High-voltage box control apparatus and method

Abstract

Provided in the present application are a high-voltage box control apparatus and method, the apparatus comprising a first Hall sensor, a second Hall sensor and a control module. The first Hall sensor is separately connected to the control module and a battery cluster main circuit of the high-voltage box, and is used for sending to the control module an acquired first current value of the battery cluster main circuit. The second Hall sensor is separately connected to the control module and the battery cluster main circuit, and is used for sending to the control module an acquired second current value of the battery cluster main circuit. The control module is used for executing on-off operations on the high-voltage box on the basis of the first current value and the second current value. The present technical solution reduces the problem of damage to high-voltage boxes caused by inaccurate current acquisition or faults of current acquisition apparatuses.

Description

High voltage box control device and method TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage systems, and particularly relates to a high voltage box control device and method. BACKGROUND

[0002] The high voltage box is a management unit of the main circuit of the battery cluster, and provides the state monitoring function of the battery cluster for the energy storage system. The current acquisition detection is an important part of the management of the charging and discharging of the battery cluster by the high voltage box, and plays a decisive role in the safe application and life extension of the energy storage battery pack during the group use.

[0003] The main circuit of the high voltage box in the prior art mainly adopts a single shunt or a single Hall sensor to collect the current of the battery cluster, so as to complete the state monitoring function of the battery cluster by the energy storage system.

[0004] However, the circuit operation safety of the above high voltage box main circuit is low. SUMMARY

[0005] The present application provides a high voltage box control device and method to solve the problem of low circuit operation safety of the traditional high voltage box main circuit.

[0006] In a first aspect, the present application provides a high voltage box control device, comprising:

[0007] a first Hall sensor, a second Hall sensor, and a control module;

[0008] The first Hall sensor is connected with the control module and the main circuit of the battery cluster of the high voltage box respectively, and is used to send the collected first current value of the main circuit of the battery cluster to the control module;

[0009] The second Hall sensor is connected with the control module and the main circuit of the battery cluster respectively, and is used to send the collected second current value of the main circuit of the battery cluster to the control module;

[0010] The control module is used to perform on-off operation on the high voltage box according to the first current value and the second current value.

[0011] Optionally, the control module is specifically used to:

[0012] calculate the current difference value of the first current value and the second current value;

[0013] If the current difference value is less than or equal to a preset current difference value, the circuit breaker in the main circuit of the battery cluster is in a connected state;

[0014] If the current difference value is greater than the preset current difference value, the circuit breaker is switched to a disconnected state.

[0015] Optionally, if the current difference value is greater than the preset current difference value, the control module is further configured to:

[0016] output an abnormal alarm information, the abnormal alarm information being used to indicate that the first Hall sensor and / or the second Hall sensor is damaged.

[0017] Optionally, if the current difference value is less than or equal to the preset current difference value, the control module is further configured to:

[0018] determine the target current value collected by the target Hall sensor as the current of the battery cluster main loop, the target Hall sensor being the Hall sensor with higher accuracy in the first Hall sensor and the second Hall sensor.

[0019] Optionally, the control module is further connected with a pre-charging sub-loop in the battery cluster main loop, and is configured to control the on-off of the pre-charging sub-loop.

[0020] Optionally, the high-voltage box control device further comprises a direct-current power conversion module, which is connected with the battery cluster main loop and the control module respectively.

[0021] In a second aspect, the application provides a high-voltage box control method applied to the control module in the high-voltage box control device of the first aspect, comprising:

[0022] obtaining a first current value of the battery cluster main loop of the high-voltage box collected by the first Hall sensor, and a second current value of the battery cluster main loop collected by the second Hall sensor;

[0023] performing on-off operation on the high-voltage box according to the first current value and the second current value.

[0024] Optionally, performing on-off operation on the high-voltage box according to the first current value and the second current value comprises:

[0025] calculating a current difference value of the first current value and the second current value;

[0026] if the current difference value is less than or equal to a preset current difference value, controlling a circuit breaker in the battery cluster main loop to be in a connected state;

[0027] if the current difference value is greater than the preset current difference value, switching the circuit breaker to a disconnected state.

[0028] Optionally, if the current difference value is greater than the preset current difference value, the method further comprises:

[0029] outputting an abnormal alarm information, the abnormal alarm information being used to indicate that the first Hall sensor and / or the second Hall sensor is damaged.

