CN105564261B - The power supply unit and method of electric vehicle - Google Patents
The power supply unit and method of electric vehicle Download PDFInfo
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- CN105564261B CN105564261B CN201610007179.2A CN201610007179A CN105564261B CN 105564261 B CN105564261 B CN 105564261B CN 201610007179 A CN201610007179 A CN 201610007179A CN 105564261 B CN105564261 B CN 105564261B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005611 electricity Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000007812 deficiency Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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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
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
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- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of power supply unit of electric vehicle and method, which includes：High power type battery and high-energy type battery；Control unit, the output power of the driving motor for detecting electric vehicle control high power type battery and high-energy type battery discharge simultaneously when the output power for detecting driving motor is within the scope of the first predetermined power；When the output power for detecting driving motor is within the scope of the second predetermined power, control high power type battery individually discharges；When the output power for detecting driving motor is within the scope of third predetermined power or electric vehicle drives at a constant speed, control high-energy type battery individually discharges；The minimum value of first predetermined power range is greater than the maximum value of the second predetermined power range and the maximum value of third predetermined power range, and the minimum value of the second predetermined power range is greater than the maximum value of the first predetermined power range.Above-mentioned technical proposal, while improving the dynamic property and course continuation mileage number of electric vehicle.
Description
Technical field
The present invention relates to electric vehicle technical fields, and in particular, to a kind of power supply unit and method of electric vehicle.
Background technique
Currently, many electric vehicles all use power resources and energy storage device of the high-tension battery as vehicle.Most of electricity
Dynamic vehicle high-voltage battery all uses high-energy type or high power type battery, wherein the electric discharge times with higher of high-energy type battery
Rate.High power type respectively has higher energy density.The battery of electric vehicles is generally divided into both direction, high power type battery and
High-energy type battery.However, above two battery respectively has advantage and disadvantage, specifically, in the case where same battery pack volume：It is high
Power type battery discharge-rate with higher can make vehicle have preferable dynamic property, but can make since energy density is lower
The course continuation mileage number of vehicle is relatively low；And high-energy type battery energy density with higher, it can make vehicle that there is preferable continuation of the journey
Mileage number, but since discharge-rate is lower, the power performance so as to cause vehicle is relatively low.In the feelings of identical battery pack volume
Under condition, high power type battery or selection high-energy type battery no matter are selected, is impossible to that there is high power type battery simultaneously
The high-energy density of high-discharge-rate and high-energy type battery.
Summary of the invention
The present invention provides a kind of power supply units of electric vehicle, to improve the dynamic property and continuation of the journey of electric vehicle simultaneously
Mileage number, the power supply unit include：
High power type battery and high-energy type battery；
Control unit is connect, for detecting with the driving motor of high power type battery, high-energy type battery and electric vehicle
The output power of the driving motor of electric vehicle, in the output power for detecting driving motor within the scope of the first predetermined power
When, it controls high power type battery and high-energy type battery discharges simultaneously；It is pre- second in the output power for detecting driving motor
If when in power bracket, control high power type battery individually discharges；It is default in third in the output power for detecting driving motor
In power bracket or when electric vehicle drives at a constant speed, control high-energy type battery individually discharges；
The minimum value of first predetermined power range is greater than the maximum value and third predetermined power model of the second predetermined power range
The maximum value enclosed, the minimum value of the second predetermined power range are greater than the maximum value of third predetermined power range.
Based on the same inventive concept, the present invention also provides a kind of method of supplying power to of electric vehicle, to improve electricity simultaneously
The dynamic property and course continuation mileage number of motor-car, the method for supplying power to include：
Detect the output power of the driving motor of electric vehicle；
When the output power for detecting driving motor is within the scope of the first predetermined power, high power type battery and height are controlled
Energy-type cells discharge simultaneously；
When the output power for detecting driving motor is within the scope of the second predetermined power, control high power type battery is independent
Electric discharge；
When the output power for detecting driving motor is within the scope of third predetermined power or electric vehicle drives at a constant speed, control
High-energy type battery processed individually discharges；
The minimum value of first predetermined power range is greater than the maximum value and third predetermined power model of the second predetermined power range
The maximum value enclosed, the minimum value of the second predetermined power range are greater than the maximum value of third predetermined power range.
