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Battery voltage monitoring and self-calibration device

A battery voltage and correction device technology, applied in the direction of measuring current/voltage, measuring device, measuring electrical variables, etc., can solve the problems of increased manufacturing cost, high voltage demand of the calibrator, and unfeasible self-calibration, etc.

Active Publication Date: 2016-05-04
HYCON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they require external components and integrated circuits for voltage conversion, which will cause additional costs
At the same time, self-calibration is not feasible
Although the calibration problem can be solved by connecting each battery to a calibrator, if a battery pack contains multiple batteries, the number of calibrators required will be large, and the overall manufacturing cost will undoubtedly increase
In addition, if a single calibrator is used for multiple batteries, the overall voltage requirements of the calibrator will become very high, and the manufacturing cost will also increase significantly.

Method used

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  • Battery voltage monitoring and self-calibration device
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  • Battery voltage monitoring and self-calibration device

Examples

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Effect test

no. 1 example

[0036] Please refer to the image 3 , which shows a first embodiment. It shows the layout design of a battery voltage monitoring device 10 . The battery voltage monitoring device 10 is self-calibrating and applicable to several batteries connected in series. In this embodiment, the battery voltage monitoring device 10 is connected to a battery pack 20, and the battery pack 20 has such image 3 As shown, a first battery 201 , a second battery 202 and a third battery 203 are connected in series in sequence. All batteries mentioned above are rechargeable batteries. Preferably, in practice it is a lithium battery.

[0037]The battery voltage monitoring device 10 includes a first multiplexer 111, a first voltage measurement unit 112, a first compensation unit 113, a second multiplexer 121, a second voltage measurement unit 122, a The second compensation unit 123 and a calculation unit 150 .

[0038] Firstly, the first multiplexer 111 alternately receives the voltages of the f...

no. 2 example

[0052] The invention is not limited to measuring battery packs with only three cells. It can also be used in battery packs containing more than three cells. This embodiment will take a battery pack with four batteries as an example.

[0053] see Figure 4 . The second embodiment is disclosed here. Compared with the previous example, components with the same function will use the same component symbols, and repeated descriptions will not be repeated.

[0054] The difference between the first embodiment and the second embodiment is that the battery pack 20 further includes a fourth battery 204, and the battery voltage monitoring device 10 in the second embodiment further includes a third multiplexer 131, a third voltage quantity The measuring unit 132 and a third compensating unit 133.

[0055] The third multiplexer 131 is connected in parallel to the third battery 203 and the fourth battery 204, and alternately receives the voltage values ​​of the third battery 203 and the...

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Abstract

The invention reveals a battery voltage monitoring and self-correcting apparatus used for multiple batteries connected in series. The battery voltage monitoring and self-correcting apparatus comprises a first voltage-measuring unit, a second voltage-measuring unit, a first compensation unit, a second compensation unit, and a calculating unit. The battery voltage monitoring and self-correcting apparatus may be used for measuring the voltage of each battery in a battery set used for supplying electricity to an electric device, and may perform self correction in a measuring process.

Description

technical field [0001] The present invention relates to a battery voltage monitoring and self-calibration device, in particular, a battery voltage monitoring and self-calibration device for multiple batteries connected in series. The invention can be applied to measure the voltage of each battery in the battery pack. The battery pack can be used in battery-driven devices such as electric vehicles, electric tools, and the like. Background technique [0002] A rechargeable battery is a combination of one or more electrochemical cells. Because the electrochemical reaction is electrically reversible, it is called a secondary battery. Of all rechargeable batteries, lithium batteries are the most commonly used. It can be used in many electrical products, such as electric vehicles, electric motorcycles, electric tools and toys. Stable power supply, light and thin appearance and rechargeability are its application advantages. [0003] Lithium-ion battery power management require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
Inventor 赵伯寅王传圣陈宏维
Owner HYCON TECH