CN102749586A - Detecting system of battery pack and battery power supply system - Google Patents

Detecting system of battery pack and battery power supply system Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
voltage
battery
electric battery
detection system
check device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011101032824A
Other languages
Chinese (zh)
Other versions
CN102749586B (en
Inventor
周智敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Powerwise Technology Co ltd
Original Assignee
Shanghai Zhongke Guojia Energy Storage Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Zhongke Guojia Energy Storage Technology Co Ltd filed Critical Shanghai Zhongke Guojia Energy Storage Technology Co Ltd
Priority to CN201110103282.4A priority Critical patent/CN102749586B/en
Publication of CN102749586A publication Critical patent/CN102749586A/en
Application granted granted Critical
Publication of CN102749586B publication Critical patent/CN102749586B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

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

The detection system of electric battery and battery power supply system
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.
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 through 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 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.
CN201110103282.4A 2011-04-22 2011-04-22 Detecting system of battery pack and battery power supply system Expired - Fee Related CN102749586B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110103282.4A CN102749586B (en) 2011-04-22 2011-04-22 Detecting system of battery pack and battery power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110103282.4A CN102749586B (en) 2011-04-22 2011-04-22 Detecting system of battery pack and battery power supply system

Publications (2)

Publication Number Publication Date
CN102749586A true CN102749586A (en) 2012-10-24
CN102749586B CN102749586B (en) 2014-09-10

Family

ID=47029935

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110103282.4A Expired - Fee Related CN102749586B (en) 2011-04-22 2011-04-22 Detecting system of battery pack and battery power supply system

Country Status (1)

Country Link
CN (1) CN102749586B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101331644A (en) * 2005-12-15 2008-12-24 Lg化学株式会社 Multi battery pack system, control method thereof, and battery pack using the same
CN101692502A (en) * 2009-09-25 2010-04-07 深圳市航盛电子股份有限公司 Battery management system and method thereof
CN201732152U (en) * 2010-06-11 2011-02-02 德阳市顺昌重工机械制造有限公司 Detection system for storage battery packs
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
CN202093150U (en) * 2011-04-22 2011-12-28 上海中科国嘉储能技术有限公司 Battery pack detection system and battery power supply system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101331644A (en) * 2005-12-15 2008-12-24 Lg化学株式会社 Multi battery pack system, control method thereof, and battery pack using the same
CN101692502A (en) * 2009-09-25 2010-04-07 深圳市航盛电子股份有限公司 Battery management system and method thereof
CN201732152U (en) * 2010-06-11 2011-02-02 德阳市顺昌重工机械制造有限公司 Detection system for storage battery packs
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
CN202093150U (en) * 2011-04-22 2011-12-28 上海中科国嘉储能技术有限公司 Battery pack detection system and battery power supply system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US10120033B2 (en) 2014-09-02 2018-11-06 Hyundai Mobis Co., Ltd. Battery sensor and battery monitoring system
CN105388421B (en) * 2014-09-02 2019-05-21 现代摩比斯株式会社 Battery sensor and battery monitor system

Also Published As

Publication number Publication date
CN102749586B (en) 2014-09-10

Similar Documents

Publication Publication Date Title
CN202093150U (en) Battery pack detection system and battery power supply system
CN103151811B (en) A kind of SOC detection method of vanadium battery management system
CN103415778A (en) SOC correcting system having multiple packs in parallel
CN104753093A (en) Charger and charging control method
CN103048623A (en) Method for quickly detecting self discharge rate of lithium iron phosphate lithium-ion battery
CN102749586B (en) Detecting system of battery pack and battery power supply system
CN103138025B (en) Electric leakage detection circuit and battery system
CN204758773U (en) Simulation battery circuit and charging circuit detection circuitry
CN201583635U (en) Capacity detection circuit for power lithium batteries
CN102136750B (en) Monomer charging and discharging tail balancing module and battery pack balancing protection management system thereof
CN205091395U (en) Internal resistance of cell's device is measured to loss -of -charge method
CN203607876U (en) A battery equalization management apparatus
CN106671813A (en) Battery balancing method and battery management system
CN107728079B (en) Quick detecting system of photovoltaic energy storage battery
CN102355019B (en) Control method of solar clothes charging current and device
CN202281827U (en) Distributed internal-resistance on-line monitoring system for storage batteries
CN103078369B (en) Lithium battery power shortage active device
CN202471837U (en) A battery internal resistance measuring circuit
CN215894872U (en) Battery pack polarity detection device
CN201732152U (en) Detection system for storage battery packs
CN108306060A (en) The prediction technique of battery system connection reliability
CN102355017A (en) Lossless power battery equalizer
CN203312415U (en) Flow cell galvanic pile
CN103633699B (en) A kind of mobile energy storage battery system
CN203104055U (en) Temperature detection device for detecting battery temperature on charger

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
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 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.

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

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.

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

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

PP01 Preservation of patent right
PP01 Preservation of patent right

Effective date of registration: 20220324

Granted publication date: 20140910

PD01 Discharge of preservation of patent
PD01 Discharge of preservation of patent

Date of cancellation: 20240104

Granted publication date: 20140910

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140910