Circuit breaker, battery system and electric equipment

Abstract

The embodiment of the utility model provides a circuit breaker, a battery system and electric equipment, and relates to the technical field of circuit breakers, the circuit breaker comprises a shell, a conductive acquisition assembly and a trigger mechanism, the shell is internally provided with a mounting cavity, and the conductive acquisition assembly and the trigger mechanism are both used for being electrically connected with a control part. The conductive collection assembly is connected to the shell, part of the conductive collection assembly is located in the installation cavity, and the conductive collection assembly is used for communicating with the main loop and collecting information. The trigger mechanism is connected to the shell and extends into the mounting cavity, and the trigger mechanism is used for cutting off the conductive collection assembly. According to the circuit breaker provided by the embodiment of the invention, the integration degree is higher, the occupied space is smaller, wiring is convenient, and the space utilization rate and the safety are improved.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and more particularly to a circuit breaker, battery system and electrical equipment. Background Technology

[0002] Circuit breakers or fuses are commonly used in electrical circuits to automatically disconnect the circuit when a power line fault occurs, thus protecting electrical equipment. For example, circuit breakers used in automotive batteries can be called smart fuses, intelligent fuses, activated fuses, or explosion fuses. They are stored in the battery pack and are commonly used for overcurrent protection in high-voltage circuits or for vehicle collision protection. When a short circuit occurs in the high-voltage circuit or other vehicle safety events under low-current conditions, the battery management system (BMS) or vehicle control system controls the trigger mechanism in the circuit breaker to break the copper busbar, protecting the vehicle's high voltage.

[0003] In related technologies, circuit breakers are usually used in conjunction with current acquisition devices or Hall sensors. By first acquiring signals such as voltage and calculating the current, the system determines whether the fuse needs to be triggered based on the results.

[0004] However, the integration of the aforementioned circuit breakers is not high enough, the wiring is cumbersome, and it affects the space utilization within the battery pack. Utility Model Content

[0005] Based on this, this application provides a circuit breaker, a battery system, and an electrical device to solve the problem of insufficient integration in existing circuit breakers.

[0006] In a first aspect, this application provides a circuit breaker, including a housing, a conductive acquisition component, and a triggering mechanism;

[0007] The housing has an installation cavity, and the conductive acquisition component and triggering mechanism are used for electrical connection with the control components.

[0008] The conductive acquisition component is connected to the housing, and part of the conductive acquisition component is located in the mounting cavity. The conductive acquisition component is used to connect the main circuit and the acquired information.

[0009] The trigger mechanism is attached to the housing and extends into the mounting cavity. The trigger mechanism is used to cut off the conductive acquisition component.

[0010] In one possible implementation, the conductive acquisition component includes a conductive element and an acquisition circuit board. The conductive element includes a sampling segment and at least two connecting segments, which are respectively connected to both sides of the sampling segment. A triggering mechanism is used to cut off the sampling segment or the connecting segment.

[0011] The acquisition circuit board is equipped with at least one of a current acquisition module and a temperature acquisition module. The current acquisition module is connected to two connection sections respectively, and the temperature acquisition module is in contact with the sampling section.

[0012] In one possible implementation, at least one end of the connecting segment opposite to the sampling segment extends out of the housing, and at least one connecting segment has a connecting portion on the side outside the housing for connecting the main circuit.

[0013] In one possible implementation, the sampling segment or connection segment has a weak part, and the triggering mechanism is set accordingly to the weak part.

[0014] In one possible implementation, the acquisition circuit board is also provided with an output interface that extends through the housing and is used for electrical connection with the control components.

[0015] In one possible implementation, the conductive acquisition component also includes an arc-extinguishing fuse located on the side opposite to the triggering mechanism and connected to the two connecting segments.

[0016] When the triggering mechanism cuts off the sampling section or connection section, the arc-extinguishing fuse is used for rapid melting.

[0017] In one possible implementation, the arc-extinguishing fuse includes at least one arc-extinguishing fuse plate and two connecting plates, with a plurality of fuse portions on the arc-extinguishing fuse plate;

[0018] Two connecting plates are respectively connected to both sides of the arc-extinguishing fuse plate, and the two connecting plates are connected to the two connecting sections respectively.

[0019] In one possible implementation, an arc-extinguishing medium is also provided on the side of the conductive acquisition component away from the triggering mechanism.

[0020] In one possible implementation, the triggering mechanism includes a trigger element and a drive assembly. The trigger element is located in the mounting cavity and connected to the drive assembly, which is inserted into the housing and used for electrical connection with the control element.

[0021] The driving component is used to drive the trigger to move toward the conductive acquisition component, thereby disconnecting the conductive acquisition component.

[0022] In one possible implementation, the drive assembly includes a connected gas generator and an igniter, and the drive assembly also has a trigger interface electrically connected to the igniter.

[0023] The trigger interface extends through the housing and is used for electrical connection with the control unit. The igniter is used to release pressurized gas from the gas generator to move the trigger.

[0024] In one possible implementation, the housing includes an upper shell assembly, a lower shell assembly, and a plurality of fasteners. The upper shell assembly has a first opening facing the lower shell assembly, and a triggering mechanism is connected to the upper shell assembly and located in the first opening.

[0025] The lower shell assembly has a second opening facing the upper shell assembly. The upper shell assembly and the lower shell assembly are spliced ​​together and locked by fasteners so that the first opening and the second opening form an installation cavity.

[0026] There are at least two first sockets between the upper shell assembly and the lower shell assembly, and two connecting sections are correspondingly inserted into the two first sockets.

