 330, and the fastener connection adopts fasteners to achieve the sealed connection between the first shell 310 and the second shell 330. No matter which method is adopted, the connection between the first shell 310 and the second shell 330 can be achieved.

[0096] In the embodiment of the present application, the connection between the first shell 310 and the second shell 330 can be achieved in one of multiple ways by including one of bonding, welding, clamping and fastener connection in the connection method of the first shell 310 and the second shell 330.

[0097] In some embodiments of the present application, Figures 3 to 7 As shown, the first shell 310 is arranged above the second shell 330 along the first direction, and the first shell 310 includes a main body portion 311 and a flange portion 312 that are connected to each other. The flange portion 312 extends toward the second shell 330, and a first clip 313 is provided on the flange portion 312; a second clip 333 is provided on the second shell 330, and the first clip 313 and the second clip 333 are connected, wherein the first direction is the height direction of the battery control unit 300.

[0098] It should be noted that the main body 311 here is a plate-like structure, and the plate-like structure is provided with a plug-in terminal 321 that penetrates the plate-like structure. The flange portion 312 here is connected to the circumferential edge of the main body 311 and is perpendicular to the main body 311. At this time, the main body 311 and the flange portion 312 form a box-like structure that opens downward, and the flange portion 312 is a rectangular ring structure.

[0099] In the embodiment of the present application, the first shell 310 is arranged above the second shell 330 along the first direction, wherein the first shell 310 includes a main body portion 311 and a flange portion 312 that are connected to each other, the flange portion 312 extends toward the second shell 330, and a first clip 313 is provided on the flange portion 312; a second clip 333 is provided on the second shell 330, and the first clip 313 and the second clip 333 are connected, thereby achieving the snap connection between the first shell 310 and the second shell 330. In addition, since the first shell 310 is arranged above the second shell 330 along the first direction, the probability of condensation water entering the installation space 340 from the first shell 310 can be reduced.

[0100] Specifically, the second shell 330 includes a box body 331 and a connecting portion 332 . At least a portion of the installation space 340 is formed in the box body 331 . The connecting portion 332 is connected to an end of the box body 331 where an opening is provided, and a second buckle 333 is provided on the connecting portion 332 .

[0101] It should be noted that if Figure 3 As shown, the opening of the box body 331 is located at the top of the box body 331, that is, the opening of the box body 331 is located at the top of the box body 331 along the ZZ direction, the connecting part 332 is connected to the top of the box body 331, and the connecting part 332 is provided with a second buckle 333. The second buckle 333 can be set on the outer surface of the connecting part 332, or the second buckle 333 can be set on the connecting part 332 and pass through the thickness direction of the connecting part 332.

[0102] Continue to refer to Figure 3 As shown, the connecting portion 332 is a rectangular ring structure, which includes four sections of plates connected in sequence, wherein the lengths of two opposite plates are the same.

[0103] Among them, for a longer plate, the thickness direction of the plate is Figure 3 In the YY direction, for a shorter plate, the thickness direction of the plate is Figure 3 In the XX direction, considering that the shorter connecting portion 332 is relatively short, the embodiment of the present application can be only provided on the longer plate.

[0104] In the embodiment of the present application, a box body 331 and a connecting portion 332 are provided, wherein at least a partial installation space 340 is formed in the box body 331, the connecting portion 332 is connected to an end of the box body 331 having an opening, and a second clip 333 is provided on the connecting portion 332. Then, a clip-on structure can be formed by the second clip 333 on the connecting portion 332 and the first clip 313 on the flange portion 312, thereby reducing the probability of condensed water entering the installation space 340 from the contact surface between the first shell 310 and the second shell 330.

[0105] In some embodiments of the present application, Figure 3 As shown, the box body 331 includes a second plate body 3312 and a plurality of first plate bodies 3311 connected in sequence, wherein one end of the plurality of first plate bodies 3311 connected in sequence facing the first shell 310 is connected to the connecting portion 332, and one end of the plurality of first plate bodies 3311 connected in sequence facing away from the first shell 310 is connected to the second plate body 3312, and the circumferential outer contour line of the connecting portion 332 is located on the inner side of the circumferential outer contour line of the plurality of first plate bodies 3311 connected in sequence.

