CN209240885U - Electric car auxiliary power unit - Google Patents

Electric car auxiliary power unit Download PDF

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Publication number
CN209240885U
CN209240885U CN201821100212.7U CN201821100212U CN209240885U CN 209240885 U CN209240885 U CN 209240885U CN 201821100212 U CN201821100212 U CN 201821100212U CN 209240885 U CN209240885 U CN 209240885U
Authority
CN
China
Prior art keywords
power supply
connect
battery
converter
accessory power
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.)
Expired - Fee Related
Application number
CN201821100212.7U
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Chinese (zh)
Inventor
王洋
方波
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.)
SUZHOU SHUNTANG NEW ENERGY ELECTRIC CONTROL EQUIPMENT CO Ltd
Original Assignee
SUZHOU SHUNTANG NEW ENERGY ELECTRIC CONTROL EQUIPMENT 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.)
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Publication date
Application filed by SUZHOU SHUNTANG NEW ENERGY ELECTRIC CONTROL EQUIPMENT CO Ltd filed Critical SUZHOU SHUNTANG NEW ENERGY ELECTRIC CONTROL EQUIPMENT CO Ltd
Priority to CN201821100212.7U priority Critical patent/CN209240885U/en
Application granted granted Critical
Publication of CN209240885U publication Critical patent/CN209240885U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model provides electric car auxiliary power unit, including DC/DC converter, accessory power supply, DC/DC converter input terminal is connect with high voltage power battery output, DC/DC converter output terminal is connect with battery, accessory power supply input terminal is connect with battery, and auxiliary power output end is connect with DC/DC converter.The utility model is by the way that the input terminal of accessory power supply to be connect with battery, realize that accessory power supply can be applied in the DC/DC converter of any input voltage range, realize directly to be battery management system power supply by charging pile, without increasing power conversion module, by the way that super capacitor is used in combination with boosting battery, so that high voltage power battery does not have to power in charging for vehicle device device and vehicle mounted electrical apparatus, it ensure that the performance of high voltage power battery, extend the service life of high voltage power battery.

