WO2020073473A1 - 并联锂电池组单体电池电流高精度同步采集实验装置 - Google Patents
并联锂电池组单体电池电流高精度同步采集实验装置 Download PDFInfo
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- WO2020073473A1 WO2020073473A1 PCT/CN2018/120349 CN2018120349W WO2020073473A1 WO 2020073473 A1 WO2020073473 A1 WO 2020073473A1 CN 2018120349 W CN2018120349 W CN 2018120349W WO 2020073473 A1 WO2020073473 A1 WO 2020073473A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- the present invention relates to the technical field of lithium battery detection experiments, and in particular to a parallel high-precision synchronous current collection experimental device for lithium battery cells.
- the current battery management system can only obtain the total current of the battery pack, and cannot directly obtain the current of each single lithium battery.
- few corresponding detection devices are used for actual detection, and the current detection devices generally sample each sensor data in sequence, and the actual sampling time is not strictly the same time. Therefore, the development of a high-precision and synchronous acquisition experimental device for the parallel battery cell currents of parallel lithium battery packs is of great significance to the selection and configuration of parallel lithium battery packs, thereby improving the life of the electric vehicle power system.
- the object of the present invention is to provide a parallel lithium battery pack cell current high-precision synchronous acquisition experimental device, to solve the current detection device can not achieve high-precision synchronization of the current of each single lithium battery in the parallel lithium battery pack Technical issues of collection.
- the present invention provides a parallel lithium battery pack single cell current high-precision synchronous acquisition experiment device, including a parallel lithium battery pack, a current synchronization acquisition unit, a microprocessor control unit, and a host computer data analysis and storage unit; a parallel lithium battery Multiple lithium battery cells are connected in parallel in the group.
- the positive electrode of each single lithium battery is connected to the positive electrode of the charger and the positive electrode of the load through the positive electrode line.
- the negative electrode of each single lithium battery is connected to the negative electrode of the charger through the negative electrode line.
- the current synchronous acquisition unit includes a sensor module, a signal processing module and a synchronous conversion module;
- the sensor module includes multiple Hall current sensors corresponding to the number of single lithium batteries and the power supply for the Hall current sensor, Hall The current sensor is arranged on each positive line, the Hall current sensor is connected to the signal processing module, and the Hall current sensor collects the current signal of each single lithium battery and transmits it to the signal processing module;
- the signal processing module includes an operational amplifier circuit and a reference voltage circuit , The signal processing module is connected to synchronous conversion Block, the signal processing module performs addition and subtraction, amplification and filtering on the multiple current signals transmitted and outputs the signal to the synchronous conversion module;
- the synchronous conversion module is connected to the microprocessor control unit, and the synchronous conversion module multiples the signal processing module
- the output signal performs analog-to-digital conversion and outputs the signal to the microprocessor control unit;
- the microprocessor control unit is connected to the upper computer data analysis storage unit via the communication interface circuit.
- the synchronous conversion module includes a synchronous sampling analog-to-digital conversion chip and a voltage reference chip
- the signal processing module is connected to the synchronous sampling analog-to-digital conversion chip
- the synchronous sampling analog-to-digital conversion chip is provided with an external reference voltage input REFIN interface
- the voltage reference chip is provided with a reference voltage output Vout interface
- the external reference voltage input REFIN interface is connected to the reference voltage output Vout interface
- the voltage reference chip provides a reference voltage for the synchronous sampling analog-to-digital conversion chip.
- the synchronous sampling analog-to-digital conversion chip is also provided with an FSMC interface, a sampling frequency control input CONVST interface and an acquisition conversion completion flag BUSY interface;
- the microprocessor control unit includes an MCU, the MCU is provided with a FSMC interface, a PWM1 output interface of the Timerl timer, an external intermediate trigger interrupt EXTI input interface and a USART interface;
- the FSMC interface on the synchronous sampling analog-to-digital conversion chip is connected to the FSMC interface on the MCU, and the PWM1 output interface of the Timerl timer is connected
- Pick Sample frequency control input CONVST interface, acquisition and conversion complete flag bit BUSY interface is connected to the external trigger interrupt EXTI input interface, USART interface is connected to the communication interface circuit.
- the parallel lithium battery pack single cell current high-precision synchronous acquisition experiment device further includes a battery connector, the battery connector includes a terminal block, a buckle, a positive nickel sheet, a negative nickel sheet, a positive silver-plated wire and a negative electrode
- the silver-plated conductor, the positive circuit is a positive silver-plated conductor, the negative circuit is a negative silver-plated conductor, a plurality of snaps are provided on the terminal board, the snap-fit is connected to a single lithium battery, and one end of the positive nickel plate is connected to the wiring Plate, the other end of the positive nickel sheet is provided with a plurality of welding ports, the other end of the positive nickel sheet is welded to the positive terminal of the single lithium battery, one end of the negative nickel sheet is connected to the wiring board, and the other end of the negative nickel sheet is provided Multiple welding ports, the other end of the negative nickel plate is welded to the negative end of the single lithium battery, one end of the positive silver plated wire is connected to the terminal block, one end of the positive nickel plate
- one end of the terminal board is provided with a positive electrode mounting frame, the positive electrode mounting frame is provided with screws, one end of the positive nickel plate extends into the positive electrode mounting frame and overlaps the terminal plate, and the screw connects one end of the positive nickel plate It is fastened to the terminal board; one end of the terminal board is provided with a negative electrode assembly frame, and the negative electrode assembly frame is provided with screws. The end of the negative electrode nickel plate extends into the negative electrode assembly frame and overlaps the terminal board. One end is fastened to the wiring board.
- one end of the positive silver-plated wire is provided with a positive lead-out interface, and a screw is connected to the terminal board through the positive lead-out interface to connect one end of the positive silver-plated wire to the terminal board;
- one end of the negative silver-plated wire is provided with a negative lead-out interface , The screw is connected to the terminal board through the negative lead out interface so that one end of the negative silver-plated wire is connected to the terminal board.
