High-voltage power distribution box, power distribution equipment and vehicle

Abstract

The invention discloses a high-voltage power distribution box, power distribution equipment and a vehicle. The high-voltage power distribution box comprises a control assembly and a contactor assembly set, the control assembly is connected with each contactor assembly in the contactor assembly set, the number of the contactor assemblies in the contactor assembly set is configured according to the number of electric appliances applying for power utilization and / or the specifications of the electric appliances, the contactor assemblies correspond to the electric appliances one by one, and the power supply specifications of the contactor assemblies are different; wherein the control assembly is used for collecting and analyzing a whole vehicle power distribution control instruction; the whole vehicle power distribution control instruction is sent to each contactor assembly; each contactor assembly is used for carrying out power distribution on corresponding electric appliances by referring to the whole vehicle power distribution control instruction, collecting corresponding power distribution state signals and feeding back the power distribution state signals to the control assembly; the power distribution state signal comprises one or more of the following signals: a voltage signal, a current signal, a contactor auxiliary contact state signal and a current fault state signal; the control assembly is further used for feeding back the power distribution state signals collected by all the contactor assemblies to a vehicle control unit or conducting fault monitoring on the high-voltage power distribution box according to the power distribution state signals collected by all the contactor assemblies.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power distribution technology, and in particular to a high-voltage power distribution box, power distribution equipment, and vehicle. Background Technology

[0002] Heavy-duty vehicles contain various electrical components. For example, the drive motor, as the core power output component, relies on the stator, rotor, and motor controller to work together; the electric air conditioning compressor is driven by the motor to regulate cooling according to the vehicle's interior temperature; the PTC heater uses a thermistor to heat various parts of the vehicle; the DC / DC converter converts high-voltage DC to low-voltage DC to power the low-voltage electrical system; and the on-board charger converts AC to DC during AC charging to charge the power battery.

[0003] In the existing architecture, these electrical devices are managed and distributed by a unified high-voltage distribution box.

[0004] Existing high-voltage distribution boxes are based on fuses, copper busbars, and contactors, and their circuit design integrates communication, control, data acquisition, and drive functions onto a single controller circuit board. Signal transmission and power distribution between various electrical components and the high-voltage distribution box all rely on this integrated circuit, resulting in tight coupling between functional modules. If the function of a single electrical component changes, the entire controller must be modified. In the event of a single-line fault, only the entire high-voltage distribution box can be repaired; it is impossible to quickly locate and replace the faulty module, leading to a severe lack of flexibility and maintainability.

[0005] Therefore, in existing high-voltage distribution boxes, whether it is a single function optimization or a single line fault, the entire high-voltage distribution box needs to be modified or repaired. The high-voltage distribution box has a low degree of universality and cannot flexibly adapt to the different needs of various electrical components. Summary of the Invention

[0006] To address or partially address the technical problem of low versatility and inability to flexibly adapt to the diverse needs of various electrical devices in high-voltage distribution boxes, this invention provides a high-voltage distribution box, power distribution equipment, and vehicle. The high-voltage distribution box includes a control component and several contactor assemblies. Different specifications of contactor assemblies can be selected based on the power requirements of the electrical appliances, or the number of contactor assemblies can be determined based on the number of electrical appliances. Each contactor assembly has a different power supply specification, enabling flexible adaptation to the different needs of various electrical devices. In the event of single-function optimization or single-line fault, only the corresponding contactor assembly needs to be optimized or repaired, without requiring modification or repair of the entire high-voltage distribution box. This improves its versatility and saves maintenance costs.

[0007] To address the aforementioned technical problems, a first aspect of the present invention discloses a high-voltage distribution box, comprising: a control component and a contactor assembly assembly; the control component is connected to each contactor assemblies in the contactor assembly assembly, the number of contactor assemblies in the contactor assembly assembly is configured according to the number and / or specifications of the electrical appliances requesting power, the contactor assemblies and electrical appliances are in one-to-one correspondence, and each contactor assembly has a different power supply specification; wherein,

[0008] The control component is used to collect and parse the vehicle power distribution control commands; and send the vehicle power distribution control commands to each contactor assembly.