Technical solution provided by the invention, the output power of the driving motor by detecting electric vehicle, drives detecting
When the output power of dynamic motor is within the scope of the first predetermined power, controls high power type battery and high-energy type battery is put simultaneously
When electricity, i.e. electric vehicle are very high to power demand, control high power type battery and high-energy type battery discharges simultaneously, to make
Electric vehicle has relatively high dynamic property；When the output power for detecting driving motor is within the scope of the second predetermined power,
Control high power type battery individually discharges, i.e., when electric vehicle is not very high to power demand, controls high power type battery
Electric discharge, to meet the general power demand of electric vehicle；In the output power for detecting driving motor in third predetermined power model
In enclosing or when electric vehicle drives at a constant speed, control high-energy type battery individually discharges, i.e., not high to power demand in electric vehicle
Or electric vehicle controls high-energy type battery discharge, meets the demand of the long-play of vehicle when driving at a constant speed.Therefore, on
It states technical solution while having used high power type battery and high-energy type battery, in the volume of same battery packet, simultaneously
The characteristics of high power type battery and high-energy type battery for having, in vehicle under different operating conditions, control high power type electricity
The characteristics of pond and high-energy type battery, all brings into play, protects the service life of battery, prevents high-energy type battery high power discharge,
Also the lower energy density of high power type battery is solved, to the deficiency of vehicle bring course continuation mileage, in same battery backpack body product
In the case where, the dynamic property and course continuation mileage of electric vehicle can be improved simultaneously by not increasing battery pack volume.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not
Constitute limitation of the invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the power supply unit of electric vehicle in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the power supply unit of electric vehicle in further embodiment of this invention；
Fig. 3 is the flow diagram of the method for supplying power to of electric vehicle in the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right below with reference to embodiment and attached drawing
The present invention is described in further details.Here, exemplary embodiment and its explanation of the invention is used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
Fig. 1 is the structural schematic diagram of the power supply unit of electric vehicle in the embodiment of the present invention, as shown in Figure 1, this is for Denso
Set including：
High power type battery 10 and high-energy type battery 20；
Control unit 30 is connect with the driving motor 40 of high power type battery 10, high-energy type battery 20 and electric vehicle,
It is default first in the output power for detecting driving motor 40 for detecting the output power of the driving motor 40 of electric vehicle
When in power bracket, controls high power type battery 10 and high-energy type battery 20 discharges simultaneously；Detecting driving motor 40
When output power is within the scope of the second predetermined power, control high power type battery 10 individually discharges；Detecting driving motor 40
Output power within the scope of third predetermined power or when electric vehicle drives at a constant speed, control high-energy type battery 20 individually puts
Electricity；
The minimum value of first predetermined power range is greater than the maximum value and third predetermined power model of the second predetermined power range
The maximum value enclosed, the minimum value of the second predetermined power range are greater than the maximum value of third predetermined power range.
Technical solution provided in an embodiment of the present invention when work, passes through the output work of the driving motor of detection electric vehicle
Rate controls high power type battery 10 and height when the output power for detecting driving motor 40 is within the scope of the first predetermined power
Energy-type cells 20 discharge simultaneously, i.e., when electric vehicle is very high to power demand, control high power type battery 10 and high energy
Amount type battery 20 discharges simultaneously, to make electric vehicle have relatively high dynamic property；In the output work for detecting driving motor 40
When rate is within the scope of the second predetermined power, control high power type battery 10 individually discharges, i.e., electric vehicle is not to power demand
When very high, control high power type battery 10 discharges, to meet the general power demand of electric vehicle；Detecting driving electricity
For the output power of machine 40 within the scope of third predetermined power or when electric vehicle drives at a constant speed, control high-energy type battery 20 is independent
Electric discharge, i.e., not high to power demand or when electric vehicle drives at a constant speed in electric vehicle, control high-energy type battery 20 discharges, full
The demand of the long-play of sufficient vehicle.Therefore, above-mentioned technical proposal has used high power type battery and high-energy type electricity simultaneously
Pond, in the volume of same battery packet, while have high power type battery and high-energy type battery the characteristics of, in vehicle
Under different operating conditions, controls high power type battery and the characteristics of high-energy type battery all brings into play, protect battery
Service life prevents high-energy type battery high power discharge, also solves the lower energy density of high power type battery, gives vehicle bring
The deficiency of course continuation mileage, in the case where same battery backpack body product, electric vehicle can be improved simultaneously by not increasing battery pack volume
Dynamic property and course continuation mileage.
