CN202093150U - Battery pack detection system and battery power supply system - Google Patents
Battery pack detection system and battery power supply system Download PDFInfo
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- CN202093150U CN202093150U CN2011201231611U CN201120123161U CN202093150U CN 202093150 U CN202093150 U CN 202093150U CN 2011201231611 U CN2011201231611 U CN 2011201231611U CN 201120123161 U CN201120123161 U CN 201120123161U CN 202093150 U CN202093150 U CN 202093150U
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Abstract
The utility model provides a battery pack detection system. A battery pack comprises a plurality of battery units which are connected in series by connection wires. The detection system comprises a plurality of first voltage detectors corresponding to the battery units, each first voltage detector is connected in parallel with the corresponding battery units respectively by two detection wires, the detection wires are directly connected with the poles of the corresponding battery units, so that the first voltage detector directly detects a first voltage between the two poles of the corresponding battery units. The utility model further provides a battery power supply system. Through the mode, the battery pack detection system and the battery power supply system directly detect voltage between the two poles of the battery units, thus further being capable of precisely detecting the voltage of each battery unit and judging the connection state of the battery pack.
Description
Technical field
The utility model relates to the battery management technical field, particularly relates to a kind of detection system and battery power supply system of electric battery.
Background technology
In the use of battery, battery is used demand to provide higher output voltage and bigger power capacity to satisfy load driving by series connection usually.Yet, no matter be lithium rechargeable batteries, plumbic acid rechargeable battery or nickel-hydrogen chargeable cell, because the restriction of its process conditions causes existing between the battery unit certain difference.Therefore, need voltage check device to detect the voltage of battery unit in real time.
See also Fig. 1, Fig. 1 is the electric battery detection system of prior art.As shown in Figure 1, the detection system 10 of electric battery comprises a plurality of voltage check devices (not shown).Wherein, electric battery comprises battery unit BT1, BT2, BT3 and BT4.Wherein, battery unit BT1, BT2, BT3 and BT4 are connected in series by connecting line 101,102 and 103.Voltage check device detects both end voltage Vb1, Vb2, Vb3 and the Vb4 of battery unit BT1, BT2, BT3 and BT4 by the detection line 104,105,106,107 and 108 that is connected with above-mentioned connecting line 101,102 and 103.When this electric battery external load, voltage Vb1, Vb2, Vb3 and the Vb4 that detection draws not only comprises the pressure drop between the pole of battery unit BT1, BT2, BT3 and BT4, also comprise pressure drop on the connecting line 101,102 and 103 between battery unit BT1, BT2, BT3 and the BT4 and connecting line 101,102 and 103 and the pole surface of contact between pressure drop, the result who makes this voltage check device detect has bigger error.When connecting line 101,102 and 103 and during the pole loose contact, voltage check device can't detect the voltage of battery unit BT1, BT2, BT3 and BT4.In addition, the both end voltage Vb of electric battery is directly obtained by voltage Vb1, Vb2, Vb3 and Vb4 summation.Since exist the pressure drop of connecting line 101,102 and 103 and connecting line 101,102 and 103 and the pole surface of contact between pressure drop, cause the both end voltage of electric battery to have bigger error.Further, the detection system of existing electric battery can't be judged the connection status of electric battery, when connecting line 101,102 and 103 during with the pole loose contact, can be because the internal resistance increase of electric battery, and produce extra energy consumption.
Therefore, a kind of detection system of electric battery need be provided, the problem of the voltage of each battery unit can't be accurately detected with voltage check device in the solution prior art.
The utility model content
The technical matters that the utility model mainly solves provides a kind of detection system of electric battery, accurately to detect the voltage of each battery unit.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the detection system that a kind of electric battery is provided, electric battery comprises a plurality of battery units that are connected in series by connecting line, detection system comprises a plurality of first voltage check devices corresponding with battery unit, each first voltage check device is respectively by two detection lines and corresponding battery unit parallel connection, wherein detection line directly connects the pole of corresponding battery unit, so that first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding battery unit.
