CN203135504U - Battery management system - Google Patents
Battery management system Download PDFInfo
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- CN203135504U CN203135504U CN2013201096110U CN201320109611U CN203135504U CN 203135504 U CN203135504 U CN 203135504U CN 2013201096110 U CN2013201096110 U CN 2013201096110U CN 201320109611 U CN201320109611 U CN 201320109611U CN 203135504 U CN203135504 U CN 203135504U
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- electronic switch
- battery management
- management system
- power supply
- control chip
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model discloses a battery management system, which comprises a battery box, a wheel hub motor, a first electronic switch, a second electronic switch, a first power supply converter, a steering motor and a control chip. The battery box is used for providing a power supply. One end of the first electronic switch is connected with the positive output end of the battery box, while the other end of the first electronic switch is connected with the negative output end of the battery box through the wheel hub motor. One end of the second electronic switch is connected with the positive output end of the battery box, while the other end of the second electronic switch is connected with the positive input end of the first power supply converter. The negative input end of the first power supply converter is connected with the negative input end of the battery box. The steering box is connected with the output end of the first power supply converter. The control chip is used for controlling the working states of the first electronic switch and the second electronic switch. According to the technical scheme of the utility model, the battery management system can be powered by the wheel hub motor and the steering motor independently and simultaneously.
Description
Technical field
The utility model relates to technical field of electronic products, particularly a kind of battery management system.
Background technology
As everyone knows, the battery management system of electric automobile comprises electric core group, battery management system, charger, relay and fuse, supply convertor, casing and interface composition.System voltage of the general output of battery management system is given an electric machine controller power supply, becomes direct current 12V through supply convertor again and gives other electric power supply of vehicle body, therefore can not realize giving simultaneously wheel hub motor and the steer motor power supply of drive motors.
The utility model content
Main purpose of the present utility model is to provide a kind of battery management system, powers when being intended to realize wheel hub motor and steer motor independent same.
To achieve these goals, the utility model provides a kind of battery management system, and this battery management system comprises battery case, wheel hub motor, first electronic switch, second electronic switch, first power supply changeover device, steer motor and control chip, wherein,
Battery case is used for providing power supply;
First electronic switch, an end is connected with the positive output end of described battery case, and the other end is connected with the negative output terminal of battery case by wheel hub motor;
Second electronic switch, an end is connected with the positive output end of described battery case, and the other end is connected with the positive input terminal of first power supply changeover device, and the negative input end of this first power supply changeover device is connected with the negative input end of described battery case;
Steer motor is connected with the output of described first power supply changeover device;
Control chip is for the control chip of described first electronic switch of control and the second electronic switch operating state.
Preferably, described battery management system also comprises for detection of the voltage of battery case and the battery management unit of temperature, this battery management unit is connected with described control chip, and will detect the voltage and the temperature data that obtain and be sent to control chip, control the operating state of described first electronic switch and second electronic switch for control chip.
Preferably, described battery management system also comprises for the second source transducer for charging on-vehicle battery, the positive input terminal of this second source transducer is connected with the positive input terminal of described first power supply changeover device, and negative input end is connected with the negative input end of described first power supply changeover device; The output of described second source transducer is connected with the power input of described control chip and the power input of battery management unit respectively.
Preferably, be connected one the 3rd fuse between the positive input terminal of described first power supply changeover device and second electronic switch, the positive input terminal of described second source transducer is connected to the junction of the 3rd fuse and second electronic switch by one the 4th fuse.
Preferably, described battery management system also comprises shunt and BHU, and this shunt is connected between the negative input end of battery case negative output terminal and first power supply changeover device; The input end of BHU is connected with described shunt, signal output part is connected with described control chip, be used for current measurement and insulating monitoring, and will measure the data that the current data that obtains and insulation detect and export control chip to, control the operating state of described first electronic switch and second electronic switch for control chip; The power input of described BHU is connected with the output of described second source transducer.
Preferably, described battery management system also comprises the 3rd electronic switch and the charger adaptive with described battery case, wherein an end of the 3rd electronic switch is connected with the positive output end of described battery case, the positive output end of the charger of the other end connects, and the negative output terminal of this charger is connected with the negative output terminal of battery case by described shunt.
Preferably, described control chip is connected with described charger, and exports corresponding charge parameter to charger, to adjust charger to the charge parameter of battery case charging.
Preferably, battery management system also comprises quadrielectron switch, and an end of this quadrielectron switch is connected with the positive output end of described battery case, and the other end is connected to the junction of first electronic switch and wheel hub motor.
Preferably, described quadrielectron switch also is in series with first fuse and first resistance between the junction of itself and wheel hub motor.
