583 results about "Constant current source" patented technology

The embodiment of the invention discloses an abnormity monitoring system applied to a plasma etching machine. The abnormity monitoring system comprises constant current source equipment, a coil, a coil detection circuit and a controller, and the constant current source equipment is configured to output driving current according to preset etching process parameters; the coil is configured to generate a magnetic field in the etching cavity in response to the input of the driving current to guide the plasma to move towards the direction of the substrate so as to etch the substrate; the coil detection circuit is configured to detect coil state data of the coil; the controller is configured to generate device service information based on the coil state data. According to the embodiment of the invention, the working state of the coil is monitored through the coil state data, and the actual condition of the coil is reflected through the equipment maintenance information, so that a user can quickly know whether the coil is in an abnormal state, the user is helped to quickly position the maintenance direction, the user is prevented from detaching and maintaining the coil from the etching cavity, and the user experience is improved. And various resource investments wasted due to the fact that the coil is abnormal do not exist.

The invention discloses a platinum resistor high-precision temperature measuring device capable of automatically identifying a wiring mode. The platinum resistor high-precision temperature measuring device comprises a power supply module, a signal detection module, an isolation module, a signal processing module and a cold end temperature measuring module. The power supply module supplies power to the signal detection and processing module. The signal detection module comprises a sensing probe, a wiring identification circuit, a constant current source, a measuring circuit and an analog-to-digital conversion circuit. The sensing probe measures the measured temperature, the wiring identification circuit automatically judges a two-wire system, a three-wire system or a four-wire system and feeds back a result, the constant current source provides positive and negative constant current excitation, and the measuring circuit collects and processes feedback voltage and then sends the feedback voltage to the analog-to-digital conversion circuit. The analog-to-digital conversion circuit is connected with the signal processing module through the isolation module, and the signal processing module calls a corresponding algorithm according to a wiring identification result and outputs final temperature data. According to the invention, high-precision temperature measurement at the grade of + / -0.02 DEG C can be realized in the range of-200 DEG C to 850 DEG C under the three / four-wire system and low-speed sampling conditions.

The invention discloses an eddy current displacement sensor sine constant current source excitation method, and belongs to the technical field of sensor measurement and control. The method comprises the following steps: S1, generating positive and negative symmetric reference voltages through a reference voltage source circuit; s2, outputting a square wave control signal with adjustable frequency by the control chip, and driving a switching circuit to generate a square wave taking the positive and negative reference voltage as a level; s3, processing the square wave through a filter circuit to obtain a standard sine wave voltage signal; and S4, converting the sine voltage signal into sine constant current source excitation through a Howland current source circuit, and outputting the sine constant current source excitation to a sensor probe coil. According to the invention, through combination of digital control and analog conversion, the circuit structure is simplified, the cost is significantly reduced, and convenient adjustment of the output frequency and high stability and precision of the output current are realized at the same time.

The invention relates to the technical field of gas detection, in particular to a detection circuit based on an NTC thermistor and a heat conduction meter. The detection circuit based on the NTC thermistor comprises a main NTC thermistor which is suspended in air flow; the constant current source circuit is used for providing constant working current for the main NTC thermistor; the detection resistor is arranged between the main NTC thermistor and a ground node; the ADC sampling circuit is used for sampling analog voltages at two ends of the detection resistor into digital signals; the constant temperature adjusting circuit is used for controlling the magnitude of the current output by the constant current source circuit according to the voltage of the main NTC thermistor, so that the main NTC thermistor is kept at the target temperature; the temperature compensation circuit is used for detecting the temperature of the environment where the heat conduction measuring meter is located; and the processing unit is used for determining a detection result according to the digital signal and compensating the detection result according to the environment temperature. According to the detection circuit based on the NTC thermistor, the response speed and the measurement precision of measurement are improved.

The invention discloses an automatic temperature compensation circuit and method based on a thermal flowmeter, and relates to the technical field of temperature compensation, and the compensation circuit comprises a constant current source module used for driving the thermal flowmeter; the Wheatstone virtual bridge arm is used for acquiring a changed digital-to-analog converter output voltage value output by the controller, and performing voltage conversion on a first voltage and a second voltage which are output on the thermal flowmeter due to the change of the external temperature according to the output voltage value to obtain a third voltage; the digital-to-analog converter is used for performing correction compensation on the third voltage according to the correction compensation value calculated by the controller; and the differential amplification module adopts a differential amplifier to amplify the third voltage and the fourth voltage output by the thermal flowmeter, and outputs a compensated flow signal. The compensating circuit is simple in structure and higher in reliability and precision, and compared with a digital potentiometer, the output value of the Wheatstone virtual bridge arm is changed by using the output value of the digital-to-analog converter, so that the adjusting resolution is higher.