[0027] In one possible implementation, the upper shell assembly includes a cover plate and an upper shell sleeve, the cover plate and the upper shell sleeve forming a first opening, and a triggering mechanism connected to the cover plate.

[0028] The lower shell assembly includes a bottom plate and a lower shell sleeve. The bottom plate and the lower shell sleeve form a second opening. The first insertion hole is located on at least one of the upper shell sleeve and the lower shell sleeve.

[0029] Fasteners pass through the cover plate, upper shell, and lower shell in sequence and are detachably connected to the base plate.

[0030] In one possible implementation, at least one of the upper and lower shells is provided with a second socket for a connector to pass through to connect to the acquisition circuit board.

[0031] And / or, the upper housing is also provided with a third socket for a connector to pass through when connected to the trigger mechanism.

[0032] Secondly, this application also provides a battery system including a main circuit and a circuit breaker connected to the main circuit, which is one of the first aspects provided.

[0033] In one possible implementation, it also includes a battery cell, a battery management module, and a connector, with the conductive acquisition component and triggering mechanism on the circuit breaker electrically connected to the battery management module, respectively.

[0034] The positive terminal of the battery cell is electrically connected in sequence through the conductive acquisition component on the circuit breaker, the positive terminal of the first contactor, and the connector.

[0035] The negative terminal of the battery cell is electrically connected to the negative terminal of the connector via a second contactor, and the connector is used to electrically connect to the power-consuming unit.

[0036] In one possible implementation, the end of the conductive acquisition component on the circuit breaker connected to the first contactor is also connected in sequence to the positive terminal of the connector via a pre-charge resistor, a third contactor, and the connector.

[0037] And / or, the negative terminal of the battery cell is also electrically connected to a second contactor via a fuse.

[0038] Thirdly, this application also provides an electrical device, including a device body, an electrical unit on the device body, and a circuit breaker provided in the first aspect on the main circuit of the electrical unit.

[0039] Alternatively, the power unit may be powered by any of the battery systems provided in the third aspect.

[0040] The circuit breaker, battery system, and electrical equipment provided in this application include a housing, a conductive acquisition component, and a triggering mechanism. An installation cavity is provided within the housing for mounting at least the conductive acquisition component and the triggering mechanism. Both the conductive acquisition component and the triggering mechanism are electrically connected to a control component. By connecting the conductive acquisition component to the housing and partially residing it within the installation cavity, the triggering mechanism can disconnect it when necessary. The conductive acquisition component connects the main circuit and collects information, which can be at least one of current and temperature. The conductive acquisition component transmits the collected information to the control component. By connecting the triggering mechanism to the housing and extending it into the installation cavity, when the collected information exceeds a preset value, the control component controls the triggering mechanism to disconnect the conductive acquisition component, thus providing power-off protection for the main circuit. Therefore, the circuit breaker provided in this application, through its conductive acquisition component, can both conduct the main circuit and collect information such as current or temperature, resulting in higher integration, smaller footprint, simpler circuit wiring, and improved space utilization and safety. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of the circuit breaker provided in the embodiments of this application;

[0043] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along section AA in the middle;

[0044] Figure 3 for Figure 2 A schematic diagram of the structure of the conductive acquisition component;

[0045] Figure 4 for Figure 3 A structural diagram from another perspective;

[0046] Figure 5 for Figure 1Schematic diagram of the exploded structure of the middle shell;

[0047] Figure 6 This is a schematic diagram of the connection relationship of the battery system provided in an embodiment of this application.

[0048] Figure label:

[0049] 100: Casing;

[0050] 101: Installation cavity;

[0051] 102: Arc-extinguishing medium;

[0052] 110: Upper shell assembly;

[0053] 111: Cover plate;

[0054] 1101: First socket;

[0055] 1102: Second socket;

[0056] 1103: Third socket;

[0057] 112: Upper shell sleeve;

[0058] 120: Lower shell assembly;

[0059] 121: Base plate;

[0060] 122: Lower shell sleeve;

[0061] 130: Fasteners;

[0062] 200: Conductive acquisition component;

[0063] 210: Conductive components;

[0064] 211: Sampling segment;

[0065] 212: Connecting segment;

[0066] 2121: Connecting part;

[0067] 220: Data acquisition circuit board;

[0068] 221: Output interface;

[0069] 230: Arc-extinguishing fuse;

[0070] 231: Arc-extinguishing fuse plate;

[0071] 2311: Fuse section;

[0072] 232: Connecting plate;

[0073] 300: Trigger mechanism;

[0074] 310: Trigger;

[0075] 320: Driver component;

[0076] 321: Trigger interface;

[0077] 400: Battery cell;

[0078] 500: Battery Management Module;

[0079] 600: Connector;

[0080] 700: Pre-charge resistor;

[0081] 800: Fuse. Detailed Implementation

[0082] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0083] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0084] As mentioned in the background section, circuit breakers typically require the use of current acquisition devices or Hall effect sensors. This means that each of these devices occupies a separate space within the battery pack, inevitably impacting space utilization. Furthermore, each device requires individual wiring, leading to complex and messy wiring. Therefore, the integration level of such circuit breakers is insufficient.

