Electric control device, battery device and electric device

Abstract

The utility model relates to an electric control device, a battery device and a power utilization device. The electric control device comprises a shell, a circuit breaker protector and a conductive assembly, the circuit breaker protector comprises a first housing which is located in the housing, and one end of the first housing is provided with a first opening; the gas generator is arranged on the first shell and used for responding to the trigger signal to generate gas; the conductive protection sheet is connected with the first shell and covers the outer side of the first opening, and the two ends of the conductive protection sheet are connected with the conductive assembly and connected to the conductive assembly in series; the breaking piece is located in the first shell and can be pushed to the first opening under the action of gas generated by the gas generator so as to break the conductive protection sheet; wherein a connecting structure formed by connecting the conductive assembly and the conductive protection sheet is arranged on the inner surface of the shell, and the connecting structure and the shell are integrally formed. Therefore, a battery device producer can flexibly set the position of a weak point according to the characteristics of a protected circuit.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to an electronic control device, a battery device, and an electrical device. Background Art

[0002] A battery device generally includes a battery box, battery cells, an electronic control device, etc. An open circuit protector is provided inside the electronic control device. The open circuit protector is connected to a protected circuit inside the battery device through a conductive component, so as to perform disconnection protection in a timely manner when an overcurrent or short circuit occurs in the protected circuit.

[0003] In the related art, a conductive protection sheet is provided inside the open circuit protector, and a weak point is provided on the conductive protection sheet. When an overcurrent or short circuit occurs in the protected circuit, the open circuit protector can quickly disconnect from the weak point of the conductive protection sheet.

[0004] However, after the open circuit protector in the related art is assembled, it is difficult to flexibly set the position of the weak point on the conductive protection sheet according to the characteristics of the protected circuit. Summary of the Utility Model

[0005] In view of the above problems, the present application provides an electronic control device, a battery device, and an electrical device, which facilitate the battery device manufacturer to flexibly set the position of the weak point according to the characteristics of the protected circuit and improve the applicability to the protected circuit.

[0006] In a first aspect, an embodiment of the present application provides an electronic control device, which includes: a housing, an open circuit protector, and a conductive component; the open circuit protector includes:

[0007] A first housing, located inside the housing, one end of the first housing has a first opening;

[0008] A gas generator, provided in the first housing, for generating gas in response to a trigger signal;

[0009] A conductive protection sheet, connected to the first housing and covering the outside of the first opening, both ends of the conductive protection sheet are respectively connected to the conductive component and are connected in series to the conductive component; and

[0010] An interrupting member, located inside the first housing, and capable of being pushed towards the first opening under the action of the gas generated by the gas generator to interrupt the conductive protection sheet;

[0011] Wherein, the connection structure formed by connecting the conductive component and the conductive protection sheet is provided on the inner surface of the housing; and this connection structure is integrally formed with the housing.

[0012] In the above-mentioned electronic control device, the gas generator generates gas in response to a trigger signal. The breaking member located inside the first housing is pushed towards the first opening under the action of the gas generated by the gas generator to break the conductive protection sheet, so that the conductive component can be opened at the conductive protection sheet, and the protected circuit can be disconnected and protected in time.

[0013] When manufacturing the open-circuit protector, the open-circuit protector manufacturer may not set a weak point on the conductive protection sheet first and assemble the open-circuit protector first. Before the open-circuit protector needs to be assembled inside the battery device, the battery device manufacturer can remove the conductive protection sheet from the first housing, then select the position of the weak point according to the characteristics of the protected circuit, and then process a weak point on the conductive protection sheet. Finally, the conductive protection sheet is assembled to the first housing. Since the conductive protection sheet covers the outside of the first opening of the first housing, when disassembling or installing the conductive protection sheet from or to the first housing, it is not necessary to disassemble and assemble other components (such as the gas generator and the breaking member) inside the first housing. Therefore, it is convenient for the battery device manufacturer to flexibly set the position of the weak point according to the characteristics of the protected circuit, improving the applicability to the protected circuit. Moreover, by arranging the connection structure formed by connecting the conductive component and the conductive protection sheet on the inner surface of the housing, and the connection structure is integrally formed with the housing, there is no need to use other connecting components to connect the connection structure and the housing, thus reducing the cost of the connecting components and the space occupation.

[0014] In an embodiment, the conductive protection sheet includes: a protection sheet main body, a first connection sheet, and a second connection sheet. The first connection sheet and the second connection sheet are respectively connected to the conductive component and are respectively attached to the inner surface of the housing;

[0015] The protection sheet main body is configured as a groove structure, and the bottom wall of the groove structure covers the outside of the first opening; the opposite two side walls of the groove structure are respectively attached to both sides of the first housing and are respectively connected to the first connection sheet and the second connection sheet.

[0016] Since the first housing is located inside the housing, and the first connection sheet and the second connection sheet are respectively attached to the inner surface of the housing, by configuring the protection sheet main body as a groove structure, it is convenient to cover the first opening of the first housing through the bottom wall of the protection sheet main body. By attaching the first connection sheet and the second connection sheet to the inner surface of the housing, it is convenient to realize the integral molding and stable connection of the conductive protection sheet and the housing.

[0017] In an embodiment, the housing includes a first housing wall, and the connection structure is arranged on the inner surface of the first housing wall;

[0018] The recessed direction of the groove structure is along a first direction, where the first direction points towards the inside of the housing along the thickness direction of the first housing wall or is perpendicular to the thickness direction of the first housing wall.

[0019] In this embodiment, since the recessed direction of the groove structure is along the first direction, and the first direction is perpendicular to the thickness direction of the first housing wall or perpendicular to the thickness direction of the first housing wall, therefore, the breaking member moves along the first direction to break the bottom wall of the groove structure, so that it is not easy to hit the conductive component on the inner surface of the first housing wall.

[0020] In one embodiment, the circuit breaker further includes a second housing, and the second housing is connected to the first housing;

[0021] The second housing includes a bottom plate and a plurality of side plates connected to the bottom plate. The bottom plate is disposed opposite to the main body of the protection piece; the plurality of side plates are sequentially connected along the circumference of the bottom plate and are located on one side of the bottom plate close to the main body of the protection piece.