The invention provides a magnetic field polarity monitoring system applied to a plasma etching machine, and relates to the technical field of magnetic field polarity monitoring, the magnetic field polarity monitoring system is used for monitoring whether the magnetic field polarity is successfully switched, the magnetic field polarity monitoring system comprises a controller, a coil and a constant current source device, the controller is configured to send a magnetic field polarity switching instruction to a power supply output circuit; the power output circuit is configured to output a target driving signal to the coil; the coil is configured to switch magnetic field polarity in the etching cavity in response to a target driving signal; and the polarity monitoring circuit is configured to monitor a target driving signal output by the power supply output circuit and feed back a magnetic field polarity switching result to the controller according to the target driving signal and the magnetic field polarity switching instruction. By adding the polarity monitoring circuit, active monitoring of the polarity of the output magnetic field of the constant-current source equipment can be realized, the output accuracy of the constant-current source equipment is improved, the working efficiency of the coil is improved, and the running safety of the constant-current source equipment and the coil is also improved.

The invention discloses a matrix type temperature detection system and method based on temperature-sensitive diodes, the problems of complex wiring and large temperature drift of a traditional multi-node temperature measurement system are solved through M * N matrix layout, row and column time-sharing gating and constant current driving technologies, the system adopts an independent column constant current source to ensure the measurement consistency, and a high-precision ADC and a dynamic calibration algorithm are combined, so that the measurement accuracy is improved. And the precision of + / -0.2 DEG C is realized within the range of 50-150 DEG C. The method is particularly suitable for high-density temperature measurement scenes such as battery thermal management, electronic equipment overheating monitoring and the like.

An interface module for charging and discharging an electrochemical energy store for an electrical consumer, in particular for an electric-motor-powered vehicle, includes a first interface and at least one second interface that is electrically connected to the first interface. The first interface is designed, in particular of proprietary design, such that the interface module is connectable to a corresponding counterpart of the electrochemical energy store. The at least one second interface is of universal design such that the interface module is connectable to a corresponding counterpart interface of an external constant-voltage or constant-current source for the purpose of charging the electrochemical energy store. The at least one second interface is further connectable to a corresponding counterpart interface of a further electrical consumer for the purpose of discharging the electrochemical energy store.

The invention provides an overhead atmospheric temperature measuring device and method. The measuring device comprises at least one temperature probe and a temperature measuring circuit. The temperature probe adopts a patch type four-wire platinum resistor temperature sensor, spaceflight white paint is coated on the surface of the temperature probe and a nearby cable, and the temperature probe is arranged on the outer surface of the high-altitude balloon; the temperature measurement circuit adopts a four-wire system constant current source temperature measurement circuit and comprises a power conversion circuit, a constant current source circuit, a filter circuit and an instrument amplification circuit.

The embodiment of the invention discloses an adjustable constant current source power control circuit, which is used for controlling the power of an adjustable constant current power supply and comprises a voltage sampling circuit, a divider circuit and a voltage selection circuit, the voltage sampling circuit is connected with the adjustable constant current source and is used for acquiring a first voltage from the adjustable constant current source according to a preset proportionality coefficient; the divider circuit is connected with the voltage sampling circuit and is used for calculating and dividing according to a preset reference voltage and the first voltage to obtain a second voltage; the voltage selection circuit is formed by connecting a first voltage follower and a second voltage follower in parallel, the first voltage follower is connected with the divider circuit and used for following a second voltage, the second voltage follower is used for following a third voltage, and the third voltage is determined according to a preset value; a selective switch is formed between the first voltage follower and the second voltage follower, and the selective switch is used for selecting the output of the first voltage follower or the output of the second voltage follower to be connected to the adjustable constant current source. According to the technical scheme provided by the invention, tedious designs of other circuits such as a PWM pulse width detection circuit and a maximum pulse limiting circuit are omitted, and the circuit has the characteristics of simplicity and high efficiency.