[0085] To address the aforementioned problems in the prior art, this application provides a circuit breaker, a battery system, and an electrical device. The circuit breaker provided by this application includes a housing, a conductive acquisition component, and a triggering mechanism. An installation cavity is provided within the housing for mounting at least the conductive acquisition component and the triggering mechanism. Both the conductive acquisition component and the triggering mechanism are electrically connected to a control component. By connecting the conductive acquisition component to the housing and positioning a portion of the component within the installation cavity, the triggering mechanism can disconnect it when necessary. The conductive acquisition component connects the main circuit and collects information, which can be at least one of current and temperature. The conductive acquisition component transmits the collected information to the control component. By connecting the triggering mechanism to the housing and extending it into the installation cavity, when the collected information exceeds a preset value, the control component controls the triggering mechanism to disconnect the conductive acquisition component, thus providing power-off protection for the main circuit. In other words, the conductive acquisition component can both conduct the main circuit and collect current or temperature information, resulting in higher integration, smaller footprint, simpler circuit wiring, and improved space utilization and safety.

[0086] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0087] Firstly, please refer to Figures 1-5 As shown in the figure, this application provides a circuit breaker, including a housing 100, a conductive acquisition component 200, and a triggering mechanism 300.

[0088] The housing 100 has a mounting cavity 101, and the conductive acquisition component 200 and the triggering mechanism 300 are both used for electrical connection with the control components.

[0089] The conductive acquisition component 200 is connected to the housing 100, and part of the conductive acquisition component 200 is located in the mounting cavity 101. The conductive acquisition component 200 is used to connect the main circuit and acquire information.

[0090] The trigger mechanism 300 is connected to the housing 100 and extends into the mounting cavity 101. The trigger mechanism 300 is used to cut off the conductive acquisition component 200.

[0091] In this embodiment, the housing 100 is used to install at least the conductive acquisition component 200 and the triggering mechanism 300, and has an internal mounting cavity 101. The housing 100 can be assembled from multiple parts or it can be a one-piece molded structure.

[0092] In this embodiment, the conductive acquisition component 200 is used to connect to the main circuit and conduct the main circuit, and also to acquire current information on the main circuit or acquire its own temperature information. The conductive acquisition component 200 can be composed of a conductor and an acquisition component. The conductor is used for large current to pass through, and the acquisition component is used to acquire current or temperature information on the conductor. It can also communicate with the control unit through a wireless module or a wired interface to transmit the acquired information to the control unit.

[0093] It should be noted that the control component can be a battery management module or a controller on the electrical equipment. The main circuit is generally a high-voltage circuit, and the conductive acquisition component 200 can be connected to the positive or negative circuit of the main circuit.

[0094] The conductive acquisition component 200 can be fixed to the housing 100 by means of screwing, snap-fitting, or plugging. Part of the conductive acquisition component 200 is located in the mounting cavity 101 and is in a suspended state, which facilitates the cutting of the conductive acquisition component 200.

[0095] In this embodiment, the triggering mechanism 300 is used to cut off the conductive acquisition component 200 when necessary. If the acquired information exceeds a preset value, the triggering mechanism 300 can be a triggering mechanism composed of a gas generator or other types of electronically controlled triggering mechanisms. Any mechanism capable of cutting off the conductive acquisition component 200 is acceptable.

[0096] The trigger mechanism 300 can be fixed to the housing 100 by means of screwing, snapping, or plugging, and extends to one side of the conductive acquisition component 200 in the mounting cavity 101. The trigger mechanism 300 can be connected to the control component via a wired interface so that the control component can control the action of the trigger mechanism 300.

[0097] Specifically, such as Figure 2 As shown, the two sides of the conductive acquisition component 200 are respectively connected to the positive or negative circuit in the main circuit. On the one hand, the conductive acquisition component 200 can connect to the main circuit, and on the other hand, it can transmit the acquired information to the control unit. When the acquired information exceeds the preset value, the control unit controls the trigger mechanism 300 to cut off the part of the conductive acquisition component 200 that connects to the main circuit, such as cutting off the middle part of the conductive acquisition component 200, to quickly cut off the power and perform protection.

[0098] It should be noted that the preset value can be determined according to the specific power consumption situation. It can be a preset battery or a preset temperature, etc., and the specific value can be determined according to actual needs.

[0099] Compared to existing circuit breakers that only contain copper conductors and triggering mechanisms, the circuit breaker in this embodiment does not require additional current acquisition devices or Hall sensors, resulting in higher integration, smaller footprint, simpler circuit wiring, and improved space utilization and safety.

[0100] Therefore, the circuit breaker provided in this embodiment includes a housing 100, a conductive acquisition component 200, and a triggering mechanism 300. An installation cavity 101 is provided within the housing 100 for at least mounting the conductive acquisition component 200 and the triggering mechanism 300. Both the conductive acquisition component 200 and the triggering mechanism 300 are electrically connected to a control component. By connecting the conductive acquisition component 200 to the housing 100 and positioning a portion of the conductive acquisition component 200 within the installation cavity 101, the triggering mechanism 300 can disconnect it when necessary. The conductive acquisition component 200 connects the main circuit and the acquired information, which can be at least one of current and temperature. The conductive acquisition component 200 transmits the acquired information to the control component. By connecting the triggering mechanism 300 to the housing 100 and extending it into the installation cavity 101, when the acquired information exceeds a preset value, the control component controls the triggering mechanism 300 to disconnect the conductive acquisition component 200, thus providing power-off protection for the main circuit. In other words, the conductive acquisition component 200 can not only conduct the main circuit, but also collect current or temperature information. It has a higher degree of integration, occupies less space, makes the circuit wiring simpler, and improves space utilization and safety.

[0101] In one possible design, the conductive acquisition component 200 includes a conductive element 210 and an acquisition circuit board 220. The conductive element 210 includes a sampling segment 211 and at least two connecting segments 212, which are respectively connected to both sides of the sampling segment 211. The triggering mechanism 300 is used to cut off the sampling segment 211 or the connecting segment 212.