[0022] Since the bottom plate is disposed opposite to the main body of the protection piece, when the breaking member breaks both adjacent weak points on the main body of the protection piece, the portion between the adjacent weak points will move towards the bottom plate under the impact force of the breaking member. Also, since the plurality of side plates are sequentially connected along the circumference of the bottom plate and are located on one side of the bottom plate close to the main body of the protection piece, the accommodating space defined by the plurality of side plates and the bottom plate can accommodate the broken portion of the main body of the protection piece, and the plurality of side plates and the bottom plate can respectively block the broken portion, so as to avoid the broken portion from causing impact damage to other devices in the electronic control device as much as possible.

[0023] In one embodiment, the plurality of side plates are sequentially connected end to end along the circumference of the bottom plate to form a closed structure along the circumference of the bottom plate; the gas generator is located on the side of the breaking member away from the main body of the protection piece.

[0024] The plurality of side plates are sequentially connected end to end along the circumference of the bottom plate to form a closed structure along the circumference of the bottom plate, so that the broken portion on the conductive protection piece can be fully enclosed, and the broken portion can be prevented from causing impact damage to other devices in the electronic control device as much as possible.

[0025] In one embodiment, the outer shell includes a first housing wall, and the connecting structure is disposed on the inner surface of the first housing wall; the recessed direction of the groove structure is along the first direction, wherein the first direction points towards the inside of the outer shell along the thickness direction of the first housing wall;

[0026] A notch is provided on one side of the first housing wall along the second direction, and the second direction is perpendicular to the first direction; the bottom plate and the plurality of side plates together define a second opening at one end along the second direction close to the outside of the outer shell; the gas generator is disposed at one end of the first housing along the second direction close to the outside of the outer shell.

[0027] In this embodiment, since the depression direction of the groove structure formed by the conductive protection sheet is along the first direction, where the first direction points towards the interior of the housing along the thickness direction of the first housing wall, the breaking member can move towards the interior of the housing along the first direction under the action of the gas, and thus it is not easy to impact the conductive component arranged on the inner surface of the housing from the side.

[0028] In one embodiment, one ends of a plurality of side plates away from the bottom plate jointly define a third opening;

[0029] One end of the first housing away from the protection sheet body extends out of the third opening and is located in the notch; the second housing further includes a retaining cover, and the retaining cover is located between the first housing and the inner surface of the notch.

[0030] In this embodiment, since one ends of a plurality of side plates away from the bottom plate jointly define a third opening, and one end of the first housing away from the protection sheet body extends out of the third opening and is located in the notch, it is convenient to install the first housing on the second housing. By the retaining cover being located between the first housing and the inner surface of the notch, the exposed area between the first housing and the inner surface of the notch can be blocked, so as to avoid the conductive protection sheet being exposed between the first housing and the inner surface of the notch.

[0031] In one embodiment, the second housing is an arc extinguishing housing, and an arc extinguishing device is arranged inside. Thus, the arc can be quickly extinguished when the conductive protection sheet is disconnected, preventing continuous discharge from causing danger.

[0032] In one embodiment, the housing includes a box body and a box cover, the box cover is connected to the box body and covers the box opening of the box body; the connecting structure is arranged on the inner surface of the box cover.

[0033] In one embodiment, the gas generator is a gunpowder gas generator.

[0034] In a second aspect, an embodiment of the present application provides a battery device, including a battery cell and the electronic control device in any one of the above embodiments, and the electronic control device is electrically connected to the battery cell.

[0035] In a third aspect, an embodiment of the present application provides an electrical device, including the battery device in the above embodiment, and the battery device is used to provide electrical energy for the electrical device.

[0036] For the above battery device and electrical device, the gas generator generates gas in response to a trigger signal, and the breaking member located in the first housing is pushed towards the first opening under the action of the gas generated by the gas generator to break the conductive protection sheet, so that the conductive component can be open-circuited at the conductive protection sheet, and timely play a role in disconnecting and protecting the protected circuit.

[0037] When manufacturing a circuit breaker protector, the producer of the circuit breaker protector may not initially set a weak point on the conductive protection sheet and first assemble the circuit breaker protector completely. Before the circuit breaker protector needs to be assembled inside the battery device, the producer of the battery device may remove the conductive protection sheet from the first housing, then select the position of the weak point according to the characteristics of the protected circuit, and then process a weak point on the conductive protection sheet. Finally, the conductive protection sheet is assembled to the first housing. Since the conductive protection sheet covers the outside of the first opening of the first housing, therefore, whether disassembling or installing the conductive protection sheet from / to the first housing, it is not necessary to disassemble and assemble other components (such as a gas generator and a breaking member) inside the first housing, thus facilitating the producer of the battery device to flexibly set the position of the weak point according to the characteristics of the protected circuit and improving the applicability to the protected circuit. Moreover, by arranging the connection structure formed by connecting the conductive component and the conductive protection sheet on the inner surface of the housing, and the connection structure is integrally formed with the housing, thus there is no need to use other connecting parts to connect the connection structure with the housing, thereby reducing the cost of the connecting parts and the occupation of space.

[0038] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically gives the specific implementation manners of the present application. Brief Description of the Drawings

[0039] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0040] Figure 1 It is a schematic structural diagram of a vehicle according to some embodiments of the present application.

[0041] Figure 2 It is an exploded structural diagram of a battery device according to some embodiments of the present application.

[0042] Figure 3 It is an exploded structural diagram of a battery cell according to some embodiments of the present application.

[0043] Figure 4 It is a schematic connection relationship diagram of the lid of an electronic control device and a circuit breaker protector according to some embodiments of the present application.

[0044] Figure 5 It is an exploded schematic diagram of the connection relationship of the lid of an electronic control device, a circuit breaker protector, and a conductive component according to some embodiments of the present application.

[0045] Figure 6 Schematic diagram of the connection relationship between the first housing and the breaking member in some embodiments of the present application.

[0046] Figure 7 Schematic diagram of the connection relationship between the first housing and the conductive protection sheet in some embodiments of the present application.

[0047] Figure 8 Schematic diagram of the structure of the conductive protection sheet in an embodiment of the present application.

[0048] Figure 9 Schematic diagram of the structure of the circuit breaker in an embodiment of the present application.

[0049] Figure 10 Schematic diagram of the connection relationship between the first housing wall of the electric control device and the circuit breaker in some other embodiments of the present application.

[0050] Figure 11 Exploded schematic diagram of the first housing wall, circuit breaker, and conductive component of the electric control device in some other embodiments of the present application.

[0051] The reference numerals in the specific embodiments are as follows:

[0052] 1000 - Vehicle;

[0053] 1100 - Battery device; 1110 - Battery box; 1111 - Box body; 1112 - Upper cover; 1120 - Battery cell; 1121 - End cover; 1121a - Electrode terminal; 1122 - Housing; 1123 - Core component;

[0054] 1200 - Controller;

[0055] 1300 - Motor;

[0056] 100 - Outer shell; 120 - First housing wall; 120a - Notch;

[0057] 200 - Circuit breaker;

[0058] 210 - First housing; 210a - First opening;

[0059] 220 - Gas generator;

[0060] 230 - Conductive protection sheet; 231 - First connecting piece; 232 - Second connecting piece; 233 - Protection sheet body; 233a - Bottom wall of the groove structure; 233b - First side wall of the groove structure; 233c - Second side wall of the groove structure; 230a - Weak point;

[0061] 240 - Breaking member;

[0062] 250 - Second housing; 251 - Bottom plate; 252 - Side plate; 252a - First side plate; 252b - Second side plate; 253 - Cover; 250a - Second opening; 250b - Third opening;

[0063] 300 - Conductive component; 310 - First conductive section; 320 - Second conductive section. Detailed implementation mode

[0064] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled 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" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0066] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise clearly and specifically defined.

[0067] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0068] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0069] In the description of the embodiments of the present application, the term "a plurality" 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).

[0070] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

[0071] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0072] Currently, from the perspective of the development of the market situation, the application of battery devices is becoming more and more extensive. Battery devices are not only applied to energy storage power systems such as hydraulic, thermal, wind, and solar power stations, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of battery devices, the market demand is also continuously increasing.

[0073] A battery device generally includes a battery box, battery cells, and an electronic control device, etc. An open circuit protector is provided inside the electronic control device. The open circuit protector is connected to the protected circuit inside the battery device through a conductive component to disconnect and protect in time when the protected circuit has an overcurrent or a short circuit.

[0074] An open circuit protector in the related art is internally provided with a conductive protection sheet, and a weak point is provided on the conductive protection sheet. When the protected circuit has an overcurrent or a short circuit, the open circuit protector can quickly disconnect from the weak point of the conductive protection sheet.

[0075] In the circuit breaker in the related art, the conductive protection sheet is fixed inside the housing of the circuit breaker. Therefore, before assembly, it is necessary to set weak points on the conductive protection sheet. After assembly is completed, the position of the weak points cannot be changed anymore. However, for different protected circuits, the preferred positions of the weak points are different. For example, when the protected circuit is a high-voltage circuit, the distance between two adjacent weak points on the conductive protection sheet needs to be set relatively large. In this way, when the two adjacent weak points are disconnected, a relatively large distance can be disconnected on the conductive protection sheet, so that the disconnected area on the conductive protection sheet can withstand a higher voltage. On the contrary, when the protected circuit is a low-voltage circuit, the distance between two adjacent weak points on the conductive protection sheet can be set relatively small.

[0076] Since it is difficult to flexibly set the position of the weak points on the conductive protection sheet according to the characteristics of the protected circuit in the circuit breaker in the related art after assembly is completed, it is easy to result in poor applicability of the position of the weak points to the protected circuit.

[0077] Based on the above considerations, in order to solve the problem that it is difficult to flexibly set the position of the weak points on the conductive protection sheet according to the characteristics of the protected circuit in the circuit breaker in the related art after assembly is completed, this application designs an electric control device, a battery device and an electrical device. The conductive protection sheet covers the outside of the first opening of the first housing. When the circuit breaker manufacturer processes the circuit breaker, weak points may not be set on the conductive protection sheet first, and the circuit breaker is assembled first. Before the circuit breaker needs to be assembled inside the battery device, the battery device manufacturer removes the conductive protection sheet from the first housing, then selects the position of the weak points according to the characteristics of the protected circuit, then processes weak points on the conductive protection sheet, and finally assembles the conductive protection sheet to the first housing. Whether the conductive protection sheet is disassembled from the first housing or installed on the first housing, it is not necessary to disassemble and assemble other components (such as a gas generator and a breaking member) inside the first housing, so that it is convenient for the battery device manufacturer to flexibly set the position of the weak points according to the characteristics of the protected circuit and improve the applicability to the protected circuit. Moreover, by arranging the connection structure formed by connecting the conductive component and the conductive protection sheet on the inner surface of the outer shell, and the connection structure is integrally formed with the outer shell, there is no need to use other connecting pieces to connect the connection structure with the outer shell, thereby reducing the cost of the connecting pieces and the occupation of space.

[0078] The battery device disclosed in the embodiments of the present application can be used in, but is not limited to, electrical equipment such as vehicles, ships, or aircraft. Specifically, the electrical equipment can be, but is not limited to, electric toys, power tools, battery cars, electric vehicles, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as electric vehicle toys, electric ship toys, and electric aircraft toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc. By using the battery device disclosed in the present application to form the power supply system of the electrical equipment, the weight of the battery device can be reduced.

[0079] For the convenience of description, the following embodiments take a vehicle 1000, which is an electrical equipment in some embodiments of the present application, as an example for description.

