CN107054260A - A kind of accumulator control method, system and electric automobile - Google Patents
A kind of accumulator control method, system and electric automobile Download PDFInfo
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- CN107054260A CN107054260A CN201710270402.7A CN201710270402A CN107054260A CN 107054260 A CN107054260 A CN 107054260A CN 201710270402 A CN201710270402 A CN 201710270402A CN 107054260 A CN107054260 A CN 107054260A
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- tension battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a kind of accumulator control method, system and electric automobile.Wherein, the accumulator control method includes：Obtain the magnitude of voltage for the first low tension battery being connected with entire car controller；When the magnitude of voltage of first low tension battery is less than the first preset voltage value, control first low tension battery to stop pair power supply for electrical equipment being connected with first low tension battery, and control the second low tension battery being connected with the entire car controller to be powered the electrical equipment.Above-mentioned technical proposal, using double batteries, when power shortage situation occurs in one of battery, enables another battery to power supply for electrical equipment, so as to ensure the normal startup of electric automobile and in-car electrical equipment normal work.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of accumulator control method, system and electric automobile.
Background technology
In recent years, people increasingly increase the concern saved with environmental protection, and then promote new-energy automobile to enter quick hair
The track of exhibition.At present, electric vehicle engineering relative maturity, and the electric automobile not pernicious gas of exhaust emission air in itself,
Even if being scaled by institute's power consumption outside the discharge in power plant, sulphur removal and particulate, other pollutants are also substantially reduced.Because power plant is big
It is be built in away from densely populated city more, less are injured to the mankind, and also power plant is fixed, the discharge and removing of concentration
Various noxious emissions are easier to, and also there has been correlation technique.In addition, electric power can be obtained from a variety of primary energy, such as coal, core
Energy, waterpower, wind-force, light, heat etc., release people to the day by day exhausted worry of petroleum resources.Electric automobile can also make full use of
The power charge being had more than needed during night low power consumption, makes generating equipment day and night to make full use of, greatly improves its economic benefit.Just
It is these advantages, makes the research and application one " focus " as auto industry of electric automobile.
Electric automobile refers to the main automobile using driven by power, and its difficult point is electric power storing technology.And currently for electricity
The construction of the infrastructure of electrical automobile is complete not enough, and the charging for automobile is simultaneously inconvenient.And the electric automobile of in the market
It is to be powered using single battery, so causes in battery that whole automobile can not all be carried out after power shortage or damage
Work.Moreover, growing with automotive field, the electronic component on new-energy automobile is significantly increased, so as to result in
The increase of low pressure power consumption so that discharged or defective battery problem increasingly appears, and influence the usage experience of user.
The content of the invention
The embodiments of the invention provide a kind of accumulator control method, system and electric automobile, to solve in the prior art
Due to low tension battery power shortage cause electric automobile can not normally start or in-car electrical equipment can not normal work ask
Topic.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：
According to the embodiment of the present invention one side there is provided a kind of accumulator control method, including：
Obtain the magnitude of voltage for the first low tension battery being connected with entire car controller；
When the magnitude of voltage of first low tension battery is less than the first preset voltage value, the first low pressure electric power storage is controlled
Pond stops pair power supply for electrical equipment being connected with first low tension battery, and control be connected with the entire car controller the
Two low tension batterys are powered to the electrical equipment.
Further, the step of magnitude of voltage for the first low tension battery that the acquisition is connected with entire car controller, including：
Obtain in driving conditions, the magnitude of voltage for the first low tension battery being connected with entire car controller.
Further, first low tension battery is being controlled to stop the electricity consumption pair be connected with first low tension battery
After equipment is powered, the accumulator control method also includes：
The high voltage power battery being connected with the entire car controller is controlled to be stored by power supply changeover device for first low pressure
Battery charges.