[0030] Optionally, if the current difference value is less than or equal to the preset current difference value, the control module is further configured to:

[0031] The target current value corresponding to the target Hall sensor is determined as the current of the battery cluster main loop, and the target Hall sensor is the Hall sensor with higher accuracy in the first Hall sensor and the second Hall sensor. Advantages

[0032] The high-voltage box control device and method provided by the application include a first Hall sensor, a second Hall sensor, and a control module. The first Hall sensor is connected with the control module and the battery cluster main loop of the high-voltage box respectively, and is used to send the collected first current value of the battery cluster main loop to the control module. The second Hall sensor is connected with the control module and the battery cluster main loop respectively, and is used to send the collected second current value of the battery cluster main loop to the control module. The control module is used to perform on-off operation on the high-voltage box according to the first current value and the second current value. The technical solution sets two Hall sensors and a control module, collects the current of the battery cluster main loop in the high-voltage box, calculates the current difference between the two groups of current values through the control module, determines the working state of the Hall sensor, and then sets the corresponding control instruction to control the on-off of the high-voltage box, realizes effective detection of the Hall sensor, reduces the damage of the high-voltage box caused by inaccurate current collection, and improves the operation safety of the high-voltage box circuit. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0034] FIG. 1 is a structural schematic diagram of a high-voltage box control device provided by an embodiment of the application;

[0035] FIG. 2 is another structural schematic diagram of a high-voltage box control device provided by an embodiment of the application;

[0036] FIG. 3 is a flow schematic diagram of a high-voltage box control method provided by an embodiment of the application.

[0037] Reference signs: 100-high-voltage box control device; 110-main positive loop; 111-first fuse; 112-main positive relay; 120-main negative loop; 121-second fuse; 122-first Hall sensor; 123-main negative relay; 124-second Hall sensor; 130-precharge sub-loop; 131-precharge resistor; 132-precharge relay; 140-circuit breaker; 150-control module; 160-direct current power conversion module.

[0038] The specific embodiments of the application have been shown by the above drawings, and will be described in more detail hereinafter. These drawings and detailed description are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to any embodiment of the application, unless specified otherwise. Accordingly, when the description of the exemplary embodiments contains language that can imply limitations on the scope of the application, such limitations are not intended to apply to any specific embodiment unless specifically recited in that specific embodiment. For a better understanding, the exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings, in which:

[0040] In the prior art, when collecting the current of the high-voltage box electrical main circuit, a single shunt or a single Hall sensor is usually used to collect the battery cluster current in the high-voltage box. However, once the Hall sensor or the shunt fails, the reliability of current collection cannot be guaranteed, and the high-voltage box on-off operation cannot be performed in real time according to the Hall sensor or the shunt, and the working state of the high-voltage box cannot be effectively adjusted to adapt to the real-time running conditions of the battery cluster.

[0041] In view of the above technical problems, the inventors realize that a single sensor cannot provide accurate current data when the component fails, and cannot provide efficient and reliable control instructions to ensure the operation of the system. Based on this, the inventors, on the basis of in-depth analysis and research on the above technical problems, consider designing a current value double collection scheme, providing a cross-validation method through double collection of current values, and generating corresponding control instructions according to the double collection of current values to perform the on-off operation of the high-voltage box, to realize the rapid response of the system and avoid the damage of the high-voltage box caused by abnormal current.

[0042] The technical solutions of the application and how the technical solutions of the application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the application will be described below with reference to the drawings.

[0043] FIG. 1 is a structural schematic diagram of a high-voltage box control device provided by an embodiment of the application. As shown in FIG. 1, the high-voltage box control device 100 includes:

[0044] a first Hall sensor 122, a second Hall sensor 124, and a control module 150;

[0045] The first Hall sensor 122 is connected with the control module 150 and the battery cluster main loop of the high-voltage box respectively, and is used for sending the first current value collected from the battery cluster main loop to the control module 150.

[0046] The second Hall sensor 124 is connected with the control module 150 and the battery cluster main loop respectively, and is used for sending the second current value collected from the battery cluster main loop to the control module 150.

[0047] The control module 150 is used for performing on-off operation on the high-voltage box according to the first current value and the second current value.

[0048] The high-voltage box can refer to a high-voltage junction box or a high-voltage distribution box, which is a key component in the energy storage system. The high-voltage box can manage the high voltage emitted from the battery energy storage system to ensure that the voltage operates within a safe range, preventing the voltage from being too high or too low, thereby protecting the battery cluster and other electrical components in the energy storage system.