Preferably, described wheel hub motor is 4, and each wheel hub motor all is connected with described first electronic switch by second fuse of a correspondence; Described steer motor is 4, corresponding setting with wheel hub motor, and be connected with the output of described first power supply changeover device respectively.
The utility model, export corresponding level signal to the first electronic switch and second electronic switch by control chip, thereby control first electronic switch and second electronic switch closes, arrive wheel hub motor after making the power supply one tunnel of battery case output through first electronic switch, for wheel hub motor provides power supply, another road is the steer motor power supply through the supply voltage that forms 48V behind first power supply changeover device then.Owing to be the voltage that is suitable for steer motor by first power supply changeover device with the voltage transitions of battery case, thereby power when having realized wheel hub motor and steer motor independent same.Owing to reduced the operating voltage of steer motor, therefore reduce the battery capacity demand to battery case in addition, thereby reduced the cost of battery case.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model battery management system one embodiment.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, Fig. 1 is the electrical block diagram of the utility model battery management system one embodiment.The battery management system that present embodiment provides comprises battery case 10, wheel hub motor 11, first electronic switch 12, second electronic switch 13, first power supply changeover device 14, steer motor 15 and control chip 16, wherein,
First electronic switch, 12, one ends are connected with the positive output end of battery case 10, and the other end is connected with the negative output terminal of battery case 10 by wheel hub motor 11;
Second electronic switch, 13, one ends are connected with the positive output end of battery case 10, and the other end is connected with the positive input terminal of first power supply changeover device 14, and the negative input end of this first power supply changeover device 14 is connected with the negative input end of battery case 10;
Above-mentioned battery case 10 is composed in parallel by the electric core of 23 joint 50AH in the present embodiment, and the supply power voltage of output 72V.Above-mentioned first power supply device conversion 14 is used for the voltage transitions of 72V is formed the supply voltage of 48V, and exports steer motor 15 to.
The utility model, by control chip 16 corresponding level signal to the first electronic switch 12 of output and second electronic switches 13, thereby control first electronic switch 12 and second electronic switch, 13 closures, make the power supply one tunnel of battery case 10 outputs arrive wheel hub motor 11 through first electronic switch, 12 backs, for wheel hub motor 11 provides power supply, another road is steer motor 15 power supplies through the supply voltage of first power supply changeover device, 14 back formation 48V then.Owing to be the voltage that is suitable for steer motor 15 by first power supply changeover device 14 with the voltage transitions of battery case 10, thereby power when having realized wheel hub motor 11 and steer motor 15 independent same.Owing to reduced the operating voltage of steer motor 15, therefore reduce the battery capacity demand to battery case 10 in addition, thereby reduced the cost of battery case 10.
Should be noted that above-mentioned control chip is BCU(Brake Control Unit).
Further, above-mentioned battery management system also comprises for detection of the voltage of battery case 10 and battery management unit 17, shunt 18, the BHU19(high pressure administrative unit of temperature) and for the second source transducer 20 for charging on-vehicle battery.Wherein, the positive input terminal of second source transducer 20 is connected with the positive input terminal of first power supply changeover device 14, and negative input end is connected with the negative input end of first power supply changeover device 14; The output of described second source transducer 20 is connected with the power input of described control chip 16 and the power input of battery management unit 17 respectively.Battery management unit 17 is connected with above-mentioned control chip 16, and will detect the voltage and the temperature data that obtain and be sent to control chip 16, for the operating state of control chip 16 control first electronic switches 12 and second electronic switch 13.Above-mentioned battery management system also comprises shunt 18 and BHU19, and this shunt 18 is connected between the negative input end of battery case 10 negative output terminals and first power supply changeover device 14; The input end of BHU19 is connected with shunt 18, signal output part is connected with control chip 16, be used for current measurement and insulating monitoring, and will measure the data that the current data that obtains and insulation detect and export control chip 16 to, for the operating state of control chip 16 described first electronic switches 12 of control and second electronic switch 13; The power input of above-mentioned BHU19 is connected with the output of above-mentioned second source transducer 20.
In the present embodiment, be used for being connected by the output of key switch with control chip 16 second source transducers 20 to the on-vehicle battery of other electrical appliance power supplies of automobile.
When key switch was in KEY_OFF shelves state or extracts key, control chip 16 was in off-position (being off position), and the energy of battery management system is externally output or input not.
When closed key switch during to KEY_ON shelves state, the supply voltage of on-vehicle battery output 12V is control chip 16, battery management unit 17 and BHU19 power supply, and the power-on self-test operation is all finished in control chip 16, battery management unit 17 and BHU19 power supply.
