CN102749586A - Detecting system of battery pack and battery power supply system - Google Patents
Detecting system of battery pack and battery power supply system Download PDFInfo
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- CN102749586A CN102749586A CN2011101032824A CN201110103282A CN102749586A CN 102749586 A CN102749586 A CN 102749586A CN 2011101032824 A CN2011101032824 A CN 2011101032824A CN 201110103282 A CN201110103282 A CN 201110103282A CN 102749586 A CN102749586 A CN 102749586A
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- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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Abstract
The invention provides a detecting system of a battery pack. The battery pack comprises a plurality of battery units which are connected in series through connecting wires, the detecting system comprises a plurality of first voltage detection devices corresponding to the battery units, and each first voltage detection device is connected in parallel with a corresponding battery unit through two detecting wires respectively; the detecting wires are directly connected with pole columns of the corresponding battery units to ensure that the first voltage detection devices directly detect the first voltage between the two pole columns of each corresponding battery unit. The invention also provides a battery power supply system. Therefore, by virtue of the detecting system of the battery pack and the battery power supply system, the voltage between two pole columns of each battery unit can be directly detected through the detecting wires, so that the voltage of each battery unit can be accurately detected, and the connection state of the battery pack can be judged.
Description
Technical field
The present invention relates to the battery management technical field, particularly relate to a kind of detection system and battery power supply system of electric battery.
Background technology
In the use of battery, battery is used the 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 through connecting line 101,102 and 103.Voltage check device detects voltage Vb1, Vb2, Vb3 and the Vb4 of battery unit BT1, BT2, BT3 and BT4 through 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 on the connecting line 101,102 and 103 between battery unit BT1, BT2, BT3 and the BT4 pressure drop 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 voltage Vb of electric battery is directly obtained by voltage Vb1, Vb2, Vb3 and Vb4 summation.Since exist connecting line 101,102 and 103 pressure drop and connecting line 101,102 and 103 and the pole surface of contact between pressure drop, cause the 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, can't accurately detect the problem of the voltage of each battery unit with voltage check device in the solution prior art.
Summary of the invention
The technical matters that the present invention 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 present invention 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 through connecting line; Detection system comprises a plurality of first voltage check devices corresponding with battery unit; Through two detection lines and corresponding battery unit parallel connection, wherein detection line directly connects the pole of corresponding battery unit to each first voltage check device, so that first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding battery unit respectively.
According to one preferred embodiment of the present invention, detection system further comprises second voltage check device, and the detection line of the two ends pole of second voltage check device through directly connecting electric battery is parallelly connected with electric battery, with second voltage between the two ends pole of detection electric battery.
According to one preferred embodiment of the present invention, 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 one preferred embodiment of the present invention, detection system further comprises processor, and processor is judged the connection status of electric battery according to first voltage, second voltage and loop current.
According to one preferred embodiment of the present invention, processor is sued for peace to first voltage, and the difference of summed result of utilizing second voltage and first voltage is divided by loop current, and judges the connection status of electric battery according to the phase division result.
For solving the problems of the technologies described above; Another technical scheme that the present invention 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 through connecting line, and detection system comprises a plurality of first voltage check devices corresponding with battery unit, and each said first voltage check device is respectively through 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 one preferred embodiment of the present invention, detection system further comprises second voltage check device, and the detection line of the two ends pole of second voltage check device through directly connecting electric battery is parallelly connected with electric battery, with second voltage between the two ends pole of detection electric battery.
According to one preferred embodiment of the present invention, 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 one preferred embodiment of the present invention, detection system further comprises processor, and processor is judged the connection status of electric battery according to first voltage, second voltage and loop current.
According to one preferred embodiment of the present invention, processor is sued for peace to first voltage, and the difference of summed result of utilizing second voltage and first voltage is divided by loop current, and judges the connection status of electric battery according to the phase division result.
The invention has the beneficial effects as follows: the situation that is different from prior art; The detection system of electric battery of the present invention and battery power supply system directly detect the voltage of the two poles of the earth intercolumniation of battery unit through 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 first embodiment of the invention.
Embodiment
See also Fig. 2, Fig. 2 is according to the synoptic diagram of the detection system of the electric battery of first embodiment of the invention.As shown in Figure 2; Electric battery comprises battery unit BT1, BT2, BT3 and the BT4 that is connected in series through connecting line 213,223 and 233, and the detection system 20 of electric battery of the present invention 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 through two detection lines 211 and 212 parallelly connected 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 through two detection lines 221 and 222 parallelly connected 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 through two detection lines 231 and 232 parallelly connected 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 through two detection lines 241 and 242 parallelly connected 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 through directly connecting electric battery and 252 parallelly connected 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.