[0106] It should be noted that one end of the plurality of first plates 3311 connected in sequence facing the first shell 310 is connected to the connection portion 332, that is, the top ends of the plurality of first plates 3311 connected in sequence are connected to the connection portion 332. The circumferential outer contour line of the connection portion 332 is located inside the circumferential outer contour lines of the plurality of first plates 3311 connected in sequence, that is, the circumferential outer contour line of the connection portion 332 and the circumferential outer contour lines of the plurality of first plates 3311 connected in sequence form a U-shaped structure, and the circumferential outer contour line of the connection portion 332 is located inside the circumferential outer contour lines of the plurality of first plates 3311 connected in sequence. In an embodiment of the present application, the box body 331 includes a plurality of first plate bodies 3311 connected in sequence, and the end of the plurality of first plate bodies 3311 connected in sequence facing the first shell 310 is connected to the connecting portion 332, and the circumferential outer contour line of the connecting portion 332 is located on the inner side of the circumferential outer contour line of the plurality of first plate bodies 3311 connected in sequence. The connecting portion 332 can be used to reduce the probability of condensation water entering the installation space 340 from the gap between the flange portion 312 and the first plate body 3311.

[0107] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the circumferential outer surface of the flange portion 312 is flush with the circumferential outer surface of the box body 331 .

[0108] It should be noted that the circumferential outer surface of the flange portion 312 is flush with the circumferential outer surface of the box body 331, which means that each circumferential surface of the flange portion 312 and the corresponding circumferential surface of the box body 331 are located in the same vertical plane. Therefore, the four circumferential surfaces of the flange portion 312 and the four circumferential surfaces of the box body 331 are respectively located in different vertical planes.

[0109] The embodiment of the present application can reduce the gap between the flange portion 312 and the connecting portion 332 by setting the circumferential outer surface of the flange portion 312 flush with the circumferential outer surface of the box body 331, thereby reducing the probability of condensation water entering from the gap between the flange portion 312 and the box body 331 into the area between the flange portion 312 and the connecting portion 332 and then entering the installation space 340.

[0110] Continue to refer to Figure 7 As shown, there is a gap between the flange portion 312 and the first plate body 3311. After water or dust enters through the gap, it needs to pass through the horizontal contact surface between the flange portion 312 and the first plate body 3311, the vertical contact surface between the flange portion 312 and the connecting portion 332, and the upper surface of the connecting portion 332 before it can enter the installation space 340. Therefore, the structure of the present application can reduce the probability of water or dust entering the installation space 340.

[0111] In some embodiments of the present application, the number of first clips 313 is more than two, and the more than two first clips 313 are arranged at circumferential intervals along the flange portion 312, and more than two second clips 333 are correspondingly provided on the connecting portion 332, and each second clip 333 is respectively buckled and connected with the corresponding first clip 313.

[0112] exist Figure 3 In the embodiment, six second buckles 333 are respectively arranged on the longer plate of the connecting portion 332, and the six second buckles 333 are arranged at intervals along the length direction of the plate. The plurality of second buckles 333 may be arranged evenly or unevenly.

[0113] Correspondingly, the number of first clips 313 is twelve in total, and six first clips 313 cooperate with the six second clips 333 on one of the plates, and the other six first clips 313 cooperate with the six second clips 333 on the other plate, so that the flange portion 312 and the connecting portion 332 can be simultaneously fastened from multiple positions, thereby improving the fastening strength between the flange portion 312 and the connecting portion 332, thereby increasing the fastening strength between the first shell 310 and the second shell 330.

[0114] In the embodiment of the present application, by arranging more than two first buckles 313 at circumferential intervals along the flange portion 312 and correspondingly arranging more than two second buckles 333 on the connecting portion 332, a buckling connection can be performed at more than two positions, thereby improving the buckling strength between the flange portion 312 and the connecting portion 332.

[0115] like Figure 3 and Figure 4 As shown, one of the first buckle 313 and the second buckle 333 is a protrusion structure, and the other of the first buckle 313 and the second buckle 333 is a groove structure or a hole structure.

[0116] The convex structure and the concave structure or the hole structure are interlocked by concave-convex matching. Figure 7 The first buckle 313 is a protruding structure, and the second buckle 333 is a hole structure, and the buckling connection is achieved by the engagement between the protruding structure and the hole structure.

[0117] In the embodiment of the present application, one of the first buckle 313 and the second buckle 333 is a protrusion structure, and the other of the first buckle 313 and the second buckle 333 is a groove structure or a hole structure, so that the processing of the first buckle 313 and the second buckle 333 can be facilitated, and the buckling efficiency between the first buckle 313 and the second buckle 333 can be improved. In addition, this buckling method between the first buckle 313 and the second buckle 333 can reduce the probability of the buckle being exposed, and after the assembly is completed, it can be achieved that there is no gap for the battery control unit 300 to directly enter the installation space 340.

