Battery device and electric equipment

Abstract

The embodiment of the utility model provides a battery device and electric equipment, and relates to the technical field of batteries. The battery device comprises a box body, a battery monomer, a strong current control assembly and a weak current control assembly, and the battery monomer, the strong current control assembly and the weak current control assembly are all mounted in the box body; the strong current control assembly comprises a first wall, the weak current control assembly comprises a shell and a circuit board installed in the shell, and the shell is installed on the first wall. According to the weak current control assembly, the shell of the weak current control assembly is directly installed on the first wall of the strong current control assembly, the first wall serves as a supporting and installing structure of the shell, a supporting structure of the shell does not need to be configured, and therefore the installing space and cost of the weak current control assembly in the assembling process can be reduced.

Description

Technical Field

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

[0002] Battery devices are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] Battery devices include low-voltage control components. During assembly, the housing of the low-voltage control components needs to be mounted on a support structure for support and fixation. The support structure occupies a certain amount of space inside the battery device and increases production costs. Therefore, how to reduce the assembly space and cost of low-voltage control components is a research direction in battery technology. Utility Model Content

[0004] This application provides a battery device and an electrical appliance that can reduce the assembly space and cost of low-voltage control components.

[0005] In a first aspect, embodiments of this application provide a battery device, including a housing, a battery cell, a high-voltage control component, and a low-voltage control component, wherein the battery cell, the high-voltage control component, and the low-voltage control component are all installed in the housing; the high-voltage control component includes a housing with a first wall, and the low-voltage control component includes a casing and a circuit board installed in the casing, wherein the casing is installed on the first wall.

[0006] By adopting the above technical solution, this application directly installs the housing of the low-voltage control component onto the first wall of the high-voltage control component. The first wall serves as the support and installation structure of the housing, eliminating the need for a separate support structure for the housing. Therefore, it can reduce the installation space and cost of the low-voltage control component during assembly.

[0007] In some embodiments of this application, the housing and the first wall form a first receiving cavity for accommodating the circuit board.

[0008] By adopting the above technical solution, the shell and the first wall together form the first receiving cavity, which can correspondingly omit part of the shell structure, further reducing the space occupied by the shell and the production cost.

[0009] In some embodiments of this application, the housing includes a second wall and a first sidewall circumferentially connected to the second wall, the first wall, the first sidewall, and the second wall enclosing the first receiving cavity.

[0010] By adopting the above technical solution, the housing is designed to include a second wall and a first side wall, which together form a receiving groove. During assembly, the circuit board is first installed in the receiving groove, and then the housing is directly installed on the first wall to complete the assembly of the housing. The receiving groove facilitates the assembly of the housing and the circuit board, and the first side wall facilitates the connection between the housing and the first wall. Moreover, the wall structure opposite to the second wall is omitted.

[0011] In some embodiments of this application, at least one of the first sidewalls is provided with a connecting edge on the side opposite to the second wall, the connecting edge extending in a direction away from the first receiving cavity, and the connecting edge being connected to the first wall.

[0012] The above technical solution provides a connecting edge on the first sidewall, which has a larger connecting surface, thus facilitating the connection between the first sidewall and the first wall and improving the connection stability between the two.

[0013] In some embodiments of this application, the second wall is provided with a wiring socket.

[0014] By adopting the above technical solution, a wiring socket is provided on the second wall away from the high-voltage control component, which can facilitate the wiring connection of the circuit board inside the housing, while reducing the possibility of mutual interference between the wiring of the high-voltage control component and the wiring of the housing.

[0015] In some embodiments of this application, the housing is located outside the box.

[0016] By adopting the above technical solution, it is convenient to install the shell onto the first wall, thereby improving the installation efficiency of the shell and the first wall.

[0017] In some embodiments of this application, the housing and the first wall are detachably connected.

[0018] By adopting the above technical solution, the housing and the first wall are designed to be detachably connected, which facilitates the connection between the housing and the first wall and also facilitates the subsequent disassembly and maintenance of the low-voltage control components.

[0019] In some embodiments of this application, the housing is provided with a first connection hole, the first wall is provided with a second connection hole, the first connection hole and the second connection hole are connected by a connector passing through both, and the housing and the first wall are detachably connected by the connector.

[0020] The above technical solution utilizes the first connecting hole, the second connecting hole, and the connector for detachable connection, resulting in a simple structure that is easy to implement.

