CN108749641A - A kind of electric vehicle movement energy storage device and apply its method for handover control - Google Patents
A kind of electric vehicle movement energy storage device and apply its method for handover control Download PDFInfo
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- CN108749641A CN108749641A CN201810922309.4A CN201810922309A CN108749641A CN 108749641 A CN108749641 A CN 108749641A CN 201810922309 A CN201810922309 A CN 201810922309A CN 108749641 A CN108749641 A CN 108749641A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000005611 electricity Effects 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241001347978 Major minor Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D63/00—Motor vehicles or trailers not otherwise provided for
- B62D63/06—Trailers
Abstract
The embodiment of the invention discloses a kind of electric vehicle movement energy storage device and apply its method for handover control, the energy storage device includes towed vehicle, the battery system on the towed vehicle, electric current converting system, high pressure connection component and low pressure connection component, wherein, towed vehicle with electric vehicle for being detachably connected and can move with it；Electric current converting system is connected through high pressure connection component with electric vehicle, to realize high-pressure energy transmission, the charging of battery system and externally electric discharge；Electric current converting system is connected through low pressure connection component with electric vehicle, to realize that the low-voltage electrical of battery system connects.The function of this electric vehicle movement energy storage is more, use scope is wide.
Description
Technical field
The present embodiments relate to a kind of field of batteries of electric vehicle more particularly to a kind of electric vehicle movement energy storage dresses
It sets and using its method for handover control.
Background technology
Electric vehicle refers to driving wheels travel using vehicle power supply as power with motor, meeting road traffic, security legislation
The vehicle of requirements.In recent years, then under the dual promotion of soaring oil prices and low-carbon economy, new-energy automobile is put on important by various countries
Thus agenda, electric vehicle are got growing concern for.
Currently, since technical merit and cost limit, direct-current charging post distribution is less, it is difficult to meet user demand, especially
It is long-distance demand.In consideration of it, developing a variety of Mobile energy storage devices on the market, can be realized using this Mobile energy storage device
The fast assembling-disassembling being connect with electric vehicle can be used cooperatively with multiple types vehicle, for drive pure electric automobile it is long-distance go out
Row can travel on the service station of expressway with by means of with also, realization is uninterrupted.
However, the function of existing Mobile energy storage device is more single, and it is electronic to be in most cases only capable of meeting
Automobile power supply is to drive the braking electric energy of vehicle or recycling from vehicle to lead to this Mobile energy storage device without other function
Use scope it is limited.
Invention content
The embodiment of the present invention is designed to provide a kind of electric vehicle movement energy storage device and applies its switching control
Method, with solve the problems, such as electric vehicle in the prior art move energy storage device function it is very few, using limited.
To achieve the above object, the specific technical solution of a kind of electric vehicle movement energy storage device of the embodiment of the present invention
For：A kind of electric vehicle movement energy storage device, including towed vehicle, the battery system on the towed vehicle, electric current conversion system
System, high pressure connection component and low pressure connection component, wherein the towed vehicle is used to be detachably connected with electric vehicle and can be with it
It is mobile；The electric current converting system is connected through the high pressure connection component with the electric vehicle, with realize high-pressure energy transmission,
The charging of the battery system and externally electric discharge；The electric current converting system is through the low pressure connection component and the electric vehicle
It is connected, to realize that the low-voltage electrical of the battery system connects.
Using this scheme, the battery system of the energy storage device, electric current converting system can via high pressure connection component and
Connection is realized in low pressure connection component and the electric vehicle, charging net, extraneous load, so realize the energy storage device with it is electronic
The charge and discharge and the energy storage device of charge and discharge, the energy storage device with charging net between automobile make as independent current source
With in this way, the function of the electric vehicle movement energy storage can be increased, expand its use scope.