According to the utility model one preferred embodiment, detection system further comprises second voltage check device, the detection line of the two ends pole of second voltage check device by directly connecting electric battery is in parallel with electric battery, with second voltage between the two ends pole of detection electric battery.
According to the utility model one preferred embodiment, detection system further comprises current sensing means, and current sensing means and electric battery are connected in series, to detect the loop current of electric battery.
According to the utility model one preferred embodiment, detection system further comprises processor, and processor is judged the connection status of electric battery according to first voltage, second voltage and loop current.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: a kind of battery power supply system is provided, battery power supply system comprises electric battery and detection system, electric battery comprises a plurality of battery units that are connected in series by connecting line, detection system comprises a plurality of first voltage check devices corresponding with battery unit, each described first voltage check device is respectively by two detection lines and corresponding battery unit parallel connection, wherein detection line directly connects the pole of corresponding battery unit, so that first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding battery unit.
According to the utility model one preferred embodiment, detection system further comprises second voltage check device, the detection line of the two ends pole of second voltage check device by directly connecting electric battery is in parallel with electric battery, with second voltage between the two ends pole of detection electric battery.
According to the utility model one preferred embodiment, detection system further comprises current sensing means, and current sensing means and electric battery are connected in series, to detect the loop current of electric battery.
According to the utility model one preferred embodiment, detection system further comprises processor, and processor is judged the connection status of electric battery according to first voltage, second voltage and loop current.
The beneficial effects of the utility model are: the situation that is different from prior art, the detection system of electric battery of the present utility model and battery power supply system directly detect the voltage of the two poles of the earth intercolumniation of battery unit by detection line, and then can accurately detect the voltage of each battery unit, and can judge the connection status of electric battery.
Description of drawings
Fig. 1 is the synoptic diagram of the detection system of electric battery in the prior art; And
Fig. 2 is the synoptic diagram according to the detection system of the electric battery of the utility model first embodiment.
Embodiment
See also Fig. 2, Fig. 2 is according to the synoptic diagram of the detection system of the electric battery of the utility model first embodiment.As shown in Figure 2, electric battery comprises battery unit BT1, BT2, BT3 and the BT4 that is connected in series by connecting line 213,223 and 233, and the detection system 20 of electric battery of the present utility model comprises: first voltage check device 21,22,23 and 24, second voltage check device 25, processor 26, current sensing means 27.Wherein, first voltage check device 21,22,23 and 24 is corresponding with battery unit BT1, BT2, BT3 and BT4.
In the present embodiment, first voltage check device 21 is by two detection lines 211 and 212 in parallel with battery unit BT1, detection line 211,212 directly connects the pole of battery unit BT1, makes the voltage check device 21 of winning directly detect the first voltage Vb1 of the two poles of the earth intercolumniation of battery unit BT1.First voltage check device 22 is by two detection lines 221 and 222 in parallel with battery unit BT2, detection line 221 and 222 directly is connected two poles of battery unit BT2, makes the voltage check device 22 of winning directly detect the first voltage Vb2 of the two poles of the earth intercolumniation of battery unit BT2.First voltage check device 23 is by two detection lines 231 and 232 in parallel with battery unit BT3, detection line 231 and 232 directly is connected two poles of battery unit BT3, makes the voltage check device 23 of winning directly detect the first voltage Vb3 of the two poles of the earth intercolumniation of battery unit BT1.First voltage check device 24 is by two detection lines 241 and 242 in parallel with battery unit BT4, detection line 241 and 242 directly is connected two poles of battery unit BT4, makes the voltage check device 24 of winning directly detect the first voltage Vb4 of the two poles of the earth intercolumniation of battery unit BT4.
The detection line 251 of the two ends pole of second voltage check device 25 by directly connecting electric battery and 252 in parallel with electric battery is with the second voltage V between the two ends pole of detection electric battery.Wherein, the two ends pole of electric battery is the negative terminal of battery unit BT1 and the positive terminal of battery unit BT4.