[0021] In some embodiments of this application, the first connecting hole is a through hole and the second connecting hole is a blind hole.

[0022] By adopting the above technical solution, the second connection hole is designed as a blind hole, so that the connector will not extend into the high-voltage control component, reducing the possibility of short circuit between the connector and the electrical components in the high-voltage control component. Moreover, the blind hole can also block the risk of solid particles and liquids entering the high-voltage control component, thereby improving the protection level of the high-voltage control component.

[0023] In some embodiments of this application, a first connecting sleeve is installed in the first connecting hole, the outer wall of the first connecting sleeve is connected to the inner wall of the first connecting hole, and the inner wall of the first connecting sleeve is connected to the connector; and / or, a second connecting sleeve is installed in the second connecting hole, the outer wall of the second connecting sleeve is connected to the inner wall of the second connecting hole, and the inner wall of the second connecting sleeve is connected to the connector.

[0024] By adopting the above technical solution, a first connecting sleeve is installed in the first connecting hole to mate with the connector, which reduces the wear on the hole wall of the first connecting hole during assembly with the connector and also reduces the possibility of subsequent cracking and deformation of the first connecting hole. Similarly, a second connecting sleeve is installed in the second connecting hole to mate with the connector, which reduces the wear on the hole wall of the second connecting hole during assembly with the connector and also reduces the possibility of subsequent cracking and deformation of the second connecting hole.

[0025] In some embodiments of this application, the first wall is provided with an annular flange surrounding the second connecting hole. The annular flange is used to support the housing. The portion of the first wall other than the annular flange forms a gap with the housing along a first direction, which is the arrangement direction of the housing to the first wall.

[0026] By adopting the above technical solution, the shell is supported by an annular flange. The presence of the annular flange makes it convenient to place the shell on the first wall, and the part of the first wall other than the annular flange forms a gap with the shell, which improves the heat dissipation effect of both and reduces the vibration transmission between them.

[0027] In some embodiments of this application, the high-voltage control component includes a bottom wall, a top wall, and a second side wall. The bottom wall is connected to the housing, and the second side wall is connected between the bottom wall and the top wall. The bottom wall, the top wall, and the second side wall form a second receiving cavity, and the first wall is the top wall or part of the second side wall.

[0028] By adopting the above technical solution, the first wall is designed as the top wall of the high-voltage control component or the second side wall, which makes it easier to install the housing compared to designing the first wall as the bottom wall.

[0029] Secondly, embodiments of this application provide an electrical device including the aforementioned battery device, which is used to provide electrical energy. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0031] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0032] Figure 2 This is a partial schematic diagram of a battery device provided in some embodiments of this application;

[0033] Figure 3 A schematic diagram of the structure of a first type of low-voltage control component and a high-voltage control component provided in some embodiments of this application from a first perspective;

[0034] Figure 4 A schematic diagram of the structure of a first type of low-voltage control component and a high-voltage control component provided in some embodiments of this application from a second perspective;

[0035] Figure 5 A schematic diagram of the structure of a first type of low-voltage control component and a high-voltage control component provided in some embodiments of this application from a third-view perspective;

[0036] Figure 6 for Figure 5 AA section diagram;

[0037] Figure 7 for Figure 6 Enlarged view of part A;

[0038] Figure 8 This is a schematic diagram of the structure of a low-voltage control component provided in some embodiments of this application;

[0039] Figure 9 This is a schematic diagram of the structure of a second type of low-voltage control component and a high-voltage control component provided in some embodiments of this application.

[0040] The reference numerals in the accompanying drawings for the specific embodiments are as follows:

[0041] 1000, vehicles;

[0042] 100. Battery device;

[0043] 10. Box body; 11. First part; 12. Second part;

[0044] 20. Battery cell;

[0045] 30. High-voltage control assembly; 31. Housing; 311. First wall; 3111. Second connecting hole; 3112. Second connecting sleeve; 3113. Annular flange; 312. Bottom wall; 313. Top wall; 314. Second side wall;

[0046] 40. Low-voltage control component; 41. Housing; 411. Second wall; 4111. Wiring socket; 412. First side wall; 4121. Connecting edge; 41211. First connecting hole; 41212. First connecting sleeve; 413. Receiving groove; 42. Circuit board; 421. Control module; 43. Connector;

[0047] 200. Controller;

[0048] 300. Motor;

[0049] X, the first direction. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0052] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, H and / or B can represent: H existing alone, H and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0055] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0056] In this application, "multiple" means two or more (including two).