Further, the high voltage power battery for controlling to be connected with the entire car controller is institute by power supply changeover device
The step of the first low tension battery charges is stated, including：
Control the high voltage power battery by the power supply changeover device by the high voltage direct current of the high voltage power battery
Be converted to after low-voltage DC, low-voltage DC is delivered to first low tension battery.
Further, the control high voltage power battery by the power supply changeover device by the high voltage power battery
High voltage direct current be converted to after low-voltage DC, the step of low-voltage DC is delivered to first low tension battery, bag
Include：
Obtain the magnitude of voltage of the high voltage power battery；
If the magnitude of voltage of the high voltage power battery is more than the second preset voltage value, the high voltage power battery is controlled to lead to
Cross the power supply changeover device to be converted to the high voltage direct current of the high voltage power battery after low-voltage DC, by low-voltage DC
It is delivered to first low tension battery.
Further, the high voltage power battery for controlling to be connected with the entire car controller is institute by power supply changeover device
State after the step of the first low tension battery charges, the accumulator control method also includes：
When the magnitude of voltage for detecting first low tension battery is higher than three preset voltage values, control described second is low
Battery is pressed to stop, to the power supply for electrical equipment, controlling first low tension battery to be powered the electrical equipment.
According to the embodiment of the present invention other side there is provided a kind of control system for accumulators, including：
First low tension battery；
Second low tension battery；
The entire car controller electrically connected respectively with first low tension battery and second low tension battery；
The entire car controller obtains the magnitude of voltage of first low tension battery；In the electricity of first low tension battery
When pressure value is less than the first preset voltage value, control what the first low tension battery stopping pair being connected with first low tension battery
Power supply for electrical equipment, and control second low tension battery to be powered the electrical equipment.
Further, the control system for accumulators also includes：
The high voltage power battery being connected with the entire car controller, and the power supply being connected with the high voltage power battery turn
Parallel operation, the power supply changeover device is connected with first low tension battery and second low tension battery respectively；
The entire car controller when the charge value of first low tension battery is less than the first default charge value, control with
The high voltage power battery is charged by the power supply changeover device for first low tension battery.
Further, the entire car controller is described controlling the high voltage power battery by the power supply changeover device
When first low tension battery charges, specifically for：Obtain the magnitude of voltage of the high voltage power battery；If the high voltage power battery
Magnitude of voltage be more than the second preset voltage value, then control the high voltage power battery by the power supply changeover device by the high pressure
The high voltage direct current of electrokinetic cell is converted to after low-voltage DC, and low-voltage DC is delivered into first low tension battery.
Further, the entire car controller is additionally operable to：When the magnitude of voltage for detecting first low tension battery is higher than
During three preset voltage values, second low tension battery is controlled to stop to the power supply for electrical equipment, control described first is low
Pressure battery is powered to the electrical equipment.
According to the embodiment of the present invention other side there is provided a kind of electric automobile, including：Battery as described above
Control system.
The beneficial effects of the invention are as follows：
Above-mentioned technical proposal, using double batteries, when power shortage situation occurs in one of battery, enables another
Battery is to power supply for electrical equipment, so as to ensure the normal startup of electric automobile and in-car electrical equipment normal work.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 represents the flow chart of accumulator control method provided in an embodiment of the present invention；
Fig. 2 represents the flow chart of control system for accumulators provided in an embodiment of the present invention；
Fig. 3 represents another flow chart of control system for accumulators provided in an embodiment of the present invention.
Description of reference numerals is as follows：
201st, entire car controller；202nd, the first low tension battery；203rd, the second low tension battery；204th, high voltage power electricity
Pond；205th, power supply changeover device.
Embodiment
The exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here
Limited.Conversely it is able to be best understood from the present invention there is provided these embodiments, and can be by the scope of the present invention
Complete conveys to those skilled in the art.
According to the embodiment of the present invention one side there is provided a kind of accumulator control method, as shown in figure 1, including：
The magnitude of voltage for the first low tension battery that step 101, acquisition are connected with entire car controller.