[0049] The Hall current sensor is a sensor made according to the Hall effect, which can be used to detect and measure the current in the loop, facilitating the operation monitoring of the energy storage system and ensuring the normal operation of the system. Through the Hall sensor, the current change in the energy storage battery cluster can also be monitored in real time, so that abnormal conditions (such as overload and short circuit) in the charging and discharging process of the system can be found in time and appropriate measures can be taken for protection.

[0050] The control module 150 is used for receiving current data from the two Hall sensors. An algorithm is built in the control module 150 to compare the two current values. According to the current difference obtained by comparison, the control module 150 instructs the high-voltage box to perform on-off operation, so as to protect the system from possible damage caused by current overload or short circuit.

[0051] FIG. 2 is another structural schematic diagram of the high-voltage box control device provided by the embodiment of the present application. As shown in FIG. 2, the battery cluster main loop mainly includes a main positive loop 110 and a main negative loop 120. The main positive loop 110 includes a first fuse 111 and a main positive relay 112. The main negative loop 120 includes a second fuse 121, a first Hall current sensor 122, a main negative relay 123, and a second Hall current sensor 124.

[0052] The relay mainly plays a role in controlling the on-off of the circuit, safety protection, etc. in the circuit. The fuse is mainly used to cut off the circuit to protect the components from being damaged when the loop is short-circuited. The circuit breaker 140 is mainly used for on-off of the load circuit and cutting off of the fault circuit to prevent accidents from expanding and ensure safety, and has the functions of short-circuit and overload protection.

[0053] Optionally, the control module 150 is specifically used for:

[0054] calculating a current difference value of the first current value and the second current value;

[0055] if the current difference value is less than or equal to a preset current difference value, controlling the circuit breaker 140 in the battery cluster main circuit to be in a connected state;

[0056] if the current difference value is greater than the preset current difference value, switching the circuit breaker 140 to a disconnected state.

[0057] The preset current difference value is a normal fluctuation range of the current reading, which is set according to the system design safety standard. Specifically, the control module 150 first receives the current values from the first Hall sensor 122 and the second Hall sensor 124, and the processor built-in the control module 150 compares the two current values, calculates the difference between them, and obtains the current difference value. Then the control module 150 compares the calculated current difference value with the preset current difference value. If the current difference value is greater than the preset current difference value, the control module 150 determines that there is an abnormality, which may be caused by the failure of the Hall sensor, resulting in abnormal current detection. At this time, in order to prevent potential equipment damage, the control module 150 will send a signal to instruct the circuit breaker 140 to switch to a disconnected state, and then control the main positive relay 112 and the main negative relay 123 to be cut off, so that the power supply can be immediately interrupted to prevent further development of the accident.

[0058] Optionally, if the current difference value is greater than the preset current difference value, the control module 150 is further configured to:

[0059] output an abnormal alarm information, the abnormal alarm information being used to indicate that the first Hall sensor 122 and / or the second Hall sensor 124 is damaged.

[0060] The control module 150 starts its alarm output function when determining that the current difference value is abnormal, specifically, generates specific abnormal alarm information to explain the nature of the abnormality and the possible involved equipment, such as indicating that the first Hall sensor 122 may be damaged or the second Hall sensor 124 reading is abnormal. In addition, in an implementable way, the abnormal alarm information can be conveyed to the system operator or maintenance team in various ways, including but not limited to visual or sound alarm, electronic message sent to the central monitoring system, or directly displayed on the control panel.

[0061] Optionally, if the current difference value is less than or equal to the preset current difference value, the control module 150 is further configured to:

[0062] determining the target current value collected by the target Hall sensor as the current of the battery cluster main circuit, the target Hall sensor being the Hall sensor with higher accuracy among the first Hall sensor 122 and the second Hall sensor 124.