Preferably, the electric current converting system includes：Two-way DC converter is electrically connected with the battery system, to
It is satisfactory direct current by the DC conversion received, is embodied as electric vehicle charging or is filled for the battery system
Electricity；Two-way AC/DC convertor is electrically connected with the battery system, to be satisfactory by the AC conversion received
Direct current is realized from charging net or, being satisfactory alternating current by the DC conversion received to itself charging or to filling
Power grid provides energy；Unidirectional HVDC turns low-voltage direct converter, is electrically connected with the battery system, to what will be received
High voltage direct current is converted into satisfactory low-voltage DC, realizes to the electric vehicle and external load and provides low pressure energy
Amount.
Can be satisfactory by the DC conversion received by the two-way DC converter using this scheme
Direct current is embodied as electric vehicle charging or charges for the battery system, then the energy storage device, which has to electric vehicle, fills
Electricity and the operating mode that the extra energy storage of the electric vehicle gets up；It will be handed over by the two-way AC/DC convertor
Stream-direct current is mutually converted, and is realized from charging net to itself charging or is provided energy to charging net, then the energy storage device tool
The standby operating mode that mutual charge and discharge are carried out between power grid and energy storage device；Turn low-voltage direct by the unidirectional HVDC
Converter converts the high voltage direct current received to satisfactory low-voltage DC, realizes to external load and provides energy,
Then the energy storage device can be used as power supply use, that is, have the operating mode of outwardly load supplying；If in addition, the energy storage fills
It sets with vehicle high-speed mobile and in electric vehicle charging process, if the discharge power of energy storage device is more than vehicle, operation consumes electricity
Can also be that the on-vehicle battery packet of electric vehicle charges simultaneously, in this way, the work(of the electric vehicle movement energy storage can be increased when power
Can, it expand its use scope.
Preferably, the high pressure connection component includes：High pressure plug connector utilizes high-voltage wiring harness and the electric current converting system
Electrical connection, to realize that the energy storage device is electrically connected with the electric vehicle or charging net；Interface socket is exchanged, is utilized
High-voltage wiring harness is electrically connected with the electric current converting system, to realize the energy storage device and the charging net and described external bear
Carry connection；The low pressure connection component includes low pressure plug connector, is electrically connected with the battery system using low voltage wiring harness, to reality
The existing energy storage device is connect with the low-voltage power supply interface of the electric vehicle.
Can be storage by the way that the high pressure plug connector, exchange interface socket, low pressure plug connector is arranged using this scheme
The connection of energy device and external equipment provides a variety of connectors, to be suitable for a variety of external equipments, and then increases energy storage device
The scope of application.
Preferably, the battery system include battery modules, the battery management system being connect with the battery modules, with it is described
The fuse and precharging circuit that the anode of battery modules is electrically connected and is arranged in parallel, the electric current converting system are connected to the parallel connection
Between the fuse and precharging circuit and the cathode of the battery modules of setting, use is being provided on branch road where the fuse
To control the positive DC contactor of the on off operating mode of the branch, the battery modules cathode and the electric current converting system it
Between circuit on be provided with the negative DC contactor of control connected state between the two, be arranged on the precharging circuit useful
To control the preliminary filling D.C. contactor of the on off operating mode of the branch.
It is straight by the way that the positive DC contactor, the negative DC contactor, the preliminary filling is arranged using this scheme
Stream contactor can control the break-make of related circuit according to the concrete application scene of the energy storage device, to ensure the energy storage
Device is suitable for a variety of application models.
Preferably, further include traffic direction mounted on the towed vehicle rear lamplight pointing system, also, it is described
Lamplight pointing system is electrically connected via the low pressure connection component with the electric vehicle, and according to the operation of the electric vehicle
Situation sends out while braking and flickering car light.
Using this scheme, the lamplight pointing system can be sent out together according to the operating condition of electric vehicle (i.e. main vehicle)
When brake and flicker car light, thus remind subsequent vehicle to pay attention to vehicle condition, it is ensured that moving charging energy equipment safety floor mop is hung over
It drives safely after vehicle and with main vehicle.
