Circuit-breaking apparatus, control system, control method, and vehicle

Abstract

A circuit-breaking apparatus, a control system, a control method, and a vehicle. The circuit-breaking apparatus is configured to connect or disconnect a circuit of the control system.

Description

Circuit breaker, control system, control method, and vehicle

[0001] This application claims priority to Chinese patent application No. 202411555526.6, filed on October 31, 2024, and Chinese patent application No. 202411555497.3, filed on October 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle technology, and more particularly to a circuit breaker device, a control system, a control method, and a vehicle. Background Technology

[0003] With the development of new energy vehicle technology, the maximum speed limit of motors is getting higher and higher, and correspondingly, the requirements for vehicle safety are also constantly increasing. Summary of the Invention

[0004] This disclosure provides a circuit breaker, a control system, a control method, and a vehicle.

[0005] In a first aspect, a circuit breaker is provided. The circuit breaker is configured to connect or disconnect the circuitry of a control system.

[0006] The circuit breaker provided in some embodiments of this disclosure can control the disconnection of the vehicle's circuit while reducing vibration when there is an abnormality in the vehicle's circuit, or make the circuit breaker reusable.

[0007] In a second aspect, a control system is provided, including the circuit breaker device described in the first aspect.

[0008] Thirdly, a control method is provided for controlling the control system of the second aspect, the method comprising the following steps:

[0009] When the control system meets the circuit breaking condition, it controls the power component of the circuit breaking device to drive the electrical connection component to operate, thereby disconnecting the external circuit through the electrical connection component.

[0010] Fourthly, a vehicle is provided, including the circuit breaker device of the first aspect, or the control system of the second aspect.

[0011] In the technical solution disclosed herein, the circuit breaker can solve the problem that when the circuit controlling the vehicle is disconnected due to an abnormality in the circuit, the overall force of the disconnecting component is balanced, resulting in less vibration. This helps to reduce the impact on other electronic components in the circuit breaker, or it can enable the electrical connection unit to reconnect the external circuit after disconnecting it, thereby solving the technical problem that the circuit breaker cannot be used again after disconnecting the circuit. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of some embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 is a structural diagram of a vehicle according to some embodiments;

[0014] Figure 2 is a structural diagram of a circuit breaker according to some embodiments;

[0015] Figure 3 is a structural diagram of a segmentation component according to some embodiments;

[0016] Figure 4 is a structural diagram of a three-phase copper busbar according to some embodiments;

[0017] Figure 5 is a structural diagram of a circuit breaker in the open state according to some embodiments;

[0018] Figure 6 is an overall structural diagram of a circuit breaker according to some embodiments;

[0019] Figure 7A is a structural diagram of a control component according to some embodiments;

[0020] Figure 7B is a structural diagram of another control component according to some embodiments;

[0021] Figure 7C is a structural diagram of another control component according to some embodiments;

[0022] Figure 8A is a block diagram of a vehicle according to some embodiments;

[0023] Figure 8B is a block diagram of another vehicle according to some embodiments;

[0024] Figure 8C is a block diagram of yet another vehicle according to some embodiments;

[0025] Figure 9 is a structural diagram of a circuit breaker according to some embodiments;

[0026] Figure 10 is an exploded view of the circuit breaker device in Figure 9;

[0027] Figure 11 is a structural diagram of the circuit breaker body in Figure 9;

[0028] Figure 12 is a structural diagram of the shielding component and electronic assembly in Figure 9;

[0029] Figure 13 is a simplified circuit diagram of a control system according to some embodiments;

[0030] Figure 14 is a simplified logic diagram of a control method according to some embodiments;

[0031] Figure 15 is a block diagram of another vehicle according to some embodiments.

[0032] Reference numerals: 1000, vehicle; 100, drive wheel; 200, control system; 300, circuit breaker; 301, breaking assembly; 31, housing; 310, sliding cavity; 311, expansion chamber; 312, limiting part; 3120, limiting hole; 32, breaking component; 321, sliding section; 322, impact section; 323, contact part; 33, explosive structure; 331, gunpowder; 332, trigger terminal; 333, electric ignition mechanism; 34, seal; 35, power unit; 302, three-phase copper busbar; 3020, connecting conductor; 3021, first conductive section; 3022, weak section; 3023, second conductive section; 3024, pre-breaking part; 3025, rotating part; 3026, default part; 3027, insulating protective component; 3028, gap; 303. Arc extinguishing grid; 304. Arc extinguishing cover; 305. Detection device; 3051. Temperature sensor; 3052. Current sensor; 306. Control component; 3061. Circuit board; 3062. Control chip. 200. Control System; 300. Circuit Breaker; 1. Circuit Breaker Body; 11. Electrical Connection Assembly; 111. External Connection Bar; 112. Internal Connection Bar; 12. Power Assembly; 121. Stationary Iron Core; 122. Elastic Component; 123. Moving Iron Core; 124. Spindle; 125. Coil Group; 126. Arc Extinguishing Component; 127. Fixing Component; 128. Support Plate; 129. Guide Plate; 2. Electronic Assembly; 21. Circuit Board; 22. Temperature Sensor; 23. Hall Sensor; 24. Voltage Acquisition Unit; 25. Controller; 26. Ground Wire; 27. Connector; 3. Shielding Component; 4. Housing; 41. Upper Housing; 42. Lower Housing; 51. Power Port; 52. Signal Detection Port; 800. Battery Pack; 900. Capacitor; 400. Motor; 500. Control Board; 600. Three-Phase Inverter Assembly. Detailed Implementation

[0033] The technical solutions of some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0034] In related technologies, when a short circuit occurs in the circuit of an electronic device inside a vehicle, a circuit breaker is needed to promptly disconnect the circuit to prevent the electronic device from being burned out. Traditional circuit breakers typically drive a push rod to move in one direction and break the conductor to disconnect the circuit.

[0035] However, traditional circuit breakers output unidirectional impact force during the circuit breaking process, which can easily cause the circuit breaker to vibrate significantly, which is detrimental to the safe and stable operation of electronic components in the relevant circuits.

[0036] To address the aforementioned issues, this disclosure provides a vehicle 1000 in some embodiments. The vehicle 1000 can be a new energy vehicle, a hybrid vehicle, or a gasoline vehicle. The following description uses a new energy vehicle as an example.

[0037] Figure 1 is a vehicle structure diagram according to some embodiments. Referring to Figure 1, in some embodiments of this disclosure, the vehicle 1000 may include a drive wheel 100 and a control system 200 (e.g., a motor control system). The control system 200 is connected to the drive wheel 100 in a transmission manner, so that the drive wheel 100 rotates, thereby driving the vehicle 1000 to travel on the road.

[0038] In some embodiments of this disclosure, the control system 200 may include a circuit breaker 300 (as shown in FIG. 2), an inverter, and a motor. A first terminal of the circuit breaker 300 is electrically connected to the inverter, and a second terminal of the circuit breaker 300 is electrically connected to the motor. The inverter is adapted to convert direct current supplied by the battery pack into alternating current, and the circuit breaker 300 is adapted to control whether to supply the alternating current to the motor.

[0039] It should be noted that the inverter can be integrated with the control system 200, or it can be a separate component.

[0040] Figure 2 is a structural diagram of a circuit breaker according to some embodiments. Referring to Figure 2, in some embodiments of this disclosure, the circuit breaker 300 may include a disconnecting component 301 and conductors. In this application scenario, the conductors may be three-phase copper busbars 302 to ensure normal current conduction under high-voltage conditions. Here, the three-phase copper busbar 302 may include three spaced-apart connecting conductors 3020. The disconnecting component 301 is capable of disconnecting at least two of the three connecting conductors 3020 in the three-phase copper busbar 302.

[0041] It should be noted that the motor generates back electromotive force at high speeds. If the inverter malfunctions at this time, the resistance in the circuit will increase. Under the effect of current heating, the inverter temperature will gradually rise until the inverter burns out. If only one connecting conductor 3020 of the three-phase copper busbar 302 is broken, a circuit can still be formed in the control system 200, which will also cause the inverter temperature to rise.

[0042] It is understood that the circuit breaker 300 in some embodiments of this disclosure can simultaneously disconnect two connecting conductors 3020 in the three-phase copper busbar 302, thereby blocking the circuit in the control system 200 and preventing the inverter temperature from continuing to rise, thus ensuring the safety of the vehicle 1000.

[0043] It should also be noted that in low-voltage applications, the conductor can also be a two-phase conductor.

[0044] In some embodiments, the control system 200 may further include a controller and a current sensor 3052. The controller is adapted to detect whether the inverter has malfunctioned, and the current sensor 3052 is adapted to detect the current value of the three-phase copper busbar 302. When the inverter malfunctions and the current value is greater than a preset current value, the disconnecting assembly 301 disconnects at least two connecting conductors 3020 of the three-phase copper busbar 302.

