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Anti-reverse connection system and method applied to battery management unit equalization channels

A battery management unit, anti-reverse connection technology, applied in charge equalization circuit, arrangement of multiple synchronous batteries, electrical components, etc., can solve problems such as troublesome operation, and achieve the effect of low cost, low power consumption, and few components

Inactive Publication Date: 2017-05-10
SHENZHEN CLOU ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can realize bidirectional flow of current, once the connection is reversed, the fuse needs to be replaced, which is troublesome to operate

Method used

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  • Anti-reverse connection system and method applied to battery management unit equalization channels

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] Such as figure 1 As shown, the present invention utilizes the switching characteristic of the MOS tube to realize anti-reverse connection, utilizes the resistance voltage divider to open the MOS tube, and uses the regulator tube to realize the protection of the MOS tube. An anti-reverse connection system applied to the equalization channel of a battery management unit, including a first interface, a second interface and a field effect transistor Q1, the first interface includes a first positive pole V1+ and a first negative pole V1-, and the second interface includes a second The positive pole V2+ and the second negative pole V2-, the first positive pole V1+ is connected to the second positive pole V2+, the gate G of the field effect transistor Q1 is connected to the first positive pole V1+, and the...

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Abstract

The invention discloses an anti-reverse connection system and method applied to battery management unit equalization channels. The anti-reverse connection system comprises a first interface, a second interface and a field-effect tube, wherein the first interface comprises a first anode and a first cathode; the second interface comprises a second anode and a second cathode; the first anode is connected with the second anode; a grid electrode of the field-effect tube is connected with the first anode, a drain electrode of the field-effect tube is connected with the first cathode, and a source electrode of the field-effect tube is connected with the second cathode. The anti-reverse connection system is controlled by adopting the switching characteristic of the field-effect tube, so that an anti-reverse connection circuit is realized; next, the circuit loss of the part is reduced by using voltage control of the field-effect tube and the characteristic of small on resistance; and then, bidirectional flow of current is realized by using the characteristic of bidirectional conduction after the field-effect tube is connected, and the anti-reverse connection system is applicable to bidirectional equalization channels of battery packs. The anti-reverse connection system can be widely applied to various bidirectional current anti-reverse connection circuit systems.

Description

technical field [0001] The invention relates to the field of circuit control, in particular to an anti-reverse connection circuit system and method. Background technique [0002] In new energy vehicles and energy storage products, the battery management system is the most important part. In battery management, equalization is an essential means due to differences in battery consistency. This design proposes an anti-reverse connection circuit for balanced power supplies for active two-way equalization. It can detect whether the balance module power supply is reversed, and can protect against reversed connection. It has the characteristics of bidirectional anti-reverse connection, the current can flow in both directions, and it has the characteristics of small on-resistance and extremely low power consumption. [0003] With the improvement of human awareness of environmental protection, new energy technologies have been widely used. Among them, energy storage technology an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0026H02J7/0014
Inventor 张鑫
Owner SHENZHEN CLOU ELECTRONICS
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