Current sensing means 27 is connected in series with electric battery, is used to detect the loop current I of electric battery.
Processor 26 is connected with second voltage check device 25, current sensing means 27 and first voltage check device 21,22,23 and 24 respectively, with loop current I and the first voltage Vb1, Vb2, Vb3 and the Vb4 that receives the second voltage V, electric battery.Processor 26 by with the difference of the second voltage V and the summed result of the first voltage Vb1, Vb2, Vb3 and Vb4 divided by the loop current I of electric battery draw connecting line 213,223 and 233 and connecting line 213,223 and 233 with the surface of contact of corresponding pole between the resistance value summation.Processor 26 is according to the connection status of this resistance value summation and then judgement electric battery.Specifically, when this resistance value summation during, judge that there is bad connection in electric battery greater than certain threshold value.
When concrete the use, each first voltage check device 21,22,23 and 24 respectively by detection line 211,212,221,222,231,232,241 and 242 with corresponding battery unit BT1, BT2, BT3 and BT4 parallel connection, detection line 211,212,221,222,231,232,241 and 242 directly connect corresponding battery unit BT1, BT2, the pole of BT3 and BT4, make the detection system 20 of this electric battery avoid detecting connecting line 213,223 and 233 and connecting line 213,223 and 233 with the surface of contact of corresponding pole between pressure drop, and then improve the accuracy of detection of the detection system 20 of this electric battery, and can draw connecting line 213 by processor 26,223 and 233 and connecting line 213,223 and 233 with the surface of contact of corresponding pole between the resistance value summation, to judge the connection status of this electric battery.
In a preferred embodiment, battery unit BT1, BT2, BT3 and BT4 are battery cell or a plurality of battery cells in parallel.
In other preferred embodiment, first voltage check device is not only four, and first voltage check device can also be other number.
By the way, the detection system of electric battery of the present utility model directly detects the voltage of the two poles of the earth intercolumniation of battery unit by detection line, and then can accurately detect the voltage of each battery unit, and can judge the connection status of electric battery.
In addition, the utility model also provides a kind of battery power supply system that comprises above-mentioned electric battery, first voltage check device, second voltage check device, current sensing means and processor.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. the detection system of an electric battery, described electric battery comprises a plurality of battery units that are connected in series by connecting line, it is characterized in that, described detection system comprises a plurality of first voltage check devices corresponding with described battery unit, each described first voltage check device is respectively by two detection lines and corresponding described battery unit parallel connection, wherein said detection line directly connects the pole of corresponding described battery unit, so that described first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding described battery unit.
2. detection system according to claim 1, it is characterized in that, described detection system further comprises second voltage check device, described second voltage check device is in parallel with described electric battery by the detection line of two ends pole of the direct described electric battery of connection, with second voltage between the two ends pole that detects described electric battery.
3. detection system according to claim 2 is characterized in that described detection system further comprises current sensing means, and described current sensing means and described electric battery are connected in series, to detect the loop current of described electric battery.
4. detection system according to claim 3 is characterized in that described detection system further comprises processor, and described processor is judged the connection status of described electric battery according to described first voltage, described second voltage and described loop current.
5. battery power supply system, described battery power supply system comprises electric battery and detection system, described electric battery comprises a plurality of battery units that are connected in series by connecting line, it is characterized in that, described detection system comprises a plurality of first voltage check devices corresponding with described battery unit, each described first voltage check device is respectively by two detection lines and corresponding described battery unit parallel connection, wherein said detection line directly connects the pole of corresponding described battery unit, so that described first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding described battery unit.
6. battery power supply system according to claim 5, it is characterized in that, described detection system further comprises second voltage check device, described second voltage check device is in parallel with described electric battery by the detection line of two ends pole of the direct described electric battery of connection, to detect second voltage between the pole of described electric battery two ends.