It is general that detecting ignition switch signal, (such as ACC gear signals, ON gear signals and START gear signals, i.e., non-
LOCK gear signals) when, start to obtain the magnitude of voltage for the first low tension battery being connected with entire car controller.Due to ignition switch
It is the power supply for electrical equipment in electric automobile that power supply in electric automobile, which can be opened, additionally it is possible to for the startup of engine, when
When detecting the non-LOCK gear signals of ignition switch, illustrate that occupant needs to use the electrical equipment of electric automobile or started electronic
Automobile, these processes are all to need the electric energy of battery consumption, and if electric automobile is unmanned for a long time, battery meeting nature
Electric discharge or can artificially be discharged, if now battery be in power shortage state, exist can not startup power supply be power supply for electrical equipment
Or the problem of electric automobile can not be started, therefore, may be provided at when detecting the non-LOCK gear signals of ignition switch, by obtaining the
The magnitude of voltage of one low tension battery, to monitor the state of battery in time, it is ensured that the demand of occupant.
Of course, it should be understood that can also be arranged on when meeting other conditions, the voltage of the first low tension battery is obtained
Value, such as obtains the magnitude of voltage for the first low tension battery being connected with entire car controller, typically in driving conditions when driving
Middle battery is not in power shortage situation, if occur, illustrate battery be likely to occur other can not normal power supply the problem of.
Wherein, the first low tension battery is electrically connected with entire car controller, and the entire car controller can monitor the first low pressure storage
The state of battery, such as magnitude of voltage.
Step 102, the first low tension battery magnitude of voltage be less than the first preset voltage value when, control the first low pressure electric power storage
Pond stops pair power supply for electrical equipment being connected with the first low tension battery, and controls the second low pressure being connected with entire car controller to store
Battery is powered to electrical equipment.
Wherein, the first preset voltage value is a relatively low numerical value of magnitude of voltage.When the magnitude of voltage of the first low tension battery is low
When the first preset voltage value, illustrate that the first low tension battery deposits the risk of ability power shortage, therefore in the embodiment of the present invention, at this moment
The first low tension battery is set to stop to power supply for electrical equipment, by the second low tension battery as standby battery to electrical equipment
It is powered, so, the normal startup of electric automobile and the normal work of in-car electrical equipment can either be ensured, can be subtracted again
The infringement that light power shortage problem is caused in itself to battery.
Under normal circumstances, the second low tension battery only receives the charging of power supply changeover device, does not export externally, only first
During low tension battery power shortage, just it is activated.Further, control of the driver to electric automobile for convenience, in the first low pressure
When the magnitude of voltage of battery is less than the first preset voltage value, alarm can be first carried out, the low tension battery of user first is informed
State.And driver can control the startup and closing of the second low tension battery by setting a shift knob in the car, so
It can be decided whether to start the second low tension battery by driver, be activated when not needed to prevent the second low tension battery, wave
Power-consuming energy.Specific implementation is：When entire car controller detects the magnitude of voltage of the first low tension battery less than the first default electricity
During pressure value, control the first low tension battery stop to power supply for electrical equipment, and detect for control the second low tension battery to
The shift knob signal that electric equipment is powered；If detecting the shift knob signal, the progress pair of the second low tension battery is controlled
Power supply for electrical equipment.
Preferably, in the embodiment of the present invention, magnitude of voltage when the first preset voltage value can be a little higher than power shortage, such energy
Enough avoid excessively feeding the infringement for causing battery.
Further, the embodiment of the present invention is controlling what the stopping pair of the first low tension battery was connected with the first low tension battery
After power supply for electrical equipment, it is first low by power supply changeover device that can also control the high voltage power battery being connected with entire car controller
Press battery charging.Specifically control high voltage power battery by power supply changeover device by the HVDC of high voltage power battery
Electricity is converted to after low-voltage DC, and low-voltage DC is delivered into the first low tension battery.