[0080] Please refer to Figure 1 , Figure 1 , which shows a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery device 1100 is provided inside the vehicle 1000, and the battery device 1100 can be arranged at the bottom, head, or tail of the vehicle 1000. The battery device 1100 can be used for power supply of the vehicle 1000. For example, the battery device 1100 can be used as the operating power source of the vehicle 1000. The vehicle 1000 can also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery device 1100 to supply power to the motor 1300. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0081] In some embodiments of the present application, the battery device 1100 can not only be used as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0082] Please refer to Figure 2 , Figure 2An exploded view of a battery provided by some embodiments of the present application. The battery device 1100 includes a battery box 1110 and battery cells 1120. The battery cells 1120 are accommodated in the battery box 1110. Among them, the battery box 1110 is used to provide an accommodation space for the battery cells 1120, and the battery box can adopt various structures. In some embodiments, the battery box 1110 may include an upper cover 1112 and a box body 1111. The upper cover 1112 and the box body 1111 cover each other, and the upper cover 1112 and the box body 1111 jointly define an accommodation cavity for accommodating the battery cells 1120. The box body 1111 may be a hollow structure with one end open, and the upper cover 1112 may be a plate-like structure. The upper cover 1112 covers the open side of the box body 1111 so that the upper cover 1112 and the box body 1111 jointly define the accommodation cavity; the upper cover 1112 and the box body 1111 may also both be hollow structures with one side open, and the open side of the upper cover 1112 covers the open side of the box body 1111. Of course, the battery box 1110 formed by the upper cover 1112 and the box body 1111 can be of various shapes, such as a cylinder, a cuboid, etc.

[0083] In the battery device 1100, there may be multiple battery cells 1120, and the multiple battery cells 1120 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 1120. The multiple battery cells 1120 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 1120 is accommodated in the battery box 1110; of course, the battery device 1100 can also be that multiple battery cells 1120 are first connected in series, in parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated in the battery box 1110. The battery device may further include other structures. For example, the battery device may further include a busbar component for realizing the electrical connection among the multiple battery cells 1120.

[0084] Among them, each battery cell 1120 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 1120 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0085] Please refer to Figure 3 , Figure 3 which shows Figure 2 an exploded view of the battery cell 1120 shown. The battery cell 1120 refers to the smallest unit that makes up the battery device 1100. As Figure 3 shown, the battery cell 1120 includes an end cap 1121, a housing 1122, a core component 1123, and other functional components.

[0086] The end cap 1121 refers to a component that covers the opening of the housing 1122 to isolate the internal environment of the battery cell 1120 from the external environment. Without limitation, the shape of the end cap 1121 can be adapted to the shape of the housing 1122 to fit the housing 1122. Optionally, the end cap 1121 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 1121 is not easily deformed when subjected to extrusion and collision, enabling the battery cell 1120 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 1121a can be provided on the end cap 1121. The electrode terminal 1121a can be used for electrically connecting to the battery cell assembly 1123 to output or input the electrical energy of the battery cell 1120. In some embodiments, a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 1120 reaches a threshold can also be provided on the end cap 1121. The material of the end cap 1121 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special restrictions on this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap 1121, and the insulating structure can be used to isolate the electrical connection components in the housing 1122 from the end cap 1121 to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0087] The housing 1122 is a component used to cooperate with the end cap 1121 to form the internal environment of the battery cell 1120, where the formed internal environment can be used to accommodate the battery cell assembly 1123, electrolyte, and other components. The housing 1122 and the end cap 1121 can be independent components. An opening can be provided on the housing 1122, and the end cap 1121 is covered at the opening to form the internal environment of the battery cell 1120. Without limitation, the end cap 1121 and the housing 1122 can also be integrated. Specifically, the end cap 1121 and the housing 1122 can first form a common connection surface before other components are inserted into the housing, and when it is necessary to encapsulate the inside of the housing 1122, the end cap 1121 is then covered on the housing 1122. The housing 1122 can be of various shapes and sizes, such as rectangular parallelepiped shape, cylindrical shape, hexagonal prism shape, etc. Specifically, the shape of the housing 1122 can be determined according to the specific shape and size of the battery cell assembly 1123. The material of the housing 1122 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special restrictions on this.

[0088] The battery cell assembly 1123 is the component in the battery cell 1120 where the electrochemical reaction occurs. The housing 1122 can contain one or more battery cell assemblies 1123. The battery cell assembly 1123 is mainly formed by laminating a composite tape 400, and the composite tape 400 is formed by thermally laminating a positive electrode sheet, a negative electrode sheet, and a separator disposed between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet having active materials constitute the main body of the battery cell assembly 1123, and the portions of the positive electrode sheet and the negative electrode sheet without active materials respectively constitute the electrode tabs. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or at both ends of the main body respectively. During the charging and discharging process of the battery device 1100, the positive active material and the negative active material react with the electrolyte, and the electrode tabs are connected to the electrode terminals 1121a to form a current loop.

[0089] Please refer to Figures 4 to 7 , Figure 4 which shows a schematic connection diagram of the lid of the electronic control device and the circuit breaker protector according to some embodiments of the present application. Figure 5 which shows an exploded structural schematic diagram of the lid of the electronic control device, the circuit breaker protector, and the conductive component according to some embodiments of the present application. Figure 6 which shows a schematic connection diagram of the first housing and the breaking member according to some embodiments of the present application. Figure 7 which shows a schematic connection diagram of the first housing and the conductive protection sheet according to some embodiments of the present application.

[0090] Combined with Figure 4 and Figure 5 , an electronic control device provided by an embodiment of the present application includes: a housing 100, a circuit breaker protector 200, and a conductive component 300. The circuit breaker protector 200 includes: a first housing 210, a gas generator 220, a conductive protection sheet 230, and a breaking member 240.

[0091] Referring to Figure 6 , the first housing 210 is located inside the housing 100. One end of the first housing 210 has a first opening 210a.

[0092] Referring to Figure 5 , the gas generator 220 is disposed in the first housing 210 and is used to generate gas in response to a trigger signal.

[0093] Combined with Figures 5 to 7 again, the conductive protection sheet 230 is connected to the first housing 210 and covers the outside of the first opening 210a. Both ends of the conductive protection sheet 230 are respectively connected to the conductive component 300 and are connected in series with the conductive component 300.

