WO2012000360A1 - Circuit de détection de tension d'accumulateurs - Google Patents

Circuit de détection de tension d'accumulateurs Download PDF

Info

Publication number
WO2012000360A1
WO2012000360A1 PCT/CN2011/074783 CN2011074783W WO2012000360A1 WO 2012000360 A1 WO2012000360 A1 WO 2012000360A1 CN 2011074783 W CN2011074783 W CN 2011074783W WO 2012000360 A1 WO2012000360 A1 WO 2012000360A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
voltage detecting
main control
control module
battery
Prior art date
Application number
PCT/CN2011/074783
Other languages
English (en)
Chinese (zh)
Inventor
刘飞
阮旭松
林少青
Original Assignee
惠州市亿能电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 惠州市亿能电子有限公司 filed Critical 惠州市亿能电子有限公司
Publication of WO2012000360A1 publication Critical patent/WO2012000360A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery

Definitions

  • the invention relates to the field of battery pack application, in particular to a battery voltage detecting circuit for accurately measuring voltages of individual cells in a battery pack.
  • the batteries need to be used in series, such as electric bicycles, energy storage systems, DC systems, and so on. Due to the inconsistency of the single cells, the battery pack may be in the charging phase, and a certain battery may be overcharged earlier than other batteries. In the discharging phase, a certain battery is over-discharged earlier than other batteries, so it is necessary The voltage of each battery in the battery pack is detected, and overcharge and overdischarge protection is performed.
  • the existing detection circuit mostly uses the differential circuit of the operational amplifier to "differentiate" the single-cell battery voltage to the output end of the amplifier, and then uses the single-chip microcomputer with the AD function to sample the output terminal voltage to obtain the battery voltage.
  • the battery connected in series is generally not more than six. The section is appropriate.
  • the problem to be solved by the present invention is to provide a battery voltage detecting circuit capable of accurately measuring the voltage of each unit cell in a large battery pack having a large number of series connected.
  • a multi-cell battery voltage detecting circuit comprising a main control module and a plurality of voltage detecting modules, wherein the voltage detecting module is an intelligent module provided with an MCU, the voltage The serial communication is used between the detection module and the main control module to transfer voltage data.
  • the battery voltage detecting module adopts an integrated operational amplifier chip to collect the voltage across the single battery through a differential method, and then outputs the voltage to the A/D sampling port of the single chip microcomputer.
  • the voltage detection module and the main control module communicate in an SPI serial manner.
  • the main control module is also a voltage detecting module.
  • the voltage detecting module has at least six voltage collecting channels, and simultaneously collects six single cell voltages.
  • the invention has the beneficial effects that the solution is based on the detection module, and the number of batteries to be tested is limited in the detection module, and the output precision of the amplifier is limited due to excessive voltage of the series battery.
  • the problem is; the plurality of basic modules are cascaded, and the collected voltage data is uploaded through the SPI bus to communicate with the main control module, and the scalability is strong, thereby realizing the measurement of the serial battery voltage with a large number.
  • 1 is a schematic diagram of a basic unit circuit of the battery voltage detecting circuit
  • FIG. 2 is a circuit schematic diagram of the cascaded embodiment of the battery voltage detecting circuit.
  • the multi-cell battery voltage detecting circuit of the invention uses the existing battery voltage detecting circuit as a detecting module and sets a main control module, and the main control module communicates with each detecting module through a serial manner.
  • multiple detection modules are cascaded with the main control module by using the SPI synchronous serial bus.
  • each detection module separately collects the voltage of each series battery in the battery pack, and then transmits the collected voltage data to the main control module through the SPI bus.
  • the main control module summarizes the battery voltage data of each section to better realize Overcharge, over discharge protection and other functions of the battery.
  • FIG. 1 is a schematic diagram of the circuit principle of the voltage detection module.
  • the battery voltage detecting module adopts an integrated operational amplifier chip to collect the voltage across the single battery through a differential method, and then outputs the voltage to the A/D sampling port of the single chip microcomputer. After the microcontroller calculates the battery voltage through the sampled value, it transmits it to the main control module through the SPI bus.
  • the main control module can also be a voltage detection module, and the main control module itself also detects the voltage of the single battery, and undertakes the task of summing up the voltage and control. This can reduce the cost of the circuit.
  • a voltage detection module detects the battery cell voltage.
  • the detection module where the MCU1 is located is used as the main control module, and the MCU2-MCUn is used as the slave voltage detection module.
  • Any data sent by the main control module can be received at the same time; only one slave detection module can send at any time, otherwise there is a conflict.
  • the main control module first sends the address number of the slave detection module.
  • the address number of the slave detection module can be written in the program in advance, or a set resistor can be added in the slave detection module to receive the slave detection of the address corresponding to itself.
  • the module will send data to the master module.
  • each slave voltage detecting module can receive a low level 0; when the main control module sends a high level 1, the transistor Q8 is turned off, the branch circuit 2 is not turned on, and the voltage of the receiving terminal of each slave voltage detecting module is VCC-0.65. Therefore, the slave voltage detection module receives one.
  • the main control module receiving principle taking the slave voltage detection module 2 as an example, when the MCU2 sends the data 1, the triodes Q6 and Q7 are turned on, and the MCUn always outputs 1 because it is not sent, so the branch one (the DI point of the main control module)
  • the connected branch is conductive, and the current is determined by R1 and R10.
  • R1 and R10 By adjusting the ratio of R1 to R10, the level required by the master module (high level) can be obtained; when MCU2 sends a low level 0.
  • the transistor Q6 is turned off, the branch is not turned on, the voltage on R10 is 0, and MCU2 receives 0.
  • branch 3 (the branch connected to the CLK point of the main control module) is the same as that of branch 2.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un circuit de détection de tension d'accumulateurs, qui mesure précisément la tension de chaque accumulateur dans une batterie d'accumulateurs. Le circuit de détection comprend un module principal de commande et une pluralité de modules de détection de tension. Les modules de détection de tension sont des modules intelligents qui possèdent des unités de commande de module (MCU). Les modules de détection de tension communiquent avec le module principal de commande sous la forme d'un mode série SPI afin de transmettre des données de tension. Les modules de détection de tension déterminent la tension sous forme différentielle aux deux bornes de chaque accumulateur à l'aide d'une puce d'un amplificateur opérationnel intégré, puis transmettent la tension à un port d'échantillonnage A/N d'une puce unique. Les modules de détection de tension sont des unités de base du circuit et le nombre des accumulateurs devant être détectés par les modules de détection est limité, si bien que l'on évite le problème de la précision de sortie de l'amplificateur dû au nombre excessif d'accumulateurs en série et à la tension excessive. Le fait de monter en cascade une pluralité de modules de base et de télécharger vers l'amont les données de tension obtenues par la communication entre un bus SPI et le module principal de commande assure une extensibilité élevée, ce qui permet de détecter la tension des accumulateurs en série en plus grand nombre.
PCT/CN2011/074783 2010-06-28 2011-05-27 Circuit de détection de tension d'accumulateurs WO2012000360A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010213204.5 2010-06-28
CN201010213204A CN101865979A (zh) 2010-06-28 2010-06-28 一种多节电池电压检测电路