[0102] The acquisition circuit board 220 is equipped with at least one of a current acquisition module and a temperature acquisition module. The current acquisition module is connected to two connection sections 212 respectively, and the temperature acquisition module is in contact with the sampling section 211.

[0103] Specifically, such as Figure 3 , Figure 4 As shown, the conductive element 210 is elongated, comprising a sampling section 211 in the middle and connecting sections 212 at both ends. The sampling section 211 can be a sampling resistor, which can be an alloy sheet, such as a copper alloy, having low resistance. The connecting sections 212 can be copper busbars. The two connecting sections 212 are respectively connected to both sides of the sampling section 211 and can be integrally formed. Furthermore, the triggering mechanism 300 can be correspondingly positioned on one side of the sampling section 211 or the connecting section 212 to cut off the sampling section 211 or the connecting section 212.

[0104] When the main circuit is energized, the current passing through sampling section 211 creates a voltage difference between the two connecting sections 212. Furthermore, sampling section 211 generates heat to facilitate data acquisition by the acquisition circuit board 220. Especially when an abnormality occurs in the main circuit, such as a short circuit, excessive current will flow through sampling section 211, causing its temperature to rise and generating a large amount of heat.

[0105] Therefore, a current acquisition module and a temperature acquisition module can be set on the acquisition circuit board 220. The current acquisition module is connected to the two connection sections 212 respectively. It can transmit the differential voltage signal between the two connection sections 212 to the control component after differential amplification, calculation into current, analog-to-digital conversion, and so on, so as to monitor the current in the main circuit.

[0106] Furthermore, the temperature acquisition module is connected to the sampling section 211, and the thermistor on it can transmit the temperature signal from the sampling section 211 to the control unit after differential amplification and analog-to-digital conversion, so as to monitor the temperature of the conductive acquisition component 200 itself. The specific types of current acquisition modules and temperature acquisition modules can be determined according to actual needs, and no specific limitation is made in this embodiment.

[0107] Furthermore, in this embodiment, at least one end of the connecting segment 212 that is away from the sampling segment 211 extends to the outside of the housing 100, and at least one connecting segment 212 has a connecting portion 2121 on the side outside the housing 100, the connecting portion 2121 being used to connect the main circuit.

[0108] Specifically, such as Figures 1 to 4 As shown, the ends of both connecting segments 212 that are away from the sampling segment 211 extend outside the housing 100 so as to be connected in the main circuit. Moreover, the connecting segment 212 has a connecting part 2121, such as a connecting hole or a connecting post, on the side outside the housing 100.

[0109] This facilitates wiring operations. The specific lengths of the two connecting sections 212 extending beyond the housing 100, as well as the specific type, quantity, and position of the connecting parts 2121, can be determined according to actual needs, and are not specifically limited in this embodiment.

[0110] Furthermore, in this embodiment, the sampling segment 211 or the connecting segment 212 has a weak part, and the triggering mechanism 300 is set corresponding to the weak part.

[0111] This configuration facilitates the triggering mechanism 300 in cutting off the sampling segment 211 or the two connecting segments 212. For example, as shown... Figure 3 As shown, the weak part coincides with the sampling section 211 and is subjected to grooving and thinning treatment. The triggering mechanism 300 corresponds to the weak part so as to cut off the weak part.

[0112] Of course, the weak part can also be set to other structural types, or it can be located on one of the two connecting segments 212. The specific structure and location of the weak part can be determined according to actual needs, and no restrictions are imposed in this embodiment.

[0113] Furthermore, in this embodiment, the acquisition circuit board 220 is also provided with an output interface 221, which penetrates the housing 100 and is used for electrical connection with the control components.

[0114] Specifically, such as Figure 1 , Figure 3 As shown, the output interface 221 is used for data transmission. It can be a multi-pin connector, etc. The output interface 221 is connected to the current acquisition module and the temperature acquisition module. The output interface 221 passes through one side of the housing 100, which facilitates connection to the control components via data lines or control lines.

[0115] The specific type and number of output interfaces 221 can be determined according to actual needs, and no specific limitation is made in this embodiment.

[0116] Furthermore, in this embodiment, the conductive acquisition component 200 also includes an arc-extinguishing fuse 230, which is located on the side away from the triggering mechanism 300 and connected to the two connecting sections 212.

[0117] When the triggering mechanism 300 cuts off the sampling section 211 or the connecting section 212, the arc-extinguishing fuse 230 is used for rapid melting.

[0118] Specifically, such as Figure 3 , Figure 4 As shown, the arc-extinguishing fuse 230 is used to extinguish the arc when the conductive component 210 breaks. It is connected to two connecting sections 212 on the side away from the triggering mechanism 300, and at least covers the area of ​​the conductive component 210 that will be cut off.

[0119] In this way, when the triggering mechanism 300 cuts off the conductive component 210, the large current between the two connecting sections 212 flows through the arc-extinguishing fuse 230, causing the arc-extinguishing fuse 230 to melt quickly, thus avoiding safety hazards such as arcing between the two connecting sections 212.

[0120] For example, in this embodiment, the arc-extinguishing fuse 230 includes at least one arc-extinguishing fuse plate 231 and two connecting plates 232, and the arc-extinguishing fuse plate 231 has a plurality of fuse portions 2311.

[0121] Two connecting plates 232 are respectively connected to both sides of the arc-extinguishing fuse plate 231, and the two connecting plates 232 are correspondingly connected to the two connecting sections 212.

