613 results about "Switch matrix" patented technology

The invention discloses a high-integration-level matrix type magnetic sensing chip structure and circuit and a manufacturing method thereof, and belongs to the technical field of semiconductor devices, the chip structure comprises a plurality of matrix elements, a switch matrix and a rear-end interface circuit, and each matrix element comprises a cross-shaped horizontal Hall element and a switch device; the switch matrix is composed of switch devices in matrix elements; the cross-shaped horizontal Hall element matrix is an N * M Hall matrix element formed by an integrated 1 * M Hall element matrix in each row; according to the invention, the structure and the circuit of the matrix type magnetic sensing chip which can be used for statically and dynamically measuring multi-dimensional magnetic field distribution in real time in severe environments such as high temperature, high pressure and high radiation are innovated and manufactured; dynamic and static measurement in a multi-dimensional magnetic field space can be achieved, error compensation is carried out through a circuit, it is ensured that the chip can stably work in the high-temperature, high-pressure and high-radiation environment, and it can be ensured that the chip has high linearity, sensitivity and accuracy.

The invention relates to a system and a method for testing the conductivity of an engine wire harness, and relates to the field of intelligent detection, a programmable switch matrix is formed by acquiring a wire harness layout diagram and arranging matrix relays, and after logic self-inspection is executed, an optimal conduction path is searched based on a hierarchical partition model and a DFS algorithm; according to the method, the path image sets of the partitions are overlapped and mapped to identify abnormal wire harness sections, and finally, abnormity is determined through analog signal injection and waveform analysis and physical repair guidance is performed, so that the technical problems of low test efficiency, poor flexibility and difficulty in adapting to complex variable wire harness layout conductivity test are solved, and the purposes of improving the test flexibility and efficiency and reducing the test cost are achieved. And a fault point can be accurately positioned.

The invention discloses a single-stage bidirectional power conversion topological structure capable of realizing wide-range soft switching and a control method of the single-stage bidirectional power conversion topological structure. In-bridge and inter-bridge phase shift control of a double-half-bridge circuit and a high-frequency switch matrix provides a basis for realizing soft switching of all power tubes; the switching frequency is adjusted in real time according to the magnitude of the port voltage, soft switching within a wide voltage change range is achieved, the current of a bridge arm connected with the primary side of the second transformer is the sum of the primary side current of the second transformer and the current of an inductor connected in parallel with the second transformer, and the inductance value of the inductor connected in parallel with the primary side of the second transformer is designed. The current of the bridge arm connected with the primary side of the second transformer can be effectively changed, so that the soft switching implementation range of the switching tube of the bridge arm connected with the primary side of the second transformer in a wide power transmission range can be expanded.

The invention relates to the technical field of ink-jet printing, and discloses a nozzle driving method, system and device and a storage medium, and the method comprises the steps: generating a digital waveform signal based on a printing demand, and converting the digital waveform signal into an analog voltage waveform through a digital-to-analog conversion module; performing waveform configuration on the analog voltage waveform through an analog switch matrix to generate a target analog waveform; controlling a high-voltage amplification circuit to boost and amplify the target analog waveform to output an initial driving level; driving a nozzle to jet ink droplets based on the initial driving level, and collecting ink droplet state parameters by using an ink droplet monitoring module; comparing the ink droplet state parameters with a preset target value to obtain a comparison result, and generating an adjustment parameter set according to the comparison result; optimizing the initial driving level generation process based on the adjustment parameter set to obtain an optimized driving level; according to the invention, through a closed-loop control process, the problem of poor driving signal adaptability caused by existing open-loop control is effectively solved.

The invention discloses a bus network configuration reconfiguration device and method, a main control unit, equipment and a medium. The bus network configuration reconfiguration device comprises an upper computer and reconfiguration equipment corresponding to M node equipment and P communication networks, the reconstruction device comprises a main control unit and a bus switching matrix. The bus switching matrix comprises a node switching matrix and a network switching matrix; the node switching matrix is respectively connected with the network switching matrix and the P communication networks; the network switching matrix is also connected with the M node devices; and the main control unit controls the node switching matrix and / or the network switching matrix to realize switching of the node equipment accessed to the communication network and / or the communication network accessed by the node equipment based on the configuration information sent by the upper computer. According to the embodiment of the invention, the method can achieve the automatic reconstruction of the high-speed bus network configuration, achieves the switching of the node equipment and the communication network through the node switching matrix and the network switching matrix, enables each signal path to have no branch wiring, and improves the signal transmission quality.