Preferably, the towed vehicle includes the connecting rod in the front of the traffic direction mounted on the towed vehicle, the connection
The front end of bar is connected to by anti-avulsion pin or connecting hook on the electric vehicle before the towed vehicle, and its rear end is fixed
On the vehicle frame of the towed vehicle.
Institute can be simplified since the towed vehicle is connect using the connecting rod with the electric vehicle using this scheme
Pull connection structure of the towed vehicle with the electric vehicle is stated, it is fast to realize that Multifunctional mobile energy storage device is connect with electric vehicle
Speed dismounting, and then make mobile energy storage device that can be used cooperatively with multiple types vehicle, so that mobile energy storage device is had adaptable,
The advantages that feature-rich.
Preferably, the battery system is mounted on using attachment device on the towed vehicle, also, the attachment device uses
Fast assembly and disassembly mechanism is connect with the towed vehicle.
Using this scheme, it can be achieved that the fast assembling-disassembling of the battery system and the towed vehicle, can simplify the electricity
The disassembly process of cell system and the dismounting difficulty for reducing the battery system.
Preferably, further include cooling system to radiate to the electric current converting system, which passes through
Holder is directly installed on the towed vehicle.
Using this scheme, can effectively be radiated to the electric current converting system by the cooling system, into
And ensure the normal of electric vehicle movement energy storage device.
To achieve the above object, the tool of the method for handover control of the double cell packet of a kind of electric vehicle of the embodiment of the present invention
Body technique scheme is：Energy storage device is moved including any electric vehicle in aforementioned, by electric vehicle movement energy storage dress
The battery modules B2 set constitutes secondary cell packet, and the battery pack being had by electric vehicle itself constitutes main battery packet, the switching control
Method processed includes the following steps：
Both step 1, judges whether the main battery packet B1 needs to work at the same time with the secondary cell packet B2, if desired
It works at the same time, then enters step two；If not needing the two to work at the same time, six are entered step；
Step 2 judges whether that satisfaction switches to the main battery packet B1 and the secondary cell packet from the main battery packet B1
The condition that B2 is worked at the same time, enters step six if being unsatisfactory for, and three are entered step if meeting；
Step 3, the entire car controller VCU of the electric vehicle control the secondary cell packet B2 completions and power on flow；
Step 4 compares the voltage of B1/B2, and using the two-way DC converter DCDC by the secondary cell packet B2's
Voltage is adjusted to close with the voltage of main battery packet B1；
Step 5, the entire car controller VCU send out the prompt of power supply handoff procedure completion；
Step 6, the entire car controller VCU send out the prompt that power supply cannot switch and exit the program.
Preferably, in step 1, the situation that the main battery packet B1 is worked at the same time with the secondary cell packet B2 is needed to include
Any one in following scenario described：The low battery of the main battery packet B1, can not normally travel even can not limit power traveling；
The main battery packet B1 has catastrophe failure；Driver wants the electricity for retaining the main battery packet B1；
In step 2, satisfaction switches to the main battery packet B1 from the main battery packet B1 and the secondary cell packet B2 is common
The condition of work includes following all scenarios：The electricity of the secondary cell packet B2 is higher, can support normal vehicle operation or limit work(
Rate travels；The secondary cell packet B2 is without catastrophe failure；Client is not desired to retain the electricity of the secondary cell packet B2；The bidirectional, dc
Converter DCDC is without catastrophe failure.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is that the electric vehicle of the embodiment of the present invention moves the structural schematic diagram of energy storage device；
Fig. 2 is that the electric vehicle of the embodiment of the present invention moves the structural schematic diagram of energy storage device, is an embodiment；
Fig. 3 is that the electric vehicle of the embodiment of the present invention moves the electrical schematic diagram of energy storage device, is an embodiment；
Fig. 4 is the flow chart of the method for handover control of the double cell packet of the electric vehicle of the embodiment of the present invention；
Fig. 5 is being switched to mobile energy storage device battery pack simultaneously by on-vehicle battery packet isolated operation for the embodiment of the present invention
The flow chart of operation is an embodiment.