When it is implemented, above-mentioned first predetermined power range, the second predetermined power range and third predetermined power range can
To be user according to the actual use demand of oneself and the performance of electric vehicle, preset power bracket.
When it is implemented, electric vehicle provided in an embodiment of the present invention can be electric bicycle, electric car and new energy
Source automobile etc..
When it is implemented, the output power that control unit 30 detects the driving motor 40 of electric vehicle is to pass through driving motor
Torque and revolving speed product.When driver steps on the throttle that time, control unit 30 begins to detection driving motor at that time
Torque and revolving speed.
When it is implemented, control unit 30 can be entire car controller in the embodiment of the present invention.Control unit 30 can be made
For a unit of entire car controller.Certainly, control unit 30 can be with independent unit, connect with entire car controller, with
High power type battery can be arranged together with high-energy type cell package according to the actual needs of user.
In one embodiment, the power supply unit of electric vehicle provided in an embodiment of the present invention can also include：
First switch is connect with the anode 11 of entire car controller 30, drive motor controller 50 and high power type battery；
Second switch is connect with the cathode 12 of entire car controller 30, drive motor controller 50 and high power type battery；
Third switch, connect with the anode 21 of entire car controller 30, drive motor controller 50 and high-energy type battery；
4th switch, connect with the cathode 22 of entire car controller 30, drive motor controller 50 and high-energy type battery；
Entire car controller 30 specifically can be used for：In the output power for detecting driving motor in the first predetermined power range
When interior, control first switch, second switch, third switch and the 4th switch is closed at, high power type battery and high-energy type
Battery discharges simultaneously；When the output power for detecting driving motor is within the scope of the second predetermined power, control first switch and
Second switch is closed at, and control third switch and the 4th switch disconnect, and high power type battery individually discharges；Detecting driving
The output power of motor controls first switch and the second switch within the scope of third predetermined power or when electric vehicle drives at a constant speed
It disconnects, control third switch and the 4th switch are closed at, and high-energy type battery individually discharges.
When it is implemented, first switch, second switch, third switch and the 4th switch can pass through the driving of electric vehicle
Electric machine controller 50 is connect with driving motor 40.
Fig. 2 is the structural schematic diagram of the power supply unit of electric vehicle in further embodiment of this invention, as shown in Fig. 2, above-mentioned
First switch can be the first high-voltage relay 60, and above-mentioned second switch can be the second high-voltage relay 70, and above-mentioned third is opened
Closing can be third high-voltage relay 80, and above-mentioned 4th switch can be the 4th high-voltage relay 90.
When it is implemented, as shown in Fig. 2, electric vehicle work normally when, according to the different driving mode of driver
To use different control strategies to two groups of battery packs (high power type battery 10 and high-energy type battery 20).Specifically, pass through
Entire car controller 30 may determine that driver needs power performance, when driver is very high to power performance demand,
Entire car controller 30 control the first high-voltage relay 60, the second high-voltage relay 70, third high-voltage relay 80, the 4th high pressure after
Electric appliance 90 is closed at, using the mode of two groups of battery pack parallel outputs, to make vehicle dynamic property with higher, driving motor
It can be exported with peak rate；Driver to power performance demand is not very high when, the control of entire car controller 30 is first high
Potential relay 60, the second high-voltage relay 70 closure, are only discharged by high power type battery 10, meet the dynamic property need of vehicle
It asks；Not high to power performance demand or when vehicle drives at a constant speed in driver, it is high that entire car controller 30 controls third
Potential relay 80, the 4th high-voltage relay 90 closure, are only exported by high-energy type battery 20, meet vehicle long-play
Demand.
When it is implemented, above-mentioned first switch, second switch, third switch and the 4th switch select high-voltage relay, side
Just accurate control, naturally it is also possible to select other kinds of device as switch.