[0009] Each contactor assembly is used to distribute power to the corresponding electrical appliances with reference to the vehicle power distribution control command, and to collect the corresponding power distribution status signal and feed it back to the control component; the power distribution status signal includes one or more of the following signals: voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal;

[0010] The control component is also used to feed back the power distribution status signals collected by each contactor assembly to the vehicle controller, or to perform fault monitoring on the high-voltage power distribution box based on the power distribution status signals collected by each contactor assembly.

[0011] Optionally, the control component is specifically configured to parse the power distribution identifier and power distribution control protocol from the vehicle power distribution control command, determine each contactor assembly for performing power distribution control from the contactor assembly set according to the power distribution identifier, and send the power distribution control protocol to each contactor assembly for performing power distribution control.

[0012] Optionally, the contactor assembly includes: a contactor accessory plate and a contactor;

[0013] The contactor includes a main contact switch, an auxiliary contact switch, and a coil; wherein, the main contact switch is connected between a high-voltage positive power supply and a corresponding electrical appliance; the two ends of the auxiliary contact switch are respectively connected to the status acquisition terminal of the contactor auxiliary plate; the two ends of the coil are respectively connected to the control terminal of the contactor auxiliary plate.

[0014] The contactor auxiliary plate is used to control the coil to conduct according to the vehicle power distribution control command, so that the main contact switch and the auxiliary contact switch are closed; wherein, when the main contact switch is closed, high voltage is provided to the corresponding electrical appliance; when the auxiliary contact switch is closed, the status signal of the contactor auxiliary contact is collected and fed back to the control component.

[0015] Optionally, the main contact switch has a first main contact and a second main contact at both ends. The first main contact is connected to the high-voltage positive power supply, and the second main contact is connected to the corresponding electrical appliance. When the main contact switch is closed, the high voltage is provided to the corresponding electrical appliance.

[0016] The auxiliary contact switch has two ends: a first auxiliary contact and a second auxiliary contact. The first auxiliary contact is connected to the first state acquisition terminal of the contactor auxiliary plate, and the second auxiliary contact is connected to the second state acquisition terminal of the contactor auxiliary plate. When the auxiliary contact switch is closed, the first state acquisition terminal acquires the state signal of the contactor auxiliary contact when it is at a low level, and the second state acquisition terminal is internally connected to the control ground.

[0017] The coil is connected to the first control terminal and the second control terminal of the contactor auxiliary plate, respectively. The contactor auxiliary plate is used to output a high level according to the vehicle power distribution control command to turn on the coil. The second control terminal is internally connected to the circuit board ground.

[0018] Optionally, the contactor assembly is connected between the control component and the corresponding electrical appliance via a signal acquisition line, for acquiring one or more of the voltage signal, the current signal, and the current fault status signal and feeding them back to the control component.

[0019] Optionally, the chip select terminal of the control component is connected to the chip select terminal of the contactor auxiliary plate in each contactor assembly;

[0020] The contactor auxiliary plate in each contactor assembly is used to convert the power distribution status signal of the corresponding electrical appliance into a digital signal and then transmit it to the control component.

[0021] Optionally, the SCLK serial clock signal terminal, MOSI master output slave input signal terminal, and MISO master input slave output signal terminal of the control component are respectively connected to the SCLK serial clock signal terminal, MOSI master output slave input signal terminal, and MISO master input slave output signal terminal of the contactor auxiliary board in each contactor assembly.

[0022] Optionally, the control component is further configured to monitor the fault status based on the contactor auxiliary contact status signal and / or the current fault status signal, and to issue an alarm based on the fault status.

[0023] A second aspect of the present invention discloses a power distribution device, the power distribution device comprising a high-voltage distribution box as described in the first aspect.

[0024] A third aspect of the present invention discloses a vehicle, characterized in that it includes a high-voltage distribution box as described in the first aspect.