[0045] It is understood that in some embodiments of this disclosure, when both the inverter and the three-phase copper busbar 302 current values ​​are abnormal, the circuit breaker 300 can disconnect the circuit of the control system 200 to protect other electronic components in the circuit. If only one of the inverter or the three-phase copper busbar 302 current values ​​is abnormal, the inverter can be restored to normal through certain adjustment methods. This ensures the safe operation of the control system 200 and reduces the cost of updating and maintaining the control system 200.

[0046] Similarly, some embodiments of this disclosure may also use the motor speed, the temperature of the three-phase copper busbar 302, the bus voltage in the battery pack, and the line voltage of the motor windings as references for whether to activate the disconnection assembly 301.

[0047] In some embodiments, the control system 200 may further include a speed sensor adapted to detect the motor speed. When the inverter malfunctions and the speed value is greater than a preset speed value, the disconnecting assembly 301 disconnects at least two connecting conductors 3020 in the three-phase copper busbar 302.

[0048] In some embodiments, the control system 200 may further include a temperature sensor 3051, which is adapted to detect the temperature value of the three-phase copper busbar 302. When the inverter malfunctions and the temperature value is greater than a preset temperature value, the disconnecting assembly 301 disconnects at least two connecting conductors 3020 in the three-phase copper busbar 302.

[0049] In some embodiments, the control system 200 may further include a voltage sensor adapted to detect the voltage value of the inner winding of the motor. When the inverter malfunctions and the voltage value is greater than a preset voltage value, the disconnecting assembly 301 disconnects at least two connecting conductors 3020 of the three-phase copper busbar 302.

[0050] The control system 200 and its protection strategy in some embodiments of this disclosure have been described above. The structure of the circuit breaker 300 in the control system 200 will be described below.

[0051] The circuit breaker 300 in some embodiments of this disclosure may include four parts: a breaking assembly 301, a conductor, a detection device 305, and a control assembly 306. For ease of explanation, the conductor is described using a three-phase copper busbar 302 as an example. The detection device 305 is adapted to acquire parameters such as the current value and temperature value of the three-phase copper busbar 302. The control assembly 306 controls whether the breaking assembly 301 disconnects the connecting conductor 3020 in the three-phase copper busbar 302 according to the above parameters. The structure of each part is described in detail below.

[0052] Figure 3 is a structural diagram of a breaking assembly according to some embodiments. Referring to Figures 2 and 3, some embodiments of this disclosure provide a breaking assembly 301, which may include a housing 31 and two breaking members (e.g., breaking rods) 32. The housing 31 has a sliding cavity 310, and the two breaking members 32 are slidably accommodated in the sliding cavity 310. A power device 35 is provided in the portion of the sliding cavity 310 located between the two breaking members 32. The power device 35 is configured to push the two breaking members 32 to move away from each other, such that each of the two breaking members 32 disconnects the corresponding connecting conductor 3020.

[0053] Understandably, on the one hand, the power unit 35 simultaneously drives the two breaking rods to move away from each other within the sliding cavity 310, and the driving forces applied to the two breaking rods are equal in magnitude; on the other hand, the reaction force applied by one of the breaking rods to the housing 31 is equal in magnitude and opposite in direction to the reaction force applied by the other breaking rod to the housing 31, and the two reaction forces can cancel each other out. In this way, the breaking assembly 301 is subjected to balanced forces, resulting in less vibration, which helps to reduce the impact on other electronic components in the circuit breaker 300.

[0054] Referring again to Figure 2, in some embodiments, two disconnectors 32 are located between two connecting conductors 3020, and each disconnector 32 is disposed opposite to its adjacent connecting conductor 3020. In some embodiments, the disconnector 32 located on the left side of the housing 31 (left side as shown in Figure 2) is disposed opposite to the connecting conductor 3020 located on the left side of the housing 31, and the disconnector 32 located on the right side of the housing 31 (right side as shown in Figure 2) is disposed opposite to the connecting conductor 3020 located on the right side of the housing 31. In this way, the disconnector 32 can be made to abut against its corresponding connecting conductor 3020, thereby stably disconnecting the connecting conductor 3020.

[0055] In some embodiments, as shown in FIG3, the portion of the sliding cavity 310 located between the two breakers 32 forms an expansion chamber 311. A gas generating device is provided within the expansion chamber 311, capable of generating gas to push the two breakers 32 away from each other, so that each breaker 32 disconnects its corresponding connecting conductor 3020. Continuing to refer to FIG3, in some embodiments, the gas generating device may include an explosion structure 33. The explosion structure 33 generates a large amount of gaseous products and heat of reaction at the moment of explosion. Under the action of the heat of reaction, the gaseous products further expand, thereby causing the expansion chamber 311 to expand.

[0056] Understandably, because the gunpowder 331 is confined by the expansion chamber 311, the chemical energy of the gunpowder 331, after being converted into kinetic energy, can be concentrated on the two breaking rods, giving the breaking rods greater kinetic energy, which is beneficial for the targeted detonation of the three-phase copper busbar 302. Furthermore, the symmetrical structural layout in some embodiments of this disclosure can fully utilize the energy of the gunpowder 331, reducing the amount of gunpowder 331 used, thereby further reducing the vibration of the circuit breaker 300. It should be noted that the aforementioned explosion structure 33 may include the gunpowder 331, a trigger terminal 332, and an electric ignition mechanism 333. The control component 306 can control the electric ignition mechanism 333 to start via the trigger terminal 332, causing the electric ignition mechanism 333 to generate an electric spark, thereby igniting the gunpowder 331 for explosion. In other embodiments, expansion can also be achieved by injecting high-pressure oil or high-pressure gas into the expansion chamber 311, and the control component 306 can control the injection or discharge of the oil or gas via the trigger terminal 332.

[0057] Referring again to FIG3, in some embodiments, a limiting portion 312 is provided at the end of the sliding cavity 310 away from the expansion chamber 311. The breaking member 32 includes an abutting portion 323, which is capable of abutting against the limiting portion 312 so that at least a portion of the breaking member 32 is located within the sliding cavity 310.

[0058] In this way, the housing 31 can prevent the disconnecting element 32 from completely disengaging from the sliding cavity 310, thus avoiding the disconnecting element 32 from continuing to impact after disconnecting the three-phase copper busbar 302 and causing damage to other electronic components in the circuit breaker 300.

[0059] Referring again to FIG3, in some embodiments, each of the two breakers 32 may include a sliding segment 321 and an impact segment 322. The sliding segment 321 is slidably accommodated in the sliding cavity 310, with its outer peripheral surface abutting against the inner peripheral surface of the sliding cavity 310, and is movable along the axial direction of the sliding cavity 310. The impact segment 322 is connected to the side of the sliding segment 321 away from the expansion chamber 311. In some embodiments, the diameter of the sliding segment 321 is larger than the diameter of the impact segment 322, and the sliding segment 321 and the impact segment 322 form an abutment portion 323 at the connection position. The abutment portion 323 is disposed on the impact segment 322 or on the sliding segment 321.

[0060] In this way, the impact section 322 and the sliding section 321 of different diameters in the split member 32 can be used to form a stepped abutment 323. When the abutment 323 abuts against the limiting part 312 on the housing 31, the impact section 322 is located outside the sliding cavity 310 and disconnects the connecting conductor 3020, while the sliding section 321 is restricted inside the sliding cavity 310.

[0061] Referring again to Figure 3, in some embodiments, the minimum inner diameter of the limiting portion 312 is greater than the maximum outer diameter of the impact section 322, and less than the maximum outer diameter of the sliding section 321.

[0062] In this way, it can ensure that the impact section 322 breaks the connection conductor 3020 by passing through the limiting part 312, and the sliding section 321 is stably limited in the sliding cavity 310 by the limiting part 312, so that the stroke of the impact section 322 is kept within a reasonable range.

[0063] In some embodiments, the limiting portion 312 contracts toward the central axis of the sliding cavity 310 in a direction away from the sliding section 321 to form a limiting hole 3120. Here, the inner diameter of the limiting hole 3120 is larger than the outer diameter of the impact section 322 and smaller than the outer diameter of the sliding section 321.

[0064] In some embodiments, the limiting part 312 may also be a limiting block of other structures, such as a wedge or a rectangle, as long as it can cooperate with the abutting part 323 on the breaking member 32 to prevent the breaking member 32 from coming out of the sliding cavity 310.

[0065] Referring again to FIG3, in some embodiments, the splitting assembly 301 may further include a seal 34 disposed between the sliding section 321 and the inner wall of the housing 31, so that the expansion chamber 311 and the sliding cavity 310 are not in communication with each other.

[0066] In this way, the high-pressure gas generated during the explosion can be prevented from escaping to the outside of the breaking assembly 301 through the gap between the sliding section 321 and the inner wall of the housing 31 by the seal 34, so that the kinetic energy of the gunpowder 331 can be fully applied to the breaking rod, thereby ensuring that the breaking rod has a large kinetic energy.