Publications (1)

Publication Number Publication Date
WO2012000360A1 true WO2012000360A1 (fr) 2012-01-05

Family

ID=42957780

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/074783 WO2012000360A1 (fr) 2010-06-28 2011-05-27 Circuit de détection de tension d'accumulateurs

Country Status (2)

Country Link
CN (1) CN101865979A (fr)
WO (1) WO2012000360A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107554347A (zh) * 2017-09-30 2018-01-09 浙江合众新能源汽车有限公司 动力电池管理系统单体信息采样装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865979A (zh) * 2010-06-28 2010-10-20 惠州市亿能电子有限公司 一种多节电池电压检测电路
CN103018523A (zh) * 2012-10-11 2013-04-03 苏州爱知电机有限公司 智能变压站中蓄电池的电压监测系统
CN103383407B (zh) * 2013-06-28 2015-07-22 广东电网公司电力科学研究院 一种高共模抑制的电池组电压采样电路
FR3023006B1 (fr) * 2014-06-26 2016-06-24 Renault Sa Systeme de batteries d'accumulateurs a mesure de tension fiabilisee
CN106371020B (zh) * 2015-07-22 2019-06-07 比亚迪股份有限公司 电池管理系统和方法
CN106771525B (zh) * 2017-01-17 2019-07-26 华霆（合肥）动力技术有限公司 电压检测方法、装置及电压测试仪