Specific implementation mode
It is below in conjunction with the accompanying drawings, electronic to one kind of the present invention in order to be better understood by the purpose of the present invention, structure and function
Automobile moves energy storage device and does further detailed description using its method for handover control.
As depicted in figs. 1 and 2, it is shown as a kind of structural representation of electric vehicle movement energy storage device of the embodiment of the present invention
Figure, referring to Fig.1 shown in-Fig. 2, the electric vehicle movement energy storage device described in the present embodiment includes mainly towed vehicle 100, is mounted on
Battery system 200 on the towed vehicle 100, the electric current being electrically connected on towed vehicle 100 and with the battery system 200 conversion
System 300, the cooling system 400 etc. on towed vehicle 100 to radiate to aforementioned currents converting system 300.Tool
Body,
Referring to Fig.1 shown in-Fig. 2, towed vehicle 100 has the vehicle frame 110 of support installation, which is all other
The supporting body of component, i.e., other components are all mounted on vehicle frame 110.Wheel 111 is installed on vehicle frame 110, in the present embodiment,
Wheel 111 is mounted on by suspension system on vehicle frame 110, which can be used rigid axle suspension, semi-independent suspension or only
Vertical suspension, according to rigid axle suspension, which can be leaf spring or carbon fiber leaf spring.Due on vehicle frame 110
It is provided with wheel 111 so that energy storage device movement can be carried, is the electric vehicle charging under the out of power state of emergency, meanwhile, storage
The energy self-contained wheel body of device, can move to point to be charged with main vehicle (electric vehicle for mounting energy storage device), or
Vehicle frame 110 and electric vehicle are pulled and are connected, towed vehicle 100 is made to be travelled with main vehicle by person, the electronic vapour being embodied as in traveling
Vehicle provides electrical source of power.
Connecting rod 130 is installed in front of the traffic direction of vehicle frame 110, it is preferable that in the present embodiment, the connecting rod
130 it is generally triangular or ">" shape, the rear end of the connecting rod 130 is connected on vehicle frame 110 by welding or bolt etc., is connected
The front end of bar 130 is securely attached at by anti-avulsion pin or connecting hook etc. on the electric vehicle of 100 front of towed vehicle, especially
Ground, connecting rod 130 should meet national corresponding vehicle with the connection scheme of electric vehicle and pull requirement.Since towed vehicle 100 is adopted
It is connect with electric vehicle with connecting rod 130, pull connection structure of the towed vehicle 100 with electric vehicle can be simplified, realized multi-functional
The fast assembling-disassembling that mobile energy storage device is connect with electric vehicle, and then make mobile energy storage device that can make with the cooperation of multiple types vehicle
With making mobile energy storage device have the advantages that adaptable, feature-rich.
Lamplight pointing system 120 is installed at the rear of the traffic direction of vehicle frame 110, in the present embodiment, lamplight pointing system
System 120 includes the steering indicating light 121 for being located at 110 right side of vehicle frame, the Brake lamp 122 positioned at 110 left side of vehicle frame and its connection wiring harness etc..
By the way that lamplight pointing system 120 is arranged on vehicle frame 110, which can send out according to the operating condition of main vehicle
Go out while braking and flickering car light, subsequent vehicle is thus reminded to pay attention to vehicle condition, it is ensured that moving charging energy equipment safety floor mop
It hangs over after vehicle and drives safely with main vehicle.
In addition, towed vehicle 100 also has braking system, in the present embodiment, braking system can under the premise of meeting regulation
It is not equipped with, is braked by the main vehicle being connect with towed vehicle 100.The concrete structure of braking system described here is existing
Technology, therefore be directed in concrete structure this example of braking system and repeat no more.
Battery system 200 is mounted on by attachment device 140 on vehicle frame 110.In the present embodiment, attachment device 140 uses
The bolt of fast demountable so facilitates the dismounting of battery system 200.