Wherein, after the first low tension battery stops to power supply for electrical equipment, high voltage power that can be on electric automobile is electric
Pond is charged to the first low tension battery, but due to the high voltage direct current of high voltage power battery output, therefore also need to pass through
The high voltage direct current that high voltage power battery is exported is converted to low-voltage DC by power supply changeover device, is delivered to the first low pressure electric power storage
Pond, is the charging of the first low tension battery.
When external power supply, it can also be charged by external power supply for the first low tension battery, specifically passing through Power convert
The High Level AC Voltage of external power supply is converted to low-voltage DC by device, is the charging of the first low tension battery.In addition, can also be by
External power supply charges for high voltage power battery, specifically being changed the High Level AC Voltage of external power supply by power supply changeover device
It is the charging of high voltage power battery for high voltage direct current.
In the embodiment of the present invention, power supply changeover device has DC/DC and AC/DC functions concurrently, and electric automobile can be effectively ensured and is expert at
It is that battery or high voltage power battery charge when car state or dead ship condition.
Wherein, high voltage power battery is mainly used in providing driving electric energy to electric automobile, if high voltage power battery electric quantity is not
Foot, then can influence vehicle to drive, therefore, be charged controlling high voltage power battery by power supply changeover device for the first low tension battery
Before, the magnitude of voltage of high voltage power battery can be first obtained, if the magnitude of voltage of high voltage power battery is more than the second preset voltage value,
Control high voltage power battery is converted to the high voltage direct current of high voltage power battery after low-voltage DC by power supply changeover device, will
Low-voltage DC is delivered to the first low tension battery.Wherein, the second preset voltage value is a higher numerical value of magnitude of voltage.Work as height
When the magnitude of voltage of pressure power battery is more than the second preset voltage value, illustrate that high voltage power battery has sufficient electricity, Neng Gou
Ensure under conditions of vehicle driving, be the charging of the first low tension battery.
Further, high voltage power battery is being controlled to be charged by power supply changeover device for the first low tension battery, if detection
When being higher than three preset voltage values to the magnitude of voltage of the first low tension battery, controllable second low tension battery stops setting electricity consumption
Available electricity, the first low tension battery of control is powered to electrical equipment.
Wherein, the 3rd preset voltage value is a higher numerical value of magnitude of voltage, when the magnitude of voltage of the first low tension battery is high
When three preset voltage values, illustrate that the electricity of the first low tension battery is sufficient, can continue to as power supply for electrical equipment, then make the
Two low tension batterys stop to power supply for electrical equipment, and electrical equipment is powered by the first low tension battery.
Of course, it should be understood that also can be always power supply for electrical equipment by the second low tension battery, until the second low pressure
It is again power supply for electrical equipment etc. by the first low tension battery when accumulator electric-quantity is not enough.
In summary, accumulator control method provided in an embodiment of the present invention, using double batteries, when one of electric power storage
When power shortage situation occurs in pond, another battery is enabled to power supply for electrical equipment, so as to ensure the normal startup of electric automobile
And in-car electrical equipment normal work.
According to the embodiment of the present invention other side there is provided a kind of control system for accumulators, as shown in Fig. 2 including：
First low tension battery 202, the second low tension battery 203 and respectively with the first low tension battery 202 and the second low pressure electric power storage
The entire car controller 201 that pond 203 is electrically connected.Wherein, the first low tension battery 202 and the second low tension battery 203 and electronic vapour
In-car electrical equipment electrical connection.
Wherein, entire car controller 201 can obtain the magnitude of voltage of the first low tension battery 202, in the first low tension battery
When 202 magnitude of voltage is less than the first preset voltage value, the stopping pair of the first low tension battery 202 of control and first low tension battery
The power supply for electrical equipment of 202 connections, and control the second low tension battery 203 to be powered electrical equipment.
