Battery balance circuit, control method for battery balance and battery system
First Claim
1. A battery balance circuit, comprising:
- a plurality of balance modules configured to balance a plurality of batteries being coupled in series; and
a control module configured to provide a control signal to a logic input terminal of a first-processing balance module of said plurality of balance modules,wherein, among said plurality of balance modules, a logic output terminal of a pre-processing balance module is coupled to a logic input terminal of a post-processing balance module, a logic output terminal of a last-processing balance module is connected with said control module,when one of said plurality of balance modules detects an abnormal state on itself or on a corresponding battery of said plurality of batteries, it stops balancing and provides an abnormal signal representing the abnormal state and transfers said abnormal signal to the post-processing balance modules of said one of said plurality of balance modules through corresponding logic output terminals stage by stage, so that all of the post-processing balance modules of said one of said plurality of balance modules stop balancing, and then said abnormal signal is transferred from said logic output terminal of said last-processing balance module to said control module;
when said control module receives said abnormal signal, it determines that a state of a battery is abnormal and outputs said control signal representing an ending of balancing which is transferred from said first-processing balance module stage by stage, so that all the pre-processing balance modules of said one of said plurality of balance modules stop balancing.
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Accused Products
Abstract
Disclosed a battery balance circuit, a control method for battery balance and a battery system. The battery balance circuit is implemented on basis of a circuit structure having a plurality of cascaded balance modules, in which a judgement of abnormal states of batteries or balance modules is realized together with synchronizations of the detection of battery states and battery balance. When the judgement of abnormal states of batteries (including the abnormal states of battery voltages, battery temperatures and battery currents) is made, the balance modules stop balancing by transferring signals, meanwhile, when the balance modules restore from the abnormal state, they restore balance. The disclosure increases the judgement of abnormal states, and implements detection and alarm at abnormal states.
3 Citations
16 Claims
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1. A battery balance circuit, comprising:
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a plurality of balance modules configured to balance a plurality of batteries being coupled in series; and a control module configured to provide a control signal to a logic input terminal of a first-processing balance module of said plurality of balance modules, wherein, among said plurality of balance modules, a logic output terminal of a pre-processing balance module is coupled to a logic input terminal of a post-processing balance module, a logic output terminal of a last-processing balance module is connected with said control module, when one of said plurality of balance modules detects an abnormal state on itself or on a corresponding battery of said plurality of batteries, it stops balancing and provides an abnormal signal representing the abnormal state and transfers said abnormal signal to the post-processing balance modules of said one of said plurality of balance modules through corresponding logic output terminals stage by stage, so that all of the post-processing balance modules of said one of said plurality of balance modules stop balancing, and then said abnormal signal is transferred from said logic output terminal of said last-processing balance module to said control module; when said control module receives said abnormal signal, it determines that a state of a battery is abnormal and outputs said control signal representing an ending of balancing which is transferred from said first-processing balance module stage by stage, so that all the pre-processing balance modules of said one of said plurality of balance modules stop balancing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. A control method for battery balance, comprising:
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receiving an abnormal signal from a plurality of balance modules which is configured to balance a plurality of batteries connected in series; generating a control signal in according to the abnormal signal; transferring said control signal to said plurality of balance modules; and stopping balancing when said plurality of balance modules receives said control signal, wherein, among said plurality of balance modules, a logic output terminal of a pre-processing balance module is connected with a logic input terminal of a post-processing balance module, a logic output terminal of a last-processing balance module is connected with a control module, when one of said plurality of balance modules detects an abnormal state on itself or on a corresponding battery of said plurality of batteries, it stops balancing and provides an abnormal signal representing the abnormal state which is transferred to the post-processing balance modules of said one of said plurality of balance modules through corresponding logic output terminals stage by stage so that all of the post-processing balance modules of said one of said plurality of balance modules stop balancing, and then said abnormal signal is transferred from said logic output terminal of said last-processing balance module to said control module; when said control module receives said abnormal signal, it determines that a state of a battery is abnormal and outputs said control signal representing an ending on balancing, said control signal is transferred from said first-processing balance module stage by stage, so that all the pre-processing balance modules of said one of said plurality of balance modules stop balancing. - View Dependent Claims (13, 14, 15)
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Specification