CN103134979A - Checking circuit for energy storage device terminal voltage - Google Patents
Checking circuit for energy storage device terminal voltage Download PDFInfo
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- CN103134979A CN103134979A CN2011103841611A CN201110384161A CN103134979A CN 103134979 A CN103134979 A CN 103134979A CN 2011103841611 A CN2011103841611 A CN 2011103841611A CN 201110384161 A CN201110384161 A CN 201110384161A CN 103134979 A CN103134979 A CN 103134979A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 27
- 238000007689 inspection Methods 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 description 12
- 239000000178 monomer Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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Abstract
本发明涉及一种用于储能器件端电压的巡检电路，包括：电阻分压网络，连接储能器件串联构成的储能电路的节点，通过电阻分压的方式将节点的电压等比例缩小；模拟开关，连接电阻分压网络的输出端，用于采集通道的切换；差分放大器，连接模拟开关，通过模拟开关输入两个节点的电压，将两个节点的电压差放大；A/D转换器，连接差分放大器的输出端，对差分放大器的输出信号进行AD采样，并进行模数转化；微控制器，连接A/D转换器的输出端，将A/D转换器的输出信号乘以一系数，获得对应节点的端电压。与现有技术相比，本发明具有电路结构简单、巡检速度快等优点。
The invention relates to a patrol inspection circuit for the terminal voltage of an energy storage device, comprising: a resistor voltage divider network connected to nodes of an energy storage circuit composed of energy storage devices connected in series, and the voltage of the nodes is reduced proportionally by means of resistor voltage divider ; The analog switch is connected to the output end of the resistor divider network, which is used to switch the acquisition channel; the differential amplifier is connected to the analog switch, and the voltage of the two nodes is input through the analog switch to amplify the voltage difference between the two nodes; A/D conversion The device is connected to the output terminal of the differential amplifier, carries out AD sampling on the output signal of the differential amplifier, and performs analog-to-digital conversion; the microcontroller is connected to the output terminal of the A/D converter, and multiplies the output signal of the A/D converter by A coefficient to obtain the terminal voltage of the corresponding node. Compared with the prior art, the invention has the advantages of simple circuit structure, fast inspection speed and the like.
Description
Technical field
The present invention relates to a kind of routing inspection circuit, especially relate to a kind of routing inspection circuit for the energy storage device terminal voltage.
Background technology
At present, the method for inspecting towards energy storage device monomer terminal voltage roughly can be divided into two large classes: the method for electric resistance partial pressure and the method that adopts switching device directly to measure.
For the method for electric resistance partial pressure, according to the difference of method of testing, mainly be divided into the method that common mode is measured and differential mode is measured.At present, most terminal voltage routing inspection circuits all adopt traditional common mode metering circuit, namely by divider resistance, each node voltage of energy storage device series connection is divided and be depressed in A/D converter acceptable voltage range, by measuring the voltage of each node, it is carried out subtraction process, thereby obtain the terminal voltage of each energy storage device monomer.Take the shortcoming of the method to be, this circuit is too high for the accuracy requirement of A/D converter, causes the cost of whole routing inspection circuit to increase, and can't realize supporting the use on a large scale with energy storage device, in addition, adopt this circuit to demarcate each node measurement passage, calibration process is loaded down with trivial details, makes production run complicated, the monomer terminal voltage result that this circuit obtains, be to obtain by two node voltage subtraction calculations, computation process is complicated, can't Reliable guarantee for the precision of net result.
The method that adopts switching device directly to measure: if adopt relay as switching device, no matter be traditional mechanical relay, or present popular solid-state relay, the switch motion time is all longer, affects monitoring time.The mechanical relay on-off times is limited, the life-span of the whole cruising inspection system of impact, and also the volume of relay is usually larger, is difficult to do the volume of cruising inspection system small and exquisitely.If adopt the analog switch scheme, because inside mostly is the MOS circuit structure, antijamming capability is very poor, and slightly large superpotential can be burnt it, and test circuit can't use reliably and with long-term.
Present method for inspecting generally all needs external power source independently-powered, but the test ground of the energy-storage units that consists of due to the series connection of each energy storage device is different, therefore need to install the insulating power supply module on each test cell, and along with the voltage of whole accumulator system is higher, isolation voltage to this power module requires just higher, this brings a lot of inconvenience for using accumulator system, and can't provide the special occasions of external power source at some, and these method for inspecting can not use at all.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of circuit of realizing the energy storage device terminal voltage is carried out high speed cruising inspection for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of routing inspection circuit for the energy storage device terminal voltage comprises:
Resistance pressure-dividing network connects the node of the tank circuit that the energy storage device series connection consists of, the mode by electric resistance partial pressure with the voltage scaled down of node to analog switch acceptable voltage range;
Analog switch, the output terminal of contact resistance potential-divider network is used for the switching of acquisition channel.
Differential amplifier, the connecting analog switch is inputted the voltage of two nodes by analog switch, the voltage difference of two nodes is amplified;
A/D converter, the output terminal of connection differential amplifier to the output signal sampling of differential amplifier, and carries out analog-to-digital conversion;
Microcontroller (MCU) connects the output terminal of A/D converter, and the output signal of A/D converter be multiply by a coefficient, obtains the terminal voltage of corresponding node.
Described analog switch, differential amplifier, A/D converter and microcontroller all are connected with tank circuit, provide power supply by tank circuit.
The multiple that dwindles by resistance pressure-dividing network is identical with the multiple that amplifies by differential amplifier, makes the calculated amount of microcontroller reduce, thereby shortens monitoring time.
Compared with prior art, the present invention can realize high speed cruising inspection to each terminal voltage of energy storage device, completes time of once patrolling and examining mainly by passage switching time, and analog to digital conversion time and microcontroller part computing times three form.Switch owing to adopting analog switch to carry out passage, therefore the passage switch speed is fast, coordinate an A/D converter, because resistance pressure-dividing network adopts the fixed partial pressure ratio, and differential amplifier can amplify same scale-up factor, therefore the calculated amount of microcontroller is very little, computing time is very short, can realize like this high speed cruising inspection of energy-storage units monomer terminal voltage.The benefit of using analog switch to replace relay is greatly increased the serviceable life of routing inspection circuit module, and volume to be smaller and more exquisite, because peripheral circuit is simple, therefore power consumption is lower, for its use tank circuit power supply provides condition.By adopting the tank circuit power supply, line is convenient, does not need additional power supply, is more suitable for not using under vehicle-mounted grade has the occasion of external power source.
Description of drawings
Fig. 1 is the structured flowchart of an embodiment of the present invention;
Fig. 2 is resistance pressure-dividing network, the analog switch of an embodiment of the present invention and the detailed construction schematic diagram of the amplifier section of checking the mark;
Fig. 3 is the power unit structural representation of an embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of routing inspection circuit for the energy storage device terminal voltage comprises resistance pressure-dividing network 2, analog switch 3, differential amplifier 4, A/D converter 5, microcontroller 6.Resistance pressure-dividing network 2 connects the node of the tank circuit 1 of energy storage device series connection formation, mode by electric resistance partial pressure with the voltage scaled down of node to analog switch 3 acceptable voltage ranges, the output terminal of analog switch 3 contact resistance potential-divider networks 2 and the input end of differential amplifier 4, be used for the switching of the node acquisition channel of tank circuit 1, its concrete structure as shown in Figure 2.
Follow-up A/D converter 5 and the microcontroller 6 of connecting successively of differential amplifier 4, microcontroller 6 are controlled the output signal sampling of 5 pairs of differential amplifiers 4 of A/D converter, and carry out analog-to-digital conversion.Microcontroller 6 multiply by with the output signal of A/D converter 5 terminal voltage that a coefficient namely obtains corresponding node.Microcontroller 6 can be sent to this terminal voltage the communication controler 7 that needs these data by suitable bus (CAN, LIN, 485 etc.), is used for other computing.Wherein, A/D converter 5 can be circuit or an individual chips that can realize digital-to-analog conversion, can adopt in addition the A/D translation function in microcontroller.
Adopt energy storage device 1 to provide power supply for routing inspection circuit in the present embodiment, its concrete structure as shown in Figure 3, the input end of transformer 8 connects the positive pole of tank circuit 1, output terminal is an end of connecting analog switch 3, differential amplifier 4, A/D converter 5 and microcontroller 6 respectively, and the other end that analog switch 3, differential amplifier 4, A/D converter 5 are connected with microcontroller all is connected with the negative pole of tank circuit 1.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103841611A CN103134979A (en) | 2011-11-28 | 2011-11-28 | Checking circuit for energy storage device terminal voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103841611A CN103134979A (en) | 2011-11-28 | 2011-11-28 | Checking circuit for energy storage device terminal voltage |
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| CN103134979A true CN103134979A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103841611A Pending CN103134979A (en) | 2011-11-28 | 2011-11-28 | Checking circuit for energy storage device terminal voltage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941076A (en) * | 2014-03-21 | 2014-07-23 | 宁波南车时代传感技术有限公司 | Middle direct voltage intelligent collection device for rail transit alternating-current driving system |
| CN108020714A (en) * | 2017-11-27 | 2018-05-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of fuel cell pile monolithic voltage monitor |
| CN109856449A (en) * | 2018-12-06 | 2019-06-07 | 安徽省金屹电源科技有限公司 | A kind of base stations and multiuser supply voltage monitoring device |
| CN110501559A (en) * | 2019-08-27 | 2019-11-26 | 杭州和利时自动化有限公司 | A kind of current collecting device |
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| CN101344544A (en) * | 2008-06-17 | 2009-01-14 | 同济大学 | Supercapacitor bank monomer voltage inspection module |
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| CN101545955A (en) * | 2008-03-27 | 2009-09-30 | 株式会社日立制作所 | Assembled battery total voltage detection circuit |
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-
2011
- 2011-11-28 CN CN2011103841611A patent/CN103134979A/en active Pending
Patent Citations (6)
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| CN101545955A (en) * | 2008-03-27 | 2009-09-30 | 株式会社日立制作所 | Assembled battery total voltage detection circuit |
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| CN101344544A (en) * | 2008-06-17 | 2009-01-14 | 同济大学 | Supercapacitor bank monomer voltage inspection module |
| CN201464550U (en) * | 2009-07-28 | 2010-05-12 | 武汉理工大学 | A channel-managed fuel cell stack monolithic voltage detection device |
| CN102012484A (en) * | 2009-09-07 | 2011-04-13 | 中达电通股份有限公司 | Circuit for regulating terminal voltage difference measurement range of storage battery |
| CN201773149U (en) * | 2010-09-02 | 2011-03-23 | 锦州辽工维森电子有限公司 | Real-time online detection device for series voltage source |
Non-Patent Citations (1)
| Title |
|---|
| 黄悦等: "超级电容单体电压巡检方法及改进", 《机电一体化》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941076A (en) * | 2014-03-21 | 2014-07-23 | 宁波南车时代传感技术有限公司 | Middle direct voltage intelligent collection device for rail transit alternating-current driving system |
| CN108020714A (en) * | 2017-11-27 | 2018-05-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of fuel cell pile monolithic voltage monitor |
| CN109856449A (en) * | 2018-12-06 | 2019-06-07 | 安徽省金屹电源科技有限公司 | A kind of base stations and multiuser supply voltage monitoring device |
| CN109856449B (en) * | 2018-12-06 | 2023-02-28 | 安徽金屹能源发展有限公司 | Base station multi-user power supply voltage monitoring device |
| CN110501559A (en) * | 2019-08-27 | 2019-11-26 | 杭州和利时自动化有限公司 | A kind of current collecting device |
| CN110501559B (en) * | 2019-08-27 | 2021-11-09 | 杭州和利时自动化有限公司 | Current collecting device |
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Application publication date: 20130605 |