[0118] In addition, this structure of the battery control unit 300 does not require other locking and fixing structures, which can improve the efficiency of assembling the battery control unit and the efficiency of fixing the battery control unit on the mounting bracket.

[0119] In some embodiments of the present application, the connection method between the pin 322 and the circuit board 323 includes welding or crimping.

[0120] It should be noted that the pin 322 and the circuit board 323 can be connected by welding or crimping, so that the pin 322 and the circuit board 323 form an integrated structure, thereby achieving a direct connection between the circuit board 323 and the plug-in terminal 321.

[0121] In the embodiment of the present application, the connection method between the plug pin 322 and the circuit board 323 includes welding or crimping, so that the plug pin 322 and the circuit board 323 can be connected by welding or crimping, thereby achieving stable fixation between the plug pin 322 and the circuit board 323.

[0122] In some embodiments of the present application, the plug terminal 321 and the first housing 310 are an integral injection-molded structure.

[0123] The one-piece injection molding structure mentioned here can be realized by one-piece injection molding process or one-piece vacuum forming process. There is no need to limit the manufacturing process between the plug-in terminal 321 and the first shell 310. It only needs to be able to make the plug-in terminal 321 and the first shell 310 into an integrated structure.

[0124] In the embodiment of the present application, the plug-in terminal 321 and the first shell 310 are configured as an integral injection molding structure. The plug-in terminal 321 and the first shell 310 can be formed into an integral structure through an integral injection molding process, which is low in cost and easy to implement.

[0125] Optionally, a sealing structure may be provided between the first shell 310 and the second shell 330 , for example, a sealing ring or a sealing surface structure may be provided between the first shell 310 and the second shell 330 to achieve a sealed connection between the first shell 310 and the second shell 330 .

[0126] A second aspect of the present application provides an electric device 2000 . The electric device 2000 includes the battery device 1000 mentioned in the above embodiment. The battery device 1000 is used to supply power to the electric device 2000 .

[0127] The electric device 2000 is provided with a battery device 1000, and the battery device 1000 can be provided at the bottom, head, or tail of the electric device 2000. The battery device 1000 can be used to power the electric device 2000, for example, the battery device 1000 can be used as an operating power source for the electric device 2000. The electric device 2000 can also include a controller 3000 and a motor 4000, and the controller 3000 is used to control the battery device 1000 to power the motor 4000, for example, to meet the power requirements of the electric device 2000 when starting, navigating, and driving.

[0128] The electric device 2000 of the embodiment of the present application uses the battery device 1000 mentioned in the above embodiment. Since the performance of the battery device 1000 is improved, it is beneficial to improve the working power performance of the electric device 2000.