Based on the same inventive concept, a kind of method of supplying power to of electric vehicle is additionally provided in the embodiment of the present invention, it is such as following
Embodiment described in.Since the principle of the method for supplying power to problem of electric vehicle is similar to the power supply unit of electric vehicle, electricity
The implementation of the method for supplying power to of motor-car may refer to the implementation of the power supply unit of electric vehicle, and overlaps will not be repeated.Below
Used, the combination of the software and/or hardware of predetermined function may be implemented in term " unit " or " module ".Although following real
Apply device described in example and preferably realized with software, but the combined realization of hardware or software and hardware be also can
It can and be contemplated.
Fig. 3 is the flow diagram of the method for supplying power to of electric vehicle in the embodiment of the present invention, as shown in figure 3, the supplier of electricity
Method includes the following steps：
Step 101：Detect the output power of the driving motor of electric vehicle；
Step 102：When the output power for detecting driving motor is within the scope of the first predetermined power, high power type is controlled
Battery and high-energy type battery discharge simultaneously；
Step 103：When the output power for detecting driving motor is within the scope of the second predetermined power, high power type is controlled
Battery individually discharges；
Step 104：The output power for detecting driving motor within the scope of third predetermined power or electric vehicle at the uniform velocity
When driving, control high-energy type battery individually discharges；
The minimum value of first predetermined power range is greater than the maximum value and third predetermined power model of the second predetermined power range
The maximum value enclosed, the minimum value of the second predetermined power range are greater than the maximum value of third predetermined power range.
In an example, above-mentioned steps 102 can specifically include：In the output power for detecting driving motor first
When within the scope of predetermined power, controls the first switch, second switch, third switch and the 4th switch is closed at, high power
Type battery and high-energy type battery discharge simultaneously；
Above-mentioned steps 103 can specifically include：In the output power for detecting driving motor in the second predetermined power range
It when interior, control the first switch and the second switch and is closed at, control third switch and the 4th switch disconnect, high power type electricity
It individually discharges in pond；
Above-mentioned steps 104 can specifically include：In the output power for detecting driving motor in third predetermined power range
It when interior or electric vehicle drives at a constant speed, controls the first switch and the second switch and disconnects, control the third switch and the 4th
Switch is closed at, and high-energy type battery individually discharges；
First switch is connect with the anode of the entire car controller, drive motor controller and high power type battery；
Second switch is connect with the cathode of the entire car controller, drive motor controller and high power type battery；
Third switch is connect with the anode of the entire car controller, drive motor controller and high-energy type battery；
4th switch, connect with the cathode of the entire car controller, drive motor controller and high-energy type battery.
In one embodiment, first switch can be the first high-voltage relay, second switch can for the second high pressure after
Electric appliance, the third switch can be third high-voltage relay, and the 4th switch can be the 4th high-voltage relay.
Compared with prior art, the power supply unit of electric vehicle provided in an embodiment of the present invention, according to power-type and energy
Amount type battery pack carries out two groups of topological structures in parallel, and when output power is especially big, two groups of batteries discharge simultaneously；Output power compared with
When big, power type battery electric discharge；When vehicle drives at a constant speed or output power is smaller and even running, energy-type cells are put
Electricity.Control by controller to four high-voltage relays, to coordinate the operating mode of two different batteries.
In conclusion the advantageous effects of technical solution provided in an embodiment of the present invention are as follows：
The power supply unit and method of supplying power to of the high pressure topological structure provided through the embodiment of the present invention, electric vehicle make simultaneously
With high power type battery and high-energy type battery, in the volume of same battery packet, while the high power type having is electric
The characteristics of pond and high-energy type battery, in electric vehicle under different operating conditions, entire car controller come control four high pressures after
Electric appliance is attracted and disconnects, so that the characteristics of high power type battery and high-energy type battery all be brought into play, protects battery
Service life prevents high-energy type battery high power discharge, also solves the lower energy density of high power type battery and gives vehicle bring
The deficiency of course continuation mileage.Same battery backpack body product in the case where, can make without it will increase battery pack volume vehicle have compared with
Good dynamic property and preferable course continuation mileage.The change for only increasing by two high-voltage relays and corresponding harness, to existing electric vehicle
Structure will not generate larger change, and cost is relatively low, improve to the performance of vehicle larger.