The invention relates to the technical field of detection circuits suitable for various electricity utilization information acquisition terminals, and discloses a detection circuit method suitable for various electricity utilization information acquisition terminals. The method comprises the following steps: setting an environment temperature, calibrating a shunt resistor and a thermistor, constructing a three-order resistance-temperature mapping relation, and calculating thermal resistance and thermal response characteristics to realize accurate modeling; a thermistor is attached to a shunt resistor, heat-conducting silicone grease is added to form a thermal coupling structure, voltage is collected through a constant current source and a differential amplifier, a resistance value is converted into temperature in real time, instantaneous current is inversely calculated based on a heat balance equation, then energy integration and grade judgment is completed, and various electrical parameter indexes are output. According to the method, modeling, collection, conversion and inversion processes are integrated, a complete thermal-electric detection link is constructed, a traditional current sensor is not needed, and the method has the advantages of being compact in structure, low in cost, flexible in deployment and the like and is suitable for a low-power-consumption distributed terminal.

The invention relates to the technical field of lamp bead active heat dissipation, and discloses an LED lamp bead active heat dissipation system and method, and the method comprises the steps: injecting a micro-current pulse into a PN junction of an LED chip through a constant current source, collecting a forward voltage drop sampling value, and collecting a substrate temperature sampling value; calculating a junction temperature value based on the forward voltage drop sampling value, and calculating a junction-to-case temperature difference value and a substrate temperature rise rate value; setting an early-warning state identifier when the junction-to-case temperature difference value exceeds an early-warning threshold value and the duration meets a preset duration, setting an alarm state identifier when the junction-to-case temperature difference value exceeds an alarm threshold value, and shielding thermal runaway detection when the substrate temperature rise rate value exceeds an environment thermal shock threshold value and the junction-to-case temperature difference value is smaller than an environment exclusion threshold value; when the state identification is the normal state identification, calculating a first compensation current value; and when the state identification is the early warning state identification, a second compensation current value is calculated, and when the state identification is the alarm state identification, an alarm current limiting value is calculated, so that the working stability and long-term reliability of the LED in a wide temperature range are ensured.

The invention discloses a wind turbine generator blade lightning protection intelligent detection system and method based on an unmanned aerial vehicle. The system comprises an unmanned aerial vehicle platform, a force and position hybrid control assembly, an electrical measurement unit and a ground data processing unit. The unmanned aerial vehicle carries the detection mechanism to fly to the position of the blade lightning arrester, stable contact is achieved through force sensing feedback, a constant current source applies a test current, the on resistance is measured, and data is returned in real time. And the ground unit filters, compensates and judges the multi-point measurement result to generate a conduction state report. The system can automatically complete lightning protection channel detection under an unattended condition, has the advantages of high detection precision, strong environmental adaptability, good safety, high efficiency and the like, and is suitable for rapid inspection and state evaluation of onshore and offshore wind turbine generators.

The invention discloses a dam anti-seepage body integrity detection method based on an artificial power supply. Comprising the following steps: injecting a broadband excitation current signal into a dam anti-seepage body through a multi-frequency program control constant current source; a modular distributed electrode array is adopted to collect and obtain voltage data of the surface of the dam anti-seepage body in real time; high signal-to-noise ratio voltage data is obtained by adopting filtering processing and a digital phase-locked amplification technology; carrying out three-dimensional inversion calculation by adopting an improved electrical impedance tomography algorithm, and reconstructing an internal conductivity distribution image of the dam anti-seepage body; analyzing, identifying and positioning defects through a deep learning model; and constructing an electro-seepage coupling inversion model, converting the internal conductivity distribution image based on the dam anti-seepage body into permeability coefficient distribution, and generating an integrity evaluation report of the dam anti-seepage body. Compared with a traditional detection method, the method is high in detection precision, wide in application range and high in detection efficiency, and a brand new technical means is provided for evaluating the health state of the dam seepage-proofing body.

The application provides a constant current source circuit, which comprises a three-terminal adjustable voltage reference chip, an operational amplifier and a power supply end, a first resistor, an NMOS tube, a load resistor and a power supply ground end connected in series; the three-terminal adjustable voltage reference chip is connected with the power supply end and the operational amplifier; the NMOS tube comprises a D pole, an S pole and a G pole; the NMOS tube is connected with the first resistor through the D pole, connected with the load resistor through the S pole and connected with the output end of the operational amplifier through the G pole; the current flowing through the load resistor is controlled by controlling the voltage between the S pole and the G pole; and the constant control of the current flowing through the load resistor by the NMOS tube is realized. The constant current source circuit provided by the application not only does not generate common-mode voltage, but also improves the constant current source output current and the stability of the constant current source.