[0067] In some embodiments, the outer periphery of the sliding segment 321 is provided with an annular groove, and the seal 34 may include a sealing ring connected to the annular groove. In this way, the sealing ring and the sliding segment 321 can be stably connected, avoiding the sealing ring from separating from the sliding segment 321 during sliding, which would lead to sealing failure.

[0068] The above describes in detail the circuit breaking component 301 in some embodiments of this disclosure. The following describes in detail the structure of the three-phase copper busbar 302 in the circuit breaking component.

[0069] Figure 4 is a structural diagram of a three-phase copper busbar according to some embodiments. Referring to Figures 3 and 4, in some embodiments, the three-phase copper busbar 302 includes three connecting conductors 3020 spaced apart. Two disconnecting members 32 can disconnect two of the three connecting conductors 3020 of the three-phase copper busbar 302 respectively, thereby blocking the circuit in the control system 200, preventing the inverter temperature from continuing to rise, and thus ensuring the safety of the vehicle 1000.

[0070] Referring again to Figures 3 and 4, in some embodiments, each of the three connecting conductors 3020 may include a first conductive segment 3021 and a weak segment 3022. A first end of the first conductive segment 3021 is adapted to electrically connect to a first electrical component, such as a motor. A first end of the weak segment 3022 is connected to a second end of the first conductive segment 3021, and the cross-sectional area of ​​the weak segment 3022 and the first conductive segment 3021 at the contact point is smaller than the cross-sectional area of ​​the first conductive segment 3021, so that a pre-break portion 3024 is formed at the contact point. In some embodiments, the breaking member 32 can press against the pre-break portion 3024 to disconnect the first conductive segment 3021 from the weak segment 3022.

[0071] It is understandable that, since the cross-sectional area of ​​the weak segment 3022 and the first conductive segment 3021 at the contact position is smaller than that of the first conductive segment 3021, and a pre-break portion 3024 is formed at the contact position, the impact segment 322 of the breaking member 32 is more likely to break the connecting conductor 3020 when it impacts the pre-break portion 3024 compared to other positions of the connecting conductor 3020, thus avoiding incomplete breakage and ensuring the circuit breaking effect of the circuit breaking device 300.

[0072] In some embodiments, referring to FIG4, a gap 3028 is formed between the weak segment 3022 and the first conductive segment 3021, and the gap 3028 is disposed adjacent to the pre-break portion 3024. Thus, by providing the gap 3028, the connection length between the weak segment 3022 and the first conductive segment 3021 is reduced, the connection strength between the weak segment 3022 and the first conductive segment 3021 is decreased, making it easier for the breaking member 32 to disconnect the weak segment 3022.

[0073] The location of the vacancy 3028 can be varied. In some embodiments, two vacancy 3028 are formed between the weak segment 3022 and the first conductive segment 3021, and the two vacancy 3028 are located at both ends of the pre-break portion 3024.

[0074] In some embodiments, the circuit breaker 300 may further include an insulating protective element 3027, which is sleeved on the pre-break portion 3024.

[0075] It is understandable that, since conductive structures such as connecting bolts are unavoidably used on the housing 31, and the circuit breaker 300 in some embodiments of this disclosure is located in a high-voltage environment, an electric arc may occur between the first conductive segment 3021 and the housing 31 after the disconnecting member 32 disconnects the connecting conductor 3020. In some embodiments of this disclosure, an insulating protective member 3027 is provided on the pre-break portion 3024, so that after the first conductive segment 3021 is disconnected from the weak segment 3022, the break point of the first conductive segment 3021 is in an insulated state, thereby preventing the occurrence of an electric arc and ensuring the safety of the circuit breaker 300.

[0076] Referring again to Figure 4, in some embodiments, the connecting conductor 3020 may further include a second conductive segment 3023. A first end of the second conductive segment 3023 is connected to a second end of the weak segment 3022, and a rotating portion 3025 is formed at the contact position with the first conductive segment 3021. The second end of the second conductive segment 3023 is adapted to electrically connect to a second electrical component, such as an inverter. Here, the rotation axis of the rotating portion 3025 is perpendicular to the sliding direction of the breaking member 32. The cross-sectional area of ​​the rotating portion 3025 is larger than the cross-sectional area of ​​the pre-breaking portion 3024.

[0077] In this way, the weak section 3022 can bear the impact force of the breaking member 32 on the front, causing the weak section 3022 to break away from the first conductive section 3021, and it is also convenient to control the movement trajectory of the weak section 3022 after it breaks away.

[0078] In some embodiments, referring to FIG4, a default portion 3026 is formed between the weak segment 3022 and the second conductive segment 3023, and the default portion 3026 is disposed adjacent to the rotating portion 3025.

[0079] Thus, by setting the gap 3028, the connection length between the weak segment 3022 and the second conductive segment 3023 is reduced, and the rotational resistance between the weak segment 3022 and the second conductive segment 3023 is reduced, making it easier for the break member 32 to push the weak segment 3022 to rotate around the rotating part 3025.

[0080] The position of the default portion 3026 can be varied. In some embodiments, two default portions 3026 are formed between the weak segment 3022 and the second conductive segment 3023, and the two default portions 3026 are located at both ends of the rotating portion 3025, respectively.

[0081] Figure 5 is a structural diagram of the circuit breaker in the open state according to some embodiments. Referring to Figures 4 and 5, in some embodiments, the circuit breaker 300 may further include an arc-extinguishing grid 303. The arc-extinguishing grid 303 is located on the side of the weak section 3022 away from the breaking member 32, and the breaking member 32 drives the weak section 3022 to rotate about the rotation axis so that the end of the weak section 3022 away from the rotating part 3025 is connected to the arc-extinguishing grid 303.

[0082] Thus, after the weak section 3022 is disconnected, it can rotate toward the arc-extinguishing grid 303 until the two come into contact, pulling the arc into the arc-extinguishing grid 303. The arc is divided into multiple short arcs by the arc-extinguishing grid plates in the arc-extinguishing grid 303, making the arc-starting voltage higher than the power supply voltage and generating a cathode effect. The arc-extinguishing grid plates absorb the heat of the arc and promote the extinction of the arc, thereby ensuring the safety of the circuit breaker 300.

[0083] Figure 6 is an overall structural diagram of a circuit breaker according to some embodiments. Referring to Figure 6, in some embodiments, the circuit breaker 300 may further include an arc-extinguishing chamber 304, with at least a portion of the connecting conductor 3020 and the arc-extinguishing grid 303 located within the arc-extinguishing chamber 304, and an insulating gas is provided inside the arc-extinguishing chamber 304. Thus, on the one hand, the insulating gas can further enhance the arc-extinguishing effect; on the other hand, the arc-extinguishing chamber 304 can confine the arc-extinguishing process within the arc-extinguishing chamber 304, preventing arc leakage, thereby further improving the safety of the circuit breaker 300.

[0084] It should be noted that the insulating gas can be contained in a gas storage tank. When a circuit breaker is needed, the gas storage tank opens, releasing the internal insulating gas to work in conjunction with the arc-extinguishing grid 303 to extinguish the arc. This reduces the sealing requirements of the arc-extinguishing cover 304 while improving the arc-extinguishing effect.

[0085] In addition, the insulating gas released from the gas storage tank can insulate each copper busbar, ensuring the safe operation of the circuit breaker 300.

[0086] It should also be noted that some embodiments of this disclosure may use an arc-extinguishing grid 303 for arc extinguishing, or an insulating gas for arc extinguishing, or may use both an arc-extinguishing grid 303 and an insulating gas for arc extinguishing.

[0087] In some embodiments, as shown in FIG6, the detection device 305 in some embodiments of this disclosure may include electronic devices such as a temperature sensor 3051 and a current sensor 3052, which are suitable for detecting relevant parameters of the three-phase copper busbar 302.

[0088] Referring again to Figure 2, in some embodiments, the current sensor 3052 is disposed inside the arc-extinguishing chamber 304 and located at the pre-break section 3024. This ensures both the detection accuracy of the sampled current and improves the integration of the circuit breaker 300, allowing the entire process from abnormal sampling to active disconnection to be completed within the circuit breaker 300.

[0089] Referring again to Figure 6, in some embodiments, at least a portion of the connecting conductor 3020 is located outside the arc-extinguishing chamber 304, and the current sensor 3052 is detachably connected to the outside of the arc-extinguishing chamber 304 and is located near the portion of the connecting conductor 3020 located outside the arc-extinguishing chamber 304. This allows for flexible installation and removal based on actual conditions, enabling the selection of a suitable integration method.

[0090] Referring again to Figure 6, in some embodiments, the temperature sensor 3051 is located inside the arc extinguishing chamber 304. The temperature sensor 3051 can be an infrared temperature sensor 3051 or a thermistor temperature sensor 3051, which reduces the cost.