[0129] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0130] The first aspect of the embodiment of the present application proposes a battery device 1000, which includes a box assembly 100 and a battery control unit 300, and the battery control unit 300 is arranged in an accommodating space 130; the box assembly 100 is provided with an accommodating space 130; the battery control unit 300 includes a first shell 310, a second shell 330 and a circuit board assembly 320, the first shell 310 and the second shell 330 are covered and connected, and the first shell 310 and the second shell 330 are enclosed to form an installation space 340; the circuit board assembly 320 includes a circuit board 323 and a plug-in terminal 321, the circuit board 323 is arranged in the installation space 340, the plug-in terminal 321 is arranged through the first shell 310 and is an integral structure with the first shell 310; the circuit board assembly 320 includes a circuit board 323 and a plug-in terminal 321, the circuit board 323 is arranged in the installation space 340, and the plug-in terminal 321 is arranged through the first shell 310 and is an integral structure with the first shell 310. Further, the circuit board assembly 320 further includes a pin 322, the pin 322 connects the circuit board 323 and the plug terminal 321, and the pin 322 is electrically connected to the circuit board 323. Further, the first shell 310 is arranged above or below the second shell 330 along the first direction, and the first direction is the height direction of the battery control unit 300. Further, the connection method between the first shell 310 and the second shell 330 includes one of bonding, welding, clamping and fastener connection. Further, the first shell 310 is arranged above the second shell 330 along the first direction, and the first shell 310 includes a main body 311 and a flange 312 connected to each other, the flange 312 extends toward the second shell 330, and a first buckle 313 is provided on the flange 312; a second buckle 333 is provided on the second shell 330, and the first buckle 313 and the second buckle 333 are connected, wherein the first direction is the height direction of the battery control unit 300. Further, the second shell 330 includes a box body 331, in which at least a portion of the installation space 340 is formed; a connecting portion 332, which is connected to an end of the box body 331 with an opening, and a second buckle 333 is provided on the connecting portion 332. Further, the box body 331 includes a plurality of first plates 3311 connected in sequence, and one end of the plurality of first plates 3311 connected in sequence facing the first shell 310 is connected to the connecting portion 332, and the circumferential outer contour line of the connecting portion 332 is located inside the circumferential outer contour line of the plurality of first plates 3311 connected in sequence. Further, the circumferential outer surface of the flange portion 312 is arranged flush with the circumferential outer surface of the box body 331. Furthermore, the number of the first buckles 313 is more than two, and the more than two first buckles 313 are arranged at intervals along the circumference of the flange portion 312, and the connecting portion 332 is correspondingly provided with more than two second buckles 333, and each second buckle 333 is respectively buckled and connected with the corresponding first buckle 313.Further, one of the first buckle 313 and the second buckle 333 is a protrusion structure, and the other of the first buckle 313 and the second buckle 333 is a groove structure or a hole structure. Further, the connection method between the pin 322 and the circuit board 323 includes welding or crimping. Further, the plug terminal 321 and the first housing 310 are an integral injection molding structure.

[0131] A second aspect of the present application provides an electric device 2000 . The electric device 2000 includes the battery device 1000 mentioned in the above embodiment. The battery device 1000 is used to supply power to the electric device 2000 .

[0132] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery device, characterized in that: The battery device comprises: A box assembly, wherein a containing space is provided in the box assembly; and A battery control unit, the battery control unit is arranged in the accommodating space; The battery control unit comprises a first shell, a second shell and a circuit board assembly, wherein the first shell and the second shell are connected to each other and the first shell and the second shell together form an installation space; The circuit board assembly comprises a circuit board and a plug-in terminal, the circuit board is arranged in the installation space, the plug-in terminal is arranged through the first housing, and the plug-in terminal and the first housing are an integral injection molding structure; The first shell comprises a main body portion and a flange portion connected to each other, the flange portion extends toward the second shell, and a first buckle is provided on the flange portion; The second shell is provided with a second buckle, the first buckle and the second buckle are connected, one of the first buckle and the second buckle is a protrusion structure, and the other of the first buckle and the second buckle is a groove structure or a hole structure; the protrusion structure and the groove structure or the hole structure are mutually engaged through concave-convex matching.

2. The battery device according to claim 1, characterized in that The circuit board assembly also includes a pin, which connects the circuit board and the plug-in terminal, and the pin is electrically connected to the circuit board.

3. The battery device according to claim 2, characterized in that: The first shell is arranged above or below the second shell along a first direction, and the first direction is a height direction of the battery control unit.

4. The battery device according to claim 2, characterized in that: The connection method between the first shell and the second shell includes one of bonding, welding, clamping and fastener connection.

5. The battery device according to claim 4, characterized in that: The first shell is arranged above the second shell along a first direction, wherein the first direction is a height direction of the battery control unit.

6. The battery device according to claim 5, characterized in that The second housing comprises: A box body, wherein at least a portion of the installation space is formed in the box body; A connecting portion is connected to an end of the box body having an opening, and the connecting portion is provided with the second buckle.

7. The battery device according to claim 6, characterized in that: The box body includes a plurality of first plates connected in sequence, wherein one end of the plurality of first plates connected in sequence facing the first shell is connected to the connecting portion, and the circumferential outer contour line of the connecting portion is located on the inner side of the circumferential outer contour line of the plurality of first plates connected in sequence.

8. The battery device according to claim 6, characterized in that: The circumferential outer surface of the flange portion is flush with the circumferential outer surface of the box body.

9. The battery device according to claim 6, characterized in that: The number of the first buckles is more than two, and the more than two first buckles are arranged at intervals along the circumference of the flange portion, and the connecting portion is correspondingly provided with more than two second buckles, and each of the second buckles is respectively buckled and connected with the corresponding first buckle.

10. The battery device according to any one of claims 2 to 9, characterized in that: The connection method between the pin and the circuit board includes welding or crimping.

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

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