- the other end of the positive electrode silver-plated wire connected to the positive electrode of each unit lithium battery is commonly connected with a wiring copper bar, and the wiring copper bar is connected to the positive electrode of the charger and the positive electrode of the load.
- the negative electrode silver plated wire connected to the negative electrode of each single lithium battery is provided with two adjustable internal resistance interfaces, and constantan with different lengths and radii can be connected between the two adjustable internal resistance interfaces wire.
- the adjustable silver-plated wire is provided with two adjustable connection internal resistance interface, two adjustable connection internal resistance interface can be connected Have different lengths Constantan wire with degree and radius.
- the parallel high-precision synchronous collection of single-cell current of the present invention has the following characteristics and advantages:
- the high-precision synchronous acquisition experimental device for parallel battery cell current of the present invention is convenient for experimental operation, and realizes high-accuracy synchronous acquisition of current of each single-cell lithium battery in the parallel lithium battery pack (strict Collected at the same moment in the sense);
- the parallel high-accuracy single-cell current collecting experiment device of the parallel lithium battery pack of the present invention realizes extremely low connection impedance to the single lithium battery, and ensures the originality of each single lithium battery in the parallel battery pack Some internal resistance characteristics improve the accuracy of current collection of single lithium battery;
- the parallel lithium battery cell single cell current high-precision synchronous collection experiment device of the present invention after collecting and monitoring the current of each single lithium battery, connects differently through the adjustable internal resistance interface and the adjustable connection internal resistance interface
- Constantan wire of length and radius can adjust the equivalent internal resistance of each single lithium battery and the connection resistance of the single lithium battery in parallel connection;
- the device for high-precision synchronous acquisition of single-cell currents of parallel lithium battery packs of the present invention is important for the study of current imbalance in single-cell lithium batteries caused by inconsistent parameters such as internal resistance of single-cell lithium batteries in parallel lithium-ion battery packs significance.
- FIG. 1 is a system structure diagram of an experimental device for high-precision synchronous acquisition of single-cell current of a parallel lithium battery pack according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a single lithium battery and a battery connector in an experimental device for parallel high-precision synchronous collection of battery cell currents of an embodiment of the invention
- FIG. 3 is a connection schematic diagram of a parallel lithium battery pack in an experimental device for high-precision and synchronous acquisition of single-cell current of a parallel lithium battery pack according to an embodiment of the present invention
- FIG. 4 is a schematic diagram of the connection between the MC U, the synchronous conversion module, and the data analysis and storage unit of the host computer in the high-precision synchronous acquisition current test device for parallel lithium battery cells according to an embodiment of the present invention
- FIG. 5 is an interface diagram of a host computer data analysis and storage unit in an experimental device for parallel high-precision synchronous acquisition of battery cell current in an embodiment of the present invention
- this embodiment provides a high-precision synchronous acquisition experimental device for parallel lithium battery pack cell current, including a parallel lithium battery pack, a current synchronization acquisition unit, a microprocessor control unit, and a host computer data Analysis of storage units, etc.
- a plurality of 18650 single-cell lithium batteries 1 are connected in parallel in the parallel lithium battery pack, and the positive electrode of each single-cell lithium battery 1 is connected to the positive electrode of the charger and the positive electrode of the load.
- the negative poles of the single lithium batteries 1 are connected to the negative pole of the charger and the negative pole of the load.
- Each unit lithium battery 1 is provided with a battery connector.
- the battery connector includes a terminal block 5, a buckle 9, a positive nickel plate 32, a negative nickel plate 31, a positive silver plated wire 72 and a negative silver plated wire 71.
- Two plastic buckles 9 are provided on the terminal board 5, and the buckles 9 are connected to the single lithium battery 1 in a snap-fit manner.
- One end of the positive electrode nickel sheet 32 is connected to the terminal board 5, specifically, one end of the terminal board 5 is provided with a positive electrode assembly frame 42, the positive electrode assembly frame 42 is provided with screws, and one end of the positive electrode nickel sheet 32 extends into the positive electrode assembly frame 42 Inside and overlapped on the terminal board 5, the screw fastens one end of the positive nickel sheet 32 on the terminal board 5.
- a plurality of welding ports 2 are provided on the other end of the positive electrode nickel sheet 32, and the other end of the positive electrode nickel sheet 32 is welded to the positive terminal of the single cell lithium battery 1.
- One end of the negative electrode nickel sheet 31 is connected to the terminal board 5.
- one end of the terminal board 5 is provided with a negative electrode assembly frame 41
- the negative electrode assembly frame 41 is provided with screws
- one end of the negative electrode nickel sheet 31 extends into the negative electrode assembly frame 41
- the screw fastens one end of the negative nickel sheet 31 on the terminal board 5.
- a plurality of welding ports 2 are opened on the other end of the negative electrode nickel sheet 31, and the other end of the negative electrode nickel sheet 31 is welded to the negative electrode end of the single cell lithium battery 1.
- One end of the positive silver-plated wire 72 is connected to the terminal block 5. Specifically, one end of the positive silver-plated wire 72 is provided with a positive lead-out port 62, and a screw is connected to the terminal board 5 through the positive lead-out port 62 to make the positive silver-plated lead 72 The end of the is connected to the terminal block 5. One end of the positive nickel sheet 32 is connected to one end of the positive silver-plated wire 72 via the internal circuit of the terminal block 5, and the other end of the positive silver-plated wire 72 is connected to the positive silver-plated wire 72.
- a positive terminal 82 is provided at the other end of the positive silver-plated wire 72 connected to the positive electrode of each single-cell lithium battery 1, and each positive silver-plated wire 72 is connected via a positive terminal 82 through a bolt to a wiring copper bar, and the wiring copper bar is connected The positive pole of the charger and the positive pole of the load.
