Multi-channel parallel connection constant-current battery charging and discharging circuit and chemical composition volume detection equipment
A charge-discharge circuit and multi-channel technology, applied in the direction of battery circuit devices, circuit devices, collectors, etc., can solve the problems of battery formation, capacity division and detection with different capacities
Inactive Publication Date: 2011-04-06
何大经
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Problems solved by technology
It aims to solve the shortcomings of the existing constant current charging and discharging module of the composition and capacity detection equipment that cannot perform effective and accurate formation, capacity separation and detection of batteries with different capacities
Method used
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[0014] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0015] The invention innovatively improves the method for connecting the current sampling circuit to the battery and the structure of the current sampling circuit, so as to achieve the purpose of multi-channel parallel connection for constant current charging and discharging of the battery.
[0016] Such as figure 1 As shown, the multi-channel parallel constant current charging and discharging circuit includes: a constant current charging and discharging control unit An, a current sampling Dn, and a battery BAT. Wherein the constant current charge and discharge control unit and the number of current samples are n, n=1˜∞. Its structural features are: the constant current charge and discharge control unit An bidirectional input and output...
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The invention discloses a multi-channel parallel connection constant-current battery charging and discharging circuit and chemical composition volume detection equipment. The circuit comprises at least one constant-current charging and discharging control unit and at least one current sampler, wherein a channel consists of each constant-current charging and discharging control unit and a current sampler; the bidirectional input and output end of each constant-current charging and discharging control unit is connected with the first end of a corresponding current sampler; the second ends of all current samplers are connected in parallel to the anode of a battery; the cathode of the battery is connected with a power ground; and the sampling end of each current sampler is connected with the feedback input end of a corresponding constant-current charging and discharging control unit. Due to the adoption of the circuit and the equipment, the defect of the waste of a large quantity of resources caused by the need of using different types of chemical composition volume detection equipment for batteries with different volumes can be solved.
Description
technical field [0001] The invention relates to the technical field of electronic detection, in particular to a battery multi-channel parallel constant current charge and discharge circuit and a chemical composition capacity detection device including the circuit. Background technique [0002] Lithium battery is a new type of chemical power source because of its high energy density, high working voltage and long life. Environmental protection features, widely used in various mobile devices. With the progress of manufacturing lithium battery technology, the lithium battery capacity (C=mAh) is getting larger and larger. The rated current value of the constant current charge and discharge of lithium battery formation, capacity separation and testing equipment is also getting higher and higher. Formation, capacity separation and testing equipment are important equipment in the lithium battery manufacturing process. [0003] In the existing technology, the formation, capacity ...
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IPC IPC(8): H02J7/00
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 何大经何聪
Owner 何大经