[0057] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0058] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0059] The battery cell mentioned in the embodiments of this application may include an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The battery cell mainly relies on the movement of metal ions between the positive and negative electrode plates to operate. The positive electrode includes a positive current collector and a positive active material layer, with the positive active material layer coated on the surface of the positive current collector. The positive current collector includes a positive electrode coating area and a positive electrode tab connected to the positive electrode coating area. The positive electrode coating area is coated with the positive active material layer, while the positive electrode tab is not coated with the positive active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes positive active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer being coated on the surface of the negative electrode current collector. The negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area. The negative electrode coating area is coated with the negative electrode active material layer, while the negative electrode tab is not coated with the negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes negative electrode active material, which can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0060] Currently, battery devices are being used more and more widely. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As the application areas of battery devices continue to expand, the market demand is also constantly increasing.

[0061] A battery pack typically includes a housing and, within the housing, individual battery cells, high-voltage control components, and low-voltage control components. The housing withstands external impacts and pressures, protecting the internal battery cells, high-voltage control components, and low-voltage control components from physical damage and reducing the risk of damage due to collisions or drops. The high-voltage control components can be high-voltage boxes. The low-voltage control components can be BMUs (Battery Management Units) or CSCs (Cellular Monitoring Circuits), which include a housing and a circuit board mounted within the housing.

[0062] When assembling the low-voltage control components into the enclosure, a support structure such as a bracket is required. This support structure is installed on the crossbeams inside the enclosure, and then the housing of the low-voltage control components is installed onto the support structure. Additionally, a certain installation gap needs to be maintained between the low-voltage and high-voltage control components after installation. This assembly method occupies a significant amount of space inside the enclosure, and configuring the support structure also incurs certain production costs.

[0063] Therefore, how to optimize the assembly space and cost of low-voltage control components is an important issue in the research and development of battery devices and related components.

[0064] In view of this, this application provides a technical solution to solve the above-mentioned technical problems by directly installing the low-voltage control component on the high-voltage control component.

[0065] The battery cells described in the embodiments of this application are applicable to batteries and electrical devices that use batteries.

[0066] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0067] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0068] Combined with appendix Figure 1 As shown, vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, the battery device 100 can serve as the operating power source for vehicle 1000. Vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of vehicle 1000 during starting, navigation, and driving.

[0069] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0070] Combined with appendix Figure 2-5As shown, this application provides a battery device 100, including a housing 10, a battery cell 20, a high-voltage control component 30, and a low-voltage control component 40. The battery cell 20, the high-voltage control component 30, and the low-voltage control component 40 are all installed inside the housing 10. The high-voltage control component 30 includes a first wall 311, and the low-voltage control component 40 includes a housing 41 and a circuit board 42 installed inside the housing 41. The housing 41 is installed on the first wall 311.

[0071] The housing 10 provides a space for housing the battery cell 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first part 11 and a second part 12, which overlap each other, and together define a space for housing the battery cell 20. Both the first part 11 and the second part 12 can be hollow structures with one open end, with the second part 12 covering the open side of the first part 11 so that the first part 11 and the second part 12 together define the space; alternatively, the second part 12 can be a plate-like structure, and the first part 11 can be a hollow structure with one open side, with the open side of the second part 12 covering the open side of the first part 11. Of course, the housing 10 formed by the first part 11 and the second part 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0072] Each 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 to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0073] There can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, multiple battery cells 20 can first be connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules can be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing 10. The battery device 100 may also include other structures; for example, the battery device 100 may also include a busbar (not shown in the figure) for realizing the electrical connection between the multiple battery cells 20.

[0074] Combined with appendix Figure 8 As shown, the low-voltage control component 40 in this embodiment can be a battery management system (BMU) or a CSC (cell monitoring circuit). The low-voltage control component 40 includes a housing 41 and a circuit board 42 located inside the housing 41. A control module 421 is installed on the circuit board 42.