[0025] Through one or more technical solutions of the present invention, the present invention has the following beneficial effects or advantages:

[0026] This invention discloses a high-voltage distribution box, power distribution equipment, and vehicle. The high-voltage distribution box includes a control component and several contactor assemblies. The high-voltage distribution box of this invention can select contactor assemblies of different specifications according to the power specifications of the electrical appliances, or determine the number of contactor assemblies according to the number of electrical appliances. Each contactor assembly has a different power supply specification, which can flexibly adapt to the different needs of various electrical devices. In the case of single function optimization or single line fault, only the corresponding contactor assembly needs to be optimized or repaired, without the need to change or repair the entire high-voltage distribution box, which can improve its universality and save maintenance costs.

[0027] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 A schematic diagram of a high-voltage distribution box according to an embodiment of the present invention is shown.

[0030] Explanation of reference numerals in the attached drawings: control component 101, contactor assembly 102, contactor auxiliary plate 1021 and contactor 1022, electrical appliance 103, first main contact 1, second main contact 2, first auxiliary contact 3, second auxiliary contact 4, first terminal 5, second terminal 6, first status acquisition terminal a, second status acquisition terminal d, first control terminal b, second control terminal c. Detailed Implementation

[0031] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0032] Firstly, this invention discloses a high-voltage power distribution box that is applicable to special vehicle models, and of course, it is also applicable to other civilian and commercial vehicle models and new energy vehicle models.

[0033] like Figure 1 The diagram shown is a structural schematic of a high-voltage distribution box provided in an embodiment of the present invention. The high-voltage distribution box includes: a control component 101 and a contactor assembly set, wherein the contactor assembly set contains a plurality of contactor assemblies 102; the control component 101 is connected to each contactor assembly 102 in the contactor assembly set. For ease of understanding, the contactor assembly set contains N contactor assemblies 102, where N ≥ 2 and is a positive integer, and the N contactor assemblies 102 have the same structure.

[0034] The number of contactor assemblies in the contactor assembly set is configured according to the number and / or specifications of the electrical appliances requesting power. Each contactor assembly 102 corresponds to one electrical appliance 103, with one contactor assembly 102 controlling one electrical appliance 103. The power supply specifications of each contactor assembly 102 are different. For example, the contactor assembly 102 can be configured with various power supply specifications, such as 60A, 200A, 400A, etc., specifically adapted to the number and / or specifications of the electrical appliances requesting power.

[0035] The control component 101 is used to collect and parse the vehicle power distribution control commands; and send the vehicle power distribution control commands to each contactor assembly 102 in the contactor assembly set.

[0036] In the specific implementation process, the vehicle power distribution control command includes a power distribution identifier and a power distribution control protocol. The power distribution identifier is the identifier of the electrical appliance 103 that needs power distribution, such as an ID number, which can be used to filter the various contactor assemblies 102 used to perform power distribution control. The power distribution control protocol is used to control the various contactor assemblies 102 used to perform power distribution control to the corresponding electrical appliance 103 according to the power supply specifications. It is worth noting that the vehicle power distribution control command can selectively instruct some contactor assemblies 102 to perform power distribution control, or it can instruct all contactor assemblies 102 to perform power distribution control.

[0037] Based on this, the control component 101 is specifically used to parse the power distribution identifier and power distribution control protocol from the vehicle power distribution control command, determine each contactor assembly 102 for performing power distribution control from the contactor assembly set according to the power distribution identifier, and send the power distribution control protocol to each contactor assembly 102 for performing power distribution control, so that it can complete the power distribution to the application electrical appliance 103.

[0038] Furthermore, the control component 101 has a contactor drive function and can also parse the contactor drive signal from the vehicle power distribution control command, and drive the coils in each contactor assembly 102 used to perform power distribution control to conduct through the control drive and protection circuit.

[0039] Each contactor assembly 102 is used to distribute power to the corresponding electrical appliances 103 with reference to the vehicle power distribution control command, and to collect the corresponding power distribution status signals and feed them back to the control component 101. The power distribution status signals include one or more of the following signals: voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal. In practical applications, the combination of the collected signals, such as current signal, voltage signal, contactor auxiliary contact status signal, and current fault status signal, can be adjusted according to functional requirements to expand the application of the actual circuit.

[0040] The control component 101 is also used to feed back the power distribution status signals collected by each contactor assembly 102 to the vehicle controller, or to perform fault monitoring on the high-voltage power distribution box based on the power distribution status signals collected by each contactor assembly 102.