The invention belongs to the technical field of satellite thermal test, and provides a batch satellite thermal test dynamic allocation automatic test system and an application method in order to reduce the cost of a thermal test system and improve the test efficiency, the automatic test system comprises a load test equipment group, a measurement and control test equipment group, a test interface equipment group and an energy equipment group, a switch matrix board card module is connected with an interface flange plate on a vacuum thermal test tank, and is connected with the switch matrix board card module, an application / data server and a test terminal through a network switch. According to the number of satellites to be tested in the configuration parameters, the number of equipment resources, the mapping matrix of the connection relation of all the components and the test working condition, dynamic resource allocation is achieved, and the automatic testing efficiency of batch satellite thermal tests is improved.

The invention discloses a laser wireless energy transfer dynamic MPPT control method based on an RL-PSO hybrid algorithm and a reconfigurable array system, and aims to solve the problems of power oscillation and mismatch loss caused by light spot offset of a photovoltaic array under laser dynamic irradiation. According to the method, reinforcement learning (RL) and particle swarm optimization (PSO) are fused, dynamic parameters such as the light spot moving speed and irradiance are sensed in real time through the RL, the inertia weight and learning factors of the PSO are adjusted in a self-adaptive mode, and collaborative optimization of global search and local tracking is achieved. According to the system level, a reconfigurable photovoltaic array is designed, and according to data of a light spot position sensor, battery series-parallel topology is dynamically adjusted through a switch matrix, and current matching is optimized. According to the method, double-loop control is adopted, wherein an outer-layer RL decision module dynamically switches PSO working modes according to the environment, and an inner-layer PSO module optimizes the working voltage. The system efficiency in a dynamic scene can be improved by 15%-30%, mismatch loss is reduced by 40% or above, and the method is suitable for unsteady-state energy supply scenes such as unmanned aerial vehicles and mobile robots.

The invention discloses a low-cost broadband direct synthesis type frequency source, belongs to the technical field of radar communication, and mainly solves the problem that a traditional direct synthesis type frequency source cannot simultaneously realize low phase noise, short frequency hopping time and low cost. The frequency source comprises a harmonic generation circuit, a power division circuit connected with the harmonic generation circuit, a switch matrix connected with the power division circuit, and a frequency mixing synthesis circuit connected with the switch matrix. Wherein the harmonic generation circuit is used for generating a harmonic signal, the power division circuit is used for dividing the harmonic signal into six paths, and the switch matrix is used for outputting two paths of 12-17GHz signals from the power-divided signals. Compared with the traditional direct synthesis type frequency source, the direct synthesis type frequency source disclosed by the invention has the advantages that one harmonic generator and one switch filter group are omitted, so that the direct synthesis type frequency source disclosed by the invention realizes a low-cost broadband direct synthesis type frequency source.

A reconfigurable, for example with time, network switch matrix coupling switch charge circuits representing multiply and add circuits (MACs) and neurons (MACs with activations) capable of accepting and outputting proportional to charge pulses through crossbars within said network, said crossbars controlled by local controllers and higher level controllers to setup said crossbar communications.

The invention provides a lightweight deployment method and system of a large model on edge computing equipment. According to the method, the acceleration capability portrait is constructed by extracting the hardware instruction set architecture type of the target edge device and the number of parallel computing units. Based on the instruction type, the large model weight is grouped, divided and pre-calculated through a unified lookup table vectorization engine, and a pre-calculation vector matched with the target instruction set is generated; and according to the number of the parallel units and the instruction-level parallel capability, compiling the pre-calculation vector to generate an adaptive parallel table look-up instruction block, distributing execution threads with the same number as the parallel units, and eliminating data dependence conflicts. And finally, loading the instruction block to a shared memory area, configuring topological logic of the photoconductive switch matrix based on an instruction type, and dynamically switching a data transmission path in a hardware instruction period. According to the method, the efficient deployment of the large model in the edge equipment and the low-delay reasoning in the resource-constrained environment are realized.