[0075] When the low-voltage control component 40 is part of the battery piping system, it can be directly connected to each individual battery cell 20 and monitor the voltage, temperature, and other status information of each cell to ensure effective battery management. Data analysis optimizes the charging process, extends battery life, and prevents potential hazards such as overcharging, over-discharging, short circuits, and overheating. Furthermore, the low-voltage control component 40 has a balancing function to balance the charge of each battery cell, preventing overall performance degradation due to imbalances between cells. The low-voltage control component 40 can also be electrically connected to the high-voltage control component 30, using control signals to instruct the high-voltage control component 30 when to cut off current or connect power, thus achieving safer operation.

[0076] The high-voltage control component 30 can be a high-voltage box in the battery device 100. The high-voltage control component 30 includes a housing, and at least one of the following is installed inside the housing: a high-voltage connector, a circuit breaker / fuse, a relay, and a control circuit (not shown in the figure). The high-voltage control component 30 can be directly connected to the positive and negative terminals of the entire battery pack (i.e., a combination of multiple battery cells 20). The high-voltage control component 30 can control the power flow of the entire battery pack and disconnect or connect the high-voltage circuit.

[0077] It's important to clarify that "high-voltage electricity" generally refers to electrical systems with high voltage and high power, primarily used for transmitting and using electrical energy. Voltages exceeding 50V or 60V are generally considered high-voltage. In some applications, 300V or higher is considered high voltage. "Low-voltage electricity" refers to electronic signal systems with lower voltage and lower power, primarily used for information transmission and control. Low-voltage electricity typically refers to voltages below 50V, often falling within the range of 12V, 24V, or 5V.

[0078] It should be noted that the "high voltage" mentioned above generally refers to a battery device 100 whose operating voltage exceeds a certain threshold. Specifically, this threshold can vary depending on the application, but generally, voltages above 60V are often classified as high-voltage batteries. When the electrical equipment is a vehicle 1000, high voltage usually refers to between 200V and 800V, or even higher.

[0079] Unlike related technologies that use brackets or other support structures to install the housing 41 of the low-voltage control component 40, this embodiment directly installs the low-voltage control component 40 on the first wall 311 of the high-voltage control component 30. The first wall 311 serves as the support and installation structure for the housing 41, eliminating the need for a separate support structure for the housing 41. This reduces the installation space and cost of the low-voltage control component 40 during assembly.

[0080] Combined with appendix Figure 3 Appendix Figure 4 and appendix Figure 8As shown, in some examples, optionally, the housing 41 and the first wall 311 form a first receiving cavity for receiving the circuit board 42.

[0081] It should be noted that, since the receiving groove 413 and the first wall 311 enclose the first receiving cavity, the first receiving cavity is not shown in the accompanying drawings of this embodiment, since the receiving groove 413 and the first wall 311 have already been shown. The first receiving cavity can be a sealed or unsealed cavity structure. The first receiving cavity has multiple walls, the first wall 311 has at least one wall in the first receiving cavity, and the housing 41 has the remaining walls of the first receiving cavity.

[0082] For example, when the number of walls in the first receiving cavity is six, the first wall 311 can be one of the six walls, or more walls can be provided on the first wall 311. Correspondingly, the number of walls in the housing 41 is the remaining six walls.

[0083] The shape of the first receiving cavity is not limited, for example, it can be a cuboid, cube, sphere, irregular shape, etc., which will not be listed one by one in this embodiment.

[0084] Unlike related technologies where the shell 41 has its own receiving cavity, this embodiment uses the shell 41 and the first wall 311 to jointly form the first receiving cavity, which can correspondingly omit part of the structure of the shell 41, further reducing the space occupied by the shell 41 and the production cost.

[0085] Combined with appendix Figure 8 As shown, in some examples, optionally, the housing 41 includes a second wall 411 and a first side wall 412 connected to the second wall 411, the first side wall 412 being connected to the first wall 311, the first wall 311, the first side wall 412 and the second wall 411 enclosing a first receiving cavity.

[0086] The second wall 411 can be arranged opposite to the first wall 311 along the first direction X, where the first direction X is the arrangement direction of the housing 41 to the first wall 311. The second wall 411 and the first side wall 412 form a receiving groove 413. The shape of the second wall 411 can be a rectangle as shown in the figure, or it can be a circle, an ellipse, a polygon, a triangle, etc. This embodiment will not list them all.