[0063] If the current value difference is less than the preset current value difference, it is determined that the circuit is currently running normally, without overload or short circuit, and in this case, the control module 150 sends an instruction to the circuit breaker 140 to keep it in a connected state, allowing the current to flow normally. In addition, in this case, the control module 150 needs to further analyze the accuracy of the two Hall sensors to identify the sensor with higher accuracy; in one possible implementation, the first Hall sensor 122 is a high-precision CAN (Controller Area Network) Hall sensor, which is generally considered to have higher accuracy than the second Hall sensor 124, and the control module 150 determines the current value collected by the first Hall sensor 122 (high-precision sensor) as the actual current value of the battery cluster main circuit, because the data provided by the high-precision sensor is more reliable and accurate, and is more suitable as a reference for system operation; for example, the first Hall sensor 122 can be a high-precision CAN Hall sensor 122, and the second Hall sensor 124 can be a general Hall sensor, and the high-precision CAN Hall sensor 122 can communicate with the battery management system master control unit through CAN_H and CAN_L to upload the collected main circuit current information, and the general Hall sensor can communicate with the battery management system master control unit through HALL_1 and HALL_2.

[0064] Optionally, the control module 150 is also connected to the pre-charging sub-circuit 130 in the battery cluster main circuit for controlling the on-off of the pre-charging sub-circuit 130.

[0065] The pre-charging sub-circuit 130 is provided before the battery cluster is connected to the main power supply or load, and the battery cluster is pre-charged to prevent damage caused by voltage surge when the battery cluster is directly connected. The pre-charging sub-circuit 130 includes a pre-charging resistor 131 and a pre-charging relay 132, and the pre-charging resistor 131 is mainly used to limit the current, and the voltage of the battery cluster is adjusted through the pre-charging sub-circuit 130, and at the same time, due to the presence of the pre-charging resistor 131, the circulating current between the battery clusters is prevented from being too large.

[0066] Specifically, before the battery cluster needs to be connected to the main power supply or load, the control module 150 determines the matching degree of the voltage of the battery cluster and the system voltage, and if the voltage difference is greater than a safety threshold, the control module 150 instructs the pre-charging relay 132 to close to start the pre-charging process. During the pre-charging process, the current slowly increases through the pre-charging resistor 131 until the voltage of the battery cluster gradually approaches the system voltage, and at the same time, the control module 150 continuously monitors the voltage change and instructs the pre-charging relay 132 to open when the voltage reaches a preset level, completing the pre-charging process.

[0067] Optionally, the high-voltage box control device 100 further includes a direct current power conversion module 160 connected to the battery cluster main circuit and the control module 150.

[0068] The main function of the DC power conversion module 160 is to convert the high-voltage current from the battery cluster main circuit into a lower voltage suitable for the control module 150 and other low-voltage devices, usually involving converting high-voltage DC (such as 1500VDC) into a lower voltage (such as 24VDC or 12VDC), which ensures that the control module 150 and other sensitive electronic devices can operate at a safe and appropriate voltage level, thereby avoiding damage caused by excessive voltage.

[0069] Specifically, the DC power conversion module 160 is directly connected to the battery cluster main circuit to obtain the required input power from the battery cluster, thereby ensuring that the module can directly extract power from the battery cluster main circuit for conversion; at the same time, the output end of the conversion module is connected to the control module 150, providing stable and reliable power supply to the control module 150, so that it can continuously and effectively perform its functions; in addition, in an implementable manner, the operating state of the DC power conversion module 160 can be monitored by the control module 150 to ensure that all electrical elements are operating within the preset voltage and current parameters.

[0070] The high-voltage box control device 100 provided by the embodiments of the present application significantly improves the accuracy of current monitoring and the response ability of the system by integrating a double-Hall sensor system and an advanced control module 150. One high-precision Hall sensor and one ordinary-precision sensor are used for current detection, and the current difference is determined by comparing the current values of the two sensors, so that the control module 150 can select the data of the high-precision sensor as the accurate current value of the battery cluster main circuit within the safe range of the current difference, effectively improving the efficiency, safety and reliability of the entire system, and being suitable for demanding energy storage system environments.

[0071] FIG. 3 is a flowchart of the high-voltage box control method provided by the embodiments of the present application. As shown in FIG. 3, the method is applied to the control module 150 in the high-voltage box control device 100 shown in FIG. 1, and includes:

[0072] S201, obtaining a first current value of the battery cluster main circuit of the high-voltage box collected by the first Hall sensor 122 and a second current value of the battery cluster main circuit collected by the second Hall sensor 124.