The invention discloses a dynamic self-adaptive precision switching method for a voice recognition NPU, and aims to solve the core problems that precision and energy efficiency of an end-side voice recognition NPU in multiple scenes cannot be considered at the same time, fixed-precision hardware resources are seriously wasted, software switching efficiency is low, and errors are accumulated. A hardware architecture of a 4 * 4 reconfigurable MAC subunit array and a switch matrix is constructed, and a task-driven adaptive scheduling mechanism, an operation period synchronous control technology (single-period hardware reconfiguration is realized by utilizing idle gap latch configuration) and a direction-sensitive error compensation algorithm (historical data interpolation extension or correction truncation) are combined; hardware-level dynamic lossless switching of the MAC unit between 8bit / 16bit / 32bit precision is realized, so that different voice tasks achieve the highest necessary computing power with the lowest necessary power consumption, no data is lost in the switching process, and finally, the energy efficiency rigidity of a fixed-precision framework is oppositely converted into the precision on-demand supply capability capable of being deployed in an engineering manner.

The invention relates to the field of computer hardware architecture, in particular to a parallel processor dynamic resource allocation method, system and device and a storage medium, and the method comprises the steps: monitoring inter-node communication indexes and in-node parallel processor index data in real time; calculating an optimal connection path through an optimization algorithm which comprehensively considers the communication cost between nodes and the load balancing condition of a parallel processor; dynamically adjusting the configuration of a switch matrix according to the optimal connection path so as to switch the connection topology between the nodes; inputting the monitoring data of the continuous time window into the trained LSTM prediction model, and predicting a load prediction value in a future set time period; and according to the task priority, the resource state of the parallel processor and the load prediction value, dynamically adjusting the resource allocation of the parallel processor, and generating a resource allocation table. The communication cost between the nodes is reduced, the performance bottleneck caused by unsmooth communication is avoided, the load balancing of the parallel processor is realized, and the resource utilization rate is improved.

The embodiment of the utility model relates to the electrical field, and discloses a power output switching device and system. The power supply output switching device comprises two three-phase input ends, two three-phase output ends, two single-phase output ends and a switching matrix, the two three-phase input ends are respectively connected with a three-phase power supply; the switching matrix is used for controlling the conduction state of each phase line level circuit between each three-phase input end and the two three-phase output ends and between each three-phase input end and the two single-phase output ends. Therefore, the three-phase power supply directly outputs three-phase power through the three-phase output end, or the three-phase power supply is adjusted to be a single-phase power supply and then single-phase power is output through the single-phase output end. According to the scheme, different line topologies are formed by controlling the conduction of each phase line level line in the switching matrix, different output modes can be realized, the workload of manual wiring is greatly reduced, the test efficiency is improved, the structure is simple, the implementation is easy, and the cost is saved.

The invention provides a direct-current charging pile bridging power distribution system, and belongs to the technical field of direct-current charging piles. The direct-current charging pile bridging power distribution system is characterized in that three-phase voltage and dual-port current data of a power grid are acquired firstly, and an initial virtual impedance matrix is established; secondly, dividing load requirements into three modes, correcting initial virtual impedance by adopting a floating weight index and an impedance optimization mechanism equation, and outputting optimized virtual impedance parameters; then, a current shunting path is established through bridge switch matrix conduction time sequence control, then the dual-port current balance degree is calculated in real time, a current balance contribution degree evaluation system is constructed, and a duty ratio distribution scheme is optimized; then establishing a current distribution bridge matrix, and dynamically updating matrix parameters to realize accurate power control; optimizing the switching frequency and the dead time by adopting an efficiency improvement algorithm; and finally, outputting the optimized parameters to a bridge switch matrix, generating a new PWM driving signal, and realizing dynamic balance distribution of power of double output ports.

The utility model discloses a switching matrix of a high-power multipath coaxial switch, a coaxial switch switching matrix and a controller. The coaxial switch matrix comprises a plurality of coaxial switches, a plurality of output antennas, a plurality of power sources, a dummy load, a duplexer and a power combiner. The coaxial switch is used for connecting each component, the power source can be connected to any output antenna or dummy load, the duplexer is used for receiving two power sources and outputting the two power sources to any output antenna or dummy load, and the power combiner is used for receiving and combining a plurality of power sources and outputting the power sources to a specific output antenna or dummy load; and the controller is used for controlling the coaxial switch to switch.

