CN202260494U - Battery charging system - Google Patents

Battery charging system Download PDF

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Publication number
CN202260494U
CN202260494U CN2011202665622U CN201120266562U CN202260494U CN 202260494 U CN202260494 U CN 202260494U CN 2011202665622 U CN2011202665622 U CN 2011202665622U CN 201120266562 U CN201120266562 U CN 201120266562U CN 202260494 U CN202260494 U CN 202260494U
Authority
CN
China
Prior art keywords
resistance
control chip
output
charghing
batter
Prior art date
Application number
CN2011202665622U
Other languages
Chinese (zh)
Inventor
邓林旺
曾宇
李飞飞
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to CN2011202665622U priority Critical patent/CN202260494U/en
Application granted granted Critical
Publication of CN202260494U publication Critical patent/CN202260494U/en

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Abstract

The utility model provides a battery charging system, which comprises a control chip, a first resistor, a second resistor, a voltage selection switch and at least two resistive dividers, wherein the control chip has an input end and an output end; one end of the first resistor is connected with the output end of the control chip, and the other end of the first resistor is connected with one end of the second resistor of which the other end is a charging voltage output end; the voltage selection switch is connected in series with the at least two resistive dividers, and then is connected in parallel with the first resistor. A proper voltage can be selected to charge a battery according to needs by selecting different resistive dividers and outputting different voltages.