Fig. 3 is the electrical schematic diagram that electric vehicle moves energy storage device, is an embodiment, specifically, with reference to shown in Fig. 3,
The battery management system that it includes the battery modules B2 for storing electricity that battery system 200 is main, is connect with battery modules B2
BMS (i.e. Battery management system, abbreviation BMS), it is electrically connected and is arranged in parallel with the anode of battery modules B2
Precharging circuit and fuse F21, on off operating mode to control the branch is set in the parallel branch where fuse F21
Negative DC contactor on positive DC contactor C21, the circuit being arranged between battery modules B2 cathode and external load
C22, wherein precharging circuit is made of preliminary filling D.C. contactor C23 and preliminary filling resistance R21, is controlled via preliminary filling D.C. contactor C23
Make the on off operating mode of the precharging circuit.
Battery management system BMS is cell management system of electric automobile, it is connection vehicle mounted dynamic battery and electronic vapour
The important tie of vehicle, major function include：Battery physical parameter monitors in real time；Battery status is estimated；Inline diagnosis and early warning；
Charge and discharge are controlled with preliminary filling；Balanced management and heat management etc..Aforementioned positive electrode D.C. contactor C21, negative DC contactor C22,
Preliminary filling D.C. contactor C23 is connect with battery management system BMS signals.
Electric current converting system 300 is by holder or is directly installed on the vehicle frame 110 of towed vehicle 100, and with aforementioned battery
System 200 is electrically connected.Specifically, in the present embodiment, electric current converting system 300 is mounted on the front side of vehicle frame 110.With reference to Fig. 3 institutes
Show, electric current converting system 300 is arranged as external load in the parallel branch being made of precharging circuit and fuse F21 and electricity
Between the cathode of cell system 200.Electric current converting system 300 includes mainly two-way DC converter (DCDC), the change of two-way alternating current-direct current
Parallel operation (DCAC), unidirectional HVDC turn low-voltage direct converter (low-voltage DC/DC), these three converters are arranged in parallel, and after
The two integrates.
Wherein, two-way DC converter (DCDC) to by the DC conversion received be satisfactory direct current.
In the present embodiment, which is electrically connected using high-voltage wiring harness with battery modules B2, recycles high-voltage line
High pressure plug connector C2 (331 in corresponding diagram 1) possessed by beam end and electric vehicle or charging net (such as mains-supplied net)
It realizes electrical connection, and then is embodied as electric vehicle charging or charges for battery modules B2.Main electricity possessed by electric vehicle itself
When the secondary cell packet of Chi Bao and mobile energy storage device is used in parallel, it is attached by the two-way DC converter (DCDC), it is real
The bidirectional modulation of existing cell voltage, the description of switching control method part as described below, with reference to shown in Fig. 4 and Fig. 5.
Two-way AC/DC convertor (DCAC) to by the AC conversion received be satisfactory direct current, or,
It is satisfactory alternating current by the DC conversion received.In the present embodiment, with reference to shown in Fig. 3, two-way ac-dc conversion
Device (DCAC) is electrically connected using high-voltage wiring harness with battery modules B2, is recycled and is exchanged interface socket possessed by high-voltage wiring harness end
C3 (332 in corresponding diagram 1) with charging net (such as commercial power charged net or charging pile etc.) connect, hereby it is achieved that from charge net to
Itself charging nets offer energy to charging.
Unidirectional HVDC turns low-voltage direct converter (low-voltage DC/DC) to convert the high voltage direct current received to
Satisfactory low-voltage DC, in the present embodiment, with reference to shown in Fig. 3, unidirectional HVDC turns low-voltage direct converter (low pressure
DCDC it) is electrically connected with battery modules B2 using high-voltage wiring harness, recycles low pressure plug connector C1 possessed by low voltage wiring harness end (right
Answer 333 in Fig. 1) it is connect with electric vehicle and external load, hereby it is achieved that energy storage device and electric vehicle and external load
Low-voltage electrical connects.