Description

Electric car auxiliary power unit
Technical field
The utility model relates to technical field of automotive electronics more particularly to electric car auxiliary power units.
Background technique
With the rapid development of electric car, the requirement to high pressure DC/DC converter is also higher and higher, the wide input of high voltage Range using more and more, such as 200-700VDC, to high voltage direct current dcdc converter, more stringent requirements are proposed.In high voltage In the dcdc converter of wide input range, raising of the auxiliary source due to input voltage range, the power supply of conventional built-in switch pipe Control chip can not be applicable in;It is traditional in high input voltage using the switching tube or double-tube series of external higher voltage range Come meet high voltage input requirement, in wide input range sacrifice auxiliary source efficiency realize auxiliary source normal output, this Kind of mode the shortcomings that there are at high cost, control is complicated, low efficiency.And existing accessory power supply is 12V power supply, power-supply system is 24V system can not directly use the power supply power-supply system of charging pile when DC charging, and in braking, height presses electric car Power battery pack should charge and power again for car-mounted device and vehicle mounted electrical apparatus, influence high voltage power battery performance and service life.
Utility model content
The utility model is based at least one above-mentioned technical problem, proposes electric car auxiliary power unit, leads to It crosses and connect the input terminal of accessory power supply with battery, realize that accessory power supply can apply the DC/ in any input voltage range In DC converter.
In order to achieve the above objectives, the utility model provides electric car auxiliary power unit, including DC/DC converter, auxiliary Help power supply, the DC/DC converter input terminal is connect with high voltage power battery output, the DC/DC converter output terminal with Battery connection, the accessory power supply input terminal are connect with the battery, and the auxiliary power output end and the DC/DC become Parallel operation connection.
It further, further include battery management system, the battery management system is become by the channel CAN and the DC/DC Parallel operation connection, is connect by contactor with the accessory power supply, and the contactor is connect with Vehicular direct-current power supply, described vehicle-mounted straight Galvanic electricity source is connect with the DC/DC converter, and the battery management system control D.C. contactor changes DC/DC converter and institute State the on off operating mode between high voltage power battery.
It further, further include high direct voltage output module, the high direct voltage output module includes hub motor and surpasses Grade capacitor, one end of the super capacitor are connect with the hub motor, and the other end of the super capacitor and the DC/DC become The connection of parallel operation input terminal.
Further, further include vehicle device device and vehicle mounted electrical apparatus, the DC/DC converter output terminal respectively with the vehicle device Device is connected with the vehicle mounted electrical apparatus, and the accessory power supply is connect with the vehicle device device and the vehicle mounted electrical apparatus respectively.
Further, the hub motor be embedded in front-wheel and or rear-wheel in, the super capacitor is located at the wheel The inside of hub motor.
Further, the accessory power supply is connected to the contactor coil both ends, one end of the contactless contactor with The power input of the battery management system connects, and the other end of the switch is connect with the anode of vehicle-mounted low-tension supply, DC/ The anode of DC converter output terminal is connect with the anode of the vehicle-mounted low-tension supply.
Further, the D.C. contactor is pressed with the anode of the DC/DC converter input terminal and the height respectively The anode connection of power battery.
Further, the accessory power supply is ferric phosphate lithium cell.
Further, the accessory power supply includes isolated accessory power supply and non-isolated accessory power supply.
Further, the accessory power supply includes inverse-excitation type accessory power supply, positive activation type accessory power supply, Fly-Buck formula auxiliary Power supply.
Compared with prior art, the advantage of the utility model is: the utility model provides electric car accessory power supply dress It sets, including DC/DC converter, accessory power supply, DC/DC converter input terminal is connect with high voltage power battery output, and DC/DC becomes Parallel operation output end is connect with battery, and accessory power supply input terminal is connect with battery, auxiliary power output end and DC/DC converter Connection.The utility model realizes that accessory power supply can be applied any by the way that the input terminal of accessory power supply to be connect with battery In the DC/DC converter of input voltage range, realize directly to be battery management system power supply by charging pile, without increasing power supply Conversion module prevents vehicle-mounted low-tension supply power shortage, reduces cost, by the way that super capacitor to be used in combination with boosting battery, will make The raw induced potential of movable property is that super capacitor charges, and is to assist power source charges by super capacitor or is vehicle device device and vehicle mounted electric Device power supply, in braking, accessory power supply is that vehicle device device and vehicle mounted electrical apparatus are powered, so that high voltage power battery does not have in charging It powers for vehicle device device and vehicle mounted electrical apparatus, ensure that the performance of high voltage power battery, extend high voltage power battery uses the longevity Life.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
It is described in further detail with reference to the accompanying drawing with the embodiments of the present invention.
Fig. 1 is the electric car auxiliary power unit structural schematic diagram one of the utility model;
Fig. 2 is the electric car auxiliary power unit structural schematic diagram two of the utility model;
Fig. 3 is the electric car auxiliary power unit structural schematic diagram three of the utility model.
Specific embodiment
Understand to remove the purpose of this utility model, technical solution and advantage more, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain this Utility model is not used to limit the utility model.
Electric car auxiliary power unit, as shown in Figure 1, including DC/DC converter, accessory power supply, DC/DC converter is defeated Enter end to connect with high voltage power battery output, DC/DC converter output terminal is connect with battery, accessory power supply input terminal and storage Battery connection, auxiliary power output end are connect with DC/DC converter.Due to the particularity of DC/DC converter applications, DC/DC becomes The output end of parallel operation often connects on the battery of 12V or 24V, using accessory power supply input terminal from the output end of DC/DC converter Electricity is taken, so that the input voltage of accessory power supply becomes 12V (9-16V range) or 24V (18-32V), is realized using conventional auxiliary Source implementation, such as flyback converter or using low voltage DC/DC conversion chip, control simply, conveniently, solves conventional DC/ The accessory power supply of DC converter switching tube in high voltage wide input range is not easy type selecting, control complexity, problem at high cost, auxiliary It helps the work of power supply unrelated with the input voltage of DC/DC converter, is not limited by input voltage range, enable accessory power supply It enough applies in any vehicle-mounted DC/DC converter, at low cost, high reliablity.Preferably, accessory power supply is ferric phosphate lithium cell. Preferably, accessory power supply includes isolated accessory power supply and non-isolated accessory power supply.Preferably, accessory power supply includes inverse-excitation type Accessory power supply, positive activation type accessory power supply, Fly-Buck formula accessory power supply.
As shown in Figure 2, it is preferred that further include battery management system, battery management system is become by the channel CAN and DC/DC Parallel operation connection, is connect by contactor with accessory power supply, contactor is connect with Vehicular direct-current power supply, Vehicular direct-current power supply and DC/ The connection of DC converter, battery management system control D.C. contactor and change leading between DC/DC converter and high voltage power battery Disconnected state.Preferably, accessory power supply is connected to contactor coil both ends, one end of contactless contactor and the electricity of battery management system The connection of source input terminal, the other end of switch are connect with the anode of vehicle-mounted low-tension supply, the anode and vehicle of DC/DC converter output terminal Carry the anode connection of low-tension supply.Preferably, the D.C. contactor anode and high voltage power with DC/DC converter input terminal respectively The anode connection of battery.It realizes directly to be battery management system power supply by charging pile, without increasing power conversion module, prevents Vehicle-mounted low-tension supply power shortage, reduces cost.
As shown in Figure 3, it is preferred that further include high direct voltage output module, high direct voltage output module includes hub motor And super capacitor, one end of super capacitor are connect with hub motor, the other end and DC/DC converter input terminal of super capacitor connect It connects.Preferably, further include vehicle device device and vehicle mounted electrical apparatus, DC/DC converter output terminal respectively with vehicle device device and vehicle mounted electrical apparatus Connection, accessory power supply are connect with vehicle device device and vehicle mounted electrical apparatus respectively.Preferably, hub motor be embedded in front-wheel and or after In wheel, super capacitor is located at the inside of hub motor.By the way that super capacitor to be used in combination with boosting battery, braking is generated Induced potential is super capacitor charging, is auxiliary power source charges by super capacitor or is that vehicle device device and vehicle mounted electrical apparatus are powered, In braking, accessory power supply is that vehicle device device and vehicle mounted electrical apparatus are powered, so that high voltage power battery does not have to be vehicle device in charging Device and vehicle mounted electrical apparatus power supply, ensure that the performance of high voltage power battery, extend the service life of high voltage power battery.
The utility model provides electric car auxiliary power unit, including DC/DC converter, accessory power supply, DC/DC transformation Device input terminal is connect with high voltage power battery output, and DC/DC converter output terminal is connect with battery, accessory power supply input terminal It is connect with battery, auxiliary power output end is connect with DC/DC converter.The utility model is by by the input terminal of accessory power supply It is connect with battery, realizes that accessory power supply can be applied in the DC/DC converter of any input voltage range, realized directly logical Overcharge stake is battery management system power supply, without increasing power conversion module, prevents vehicle-mounted low-tension supply power shortage, reduce at This, by the way that super capacitor to be used in combination with boosting battery, the induced potential that braking is generated is super capacitor charging, by super Grade capacitor be auxiliary power source charges or be vehicle device device and vehicle mounted electrical apparatus power supply, braking when, accessory power supply be vehicle device device and Vehicle mounted electrical apparatus power supply ensure that high pressure so that high voltage power battery does not have to power in charging for vehicle device device and vehicle mounted electrical apparatus The performance of power battery extends the service life of high voltage power battery.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (7)