The utility model discloses a feedback module and a signal lamp, and belongs to the technical field of signal lamps. The input end of the adjustable constant current source is electrically connected with the output end of the signal input unit; the light emitting unit is electrically connected with the output end of the adjustable constant current source; the single chip microcomputer is electrically connected with the output end of the signal input unit through an optocoupler detection unit; and the communication unit is in communication connection with the single chip microcomputer. The single-chip microcomputer is connected with the optocoupler detection unit electrically connected with the output end of the signal input unit, so that the single-chip microcomputer obtains the state information of the signal lamp, the communication unit communicates with the traffic command center, and the problem that the traffic command center is difficult to receive the state information of the signal lamp in real time is solved.

The invention provides a method and equipment for assisting in improving exercise based on wearable electrical stimulation, wearable electrical stimulation equipment, exercise measurement equipment and a control terminal. Signal transmission is carried out among the wearable electrical stimulation equipment, the motion measurement equipment and the control terminal in a wired or wireless mode; the wearable electrical stimulation device comprises an electrical stimulation meter body, a main control module and a constant current source output module. The electrical stimulation meter body comprises two output ends, and two electrical stimulation currents are respectively output through the two output ends and respectively act on two different parts; the main control module is used for integrally controlling the equipment, and comprises the following steps: receiving electrical stimulation parameters set by a control terminal, and determining an electrical stimulation mode of working of the wearable electrical stimulation equipment based on the set electrical stimulation parameters; and the constant current source output module is used for outputting constant current.

Provided are a suspension system and an active force control method, relating to the technical field of suspensions. The suspension system comprises a first constant flow source (401), a second constant flow source (402), a first damping valve (403), a second damping valve (404), a shock absorber (405), and a liquid container (406). The shock absorber (405) comprises a first liquid cavity (4051) and a second liquid cavity (4052) separated by a piston. The first constant flow source (401) and the second constant flow source (402) are used for outputting liquid at a constant flow rate. The liquid container (406) is used for storing or replenishing liquid flowing in the system. An outlet of the first constant flow source (401) is connected to a first end of the first damping valve (403) and the first liquid cavity (4051). A second end of the first damping valve (403) is connected to the liquid container (406), and the liquid container (406) is connected to an inlet of the first constant flow source (401). An outlet of the second constant flow source (402) is connected to a first end of the second damping valve (404) and the second liquid cavity (4052). A second end of the second damping valve (404) is connected to the liquid container (406), and the liquid container (406) is connected to an inlet of the second constant flow source (402). A suspension system having a high operating bandwidth without additionally significantly increasing unsprung mass can be implemented.

The invention discloses an electrolysis circuit with an exchange electrode, which belongs to the technical field of electrolysis water production and comprises a switching power supply, a constant current source module, an MCU (Microprogrammed Control Unit), a first electrode, a second electrode and an electrode switching module, the output end of the switching power supply is electrically connected with the input end of the constant current source module; the electrode switching module comprises a relay assembly, the reverse pole control output end of the MCU is electrically connected with the output end of the switching power supply through a coil of the relay assembly, and the positive pole output end and the negative pole output end of the constant current source module are electrically connected with a first electrode through a normally-closed contact and a normally-open contact of a first contact set respectively. The negative electrode output end and the positive electrode output end of the constant current source module are electrically connected with the second electrode through a normally-closed contact and a normally-open contact of the second contact set respectively. The electrolytic circuit with the exchange electrode solves the problem that scale is formed due to the fact that a single electrode uses direct current with the same polarity for a long time.

The invention discloses an ultrasonic flow measurement method and device, a chip and a storage medium, and the method comprises the steps: after an ultrasonic transducer emits an ultrasonic signal, charging an integrating circuit through a constant current source, and triggering the integrating circuit to discharge when an ultrasonic echo signal is captured; when the voltage value of the integrating circuit meets the discharge ending condition, the actual discharge duration of the integrating circuit is obtained, the actual discharge duration is input into the calibration model, and the actual propagation duration of the ultrasonic signal is obtained; and determining a flow measurement result corresponding to the ultrasonic signal according to the actual propagation duration of the ultrasonic signal. According to the technical scheme, the precision of the ultrasonic flow measurement result can be improved, and software expenditure is saved.