Cooling system 400 is also through holder or is directly installed on the vehicle frame 110 of towed vehicle 100, to be converted to electric current
System 300 radiates.Specifically, in the present embodiment, cooling system 400 is mounted on the front side of vehicle frame 110, the cooling system
400 include the radiator 410 for being mounted on the front side of vehicle frame 110, closely the heat emission fan 420 of the radiator 410 setting, using pipeline with
Coolant liquid compensator and water pump that radiator 410 connects etc..
In addition, with reference to shown in Fig. 3, in addition to battery modules B2 described above utilizes the low pressure plug connector of low voltage wiring harness end
C1 (in corresponding diagram 1 333 shown in) is connect with electric vehicle, to realize that battery system low-voltage electrical connects；Meanwhile aforementioned light
Instruction system 120 is electrically connected using low voltage wiring harness and aforementioned low pressure plug connector C1 (in corresponding diagram 1 333 shown in), which refers to
Show that system 120 is realized via the low pressure plug connector C1 and electric vehicle to be electrically connected.
The secondary cell packet that above-mentioned Fig. 1-electric vehicle movement energy storage devices shown in Fig. 3 can be used as electric vehicle uses, this
Class electric vehicle is commonly provided with two battery packs of major-minor, the two battery packs can be independently operated, also used in parallel.Based on above-mentioned
The structure description of mobile energy storage device, the present embodiment also disclose a kind of electric vehicle movement energy storage device and electric vehicle itself
Main battery packet method for handover control (with reference to shown in Fig. 4), specially by on-vehicle battery packet isolated operation switch to it is mobile
The control method (referring to Figure 5) that energy storage device battery pack is run simultaneously, control method realization individually make from main battery packet
With being switched to the state that is used in conjunction with after major and minor battery pack is adjusted by two-way DC converter (DCDC).
For convenience described below, it is B1 by main battery package definition possessed by electric vehicle itself, electric vehicle is moved
Battery modules (i.e. secondary cell packet) possessed by dynamic energy storage device are defined as B2, and the voltage of main battery packet B1 is expressed as VB1, secondary electricity
The voltage of pond packet B2 is expressed as VB2.It is used as double cell usually using entire car controller (VCU, Vehicle Control Unit)
The top level control device of packet, to realize the control to dual battery system.Referring to shown in Fig. 4 and Fig. 5 to the method for handover control
It is described in detail.
Step 1, first determines whether main battery packet B1 needs to work at the same time with secondary cell packet B2.
It includes but not limited to following scenario described to need the situation that main battery packet B1 and secondary cell packet B2 is worked at the same time：
11), the low battery of main battery packet B1, can not normally travel even can not limit power traveling；
12), main battery packet B1 has catastrophe failure；
13), driver wants the electricity for retaining main battery packet B1；
If main battery packet B1 and secondary cell packet B2 meets any one in above-mentioned three kinds of situations, main battery packet B1 and pair
Battery pack B2 needs work at the same time, then enter step two；If main battery packet B1 and secondary cell packet B2 is unsatisfactory for above-mentioned three kinds of situations
In any one, then main battery packet B1 and secondary cell packet B2 need not be worked at the same time, then enter step six.
Step 2, judges whether to meet from main battery packet B1 and switches to what main battery packet B1 and secondary cell packet B2 was worked at the same time
Condition.
Meet and switches to main battery packet B1 from main battery packet B1 and the cooperative conditions of secondary cell packet B2 include but unlimited
In following all scenarios：
21), the electricity of secondary cell packet B2 is higher, can support normal vehicle operation or limit power traveling；
22), secondary cell packet B2 is without catastrophe failure；
23), client is not desired to retain the electricity of secondary cell packet B2；
24), two-way DC converter (DCDC) is without catastrophe failure；
If conditions above is unsatisfactory for, six are entered step；If conditions above all meets, three are entered step.
Step 3, entire car controller VCU control secondary cell packet B2 completions power on flow.