[0094] The breaking member 240 is located inside the first housing 210 and can be pushed towards the first opening 210a under the action of the gas generated by the gas generator 220 to break the conductive protection sheet 230.

[0095] Specifically, the electronic control device can be a high-voltage box, a low-voltage box, a battery management system control box, or other electronic control devices. The conductive component 300 can be a structural component such as a copper busbar. It can be understood that in the battery device, some battery cells are connected to form a high-voltage battery module, and the working circuit of the high-voltage battery module is a high-voltage circuit; some battery cells are connected to form a low-voltage battery module, and the working circuit of the low-voltage battery module is a low-voltage circuit. The high-voltage box can be electrically connected to the high-voltage battery module. The low-voltage box can be electrically connected to the low-voltage battery module.

[0096] The conductive protection sheet 230 can be a copper sheet. The conductive protection sheet 230 is connected to the protected circuit through the conductive component 300. The protected circuit can be a high-voltage circuit or a low-voltage circuit, or the working circuit of the battery management system, or other working circuits.

[0097] Specifically, after the trigger module (not shown) meets the preset trigger condition, it sends a trigger signal, and the gas generator 220 generates gas in response to the trigger signal. The trigger module can receive the current signal in the protected circuit. When the current in the protected circuit is overloaded or short-circuited, that is, the preset trigger condition of the trigger module is met, so the trigger module sends a trigger signal to the gas generator 220. The trigger module can be a control module in the battery management system or an additional configured trigger module.

[0098] Optionally, the gas generator 220 can be a gunpowder gas generator, which can generate high-pressure gas through gunpowder explosion. Of course, the gas generator can also be of other types.

[0099] The breaking member 240 located in the first housing 210 is pushed towards the first opening 210a under the action of the gas generated by the gas generator 220, that is, it moves towards the direction extending outside the first opening 210a. Since the conductive protection sheet 230 is connected to the first housing 210 and covers the outside of the first opening 210a, when the breaking member 240 moves towards the direction extending outside the first opening 210a, it can break the conductive protection sheet 230.

[0100] Since the two ends of the conductive protection sheet 230 are respectively connected to the conductive component 300 and are connected in series to the conductive component 300, when the conductive protection sheet 230 is broken, the conductive component 300 is opened at the conductive protection sheet 230. And because the conductive component 300 is connected to the protected circuit, it can timely play a role of disconnecting and protecting the protected circuit. It can be understood that the conductive component 300 is connected in series in the protected circuit.

[0101] For specific reference, please Figure 5, the conductive component 300 includes a first conductive segment 310 and a second conductive segment 320. Two ends of the conductive protection sheet 230 are respectively connected to one end of the first conductive segment 310 and one end of the second conductive segment 320. The other ends of the first conductive segment 310 and the second conductive segment 320 are respectively connected to the circuit to be protected, so that the conductive component 300 can be connected in series in the circuit to be protected, and the conductive protection sheet 230 can be connected in series in the conductive component 300.

[0102] Combined Figure 4 and Figure 5 , the connection structure formed by connecting the conductive component 300 and the conductive protection sheet 230 is arranged on the inner surface of the housing 100, and the connection structure is integrally formed with the housing 100.

[0103] In the above-mentioned electric control device, the gas generator 220 generates gas in response to a trigger signal. The breaking member 240 located in the first housing 210 is pushed towards the first opening 210a under the action of the gas generated by the gas generator 220 to break the conductive protection sheet 230, so that the conductive component 300 can be opened at the conductive protection sheet 230, and the circuit to be protected can be disconnected and protected in time.

[0104] When the manufacturer of the open-circuit protector 200 processes the open-circuit protector 200, the weak point may not be set on the conductive protection sheet 230 first, and the open-circuit protector 200 is assembled first. Before the open-circuit protector 200 needs to be assembled inside the battery device, the producer of the battery device can remove the conductive protection sheet 230 from the first housing 210, then select the position of the weak point according to the characteristics of the circuit to be protected, and then process the weak point 230a on the conductive protection sheet 230. Finally, the conductive protection sheet 230 is assembled to the first housing 210. Since the conductive protection sheet 230 covers the outside of the first opening 210a of the first housing 210, whether the conductive protection sheet 230 is disassembled from the first housing 210 or installed on the first housing 210, other components inside the first housing 210 (such as the gas generator 220 and the breaking member 240) do not need to be disassembled and assembled. Therefore, it is convenient for the producer of the battery device to flexibly set the position of the weak point 230a according to the characteristics of the circuit to be protected, and improve the applicability to the circuit to be protected. Moreover, by arranging the connection structure formed by connecting the conductive component and the conductive protection sheet on the inner surface of the housing, and the connection structure is integrally formed with the housing, there is no need to use other connecting parts to connect the connection structure with the housing, thereby reducing the cost of the connecting parts and the occupation of space.

[0105] In the open-circuit protector in the traditional technology, the conductive protection sheet is arranged inside the housing, and two ends of the conductive protection sheet respectively need to be led out through conductive connecting sheets and then connected to the conductive component through the conductive connecting sheets.

[0106] In the embodiment of the present application, since the conductive protection sheet 230 covers the outside of the first opening 210a of the first housing 210, both ends of the conductive protection sheet 230 can be directly connected to the conductive component, without the need to be additionally connected to the conductive component through a conductive connection sheet. That is, the conductive protection sheet 230 can simultaneously function as a conductive connection sheet, the structure is more simplified, and the assembly operation can be simplified.

[0107] Specifically, the conductive component 300 and the conductive protection sheet 230 are made of conductive materials, while the housing 100 is made of an insulating material, such as plastic. During preparation, the conductive component 300 and the conductive protection sheet 230 can be processed first and the conductive component 300 and the conductive protection sheet 230 are electrically connected, such as by welding.

[0108] Then, the connection structure formed by connecting the conductive component 300 and the conductive protection sheet 230 is arranged in a mold, and then the housing 100 is formed by injection molding in the mold, so that the connection structure formed by connecting the conductive component 300 and the conductive protection sheet 230 and the housing 100 form an integrally formed structure.

