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Voltage acquisition circuit of plurality of groups of independent battery packs

A technology of voltage acquisition and battery pack, applied in the direction of measuring current/voltage, measuring only voltage, measuring electricity, etc., can solve the problem of high cost, achieve the effect of low cost, reduce cost, and simplify complexity

Pending Publication Date: 2017-03-15
中凯智控科技(洛阳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a multi-group independent battery pack voltage acquisition circuit, which is used to solve the problem of high cost in the prior art for multi-group independent battery pack voltage acquisition

Method used

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  • Voltage acquisition circuit of plurality of groups of independent battery packs
  • Voltage acquisition circuit of plurality of groups of independent battery packs
  • Voltage acquisition circuit of plurality of groups of independent battery packs

Examples

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Embodiment 1

[0025] This embodiment provides a multi-group independent battery pack voltage acquisition circuit, and the structural principle diagram is as follows figure 1 As shown, battery pack 1, battery pack 2 and battery pack 3 are three battery packs to be tested, and the ADC module is a voltage acquisition device for collecting the voltage of each battery pack. The positive terminal set includes B1+, B2+ and B3+, which are used to connect the positive poles of battery pack 1, battery pack 2, and battery pack 3, respectively, and the negative terminal set includes B1-, B2-, and B3-, which are used to connect the batteries respectively. Negative terminal for pack 1, pack 2 and pack 3 negative. Positive terminals B1+, B2+ and B3+ are respectively connected to one end of the three low withstand voltage switches Sp1, Sp2 and Sp3, and the other ends of Sp1, Sp2 and Sp3 are short-circuited to form a positive short-circuit end; negative terminals B1-, B2- and B3 - Connect one end of the th...

Embodiment 2

[0032] This embodiment provides a multi-group independent battery pack voltage acquisition circuit, and the structural principle diagram is as follows image 3 As shown, battery pack 1, battery pack 2 and battery pack 3 are three battery packs to be tested, and the ADC module is a voltage acquisition device for collecting the voltage of each battery pack. The positive terminal set includes B1+, B2+ and B3+, which are used to connect the positive poles of battery pack 1, battery pack 2, and battery pack 3, respectively, and the negative terminal set includes B1-, B2-, and B3-, which are used to connect the batteries respectively. Negative terminal for pack 1, pack 2 and pack 3 negative. The positive terminals B1+, B2+ and B3+ are respectively connected to one end of the three low withstand voltage switches Sp1, Sp2 and Sp3, and the other ends of Sp1, Sp2 and Sp3 are short-circuited to form a positive short-circuit terminal. The negative terminals are directly short-circuited t...

Embodiment 3

[0039] This embodiment provides a multi-group independent battery pack voltage acquisition circuit, and the structural principle diagram is as follows Figure 5 As shown, battery pack 1, battery pack 2 and battery pack 3 are three battery packs to be tested, and the ADC module is a voltage acquisition device for collecting the voltage of each battery pack. The positive terminal set includes B1+, B2+ and B3+, which are used to connect the positive poles of battery pack 1, battery pack 2, and battery pack 3, respectively, and the negative terminal set includes B1-, B2-, and B3-, which are used to connect the batteries respectively. Negative terminal for pack 1, pack 2 and pack 3 negative. The positive terminals are directly short-circuited to form a positive short-circuit end; the negative terminals B1-, B2- and B3- are respectively connected to one end of the three low withstand voltage switches Sn1, Sn2 and Sn3, and the other ends of Sn1, Sn2 and Sn3 are short-circuited. Form...

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Abstract

The invention provides a voltage acquisition circuit of a plurality of groups of independent battery packs. The voltage acquisition circuit comprises a positive electrode terminal group, a negative electrode terminal group and a voltage acquisition device, wherein the positive electrode terminal group comprises at least two positive electrode terminals; the negative electrode terminal group comprises at least two negative electrode terminals; each positive electrode terminal is connected with one end of one corresponding positive electrode switch; the other end of each positive electrode switch is in short circuiting to form a positive short circuiting end; each negative electrode terminal is connected with one end of one corresponding negative electrode switch and the other end of each negative electrode switch is in short circuiting to form a negative short circuiting end; each positive electrode switch and each negative electrode switch are low-voltage-resisting switches; the voltage acquisition device is connected with the positive short circuiting end and the negative short circuiting end; and high-voltage-resisting switches are arranged on circuits where the voltage acquisition device is connected with the positive short circuiting end and / or the negative short circuiting end. According to the voltage acquisition circuit provided by the invention, only one voltage acquisition device for acquiring battery voltage is adopted, and only one or two high-voltage-resisting switches are adopted; and other switches can be the low-voltage-resisting switches, so that the cost is relatively low.

Description

technical field [0001] The invention belongs to the technical field of voltage acquisition, and in particular relates to a multi-group independent battery pack voltage acquisition circuit. Background technique [0002] Battery packs have been widely used in all aspects of social life, especially lithium battery packs, which represent the future development direction, have achieved large-scale application in new energy electric vehicles. In practical applications, multiple independent battery packs may be faced with voltage collection situation. [0003] At present, there are two ways to collect the voltage of multiple independent battery packs in the industry. One of them is to collect the voltage of each battery pack in multiple independent battery packs at the same time; To measure the number of battery packs and configure corresponding voltage acquisition devices, the hardware cost is relatively high, and the space occupied by the voltage acquisition devices is relativel...

Claims

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Application Information

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IPC IPC(8): G01R19/00G01R1/20G01R1/30
CPCG01R1/206G01R1/30G01R19/0084
Inventor 吕少锋田云芳张亮雷一鸣雷显玉
Owner 中凯智控科技(洛阳)有限公司