[0122] Specifically, such as Figure 3 , Figure 4 As shown, the arc-extinguishing fuse plate 231 is a thin plate structure. Several fusing parts 2311 are provided on the arc-extinguishing fuse plate 231. A row of through holes can be opened on the arc-extinguishing fuse plate 231 to reduce the cross-sectional area of ​​the arc-extinguishing fuse plate 231 and form a fusing part 2311 that is easy to melt.

[0123] Moreover, the arc-extinguishing fuse plate 231 can be one or multiple plates spaced apart, with two connecting plates 232 connected to both sides of the arc-extinguishing fuse plate 231. The two connecting plates 232 are connected to the two connecting sections 212 respectively, roughly in the shape of a square.

[0124] The fusible part 2311 can also be formed by thinning, and the arc-extinguishing fusible plate 231 can be set in more quantities. This can be determined according to actual needs, and no specific limitation is made in this embodiment.

[0125] Furthermore, in this embodiment, an arc-extinguishing medium 102 is also provided on the side of the conductive acquisition component 200 away from the triggering mechanism 300.

[0126] For example, such as Figure 2 As shown, the arc-extinguishing medium 102 can be a type of silica sand, etc., which fills the mounting cavity 101 on the side away from the triggering mechanism 300. It can absorb the heat generated by the arc-extinguishing fuse 230 during the melting process and ensure insulation. The specific material of the arc-extinguishing medium 102 can be determined according to actual needs, and is not specifically limited in this embodiment.

[0127] In some embodiments, the triggering mechanism 300 includes a trigger 310 and a drive assembly 320. The trigger 310 is located in the mounting cavity 101 and connected to the drive assembly 320. The drive assembly 320 is inserted into the housing 100 and is used for electrical connection with the control component.

[0128] The drive component 320 is used to drive the trigger 310 to move toward the conductive acquisition component 200 to disconnect the conductive acquisition component 200.

[0129] Specifically, such as Figure 2 As shown, the trigger 310 is used to cut off the conductive acquisition component 200, and it can be a plate-shaped or block-shaped structure, such as a knife switch. The drive component 320 is used to drive the trigger 310 to move, and it can be a gas generator or other drive mechanism. The drive component 320 can be inserted into the housing 100 and connected to the trigger 310. The trigger 310 extends to one side of the conductive acquisition component 200 in the mounting cavity 101. The drive component 320 is electrically connected to the control component.

[0130] In this way, when the collected information exceeds the preset value, the control component can control the drive component 320 to drive the trigger component 310 to move, thereby cutting off the conductive acquisition component 200.

[0131] Furthermore, in this embodiment, the drive assembly 320 is provided with a gas generator and an igniter connected together, and the drive assembly 320 also has a trigger interface 321 that is electrically connected to the igniter.

[0132] The trigger interface 321 penetrates the housing 100 and is used for electrical connection with the control unit. The igniter is used to release pressurized gas from the gas generator to move the trigger 310.

[0133] This setting, such as Figure 2 As shown, the trigger interface 321 can be a plug-in interface, which facilitates electrical connection with the control unit via a data line or control line. The control unit can send an ignition signal to trigger the igniter to ignite, causing the gas generator to release pressurized gas instantly, which pushes the trigger 310 to quickly impact and cut off the conductive acquisition component 200, thereby achieving the purpose of quickly protecting the main circuit.

[0134] The specific types of trigger interface 321, gas generator, and igniter can be determined according to actual needs, and are not specifically limited in this embodiment.

[0135] In some embodiments, the housing 100 includes an upper housing assembly 110, a lower housing assembly 120, and a plurality of fasteners 130. The upper housing assembly 110 has a first opening facing the lower housing assembly 120. A triggering mechanism 300 is connected to the upper housing assembly 110 and is located in the first opening.

[0136] The lower shell assembly 120 has a second opening facing the upper shell assembly 110. The upper shell assembly 110 and the lower shell assembly 120 are spliced ​​together and locked by fasteners 130 so that the first opening and the second opening form an installation cavity 101.

[0137] There are at least two first sockets 1101 between the upper shell assembly 110 and the lower shell assembly 120, and two connecting segments 212 are correspondingly inserted into the two first sockets 1101.

[0138] Specifically, such as Figure 5 As shown, the upper shell assembly 110 can be assembled from several parts or it can be a one-piece molded structure. The upper shell assembly 110 has a first opening on one side, and the triggering mechanism 300 can be located in the first opening for easy installation.

[0139] Moreover, the lower shell assembly 120 can be assembled from several parts or it can be a one-piece molded structure. The lower shell assembly 120 has a second opening on one side, which is opposite to the first opening. The second opening can be used to accommodate part of the conductive acquisition component 200 or to fill the arc extinguishing medium 102.

[0140] Among them, such as Figure 5 As shown, fastener 130 can be a component such as a screw. Figure 1The diagram shows four fasteners 130 that connect and secure the upper housing assembly 110 to the lower housing assembly 120. This facilitates machining, installation, and other processes.

[0141] Furthermore, in this embodiment, the upper shell assembly 110 includes a cover plate 111 and an upper shell sleeve 112, with the cover plate 111 and the upper shell sleeve 112 forming a first opening, and the triggering mechanism 300 connected to the cover plate 111.

[0142] The lower shell assembly 120 includes a base plate 121 and a lower shell sleeve 122. The base plate 121 and the lower shell sleeve 122 form a second opening. The first insertion hole 1101 is located on at least one of the upper shell sleeve 112 and the lower shell sleeve 122.