When closed key switch during to the KEY_START shelves, control chip 16 will be through outputing control signals to first electronic switch 12 behind first preset time, thereby make electronic switch 12 closures of winning, and battery case 10 will directly be powered to wheel hub motor.When motor turning, by control chip 16 controls second electronic switch 13 closures, the voltage of battery case 10 will power for steer motor 15 by the voltage of first power supply changeover device, 14 conversion formation 48V.
Should be noted that in the present embodiment that above-mentioned battery management unit 17 is BMU(Battery Management Unit).
Further, based on above-described embodiment, in the present embodiment, above-mentioned battery management system also comprises the 3rd electronic switch 21 and the charger 22 adaptive with battery case 10, wherein an end of the 3rd electronic switch 21 is connected with the positive output end of described battery case 10, the positive output end of the charger 22 of the other end connects, and the negative output terminal of this charger 22 is connected with the negative output terminal of battery case 10 by described shunt 18.Described control chip 16 is connected with charger 22, and exports corresponding charge parameter to charger 22, to adjust the charge parameter of 22 pairs of battery cases of charger, 10 chargings.
In the present embodiment, after the power-on self-test operation was all finished in control chip 16, battery management unit 17 and BHU19 power supply, whether control chip 16 detected charger 22 in real time and powers on.When charger 22 powers on be, after being charger 22 external 220V alternating voltages, export corresponding charge parameter to charger 22, this charger 22 will receive this charge parameter, and adjust charging voltage and the charging current that 22 pairs of battery cases 10 of charger charge according to this charge parameter, simultaneously control signal to the 3rd electronic switch 21 accordingly by control chip 16 outputs, make the 3rd electronic switch 21 closures, thereby realize the charging of 22 pairs of battery cases 10 of charger.
In charging process, voltage and temperature by 17 pairs of battery cases 10 of battery management unit are monitored in real time, measure and insulating monitoring by the charging current of BHU19, and the parameter of monitoring as battery management unit 17 and BHU19 is when surpassing preset value, then output control signals to the 3rd electronic switch 21 by control chip 16, make the 3rd electronic switch 21 be converted to off-state from closure state, thereby cut off the charging of battery case 10 automatically.Therefore can guarantee that battery case 10 is operated in the preferable working region, makes that the charge efficiency of battery case 10 is better, thereby can prolong the useful life of battery case 10.
Based on above-described embodiment, in the present embodiment, above-mentioned battery management system also comprises quadrielectron switch 23, and an end of this quadrielectron switch 23 is connected with the positive output end of battery case 10, and the other end is connected to the junction of first electronic switch 12 and wheel hub motor 11.Described quadrielectron switch 23 also is in series with first fuse 24 and first resistance R 1 between the junction of itself and wheel hub motor 11.
In the present embodiment, when closed key switch during to the KEY_START shelves, at first by control chip 16 control quadrielectron switches 23 closures, wheel hub motor 11 is carried out (as 200ms) after precharge a period of time, this control chip 16 outputs control signals to first electronic switch 12 then, control this first electronic switch, 12 closures, thereby make battery case 10 directly to power to wheel hub motor 11.In the present embodiment, carry out precharge owing to increased by 10 pairs of wheel hub motors of quadrielectron switch 23 control battery cases 11, therefore can prevent that big electric current directly is carried on the wheel hub motor 11, thereby reduce the impact of electric current to the influence of wheel hub motor 11, prolong the useful life of wheel hub motor 11.During this external pre-charge state, if when having short-circuit conditions, first fuse 24 will fuse because electric current is excessive, therefore can effectively avoid battery case 10 to cause battery case blast and burning because of overcurrent in discharge process.
Particularly, above-mentioned wheel hub motor 11 is 4, and each wheel hub motor 11 all is connected with first electronic switch 12 by second fuse 25 of a correspondence; Above-mentioned steer motor 15 is 4, with wheel hub motor 11 corresponding settings, and is connected with the output of first power supply changeover device 14 respectively.
In the present embodiment, when first electronic switch, 12 closures, when being 11 discharges of 10 pairs of wheel hub motors of battery case, if there is short circuit phenomenon, to make wheel hub motor 11 corresponding second fuses 25 that connect because overcurrent fuses, thereby can prevent effectively further that battery case 10 from causing battery case blast and burning because of overcurrent in discharge process.
In addition, in order to prevent that battery case 10 to steer motor 15 power supplies and charging on-vehicle battery the time, because there being short circuit, causing battery case blast and burning.In the present embodiment, can be connected one the 3rd fuse 26 between the positive input terminal of first power supply changeover device 14 and second electronic switch 13, the positive input terminal of described second source transducer 20 is connected to the junction of the 3rd fuse 26 and second electronic switch 13 by one the 4th fuse 27.