[0109] Figure 8 The structural schematic diagram of the conductive protection sheet according to an embodiment of the present application is shown. Combining Figure 5 、 Figure 7 and Figure 8 In one embodiment, the conductive protection sheet 230 includes: a protection sheet main body 233, a first connection sheet 231, and a second connection sheet 232. The first connection sheet 231 and the second connection sheet 232 are respectively connected to the conductive component 300 and are respectively attached to the inner surface of the housing 100.

[0110] The protection sheet main body 233 is configured as a groove structure, and the bottom wall 233a of the groove structure covers the outside of the first opening 210a. The opposite two side walls of the groove structure are respectively attached to both sides of the first housing 210 and are respectively connected to the first connection sheet 231 and the second connection sheet 232.

[0111] The groove structure includes the bottom wall 233a of the groove structure and the first side wall 233b and the second side wall 233c of the groove structure which are oppositely arranged. The first side wall 233b and the second side wall 233c of the groove structure are respectively connected to both ends of the bottom wall 233a of the groove structure. The first side wall 233b of the groove structure is connected to the first connection sheet 231, and the second side plate 252b is connected to the second connection sheet 232. The weak point 230a is arranged on the bottom wall 233a of the groove structure. Thus, when the breaking member 240 is pushed outside the first opening 210a, the bottom wall 233a of the groove structure can be disconnected by breaking the weak point 230a.

[0112] Since the first housing 210 is located inside the outer housing 100, and the first connecting piece 231 and the second connecting piece 232 are respectively attached to the inner surface of the outer housing 100, therefore, by constructing the protection piece body 233 into a groove structure, it is convenient to cover the first opening 210a of the first housing 210 through the bottom wall 233a of the groove structure of the protection piece body 233. By attaching the first connecting piece 231 and the second connecting piece 232 to the inner surface of the outer housing 100, it is convenient to realize the integral molding and stable connection of the conductive protection piece 230 and the outer housing 100.

[0113] Combined Figure 4 and Figure 5 , in an embodiment, the outer housing 100 includes a first housing wall 120, and the connection structure formed by connecting the conductive component 300 and the conductive protection piece 230 is disposed on the inner surface of the first housing wall 120, that is, integrally formed with the first housing wall 120. The recessed direction of the groove structure is along a first direction, wherein the first direction is perpendicular to the thickness direction of the first housing wall 120.

[0114] Optionally, the outer housing 100 of the electric control device includes a box body and a box cover, and the box cover is connected to the box body and covers the box opening of the box body. The first housing wall 120 can be the box cover, that is, the connection structure formed by connecting the conductive component 300 and the conductive protection piece 230 is disposed on the inner surface of the box cover. By disposing the connection structure on the box cover, it is convenient to make the connection. In other embodiments, the first housing wall 120 can also be the box wall of the box body.

[0115] In Figure 5 the illustrated embodiment, the first direction is the OX' direction, perpendicular to the thickness direction of the first housing wall 120. Also, since the bottom wall 233a of the groove structure is opposite to the first opening 210a, therefore, the first opening 210a faces the first direction. In this embodiment, the first connecting piece 231 and the bottom wall 233a of the groove structure are located on adjacent sides of the first side wall 233b of the groove structure, and the second connecting piece 232 and the bottom wall 233a of the groove structure are located on adjacent sides of the second side wall 233c of the groove structure.

[0116] In this embodiment, since the recessed direction of the groove structure is along the first direction, and the first direction is perpendicular to the thickness direction of the first housing wall 120, therefore, the first opening 210a faces the first direction. Thus, the breaking member 240 moves along the first direction to break the bottom wall 233a of the groove structure, so that it is not easy to hit the conductive component 300 on the inner surface of the first housing wall 120.

[0117] Figure 9 Shows a schematic structural diagram of a circuit breaker according to an embodiment of the present application. Please combine Figure 5 and Figure 9, in one embodiment, the circuit breaker 200 further includes a second housing 250, and the second housing 250 is connected to the first housing 210. The second housing 250 includes a bottom plate 251 and a plurality of side plates 252 connected to the bottom plate 251. The bottom plate 251 is disposed opposite to the protection piece main body 233. The plurality of side plates 252 are sequentially connected along the circumference of the bottom plate 251 and are located on the side of the bottom plate 251 close to the protection piece main body 233.

[0118] In Figure 5 and Figure 9 In the illustrated embodiment, the plurality of side plates 252 are sequentially connected end to end along the circumference of the bottom plate 251 to form a closed structure along the circumference of the bottom plate 251. Thus, the accommodation space jointly defined by the plurality of side plates 252 and the bottom plate 251 is a concave cavity. The first opening 210a faces the bottom of the concave cavity. The second housing 250 is connected to the end of the first housing 210 provided with the first opening 210a.

[0119] Since the bottom plate 251 is disposed opposite to the protection piece main body 233, when the breaking member 240 breaks both adjacent weak points 230a on the protection piece main body 233, the portion between the two adjacent weak points 230a will move toward the bottom plate 251 under the impact force of the breaking member 240. Also, since the plurality of side plates 252 are sequentially connected along the circumference of the bottom plate 251 and are located on the side of the bottom plate 251 close to the protection piece main body 233, the accommodation space defined by the plurality of side plates 252 and the bottom plate 251 can accommodate the broken part of the protection piece main body 233, and the plurality of side plates 252 and the bottom plate 251 can respectively block the broken part, thereby minimizing the impact damage to other components in the electric control device caused by the broken part.

[0120] It can be understood that when the battery device manufacturer needs to set weak points on the conductive protection piece 230, it is necessary to disassemble the conductive protection piece 230 from the first housing 210, so it is necessary to first separate the second housing 250 from the first housing 210; after the weak points are set and the conductive protection piece 230 is installed on the first housing 210, the second housing 250 still needs to be installed. Although the disassembly and assembly process of the conductive protection piece 230 is affected by the second housing 250, it still does not affect the internal structure of the first housing 210, and it is still very convenient to set weak points.