The utility model provides a composite headlamp installation support structure which comprises a composite headlamp support, a constant current source module is installed at the top of the composite headlamp support, a lamp holder body is installed on the outer surface of the composite headlamp support, steering lamps are arranged on the two sides of the bottom of the lamp holder body, and the steering lamps are connected with the constant current source module. Daytime running lamps are arranged on the two sides of the top of the lamp holder body, and a wire harness guide mechanism is arranged on the inner side of the composite headlamp support and the inner side of the lamp holder body and composed of a first wire harness clamping groove, a second wire harness clamping groove, a wiring end base and a buckle. According to the utility model, the front plastic part is connected by adopting a modularized buckle and screw structure, so that quick disassembly and assembly are realized, a steering lamp fixing groove and a constant current source mounting hole site are integrated, the occupied space is reduced through an integrated layout, a wire harness arrangement groove and a fixing clamp are arranged, and ordered arrangement of wire harnesses is realized through a separated design.

The utility model relates to a special testing device for a graphite contact high-voltage switch based on a 20A constant current source, which relates to the field of high-voltage switch testing and comprises a microprocessor module, a constant current source module, an output terminal module, a current output test line module, a voltage signal test input line module, a signal acquisition and conditioning module and a speed measurement sensor module. The constant current source module outputs 20A direct current to the contact of the graphite contact high-voltage switch to be tested; the voltage test line collects the voltage between the contacts in a built-in four-wire system mode, and the voltage is processed by the signal acquisition conditioning module and then sent to the microprocessor module. The speed measurement sensor collects the speed of the moving rod. And the microprocessor module determines the action time of the silver-plated main contact according to the voltage signal and performs compensation calculation to obtain the action time of the graphite arc contact as the closing or opening time. The utility model solves the problem that the traditional method cannot accurately measure the time parameter of the graphite contact high-voltage switch, and has the advantages of accurate measurement and strong interference resistance.

The present application relates to the technical field of optical coupling, and particularly relates to a constant current optical coupling isolation circuit based on a depletion mode MOSFET; through the cooperation of a reverse protection module, a self-bias constant current module and a response enhancement module, super-wide voltage input, low power consumption and high-speed dynamic response are realized in the circuit, to a certain extent, the inherent technical contradiction that the traditional resistance current limiting scheme cannot simultaneously consider reliable conduction and low power consumption under wide voltage, and the slow response of high CTR optical coupling is solved, the structure is extremely simple and the reliability is high, a self-bias constant current source based on a depletion mode MOSFET is adopted, only one resistor is needed to realize relatively accurate constant current output in a super-wide input range of 9.6V to 400V, replacing the current limiting resistor with huge power consumption under high voltage or the active constant current source with complex circuit in the traditional scheme, and the power consumption under high voltage application is reduced; the technical problem that the existing resistance current limiting scheme is limited in widening the input voltage range of the optical coupling is solved.

The application discloses a digital slice scanning fast focusing system adopting a liquid lens, wherein a liquid lens, a left focusing camera and a right focusing camera are installed in the optical path of a digital slice scanner; the liquid lens is installed between an objective lens and an image-taking camera; the left focusing camera and the right focusing camera are respectively installed on the left side and the right side of the image-taking camera to collect focal plane images; a computer processing device is connected with the left focusing camera and the right focusing camera respectively to obtain a focal plane signal according to the focal plane images collected by the left focusing camera or the right focusing camera; the computer processing device is connected with a constant current source driver to send the focal plane signal; and the constant current source driver is connected with the liquid lens to send different driving currents to control the liquid lens to focus. The application adds two focusing cameras (the left focusing camera and the right focusing camera) to expand the focusing FOV to quickly obtain the focal plane signal, and then controls the liquid lens to quickly adjust to the focal plane.

This invention discloses a comprehensive stress corrosion analysis device and monitoring method for marine structures. The device includes a stress loading device, a multi-channel microresistivity measurement device, and measurement components. The stress loading device can apply different elastic stresses to multiple sets of measurement components. Each set of measurement components includes a measuring element, a reference element, and a stress measuring element, and each set of measurement components has multiple monitoring areas. The multi-channel microresistivity measurement device includes a constant current source, multiple voltage measurement modules, and a relay module. The multi-channel microresistivity measurement device can sequentially acquire the resistance of different measuring elements and reference elements at different times, thereby obtaining the corrosion rate of the measuring elements under different elastic stresses. The comprehensive stress corrosion analysis device for marine structures disclosed in this invention can conveniently obtain the corrosion rate of measuring elements under different elastic stresses, thereby realizing the simulation of the corrosion rate of marine structures under different elastic stresses.