Systems and Methods for capacitance testing of a unit under test with parasitic capacitance directed to a guard rail. The system includes test points, wherein the plurality of test points are divided into at least two groups; a stimulus source; a first group guard relay electrically connected to each of the test points in a first; a second group guard relay electrically connected to each of the test points in a second; a guard rail coupled to the first group guard relay and the second group guard relay; a first group return relay electrically connected to each of the test points in a first group; a second group return relay electrically connected to each of the test points in a second group; a current measurement rail coupled to the first group return relay and the second group return relay; a current meter coupled to the measurement rail; and a controller.

The invention discloses a multi-frequency-point multi-polarization parallel sampling phased-array antenna automatic calibration platform, and relates to the technical field of antennas, and the platform comprises a control center which is used for parameter modeling and test task configuration, parallel sampling strategy generation, and data storage and tracing; the FPGA hardware controller is used for generating synchronous trigger pulses and synchronously triggering the radio frequency switch matrix, the multi-path signal source, the six-axis mechanical arm, the multi-probe array module, the double-axis rotary table and the vector network analyzer VNA array; the radio frequency switch matrix is used for quickly switching multi-frequency-point multi-polarization signals; the multi-path signal source, the six-axis mechanical arm, the multi-probe array module, the double-axis rotary table and the vector network analyzer VNA array are used for synchronously collecting test data; the data processing module is used for receiving the sampling data, calculating a test index and carrying out closed-loop compensation and result verification; the test efficiency, the equipment utilization rate and the measurement precision are remarkably improved, and full-process automatic calibration and multi-dimensional data tracing are achieved.

A towing vehicle and the trailer include respective batteries and electric powertrain for propulsion. A connector system connects the vehicle and trailer via a plurality of conductors, a plug, and a socket including at least seven connector pins. Due to the wire gauge, each conductor carries no more than 20 amps. When a driving state is detected, a first switch matrix in the vehicle and a second switch matrix in the trailer enter a first configuration to connect a plurality of light sources in the trailer to a lighting signal generator in the vehicle. When a charging state is detected, a second configuration of the switch matrices is entered in order to carry a charging current which is divided in parallel among a plurality of conductors in the connector system and then recombined in order to provide a charging current greater than 20 amps.

A component die validation built-in self-test (VBIST) engine is presented. In an aspect, a component die includes component circuitry for performing a component function, interface circuitry for communicating with another die, and a VBIST circuit. The VBIST circuit includes a traffic generator that generates test data streams, a tracker that receives and validates test data streams, and a configurable switching matrix for coupling the traffic generator to at least one of the component circuitry, the interface circuitry, or the tracker, and for coupling at least one of the component circuitry, the interface circuitry, or the traffic generator to the tracker. The VBIST circuit can send traffic to and from the component circuitry directly, or indirectly via the interface circuitry in loopback mode, and can be used for memory initialization and test.

The invention relates to the field of micro-grids, and discloses a DC-DC direct current power module flexible distribution method and system for a multi-source micro-grid. Comprising a multi-source direct-current power supply unit, a multi-source direct-current bus switch matrix unit, a multi-source direct-current bus unit, an input switch matrix unit, a DC-DC direct-current power unit module, an output switch matrix unit, a direct-current energy storage unit and a direct-current load unit, through the technical scheme provided by the invention, sharing and flexible distribution of the DC-DC direct current power modules among the subsystems in the micro-grid can be realized, the utilization rate of the DC-DC direct current power modules is improved, and the electric energy loss caused by multiple times of conversion of the DC-DC direct current power modules in the electric energy transmission process is reduced.

The invention introduces a Doppler radio direction finding system, which relates to the technical field of radio navigation and comprises an antenna array unit, a radio frequency switch matrix, a logic controller, a single-channel receiver and a signal processing unit. The logic controller drives the radio frequency switch matrix to alternately execute clockwise and anticlockwise antenna scanning actions in a single measurement period, and the signal processing unit respectively extracts phase slopes corresponding to forward and reverse scanning, generates an environment error component according to the sum of the two phase slopes and identifies a specific antenna oscillator at a standing wave node. The logic controller responds to the feedback instruction and physically skips the conduction operation on the specific antenna oscillator in the subsequent time sequence, the physical symmetry of positive and negative scanning and an environment feedback mechanism are utilized, environment standing wave interference is actively avoided on the premise that radio frequency channels are not increased, and qualitative change improvement of anti-multipath direction finding precision under a single-channel system is achieved.