[0121] Please refer to Figure 5 , Figure 7 and Figure 9, in one embodiment, among the plurality of side plates 252, there are a first side plate 252a and a second side plate 252b that face each other. The first side plate 252a and the second side plate 252b protrude away from the bottom plate 251 relative to the other side plates. In this way, the protruding portion of the first side plate 252a can cover the first side wall 233b of the groove structure, and the protruding portion of the second side plate 252b can cover the second side wall 233c of the groove structure, thereby preventing the first side wall 233b and the second side wall 233c of the groove structure from being exposed.

[0122] The other side plates may include a third side plate and a fourth side plate that face each other. The direction in which the third side plate and the fourth side plate face each other is perpendicular to the direction in which the first side plate 252a and the second side plate 252b face each other.

[0123] Please refer to Figure 5 and Figure 9 , in one embodiment, the gas generator 220 is located on the side of the breaking member 240 away from the protection sheet body 233, facilitating the arrangement of the relative positions of the gas generator 220, the breaking member 240, and the conductive protection sheet 230.

[0124] In Figure 5 and Figure 9 In the illustrated embodiment, the first direction is along the OX' direction, that is, perpendicular to the thickness direction of the first housing wall 120 and towards the inside of the housing 100. The gas generator 220 is located (in the direction opposite to the first direction, that is, the OX direction) on the side of the breaking member 240 facing the outside of the housing 100.

[0125] In one embodiment, the second housing 250 is an arc extinguishing housing, and an arc extinguishing device is provided inside, so that an arc can be quickly extinguished when the conductive protection sheet 230 is disconnected, preventing danger caused by continuous discharge.

[0126] Please refer to Figure 4 and Figure 5 , in one embodiment, a notch 120a is provided on one side of the first housing wall 120 along the second direction, and the circuit breaker 200 is installed at the notch 120a.

[0127] In Figure 5 In the illustrated embodiment, the second direction is the OX direction, perpendicular to the thickness direction of the first housing wall 120.

[0128] Another embodiment of the present application further provides an electric control device, and this electric control device is related to Figures 4 to 9The structures of the illustrated embodiments are basically the same. The difference is that the first direction points towards the inside of the outer shell 100 along the thickness direction of the first shell wall. Thus, the first connecting piece 231 is located at one end of the first side wall 233b of the groove structure away from the bottom wall 233a of the groove structure. The second connecting piece 232 is located at one end of the second side wall 233c of the groove structure away from the bottom wall 233a of the groove structure.

[0129] Thus, under the action of gas, the interrupting member 240 can move towards the inside of the outer shell 100 along the first direction, so that it is not easy to laterally impact the conductive component 300 provided on the inner surface of the outer shell 100.

[0130] Please refer to Figures 10 to 11 , Figure 10 which shows a schematic diagram of the connection relationship between the lid (first shell wall) of the electric control device and the circuit breaker protector in some other embodiments of the present application. Figure 11 which shows an exploded schematic diagram of the connection structure of the lid (first shell wall), the circuit breaker protector, and the conductive component of the electric control device in some other embodiments of the present application.

[0131] Please refer to Figure 10 and Figure 11 , another embodiment of the present application further provides an electric control device, which has basically the same structure as the Figures 4 to 9 illustrated embodiment, and the differences will be mainly introduced below.

[0132] The outer shell 100 includes a first shell wall 120, and a connection structure formed by connecting the conductive component 300 and the conductive protection piece 230 is provided on the inner surface of the first shell wall 120. The depression direction of the groove structure constructed by the conductive protection piece 230 is along the first direction, where the first direction points towards the inside of the outer shell 100 along the thickness direction of the first shell wall 120, that is, the OZ direction.

[0133] A notch 120a is provided on one side of the first shell wall 120 along the second direction (OX direction), and the second direction is perpendicular to the first direction.

[0134] One end of the bottom plate 251 close to the outside of the outer shell 100 along the second direction and a plurality of side plates 252 jointly define a second opening 250a. The gas generator 220 is provided at one end of the first housing 210 close to the outside of the outer shell 100 along the second direction.

[0135] As Figure 11 shown, the plurality of side plates 252 are not closed along the circumferential direction of the bottom plate 251, forming an open end with a second opening 250a. The gas generator 220 is provided at one end of the first housing 210 close to the outside of the outer shell 100 along the second direction, that is, the gas generator 220 is provided at the second opening 250a and adjacent to the outside of the outer shell 100. Therefore, there is no need to provide side plates 252 for enclosure at the second opening 250a.

[0136] In this embodiment, since the depression direction of the groove structure formed by the conductive protection sheet 230 is along the first direction, where the first direction points to the inside of the housing 100 along the thickness direction of the first housing wall 120, thus, the breaking member 240 can move towards the inside of the housing 100 along the first direction under the action of the gas, and thus it is not easy to laterally impact the conductive component 300 arranged on the inner surface of the housing 100.

[0137] Please refer to Figure 10 and Figure 11 , in an embodiment, one ends of the plurality of side plates 252 away from the bottom plate 251 jointly define a third opening 250b. One end of the first housing 210 away from the protection sheet main body 233 extends out of the third opening 250b and is located in the notch 120a. The second housing 250 further includes a cover 253, and the cover 253 is located between the first housing 210 and the inner surface of the notch 120a to shield the exposed area between the first housing 210 and the inner surface of the notch 120a.

[0138] In this embodiment, since one ends of the plurality of side plates 252 away from the bottom plate 251 jointly define the third opening 250b, and one end of the first housing 210 away from the protection sheet main body 233 extends out of the third opening 250b and is located in the notch 120a, it is convenient to install the first housing 210 on the second housing 250. By the cover 253 being located between the first housing 210 and the inner surface of the notch 120a, the exposed area between the first housing 210 and the inner surface of the notch 120a can be shielded, so as to avoid the conductive protection sheet 230 being exposed between the first housing 210 and the inner surface of the notch 120a.

[0139] An embodiment of the present application provides a battery device, including a battery cell and the electronic control device in any one of the above embodiments, and the electronic control device is electrically connected to the battery cell.