- One end of the negative-electrode silver-plated wire 71 is connected to the terminal board 5. Specifically, one end of the negative-electrode silver-plated wire 71 is provided with a negative lead-out interface 61, and the screw is connected to the terminal board 5 through the negative-electrode lead-out interface 61 to make the negative-electrode silver-plated wire 71 The end of the is connected to the terminal block 5.
- One end of the negative electrode nickel plate 31 is connected to one end of the negative electrode silver-plated wire 71 through the internal circuit of the terminal board 5, the other end of the negative electrode silver-plated wire 71 is provided with a negative electrode terminal 81, and the negative electrode silver-plated wire 71 is connected to the negative electrode of the charger through the negative electrode terminal 81 , The negative pole of the load.
- the negative electrode silver plated wire 71 connected to the negative electrode of each single lithium battery 1 is provided with two adjustable internal resistance interfaces, and constantan wires of different lengths and radii can be connected between the two adjustable internal resistance interfaces , Equivalently adjust the equivalent internal resistance of each single lithium battery 1, or short-circuit between two adjustable internal resistance interfaces.
- Adjustable silver-plated wires are connected between adjacent negative-electrode silver-plated wires 71, two adjustable connection internal resistance interfaces are provided on the adjusted silver-plated wires, and there are different connections between the two adjustable connection internal resistance interfaces
- Constantan wires of length and radius can be equivalently adjusted for the connection resistance of the single lithium battery 1 connected in parallel.
- the parallel lithium battery pack single cell current high-accuracy synchronous acquisition experiment device of this embodiment realizes extremely low connection impedance to the single lithium battery, ensuring each cell in the parallel battery pack
- the original internal resistance characteristics of the lithium battery 1 improve the accuracy of current collection of the single lithium battery 1.
- the current synchronous acquisition unit includes a sensor module, a signal processing module, and a synchronous conversion module.
- the sensor module includes a plurality of Hall current sensors corresponding to the number of single lithium batteries 1 and a power supply for supplying the Hall current sensors.
- the Hall current sensor is disposed on each positive silver-plated wire 72, specifically Each positive silver-plated wire 72 passes through the respective Hall current sensor.
- the Hall current sensor is connected to the signal processing module, and the Hall current sensor collects the current signal of each single lithium battery 1 and transmits it to the signal processing module.
- the signal processing module includes an operational amplification circuit and a reference voltage circuit, the signal processing module is connected to a synchronous conversion module, the signal processing module performs addition and subtraction, amplification operation and filtering processing on the multiple current signals transmitted and outputs the signal to the synchronous conversion module .
- the signal processing module applies two different magnifications to the same Hall current sensor to achieve two sampling ranges and improve the sampling accuracy.
- the synchronous conversion module is connected to the microprocessor control unit, and the synchronous conversion module synchronously collects multiple output analog signals of the signal processing module and performs analog-to-digital conversion to output the signals to the microprocessor control unit.
- the synchronous conversion module includes a 16-bit AD7606 synchronous sampling analog-to-digital conversion chip and a voltage reference chip.
- the signal processing module is connected to the synchronous sampling analog-to-digital conversion chip. Synchronous sampling of AD7606
- the range of analog signals sampled by the analog-to-digital conversion chip is set to ⁇ 5V.
- the synchronous sampling analog-to-digital conversion chip is provided with an external reference voltage input REFIN interface, the voltage reference chip is provided with a reference voltage output Vout interface, the external reference voltage input REFIN interface is connected to the reference voltage output Vout interface, and the voltage reference chip is a synchronous sampling module
- the digital conversion chip provides a reference voltage to improve the analog-to-digital conversion accuracy of the synchronous sampling analog-to-digital conversion chip.
- a synchronous sampling analog-to-digital conversion chip is also provided with an FSMC (Flexible Static Memory Controller
- the microprocessor control unit includes MCU (micro control unit),
- FSMC Flexible Static Memory Controller
- PWM1 output interface of the Timerl timer an externally triggered interrupt EXTI input interface and a USART interface
- the FSMC interface on the synchronous sampling analog-to-digital conversion chip is connected to the MCU
- the FSMC interface is used to receive the data collected by the current synchronous acquisition unit.
- the PWM1 output interface of the Timerl timer is connected to the sampling frequency control input CONVST interface to set the sampling frequency for the experimental device.
- the acquisition conversion complete flag bit BUSY interface is connected to the external trigger interrupt EXTI input Interface, US ART interface is connected to the communication interface circuit to communicate with the host computer data analysis and storage unit.
- the microprocessor control unit is responsible for controlling the current synchronous collection unit and receiving the data collected by the current synchronous collection unit, and the microprocessor control unit sends the data collected by the current synchronous collection unit to the host computer
- the data storage and analysis is performed according to the analysis storage unit, and at the same time, the instruction of the data analysis storage unit of the host computer is received.
- the microprocessor control unit is connected to the upper computer data analysis storage unit via the communication interface circuit.
- the host computer data analysis and storage unit is a computer, which includes the host computer interface independently developed by C #, as shown in Figure 5.
- the sampling frequency of the experimental device can be set through the input window of the interface, and the collected data can be analyzed and stored.
- the data analysis and storage unit of the host computer uses the method of piecewise linearization to calibrate the real current data and the sampled data, so as to improve the accuracy of the device.
- the communication interface circuit is a serial USART to USB module composed of a CPB40G chip, which realizes data communication between the microprocessor control unit and the host computer data analysis and storage unit.
- the baud rate of the communication can be set independently.
- the user manually enters and sets the sampling frequency value through the host computer interface, and the computer sends it to the MCU of the microprocessor control unit through the communication interface circuit, and the MCU times a Timer 1 inside it.