[0091] Figures 7A to 7C are structural diagrams of a control component according to some embodiments. Referring to Figure 3 and Figures 7A to 7C, Figure 7A is a front view of the control component, Figure 7B is a top view of the control component, and Figure 7C is a rear view of the control component. As shown in Figures 7A to 7C, the control component 306 in some embodiments of this disclosure may include a circuit board 3061 and a control chip 3062 disposed on the circuit board 3061. The current sensor 3052 and the temperature sensor 3051 are electrically connected to the circuit board 3061, and the control chip 3062 is electrically connected to the trigger terminal 332 in the disconnection component 301.

[0092] Thus, the current sensor 3052 and the temperature sensor 3051 can convert the collected relevant parameters into corresponding electrical signals, and transmit the electrical signals to the control chip 3062 through the circuit board 3061. The control chip 3062 analyzes and judges the electrical signals. If the circuit breaking conditions are met, the control chip 3062 sends a start command to the disconnecting component 301 through the trigger terminal 332, causing the disconnecting component 301 to disconnect the three-phase copper busbar 302.

[0093] Referring again to Figures 6 and 7A through 7C, in some embodiments, the control chip 3062 is located on one side of the circuit board 3061, while the sensing elements such as the temperature sensor 3051, current sensor 3052, and voltage sensor are located on the other side of the circuit board 3061. This facilitates proper wiring within the control assembly 306.

[0094] In some embodiments, when the control component 306 is disposed inside the arc extinguishing shroud 304, and the temperature sensor 3051, current sensor 3052, and control chip 3062 are all integrated into the circuit board 3061 inside the control component 306, some embodiments of this disclosure integrate the control chip 3062 inside the circuit breaker 300, which can realize a variety of control methods and has good replaceability.

[0095] In some embodiments, as shown in Figures 8A to 8C, the vehicle 1000 includes a disconnection assembly 301, a circuit breaker 300, or a control system 200.

[0096] It is understandable that circuit breakers are common electrical components. When an abnormality occurs in a circuit, the faulty circuit is disconnected by opening the circuit breaker, thus protecting the circuit. In related technologies, circuit breakers are disposable and cannot be reused after being opened.

[0097] In related technologies, in the application of new energy vehicles, the circuit breaker quickly cuts off the conductive plate by detonating fuel, disconnecting the three-phase current. After disconnection, the trigger cannot be restored and cannot be reused.

[0098] To address the aforementioned issues, this disclosure provides some embodiments of a circuit breaker 300 (such as a circuit breaker). Figures 9 to 12 are structural diagrams of some embodiments of the circuit breaker 300 provided in this disclosure. The circuit breaker 300 provided in some embodiments of this disclosure has high integration, accurate signal judgment, and higher security. The circuit breaker 300 will be described below in conjunction with the main accompanying drawings.

[0099] Please refer to Figures 9 and 10. The circuit breaker 300 includes an electrical connection component 11 and a power component 12. The electrical connection component 11 is adapted to be connected to an external circuit. The power component 12 is used to drive the electrical connection component 11 to operate, so that the external circuit is connected or disconnected through the electrical connection component 11.

[0100] In some embodiments, the circuit breaker 300 includes an electrical connection component 11 and a power component 12. The electrical connection component 11 is adapted to be connected to an external circuit, and the power component 12 is used to drive the electrical connection component 11 to operate, so that the external circuit is connected or disconnected through the electrical connection component 11. The electrical connection component 11 can reconnect the external circuit after disconnecting it, thereby solving the technical problem that the circuit breaker 300 cannot be used again after disconnecting the circuit.

[0101] In some embodiments, the circuit breaker 300 includes a circuit breaker body 1 and an electronic component 2; the circuit breaker body 1 includes an electrical connection component 11 and a power component 12; the electronic component 2 is integrated into the circuit breaker body 1 and is used to generate electronic signals, which are used to determine whether the power component 12 drives the electrical connection component 11 to operate, so that the external circuit is connected or disconnected through the electrical connection component 11.

[0102] The circuit breaker body 1 is used to connect to an external circuit. When the external circuit fails, the circuit breaker body 1 can disconnect, thereby cutting off the external circuit and avoiding problems such as thermal runaway, thus improving safety. The electronic component 2 is used to generate electronic signals, which are used to determine whether the circuit breaker body 1 has disconnected, thereby avoiding false judgments that would cause the circuit breaker body 1 to disconnect. Furthermore, the electronic component 2 is integrated into the circuit breaker body 1, which can effectively reduce the size of the electronic component 2 and improve space utilization.

[0103] In some embodiments, referring further to Figures 9 and 10, the circuit breaker 300 also includes a housing 4, within which the circuit breaker body 1 and the electronic components 2 are integrated. This disclosure does not limit the integration method of the circuit breaker body 1 and the electronic components 2; any method can be selected according to the actual situation.

[0104] In some embodiments of this disclosure, the circuit breaker 300 is typically disposed in an external circuit and electrically connected to the external circuit via the circuit breaker body 1. The electronic signals include internal signals and external signals. The internal signals are associated with the circuit breaker body 1, and the external signals are associated with the external circuit electrically connected to the circuit breaker body 1. The electronic component 2 is electrically connected to the circuit breaker body 1 and is also electrically connected to the external circuit. The electronic component 2 is capable of receiving both external signals and internal signals simultaneously.

[0105] It should be noted that during operation, the external circuit may generate erroneous external signals. When electronic component 2 receives an erroneous external signal, it makes an incorrect judgment, causing the circuit breaker 300 to disconnect erroneously. In some embodiments of this disclosure, to avoid the above situation, electronic component 2 only controls the circuit breaker body 1 to disconnect when it receives both an external signal and an internal signal simultaneously. When electronic component 2 only receives an external signal and not an internal signal, it will not control the circuit breaker body 1 to disconnect. When a fault occurs in the external circuit, electronic component 2 receives both an external signal and an internal signal. When electronic component 2 receives both external and internal signals simultaneously, it controls the circuit breaker body 1 to disconnect. This configuration allows the circuit breaker 300 to disconnect more accurately, avoids the influence of erroneous information, and improves safety.

[0106] In some embodiments, when the electronic component 2 receives both external and internal signals simultaneously, the electronic component 2 controls the power component 12 to move, which in turn drives the electrical connection component 11 to move, thus disconnecting the electrical connection component 11 from the external circuit. When the fault is cleared, the power component 12 drives the electrical connection component 11 to move, thereby reconnecting the electrical connection component 11 to the external circuit and allowing it to continue operating. This configuration gives the circuit breaker 300 a recoverable characteristic, enabling it to be reused and saving costs.

[0107] It should be noted that this disclosure does not limit the position of the electronic component 2. In some embodiments of this disclosure, the electronic component 2 is located on the side of the power component 12 away from the electrical connection component 11. This arrangement ensures that the electronic component 2 does not interfere with the movement of the electrical connection component 11, thereby improving space utilization.

[0108] Referring to Figures 10 and 11, in some embodiments of this disclosure, the electrical connection assembly 11 includes an internal connection bar 112 and two external connection bars 111. The two external connection bars 111 are spaced apart and used for connection to external circuits. The two external connection bars 111 do not contact each other. The internal connection bar 112 is disposed between the two external connection bars 111 and is used to electrically connect the two external connection bars 111. The power assembly 12 is used to electrically connect the internal connection bar 112 to the two external connection bars 111, or to disconnect the internal connection bar 112 from the two external connection bars 111. It should be noted that the power assembly 12 can be connected to either the internal connection bar 112 or the external connection bars 111. This disclosure does not limit this; the choice can be made according to the actual situation.

[0109] In some embodiments, the two external connection bars 111 are mainly connected to an external circuit, on which multiple components are disposed. If the power component 12 is connected to the external connection bar 111 and drives the external connection bar 111 to disconnect from the internal connection bar 112, the movement of the external connection bar 111 may affect other components of the external circuit. To avoid the above situation, in some embodiments of this disclosure, please continue to refer to Figures 10 and 11, the power component 12 is connected to the internal connection bar 112; the power component 12 drives the internal connection bar 112 to move closer to the two external connection bars 111, so that the internal connection bar 112 is electrically connected to the two external connection bars 111, or the power component 12 drives the internal connection bar 112 away from the two external connection bars 111, so as to disconnect the electrical connection between the internal connection bar 112 and the two external connection bars 111.

[0110] In some embodiments, when the electronic component 2 receives both external and internal signals simultaneously, the electronic component 2 controls the power component 12 to move. The power component 12 drives the internal connection bar 112 to move, causing the internal connection bar 112 to separate from the two external connection bars 111, thereby disconnecting the external circuit. When the fault is cleared, the power component 12 drives the internal connection bar 112 to move closer to the two external connection bars 111, causing the internal connection bar 112 to contact the two external connection bars 111, thereby connecting the external circuit.

[0111] It should be noted that this disclosure does not limit the type of internal connection bus 112 and external connection bus 111, as long as they can connect to external circuits. In some embodiments of this disclosure, both internal connection bus 112 and external connection bus 111 are copper busbars.