7. battery power supply system according to claim 6 is characterized in that described detection system further comprises current sensing means, and described current sensing means and described electric battery are connected in series, to detect the loop current of described electric battery.
8. battery power supply system according to claim 7 is characterized in that described detection system further comprises processor, and described processor is judged the connection status of described electric battery according to described first voltage, described second voltage and described loop current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011201231611U CN202093150U (en) | 2011-04-22 | 2011-04-22 | Battery pack detection system and battery power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201231611U CN202093150U (en) | 2011-04-22 | 2011-04-22 | Battery pack detection system and battery power supply system |
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| CN202093150U true CN202093150U (en) | 2011-12-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680846A (en) * | 2012-05-11 | 2012-09-19 | 许继集团有限公司 | Methods for judging and protecting reliability of connection among battery units, and protection device |
| CN102749586A (en) * | 2011-04-22 | 2012-10-24 | 上海中科国嘉储能技术有限公司 | Detecting system of battery pack and battery power supply system |
| CN103308860A (en) * | 2012-03-15 | 2013-09-18 | 凹凸电子（武汉）有限公司 | Battery fault detection method, battery fault detection device and battery management system |
| CN105699776A (en) * | 2014-12-10 | 2016-06-22 | 大唐恩智浦半导体有限公司 | Method and apparatus for contact detection in battery packs |
| CN107187328A (en) * | 2017-05-17 | 2017-09-22 | 宁波普瑞均胜汽车电子有限公司 | Lithium ion battery management system and battery core monomer essential resistance on-line measurement diagnostic method |
-
2011
- 2011-04-22 CN CN2011201231611U patent/CN202093150U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749586A (en) * | 2011-04-22 | 2012-10-24 | 上海中科国嘉储能技术有限公司 | Detecting system of battery pack and battery power supply system |
| CN102749586B (en) * | 2011-04-22 | 2014-09-10 | 上海中科国嘉储能技术有限公司 | Detecting system of battery pack and battery power supply system |
| CN103308860A (en) * | 2012-03-15 | 2013-09-18 | 凹凸电子（武汉）有限公司 | Battery fault detection method, battery fault detection device and battery management system |
| CN102680846A (en) * | 2012-05-11 | 2012-09-19 | 许继集团有限公司 | Methods for judging and protecting reliability of connection among battery units, and protection device |
| CN102680846B (en) * | 2012-05-11 | 2015-01-14 | 许继电气股份有限公司 | Methods for judging and protecting reliability of connection among battery units, and protection device |
| CN105699776A (en) * | 2014-12-10 | 2016-06-22 | 大唐恩智浦半导体有限公司 | Method and apparatus for contact detection in battery packs |
| CN105699776B (en) * | 2014-12-10 | 2020-04-17 | 大唐恩智浦半导体有限公司 | Method and apparatus for contact point detection in battery pack |
| CN107187328A (en) * | 2017-05-17 | 2017-09-22 | 宁波普瑞均胜汽车电子有限公司 | Lithium ion battery management system and battery core monomer essential resistance on-line measurement diagnostic method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201203. 101 (double) room, No. 25, Chang Tung Road, 1387, Shanghai, Pudong New Area Patentee after: Shanghai Ju Wei energy storage technology Co., Ltd Address before: 201203. 101 (double) room, No. 25, Chang Tung Road, 1387, Shanghai, Pudong New Area Patentee before: Shanghai Zhongke Guojia Energy Storage Technology Co., Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160614 Address after: 523808, Guangdong District, Songshan hi tech Industrial Development Zone, Dongguan, seven industrial North Road, 1 force science and technology center, 3 floor, B District Patentee after: Dongguan Powerwise Technology Co., Ltd. Address before: 201203. 101 (double) room, No. 25, Chang Tung Road, 1387, Shanghai, Pudong New Area Patentee before: Shanghai Ju Wei energy storage technology Co., Ltd |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20200422 |