Capacitor and inductor module control circuit for battery cluster parallel circulating current
A technology of module control and capacitance inductance, which is applied in the direction of battery circuit devices, circuit devices, and electric energy storage systems, etc., can solve the problem that the energy storage battery cluster system cannot work normally at the same time, the BMS cannot be powered on normally, and the battery cluster cannot be used anytime and anywhere. Get the adjustment control and other issues to achieve the effect of flexible and direct power balance, shorten the equalization path, and reduce the equalization time
Pending Publication Date: 2022-07-08
SHANGHAI YUYUAN POWER TECH CO LTD
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Problems solved by technology
[0008] 3) The voltage difference between the terminals of each battery cluster is greater than the set value △V 2 , the BMS cannot be powered on normally, and manual intervention is required for maintenance to adjust the battery cluster terminal voltage
In the process of balancing the differences between battery clusters, the entire energy storage battery cluster system cannot work normally at the same time
[0012] Based on the above, it can be seen that the key to these problems is that the difference balance between battery clusters in the control scheme of the battery cluster parallel circulating current precharging circuit cannot be adjusted and controlled anytime and anywhere
Method used
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[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0035] like figure 1 As shown, according to the control circuit scheme of the present invention, it is composed of a circuit breaker, a one-way MOS tube switch, a shared capacitor and inductance equalization module, a control circuit, etc., and can realize the control function of the parallel circulating current of the battery cluster.
[0036] where E 1 ~E j , F 1 ~F j , X 1 ~X k , Y 1 ~Y k All are unidirectional MOS transistor switches, D 1 ~D j , M 1 ~M j , H 1 ~H k , N 1 ~N k is a circuit breaker in series with each battery cluster; C 1 ~C j , B 1 ~B k A battery cluster of a series of parallel battery clusters.
[0037] First, several battery boxes are connected in series to form a battery cluster, and then several battery clusters are connected in parallel to form the entire energy storage battery cluster system; in the s...
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The invention relates to a capacitor-inductor module control circuit for battery cluster parallel circulation. The control circuit comprises a first battery cluster series, a second battery cluster series, a common capacitance and inductance equalization module and a control circuit module, the first battery cluster series and the second battery cluster series are connected in parallel between the positive electrode and the negative electrode of the energy storage converter, and the common capacitance and inductance equalization module is connected with the first battery cluster series and the second battery cluster series. And under the control of the control circuit module, the battery clusters in the first battery cluster series and the second battery cluster series are subjected to electric quantity transfer equalization. According to the invention, direct difference equalization can be carried out on each battery cluster in the two parallel battery clusters, direct electric quantity equalization of the battery clusters between the parallel battery clusters is realized, pre-charging in advance is not needed, and the time of pre-charging in advance is saved.
Description
technical field [0001] The invention relates to the technical field of power balance, in particular to a capacitor-inductance module control circuit with parallel circulating current of battery clusters. Background technique [0002] Since the capacity of a single battery cluster is limited, it is necessary to combine multiple battery clusters in parallel to form an energy storage battery cluster system to work in order to meet the actual working capacity requirements. Due to the manufacturing process, the characteristics of these battery clusters are bound to differ. When the energy storage battery cluster system is repeatedly charged and discharged, due to the initial capacity difference, asymmetric attenuation characteristics, and uneven temperature distribution of each battery cluster, the battery clusters have inevitable differences in chemical and electrical properties, resulting in ineffective charging and discharging. balanced. [0003] The energy storage battery c...
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IPC IPC(8): H02J15/00H02J7/00H02H7/18
CPCH02J15/00H02J7/0014H02H7/18Y02E60/10
Inventor 尚德华张伟
Owner SHANGHAI YUYUAN POWER TECH CO LTD