[0087] The housing 41 is designed to include a second wall 411 and a first side wall 412, which together form a receiving groove 413. During assembly, the circuit board 42 is first installed in the receiving groove 413, and then the housing 41 is directly installed onto the first wall 311, completing the assembly of the housing 41. The receiving groove 413 facilitates the assembly of the housing 41 and the circuit board 42, and the first side wall 412 facilitates the connection between the housing 41 and the first wall 311, while eliminating the need for a wall structure opposite to the second wall 411.

[0088] Of course, the structural form of the housing 41 in this embodiment is not limited to this. For example, the housing 41 may only include a second wall 411, and a first side wall 412 may be integrally formed on the first wall 311, with the first wall 311 and the first side wall 412 forming a receiving groove 413. Another example is that a portion of the first side wall 412 may be formed on the second wall 411, and another portion of the first side wall 412 may be formed on the first wall 311. The first wall 311, the second wall 411, the portion of the first side wall 412 on the second wall 411, and the other portion of the first side wall 412 on the first wall 311 together form the first receiving cavity of this embodiment.

[0089] Combined with appendix Figure 6 and attached Figure 7 As shown, in some examples, optionally, the first sidewall 412 has a connecting edge 4121 on the side away from the second wall 411. The connecting edge 4121 extends in a direction away from the receiving groove 413 and is connected to the first wall 311.

[0090] The first sidewall 412 has a connecting edge 4121 on the side away from the second wall 411. The connecting edge 4121 intersects with the first wall 311 (including the case of being perpendicular). The connecting edge 4121 can be arranged around the opening of the receiving groove 413.

[0091] The connection method between the connecting edge 4121 and the first wall 311 can be any connection method such as welding, bonding, plugging, bolting, etc., as long as it can fix the shell 41 to the first wall 311. This embodiment will not list too many of these methods.

[0092] The connecting edge 4121 gives the first sidewall 412 a larger connecting surface facing the first wall 311, which makes it easier to connect the first sidewall 412 and the first wall 311 and can improve the connection stability between the two.

[0093] Combined with appendix Figure 3 and attached Figure 5 As shown, in some examples, the second wall 411 is optionally provided with a wiring socket 4111.

[0094] The wiring socket 4111 is used to insert a connecting wire (not shown in the figure), which can be a connecting wire for connecting the circuit board 42 of the low-voltage control component 40 and the battery cell 20 / electrical equipment.

[0095] Accordingly, the circuit board 42 of this embodiment is provided with a terminal block (not shown in the figure). The terminal block is disposed in the wiring hole, and the connecting wire can be plugged into the terminal block to realize the electrical connection with the circuit board 42.

[0096] Compared to opening a wiring socket 4111 on the first sidewall 412, the second sidewall 314 has a larger area, making it easier to open a wiring socket 4111. Moreover, the second wall 411 is away from the high-voltage control component 30. Therefore, opening a wiring socket 4111 on the second wall 411 can facilitate the wiring connection of the circuit board 42 inside the housing 41, while reducing the possibility of interference between the wiring of the high-voltage control component 30 and the wiring of the housing 41.

[0097] In some examples, the housing 41 is optionally located outside the box 31.

[0098] When the housing 41 is located outside the high-voltage control component 30, the housing 41 can be directly installed on the first wall 311. Compared with the method where the housing 41 is located inside the high-voltage control component 30, it is more convenient to connect the housing 41 to the first wall 311.

[0099] In some examples, the housing 41 and the first wall 311 are optionally detachably connected.

[0100] When the housing 41 of this embodiment includes the second wall 411 and the first side wall 412 as described above, the first side wall 412 is detachably connected to the first wall 311.

[0101] A detachable connection means that after the first sidewall 412 of the housing 41 is installed onto the first wall 311, it can be removed from the first wall 311 without damaging the structure of the first wall 311 and the housing 41. The detachable connection can be achieved through snap-fit, bolt connection, plug-in connection, etc., which will not be listed in this embodiment.

[0102] The housing 41 and the first wall 311 are designed to be detachably connected, which facilitates the connection between the housing 41 and the first wall 311, and also makes it easy to remove the low-voltage control component 40 from the first wall 311 for maintenance.

[0103] Combined again with the appendix Figure 6 and attached Figure 7 As shown, in some examples, optionally, the housing 41 is provided with a first connection hole 41211, and the first wall 311 is provided with a second connection hole 3111. The first connection hole 41211 and the second connection hole 3111 are connected by a connector 43 passing through them. The housing 41 and the first wall 311 are detachably connected by the connector 43.