The invention provides a real-time online self-calibration method and system for a charge and discharge test channel, and relates to the technical field of automatic calibration. According to the method, key parameters of each test channel are continuously monitored through an upper computer, and once the control precision of a certain channel exceeds a preset threshold due to deviation, a system automatically identifies the channel as a to-be-calibrated channel. And then, the system intelligently matches and allocates an available target independent calibration channel according to the channel information and the real-time operation state of each calibration channel in the calibration module. Through automatic operation of the switch matrix, a to-be-calibrated channel is disconnected from a test object and connected with a target calibration channel, the target calibration channel is controlled to carry out multi-point calibration on the to-be-calibrated channel, data are collected to generate a calibration curve, a new calibration coefficient is calculated according to the calibration curve, the coefficient is written into the to-be-calibrated channel, and after calibration is completed, the to-be-calibrated channel is calibrated. And the channel automatically recovers the original test process. On-line and closed-loop full-automatic calibration is realized in the whole process, and continuity and accuracy of test data are ensured.

The invention relates to the technical field of integrating instruments, in particular to a multi-interface heat flow integrating instrument, which comprises a multi-system input interface unit, and is characterized in that pulse signals, 4-20mA current signals and differential voltage signals are accessed through a phoenix terminal array; the input end of the heterogeneous switch matrix is electrically connected with the output end of the multi-system input interface unit, and the heterogeneous switch matrix is used for matching signal types and frequency bands of output signals of different types of sensors; and the input end of the optomagnetic double-coupling driving module is connected with the control port of the heterogeneous switch matrix, so that the signal integrity and the system safety are improved. Compared with the prior art, by arranging the multi-system input interface unit, the standby power consumption is greatly reduced, the system response speed is improved, the structure has the characteristics of high adaptability, high compatibility and low power consumption, and a high-reliability and intelligent access platform is provided for parallel deployment of various heat flow sensors.

The invention provides a parallel main cabinet type direct current charging pile system, which comprises a main control unit, at least one power distribution matrix unit, at least one main cabinet and a plurality of charging terminals, and is characterized in that each main cabinet is internally provided with a plurality of pluggable power supply modules, and each charging terminal is provided with at least one charging gun; the switching control logic of the power distribution matrix unit supports any power scheduling across a main cabinet, across a charging terminal and across a charging gun; each power distribution matrix unit is constructed as an M * N full-connection switch matrix, and the power distribution matrix unit dynamically switches the output power of any one power supply module to any one charging gun. The main control unit dynamically dispatches the output ports of the SCU to be connected in parallel according to the number of the charging gun, automatic superposition of power of multiple main cabinets is achieved, the megawatt charging requirements of electric heavy trucks, buses and the like are met, any power module is supported to be correspondingly connected with the charging gun of any number, and the physical boundary among the main cabinets, the charging terminals and the charging gun is broken.

The invention discloses a high-efficiency single-stage bidirectional power conversion topological structure capable of realizing full-range soft switching and a control method of the high-efficiency single-stage bidirectional power conversion topological structure. In a single-stage bidirectional power conversion topology formed by double half bridges and a switch matrix, a controlled current source connected in parallel with a primary side of a second transformer is designed; the current on a bridge arm connected with the primary side of the second transformer can be effectively changed, so that the soft switching range of a switching tube on the bridge arm in a wide power transmission range is widened, and full-range soft switching in a power frequency period can be realized in any load range; the controlled current source is designed to only work before and after the switching moment of the primary side switching tube of the second transformer, the current stress of the switching tube can be effectively reduced, and meanwhile, the loss of the additional controlled current source is very small. According to the invention, the working range of the soft switching is widened, the additional loss caused by the soft switching is greatly reduced, higher efficiency and higher power density can be realized, and the cost advantage is realized.

The application discloses a single-stage bidirectional power conversion topology structure capable of realizing wide-range soft switching and a control method thereof. The bridge-in and bridge-between phase shift control of a double half-bridge circuit and a high-frequency switch matrix provides a basis for realizing soft switching of all power tubes. The soft switching of a wide voltage variation range is realized by real-time adjustment of a switching frequency according to the size of a port voltage. The bridge arm current connected with the primary side of a second transformer is the sum of the primary side current of the second transformer and the inductance current connected with the primary side of the second transformer in parallel. By designing the inductance value of the parallel inductance connected with the primary side of the second transformer, the bridge arm current connected with the primary side of the second transformer can be effectively changed, so that the soft switching realization range of the switching tube of the bridge arm connected with the primary side of the second transformer under the wide power transmission range can be expanded.