[0073] The first Hall sensor 122 and the second Hall sensor 124 each include one high-precision CAN Hall sensor and one ordinary Hall sensor, are connected to the control module 150, and can be connected in a wired manner. Specifically, the first Hall sensor 122 and the second Hall sensor 124 are connected to the battery cluster main circuit of the high-voltage box, and are used to monitor the current condition in real time. In addition, the Hall sensor works based on the Hall effect, that is, when a charged conductor (such as a wire) is placed in a magnetic field, the charges in the conductor will be deflected by the Lorentz force, thereby forming a Hall voltage in the transverse direction of the conductor. The voltage is proportional to the current passing through the conductor, that is, in the high-voltage box control device 100, the Hall sensor is placed near the main positive circuit 110 and the main negative circuit 120 without directly contacting the wire. The Hall chip will generate a corresponding Hall voltage according to the sensed magnetic field strength. The voltage is a direct representation of the current size, that is, the first current value and the second current value in the embodiment of the application.

[0074] S202. According to the first current value and the second current value, the high-voltage box is executed to perform on-off operation.

[0075] The control module 150 first receives the first current value and the second current value, and then detects whether there is a current anomaly in the high-voltage box circuit by comparing the two values. In addition, it should be noted that before performing any on-off operation, the control module 150 will perform multiple checks to confirm that all safety protocols are followed to ensure the safety of the operation. According to the current data received from the Hall sensor, the control module 150 can monitor the running state of the system in real time, ensure that the current runs within a safe range, and quickly respond to any abnormal situation, such as adjusting the load, disconnecting the circuit, etc., to ensure the safe and stable operation of the system.

[0076] Optionally, according to the first current value and the second current value, the high-voltage box is executed to perform on-off operation, including:

[0077] The current difference between the first current value and the second current value is calculated.

[0078] If the current difference is less than or equal to a preset current difference, the circuit breaker 140 in the battery cluster main circuit is in a connected state.

[0079] If the current difference is greater than the preset current difference, the circuit breaker 140 is switched to a disconnected state.

[0080] The control module 150 receives the first current value and the second current value in the battery cluster main circuit from the first Hall sensor 122 and the second Hall sensor 124, then calculates the difference between the two current values to obtain a current difference value, and then compares the current difference value with a preset current difference threshold value to determine whether the current state is normal, wherein the preset current difference threshold value is mainly determined based on system design and safety requirements; for example, when the preset current difference threshold value is 20A, if the current difference sampled by the two Hall sensors is within the allowed range, it is determined that the Hall current sensor is working normally, and the sampling value of the high-precision CAN Hall sensor is used as the output value. This method can ensure the accuracy of the current collection of the energy storage battery cluster through verification, and when the current difference detected by the two Hall sensors is too large and exceeds the set value of 20A, it is determined that the Hall current sensor is abnormal, and an abnormal alarm of the Hall current sensor is issued, and the high-voltage box circuit breaker 140 is operated to cut off the main positive relay 112 and the main negative relay 123, thereby realizing fault detection of the Hall sensor and ensuring safe and reliable operation of the energy storage system. Specifically, when an abnormal current is detected, the control module 150 will control the disconnection of the circuit breaker 140 to cut off the current supply of the main positive circuit 110 and the main negative circuit 120, and then cut off the main positive relay 112 and the main negative relay 123, further preventing the expansion of the fault and protecting the battery and other critical equipment from damage. In addition, it should be noted that when the high-voltage box needs to be closed or enter the maintenance mode under normal operating conditions, the control module 150 will first control the system to reduce the power, gradually reduce the current in the high-voltage box, and then cut off the main positive relay 112 and the main negative relay 123 when the current is reduced to zero, safely placing the high-voltage box circuit in an inactive state. When all the currents are completely disconnected, the control module 150 will perform a state check to confirm that all electrical components have been safely disconnected, ensuring that there is no residual current or voltage.

[0081] Optionally, if the current difference is greater than the preset current difference, the method further comprises:

[0082] outputting an abnormal alarm information, the abnormal alarm information being used to indicate that the first Hall sensor 122 and / or the second Hall sensor 124 is damaged.

[0083] When the calculated current difference exceeds the preset threshold, the control module 150 triggers a safety response process, specifically, the current difference is abnormal, which may indicate that one or both sensors are damaged or there is a measurement error, at this time, the control module 150 will generate an abnormal alarm information, which specifically indicates the possible fault condition, such as "the first Hall sensor 122 may be damaged" or "the second Hall sensor 124 measurement is abnormal", wherein once the abnormal alarm information is output, the system may take further protective measures, including but not limited to immediately disconnecting the power supply to protect the system from further damage; in addition, after the failure occurs, the system records all related event data, including current value, alarm time, response measure, etc., in the system log for subsequent analysis and fault diagnosis.