Description

A kind of batter-charghing system
Technical field
The utility model relates to a kind of batter-charghing system.
Background technology
The energy-storage battery group generally is in series by multiple batteries, and along with the growth of service time, the difference of peripheral temperature and the variation of contact impedance, the SOC of inner some battery of battery pack can squint, and then influences the performance of whole battery group.For the SOC to battery pack revises, just need charge to SOC battery on the low side.
Overcoming the above problems general employing single channel charger at present charges to single battery; General single channel charger all charges to battery with fixed voltage when working; It is what a magnitude of voltage of inner setting; But this type of charger can only charge to battery with a fixed voltage value, can't select different voltages with different that battery is charged according to the battery s own situation.
The utility model content
Can't select the different voltages with different value that battery is charged to present single channel charger, the utility model provides a kind of batter-charghing system, can select different voltages with different that battery is charged.
A kind of batter-charghing system; Said batter-charghing system comprises control chip, first resistance, second resistance, voltage-selected switch and at least two divider resistances that are used to control the output charging voltage; Said control chip has input and output; One end of said first resistance links to each other with the output of said control chip; The other end of said first resistance links to each other with an end of said second resistance, and the other end of said second resistance is the charging voltage output, after said voltage-selected switch is connected in series with said two divider resistances at least with said first resistance and connect.
Further, said batter-charghing system also comprises supply module, and the input of said control chip links to each other with said supply module.
Further, said batter-charghing system also comprises battery selector switch, and the input of said battery selector switch links to each other with said charging voltage output, and each output of said battery selector switch links to each other with single battery respectively.
Further; Said batter-charghing system also comprises the overvoltage protective module of gate-controlled switch and the conducting and the shutoff that are used to detect the builtin voltage of control chip and control said gate-controlled switch; Said supply module is connected with an end of said gate-controlled switch; The other end of said gate-controlled switch links to each other with the input of control chip, and the output of said overvoltage protective module links to each other with said gate-controlled switch, and the input of said overvoltage protective module is electrically connected with said control chip.
Further, said batter-charghing system also comprises failure indication module, and said failure indication module is electrically connected with control chip.
Further, said control chip adopts BQ24172.
The utility model makes batter-charghing system export a plurality of magnitudes of voltage through voltage-selected switch and divider resistance are set, and can select different voltages with different that battery is charged to different battery situation.
Description of drawings
The structural representation of a kind of batter-charghing system that Fig. 1 provides for the utility model.
The structural representation of a kind of batter-charghing system preferred embodiment that Fig. 2 provides for the utility model.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in accompanying drawing 1; A kind of batter-charghing system; Comprise control chip 20, first resistance R 1, second resistance R 2, voltage-selected switch 30 and at least one divider resistance 40, control chip 20 is used to regulate the charging voltage of control output, and first resistance R 1, second resistance R 2 and at least one divider resistance 40 are used for dividing potential drop; Control chip 20 has input and output; One end of first resistance R 1 links to each other with the output of control chip 20, and the other end of first resistance R 1 links to each other with an end of second resistance R 2, after voltage-selected switch 30 is connected in series with at least one divider resistance 40 with first resistance R 1 and connect; An output of voltage-selected switch 30 is corresponding with a divider resistance, and the other end of second resistance R 2 is the charging voltage output.
Further, shown in accompanying drawing 2, batter-charghing system also comprises supply module 10, and the input of control chip 20 links to each other with said supply module 10, and supply module 10 is used to system's power supply, adopts power supply chip 78M05.
Batter-charghing system also comprises battery selector switch 50 and battery pack 60; The input of battery selector switch 50 links to each other with the charging voltage output of second resistance R 2; Battery pack 60 comprises at least one batteries; An output of battery selector switch 50 is corresponding with a batteries, and battery selector switch 50 is used to select the battery that is recharged.
Batter-charghing system also comprises gate-controlled switch 80 and overvoltage protective module 70, and supply module 10 links to each other with an end of gate-controlled switch 80, and the other end of gate-controlled switch 80 links to each other with the input of control chip 20; Gate-controlled switch 80 be used to control supply module 10 and control chip 20 between break-make; The output of overvoltage protective module 70 links to each other with gate-controlled switch 80, the conducting and the shutoff of output signal controlling gate-controlled switch 80, and the input of overvoltage protective module 70 links to each other with control chip 20; Preferably; Overvoltage protective module 70 adopts comparator, the builtin voltage and the set point that detect control chip 20 is compared, if the builtin voltage of control chip 20 is greater than set point; Then overvoltage protective module 70 output protection signal controlling gate-controlled switches 80 break off, and supply module 10 stops system being supplied power.
Batter-charghing system also further comprises failure indication module 90; Failure indication module 90 is electrically connected with control chip 20, and preferably, failure indication module 90 adopts light-emitting diode; When system breaks down; During faults such as for example charging when generation delays, and battery is unsettled, control chip 20 control lumination of light emitting diode.
The control chip 20 preferred BQ24172 that adopt can regulate output voltage and output current as required.
Further set forth the utility model through specific embodiment below.
During system works; Gate-controlled switch 80 closures, supply module 10 are control chip 20 power supplies, and the output voltage of control chip 20 can be regulated according to actual needs; Control chip 20 output constant voltages; Overvoltage protective module 70 detects the builtin voltage of control chips 20, and when builtin voltage during greater than set point, overvoltage protective module 70 output protection signal controlling gate-controlled switches 80 break off; Simultaneously the detection module of control chip 20 self detects the inner working condition of control chip 20 in real time, and then control fault display module 90 shows faults when faults such as charging delays, battery is unsettled occurring.
The charging voltage output of resistance R 2 connects battery selector switch 50, and each output of battery selector switch 50 connects a batteries, selects wherein a batteries to charge as required; According to the charging voltage of battery needs, voltage-selected switch 30 selects suitable divider resistance to connect, and the resistance of each divider resistance does not all communicate; The divider resistance of connecting and 1 parallel connection of first resistance R dividing potential drop of connecting with second resistance R 2 again; The other end of second resistance R 2 is the charging voltage output, and the divider resistance of selection is different, and then output voltage is also different; Can select divider resistance as required like this, exporting suitable voltage is that battery charges.
In the present embodiment, the quantity of divider resistance also can be provided with as required voluntarily.For example, the constant voltage of control chip 20 output 2.1V, selecting resistance is that the resistance of 2M is as first resistance R 1; Select resistance be the resistance of 5.1K as second resistance R 2, according to the resistance of output voltage calculating partial pressure resistance: V1/V2=R/ (R+5.1K), wherein V1 is 2.1V; V2 is an output voltage, and R is the resistance of divider resistance, for example; Output voltage is 2.8V, and divider resistance is 15K; Output voltage is 2.9V, and divider resistance is 13K; Output voltage is 3.0V, and divider resistance is 12K; Output voltage is 3.17V, and divider resistance is 10K, through selecting different divider resistances, can obtain different output voltage like this.
Through the utility model, can make batter-charghing system export a plurality of magnitudes of voltage, can select different voltages with different that battery is charged to no battery situation.
The above is merely the preferred embodiment of the utility model, not in order to restriction the utility model, any modification of being done within all spirit at the utility model and the principle, is equal to and replaces and improvement etc., all should be included within the protection range of utility model.