When concrete the use; Each first voltage check device 21,22,23 and 24 is respectively through detection line 211,212,221,222,231,232,241 and 242 parallelly connected with corresponding battery unit BT1, BT2, BT3 and BT4; Detection line 211,212,221,222,231,232,241 and 242 directly connects the pole of corresponding battery unit BT1, BT2, 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 through processor 26 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, to judge the connection status of this electric battery.
In a preferred embodiment, battery unit BT1, BT2, BT3 and BT4 are a plurality of battery cells of battery cell or parallel connection.
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 invention directly detects the voltage of the two poles of the earth intercolumniation of battery unit through 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 present invention 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 is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention 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 invention.
Claims (10)
1. the detection system of an electric battery; Said electric battery comprises a plurality of battery units that are connected in series through connecting line; It is characterized in that; Said detection system comprises a plurality of first voltage check devices corresponding with said battery unit; Through two detection lines and corresponding said battery unit parallel connection, wherein said detection line directly connects the pole of corresponding said battery unit to each said first voltage check device, so that said first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding said battery unit respectively.
2. detection system according to claim 1; It is characterized in that; Said detection system further comprises second voltage check device; Said second voltage check device is parallelly connected with said electric battery through the detection line of two ends pole of the direct said electric battery of connection, with second voltage between the two ends pole that detects said electric battery.
3. detection system according to claim 2 is characterized in that said detection system further comprises current sensing means, and said current sensing means and said electric battery are connected in series, to detect the loop current of said electric battery.
4. detection system according to claim 3 is characterized in that said detection system further comprises processor, and said processor is judged the connection status of said electric battery according to said first voltage, said second voltage and said loop current.
5. detection system according to claim 4; It is characterized in that; Said processor is sued for peace to said first voltage, and the difference of summed result of utilizing said second voltage and said first voltage is divided by said loop current, and judges the connection status of said electric battery according to the phase division result.
6. battery power supply system; Said battery power supply system comprises electric battery and detection system; Said electric battery comprises a plurality of battery units that are connected in series through connecting line; It is characterized in that said detection system comprises a plurality of first voltage check devices corresponding with said battery unit, each said first voltage check device is respectively through two detection lines and corresponding said battery unit parallel connection; Wherein said detection line directly connects the pole of corresponding said battery unit, so that said first voltage check device directly detects first voltage of the two poles of the earth intercolumniation of corresponding said battery unit.
7. battery power supply system according to claim 6; It is characterized in that; Said detection system further comprises second voltage check device; Said second voltage check device is parallelly connected with said electric battery through the detection line of two ends pole of the direct said electric battery of connection, to detect second voltage between the pole of said electric battery two ends.
8. battery power supply system according to claim 7 is characterized in that said detection system further comprises current sensing means, and said current sensing means and said electric battery are connected in series, to detect the loop current of said electric battery.
9. battery power supply system according to claim 8 is characterized in that said detection system further comprises processor, and said processor is judged the connection status of said electric battery according to said first voltage, said second voltage and said loop current.
10. battery power supply system according to claim 9; It is characterized in that; Said processor is sued for peace to said first voltage; And the difference of summed result of utilizing said second voltage and said first voltage is divided by said loop current, and judges the connection status of said electric battery according to the phase division result.
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| CN201110103282.4A CN102749586B (en) | 2011-04-22 | 2011-04-22 | Detecting system of battery pack and battery power supply system |
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| CN201110103282.4A CN102749586B (en) | 2011-04-22 | 2011-04-22 | Detecting system of battery pack and battery power supply system |
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Cited By (3)
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| CN104253585A (en) * | 2013-06-25 | 2014-12-31 | 沃尔泰拉半导体公司 | Photovoltaic panels having electrical arc detection capability, and associated system and method |
| CN104569591A (en) * | 2013-10-11 | 2015-04-29 | 保定钰鑫电气科技有限公司 | Wiring method for measurement of single internal resistance of storage battery by using single measuring module |
| CN105388421A (en) * | 2014-09-02 | 2016-03-09 | 现代摩比斯株式会社 | Battery sensor and battery monitoring system |
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| CN105388421B (en) * | 2014-09-02 | 2019-05-21 | 现代摩比斯株式会社 | Battery sensor and battery monitor system |
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| CN102749586B (en) | 2014-09-10 |
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Address after: 201203. 101 (double) room, No. 25, Chang Tung Road, 1387, Shanghai, Pudong New Area Patentee after: SHANGHAI JUWEI 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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Effective date of registration: 20160608 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 JUWEI ENERGY STORAGE TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Detecting system of battery pack and battery power supply system Effective date of registration: 20180129 Granted publication date: 20140910 Pledgee: The Bank of Dongguan Songshan Lake Science and technology branch of the Limited by Share Ltd. Pledgor: DONGGUAN POWERWISE TECHNOLOGY CO.,LTD. Registration number: 2018440000033 |
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