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3293410B2 (ja) * 1995-06-09 2002-06-17 松下電器産業株式会社 組電池の監視装置
CN1564011A (zh) * 2004-03-17 2005-01-12 清华大学 一种车用燃料电池堆单片电压监测装置
JP2005117765A (ja) * 2003-10-07 2005-04-28 Nissan Motor Co Ltd 組電池の保護制御装置および組電池の保護制御方法
CN2844929Y (zh) * 2005-05-13 2006-12-06 比亚迪股份有限公司 智能电池包的电压测试装置
CN201041582Y (zh) * 2007-05-30 2008-03-26 广州蓝奇电子实业有限公司 一种电池检测设备
CN101865979A (zh) * 2010-06-28 2010-10-20 惠州市亿能电子有限公司 一种多节电池电压检测电路

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100460890C (zh) * 2007-06-04 2009-02-11 中南大学 多通道精密二次电池测试系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3293410B2 (ja) * 1995-06-09 2002-06-17 松下電器産業株式会社 組電池の監視装置
JP2005117765A (ja) * 2003-10-07 2005-04-28 Nissan Motor Co Ltd 組電池の保護制御装置および組電池の保護制御方法
CN1564011A (zh) * 2004-03-17 2005-01-12 清华大学 一种车用燃料电池堆单片电压监测装置
CN2844929Y (zh) * 2005-05-13 2006-12-06 比亚迪股份有限公司 智能电池包的电压测试装置
CN201041582Y (zh) * 2007-05-30 2008-03-26 广州蓝奇电子实业有限公司 一种电池检测设备
CN101865979A (zh) * 2010-06-28 2010-10-20 惠州市亿能电子有限公司 一种多节电池电压检测电路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107554347A (zh) * 2017-09-30 2018-01-09 浙江合众新能源汽车有限公司 动力电池管理系统单体信息采样装置

Also Published As

Publication number Publication date
CN101865979A (zh) 2010-10-20

Similar Documents

Publication Publication Date Title
WO2012000360A1 (fr) Circuit de détection de tension d'accumulateurs
CN102881952B (zh) 电池管理系统、电池管理芯片和方法
CN203688636U (zh) 用于检测串联电池组的电池单体电压的系统
KR101596487B1 (ko) 적은 수의 절연소자를 사용하여 2차 보호 신호 및 진단 신호를 전송할 수 있는 배터리 관리 시스템
CN210051820U (zh) 一种绝缘检测装置及电池管理系统
CN103091638A (zh) 一种蓄电池模拟系统
WO2012100540A1 (fr) Système de gestion de batterie au lithium-ion
CN207753126U (zh) 一种锂电池管理系统
CN204794291U (zh) 一种电池管理系统的动态均衡电路
CN210468025U (zh) 一种电池系统
CN107196388A (zh) 并联电池组电压均衡管理系统、并联电池组及其控制方法
CN203205895U (zh) 一种锂电池能量均衡控制系统
CN112398201A (zh) 检测电路及方法、通信装置及方法、电池均衡控制方法
CN207283215U (zh) 一种多电池采集均衡管理板
CN203241519U (zh) 锂离子动力电池单体电芯电压测量电路
CN110911765A (zh) 一种电池均衡策略验证平台
CN203606426U (zh) 一种电动汽车动力电池组单体电池电压采集系统
CN202975278U (zh) 一种蓄电池组电压检测装置
CN203135492U (zh) 电池模块均衡装置和电池包
CN205029355U (zh) 一种基于电压、电流和温度的电池管理装置
CN201886063U (zh) 电池管理系统及其控制器中单体电池电压采样电路
WO2023024034A1 (fr) Appareil de test par spectroscopie d'impédance électrochimique et système de gestion de batterie
CN108054450A (zh) 一种锂电池管理系统
CN102122834B (zh) 一种支持多串联的动力电池管理芯片
CN109494851B (zh) 一种智能电池系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11800105

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11800105

Country of ref document: EP

Kind code of ref document: A1