[0041] During the fault monitoring process, the control component 101 is also used to monitor the fault status based on the contactor auxiliary contact status signal and / or the current fault status signal, and to issue an alarm based on the fault status.

[0042] In one optional embodiment, the contactor assembly 102 includes: a contactor auxiliary plate 1021 and a contactor 1022; after the contactor auxiliary plate 1021 and the contactor 1022 are installed, they form an integrated contactor assembly 102. According to the power distribution requirements of the high-voltage distribution box, N contactor assemblies 102 are configured for N power distribution requirements.

[0043] The specific structure of contactor assembly 102 is described below.

[0044] The contactor 1022 includes a main contact switch, an auxiliary contact switch, and a coil; wherein, the main contact switch is connected between a high-voltage positive power supply and a corresponding electrical appliance 103; the two ends of the auxiliary contact switch are respectively connected to the status acquisition terminal of the contactor auxiliary plate 1021; the two ends of the coil are respectively connected to the control terminal of the contactor auxiliary plate 1021. Figure 1 In the diagram, the coil contained in the first contactor assembly 102 is labeled K1, the coil contained in the second contactor assembly 102 is labeled K2, and so on, with the coil contained in the Nth contactor assembly 102 labeled Kn.

[0045] The contactor auxiliary plate 1021 is used to control the coil to conduct according to the vehicle power distribution control command. For example, the contactor auxiliary plate 1021, based on the contactor drive signal parsed from the vehicle power distribution control command, controls the coil to conduct under the drive of the drive and protection circuits, causing the main contact switch and the auxiliary contact switch to close. Specifically, when the main contact switch is closed, high-voltage electricity is provided to the corresponding electrical appliance 103; when the auxiliary contact switch is closed, the status signal of the contactor auxiliary contact is acquired and fed back to the control component 101.

[0046] Specifically, the main contact switch has a first main contact 1 and a second main contact 2 at both ends. The first main contact 1 is connected to the high-voltage positive power supply, and the second main contact 2 is connected to the corresponding electrical appliance 103. When the main contact switch is closed, it provides the high voltage to the corresponding electrical appliance 103. The auxiliary contact switch has a first auxiliary contact 3 and a second auxiliary contact 4 at both ends. The first auxiliary contact 3 is connected to the first state acquisition terminal a of the contactor auxiliary plate 1021, and the second auxiliary contact 4 is connected to the second state acquisition terminal d of the contactor auxiliary plate 1021. When the auxiliary contact switch is closed, the first state acquisition terminal a acquires the state signal of the contactor auxiliary contact when it is at a low level, and the second state acquisition terminal d is internally connected to the control ground. The coil has a first terminal 5 and a second terminal 6 at both ends. The first terminal 5 is connected to the first control terminal b of the contactor auxiliary plate 1021, and the second terminal 6 is connected to the second control terminal c of the contactor auxiliary plate 1021. The contactor auxiliary plate 1021 is used to output a high level according to the vehicle power distribution control command to turn on the coil. The second control terminal c is internally connected to the circuit board ground.

[0047] For signal acquisition, each contactor assembly 102 is connected between the control component 101 and its corresponding appliance 103 via signal acquisition lines. Specifically, each contactor assembly 102 is connected to its corresponding appliance 103 via signal acquisition lines, and then collectively connected to the control component 101. An example of the signal connection line is an SPI (Serial Peripheral Interface) bus, but this is not a limitation. Each contactor assembly 102 acquires one or more of the voltage signal, the current signal, and the current fault status signal via signal acquisition lines and feeds them back to the control component 101.

[0048] During signal acquisition, when there are N contactor auxiliary boards 1021, 6N signal lines are required. Considering the excessive number of lines and complex connections of the contactor auxiliary boards 1021, as well as the instability of analog signal transmission, the CS chip select terminal of the control component 101 is connected to the CS chip select terminal of the contactor auxiliary boards 1021 in each contactor assembly 102. Furthermore, the SCLK serial clock signal terminal, MOSI master output slave input signal terminal, and MISO master input slave output signal terminal of the control component 101 are connected to the SCLK serial clock signal terminal, MOSI master output slave input signal terminal, and MISO master input slave output signal terminal of the contactor auxiliary boards 1021 in each contactor assembly 102, respectively.