[0143] Fastener 130 passes through cover plate 111, upper shell sleeve 112, and lower shell sleeve 122 in sequence and is detachably connected to base plate 121.

[0144] Specifically, such as Figure 5 As shown, the cover plate 111 may have a protrusion, the interior of which is a hollow structure, forming part of the first opening, facilitating the design of its shape according to the trigger mechanism 300. The cover plate 111 has multiple through holes on its periphery to allow fasteners 130 to pass through; the number of through holes on the cover plate 111 corresponds to the number of fasteners 130. The upper shell 112 may be a rectangular hollow structure, with the upper and lower parts connected. The upper shell 112 also has multiple through holes on its periphery to allow fasteners 130 to pass through.

[0145] Furthermore, the base plate 121 has a plate-like structure with multiple threaded holes on its periphery for easy screwing with the fastener 130. The lower housing 122 can also be a rectangular hollow structure, with the upper and lower parts connected. The lower housing 122 also has multiple through holes on its periphery for the fastener 130 to pass through. A portion of the first insertion hole 1101 is located on the side of the upper housing 112 near the lower housing 122, and a portion of the first insertion hole 1101 is located on the side of the lower housing 122 near the upper housing 112, i.e., it is formed by two notches, which facilitates installation.

[0146] In this way, when the cover plate 111, the upper shell sleeve 112, the lower shell sleeve 122 and the base plate 121 are sequentially spliced ​​together, the fasteners 130 are sequentially passed through each through hole and then connected and locked with the threaded hole, which facilitates single-piece processing, etc.

[0147] Furthermore, in one specific embodiment, at least one of the upper shell 112 and the lower shell 122 is provided with a second insertion hole 1102, which is used for a connector connected to the acquisition circuit board 220 to pass through.

[0148] And / or, the upper housing 112 is also provided with a third socket 1103, through which a connector for connection with the trigger mechanism 300 passes.

[0149] Specifically, such as Figure 5 As shown, the second insertion hole 1102 can be formed by the notch on the upper shell 112 and the notch on the lower shell 122, and the notch can also be located on one of the upper shell 112 and the lower shell 122.

[0150] The third socket 1103 is located on the side of the upper shell 112 away from the lower shell 122, and it passes through the first opening to facilitate wiring. The specific type and position of the second socket 1102 and the third socket 1103 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0151] Secondly, such as Figure 6 As shown, this application embodiment also provides a battery system, including a main circuit and a circuit breaker provided in any of the above embodiments connected to the main circuit.

[0152] The structure of the circuit breaker has been described in detail in the above embodiments, and will not be repeated here.

[0153] The battery system provided in this application embodiment includes a circuit breaker comprising a housing 100, a conductive acquisition component 200, and a triggering mechanism 300. An installation cavity 101 is provided within the housing 100 for mounting at least the conductive acquisition component 200 and the triggering mechanism 300. Both the conductive acquisition component 200 and the triggering mechanism 300 are electrically connected to a control unit. By connecting the conductive acquisition component 200 to the housing 100 and positioning a portion of the conductive acquisition component 200 within the installation cavity 101, the triggering mechanism 300 can disconnect it when necessary. The conductive acquisition component 200 connects the main circuit and the acquired information, which can be at least one of current and temperature. The conductive acquisition component 200 transmits the acquired information to the control unit. By connecting the triggering mechanism 300 to the housing 100 and extending it into the installation cavity 101, when the acquired information exceeds a preset value, the control unit controls the triggering mechanism 300 to disconnect the conductive acquisition component 200, thus providing power-off protection for the main circuit. In other words, the conductive acquisition component 200 can not only conduct the main circuit, but also collect current or temperature information. It has a higher degree of integration, occupies less space, makes the circuit wiring simpler, and improves space utilization and safety.

[0154] In some embodiments, the circuit breaker also includes a battery cell 400, a battery management module 500, and a connector 600, wherein the conductive acquisition component 200 and the triggering mechanism 300 on the circuit breaker are electrically connected to the battery management module 500.

[0155] The positive terminal of the battery unit 400 is electrically connected in sequence through the conductive acquisition component 200 on the circuit breaker and the positive terminal of the first contactor and connector 600.

[0156] The negative terminal of the battery cell 400 is electrically connected to the negative terminal of the connector 600 via a second contactor. The connector 600 is used to electrically connect to the power-consuming unit.

[0157] Specifically, such as Figure 6 As shown, the conductive acquisition component 200 on the circuit breaker is electrically connected to the battery management module 500 and is used to transmit acquisition information such as current or temperature to the battery management module 500. The battery management module 500 is electrically connected to the triggering mechanism 300 on the circuit breaker and is used to control the triggering mechanism 300 to cut off the conductive acquisition component 200 when the acquired information exceeds a preset value.

[0158] On one hand, the positive terminal of the battery cell 400 is electrically connected to one connection segment 212 of the conductive acquisition component 200, and the other connection segment 212 of the conductive acquisition component 200 is electrically connected to one end of the first contactor. The other end of the first contactor is electrically connected to the positive terminal of the connector 600. On the other hand, the negative terminal of the battery cell 400 is electrically connected to one end of the second contactor, and the other end of the second contactor is electrically connected to the negative terminal of the connector 600. Furthermore, the connector 600 is then electrically connected to a power-consuming unit, such as a vehicle motor.