[0112] In some embodiments, in order to improve the disconnection rate of the internal connection bar 112 and the external connection bar 111, the electrical connection assembly 11 further includes an explosive assembly for detonating to assist in the separation of the internal connection bar 112 and the external connection bar 111.

[0113] In some embodiments, the explosive assembly includes two explosive elements, each of which is located at the connection between the internal connection row 112 and the external connection row 111. When the internal connection row 112 and the external connection row 111 separate, the explosive element will explode, and the explosion will generate an impact force, causing the internal connection row 112 and the external connection row 111 to separate rapidly, thereby reducing the reaction speed and increasing the disconnection rate of the internal connection row 112 and the external connection row 111.

[0114] In some embodiments, the external connection row 111 is provided with a receiving groove on the side facing the internal connection row 112, and the explosive is placed in the receiving groove. After the explosive explodes, a new explosive can be placed in the receiving groove, so that the circuit breaker 300 can be reused and the cost is reduced.

[0115] It should be noted that this disclosure does not limit the type of power assembly 12; it can be selected according to the actual situation.

[0116] In some embodiments of this disclosure, two external connecting rows 111 are spaced apart, and the length of the internal connecting row 112 is greater than the width of the gap between the two external connecting rows 111. This arrangement allows the internal connecting portion to connect better with the two external connecting rows 111.

[0117] In some embodiments, please continue to refer to Figures 10 and 11. The power assembly 12 includes a stationary iron core 121 and an elastic element 122. The stationary iron core 121 is fixedly installed inside the housing 4. The first end of the elastic element 122 is connected to the stationary iron core 121, and the second end is connected to the internal connection row 112.

[0118] Referring to Figures 10 and 11, in some embodiments, the power assembly 12 further includes at least one moving iron core 123; the at least one moving iron core 123 is connected to the elastic element 122 and is used to drive the elastic element 122 to move. When the inner connecting row 112 and the outer connecting row 111 are separated, the moving iron core 123 moves towards the stationary iron core 121 to compress the elastic element 122, thereby driving the inner connecting row 112 to move, so that the inner connecting row 112 is separated from the outer connecting row 111.

[0119] In some embodiments, the power assembly 12 further includes a guide member connected to one side of the stationary iron core 121, and the moving iron core 123 is slidably mounted on the guide member, which is used to guide the moving iron core 123.

[0120] In some embodiments of this disclosure, the guide includes two guide plates 129. The two guide plates 129 are provided on both sides of the stationary iron core 121. The two guide plates 129 and the stationary iron core 121 form a receiving cavity. The elastic element 122 and the moving iron core 123 are disposed in the receiving cavity. The first end of the moving iron core 123 is slidably connected to the guide plate 129, and the second end of the moving iron core 123 is connected to the elastic element 122. When the moving iron core 123 slides along the guide plate 129, it compresses the elastic element 122.

[0121] It should be noted that the elastic element 122 itself can undergo elastic deformation. When the weight of the object mounted on the elastic element 122 is too heavy, or when the length of the elastic element 122 itself is too long, the elastic element 122 may undergo elastic bending. Therefore, the support effect of the elastic element 122 is poor. If the elastic element 122 is used to support the internal connecting row 112, the internal connecting row 112 may separate from the external connecting row 111 due to insufficient support force of the elastic element 122. Therefore, in some embodiments of this disclosure, please continue to refer to FIG11, the power assembly 12 also includes a spindle 124. One end of the spindle 124 is located at the first end of the elastic element 122 away from the stationary iron core 121, and the second end of the spindle 124 is connected to the internal connecting row 112. The spindle 124 is located between the elastic element 122 and the internal connecting row 112. By supporting the elastic element 122 with the spindle 124, the separation of the internal connecting row 112 from the external connecting row 111 due to insufficient support force of the elastic element 122 can be avoided.

[0122] Please continue referring to Figure 11. In some embodiments of this disclosure, the elastic element 122 is a spring. Two fixing elements 127 are provided on the stationary iron core 121, and the two fixing elements 127 are arranged opposite to each other. The first end of the spring is engaged between the two fixing elements 127, and the second end abuts against the mandrel 124. At the same time, the moving iron core 123 is connected to the spring. The diameter of the mandrel 124 is slightly smaller than the diameter of the spring, so that the spring can be engaged on the mandrel 124. The moving iron core 123 is connected to the end of the spring facing the mandrel 124, thereby achieving the fixation of the mandrel 124, the spring, and the moving iron core 123.

[0123] It should be noted that in some embodiments of this disclosure, in order to ensure the uniformity of the force on the elastic element 122, at least one moving iron core 123 includes two moving iron cores 123, which are arranged opposite to each other, thereby ensuring that both ends of the elastic element 122 are subjected to force at the same time, ensuring the uniformity of the force, and extending the service life of the elastic element 122.

[0124] In some embodiments, the power assembly 12 further includes at least one coil group 125, which is disposed on the side of the guide member away from the stationary iron core 121, and corresponds to the moving iron core 123. When the coil group 125 is energized, a magnetic field is generated. Under the influence of the magnetic field, the moving iron core 123 becomes magnetic and is attracted by the stationary iron core 121. The moving iron core 123 moves towards the stationary iron core 121. Since the moving iron core 123 is connected to the elastic member 122, the elastic member 122 is compressed. The elastic member 122 drives the spindle 124 to move, and the spindle 124 drives the internal connecting strip 112 to move, thereby separating the internal connecting strip from the external connecting strip 111. When the coil group 125 is de-energized, the magnetic field disappears, the attraction between the moving iron core 123 and the stationary iron core 121 disappears, the elastic member 122 resets, and the moving iron core 123 and the stationary iron core 121 are separated. At the same time, the internal connecting strip 112 is reconnected to the external connecting strip 111.

[0125] In some embodiments, the power assembly 12 includes two coil groups 125, each coil group 125 being located on the side of its corresponding moving iron core 123 away from the spindle 124. In operation, the two coil groups 125 are energized to magnetize their corresponding moving iron cores 123, causing the moving iron core 123 to become magnetic. The moving iron core 123 is then attracted to the stationary iron core 121, and moves towards the stationary iron core 121.

[0126] It should be noted that an electric arc will be generated during the attraction and separation of the stationary iron core 121 and the moving iron core 123. The electric arc will cause other components of the external circuit structure to burn out. In order to avoid the generation of electric arc, in some embodiments of this disclosure, please continue to refer to Figures 10 and 11, the power assembly 12 also includes an arc extinguishing element 126. A support plate 128 is provided on the side of the coil group 125 facing the electrical connection assembly 11. The arc extinguishing element 126 is provided on the support plate 128 and corresponds to the spindle 124.

[0127] It should be noted that this disclosure does not limit the type of the arc-extinguishing element 126, as long as it can suppress the electric arc. In some embodiments, the arc-extinguishing element 126 includes multiple metal arc-extinguishing plates, which are stacked and placed on the support plate 128 to eliminate the electric arc within the circuit breaker body 1. In other embodiments, the arc-extinguishing element 126 may also be made of quartz sand or a fuse. The arrangement of quartz sand and fuses can refer to conventional arrangements in the art, and this disclosure will not elaborate further.

[0128] In some embodiments, the circuit breaker 300 further includes a shield 3 disposed between the circuit breaker body 1 and the electronic component 2, for isolating electromagnetic signals between the circuit breaker body 1 and the electronic component 2. The structure of the shield 3 can be referred to conventional settings in the art, and will not be described in detail here.

[0129] In some embodiments, the electronic signal includes an internal signal and an external signal, the internal signal being associated with the circuit breaker body 1 and the external signal being associated with an external circuit electrically connected to the circuit breaker body 1.

[0130] In some embodiments, referring to Figures 10 and 12, the electronic component 2 includes a temperature sensor 22, which generates a temperature signal for the circuit breaker body 1.

[0131] It should be noted that the location of the temperature sensor 22 is not limited in this disclosure, as long as it can detect the temperature of the circuit breaker body 1. In some embodiments of this disclosure, the electrical connection component 11 is used to connect or disconnect the external circuit through the electrical connection component 11; therefore, the temperature of the electrical connection component 11 has a large interference with the external circuit. The temperature sensor 22 is connected to the electrical connection component 11 to monitor the temperature of the electrical connection component 11 and generate a temperature signal of the electrical connection component 11.

[0132] In some embodiments, the internal connecting bar 112 is connected to the power assembly 12, and the external connecting bar 111 is connected to an external circuit. In some embodiments of this disclosure, a temperature sensor 22 is connected to the internal connecting bar 112 to monitor the temperature of the internal connecting bar 112 and generate a temperature signal for the internal connecting bar 112. It should be noted that by placing the temperature sensor 22 on the internal connecting bar 112, the elastic element 122 will only rebound when the temperature of the internal connecting bar 112 meets the requirements, thereby connecting the internal connecting bar 112 to the external connecting bar 111 and improving safety.