By many experiments of inventor, the experimental results showed that：The same battery pack volume and identical road conditions the case where
Under, using the battery of high pressure topological structure provided in an embodiment of the present invention, the vehicle than only using high power type battery is more
Course continuation mileage, the vehicle than only using high-energy type battery have better power performance, and the invention has preferable market to answer
Use prospect.
Obviously, those skilled in the art should be understood that each module, device or each step of the above-mentioned embodiment of the present invention
It can be realized with general computing device, they can be concentrated on a single computing device, or be distributed in multiple calculating
On network composed by device, optionally, they can be realized with the program code that computing device can perform, it is thus possible to
It is stored in storage device and is performed by computing device, and in some cases, it can be to be different from herein suitable
Sequence executes shown or described step, and perhaps they are fabricated to each integrated circuit modules or will be in them
Multiple modules or step are fabricated to single integrated circuit module to realize.In this way, the embodiment of the present invention be not limited to it is any specific
Hardware and software combine.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (6)
1. a kind of power supply unit of electric vehicle, which is characterized in that including：
High power type battery and high-energy type battery；
Control unit is connect, for detecting with the driving motor of the high power type battery, high-energy type battery and electric vehicle
The output power of the driving motor of electric vehicle, in the output power for detecting driving motor within the scope of the first predetermined power
When, it controls the high power type battery and high-energy type battery while discharging；In the output power for detecting driving motor
When within the scope of two predetermined powers, controls the high power type battery and individually discharge；Exist in the output power for detecting driving motor
Within the scope of third predetermined power or when electric vehicle drives at a constant speed, controls the high-energy type battery and individually discharge；
The minimum value of the first predetermined power range is greater than the maximum value of the second predetermined power range and third presets function
The maximum value of rate range, the minimum value of the second predetermined power range are greater than the maximum value of the third predetermined power range；
The output power of the driving motor of control unit detection electric vehicle is the product of torque and revolving speed by driving motor；
First predetermined power range, the second predetermined power range and third predetermined power range are that user actually makes according to oneself
With the performance of demand and electric vehicle, preset power bracket；
Control unit is entire car controller；An or unit of the control unit as entire car controller；Or control unit is
Independent unit, connect with entire car controller, together with high power type battery and high-energy type cell package, according to user
Actual needs be arranged.
2. the power supply unit of electric vehicle as described in claim 1, which is characterized in that further include：
First switch is connect with the anode of the entire car controller, drive motor controller and high power type battery；
Second switch is connect with the cathode of the entire car controller, drive motor controller and high power type battery；
Third switch is connect with the anode of the entire car controller, drive motor controller and high-energy type battery；
4th switch, connect with the cathode of the entire car controller, drive motor controller and high-energy type battery；
The entire car controller is specifically used for：When the output power for detecting driving motor is within the scope of the first predetermined power,
It controls the first switch, second switch, third switch and the 4th switch is closed at, high power type battery and high-energy type electricity
It discharges simultaneously in pond；When the output power for detecting driving motor is within the scope of the second predetermined power, the first switch is controlled
It is closed at second switch, controls the third switch and the 4th switch disconnects, high power type battery individually discharges；It is detecting
To the output power within the scope of third predetermined power or when electric vehicle drives at a constant speed of driving motor, the first switch is controlled
It is disconnected with second switch, controls the third switch and the 4th switch is closed at, high-energy type battery individually discharges.
3. the power supply unit of electric vehicle as claimed in claim 2, which is characterized in that
The first switch is the first high-voltage relay, and the second switch is the second high-voltage relay, and the third switch is
Third high-voltage relay, the 4th switch is the 4th high-voltage relay.
4. a kind of method of supplying power to of electric vehicle, which is characterized in that including：
Detect the output power of the driving motor of electric vehicle；
When the output power for detecting driving motor is within the scope of the first predetermined power, high power type battery and high-energy are controlled
Type battery discharges simultaneously；
When the output power for detecting driving motor is within the scope of the second predetermined power, control high power type battery is individually put
Electricity；
When the output power for detecting driving motor is within the scope of third predetermined power or electric vehicle drives at a constant speed, control is high
Energy-type cells individually discharge；
The minimum value of the first predetermined power range is greater than the maximum value of the second predetermined power range and third presets function
The maximum value of rate range, the minimum value of the second predetermined power range are greater than the maximum value of the third predetermined power range；
The output power for detecting the driving motor of electric vehicle is the product of torque and revolving speed by driving motor；
First predetermined power range, the second predetermined power range and third predetermined power range are that user actually makes according to oneself
With the performance of demand and electric vehicle, preset power bracket；
The method of supplying power to of the electric vehicle is realized that control unit is entire car controller by control unit；Or control unit is made
For a unit of entire car controller；Or control unit is independent unit, is connect with entire car controller, with high power type electricity
Pond is arranged together with high-energy type cell package according to the actual needs of user.