[0159] For example, when the above-mentioned battery system is applied to a new energy vehicle, during operation, after the vehicle is powered on, the battery management module 500 performs a self-test. If high voltage is not allowed, the first contactor and the second contactor are disconnected. If high voltage is allowed, the first contactor and the second contactor are powered on in sequence, and the circuit breaker starts to work. The conductive acquisition component 200 conducts the main circuit on the one hand, and continuously transmits the acquired information to the battery management module 500 on the other hand. If the acquired information does not exceed the preset value, it maintains normal operation. If the acquired information exceeds the preset value, the battery management module 500 controls the trigger mechanism 300 to cut off the conductive acquisition component 200 to protect the main circuit from power failure.

[0160] The conductive acquisition component 200 in the circuit breaker is also connected in series in the negative circuit of the main circuit, that is, in series between the negative terminal of the battery unit 400 and the second contactor, and can also play the above-mentioned role. In addition, the specific specifications and models of the battery unit 400, battery management module 500, connector 600, first contactor and second contactor can be determined according to actual needs, and are not specifically limited in this embodiment.

[0161] Furthermore, in this embodiment, the end of the conductive acquisition component 200 on the circuit breaker connected to the first contactor is also connected to the positive terminal of the connector 600 in sequence through the pre-charge resistor 700, the third contactor, and the connector 600.

[0162] And / or, the negative terminal of battery cell 400 is also electrically connected to a second contactor via fuse 800.

[0163] Specifically, such as Figure 6 As shown, the pre-charge resistor 700 is used to reduce the surge of charging current and prevent the instantaneous large current generated by the capacitor when the switching power supply starts up, thus protecting the power switch and circuit. The fuse 800, also known as a conventional fuse, disconnects the main circuit when the current exceeds a preset current, providing multiple layers of protection.

[0164] For example, a connection segment 212 on the conductive acquisition component 200 of the circuit breaker, which is connected to the first contactor, is electrically connected to one end of the pre-charging resistor 700. The other end of the pre-charging resistor 700 is electrically connected to one end of the third contactor, and the other end of the third contactor is then electrically connected to the positive terminal of the connector 600. In this way, when the third contactor is opened first, the instantaneous large current can be reduced, and the first contactor can be opened after the current has stabilized.

[0165] For example, the negative terminal of battery cell 400 is electrically connected to one end of fuse 800, and the other end of fuse 800 is electrically connected to the second contactor, forming a series connection. When the current in the negative terminal circuit of the battery system exceeds the preset current, the main circuit is disconnected.

[0166] The fuse 800 can also be connected in series in the positive circuit of the battery system, such as between the positive terminal of the battery cell 400 and the circuit breaker, thus providing multiple layers of protection. Furthermore, the specific type and specifications of the pre-charge resistor 700 and the third contactor can be determined according to actual needs; this embodiment does not impose specific limitations.

[0167] Thirdly, embodiments of this application also provide an electrical device, including a device body, a power-consuming unit on the device body, and a circuit breaker provided in any of the above embodiments installed on the main circuit of the power-consuming unit. Alternatively, the power-consuming unit is powered by a battery system provided in any of the above embodiments. The electrical device may be a new energy vehicle, a device powered by a power battery, etc.

[0168] The electrical equipment provided in this application embodiment, by configuring the above-mentioned battery system, includes a circuit breaker. The circuit breaker includes a housing 100, a conductive acquisition component 200, and a triggering mechanism 300. By providing an installation cavity 101 within the housing 100, at least the conductive acquisition component 200 and the triggering mechanism 300 are installed. Both the conductive acquisition component 200 and the triggering mechanism 300 are electrically connected to a control component. By connecting the conductive acquisition component 200 to the housing 100 and placing a portion of the conductive acquisition component 200 within the installation cavity 101, the triggering mechanism 300 can cut it off when necessary. The conductive acquisition component 200 connects the main circuit and the acquired information, which can be at least one of current and temperature. The conductive acquisition component 200 transmits the acquired information to the control component. By connecting the triggering mechanism 300 to the housing 100 and extending it into the installation cavity 101, when the acquired information exceeds a preset value, the control component controls the triggering mechanism 300 to cut off the conductive acquisition component 200, thereby providing power-off protection for the main circuit. In other words, the conductive acquisition component 200 can not only conduct the main circuit, but also collect current or temperature information. It has a higher degree of integration, occupies less space, makes the circuit wiring simpler, and improves space utilization and safety.

[0169] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0170] It should be understood that this application is not limited to the precise structures described above and shown in the appendix, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A circuit breaker, characterized in that, It includes a housing (100), a conductive acquisition component (200), and a triggering mechanism (300); The housing (100) has a mounting cavity (101), and the conductive acquisition component (200) and the triggering mechanism (300) are both used for electrical connection with the control component; The conductive acquisition component (200) is connected to the housing (100), and a portion of the conductive acquisition component (200) is located in the mounting cavity (101). The conductive acquisition component (200) is used to connect the main circuit and the acquired information. The triggering mechanism (300) is connected to the housing (100) and extends into the mounting cavity (101). The triggering mechanism (300) is used to cut off the conductive acquisition component (200).

2. The circuit breaker according to claim 1, characterized in that, The conductive acquisition component (200) includes a conductive element (210) and an acquisition circuit board (220). The conductive element (210) includes a sampling segment (211) and at least two connecting segments (212). The two connecting segments (212) are respectively connected to both sides of the sampling segment (211). The triggering mechanism (300) is used to cut off the sampling segment (211) or the connecting segment (212). The acquisition circuit board (220) is provided with at least one of a current acquisition module and a temperature acquisition module. The current acquisition module is connected to the two connection sections (212) respectively, and the temperature acquisition module is in contact with the sampling section (211).