[0133] Referring to Figures 10 and 12, electronic component 2 also includes a Hall sensor 23, which generates electromagnetic signals for external circuits. For example, the Hall sensor 23 can identify the winding phase position information of the motor 400 in the external circuit, convert the winding phase information of the motor 400 into an electrical signal, and the control board 500 obtains the rotor position information of the motor 400 by reading the output level signal of the Hall sensor 23. This allows the control logic switch to complete the correct commutation according to the rotor position information of the motor 400, supplying current to the corresponding winding of the motor 400, forming an air gap rotating magnetic field that makes the motor 400 run continuously.

[0134] In some embodiments, referring further to Figures 10 and 12, electronic component 2 also includes a voltage acquisition unit 24, which generates voltage signals for external circuits. In some embodiments, the voltage acquisition unit 24 primarily acquires phase voltages via operational amplifiers, scales down the phase voltages to a range that can be sampled by an analog-to-digital converter (ADC), and then performs internal conversion to restore the acquired phase voltage magnitude, thereby monitoring changes in phase voltages in external circuits.

[0135] In some embodiments, the electronic component 2 further includes a controller 25, which is electrically connected to the temperature sensor 22, the Hall sensor 23 and the voltage acquisition unit 24. The controller 25 is used to generate a judgment signal, which is used to characterize whether the signals generated by the temperature sensor 22, the Hall sensor 23 and the voltage acquisition unit 24 are abnormal.

[0136] In some embodiments of this disclosure, the shielding layer can shield external electromagnetic signal interference, reduce external signal interference to the controller 25 during high-voltage operation, and improve the accuracy of the controller 25's operation.

[0137] In some embodiments, the electronic component 2 further includes a first circuit board 21, on which the controller 25, Hall sensor 23 and voltage acquisition device 24 are integrated. The first circuit board 21 is also provided with a ground wire 26. Meanwhile, a connector 27 is provided on one side of the first circuit board 21. The connector 27 can be used for connecting wire harnesses to be plugged in. On the one hand, it can provide power to the controller 25, Hall sensor 23 and voltage acquisition device 24. On the other hand, it can realize communication interaction between the controller 25 and the complex programmable logic device (CPLD) of the external circuit.

[0138] Please continue referring to Figures 9 and 10. In some embodiments, the housing 4 includes an upper housing 41 and a lower housing 42. The upper housing 41 is provided with a power port 51 and a signal detection port 52, while the lower housing 42 is provided with the circuit breaker body 1 and electronic components 2. During actual operation, the external processor provides a 12V signal to the circuit breaker body 1 through the power interface. The signal detection port 52 is used to monitor the operating status of the circuit breaker 300 and feeds back the current signal to the external processor for confirmation. When the 12V power is supplied, the circuit breaker 300 starts to work, and at this time, the circuit breaker body 1 is connected to the external circuit. When the power is cut off, the circuit breaker 300 stops working, and the circuit breaker body 1 is disconnected from the external circuit.

[0139] In some embodiments, referring to FIG13, the control system 200 further includes a battery pack 800, a capacitor 900, a three-phase inverter assembly 600, and a motor 400. The capacitor 900 is connected in series with the battery pack 800; the battery pack 800 provides DC power to the capacitor 900, which stores energy to stabilize the current. Simultaneously, the capacitor 900 filters the DC power to obtain smoother DC power. The three-phase inverter assembly 600 is connected to the battery pack 800 and in parallel with the capacitor 900. The three-phase inverter assembly 600 converts the DC power into AC power, which is then supplied to the motor 400 to drive the motor 400.

[0140] It should be noted that the three-phase inverter assembly 600 includes multiple three-phase inverters. The connection method of multiple three-phase inverters can be referred to the conventional settings in this field, and will not be described in detail here.

[0141] In some embodiments of this disclosure, the control system 200 includes three circuit breaker devices 300. Each of two phases of the motor 400 and the three-phase inverter assembly 600 is connected to one circuit breaker device 300. When the three-phase inverter assembly 600 fails, two circuit breaker devices 300 disconnect, preventing the AC power from forming a closed loop and avoiding back electromotive force flowing back into the three-phase inverter assembly 600. Furthermore, to prevent the battery pack 800 from being affected by the failure of the three-phase inverter assembly 600, a circuit breaker device 300 is provided at the output terminal of the battery pack 800. When the three-phase inverter assembly 600 fails, the circuit breaker device 300 can disconnect, ensuring that the vehicle can safely and smoothly stop when the three-phase inverter assembly 600 fails.

[0142] In some embodiments, the control system 200 further includes a control board 500, which is electrically connected to the three circuit breaker devices 300 and is used to control the operation of the three circuit breaker devices 300.

[0143] As shown in Figure 15, some embodiments of this disclosure also provide a vehicle 1000, which includes the control system 200 described above. The vehicle 1000 has all the beneficial effects of the control system 200 described above, which will not be repeated here.

[0144] The vehicle may be a plug-in hybrid electric vehicle or a new energy vehicle, etc., and this disclosure does not limit it.

[0145] This disclosure also provides a control method for controlling the circuit breaker 300 in some embodiments. This control method possesses all the beneficial effects of the circuit breaker 300 described above, which will not be elaborated further here.

[0146] In some embodiments, referring to Figure 14, the control method includes the following steps:

[0147] When the control system meets the circuit breaking condition, it controls the power component 12 of the circuit breaking device 300 to drive the electrical connection component 11 to operate (i.e., trigger a phase loss signal to drive the circuit breaking device to operate), so that the external circuit is disconnected through the electrical connection component 11.

[0148] In some embodiments of this disclosure, the circuit breaker 300 will disconnect only when the control system meets the circuit breaker conditions. In some embodiments, the circuit breaker conditions are obtained by electronic signals, including Intelligent Power Module (IPM) fault signals. IPM fault signals mainly include operating conditions such as short circuit, undervoltage, overcurrent, and overtemperature. The electronic signals also include three-phase inverter component 600 signals, including overcurrent, phase voltage overvoltage, and overtemperature. When the electronic signals meet the circuit breaker conditions, the control board 500 controls the circuit breaker 300 to disconnect the circuit, thereby disconnecting the external circuit.

[0149] In some embodiments, please continue to refer to Figure 14, the steps of "controlling the circuit breaker device 300 to disconnect when the electronic signal meets the circuit breaker condition" include:

[0150] When a first-level fault signal and a second-level fault signal are received in sequence, the power component 12 of the circuit breaker 300 is controlled to drive the electrical connection component 11 to operate, thereby disconnecting the external circuit through the electrical connection component 11.

[0151] In some embodiments of this disclosure, the primary fault signal includes the IPM fault signal.

[0152] First, the status information of motor 400 is obtained. Then, the control board 500 determines whether an IPM fault is reported. The IPM is an important component of the electric vehicle's power system, integrating power switching devices and their drive circuits. IPM fault signals mainly include short circuit, undervoltage, overcurrent, and overheating conditions. If the control board 500 does not report an IPM fault, the conditions for triggering the circuit breaker 300 to disconnect are not met, and the system returns to the initial conditions.

[0153] When the control board reports an IPM fault, it meets the first-level fault signal. At this time, the second-level fault signal is then evaluated.

[0154] The secondary fault signals include the current fault value of the three-phase inverter assembly 600, the voltage fault value of the three-phase inverter assembly 600, and the temperature fault value of the circuit breaker 300 (the temperature fault value is whether the temperature of the internal connection bar 112 of the three circuit breakers 300 is too high). Hall sensor 23 is used to determine if the phase current is overcurrent; voltage acquisition unit 24 compares the phase voltage and line voltage to determine if the back electromotive force is higher than the threshold; and infrared temperature sensor 22 detects whether the temperature of the internal copper plate of the circuit breaker 300 is too high. If none of the set secondary signals are detected, the condition for the circuit breaker 300 to disconnect is not met, and the system returns to the initial condition.

[0155] When a phase current overcurrent signal or other secondary trigger signal is detected in the three-phase inverter component 600, the secondary fault signal is satisfied, and the circuit breaker 300 is triggered to disconnect.

[0156] This configuration, by setting two trigger conditions, makes the control system 200 more accurate and avoids false alarms from the IPM. Only when both the primary and secondary fault signals are met simultaneously will the circuit breaker 300 be triggered to disconnect, effectively protecting the battery, the three-phase inverter assembly 600, and the battery pack 800.

[0157] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in practical applications, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0158] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0159] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the meaning of the above terms in this disclosure according to the circumstances.

[0160] In some embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0161] In some embodiments of this disclosure, the words "exemplarily" or "for example" are suitable to mean examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in some embodiments of this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts by way of example.

[0162] In the description of this specification, features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0163] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A circuit breaker device configured to connect or disconnect a circuit in a control system.