[0104] The connector 43 can be a plug-in component, a bolt, or a detachable riveting component. When the connector 43 is a plug-in component, the first connecting hole 41211 and the second connecting hole 3111 can be plug holes with smooth walls. When the connector 43 is a bolt, the first connecting hole 41211 and the second connecting hole 3111 can be threaded holes with threads on the walls. When the connector 43 is a detachable riveting component, the first connecting hole 41211 and the second connecting hole 3111 can be riveting holes with smooth walls.

[0105] During assembly, first fix the housing 41 to the first wall 311, then align the first connecting hole 41211 and the second connecting hole 3111, and use the connector 43 to connect the first connecting hole 41211 and the second connecting hole 3111. When it is necessary to remove the housing 41, simply contact the connection between the connector 43 and the second connecting hole 3111. The operation is simple and convenient for disassembly.

[0106] In some examples, the first connecting hole 41211 is optionally a through hole, and the second connecting hole 3111 is a blind hole.

[0107] A through hole refers to a hole structure that penetrates two surfaces of the first sidewall 412 in opposite directions along the first direction X, through which the connector 43 can pass. A blind hole refers to a hole structure that penetrates only the surface of the first wall 311 facing the housing 41.

[0108] The second connection hole 3111 is designed as a blind hole, so that the connector 43 will not extend into the high-voltage control component 30, reducing the possibility of short circuit between the connector 43 and the electrical components in the high-voltage control component 30. In addition, the blind hole can also block the risk of solid particles and liquids entering the high-voltage control component 30, thereby improving the protection level of the high-voltage control component 30.

[0109] In some examples, optionally, a first connecting sleeve 41212 is installed in the first connecting hole 41211, the outer wall of the first connecting sleeve 41212 is connected to the inner wall of the first connecting hole 41211, and the inner wall of the first connecting sleeve 41212 is connected to the connector 43; and / or, a second connecting sleeve 3112 is installed in the second connecting hole 3111, the outer wall of the second connecting sleeve 3112 is connected to the inner wall of the second connecting hole 3111, and the inner wall of the second connecting sleeve 3112 is connected to the connector 43.

[0110] The above technical solutions include three implementation methods. The first method involves installing a first connecting sleeve 41212 inside the first connecting hole 41211, while the second connecting hole 3111 does not contain a second connecting sleeve 3112. The second method involves not having a first connecting sleeve 41212 inside the first connecting hole 41211, but having a second connecting sleeve 3112 inside the second connecting hole 3111. The third method involves having both a first connecting sleeve 41212 inside the first connecting hole 41211 and a second connecting sleeve 3112 inside the second connecting hole 3111.

[0111] The first connecting sleeve 41212 can be fixedly connected to the wall of the first connecting hole 41211 by means of snap-fit, threaded connection, heat fusion connection, etc., and the second connecting sleeve 3112 can be fixedly connected to the wall of the second connecting hole 3111 by means of snap-fit, threaded connection, heat fusion connection, etc.

[0112] The reason for configuring the first connecting sleeve 41212 and the second connecting sleeve 3112 is that the housing 41 and the first wall 311 are made of insulating materials such as plastic throughout, which have poor structural strength and rigidity. During the disassembly and assembly of the connector 43, the first connecting hole 41211 and the second connecting hole 3111 are prone to wear and cracking at the hole walls, which affects the connection stability of the housing 41 and the first wall 311.

[0113] Therefore, this embodiment is equipped with a first connecting sleeve 41212 and a second connecting sleeve 3112. The first connecting sleeve 41212 and the second connecting sleeve 3112 can be cylindrical and made of metal (such as stainless steel, aluminum alloy, etc.).

[0114] A first connecting sleeve 41212 is installed in the first connecting hole 41211 to mate with the connector 43, which reduces the wear on the hole wall of the first connecting hole 41211 during assembly with the connector 43, and also reduces the possibility of subsequent cracking and deformation of the first connecting hole 41211. Similarly, a second connecting sleeve 3112 is installed in the second connecting hole 3111 to mate with the connector 43, which reduces the wear on the hole wall of the second connecting hole 3111 during assembly with the connector 43, and also reduces the possibility of subsequent cracking and deformation of the second connecting hole 3111.