- the PWM1 frequency of the device is set to the sampling frequency value set by the user, and the PWM1 duty cycle is adjusted to 50%; when the sampling frequency control input of the synchronous sampling analog-to-digital conversion chip AD7606 is high, the current synchronous acquisition unit Start collecting data and start analog-to-digital conversion, that is, the frequency of PWM1 is equal to the sampling frequency of the experimental device;
- the converted data is latched in the buffer area of the synchronous sampling analog-to-digital conversion chip AD7606 in the current synchronous acquisition unit, and the acquisition and conversion of the synchronous sampling analog-to-digital conversion chip AD7606 is completed.
- the BUSY interface of the flag bit changes from low level to high level.
- the external middle of the MCU connected to the BUSY interface of the acquisition conversion completion flag bit triggers the interrupt.
- the EXTI input interface also changes from low level to high level, and triggers the MCU interrupt. Service procedures
- the interrupt service program of the MCU uses its FSMC interface to obtain the data in the cached area of the synchronous sampling analog-to-digital conversion chip A D7606, and then the MCU sends the acquired data to the computer through the communication interface circuit.
- the host computer interface has a button to store data; when the MCU reads the data in the buffer area through the FS MC interface, the synchronous sampling analog-to-digital conversion chip AD7606 acquisition conversion completion flag bit BUSY interface changes from high to low Level.
- the parallel lithium battery pack cell current high-accuracy synchronous collection experiment device the experiment device
- the current of each single lithium battery 1 in the parallel lithium battery pack is collected with high precision and synchronization (in the strict sense at the same time), the internal resistance of the single lithium battery 1 in the parallel lithium battery pack, etc.
- the research on current imbalance in single lithium battery 1 caused by inconsistent parameters is of great significance.
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Abstract
一种并联锂电池组单体电池电流高精度同步采集实验装置,属于锂电池检测实验技术领域。装置包括并联锂电池组、电流同步采集单元、微处理器控制单元和上位机数据分析存储单元。有益效果在于对并联锂电池组中每个单体锂电池(1)的电流进行高精度同步采集;其电池连接器实现了对单体锂电池(1)极低的连接阻抗,确保了并联锂电池组中每个单体锂电池(1)原有的内阻特性,提高了对单体锂电池(1)电流采集的精度;对每个单体锂电池(1)的电流采集监测后,通过可调节内阻接口、可调节连接内阻接口连接不同长度及半径的康铜丝,以等效调整各单体锂电池(1)的等效内阻以及等效调整单体锂电池(1)在并联连接的连接电阻。
Description
说明书 发明名称:并联锂电池组单体电池电流高精度同步釆集实验装置 技术领域
[0001] 本发明涉及锂电池检测实验技术领域, 特别是涉及一种并联锂电池组单体电池 电流高精度同步采集实验装置。
背景技术
[0002] 随着能源危机和环境污染的加剧, 交通能源转型势在必行。 运用绿色环保二次 电池作为动力电源的电动汽车可有效减少路面排放, 受到国内外汽车研究机构 和厂商的高度重视, 市场前景广阔。 动力电池系统是电动汽车核心技术, 系统 的不完善严重制约着电动汽车的续航能力及安全性。 锂电池具有安全性高、 能 量密度大等优点, 被广泛应用于电动汽车领域。