5. the method for supplying power to of electric vehicle as claimed in claim 4, which is characterized in that
When the output power for detecting driving motor is within the scope of the first predetermined power, high power type battery and high-energy are controlled
Type battery discharges simultaneously, including：When the output power for detecting driving motor is within the scope of the first predetermined power, control first
Switch, second switch, third switch and the 4th switch are closed at, and high power type battery and high-energy type battery discharge simultaneously；
When the output power for detecting driving motor is within the scope of the second predetermined power, control high power type battery is individually put
Electricity, including：When the output power for detecting driving motor is within the scope of the second predetermined power, the first switch and are controlled
Two switches are closed at, and control third switch and the 4th switch disconnect, and high power type battery individually discharges；
When the output power for detecting driving motor is within the scope of third predetermined power or electric vehicle drives at a constant speed, control is high
Energy-type cells individually discharge, including：It is within the scope of third predetermined power or electronic in the output power for detecting driving motor
It when vehicle drives at a constant speed, controls the first switch and the second switch and disconnects, control the third switch and the 4th switch simultaneously
Closure, high-energy type battery individually discharge；
First switch is connect with the anode of the entire car controller, drive motor controller and high power type battery；
Second switch is connect with the cathode of the entire car controller, drive motor controller and high power type battery；
Third switch is connect with the anode of the entire car controller, drive motor controller and high-energy type battery；
4th switch, connect with the cathode of the entire car controller, drive motor controller and high-energy type battery.
6. the method for supplying power to of electric vehicle as claimed in claim 5, which is characterized in that
The first switch is the first high-voltage relay, and the second switch is the second high-voltage relay, and the third switch is
Third high-voltage relay, the 4th switch is the 4th high-voltage relay.
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| CN201610007179.2A CN105564261B (en) | 2016-01-06 | 2016-01-06 | The power supply unit and method of electric vehicle |
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| CN201610007179.2A CN105564261B (en) | 2016-01-06 | 2016-01-06 | The power supply unit and method of electric vehicle |
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| DE102016220089A1 (en) * | 2016-10-14 | 2018-04-19 | Robert Bosch Gmbh | Method, machine-readable storage medium and electronic control unit for operating an electrical energy storage system and corresponding electrical energy storage system |
| US10434894B2 (en) * | 2018-01-23 | 2019-10-08 | Gm Global Technology Operations Llc. | Vehicle battery pack assembly |
| CN108437835B (en) * | 2018-04-24 | 2023-11-28 | 湖州宏威新能源汽车有限公司 | Power supply system |
| CN113733976B (en) * | 2021-08-06 | 2023-05-09 | 岚图汽车科技有限公司 | A battery pack and its control method |
| CN115891684B (en) * | 2021-09-30 | 2025-03-21 | 比亚迪股份有限公司 | Battery pack and automobile |
| CN117200369A (en) * | 2022-05-31 | 2023-12-08 | 比亚迪股份有限公司 | Power supply device |
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| CN1433906A (en) * | 2002-01-20 | 2003-08-06 | 顾晓青 | Fuel accumulator supply system for electric vehicle |
| CN1187208C (en) * | 2003-08-27 | 2005-02-02 | 西安交通大学 | Supercapacitance assistant power supply system of electric vehicle |
| JP2013049381A (en) * | 2011-08-31 | 2013-03-14 | Toyota Motor Corp | Control device for hybrid vehicle |
| CN103612569B (en) * | 2013-06-08 | 2016-06-15 | 苏州市莱赛电车技术有限公司 | A kind of electric vehicle power-supply system |
| CN103507654A (en) * | 2013-07-18 | 2014-01-15 | 苏州市莱赛电车技术有限公司 | Power supply system for electric vehicle |
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