General entire car controller 201 is detecting ignition switch signal (such as ACC gear signals, ON gear signals and START
Gear signal, i.e., non-LOCK gear signals) when, start the first low tension battery 202 that acquisition is connected with entire car controller 201
Magnitude of voltage.It is the power supply for electrical equipment in electric automobile because ignition switch can open the power supply in electric automobile, additionally it is possible to
For the startup of engine, when detecting the non-LOCK gear signals of ignition switch, illustrate that occupant needs to use electric automobile
Electrical equipment or startup electric automobile, these processes are all to need the electric energy of battery consumption, and if electric automobile is long-term
Unmanned, battery meeting nature is discharged or can be artificially discharged, if now battery is in power shortage state, presence can not be opened
The problem of dynamic power supply is power supply for electrical equipment or can not start electric automobile, therefore, may be provided at that to detect ignition switch non-
During LOCK gear signals, by obtaining the magnitude of voltage of the first low tension battery 202, to monitor the state of battery in time, it is ensured that
The demand of occupant.
Of course, it should be understood that can also be arranged on when meeting other conditions, the electricity of the first low tension battery 202 is obtained
Pressure value, such as obtains the magnitude of voltage for the first low tension battery 202 being connected with entire car controller 201, typically exists when driving
In driving conditions battery is not in power shortage situation, if occurring, and illustrating that battery is likely to occur other can not normal power supply
Problem.
Wherein, the first preset voltage value is a relatively low numerical value of magnitude of voltage.When the magnitude of voltage of the first low tension battery 202
During less than the first preset voltage value, illustrate that the first low tension battery 202 deposits the risk of ability power shortage, therefore in the embodiment of the present invention,
The first low tension battery 202 is set to stop to power supply for electrical equipment at this moment, by the second low tension battery as standby battery
203 pairs of electrical equipments are powered, so, can either ensure electric automobile normal startup and in-car electrical equipment it is normal
Work, can mitigate the infringement that power shortage problem is caused in itself to battery again.
Under normal circumstances, the second low tension battery 203 only receives the charging of power supply changeover device, does not export externally, only exists
During the first 202 power shortage of low tension battery, just it is activated.Further, control of the driver to electric automobile for convenience,
When the magnitude of voltage of one low tension battery 202 is less than the first preset voltage value, alarm can be first carried out, the low pressure of user first is informed
The state of battery 202.And driver can control the second low tension battery 203 by setting a shift knob in the car
Start and close, can so be decided whether to start the second low tension battery 203 by driver, to prevent the second low tension battery
203 need not when start, waste electric energy.Specific implementation is：When entire car controller 201 detects the first low tension battery
When 202 magnitude of voltage is less than the first preset voltage value, the first low tension battery 202 of control stops to power supply for electrical equipment, and examines
Survey the shift knob signal to power supply for electrical equipment for the second low tension battery 203 of control；If detecting the shift knob
Signal, then control the second low tension battery 203 to carry out to power supply for electrical equipment.
Preferably, in the embodiment of the present invention, magnitude of voltage when the first preset voltage value can be a little higher than power shortage, such energy
Enough avoid excessively feeding the infringement for causing battery.
Further, as shown in figure 3, the control system for accumulators also includes：The height being connected with entire car controller 201 is pressed
Power battery 204 and the power supply changeover device 205 being connected with high voltage power battery 204.Wherein, power supply changeover device 205 is respectively with
One low tension battery 202 and the second low tension battery 203 are connected.
Wherein, entire car controller 201 is when the charge value of the first low tension battery 202 is less than the first default charge value, control
System is that the first low tension battery 202 charges by power supply changeover device 205 with high voltage power battery 204.Specifically, control height is pressed
Power battery 204 is converted to the high voltage direct current of high voltage power battery 204 after low-voltage DC by power supply changeover device 205, will
Low-voltage DC is delivered to the first low tension battery 202.