[0003] 为满足电动汽车对容量的需求, 常使用多个单体锂电池以并联形式构成动力电 池组, 但由于生产工艺及环境等因素使单体锂电池不可避免的产生参数不一致 , 这必然导致并联电池组单体电流不均衡现象, 进而出现单体锂电池温度的不 一致, 势必影响并联电池组的使用寿命。 针对这一问题, 必须从根本上研究并 联电池组中单体锂电池参数的不一致对电流不一致的影响规律, 通过理论及数 据推导得出电池参数内阻、 容量以及 OCV等参数的不一致与电流不一致的关系 , 并最终指导并联电池的优化配组。
[0004] 当前电池管理系统只能获取电池组的总电流, 无法直接获得每个单体锂电池的 电流。 目前很少有相应的检测装置用于实际检测, 而且当前检测装置一般都是 按顺序对每个传感器数据进行采样, 实际的采样时间并不是严格意义上的同一 时刻。 因此, 开发一套并联锂电池组单体电池电流高精度同步采集实验装置, 对并联锂电池组的选型配组意义重大, 进而提高电动汽车动力系统的寿命。 发明概述
技术问题
问题的解决方案
技术解决方案
[0005] 本发明的目的在于提供一种并联锂电池组单体电池电流高精度同步采集实验装 置, 解决目前的检测装置不能对并联锂电池组中每个单体锂电池的电流实现高 精度同步采集的技术问题。
[0006] 本发明提供一种并联锂电池组单体电池电流高精度同步采集实验装置, 包括并 联锂电池组、 电流同步采集单元、 微处理器控制单元和上位机数据分析存储单 元; 并联锂电池组中并联有多个单体锂电池, 每个单体锂电池的正极均经正极 线路连接充电机的正极、 负载的正极, 每个单体锂电池的负极均经负极线路连 接充电机的负极、 负载的负极; 电流同步采集单元包括传感器模块、 信号处理 模块和同步转换模块; 传感器模块包括与单体锂电池数量对应的多个霍尔电流 传感器以及为霍尔电流传感器供电的电源, 霍尔电流传感器设置于每条正极线 路上, 霍尔电流传感器连接信号处理模块, 霍尔电流传感器采集每个单体锂电 池的电流信号传送至信号处理模块; 信号处理模块包括运算放大电路和参考电 压电路, 信号处理模块连接同步转换模块, 信号处理模块对传送来的多个电流 信号进行加减、 放大运算和滤波处理并输出信号至同步转换模块; 同步转换模 块连接微处理器控制单元, 同步转换模块对信号处理模块的多个输出信号进行 模数转换并输出信号至微处理器控制单元; 微处理器控制单元经通讯接口电路 连接上位机数据分析存储单元。
[0007] 进一步的, 所述同步转换模块包括同步采样模数转换芯片和电压基准芯片, 信 号处理模块连接同步采样模数转换芯片, 同步采样模数转换芯片上设有一个外 部基准电压输入 REFIN接口, 电压基准芯片上设有一个基准电压输出 Vout接口, 外部基准电压输入 REFIN接口连接基准电压输出 Vout接口, 电压基准芯片为同步 采样模数转换芯片提供基准电压。
[0008] 进一步的, 所述同步采样模数转换芯片型号为 AD7606
[0009] 进一步的, 同步采样模数转换芯片上还设有一个 FSMC接口、 一个采样频率控 制输入 CONVST接口和一个采集转换完成标志位 BUSY接口; 微处理器控制单元 包括 MCU, MCU上设有一个 FSMC接口、 一个 Timerl定时器的 PWM1输出接口、 一个外中触发中断 EXTI输入接口和一个 USART接口; 同步采样模数转换芯片上 的 FSMC接口连接 MCU上的 FSMC接口, Timerl定时器的 PWM1输出接口连接采
样频率控制输入 CONVST接口, 采集转换完成标志位 BUSY接口连接外中触发中 断 EXTI输入接口, USART接口连接通讯接口电路。
[0010] 进一步的, 并联锂电池组单体电池电流高精度同步采集实验装置还包括电池连 接器, 电池连接器包括接线板、 卡扣、 正极镍片、 负极镍片、 正极镀银导线和 负极镀银导线, 所述正极线路为正极镀银导线, 所述负极线路为负极镀银导线 , 接线板上设置若干个卡扣, 卡扣卡合连接单体锂电池, 正极镍片的一端连接 接线板, 正极镍片的另一端上开设有多个焊接口, 正极镍片的另一端焊接于单 体锂电池的正极端, 负极镍片的一端连接接线板, 负极镍片的另一端上开设有 多个焊接口, 负极镍片的另一端焊接于单体锂电池的负极端, 正极镀银导线的 一端连接接线板, 正极镍片的一端经接线板内部电路连接正极镀银导线的一端 , 正极镀银导线的另一端连接充电机的正极、 负载的正极, 负极镀银导线的一 端连接接线板, 负极镍片的一端经接线板内部电路连接负极镀银导线的一端, 负极镀银导线的另一端连接充电机的负极、 负载的负极。
[0011] 进一步的, 接线板的一端设置有正极装配架, 正极装配架上设置有螺钉, 正极 镍片的一端伸入正极装配架内且搭接于接线板上, 螺钉将正极镍片的一端紧固 于接线板上; 接线板的一端设置有负极装配架, 负极装配架上设置有螺钉, 负 极镍片的一端伸入负极装配架内且搭接于接线板上, 螺钉将负极镍片的一端紧 固于接线板上。
[0012] 进一步的, 正极镀银导线的一端设置有正极引出接口, 螺钉穿过正极引出接口 连接接线板以使正极镀银导线的一端连接接线板; 负极镀银导线的一端设置有 负极引出接口, 螺钉穿过负极引出接口连接接线板以使负极镀银导线的一端连 接接线板。
[0013] 进一步的, 每个单体锂电池正极连接的正极镀银导线的另一端共同连接有一个 接线铜排, 接线铜排连接充电机的正极、 负载的正极。
[0014] 进一步的, 每个单体锂电池负极连接的负极镀银导线上均设置有两个可调节内 阻接口, 两个可调节内阻接口之间可连接有不同长度及半径的康铜丝。
[0015] 进一步的, 相邻的负极镀银导线之间连接有调节镀银导线, 调节镀银导线上设 置有两个可调节连接内阻接口, 两个可调节连接内阻接口之间可连接有不同长
度及半径的康铜丝。
发明的有益效果
有益效果
[0016] 与现有技术相比, 本发明的并联锂电池组单体电池电流高精度同步采集实验装 置具有以下特点和优点:
[0017] 本发明的并联锂电池组单体电池电流高精度同步采集实验装置, 实验装置便于 实验操作, 实现了对并联锂电池组中每个单体锂电池的电流进行高精度同步采 集 (严格意义上的同一时刻采集) ;
[0018] 本发明的并联锂电池组单体电池电流高精度同步采集实验装置, 其电池连接器 实现了对单体锂电池极低的连接阻抗, 确保了并联电池组中每个单体锂电池原 有的内阻特性, 提高了对单体锂电池电流采集的精度;
[0019] 本发明的并联锂电池组单体电池电流高精度同步采集实验装置, 对每个单体锂 电池的电流的采集监测后, 通过可调节内阻接口、 可调节连接内阻接口连接不 同长度及半径的康铜丝, 以等效调整各单体锂电池的等效内阻以及等效调整单 体锂电池在并联连接的连接电阻;