[0115] In some examples, the first wall 311 is optionally provided with an annular flange 3113 surrounding the second connecting hole 3111. The annular flange 3113 is used to support the housing 41. The portion of the first wall 311 other than the annular flange 3113 forms a gap with the housing 41 along a first direction X, where the first direction X is the arrangement direction of the housing 41 to the first wall 311.

[0116] The protrusion height of the annular flange 3113 can be 1mm-20mm, specifically 1mm, 5mm, 10mm, 15mm and 20mm, etc. The specific height can be determined according to the size of the housing 41 and the high-voltage control component 30.

[0117] The number of annular flanges 3113 corresponds one-to-one with the number of second connecting holes 3111. For example, when there are 4 second connecting holes 3111, the number of annular flanges 3113 is also four.

[0118] The housing 41 is supported by an annular flange 3113. The presence of the annular flange 3113 provides more installation methods and angles, making it easier to place the housing 41 on the first wall 311.

[0119] Moreover, the presence of the annular flange 3113 allows the housing 41 to have a certain installation height on the first wall 311. The part of the first wall 311 other than the annular flange 3113 can form a certain gap with the housing 41. The width of the gap is approximately equal to the protrusion height of the annular flange 3113. The gap between the housing 41 and the first wall 311 can improve the heat dissipation effect of both and reduce the vibration transmission between them.

[0120] Combined again with the appendix Figure 3-5 As shown, in some examples, optionally, the box 31 includes a bottom wall 312, a top wall 313 and a second side wall 314. The bottom wall 312 is used to connect the battery box 10, and the second side wall 314 is connected between the bottom wall 312 and the top wall 313. The bottom wall 312, the top wall 313 and the second side wall 314 form a second receiving cavity. The first wall 311 is the top wall 313 or a portion of the second side wall 314.

[0121] The bottom wall 312, top wall 313, and second side wall 314 constitute the housing structure of the high-voltage control component 30. It should be noted that in this embodiment, "bottom wall 312" and "top wall 313" refer to the following: when the battery device 100 is actually used in the electrical appliance, and the high-voltage control component 30 is installed in the housing 10, the bottom wall 312 can be located below the top wall 313. The bottom wall 312 is used to connect to the battery housing 10, so that the high-voltage control component 30 can be fixed to the battery housing 10. The top wall 313 can be located above the bottom wall 312 and opposite to it when the battery device 100 is actually used in the electrical appliance. Of course, during transportation or processing, the bottom wall 312 can be located above the top wall 313.

[0122] In addition, when the high-voltage control component 30 is installed on the upper part of the housing 10, the bottom wall 312 can also be located above the top wall 313. Therefore, the "top" and "bottom" mentioned in this embodiment cannot be used as a limitation on the position of the top wall 313 and the bottom wall 312.

[0123] The shape of the second sidewall 314 can be rectangular or circular, etc., while the first wall 311 can be... Figure 3 and 4 The second sidewall 314 is not distinguished from the first sidewall 311. Figure 5 The top wall 313 in the middle, since the bottom wall 312 needs to be connected to the housing 10, the bottom wall 312 after connection is not easy to meet the installation area requirements of the housing 41. Therefore, in this embodiment, the first wall 311 is designed as the top wall 313 or the second side wall 314 of the high-voltage control component 30. Compared with designing the first wall 311 as the bottom wall 312, it is more convenient to install the housing 41.