1. electric car auxiliary power unit, it is characterised in that: including DC/DC converter, accessory power supply, the DC/DC transformation Device input terminal is connect with high voltage power battery output, and the DC/DC converter output terminal is connect with battery, the auxiliary electricity Source input terminal is connect with the battery, and the auxiliary power output end is connect with the DC/DC converter;It further include cell tube Reason system, the battery management system are connect by the channel CAN with the DC/DC converter, and contactor and the auxiliary are passed through Power supply connection, the contactor are connect with Vehicular direct-current power supply, and the Vehicular direct-current power supply is connect with the DC/DC converter, The battery management system control D.C. contactor changes the on-off shape between DC/DC converter and the high voltage power battery State;The accessory power supply is connected to the contactor coil both ends, one end of the contactless contactor and the battery management system The power input of system connects, and the other end of the switch is connect with the anode of vehicle-mounted low-tension supply, DC/DC converter output terminal Anode connect with the positive of the vehicle-mounted low-tension supply;D.C. contactor respectively with the DC/DC converter input terminal just The anode connection of pole and the high voltage power battery.
2. electric car auxiliary power unit as described in claim 1, it is characterised in that: further include high direct voltage output mould Block, the high direct voltage output module include hub motor and super capacitor, and one end of the super capacitor and the wheel hub are electric Machine connection, the other end of the super capacitor are connect with the DC/DC converter input terminal.
3. electric car auxiliary power unit as claimed in claim 2, it is characterised in that: further include vehicle device device and vehicle mounted electric Device, the DC/DC converter output terminal are connect with the vehicle device device and the vehicle mounted electrical apparatus respectively, the accessory power supply difference It is connect with the vehicle device device and the vehicle mounted electrical apparatus.
4. electric car auxiliary power unit as claimed in claim 2, it is characterised in that: the hub motor is embedded in front-wheel With or or rear-wheel in, the super capacitor is located at the inside of the hub motor.
5. electric car auxiliary power unit as described in claim 1, it is characterised in that: the accessory power supply is LiFePO4 Battery.
6. electric car auxiliary power unit as described in claim 1, it is characterised in that: the accessory power supply includes isolated Accessory power supply and non-isolated accessory power supply.
7. electric car auxiliary power unit as described in claim 1, it is characterised in that: the accessory power supply includes inverse-excitation type Accessory power supply, positive activation type accessory power supply, Fly-Buck formula accessory power supply.
CN201821100212.7U 2018-07-12 2018-07-12 Electric car auxiliary power unit Expired - Fee Related CN209240885U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821100212.7U CN209240885U (en) 2018-07-12 2018-07-12 Electric car auxiliary power unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821100212.7U CN209240885U (en) 2018-07-12 2018-07-12 Electric car auxiliary power unit

Publications (1)

Publication Number Publication Date
CN209240885U true CN209240885U (en) 2019-08-13

Family

ID=67516844

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821100212.7U Expired - Fee Related CN209240885U (en) 2018-07-12 2018-07-12 Electric car auxiliary power unit

Country Status (1)

Country Link
CN (1) CN209240885U (en)

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GR01 Patent grant
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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190813

Termination date: 20200712