3. The circuit breaker according to claim 2, characterized in that, At least one of the connecting segments (212) extends away from the sampling segment (211) to the outside of the housing (100), and at least one of the connecting segments (212) has a connecting portion (2121) on the side outside the housing (100) for connecting the main circuit.

4. The circuit breaker according to claim 2, characterized in that, The sampling segment (211) or the connecting segment (212) has a weak part, and the triggering mechanism (300) is provided corresponding to the weak part.

5. The circuit breaker according to claim 2, characterized in that, The acquisition circuit board (220) is also provided with an output interface (221), which penetrates the housing (100) and is used to electrically connect with the control component.

6. The circuit breaker according to claim 2, characterized in that, The conductive acquisition component (200) also includes an arc-extinguishing fuse (230), which is located on the side away from the triggering mechanism (300) and connected to the two connecting sections (212); When the triggering mechanism (300) cuts off the sampling segment (211) or the connecting segment (212), the arc-extinguishing fuse (230) is used for rapid melting.

7. The circuit breaker according to claim 6, characterized in that, The arc-extinguishing fuse (230) includes at least one arc-extinguishing fuse plate (231) and two connecting plates (232), and the arc-extinguishing fuse plate (231) has a plurality of fuse portions (2311). The two connecting plates (232) are respectively connected to both sides of the arc-extinguishing fuse plate (231), and the two connecting plates (232) are correspondingly connected to the two connecting segments (212).

8. The circuit breaker according to claim 6, characterized in that, An arc-extinguishing medium (102) is also provided on the side of the conductive acquisition component (200) away from the triggering mechanism (300).

9. The circuit breaker according to claim 1, characterized in that, The triggering mechanism (300) includes a trigger element (310) and a drive assembly (320). The trigger element (310) is located in the mounting cavity (101) and connected to the drive assembly (320). The drive assembly (320) is inserted into the housing (100) and is used for electrical connection with the control element. The drive component (320) is used to drive the trigger (310) to move toward the conductive acquisition component (200) to disconnect the conductive acquisition component (200).

10. The circuit breaker according to claim 9, characterized in that, The drive assembly (320) is provided with a gas generator and an igniter connected to each other, and the drive assembly (320) also has a trigger interface (321) that is electrically connected to the igniter. The trigger interface (321) penetrates the housing (100) and is used for electrical connection with the control unit. The igniter is used to cause the gas generator to release pressurized gas and push the trigger (310) to move.

11. The circuit breaker according to any one of claims 2 to 8, characterized in that, The housing (100) includes an upper housing assembly (110), a lower housing assembly (120), and a plurality of fasteners (130). The upper housing assembly (110) has a first opening facing the lower housing assembly (120). The triggering mechanism (300) is connected to the upper housing assembly (110) and located in the first opening. The lower shell assembly (120) has a second opening facing the upper shell assembly (110). The upper shell assembly (110) is spliced ​​with the lower shell assembly (120) and locked by the fastener (130) so that the first opening and the second opening form the mounting cavity (101). The upper shell assembly (110) and the lower shell assembly (120) have at least two first sockets (1101), and the two connecting segments (212) are correspondingly inserted into the two first sockets (1101).

12. The circuit breaker according to claim 11, characterized in that, The upper shell assembly (110) includes a cover plate (111) and an upper shell sleeve (112), the cover plate (111) and the upper shell sleeve (112) forming the first opening, and the triggering mechanism (300) is connected to the cover plate (111); The lower shell assembly (120) includes a base plate (121) and a lower shell sleeve (122), the base plate (121) and the lower shell sleeve (122) forming a second opening, and the first insertion hole (1101) is located on at least one of the upper shell sleeve (112) and the lower shell sleeve (122); The fastener (130) passes through the cover plate (111), the upper shell (112), the lower shell (122) in sequence and is detachably connected to the base plate (121).

13. The circuit breaker according to claim 12, characterized in that, At least one of the upper shell (112) and the lower shell (122) is further provided with a second insertion hole (1102), which is used for a connector to be connected to the acquisition circuit board (220) to pass through; And / or, the upper housing (112) is also provided with a third socket (1103) through which a connector for connection with the trigger mechanism (300) passes.

14. A battery system, characterized in that, Includes a main circuit and a circuit breaker as described in any one of claims 1 to 13 connected to the main circuit.

15. The battery system according to claim 14, characterized in that, It also includes a battery cell (400), a battery management module (500) and a connector (600), wherein the conductive acquisition component (200) and the triggering mechanism (300) on the circuit breaker are electrically connected to the battery management module (500) respectively; The positive terminal of the battery cell (400) is electrically connected to the positive terminal of the connector (600) in sequence through the conductive acquisition component (200) on the circuit breaker, the first contactor, and the connector. The negative terminal of the battery cell (400) is electrically connected to the negative terminal of the connector (600) via a second contactor, the connector (600) being used for electrical connection with the power-consuming unit.

16. The battery system according to claim 15, characterized in that, The conductive acquisition component (200) on the circuit breaker is connected to the first contactor at one end, and is also connected to the positive terminal of the connector (600) in sequence through a pre-charge resistor (700) and a third contactor. And / or, the negative terminal of the battery cell (400) is also electrically connected to the second contactor via a fuse (800).

17. An electrical appliance, characterized in that, The device includes a main body, which has an electrical unit, and the main circuit of the electrical unit is equipped with a circuit breaker as described in any one of claims 1 to 13. Alternatively, the power unit may be powered by a battery system as described in any one of claims 14 to 16.

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