2. The circuit breaker according to claim 1, comprising a disconnecting assembly (301), The segmentation component (301) includes: A housing (31) having a sliding cavity (310) inside; as well as Two disconnecting components (32) are slidably housed in the sliding cavity (310), and the portion of the sliding cavity (310) located between the two disconnecting components (32) is provided with a power device (35), which is capable of pushing the two disconnecting components (32) to move in opposite directions, and each disconnecting component (32) is adapted to disconnect the corresponding connecting conductor (3020).

3. The circuit breaker according to claim 2, wherein, The power unit (35) includes a gas generating device that generates gas to push the two disconnecting members (32) to move away from each other, so that each disconnecting member (32) disconnects a corresponding connecting conductor (3020).

4. The circuit breaker according to claim 3, wherein, The gas generating device includes an explosion structure (33) that generates the gas by explosion.

5. The circuit breaker according to claim 4, wherein, The portion of the sliding cavity (310) located between the two split pieces (32) forms an expansion chamber (311); The explosive structure (33) includes: Gunpowder (331), wherein the gunpowder (331) is disposed in the expansion chamber (311); An electric ignition mechanism (333), the first end of which faces the gunpowder (331), the electric ignition mechanism (333) generating an electric spark to ignite the gunpowder (331); and A trigger terminal (332) is provided, the first end of which is electrically connected to the second end of the electric ignition mechanism (333), and the second end of which is adapted to be electrically connected to the control component (306).

6. The circuit breaker according to claim 5, wherein, A limiting part (312) is provided at one end of the sliding cavity (310) away from the expansion chamber (311); The break member (32) includes an abutment portion (323) configured to abut against the limiting portion (312) so that at least a portion of the break member (32) is located within the sliding cavity (310).

7. The circuit breaker according to claim 6, wherein, The break member (32) also includes: A sliding segment (321), said sliding segment (321) being slidably accommodated in the sliding cavity (310); and Impact section (322), which is connected to the side of the sliding section (321) away from the expansion chamber (311).

8. The circuit breaker according to claim 7, wherein, The impact section (322) is provided with an abutment portion (323), or the sliding section (321) is provided with the abutment portion (323).

9. The circuit breaker according to claim 7 or 8, wherein, The diameter of the sliding segment (321) is larger than the diameter of the impact segment (322), and the sliding segment (321) and the impact segment (322) form the abutment portion (323) at the connection position.

10. The circuit breaker according to any one of claims 7-9, wherein, The minimum inner diameter of the limiting part (312) is greater than the maximum outer diameter of the impact section (322) and less than the maximum outer diameter of the sliding section (321).

11. The circuit breaker according to any one of claims 7-10, wherein, The segmentation component (301) further includes: A sealing element (34) is disposed between the sliding section (321) and the inner wall of the housing (31) so that the cavities on both sides of the sealing element (34) are not connected to each other.

12. The circuit breaker according to claim 11, wherein, The outer periphery of the sliding section (321) is provided with an annular groove; the sealing element (34) includes a sealing ring connected to the annular groove.

13. The circuit breaker according to claim 12, further comprising: Two connecting conductors (3020) spaced apart; The two disconnecting elements (32) respectively disconnect the two connecting conductors (3020).

14. The circuit breaker according to claim 13, wherein, The two breakers (32) are located between the two connecting conductors (3020), and each of the two breakers (32) is arranged opposite to its adjacent connecting conductor (3020).

15. The circuit breaker according to any one of claims 2-14, wherein, Each connecting conductor (3020) includes: A first conductive segment (3021), the first end of which is adapted to be electrically connected to a first electrical component; and A weak segment (3022) is connected to the second end of the first conductive segment (3021), and the severing member (32) is able to press against the weak segment (3022) to disconnect the first conductive segment (3021) from the weak segment (3022).

16. The circuit breaker according to claim 15, wherein, The cross-sectional area of ​​the weak segment (3022) and the first conductive segment (3021) at the contact position is smaller than the cross-sectional area of ​​the first conductive segment (3021), so that the contact position forms a pre-broken portion (3024); The severing member (32) can press against the pre-severing portion (3024) to disconnect the first conductive segment (3021) from the weak segment (3022).

17. The circuit breaker according to claim 16, further comprising: An insulating protective element (3027) is sleeved on the pre-broken portion (3024).

18. The circuit breaker according to any one of claims 13-17, wherein, The connecting conductor (3020) further includes: The second conductive segment (3023) has a first end connected to the end of the weak segment (3022) away from the first conductive segment (3021), and the second end of the second conductive segment (3023) is adapted to be electrically connected to a second electrical component.

19. The circuit breaker according to claim 18, wherein, The first end of the second conductive segment (3023) forms a rotating part (3025) at the contact position with the first conductive segment (3021); The rotation axis of the rotating part (3025) is perpendicular to the sliding direction of the split piece (32).

20. The circuit breaker according to claim 19, wherein, The cross-sectional area of ​​the rotating part (3025) is larger than the cross-sectional area of ​​the pre-cut part (3024).

21. The circuit breaker according to claim 18 or 19, wherein, At least one default portion (3026) is formed between the weak segment (3022) and the second conductive segment (3023), and the default portion (3026) is disposed adjacent to the rotating portion (3025).

22. The circuit breaker according to claim 21, wherein, The at least one default part (3026) includes two default parts (3026), and the two default parts (3026) are respectively located at both ends of the rotating part (3025).

23. The circuit breaker according to any one of claims 18-22, wherein, At least one gap (3028) is formed between the weak segment (3022) and the first conductive segment (3021), and the gap (3028) is disposed adjacent to the pre-break portion (3024).

24. The circuit breaker according to claim 23, wherein, The at least one vacancy (3028) includes two vacancy portions (3028), and the two vacancy portions (3028) are respectively located at both ends of the pre-broken portion (3024).

25. The circuit breaker according to any one of claims 18-24, further comprising: Arc extinguishing grid (303), the breaking member (32) drives the weak segment (3022) to move toward the arc extinguishing grid (303) so that the weak segment (3022) is electrically connected to the arc extinguishing grid (303).

26. The circuit breaker according to claim 25, wherein, The arc-extinguishing grid (303) is located on the side of the weak section (3022) away from the break member (32); The break member (32) drives the weak section (3022) to rotate around the rotation axis so that the end of the weak section (3022) away from the rotating part (3025) is electrically connected to the arc extinguishing grid (303).

27. The circuit breaker according to any one of claims 19-26, further comprising: Connecting conductor (3020); as well as An arc-extinguishing chamber (304) is provided, wherein at least a portion of the connecting conductor (3020) is located within the arc-extinguishing chamber (304) and the arc-extinguishing chamber (304) is provided with an insulating gas.

28. The circuit breaker according to claim 27, further comprising: An arc-extinguishing grid (303) is disposed inside the arc-extinguishing cover (304). The breaking member (32) drives the weak section (3022) to move toward the arc-extinguishing grid (303) so that the weak section (3022) is electrically connected to the arc-extinguishing grid (303).

29. The circuit breaker according to any one of claims 13-28, further comprising: A detection device (305) adapted to detect parameters of the connecting conductor (3020); as well as A control component (306) is provided, with its first end electrically connected to the power unit and its second end electrically connected to the detection device (305), so that the control component (306) controls the start and stop of the power unit (35) according to the parameters of the connecting conductor (3020).

30. The circuit breaker according to claim 29, wherein, The detection device (305) includes: A current sensor (3052) is adapted to detect the current value of the connecting conductor (3020); When the current value is greater than the preset current value, the control component (306) controls the power device (35) to push the two breakers (32) to move away from each other.

31. The circuit breaker according to claim 30, wherein, The current sensor (3052) is connected to the side of the first conductive segment (3021) near the pre-break portion (3024).

32. The circuit breaker according to claim 30, wherein, At least a portion of the connecting conductor (3020) is located outside the arc-extinguishing shroud (304); The current sensor (3052) is detachably connected to the outside of the arc extinguishing chamber (304) and is located near the portion of the connecting conductor (3020) located outside the arc extinguishing chamber (304).

33. The circuit breaker according to any one of claims 30-32, wherein, The detection device (305) further includes a temperature sensor (3051), which is electrically connected to the control component (306) and is adapted to detect the temperature value of the connecting conductor (3020). When the temperature value is greater than the preset temperature value, the control component (306) controls the power device (35) to push the two split pieces (32) to move away from each other.

34. The circuit breaker according to any one of claims 29-33, wherein, The control component (306) includes: Circuit board (3061); and A control chip (3062) is electrically connected to the circuit board (3061).

35. The circuit breaker according to claim 34, wherein, The temperature sensor (3051) and the current sensor (3052) are both electrically connected to the circuit board (3061).

36. The circuit breaker according to claim 35, wherein, The control chip (3062) is located on one side of the circuit board (3061), and the temperature sensor (3051) and the current sensor (3052) are located on the other side of the circuit board (3061).