Wherein, after the first low tension battery 202 stops to power supply for electrical equipment, high voltage power that can be on electric automobile
204 pair of first low tension battery 202 of battery charges, but due to high voltage power battery 204 export high voltage direct current, therefore
Also need to that the high voltage direct current that high voltage power battery 204 is exported is converted into low-voltage DC by power supply changeover device 205, convey
It is that the first low tension battery 202 charges to the first low tension battery 202.
Can be also that the first low tension battery 202 charges by external power supply, specifically passing through power supply when external power supply
The High Level AC Voltage of external power supply is converted to low-voltage DC by converter 205, is that the first low tension battery 202 charges.Except this
Outside, can be also that high voltage power battery 204 charge by external power supply, specifically by power supply changeover device 205 by external power supply
High Level AC Voltage be converted to high voltage direct current, be that high voltage power battery 204 charges.
In the embodiment of the present invention, power supply changeover device 205 has DC/DC and AC/DC functions concurrently, and electric automobile can be effectively ensured and exists
It is that battery or high voltage power battery 204 charge when driving states or dead ship condition.
Further, high voltage power battery 204 is mainly used in providing driving electric energy to electric automobile, if high voltage power battery
204 not enough power supplies, then can influence vehicle to drive, therefore, by power supply changeover device 205 be the in control high voltage power battery 204
Before the charging of one low tension battery 202, entire car controller 201 can first obtain the magnitude of voltage of high voltage power battery 204, if height is pressed
The magnitude of voltage of power battery 204 is more than the second preset voltage value, then controls high voltage power battery 204 will by power supply changeover device 205
The high voltage direct current of high voltage power battery 204 is converted to after low-voltage DC, and low-voltage DC is delivered into the first low pressure electric power storage
Pond 202.Wherein, the second preset voltage value is a higher numerical value of magnitude of voltage.When the magnitude of voltage of high voltage power battery 204 is more than
During the second preset voltage value, illustrate that high voltage power battery 204 has sufficient electricity, the condition of vehicle driving can ensured
Under, it is that the first low tension battery 202 charges.
Further, entire car controller 201 is additionally operable to：When detecting the magnitude of voltage of the first low tension battery 202 higher than the
During three preset voltage values, the second low tension battery 203 of control stops, to power supply for electrical equipment, controlling the first low tension battery 202
Electrical equipment is powered.
Wherein, the 3rd preset voltage value is a higher numerical value of magnitude of voltage, when the magnitude of voltage of the first low tension battery 202
During higher than three preset voltage values, illustrate that the electricity of the first low tension battery 202 is sufficient, can continue to as power supply for electrical equipment,
Then entire car controller 201 makes the second low tension battery 203 stop to power supply for electrical equipment, by 202 pairs of the first low tension battery with
Electric equipment is powered.
Of course, it should be understood that also can be always power supply for electrical equipment by the second low tension battery 203, until second is low
It is again power supply for electrical equipment etc. by the first low tension battery 202 when pressing 203 not enough power supply of battery.
In summary, control system for accumulators provided in an embodiment of the present invention, using double batteries, when one of electric power storage
When power shortage situation occurs in pond, another battery is enabled to power supply for electrical equipment, so as to ensure the normal startup of electric automobile
And in-car electrical equipment normal work.
According to the embodiment of the present invention other side there is provided a kind of electric automobile, including：Battery as described above
Control system.
Control system for accumulators in electric automobile provided in an embodiment of the present invention, using double batteries, when one of them
When power shortage situation occurs in battery, another battery is enabled to power supply for electrical equipment, so as to ensure the normal of electric automobile
Start and in-car electrical equipment normal work.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
Above-described is the preferred embodiment of the present invention, it should be pointed out that come for the ordinary person of the art
Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (11)
1. a kind of accumulator control method, it is characterised in that including：
Obtain the magnitude of voltage for the first low tension battery being connected with entire car controller；
When the magnitude of voltage of first low tension battery is less than the first preset voltage value, first low tension battery is controlled to stop
The only pair power supply for electrical equipment being connected with first low tension battery, and control be connected with the entire car controller second low
Pressure battery is powered to the electrical equipment.