[0020] 本发明的并联锂电池组单体电池电流高精度同步采集实验装置, 对并联锂电池 组中单体锂电池内阻等参数不一致带来的单体锂电池中电流不平衡的研究具有 重要意义。
[0021] 结合附图阅读本发明的具体实施方式后, 本发明的特点和优点将变得更加清楚 对附图的简要说明
附图说明
[0022] 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或 5见有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的 附图是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性 劳动的前提下, 还可以根据这些附图获得其他的附图。
[0023] 图 1为本发明实施例并联锂电池组单体电池电流高精度同步采集实验装置的系 统结构图;
[0024] 图 2为本发明实施例并联锂电池组单体电池电流高精度同步采集实验装置中单 体锂电池及电池连接器的结构示意图;
[0025] 图 3为本发明实施例并联锂电池组单体电池电流高精度同步采集实验装置中并 联锂电池组的连接示意图;
[0026] 图 4为本发明实施例并联锂电池组单体电池电流高精度同步采集实验装置中 MC U与同步转换模块、 上位机数据分析存储单元的连接示意图;
[0027] 图 5为本发明实施例并联锂电池组单体电池电流高精度同步采集实验装置中上 位机数据分析存储单元的界面图;
[0028] 其中,
[0029] 1、 单体锂电池, 2、 焊接口, 31、 负极镍片, 32、 正极镍片, 41、 负极装配架
, 42、 正极装配架, 5、 接线板, 61、 负极引出接口, 62、 正极引出接口, 71、 负极镀银导线, 72、 正极镀银导线, 81、 负极接线端, 82、 正极接线端, 9、 卡 扣。
发明实施例
本发明的实施方式
[0030] 如图 1所示, 本实施例提供一种并联锂电池组单体电池电流高精度同步采集实 验装置, 包括并联锂电池组、 电流同步采集单元、 微处理器控制单元和上位机 数据分析存储单元等。
[0031] 如图 2、 图 3所示, 并联锂电池组中并联有多个 18650型单体锂电池 1, 每个单体 锂电池 1的正极均连接充电机的正极、 负载的正极, 每个单体锂电池 1的负极均 连接充电机的负极、 负载的负极。
[0032] 每个单体锂电池 1上设置电池连接器。 电池连接器包括接线板 5、 卡扣 9、 正极 镍片 32、 负极镍片 31、 正极镀银导线 72和负极镀银导线 71。
[0033] 接线板 5上设置两个塑料材质的卡扣 9, 卡扣 9卡合连接单体锂电池 1。
[0034] 正极镍片 32的一端连接接线板 5, 具体的, 接线板 5的一端设置有正极装配架 42 , 正极装配架 42上设置有螺钉, 正极镍片 32的一端伸入正极装配架 42内且搭接 于接线板 5上, 螺钉将正极镍片 32的一端紧固于接线板 5上。 正极镍片 32的另一 端上开设有多个焊接口 2, 正极镍片 32的另一端焊接于单体锂电池 1的正极端。
[0035] 负极镍片 31的一端连接接线板 5, 具体的, 接线板 5的一端设置有负极装配架 41 , 负极装配架 41上设置有螺钉, 负极镍片 31的一端伸入负极装配架 41内且搭接 于接线板 5上, 螺钉将负极镍片 31的一端紧固于接线板 5上。 负极镍片 31的另一 端上开设有多个焊接口 2, 负极镍片 31的另一端焊接于单体锂电池 1的负极端。
[0036] 正极镀银导线 72的一端连接接线板 5, 具体的, 正极镀银导线 72的一端设置有 正极引出接口 62, 螺钉穿过正极引出接口 62连接接线板 5以使正极镀银导线 72的 一端连接接线板 5。 正极镍片 32的一端经接线板 5内部电路连接正极镀银导线 72 的一端, 正极镀银导线 72的另一端连接正极镀银导线 72。 每个单体锂电池 1正极 连接的正极镀银导线 72的另一端设置正极接线端 82, 每条正极镀银导线 72经正 极接线端 82通过螺栓共同连接有一个接线铜排, 接线铜排连接充电机的正极、 负载的正极。
[0037] 负极镀银导线 71的一端连接接线板 5, 具体的, 负极镀银导线 71的一端设置有 负极引出接口 61, 螺钉穿过负极引出接口 61连接接线板 5以使负极镀银导线 71的 一端连接接线板 5。 负极镍片 31的一端经接线板 5内部电路连接负极镀银导线 71 的一端, 负极镀银导线 71的另一端设置负极接线端 81, 负极镀银导线 71经负极 接线端 81连接充电机的负极、 负载的负极。
[0038] 每个单体锂电池 1负极连接的负极镀银导线 71上均设置有两个可调节内阻接口 , 两个可调节内阻接口之间可连接有不同长度及半径的康铜丝, 以等效调整各 单体锂电池 1的等效内阻, 或者两个可调节内阻接口之间短接。
[0039] 相邻的负极镀银导线 71之间连接有调节镀银导线, 调节镀银导线上设置有两个 可调节连接内阻接口, 两个可调节连接内阻接口之间可连接有不同长度及半径 的康铜丝, 以等效调整单体锂电池 1在并联连接的连接电阻。
[0040] 本实施例的并联锂电池组单体电池电流高精度同步采集实验装置, 其电池连接 器实现了对单体锂电池 1极低的连接阻抗, 确保了并联电池组中每个单体锂电池 1原有的内阻特性, 提高了对单体锂电池 1电流采集的精度。
[0041] 电流同步采集单元包括传感器模块、 信号处理模块和同步转换模块。
[0042] 传感器模块包括与单体锂电池 1数量对应的多个霍尔电流传感器以及为霍尔电 流传感器供电的电源。 霍尔电流传感器设置于每条正极镀银导线 72上, 具体为
每条正极镀银导线 72穿过各自的霍尔电流传感器。 霍尔电流传感器连接信号处 理模块, 霍尔电流传感器采集每个单体锂电池 1的电流信号并传送至信号处理模 块。
[0043] 信号处理模块包括运算放大电路和参考电压电路, 信号处理模块连接同步转换 模块, 信号处理模块对传送来的多个电流信号进行加减、 放大运算和滤波处理 并输出信号至同步转换模块。 其中, 信号处理模块对同一霍尔电流传感器分别 运用两个不同的放大倍数, 实现两个采样量程, 提高采样精度。