[0124] Finally, please see the appendix. Figure 2-9As shown, this application embodiment provides a battery device 100, including a housing 10, a battery cell 20, a high-voltage control component 30, and a low-voltage control component 40. The battery cell 20, the high-voltage control component 30, and the low-voltage control component 40 are all installed within the housing 10. The high-voltage control component 30 includes a first wall 311, and the low-voltage control component 40 includes a housing 41 and a circuit board 42 installed within the housing 41. The housing 41 is mounted on the first wall 311. The housing 41 and the first wall 311 form a first receiving cavity for accommodating the circuit board 42. The housing 41 includes a second wall 411 and a first side wall 412 surrounding and connected to the second wall 411. The first side wall 412 is connected to the first wall 311, and the first wall 311, the first side wall 412, and the second wall 411 enclose the first receiving cavity. At least one first sidewall 412 has a connecting edge 4121 on the side opposite to the second wall 411. The connecting edge 4121 extends away from the first receiving cavity and connects to the first wall 311. The second wall 411 has a wiring socket 4111. The housing 41 is located outside the box 31. The housing 41 and the first wall 311 are detachably connected. The housing 41 has a first connecting hole 41211, and the first wall 311 has a second connecting hole 3111. The first connecting hole 41211 and the second connecting hole 3111 are detachably connected by a connector 43. The first connecting hole 41211 is a through hole, and the second connecting hole 3111 is a blind hole. A first connecting sleeve 41212 is installed in the first connecting hole 41211. The outer wall of the first connecting sleeve 41212 is connected to the inner wall of the first connecting hole 41211, and the inner wall of the first connecting sleeve 41212 is connected to the connector 43. Alternatively, a second connecting sleeve 3112 is installed in the second connecting hole 3111. The outer wall of the second connecting sleeve 3112 is connected to the inner wall of the second connecting hole 3111, and the inner wall of the second connecting sleeve 3112 is connected to the connector 43. The first wall 311 is provided with an annular flange 3113 surrounding the second connecting hole 3111. The annular flange 3113 is used to support the housing 41. The portion of the first wall 311, excluding the annular flange 3113, forms a gap with the housing 41 along a first direction X, where the first direction X is the arrangement direction of the housing 41 to the first wall 311. The high-voltage control component 30 includes a bottom wall 312, a top wall 313, and a second side wall 314. The bottom wall 312 is used to connect the battery box 10, and the second side wall 314 is connected between the bottom wall 312 and the top wall 313. The bottom wall 312, the top wall 313, and the second side wall 314 form a second receiving cavity. The first wall 311 is the top wall 313 or a part of the second side wall 314.

[0125] Based on the battery device 100 described above, this application embodiment also provides an electrical device, including the battery device 100 described above. The battery device 100 is used to provide electrical energy to the electrical device, which may be a vehicle 1000.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for the intermediate technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A battery device, comprising a housing, a battery cell, a high-voltage control component, and a low-voltage control component, wherein the battery cell, the high-voltage control component, and the low-voltage control component are all installed within the housing; It is characterized in that The high-voltage control component includes a housing, the housing including a first wall, and the low-voltage control component includes a casing and a circuit board installed inside the casing, wherein the casing is installed on the first wall.

2. The battery device according to claim 1, characterized in that, The housing and the first wall form a first receiving cavity to accommodate the circuit board.

3. The battery device according to claim 2, characterized in that, The housing includes a second wall and a first side wall circumferentially connected to the second wall, the first side wall being connected to the first wall, and the first wall, the first side wall, and the second wall enclosing the first receiving cavity.

4. The battery device according to claim 3, characterized in that, The first sidewall has a connecting edge on the side away from the second wall. The connecting edge extends away from the first receiving cavity and is connected to the first wall.

5. The battery device according to claim 3, characterized in that, The second wall is provided with a wiring socket.

6. The battery device according to any one of claims 1-5, characterized in that, The housing is located outside the box.

7. The battery device according to any one of claims 1-5, characterized in that, The housing and the first wall are detachably connected.

8. The battery device according to claim 7, characterized in that, The housing is provided with a first connection hole, and the first wall is provided with a second connection hole. The first connection hole and the second connection hole are connected by a connector passing through them. The housing and the first wall are detachably connected by the connector.

9. The battery device according to claim 8, characterized in that, The first connecting hole is a through hole, and the second connecting hole is a blind hole.

10. The battery device according to claim 8, characterized in that, A first connecting sleeve is installed in the first connecting hole, the outer wall of the first connecting sleeve is connected to the inner wall of the first connecting hole, and the inner wall of the first connecting sleeve is connected to the connecting piece; And / or, a second connecting sleeve is installed in the second connecting hole, the outer wall of the second connecting sleeve is connected to the inner wall of the second connecting hole, and the inner wall of the second connecting sleeve is connected to the connector.

11. The battery device according to claim 8, characterized in that, The first wall is provided with an annular flange surrounding the second connecting hole. The annular flange is used to support the housing. The portion of the first wall other than the annular flange forms a gap with the housing along a first direction, which is the arrangement direction of the housing to the first wall.

12. The battery device according to any one of claims 1-5, characterized in that, The box includes a bottom wall, a top wall, and a second side wall. The bottom wall is connected to the box, and the second side wall is connected between the bottom wall and the top wall. The bottom wall, the top wall, and the second side wall form a second receiving cavity. The first wall is the top wall or part of the second side wall.

13. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-12, the battery device being used to provide electrical energy.

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