37. The circuit breaker according to claim 1, comprising: An electrical connection assembly (11) adapted to be connected to an external circuit; as well as, A power assembly (12) is configured to drive the electrical connection assembly (11) to connect or disconnect the external circuit through the electrical connection assembly (11).

38. The circuit breaker according to claim 37 further includes an electronic component (2) for generating an electronic signal configured to control the power component (12) to drive the electrical connection component (11) to operate, so that the external circuit is connected or disconnected through the electrical connection component (11).

39. The circuit breaker according to claim 38, further comprising a housing (4), wherein the electrical connection assembly (11), the power assembly (12) and the electronic assembly (2) are integrated within the housing (4).

40. The circuit breaker according to claim 38 or 39, wherein, The electronic component (2) is located on the side of the power component (12) away from the electrical connection component (11).

41. The circuit breaker according to any one of claims 37-40, wherein, The electrical connection assembly (11) includes an internal connection bar (112) and two external connection bars (111), the two external connection bars (111) being configured to connect to the external circuit. The power assembly is also configured to electrically connect the internal connection bar (112) to the two external connection bars (111), or to disconnect the internal connection bar (112) from the two external connection bars (111).

42. The circuit breaker according to claim 41, wherein, The electrical connection assembly (11) further includes an explosive assembly configured to separate the internal connection bar (112) from the external connection bar (111).

43. The circuit breaker according to claim 42, wherein, The explosive assembly further includes two explosive elements, each of which is located at the connection between the internal connecting row (112) and the external connecting row (111) to separate the internal connecting row (112) from the external connecting row (111).

44. The circuit breaker according to any one of claims 41-43, wherein, The power assembly (12) is connected to the internal connection bar (112); The power assembly (12) drives the internal connecting bar (112) to engage with the two external connecting bars (111) so that the internal connecting bar (112) is electrically connected to the two external connecting bars (111), or the power assembly (12) drives the internal connecting bar (112) to disengage from the two external connecting bars (111) so that the internal connecting bar (112) is disconnected from the two external connecting bars (111).

45. The circuit breaker according to any one of claims 37-44, wherein, The electrical connection assembly (11) includes an internal connection bar (112) and two external connection bars (111), the two external connection bars (111) being configured to connect to the external circuit. The power assembly (12) includes a stationary iron core (121) and an elastic element (122), with a first end of the elastic element (122) connected to the stationary iron core (121) and a second end connected to the internal connecting bar (112).

46. ​​The circuit breaker according to claim 45, wherein, The power assembly (12) further includes at least one movable iron core (123), which is located on the side of the elastic member (122) away from the stationary iron core (121). The movable iron core (123) can move toward the stationary iron core (121) to compress the elastic member (122).

47. The circuit breaker according to claim 46, wherein, The power assembly (12) further includes a guide member connected to the stationary iron core (121), and each of the at least one moving iron core (123) is slidably mounted on the guide member.

48. The circuit breaker according to claim 47, wherein, The guide includes two guide plates (129) which are arranged opposite to each other; The at least one movable iron core (123) includes two movable iron cores (123), which are arranged opposite to each other, and each of the two movable iron cores (123) is slidably mounted on the corresponding guide plate.

49. The circuit breaker according to any one of claims 46-48, wherein, The power assembly (12) also includes a spindle (124), the first end of which is connected to the end of the elastic element (122) away from the stationary iron core (121), and the second end of which is connected to the internal connecting row (112).

50. The circuit breaker according to claim 49, wherein, The power assembly (12) further includes at least one coil group (125), each of the at least one coil group (125) being energized to generate a magnetic field to magnetize the corresponding moving iron core.

51. The circuit breaker according to claim 50, wherein, The power assembly (12) includes two coil groups (125), each of which is located on the side of the corresponding moving iron core (123) away from the mandrel (124).

52. The circuit breaker according to claim 51, wherein, The power assembly (12) also includes an arc extinguishing element (126), which is located on the side of the coil assembly (125) near the electrical connection assembly (11).

53. The circuit breaker according to any one of claims 38-52, wherein, The electronic component (2) includes a temperature sensor (22) for measuring the temperature of the electrical connection component (11).

54. The circuit breaker according to claim 53, wherein, The electrical connection assembly (11) includes an internal connection bar (112) and two external connection bars (111), the two external connection bars (111) being configured to connect to an external circuit, and the two external connection bars (111) being electrically connected through the internal connection bar (112); The temperature sensor (22) is connected to the internal connection bar (112).

55. The circuit breaker according to claim 54, wherein, The electronic component (2) also includes a Hall sensor (23) configured to detect current signals from the external circuit.

56. The circuit breaker according to claim 55, wherein, The electronic component (2) also includes a voltage acquisition unit (24) configured to detect voltage signals of the external circuit.

57. The circuit breaker according to claim 56, wherein, The electronic component (2) also includes a controller (25) electrically connected to the temperature sensor (22), the Hall sensor (23) and the voltage acquisition unit (24). The controller (25) is configured to generate a judgment signal to characterize whether the signals generated by the temperature sensor (22), the Hall sensor (23) and the voltage acquisition unit (24) are abnormal.

58. The circuit breaker according to any one of claims 38-57, further comprising a shield (3) disposed between the power assembly (12) and the electronic assembly (2), configured to isolate electromagnetic signals between the power assembly (12) and the electronic assembly (2).

59. A control system comprising a circuit breaker (300) according to any one of claims 1-36, or comprising at least one circuit breaker (300) according to any one of claims 37-58.

60. The control system according to claim 59, wherein, The control system includes a circuit breaker (300) according to any one of claims 1-36; The circuit breaker (300) includes a three-phase copper busbar (302), which includes three connecting conductors (3020) spaced apart. The control system (200) further includes: Inverter, the inverter being electrically connected to one end of the three-phase copper busbar (302); and An electric motor, which is electrically connected to the other end of the three-phase copper busbar (302); The disconnecting component (301) is capable of disconnecting at least two of the three connecting conductors (3020) of the three-phase copper busbar (302).

61. The control system according to claim 60, wherein, The circuit breaker (300) also includes a current sensor (3052); The control system further includes: The controller is adapted to detect whether the inverter has malfunctioned; the current sensor (3052) is adapted to detect the current value of the three-phase copper busbar (302); In the event that the inverter malfunctions and the current value is greater than the preset current value, the disconnecting component (301) disconnects at least two of the three connecting conductors (3020).

62. The control system according to claim 60 or 61 further comprises: A speed sensor, the speed sensor being adapted to detect the speed value of the motor; In the event that the inverter malfunctions and the rotational speed is greater than the preset rotational speed, the disconnection assembly (301) disconnects at least two of the three connecting conductors (3020).

63. The control system according to any one of claims 59-62, further comprising: A voltage sensor adapted to detect the voltage value of the inner winding of the motor; When the inverter malfunctions and the voltage value is greater than the preset voltage value, the disconnecting component (301) disconnects at least two of the three connecting conductors (3020).

64. The control system (200) according to any one of claims 59-63, wherein, The circuit breaker (300) further includes a temperature sensor (3051), which is adapted to detect the temperature value of the three-phase copper busbar (302); In the event that the inverter malfunctions and the temperature value is greater than the preset temperature value, the disconnection component (301) disconnects at least two of the three connecting conductors (3020).

65. The control system according to claim 59, comprising: Multiple circuit breaker devices (300) according to any one of claims 37-58; Battery pack (800); and A three-phase inverter assembly (600) is connected to the battery pack (800), and a plurality of circuit breakers (300) are provided between the three-phase inverter assembly (600) and the battery pack (800).

66. The control system according to claim 65, further comprising: A motor (400) is connected to the three-phase inverter assembly (600), and at least two circuit breakers (300) are provided between the motor (400) and the three-phase inverter assembly (600).

67. A control method for controlling the control system according to claim 66, wherein, The method includes the following steps: When the control system meets the circuit breaking condition, it controls the power component of the circuit breaking device (300) so that the power component drives the electrical connection component to operate, so that the external circuit is disconnected through the electrical connection component.

68. The control method according to claim 67, wherein, The step of controlling the power component of the circuit breaker (300) when the control system meets the circuit breaker condition, so that the power component drives the electrical connection component to operate, thereby disconnecting the external circuit through the electrical connection component, includes: When a first-level fault signal and a second-level fault signal are received in sequence, the power component of the circuit breaker (300) is controlled so that the power component drives the electrical connection component to operate, thereby disconnecting the external circuit through the electrical connection component.

69. The control method according to claim 68, wherein, The first-level fault signal includes the intelligent power module (IPM) fault signal.

70. The control method according to claim 68 or 69, wherein, The secondary fault signal includes at least one of the current fault value of the three-phase inverter assembly, the voltage fault value of the three-phase inverter assembly, and the temperature fault value of the circuit breaker (300).

71. A vehicle (1000) comprising a circuit breaker according to any one of claims 1-58 or a control system according to any one of claims 59-66.

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