[0044] 如图 4所示, 同步转换模块连接微处理器控制单元, 同步转换模块对信号处理 模块的多个输出模拟信号进行同步采集并进行模数转换后输出信号至微处理器 控制单元。 同步转换模块包括 16位的型号为 AD7606的同步采样模数转换芯片和 电压基准芯片。 信号处理模块连接同步采样模数转换芯片。 AD7606的同步采样 模数转换芯片采样模拟信号的量程设定为 ±5V。 同步采样模数转换芯片上设有一 个外部基准电压输入 REFIN接口, 电压基准芯片上设有一个基准电压输出 Vout接 口, 外部基准电压输入 REFIN接口连接基准电压输出 Vout接口, 电压基准芯片为 同步采样模数转换芯片提供基准电压, 提高同步采样模数转换芯片的模数转换 精度。
[0045] 同步采样模数转换芯片上还设有一个 FSMC (Flexible Static Memory Controller
) 接口、 一个采样频率控制输入 CONVST接口和一个采集转换完成标志位 BUSY 接口; 微处理器控制单元包括 MCU (微控制单元) ,
MCU上设有一个 FSMC (Flexible Static Memory Controller) 接口、 一个 Timerl定 时器的 PWM1输出接口、 一个外中触发中断 EXTI输入接口和一个 USART接口; 同步采样模数转换芯片上的 FSMC接口连接 MCU上的 FSMC接口以接收电流同步 采集单元采集到的数据, Timerl定时器的 PWM1输出接口连接采样频率控制输入 CONVST接口以对本实验装置设定采样频率, 采集转换完成标志位 BUSY接口连 接外中触发中断 EXTI输入接口, US ART接口连接通讯接口电路以与上位机数据 分析存储单元的通讯。
[0046] 微处理器控制单元负责控制电流同步采集单元并接收电流同步采集单元采集到 的数据, 微处理器控制单元将电流同步采集单元采集到的数据发送给上位机数
据分析存储单元进行数据存储及分析, 同时接收上位机数据分析存储单元的指 令。
[0047] 微处理器控制单元经通讯接口电路连接上位机数据分析存储单元。 上位机数据 分析存储单元为计算机, 其包括运用 C#独立开发的上位机界面, 如图 5所示。 通 过界面的输入窗口可以设定实验装置的采样频率, 并对采集到的数据进行分析 存储。 其中, 上位机数据分析存储单元运用分段线性化的方法对真实电流数据 和采样数据进行标定, 以此提高该装置的精度。 通讯接口电路为由 CPB40G芯片 构成的串口 USART转 USB模块, 实现微处理器控制单元与上位机数据分析存储 单元的数据通信, 通讯的波特率可自主设定。
[0048] 本实施例的并联锂电池组单体电池电流高精度同步采集实验装置, 其控制同步 采集过程如下:
[0049] 首先, 如图 5所示,用户通过上位机界面手动输入并设定采样频率值, 计算机通 过通讯接口电路下发给微处理器控制单元的 MCU, MCU将其内部的一个 Timer 1 定时器的 PWM1的频率设定为用户设定的采样频率值, 且 PWM1占空比调整为 50 % ; 当同步采样模数转换芯片 AD7606的采样频率控制输入 CONVST接口出现高 电平时, 电流同步采集单元开始采集数据并开始进行模数转换, 即实现 PWM1的 频率等于实验装置采样频率;
[0050] 然后, 当电流同步采集单元模数转换结束后, 转换好的数据被锁存在电流同步 采集单元中同步采样模数转换芯片 AD7606的缓存区, 同时同步采样模数转换芯 片 AD7606采集转换完成标志位 BUSY接口由低电平转换为高电平, 此时与采集 转换完成标志位 BUSY接口连接的 MCU的外中触发中断 EXTI输入接口也由低电 平变为了高电平, 并触发 MCU中断服务程序;
[0051] 最后, MCU的中断服务程序中运用其 FSMC接口获取同步采样模数转换芯片 A D7606中已锁存好的缓存区内的数据, MCU再通过通讯接口电路把获取的数据 发送给计算机进行存储及分析, 上位机界面有存储数据的按钮; 当 MCU通过 FS MC接口对缓存区的数据读取结束后, 同步采样模数转换芯片 AD7606采集转换 完成标志位 BUSY接口由高电平转换为低电平。
[0052] 本实施例的并联锂电池组单体电池电流高精度同步采集实验装置, 实验装置便
于实验操作, 实现了对并联锂电池组中每个单体锂电池 1的电流进行高精度同步 采集 (严格意义上的同一时刻采集) , 对并联锂电池组中单体锂电池 1内阻等参 数不一致带来的单体锂电池 1中电流不平衡的研究具有重要意义。
[0053] 当然, 上述说明并非是对本发明的限制, 本发明也并不仅限于上述举例, 本技 术领域的技术人员在本发明的实质范围内所做出的变化、 改型、 添加或替换, 也应属于本发明的保护范围。
Claims
[权利要求 1] 一种并联锂电池组单体电池电流高精度同步采集实验装置, 其特征在 于: 包括并联锂电池组、 电流同步采集单元、 微处理器控制单元和上 位机数据分析存储单元; 并联锂电池组中并联有多个单体锂电池, 每 个单体锂电池的正极均经正极线路连接充电机的正极、 负载的正极, 每个单体锂电池的负极均经负极线路连接充电机的负极、 负载的负极 ; 电流同步采集单元包括传感器模块、 信号处理模块和同步转换模块 ; 传感器模块包括与单体锂电池数量对应的多个霍尔电流传感器以及 为霍尔电流传感器供电的电源, 霍尔电流传感器设置于每条正极线路 上, 霍尔电流传感器连接信号处理模块, 霍尔电流传感器采集每个单 体锂电池的电流信号传送至信号处理模块; 信号处理模块包括运算放 大电路和参考电压电路, 信号处理模块连接同步转换模块, 信号处理 模块对传送来的多个电流信号进行加减、 放大运算和滤波处理并输出 信号至同步转换模块; 同步转换模块连接微处理器控制单元, 同步转 换模块对信号处理模块的多个输出信号进行模数转换并输出信号至微 处理器控制单元; 微处理器控制单元经通讯接口电路连接上位机数据 分析存储单元。
[权利要求 2] 根据权利要求 1所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 所述同步转换模块包括同步采样模数转换芯片 和电压基准芯片, 信号处理模块连接同步采样模数转换芯片, 同步采 样模数转换芯片上设有一个外部基准电压输入 REFIN接口, 电压基准 芯片上设有一个基准电压输出 Vout接口, 外部基准电压输入 REFIN接 口连接基准电压输出 Vout接口, 电压基准芯片为同步采样模数转换芯 片提供基准电压。
[权利要求 3] 根据权利要求 2所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 所述同步采样模数转换芯片型号为 AD7606