[0084] Alternatively, if the current difference is less than or equal to the preset current difference, the control module 150 is further configured to:

[0085] determining the target current value corresponding to the target Hall sensor as the current of the battery cluster main loop, the target Hall sensor being the Hall sensor with higher accuracy among the first Hall sensor 122 and the second Hall sensor 124.

[0086] wherein the target Hall sensor is the high-precision sensor, the high-precision CAN Hall sensor communicates with the control module 150 through the CAN bus, and the ordinary Hall sensor communicates with the control module 150 through a simple analog or digital signal interface, such as HALL_1 and HALL_2; in an implementable manner, the current data is sent to the control module 150 in real time through a preset communication interface, and the control module 150 further analyzes and processes the data after receiving the data, such as current monitoring, fault detection and system control.

[0087] The high-voltage box control method provided by the embodiments of the present application provides an efficient and safe way to manage the current state of the battery cluster through accurate current monitoring and intelligent on-off operation, ensures that the control module can make a quick response based on real-time data, thereby maintaining the efficient operation of the system while protecting the safety of the battery and the system, and significantly improving the reliability of the high-voltage box and the overall safety of the system.

[0088] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0089] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0090] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features do not contradict each other, they should be considered within the scope of this specification.

[0091] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A high voltage box control device, characterized by, The application relates to a high-voltage box control device. The first Hall sensor, the second Hall sensor and the control module are included. The first Hall sensor is connected with the control module and the battery cluster main loop of the high-voltage box respectively, and is used for sending the first current value of the battery cluster main loop collected by the first Hall sensor to the control module. The second Hall sensor is connected with the control module and the battery cluster main loop respectively, and is used for sending the second current value of the battery cluster main loop collected by the second Hall sensor to the control module. The control module is used for performing on-off operation on the high-voltage box according to the first current value and the second current value.

2. The apparatus of claim 1, wherein, The control module is specifically used for: calculating the current difference value of the first current value and the second current value; if the current difference value is less than or equal to a preset current difference value, controlling the circuit breaker in the battery cluster main loop to be in a connected state; if the current difference value is greater than the preset current difference value, switching the circuit breaker to a disconnected state.

3. The apparatus of claim 2, wherein, if the current difference value is greater than the preset current difference value, the control module is further used for: outputting abnormal alarm information, wherein the abnormal alarm information is used for indicating that the first Hall sensor and / or the second Hall sensor is damaged.

4. The apparatus of claim 2 or 3, wherein, if the current difference value is less than or equal to the preset current difference value, the control module is further used for: determining the target current value collected by the target Hall sensor as the current of the battery cluster main loop, wherein the target Hall sensor is the Hall sensor with higher precision in the first Hall sensor and the second Hall sensor.

5. The apparatus of claim 2 or 3, wherein, The control module is further connected with a pre-charging sub-loop in the battery cluster main loop, and is used for controlling the on-off of the pre-charging sub-loop.

6. The device of any one of claims 1-3, wherein, The high-voltage box control device further comprises a direct-current power conversion module, which is connected with the battery cluster main loop and the control module respectively.

7. A high voltage cartridge control method, characterized by, The control module applied to the high-voltage box control device in any one of claims 1-6, the method comprises: obtaining the first current value of the battery cluster main loop of the high-voltage box collected by the first Hall sensor and the second current value of the battery cluster main loop collected by the second Hall sensor; performing on-off operation on the high-voltage box according to the first current value and the second current value.

8. The method of claim 7, wherein, The performing on-off operation on the high-voltage box according to the first current value and the second current value comprises: calculating the current difference value of the first current value and the second current value; if the current difference value is less than or equal to a preset current difference value, controlling the circuit breaker in the battery cluster main loop to be in a connected state; if the current difference value is greater than the preset current difference value, switching the circuit breaker to a disconnected state.

9. The method of claim 8, wherein, if the current difference value is greater than the preset current difference value, the method further comprises: outputting abnormal alarm information, wherein the abnormal alarm information is used for indicating that the first Hall sensor and / or the second Hall sensor is damaged.

10. The method according to claim 8 or 9, characterized in that, if the current difference value is less than or equal to the preset current difference value, the control module is further used for: The target current value corresponding to the target Hall sensor is determined as the current of the battery cluster main loop, and the target Hall sensor is the Hall sensor with higher accuracy in the first Hall sensor and the second Hall sensor.

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