Secondary cell packet B2 battery pack negative DC contactor C22 are first closed, are reclosed in positive DC contactor C21 completions
Electric process.
Step 4 is compared the voltage of B1/B2, and is adjusted the voltage of secondary cell packet B2 using two-way DC converter DCDC
It is extremely close with the voltage of main battery packet B1.
Work as VB2>When VB1, entire car controller VCU controls two-way DC converter DCDC enters decompression mode, by secondary cell
The voltage of packet B2 is adjusted to close with the voltage of main battery packet B1；
Work as VB2<When VB1, entire car controller VCU controls two-way DC converter DCDC enters boost mode, by secondary cell
The voltage of packet B2 is adjusted to close with the voltage of main battery packet B1；
When main battery packet B1 and secondary cell packet B2 are operated together driving electric vehicle, according to the battery pack state of B1/B2,
Adjust the voltage and current of secondary cell packet B2 in real time using two-way DC converter DCDC.
Step 5, entire car controller VCU send out the prompt of " power supply works at the same time ", complete entire switching control process.
Specifically, entire car controller VCU issues instrument " power supply works at the same time prompt " signal, then in instrument " power supply is same
When work prompt " lamp lights, alternatively, show handover success signal or prompt statement on instrument display screen.
Step 6, entire car controller VCU send out the prompt of " power supply cannot work at the same time ", and entire car controller exits the switching
Control program.
In addition, further including following steps between step 4 and step 5：Entire car controller VCU control cooling system (tools
Body is the radiator of bidirectional, dc exchanger DCDC) it opens.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In the description of the present application, it is to be understood that term "front", "rear", "left", "right", etc. the orientation of instructions or
Position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in the claim of the present invention and the range of specification.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but include all technical solutions fallen within the scope of the appended claims.
Claims (10)
1. a kind of electric vehicle moves energy storage device, which is characterized in that including towed vehicle (100), be mounted on the towed vehicle (100)
On battery system (200), electric current converting system (300), high pressure connection component and low pressure connection component, wherein it is described to pull
Vehicle (100) with electric vehicle for being detachably connected and can move with it；The electric current converting system (300) connects through the high pressure
Connected components are connected with the electric vehicle, to realize high-pressure energy transmission, the charging of the battery system (200) and externally put
Electricity；The electric current converting system (300) is connected through the low pressure connection component with the electric vehicle, to realize the battery system
The low-voltage electrical connection of system (200).
2. electric vehicle according to claim 1 moves energy storage device, which is characterized in that the electric current converting system
(300) include：
Two-way DC converter is electrically connected with the battery system (200), to be to conform to by the DC conversion received
The direct current asked is embodied as the electric vehicle charging or charges for the battery system (200)；
Two-way AC/DC convertor is electrically connected with the battery system (200), to be to meet by the AC conversion received
It is required that direct current, or, by the DC conversion received be satisfactory alternating current, realize from charging net to itself charge
Or it is netted to charging and energy is provided；
Unidirectional HVDC turns low-voltage direct converter, is electrically connected with the battery system (200), to the high pressure that will be received
DC conversion is satisfactory low-voltage DC, realizes to the electric vehicle and external load and provides low voltage energy.
3. electric vehicle according to claim 1 moves energy storage device, which is characterized in that the high pressure connection component packet
It includes：
High pressure plug connector (331) is electrically connected using high-voltage wiring harness with the electric current converting system (300), to realize the storage
Energy device is electrically connected with the electric vehicle or charging net；
Interface socket (332) is exchanged, is electrically connected with the electric current converting system (300) using high-voltage wiring harness, it is described to realize
Energy storage device is connect with the charging net and external load；
The low pressure connection component includes low pressure plug connector (333), is electrically connected using low voltage wiring harness and the battery system (200)
It connects, to realize that the energy storage device is connect with the low-voltage power supply interface of the electric vehicle.