[权利要求 4] 根据权利要求 2所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 同步采样模数转换芯片上还设有一个 FSMC接
口、 一个采样频率控制输入 CONVST接口和一个采集转换完成标志位 BUSY接口; 微处理器控制单元包括 MCU, MCU上设有一个 FSMC接 口、 一个 Timerl定时器的 PWM1输出接口、 一个外中触发中断 EXTI 输入接口和一个 USART接口; 同步采样模数转换芯片上的 FSMC接口 连接 MCU上的 FSMC接口, Timerl定时器的 PWM1输出接口连接采样 频率控制输入 CONVST接口, 采集转换完成标志位 BUSY接口连接外 中触发中断 EXTI输入接口, USART接口连接通讯接口电路。
[权利要求 5] 根据权利要求 1所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 并联锂电池组单体电池电流高精度同步采集实 验装置还包括电池连接器, 电池连接器包括接线板、 卡扣、 正极镍片 、 负极镍片、 正极镀银导线和负极镀银导线, 所述正极线路为正极镀 银导线, 所述负极线路为负极镀银导线, 接线板上设置若干个卡扣, 卡扣卡合连接单体锂电池, 正极镍片的一端连接接线板, 正极镍片的 另一端上开设有多个焊接口, 正极镍片的另一端焊接于单体锂电池的 正极端, 负极镍片的一端连接接线板, 负极镍片的另一端上开设有多 个焊接口, 负极镍片的另一端焊接于单体锂电池的负极端, 正极镀银 导线的一端连接接线板, 正极镍片的一端经接线板内部电路连接正极 镀银导线的一端, 正极镀银导线的另一端连接充电机的正极、 负载的 正极, 负极镀银导线的一端连接接线板, 负极镍片的一端经接线板内 部电路连接负极镀银导线的一端, 负极镀银导线的另一端连接充电机 的负极、 负载的负极。
[权利要求 6] 根据权利要求 5所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 接线板的一端设置有正极装配架, 正极装配架 上设置有螺钉, 正极镍片的一端伸入正极装配架内且搭接于接线板上 , 螺钉将正极镍片的一端紧固于接线板上; 接线板的一端设置有负极 装配架, 负极装配架上设置有螺钉, 负极镍片的一端伸入负极装配架 内且搭接于接线板上, 螺钉将负极镍片的一端紧固于接线板上。
[权利要求 7] 根据权利要求 5所述的并联锂电池组单体电池电流高精度同步采集实
验装置, 其特征在于: 正极镀银导线的一端设置有正极引出接口, 螺 钉穿过正极引出接口连接接线板以使正极镀银导线的一端连接接线板 ; 负极镀银导线的一端设置有负极引出接口, 螺钉穿过负极引出接口 连接接线板以使负极镀银导线的一端连接接线板。
[权利要求 8] 根据权利要求 5所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 每个单体锂电池正极连接的正极镀银导线的另 一端共同连接有一个接线铜排, 接线铜排连接充电机的正极、 负载的 正极。
[权利要求 9] 根据权利要求 5所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 每个单体锂电池负极连接的负极镀银导线上均 设置有两个可调节内阻接口, 两个可调节内阻接口之间可连接有不同 长度及半径的康铜丝。
[权利要求 10] 根据权利要求 9所述的并联锂电池组单体电池电流高精度同步采集实 验装置, 其特征在于: 相邻的负极镀银导线之间连接有调节镀银导线 , 调节镀银导线上设置有两个可调节连接内阻接口, 两个可调节连接 内阻接口之间可连接有不同长度及半径的康铜丝。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5167521B2 (ja) * | 2008-11-28 | 2013-03-21 | 旭化成エレクトロニクス株式会社 | 組電池及びその組電池を用いた電子機器 |
| CN105044607A (zh) * | 2015-07-01 | 2015-11-11 | 中国电力科学研究院 | 一种电池模组多通道同步检测装置 |
| CN105068014A (zh) * | 2015-08-28 | 2015-11-18 | 江苏大学 | 并联单体电池性能监测系统以及监测方法 |
| CN106169619A (zh) * | 2015-05-18 | 2016-11-30 | 福特全球技术公司 | 用于电动车辆的并联电池单元的电流平衡装置 |
| CN206134871U (zh) * | 2016-07-25 | 2017-04-26 | 上海鼎研智能科技有限公司 | 一种适用于检测圆柱形电芯电极电压的装置 |
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| CN204407420U (zh) * | 2014-12-17 | 2015-06-17 | 浙江天能能源科技有限公司 | 一种锂电池组 |
| CN204666701U (zh) * | 2015-04-09 | 2015-09-23 | 捷星新能源科技(苏州)有限公司 | 锂电池系统的电流电压采集装置 |
| CN105022846A (zh) * | 2015-07-06 | 2015-11-04 | 东北电力大学 | 多通道同步数据采集系统 |
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-
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106169619A (zh) * | 2015-05-18 | 2016-11-30 | 福特全球技术公司 | 用于电动车辆的并联电池单元的电流平衡装置 |
| CN105044607A (zh) * | 2015-07-01 | 2015-11-11 | 中国电力科学研究院 | 一种电池模组多通道同步检测装置 |
| CN105068014A (zh) * | 2015-08-28 | 2015-11-18 | 江苏大学 | 并联单体电池性能监测系统以及监测方法 |
| CN206134871U (zh) * | 2016-07-25 | 2017-04-26 | 上海鼎研智能科技有限公司 | 一种适用于检测圆柱形电芯电极电压的装置 |
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