[0049] Based on this structure, the control component 101 selects the contactor auxiliary board 1021 to communicate with via the CS chip select signal, and then uses the SCLK serial clock signal terminal, the MOSI master output slave input signal terminal, and the MISO master input slave output signal terminal to synchronously transmit data with the selected contactor auxiliary board 1021. With this design, all contactor auxiliary boards 1021 in this embodiment can share the SPI bus, thereby reducing the number of wiring harnesses.

[0050] Of course, during feedback, the contactor auxiliary board 1021 in each contactor assembly 102 is used to convert the power distribution status signal of the corresponding electrical appliance 103 into an SPI digital signal and then transmit it to the control component 101. Specifically, the contactor auxiliary board 1021 in each contactor assembly 102 has built-in analog signals, so one or more of the collected voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal are analog signals. Converting them into SPI digital signals and transmitting them to the control component 101 can improve signal stability.

[0051] In this embodiment of the invention, the control component 101 mainly performs the following functions: CAN bus communication function, which acquires and parses vehicle power distribution control commands via the CAN bus, and flexibly controls the contactor assembly 102 to achieve power distribution control of electrical appliances 103 with power requirements according to the vehicle power distribution control commands; SPI information reading function, which reads and acquires one or more of the voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal fed back from the contactor auxiliary board 1021 via the SPI bus; status feedback function, which feeds back one or more of the voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal to the vehicle controller via the CAN bus; and alarm function, which determines the fault status of the high-voltage distribution box and alarms via the CAN bus by acquiring and judging the status and faults of the contactor auxiliary board 1021.

[0052] The main functions of the contactor assembly 102 include: contactor drive function, which drives the coil to conduct through the drive and protection circuit according to the contactor drive signal from the control component 101; and information acquisition function, which acquires one or more of the following signals: voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal, and feeds them back to the control component 101.

[0053] The high-voltage distribution box of this invention includes a control component and several contactor assemblies. The high-voltage distribution box of this invention can select contactor assemblies of different specifications according to the power specifications of the electrical appliances, and the number of contactor assemblies can also be determined according to the number of electrical appliances. Each contactor assembly has a different power supply specification, which can flexibly adapt to the different needs of various electrical devices. In the case of single function optimization or single line fault, only the corresponding contactor assembly needs to be optimized or repaired, without the need to change or repair the entire high-voltage distribution box, which can improve its universality and save maintenance costs.

[0054] It is worth noting that the high-voltage distribution box disclosed in this invention can modularly design the control component 1 and N contactor assemblies, consisting of one control module and N contactor assembly modules. Communication, information reading, and control functions are implemented through the control module, while signal acquisition and contactor driving functions are implemented through the contactor auxiliary board. After installation, the contactor auxiliary board and the contactors form an integrated contactor assembly module. Based on the power distribution requirements of the high-voltage distribution box, N contactor assembly modules are configured for N power distribution needs. When the control module communicates with the N contactor assembly modules, one or more of the following signals—voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal—are converted into SPI digital signals through the contactor auxiliary board 1021, and communication is based on the SPI signals.

[0055] Secondly, based on the same inventive concept as the high-voltage distribution box provided in the first aspect of the embodiment, the present invention also provides a power distribution device, the power distribution device including the high-voltage distribution box as described in the first aspect.

[0056] Thirdly, based on the same inventive concept as the high-voltage distribution box provided in the first aspect of the embodiment, the present invention also provides a vehicle, the vehicle including the high-voltage distribution box as described in the first aspect.

[0057] The vehicles provided by this invention include, but are not limited to, special vehicle models, civilian and commercial vehicle models, new energy vehicle models, etc.