2. accumulator control method according to claim 1, it is characterised in that what the acquisition was connected with entire car controller
The step of magnitude of voltage of first low tension battery, including：
Obtain in driving conditions, the magnitude of voltage for the first low tension battery being connected with entire car controller.
3. accumulator control method according to claim 1, it is characterised in that stop controlling first low tension battery
Only after pair power supply for electrical equipment being connected with first low tension battery, the accumulator control method also includes：
It is first low tension battery by power supply changeover device to control the high voltage power battery being connected with the entire car controller
Charging.
4. accumulator control method according to claim 3, it is characterised in that the control connects with the entire car controller
The high voltage power battery connect is the step of first low tension battery charges by power supply changeover device, including：
The high voltage power battery is controlled to change the high voltage direct current of the high voltage power battery by the power supply changeover device
After low-voltage DC, low-voltage DC is delivered to first low tension battery.
5. accumulator control method according to claim 4, it is characterised in that the control high voltage power battery leads to
Cross the power supply changeover device to be converted to the high voltage direct current of the high voltage power battery after low-voltage DC, by low-voltage DC
The step of being delivered to first low tension battery, including：
Obtain the magnitude of voltage of the high voltage power battery；
If the magnitude of voltage of the high voltage power battery is more than the second preset voltage value, the high voltage power battery is controlled to pass through institute
State power supply changeover device to be converted to the high voltage direct current of the high voltage power battery after low-voltage DC, low-voltage DC is conveyed
To first low tension battery.
6. accumulator control method according to claim 3, it is characterised in that the control connects with the entire car controller
After the step of high voltage power battery connect is charged by power supply changeover device for first low tension battery, the battery control
Method processed also includes：
When the magnitude of voltage for detecting first low tension battery is higher than three preset voltage values, second low pressure is controlled to store
Battery stops, to the power supply for electrical equipment, controlling first low tension battery to be powered the electrical equipment.
7. a kind of control system for accumulators, it is characterised in that including：
First low tension battery；
Second low tension battery；
The entire car controller electrically connected respectively with first low tension battery and second low tension battery；
The entire car controller obtains the magnitude of voltage of first low tension battery；In the magnitude of voltage of first low tension battery
During less than the first preset voltage value, first low tension battery is controlled to stop the electricity consumption pair be connected with first low tension battery
Equipment is powered, and controls second low tension battery to be powered the electrical equipment.
8. control system for accumulators according to claim 7, it is characterised in that also include：
The high voltage power battery being connected with the entire car controller, and the Power convert being connected with the high voltage power battery
Device, the power supply changeover device is connected with first low tension battery and second low tension battery respectively；
The entire car controller when the charge value of first low tension battery is less than the first default charge value, control with it is described
High voltage power battery is charged by the power supply changeover device for first low tension battery.
9. control system for accumulators according to claim 8, it is characterised in that the entire car controller is controlling the height
When pressure power battery is that first low tension battery charges by the power supply changeover device, specifically for：Obtain the high pressure
The magnitude of voltage of electrokinetic cell；If the magnitude of voltage of the high voltage power battery is more than the second preset voltage value, the high pressure is controlled
Electrokinetic cell is converted to the high voltage direct current of the high voltage power battery after low-voltage DC by the power supply changeover device, will
Low-voltage DC is delivered to first low tension battery.
10. control system for accumulators according to claim 8, it is characterised in that the entire car controller is additionally operable to：Work as inspection
When the magnitude of voltage for measuring first low tension battery is higher than three preset voltage values, second low tension battery is controlled to stop
To the power supply for electrical equipment, first low tension battery is controlled to be powered the electrical equipment.
11. a kind of electric automobile, it is characterised in that including：Battery control system as described in any one of claim 7 to 10
System.
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