Method for load overcurrent non-loss detection and charging overvoltage protection
A non-destructive testing, charging overvoltage technology, applied in the direction of measuring current/voltage, measuring electrical variables, current collectors, etc., can solve the problems of device damage, battery damage, etc., to achieve the effect of high reliability, low cost, and simple circuit
Inactive Publication Date: 2007-11-07
ZHEJIANG BOYANG COMPRESSOR
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[0002] Current chargers do not have load overcurrent non-destructive detection and charging overvoltage protection in this mode. When the load is overcurrent, the device will be damaged; when the charging is overvoltage, the battery will be damaged.
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[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0016] As shown in FIG. 1, the method for load overcurrent non-destructive detection and charging overvoltage protection includes the following steps:
[0017] 1.1) When the transistor T1 receives the driving pulse, the transistor T1 is turned on, and the pulsating direct current V+ stores energy for the coil L1, the coil L4, the diode D06, and the capacitor C06 work in the switching power supply forward conversion state, and the voltage of the capacitor C06 is equal to the power supply voltage Proportional relationship, that is, a voltage of 30V can be obtained; when the driving pulse stops, the energy of the coil L1 charges the battery through the coil L2 and the diode D01;
[0018] 1.2), the charging output is in the flyback conversion state, and the load characteristics are relatively soft. When the load increases, the output voltage will ...
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The invention relates to a method of load overflow non-destructive testing and charging overvoltage protection, when the transistor T1 obtains the actuation pulse, T1 onstate, the pulse direct current V+ stored energy for the L1, the coil L4, diode D06, the electric capacity C06 works and change the condition at the switching power positive pole, the C06 voltage is direct proportion relative with the mains voltage; When the actuation pulse stops, L1 energy through L2, D01 to charge the battery; when the load short-circuits or overflows, when the output voltage drops to 30V below, electrical energy on the electric capacity C06 through D07, R012, light pair G1, transistor T04, R08 causes transistor T04 onstate; after the LED of the light pair G1 achieved the certain electric current the triode part also onstate to lead T1 zero level to shut off the switching power supply; after the electric capacity C06 voltage drops to a definite value, the LED electric current of light pair G1 reduces to lead T1 onstate , the passive transformation start to work, after a instantaneous the electric capacity C6 voltage arrives to 30V, by this circulation. The beneficial effect of the invention is: electric circuit simple, reliability high, the cost is lower.
Description
technical field [0001] The invention relates to the field of charging nondestructive detection and protection, and mainly relates to a method for load overcurrent nondestructive detection and charging overvoltage protection. Background technique [0002] Current chargers do not have load overcurrent non-destructive detection and charging overvoltage protection in this mode. When the load is overcurrent, the device will be damaged; when the charging is overvoltage, the battery will be damaged. Contents of the invention [0003] The present invention aims to solve the above-mentioned existing shortcomings, and provides a method for load overcurrent non-destructive detection and charging overvoltage protection. [0004] The technical solution adopted by the present invention to solve its technical problems: the method for non-destructive detection of load overcurrent and charging overvoltage protection, the method includes the following steps: [0005] 1.1) When the transist...
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IPC IPC(8): G01R19/165H02J7/00
Inventor 鲍旭东
Owner ZHEJIANG BOYANG COMPRESSOR