[0058] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0059] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A high-voltage distribution box, characterized in that, include: Control components and contactor assemblies; The control component connects to each contactor assembly in the contactor assembly set. The number of contactor assemblies in the set is configured according to the number and / or specifications of the electrical appliances requesting power. Each contactor assembly corresponds one-to-one with an electrical appliance, and each contactor assembly has a different power supply specification. The control component is used to collect and parse the vehicle power distribution control commands; and send the vehicle power distribution control commands to each contactor assembly. Each contactor assembly is used to distribute power to the corresponding electrical appliances with reference to the vehicle power distribution control command, and to collect the corresponding power distribution status signal and feed it back to the control component; the power distribution status signal includes one or more of the following signals: voltage signal, current signal, contactor auxiliary contact status signal, and current fault status signal; The control component is also used to feed back the power distribution status signals collected by each contactor assembly to the vehicle controller, or to perform fault monitoring on the high-voltage power distribution box based on the power distribution status signals collected by each contactor assembly.

2. The high-voltage distribution box as described in claim 1, characterized in that, The control component is specifically used to parse the power distribution identifier and power distribution control protocol from the vehicle power distribution control command, determine each contactor assembly for performing power distribution control from the contactor assembly set according to the power distribution identifier, and send the power distribution control protocol to each contactor assembly for performing power distribution control.

3. The high-voltage distribution box as described in claim 1, characterized in that, The contactor assembly includes: a contactor accessory plate and a contactor; The contactor includes a main contact switch, an auxiliary contact switch, and a coil; wherein, the main contact switch is connected between a high-voltage positive power supply and a corresponding electrical appliance; the two ends of the auxiliary contact switch are respectively connected to the status acquisition terminal of the contactor auxiliary plate; the two ends of the coil are respectively connected to the control terminal of the contactor auxiliary plate. The contactor auxiliary plate is used to control the coil to conduct according to the vehicle power distribution control command, so that the main contact switch and the auxiliary contact switch are closed; wherein, when the main contact switch is closed, high voltage is provided to the corresponding electrical appliance; when the auxiliary contact switch is closed, the status signal of the contactor auxiliary contact is collected and fed back to the control component.

4. The high-voltage distribution box as described in claim 3, characterized in that, The main contact switch has a first main contact and a second main contact at both ends. The first main contact is connected to the high-voltage positive power supply, and the second main contact is connected to the corresponding electrical appliance. When the main contact switch is closed, it provides the high voltage to the corresponding electrical appliance. The auxiliary contact switch has two ends: a first auxiliary contact and a second auxiliary contact. The first auxiliary contact is connected to the first state acquisition terminal of the contactor auxiliary plate, and the second auxiliary contact is connected to the second state acquisition terminal of the contactor auxiliary plate. When the auxiliary contact switch is closed, the first state acquisition terminal acquires the state signal of the contactor auxiliary contact when it is at a low level, and the second state acquisition terminal is internally connected to the control ground. The coil is connected to the first control terminal and the second control terminal of the contactor auxiliary plate, respectively. The contactor auxiliary plate is used to output a high level according to the vehicle power distribution control command to turn on the coil. The second control terminal is internally connected to the circuit board ground.

5. The high-voltage distribution box as described in claim 1, characterized in that, The contactor assembly is connected between the control component and the corresponding electrical appliance via a signal acquisition line, and is used to acquire one or more of the voltage signal, the current signal, and the current fault status signal and feed them back to the control component.

6. The high-voltage distribution box as described in claim 3, characterized in that, The chip select terminals of the control components are respectively connected to the chip select terminals of the contactor auxiliary plates in each contactor assembly; The contactor auxiliary plate in each contactor assembly is used to convert the power distribution status signal of the corresponding electrical appliance into a digital signal and then transmit it to the control component.

7. The high-voltage distribution box as described in claim 6, characterized in that, The SCLK serial clock signal terminal, MOSI master output slave input signal terminal, and MISO master input slave output signal terminal of the control component are respectively connected to the SCLK serial clock signal terminal, MOSI master output slave input signal terminal, and MISO master input slave output signal terminal of the contactor auxiliary board in each contactor assembly.

8. The high-voltage distribution box as described in claim 1, characterized in that, The control component is also used to monitor the fault status based on the contactor auxiliary contact status signal and / or the current fault status signal, and to issue an alarm based on the fault status.

9. A power distribution device, characterized in that, The power distribution device includes a high-voltage distribution box as described in any one of claims 1-9.

10. A vehicle, characterized in that, Includes the high-voltage distribution box as described in any one of claims 1-9.

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