Voltage Equalization Devices and Systems
A voltage equalization and equalization technology, which is applied in circuit devices, charge equalization circuits, battery circuit devices, etc., can solve problems such as inefficient equalization process, low charge recovery rate, and time-consuming
Active Publication Date: 2020-10-16
BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD
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- Application Information
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Problems solved by technology
[0002] Nowadays, most balancers use active or passive methods to balance the battery voltage. Specifically, a resistor or energy storage component is connected to both ends of the battery with the highest voltage in the battery pack to discharge. Using the above methods, the charge recovery rate is relatively low. At the same time, the equalization process is very inefficient and time-consuming when only a few cells in the entire battery pack are at low voltage, or when there is bidirectional charge transfer between individual cells and a larger adjacent battery pack
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Embodiment 2
[0074] Figure 4 It is a schematic diagram of an application scenario of a voltage equalization system provided by an embodiment of the present invention.
[0075] The embodiment of the present invention also provides a voltage equalization system, which includes the above-mentioned voltage equalization device, and also includes a host computer connected to the voltage equalization device for sending calculation control instructions generated according to a preset model.
[0076] Here, the host computer is connected to the main controller through the CAN port, see figure 2 ;
[0077] Among them, such as Figure 4 As shown, the voltage equalization system also includes at least one slave controller in the voltage equalization device;
[0078] Figure 4 A typical interleaved transformer connection for a multi-cell battery pack in general is shown. This system has a balancing current capability of up to 10A. The bidirectional architecture minimizes balancing time and power ...
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The invention provides a voltage balancing device and a voltage balancing system, which relate to the technical field of batteries. The voltage balancing device comprises a master controller and a slave controller, the slave controller comprises a sampling circuit, a control unit and a transformer balancing circuit; the sampling circuit is used for acquiring a battery parameter of a battery pack;the master controller is used for performing logical operation for the battery parameter to generate a balancing command; and the control unit is used for controlling on and off of the transformer balancing circuit according to the balancing command, thereby enabling the batteries in the battery pack to perform charging or discharging. On the base of improving an electric charge recovery rate, a balancing speed and a balancing efficiency are improved to a great extent.
Description
technical field [0001] The invention relates to the field of battery technology, in particular to a voltage equalization device and system. Background technique [0002] Nowadays, most balancers use active or passive methods to balance the battery voltage. Specifically, a resistor or an energy storage component is connected to both ends of the battery with the highest voltage in the battery pack to discharge. Using the above methods, the charge recovery rate is relatively low. At the same time, the equalization process is very inefficient and time-consuming when only a few cells in the entire stack are at low voltage, or when there is bidirectional charge transfer between individual cells and a larger adjacent stack. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a voltage equalization device and system, which can greatly improve the equalization speed and efficiency on the basis of improving the charge recovery rate....
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IPC IPC(8): H02J7/00
CPCH02J7/0016
Inventor 刘贵生韩仁武吴庆国张晨
Owner BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD