CN203178367U - Internal resistance measuring circuit of battery capacity grading cabinet - Google Patents
Internal resistance measuring circuit of battery capacity grading cabinet Download PDFInfo
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- CN203178367U CN203178367U CN 201220740143 CN201220740143U CN203178367U CN 203178367 U CN203178367 U CN 203178367U CN 201220740143 CN201220740143 CN 201220740143 CN 201220740143 U CN201220740143 U CN 201220740143U CN 203178367 U CN203178367 U CN 203178367U
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- 238000005259 measurement Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The utility model discloses an internal resistance measuring circuit of a battery capacity grading cabinet. The internal resistance measuring circuit comprises a low-voltage input module which provides low voltage for the measuring circuit, a constant current circuit which keeps current magnitude of the measuring circuit unchanged, a discharge resistor which is used as a load of the measuring circuit, a measuring unit which contains an anode measuring end and a cathode measuring end and measures a plugged-in battery, a first sampling module which acquires voltages at two ends of the measuring unit, and a second sampling module used for acquiring current in the measuring circuit. A switch S1 is arranged between the second sampling module and the constant current circuit. The other end of the constant current circuit is provided with a single-pole double-throw switch S2 which maintains to be selectively connected with the low-voltage input module and the discharge resistor. In comparison with the prior art, the internal resistance measuring circuit has the following advantages: a traditional battery capacity grading cabinet can be provided with the above internal resistance measuring circuit so as to realize capacity grading and internal resistance detection by one step, shorten production cycle of batteries and save production costs of batteries.
Description
[technical field]
The utility model relates to the battery parameter determination techniques, specially refers to a kind of internal resistance measurement circuit of battery partial volume cabinet.
[background technology]
Battery parameter directly has influence on the discharge performance of battery, the safe handling of battery life and battery, and therefore, the various parameters that each cell is measured in various experiments all can be done by battery production manufacturer before battery production is dispatched from the factory, to guarantee the quality of product.
Because equipment difference, the measurement environment of various parameter measurements also have difference, this has just caused existing measurement all separately to be carried out, thereby has prolonged the battery production cycle, has increased the production cost of battery.People find in production practices, the needed environmental baseline of forming and capacity dividing technology of battery and the internal resistance of cell are measured basically identical, and the forming and capacity dividing operation of battery need be to battery discharging and recharging repeatedly, the accuracy that this helps the internal resistance of cell to measure, therefore, if can additionally increase some measuring equipments in the forming and capacity dividing cabinet, when finishing forming and capacity dividing, the internal resistance of measuring battery seems particularly important.
In view of above drawback, be necessary to carry a kind of internal resistance measurement circuit of battery partial volume cabinet to overcome above-mentioned defective in fact.
[utility model content]
The purpose of this utility model is to provide a kind of internal resistance measurement circuit of battery partial volume cabinet, and this test circuit cooperates traditional battery partial volume cabinet just can in time measure the internal resistance of cell.
To achieve these goals, the utility model provides a kind of internal resistance measurement circuit of battery partial volume cabinet, and it comprises:
The low pressure load module is used for providing low-voltage to metering circuit;
Constant-current circuit is used for keeping the size of current of metering circuit constant;
Discharge resistance is used for the load as metering circuit;
Measuring unit comprises anodal measuring junction and negative pole measuring junction, is used for inserting battery, measures;
First sampling module is for the both end voltage of collecting test unit;
Second sampling module is used for gathering the electric current of metering circuit;
Be provided with a switch S 1 between described second sampling module and the constant-current circuit, the other end of described constant-current circuit is provided with single-pole double-throw switch (SPDT) S2, and described single-pole double-throw switch (SPDT) S2 keeps optionally being connected with low pressure load module, discharge resistance.
A kind of improvement as the internal resistance measurement circuit of the utility model battery partial volume cabinet, when the battery charge that inserts to measuring unit, switch S 1 closure, single-pole double-throw switch (SPDT) S2 is connected to the low pressure load module, and described measuring unit, constant-current circuit and second sampling module constitute a closed-loop path.
A kind of improvement as the internal resistance measurement circuit of the utility model battery partial volume cabinet, when battery discharge that measuring unit inserts, switch S 1 closure, single-pole double-throw switch (SPDT) S2 is connected to discharge resistance, and described measuring unit, constant-current circuit, second sampling module and discharge resistance constitute a closed-loop path.
Compared with prior art, the advantage that the utlity model has is: traditional battery partial volume cabinet can be installed aforesaid internal resistance measurement circuit, thereby realize that partial volume and internal resistance detect the effect that settles at one go, shortened the battery production cycle, saved the battery production cost.
[description of drawings]
Fig. 1 is the internal resistance measurement circuit diagram of the utility model battery partial volume cabinet.
[embodiment]
The purpose of this utility model, technical scheme and useful technique effect are more clear to be understood in order to make, and below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that the embodiment of describing in this instructions only is in order to explain the utility model, is not in order to limit the utility model.
Please refer to shown in Figure 1, the internal resistance measurement circuit of the utility model battery partial volume cabinet, a kind of basis at existing constant current charge-discharge partial volume cabinet has been proposed, change and certain algorithm realization internal resistance of cell measurement by simple circuit, this partial volume cabinet that contains internal resistance of cell metering circuit, can realize that the internal resistance of cell is measured and partial volume is finished simultaneously, internal resistance of cell measuring accuracy height, characteristics such as battery production cycle weak point.
The internal resistance measurement circuit of the utility model battery partial volume cabinet, it comprises: (charging inlet 12V+ GND), is used for providing low-voltage to metering circuit the low pressure load module; Constant-current circuit U1 is used for keeping the size of current of metering circuit constant; Discharge resistance R1 is used for the load as metering circuit; Measuring unit comprises anodal measuring ends B+and negative pole B-measuring junction, is used for inserting battery, measures; First sampling module (voltage table V) is for the both end voltage of collecting test unit; Second sampling module (reometer A) is used for gathering the electric current of metering circuit; Be provided with a switch S 1 between described second sampling module and the constant-current circuit, the other end of described constant-current circuit is provided with single-pole double-throw switch (SPDT) S2, and described single-pole double-throw switch (SPDT) S2 keeps optionally being connected with low pressure load module, discharge resistance.
Internal resistance of cell measuring principle is: utilize these characteristics of battery charging and discharging current constant in the battery partial volume cabinet, increase the voltage detecting table on the basis of original circuit, the current detecting table, devices such as switch, utilize the battery inherent characteristic, (U is battery terminal voltage to U=E ± Ir, the E cell emf, r is the internal resistance of cell, and I is battery charge or discharge current) calculate the internal resistance of battery.
When battery in when charging, above-mentioned formula should be U=E+Ir, when battery discharge, above-mentioned formula should be U=E-Ir.In battery partial volume process, no matter battery is in charging or the process of discharge, can realize the measurement of internal resistance.Its concrete operation is: by the state of alteration switch S1, and the value of recording voltage Table V and reometer A, when disconnecting as if switch S 1, the reading of voltage table V is u1, the reading of reometer A is a1; If when switch S 1 was closed, the reading of voltage table V was u2, the reading of reometer A is a2, internal resistance of cell r=(v1-v2)/(a1-a2) at this moment, like this, the internal resistance of battery just can be in the process of battery partial volume rapidly, measure accurately.
Above-mentioned internal resistance measurement circuit can also form following two kinds of closed circuits at least: 1) when the battery charge that inserts to measuring unit, switch S 1 closure, single-pole double-throw switch (SPDT) S2 is connected to the low pressure load module, and described measuring unit, constant-current circuit and second sampling module constitute a closed-loop path; 2) when battery discharge that measuring unit inserts, switch S 1 closure, single-pole double-throw switch (SPDT) S2 is connected to discharge resistance, and described measuring unit, constant-current circuit, second sampling module and discharge resistance constitute a closed-loop path.
The utility model partial volume cabinet internal resistance of cell is measured, be not restricted to described in instructions and the embodiment, therefore for the personnel of familiar field, can easily realize additional advantage and modification, so under the situation of the spirit and scope that do not deviate from the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.
Claims (3)
1. the internal resistance measurement circuit of a battery partial volume cabinet is characterized in that, comprising:
The low pressure load module is used for providing low-voltage to metering circuit;
Constant-current circuit is used for keeping the size of current of metering circuit constant;
Discharge resistance is used for the load as metering circuit, makes things convenient for signal sampling;
Measuring unit comprises anodal measuring junction and negative pole measuring junction, is used for inserting battery, measures;
First sampling module is for the both end voltage of collecting test unit;
Second sampling module is used for gathering the electric current of metering circuit;
Be provided with a switch S 1 between described second sampling module and the constant-current circuit, the other end of described constant-current circuit is provided with single-pole double-throw switch (SPDT) S2, and described single-pole double-throw switch (SPDT) S2 keeps optionally being connected with low pressure load module, discharge resistance.
2. the internal resistance measurement circuit of battery partial volume cabinet according to claim 1, it is characterized in that: when the battery charge that inserts to measuring unit, switch S 1 closure, single-pole double-throw switch (SPDT) S2 is connected to the low pressure load module, and described measuring unit, constant-current circuit and second sampling module constitute a closed-loop path.
3. the internal resistance measurement circuit of battery partial volume cabinet according to claim 1, it is characterized in that: when battery discharge that measuring unit inserts, switch S 1 closure, single-pole double-throw switch (SPDT) S2 is connected to discharge resistance, and described measuring unit, constant-current circuit, second sampling module and employing resistance constitute a closed-loop path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740143 CN203178367U (en) | 2012-12-28 | 2012-12-28 | Internal resistance measuring circuit of battery capacity grading cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740143 CN203178367U (en) | 2012-12-28 | 2012-12-28 | Internal resistance measuring circuit of battery capacity grading cabinet |
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| CN203178367U true CN203178367U (en) | 2013-09-04 |
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| CN 201220740143 Expired - Fee Related CN203178367U (en) | 2012-12-28 | 2012-12-28 | Internal resistance measuring circuit of battery capacity grading cabinet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630845A (en) * | 2013-11-13 | 2014-03-12 | 凯迈(洛阳)电子有限公司 | Lithium ion battery internal resistance sorting device |
| CN104977539A (en) * | 2014-02-21 | 2015-10-14 | 联发科技股份有限公司 | Method and device capable of automatically measuring at least one parameter |
| CN108061856A (en) * | 2016-11-09 | 2018-05-22 | 广东大仓机器人科技有限公司 | The method for calculating battery capacity by measuring the internal resistance of cell in real time |
| US10248179B2 (en) | 2013-11-29 | 2019-04-02 | Mediatek Inc. | Method and controller for power throttling upon system on portable device, corresponding portable device, and corresponding computer program products |
| CN110031679A (en) * | 2019-03-28 | 2019-07-19 | 广东工业大学 | A kind of inner walkway technology based on forming and capacity dividing power supply |
-
2012
- 2012-12-28 CN CN 201220740143 patent/CN203178367U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630845A (en) * | 2013-11-13 | 2014-03-12 | 凯迈(洛阳)电子有限公司 | Lithium ion battery internal resistance sorting device |
| US10248179B2 (en) | 2013-11-29 | 2019-04-02 | Mediatek Inc. | Method and controller for power throttling upon system on portable device, corresponding portable device, and corresponding computer program products |
| CN104977539A (en) * | 2014-02-21 | 2015-10-14 | 联发科技股份有限公司 | Method and device capable of automatically measuring at least one parameter |
| CN105004928A (en) * | 2014-02-21 | 2015-10-28 | 联发科技股份有限公司 | Method capable of measuring at leat one resistance parameter and electronic apparatus |
| US9864015B2 (en) | 2014-02-21 | 2018-01-09 | Mediatek Inc. | Scheme applied into electronic device and capable of measuring resistance parameter(s) associated with battery cell |
| CN105004928B (en) * | 2014-02-21 | 2018-10-16 | 联发科技股份有限公司 | Measure the method and electronic device of an at least resistance parameter |
| US10114077B2 (en) | 2014-02-21 | 2018-10-30 | Mediatek Inc. | Electronic device, method, and computer readable medium having instructions capable of automatically measuring parameter(s) associated with battery cell |
| US10132873B2 (en) | 2014-02-21 | 2018-11-20 | Mediatek Inc. | Scheme applied into electronic device and capable of measuring resistance parameter(s) associated with battery cell |
| CN108061856A (en) * | 2016-11-09 | 2018-05-22 | 广东大仓机器人科技有限公司 | The method for calculating battery capacity by measuring the internal resistance of cell in real time |
| CN110031679A (en) * | 2019-03-28 | 2019-07-19 | 广东工业大学 | A kind of inner walkway technology based on forming and capacity dividing power supply |
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| C14 | Grant of patent or utility model | ||
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Denomination of utility model: Internal resistance measuring circuit of battery capacity grading cabinet Effective date of registration: 20141218 Granted publication date: 20130904 Pledgee: Export Import Bank of China Pledgor: Shenzhen Optimum Battery Co.,Ltd.|Zhao Bing Registration number: 2014990001097 |
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Date of cancellation: 20171025 Granted publication date: 20130904 Pledgee: Export Import Bank of China Pledgor: Shenzhen Optimum Battery Co.,Ltd.|Zhao Bing Registration number: 2014990001097 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 |