Claims (6)

1. batter-charghing system; It is characterized in that; Said batter-charghing system comprises control chip, first resistance, second resistance, voltage-selected switch and at least two divider resistances that are used to control the output charging voltage; Said control chip has input and output, and an end of said first resistance links to each other with the output of said control chip, and the other end of said first resistance links to each other with an end of said second resistance; The other end of said second resistance is the charging voltage output, after said voltage-selected switch is connected in series with said two divider resistances at least with said first resistance and connect.
2. batter-charghing system according to claim 1 is characterized in that said batter-charghing system also comprises supply module, and the input of said control chip links to each other with said supply module.
3. batter-charghing system according to claim 1; It is characterized in that; Said batter-charghing system also comprises battery selector switch, and the input of said battery selector switch links to each other with said charging voltage output, and each output of said battery selector switch links to each other with single battery respectively.
4. batter-charghing system according to claim 2; It is characterized in that; Said batter-charghing system also comprises the overvoltage protective module of gate-controlled switch and the conducting and the shutoff that are used to detect the builtin voltage of control chip and control said gate-controlled switch; Said supply module is connected with an end of said gate-controlled switch; The other end of said gate-controlled switch links to each other with the input of control chip, and the output of said overvoltage protective module links to each other with said gate-controlled switch, and the input of said overvoltage protective module is electrically connected with said control chip.
5. batter-charghing system according to claim 1 is characterized in that said batter-charghing system also comprises failure indication module, and said failure indication module is electrically connected with control chip.
6. batter-charghing system according to claim 1 is characterized in that, said control chip adopts BQ24172.
CN2011202665622U 2011-07-26 2011-07-26 Battery charging system CN202260494U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202665622U CN202260494U (en) 2011-07-26 2011-07-26 Battery charging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202665622U CN202260494U (en) 2011-07-26 2011-07-26 Battery charging system

Publications (1)

Publication Number Publication Date
CN202260494U true CN202260494U (en) 2012-05-30

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Application Number Title Priority Date Filing Date
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102891516A (en) * 2012-10-25 2013-01-23 徐州市恒源电器有限公司 Charging circuit capable of being compatible with various electronic devices
US9660469B2 (en) 2014-09-25 2017-05-23 Lenovo (Beijing) Co., Ltd. Multi-battery charging circuit and charging method thereof
CN106786836A (en) * 2016-11-22 2017-05-31 天津梦琪科技有限公司 A kind of electric quantity of batteries of electric vehicle manages display system
CN107612066A (en) * 2017-09-15 2018-01-19 深圳天珑无线科技有限公司 Charging circuit, intelligent terminal and its charging management method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102891516A (en) * 2012-10-25 2013-01-23 徐州市恒源电器有限公司 Charging circuit capable of being compatible with various electronic devices
US9660469B2 (en) 2014-09-25 2017-05-23 Lenovo (Beijing) Co., Ltd. Multi-battery charging circuit and charging method thereof
CN106786836A (en) * 2016-11-22 2017-05-31 天津梦琪科技有限公司 A kind of electric quantity of batteries of electric vehicle manages display system
CN107612066A (en) * 2017-09-15 2018-01-19 深圳天珑无线科技有限公司 Charging circuit, intelligent terminal and its charging management method

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