4. electric vehicle according to claim 1 moves energy storage device, which is characterized in that battery system (200) packet
Battery modules, the battery management system being connect with the battery modules are included, is electrically connected with the anode of the battery modules and parallel connection is set
The fuse and precharging circuit set, the electric current converting system (300) are connected to the fuse being arranged in parallel and precharging circuit
Between the cathode of the battery modules,
It is being provided with to control the positive DC contactor of the on off operating mode of the branch on branch road where the fuse,
The company of control between the two is provided on circuit between the battery modules cathode and the electric current converting system (300)
The negative DC contactor of logical state,
It is provided with to control the preliminary filling D.C. contactor of the on off operating mode of the branch on the precharging circuit.
5. electric vehicle according to claim 1 moves energy storage device, which is characterized in that further include being mounted on described pull
The lamplight pointing system (120) at the rear of the traffic direction of vehicle (100), the lamplight pointing system (120) is via the low pressure
Connection component is electrically connected with the electric vehicle, and is sent out according to the operating condition of the electric vehicle while being braked and flickering vehicle
Lamp.
6. electric vehicle according to claim 1 moves energy storage device, which is characterized in that the towed vehicle (100) includes
The front end of connecting rod (130) mounted on the front of the traffic direction of the towed vehicle (100), the connecting rod (130) passes through only
Out of stock or connecting hook is connected on the electric vehicle before the towed vehicle (100), and its rear end is fixed on described drag
On the vehicle frame (110) of trailer (100).
7. electric vehicle according to claim 1 moves energy storage device, which is characterized in that the battery system (200) is adopted
With attachment device (140) be mounted on the towed vehicle (100) on, also, the attachment device (140) using fast assembly and disassembly mechanism with
Towed vehicle (100) connection.
8. electric vehicle according to claim 1 moves energy storage device, which is characterized in that further include to the electric current
The cooling system (400) that converting system (300) radiates, the cooling system (400) is by holder or is directly installed on described
On towed vehicle (100).
9. a kind of method for handover control of the double cell packet of electric vehicle, which is characterized in that including any institute in claim 1-8
The electric vehicle movement energy storage device stated, the battery modules that energy storage device is moved by the electric vehicle constitute secondary cell packet B2, by
The battery pack that electric vehicle itself has constitutes main battery packet B1, and the method for handover control includes the following steps：
Step 1, judges whether the main battery packet B1 needs to work at the same time with the secondary cell packet B2, both if desired simultaneously
Work, then enter step two；If not needing the two to work at the same time, six are entered step；
Step 2 judges whether that satisfaction switches to the main battery packet B1 from the main battery packet B1 and the secondary cell packet B2 is same
When the condition that works, six are entered step if being unsatisfactory for, is entered if meeting
Step 3；
Step 3, secondary cell packet B2 completions described in the vehicle control unit controls of the electric vehicle power on flow；
Step 4, compares the voltage of B1/B2, and using two-way DC converter by the voltage of the secondary cell packet B2 adjust to
The voltage of the main battery packet B1 is close；
Step 5, the entire car controller send out the prompt of power supply handoff procedure completion；
Step 6, the entire car controller send out the prompt that power supply cannot switch and exit the program.
10. the method for handover control of the double cell packet of electric vehicle according to claim 9, which is characterized in that step 1
In, it includes any one in following scenario described to need the situation that the main battery packet B1 and secondary cell packet B2 is worked at the same time：
The low battery of the main battery packet B1, can not normally travel even can not limit power traveling；
The main battery packet B1 has catastrophe failure；
Driver wants the electricity for retaining the main battery packet B1；
In step 2, meets from the main battery packet B1 and switch to the main battery packet B1 and secondary cell packet B2 co-operation
Condition include all in following scenario described：
The electricity of the secondary cell packet B2 is higher, can support normal vehicle operation or limit power traveling；
The secondary cell packet B2 is without catastrophe failure；
Client is not desired to retain the electricity of the secondary cell packet B2；
The two-way DC converter is without catastrophe failure.
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