The invention relates to the technical field of charging, in particular to a concentrator super-capacitor and battery charging management circuit and a control method, and the method comprises the steps: a constant current source module is connected with a rechargeable battery module and a super-capacitor module, and a concentrator module charges the voltage of the rechargeable battery module and the super-capacitor module to a first voltage through the constant current source module; the MOS switch module is connected with the super capacitor module, and the concentrator module charges the voltage of the super capacitor module to a second voltage through the MOS switch module. In the first stage, the constant current source module is adopted to charge the rechargeable battery module and the super capacitor module at the same time, the voltages of the rechargeable battery module and the super capacitor module can be rapidly charged to the first voltage, the charging speed is remarkably increased, the problem of slow charging is solved, the overall charging efficiency of the concentrator is effectively improved, and the situation that an expensive constant current chip is used in the whole process is avoided; and on the premise of ensuring the charging performance, the number of used chips is greatly reduced, so that the hardware cost of the system is remarkably reduced.

This invention relates to the field of inverter technology, and particularly to a heterogeneous power device hybrid inverter and its space vector modulation method. The heterogeneous power device hybrid inverter provided in this invention includes a first constant current source, a second constant current source, a main power inverter module, a secondary power inverter module, and a capacitive reactance module. The first constant current source is connected to the main power inverter module to provide current to the main power inverter module. The main power inverter module includes multiple silicon-based insulated-gate bipolar transistors (SBMTs) as main switching transistors, and the main power inverter module is connected to the capacitive reactance module. The second constant current source is connected to the secondary power inverter module to provide current to the secondary power inverter module. The secondary power inverter module includes multiple silicon carbide-based metal-oxide-semiconductor field-effect transistors (MOSFETs) as secondary switching transistors, and the secondary power inverter module is connected to the capacitive reactance module. The heterogeneous power device hybrid inverter and its space vector modulation method provided by this invention can balance high inverter frequency and low switching losses.

This invention provides a liquid leak detection system, including a host computer and detection nodes that are communicatively and electrically connected to the host computer. The host computer sends instructions to the detection nodes and receives detection data transmitted by the detection nodes. Each detection node includes a control system and detection lines; the detection lines include five cables arranged in parallel: the first and second cables are power lines used to supply power to the detection nodes and transmit data; the third cable is a detection wire with a braided sheath; the fourth cable is a rubber conductor with resistance; and the fifth cable is an insulated conductor. The control system includes a controller, a constant current source unit, and a constant voltage source unit electrically connected to the controller. The constant current source unit and the constant voltage source unit can be switched arbitrarily to achieve different detection functions. The liquid leak detection system and method provided by this invention have a simple system structure, long detection distance, high accuracy, and can simultaneously detect multiple areas.

The present application relates to a kind of portable parallel thyristor quick pairing measuring instrument and method, belong to power electronic equipment maintenance tool and method technical field.The technical scheme of the present application is: reference thyristor is installed in reference thyristor measuring fixture (1), connects reference thyristor measurement circuit;Thyristor to be measured is installed in thyristor to be measured measuring fixture (2), connects thyristor to be measured measurement circuit;The output end of common constant-current source circuit (3) is simultaneously connected reference thyristor and thyristor to be measured;Comparison type indicating module (4) is connected between reference thyristor measurement circuit and thyristor to be measured measurement circuit, synchronous trigger circuit (5) is connected reference thyristor and thyristor to be measured, and reference thyristor and thyristor to be measured are triggered synchronously.The beneficial effects of the present application are: effectively guarantee the scientificity and accuracy of pairing screening, simple structure, low cost, convenient operation.

The present application discloses a battery system and a power supply system. The battery system comprises a processing circuit, a constant current source and a plurality of battery packs; each battery pack comprises at least one sampling resistor; the sampling resistors of all the battery packs are connected in series across the constant current source; voltages across the constant current source can directly reflect corresponding voltage protection values when different numbers of battery packs are connected in series; the processing circuit is connected across the constant current source, and uses the voltage across the constant current source as a voltage protection value to compare same with a voltage after the plurality of battery packs are connected in series. According to the battery system provided by the present application, the voltage protection value is directly represented by means of the voltage across the constant current source, and there is no need for an installation worker to open a switch box on site to adjust the voltage protection value by means of a DIP switch, thereby achieving convenience and rapidness, improving the safety, and reducing personnel costs.