The invention discloses a vehicle-mounted GNSS (Global Navigation Satellite System) multi-interference source monitoring and direction-finding device and a monitoring and direction-finding method, the device comprises a monitoring and direction-finding antenna and a monitoring and direction-finding host, the monitoring and direction-finding antenna comprises an antenna unit, a switch matrix, an electronic compass and an antenna controller, the antenna unit is electrically connected with the switch matrix, and the switch matrix is electrically connected with the electronic compass. The switch matrix and the electronic compass are electrically connected with the antenna controller respectively; the monitoring direction-finding host comprises a radio frequency receiving module, a signal processing module, a main control module and a power supply module. The monitoring and direction finding device disclosed by the invention is high in maneuverability, and can be carried on a vehicle platform to realize rapid monitoring and troubleshooting of interference sources in a certain area; the monitoring range is wide, satellite navigation interference signals in the vehicle driving range can be monitored in real time, and the detection range is wider than that of traditional handheld interference source monitoring and direction finding equipment.

The embodiment of the invention provides a power distribution device and charging equipment comprising the power distribution device, and relates to the technical field of energy. The power distribution device is used for distributing input current into at least one path and outputting the current, the power distribution device comprises a mounting seat, a busbar and a switch matrix assembly, the busbar is fixed on the mounting seat and used for current input or output, and the switch matrix assembly is fixed on the busbar. The switch matrix assembly comprises a shell, a first circuit board, a switch device and a metal sheet, the shell is fixed on the mounting seat, the shell is provided with an opening communicated with the internal space of the shell, and the opening faces the mounting seat; the first circuit board is fixed in the shell; the plurality of switching devices are fixed on the first circuit board; the metal sheet is fixed on the plate surface, facing the opening, of the first circuit board, the metal sheet is electrically connected with at least one of the switching devices, and one of the metal sheet and the busbar penetrates through the opening and is connected with the other one.

The invention discloses an amplitude-adjustable attenuation circuit network for differential signal transmission. The amplitude-adjustable attenuation circuit network is composed of an attenuator I and an attenuator II. Wherein a common-mode feedback circuit is arranged between the attenuator I and the attenuator II. The attenuator I is introduced into an anti-ESD impact module which is composed of an input end back-to-back diode and used for resisting ESD impact. Differential signals at the input end of the attenuator I are subjected to voltage division through fixed resistors RS1 and RS1 < n > and binary weight adjustable resistors RS2 and RS2 < n >, the attenuator II is connected to a transmission channel in parallel, and the differential signals are subjected to further differential mode attenuation through binary weight adjustable capacitors CSp and CSn. The attenuation circuit network dynamically switches attenuation paths through an MOS tube switch matrix, respectively supports attenuation amounts from-1dB to-6dB and from-0.3 dB to-7dB, realizes high stepping precision, finally realizes synchronous attenuation for common-mode and differential-mode voltages, retains differential-mode attenuation of common-mode levels, and optimizes low-frequency amplitude attenuation and high-frequency signal integrity at the same time.

The invention discloses a cluster combining control system and method for high-voltage battery clusters, and the system comprises batteries which are connected in series to form battery packs, and each battery pack is managed and controlled by a battery pack main control module; the battery pack main control module comprises a temperature sampling circuit, a first voltage and current sampling circuit, a DCDC circuit, a switch matrix circuit and a CAN bus communication circuit. The DCDC circuit and the first battery pack are connected in series to form a second battery pack, and a plurality of second battery packs are connected in series to form a battery cluster; each battery cluster is managed and controlled by a battery cluster main control module, and the battery cluster main control module controls a plurality of battery pack main control modules at the lower level to carry out equalization and voltage stabilization operation; the upper level of the battery cluster main control module is provided with an energy storage system main control module, and the energy storage system main control module obtains state information of each battery cluster and controls the lower level battery cluster main control module to perform cluster merging. The circulating current influence between the battery clusters is reduced, the risk that the battery clusters are overheated or damaged is avoided, and the service life of the battery is prolonged.