[0140] An embodiment of the present application further provides an electrical device, including the battery device in any one of the above embodiments, and the battery device is used to provide electrical energy for the electrical device.

[0141] For the above battery device and electrical device, the gas generator 220 generates gas in response to a trigger signal. The breaking member 240 located in the first housing 210 is pushed towards the first opening 210a under the action of the gas generated by the gas generator 220 to break the conductive protection sheet 230, so that the conductive component 300 can be opened at the conductive protection sheet 230, and the protected circuit can be disconnected and protected in time.

[0142] When manufacturing the circuit breaker 200, the manufacturer of the circuit breaker 200 may not set a weak point on the conductive protection sheet 230 first and assemble the circuit breaker 200 first. Before the circuit breaker 200 needs to be assembled inside the battery device, the manufacturer of the battery device may remove the conductive protection sheet 230 from the first housing 210, select the position of the weak point according to the characteristics of the protected circuit, then process a weak point 230a on the conductive protection sheet 230, and finally assemble the conductive protection sheet 230 to the first housing 210. Since the conductive protection sheet 230 covers the outside of the first opening 210a of the first housing 210, whether the conductive protection sheet 230 is disassembled from or installed on the first housing 210, it is not necessary to disassemble and assemble other components (such as the gas generator 220 and the breaking member 240) inside the first housing 210, which facilitates the manufacturer of the battery device to flexibly set the position of the weak point 230a according to the characteristics of the protected circuit and improves the applicability to the protected circuit. Moreover, by arranging the connection structure formed by connecting the conductive component and the conductive protection sheet on the inner surface of the housing, and the connection structure is integrally formed with the housing, there is no need to use other connecting parts to connect the connection structure with the housing, thus reducing the cost of the connecting parts and the occupation of space.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electronic control device, characterized in that, The electronic control device includes: a housing (100), a circuit breaker (200), and a conductive component (300); the circuit breaker (200) includes: A first housing (210), located inside the housing (100), and one end of the first housing (210) has a first opening (210a); A gas generator (220), provided in the first housing (210), for generating gas in response to a trigger signal; A conductive protection sheet (230), connected to the first housing (210) and covering the outside of the first opening (210a), and two ends of the conductive protection sheet (230) are respectively connected to the conductive component (300) and are connected in series to the conductive component (300); and A breaking member (240), located inside the first housing (210), and can be pushed towards the first opening (210a) under the action of the gas generated by the gas generator (220) to break the conductive protection sheet (230); Wherein, the connection structure formed by connecting the conductive component (300) and the conductive protection sheet (230) is provided on the inner surface of the housing (100), and the connection structure is integrally formed with the housing (100).

2. The electronic control device according to claim 1, characterized in that, The conductive protection sheet (230) includes: a protection sheet main body (233), a first connection sheet (231), and a second connection sheet (232), the first connection sheet (231) and the second connection sheet (232) are respectively connected to the conductive component (300) and are respectively attached to the inner surface of the housing (100); The protection sheet main body (233) is configured as a groove structure, and the bottom wall (233a) of the groove structure covers the outside of the first opening (210a); the opposite two side walls of the groove structure are respectively attached to both sides of the first housing (210) and are respectively connected to the first connection sheet (231) and the second connection sheet (232).

3. The electronic control device according to claim 2, wherein The housing (100) includes a first housing wall (120), and the connection structure is provided on the inner surface of the first housing wall (120); The concave direction of the groove structure is along a first direction, wherein the first direction points towards the inside of the housing (100) along the thickness direction of the first housing wall (120), or is perpendicular to the thickness direction of the first housing wall (120).

4. The electronic control device according to claim 2, wherein The circuit breaker (200) further includes a second housing (250), and the second housing (250) is connected to the first housing (210); The second housing (250) includes a bottom plate (251) and a plurality of side plates (252) connected to the bottom plate (251), the bottom plate (251) is disposed opposite to the protection sheet main body (233); the plurality of side plates (252) are sequentially connected along the circumference of the bottom plate (251) and are located on the side of the bottom plate (251) close to the protection sheet main body (233).

5. The electronic control device according to claim 4, characterized in that, A plurality of the side plates (252) are sequentially connected end to end along the circumferential direction of the bottom plate (251) to form a closed structure along the circumferential direction of the bottom plate (251); the gas generator (220) is located on a side of the breaking member (240) away from the protection piece main body (233).

6. The electronic control device according to claim 4, characterized in that The housing (100) includes a first shell wall (120), and the connecting structure is arranged on the inner surface of the first shell wall (120); the depression direction of the groove structure is along a first direction, wherein the first direction points to the inside of the housing (100) along the thickness direction of the first shell wall (120); A notch (120a) is provided on one side of the first shell wall (120) along a second direction, and the second direction is perpendicular to the first direction; one end of the bottom plate (251) close to the outside of the housing (100) along the second direction and a plurality of the side plates (252) jointly define a second opening (250a); the gas generator (220) is arranged at one end of the first housing (210) close to the outside of the housing (100) along the second direction.

7. The electronic control device according to claim 6, characterized in that, One ends of a plurality of the side plates (252) away from the bottom plate (251) jointly define a third opening (250b); One end of the first housing (210) away from the protection piece main body (233) extends out of the third opening (250b) and is located in the notch (120a); the second housing (250) further includes a cover plate (253), and the cover plate (253) is located between the first housing (210) and the inner surface of the notch (120a).

8. The electronic control device according to claim 4, characterized in that The second housing (250) is an arc extinguishing housing, and an arc extinguishing device is arranged inside.

9. The electronic control device according to claim 1, wherein The housing (100) includes a box body and a box cover, the box cover is connected to the box body and covers the box opening of the box body; the connecting structure is arranged on the inner surface of the box cover.

10. The electronic control device according to claim 1, characterized in that The gas generator (220) is a gunpowder gas generator.

11. A battery device, characterized in that, It includes a battery cell and the electric control device according to any one of claims 1 to 10, and the electric control device is electrically connected to the battery cell.

12. An electrical device, characterized in that, It includes the battery device according to claim 11, and the battery device is used to supply electric energy to the electric device.

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