Should be noted that to cause battery case blast and burning because electric current is excessive when preventing battery case 10 charging better, also the 5th fuse 28 can be set between the positive output end of the 3rd electronic switch 21 and charger 22 in the present embodiment.In the present embodiment, above-mentioned first electronic switch 12, second electronic switch 13, the 3rd electronic switch 21 and quadrielectron switch 23 all are preferably relay.
It below only is preferred 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 specification and accompanying drawing content to do; 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 (10)
1. a battery management system is characterized in that, comprises battery case, wheel hub motor, first electronic switch, second electronic switch, first power supply changeover device, steer motor and control chip, wherein,
Battery case is used for providing power supply;
First electronic switch, an end is connected with the positive output end of described battery case, and the other end is connected with the negative output terminal of battery case by wheel hub motor;
Second electronic switch, an end is connected with the positive output end of described battery case, and the other end is connected with the positive input terminal of first power supply changeover device, and the negative input end of this first power supply changeover device is connected with the negative input end of described battery case;
Steer motor is connected with the output of described first power supply changeover device;
Control chip is for the control chip of described first electronic switch of control and the second electronic switch operating state.
2. battery management system as claimed in claim 1, it is characterized in that, described battery management system also comprises for detection of the voltage of battery case and the battery management unit of temperature, this battery management unit is connected with described control chip, and will detect the voltage and the temperature data that obtain and be sent to control chip, control the operating state of described first electronic switch and second electronic switch for control chip.
3. battery management system as claimed in claim 2, it is characterized in that, described battery management system also comprises for the second source transducer for charging on-vehicle battery, the positive input terminal of this second source transducer is connected with the positive input terminal of described first power supply changeover device, and negative input end is connected with the negative input end of described first power supply changeover device; The output of described second source transducer is connected with the power input of described control chip and the power input of battery management unit respectively.
4. battery management system as claimed in claim 3, it is characterized in that, be connected one the 3rd fuse between the positive input terminal of described first power supply changeover device and second electronic switch, the positive input terminal of described second source transducer is connected to the junction of the 3rd fuse and second electronic switch by one the 4th fuse.
5. battery management system as claimed in claim 3 is characterized in that, described battery management system also comprises shunt and BHU, and this shunt is connected between the negative input end of battery case negative output terminal and first power supply changeover device; The input end of BHU is connected with described shunt, signal output part is connected with described control chip, be used for current measurement and insulating monitoring, and will measure the data that the current data that obtains and insulation detect and export control chip to, control the operating state of described first electronic switch and second electronic switch for control chip; The power input of described BHU is connected with the output of described second source transducer.
6. battery management system as claimed in claim 5, it is characterized in that, described battery management system also comprises the 3rd electronic switch and the charger adaptive with described battery case, wherein an end of the 3rd electronic switch is connected with the positive output end of described battery case, the positive output end of the charger of the other end connects, and the negative output terminal of this charger is connected with the negative output terminal of battery case by described shunt.
7. battery management system as claimed in claim 6 is characterized in that, described control chip is connected with described charger, and exports corresponding charge parameter to charger, to adjust charger to the charge parameter of battery case charging.
8. battery management system as claimed in claim 6, it is characterized in that, battery management system also comprises quadrielectron switch, and an end of this quadrielectron switch is connected with the positive output end of described battery case, and the other end is connected to the junction of first electronic switch and wheel hub motor.
9. battery management system as claimed in claim 8 is characterized in that, described quadrielectron switch also is in series with first fuse and first resistance between the junction of itself and wheel hub motor.
10. battery management system as claimed in claim 8 is characterized in that, described wheel hub motor is 4, and each wheel hub motor all is connected with described first electronic switch by second fuse of a correspondence; Described steer motor is 4, corresponding setting with wheel hub motor, and be connected with the output of described first power supply changeover device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201096110U CN203135504U (en) | 2013-03-11 | 2013-03-11 | Battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201096110U CN203135504U (en) | 2013-03-11 | 2013-03-11 | Battery management system |
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| CN203135504U true CN203135504U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201096110U Expired - Fee Related CN203135504U (en) | 2013-03-11 | 2013-03-11 | Battery management system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052086A (en) * | 2013-03-11 | 2014-09-17 | 深圳职业技术学院 | Battery management system |
| CN106671814A (en) * | 2016-12-29 | 2017-05-17 | 力帆实业(集团)股份有限公司 | Active safety protection system for power battery pack of electric automobile |
-
2013
- 2013-03-11 CN CN2013201096110U patent/CN203135504U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052086A (en) * | 2013-03-11 | 2014-09-17 | 深圳职业技术学院 | Battery management system |
| CN106671814A (en) * | 2016-12-29 | 2017-05-17 | 力帆实业(集团)股份有限公司 | Active safety protection system for power battery pack of electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140311 |