CN207737138U - Electric vehicle lithium battery system and electric vehicle - Google Patents
Electric vehicle lithium battery system and electric vehicle Download PDFInfo
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- CN207737138U CN207737138U CN201820106385.3U CN201820106385U CN207737138U CN 207737138 U CN207737138 U CN 207737138U CN 201820106385 U CN201820106385 U CN 201820106385U CN 207737138 U CN207737138 U CN 207737138U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model embodiment is related to a kind of electric vehicle lithium battery system and electric vehicle.Electric vehicle lithium battery system includes at least two concatenated Modularized lithium batteries.Wherein, each Modularized lithium battery includes：Shell；The lithium battery module being arranged in the shell, wherein the lithium battery module includes the lithium cell row that parallel-connection structure is formed by multiple lithium cells, and cascaded structure is formed between each lithium cell row；And arrange and be electrically connected with each lithium cell in the lithium battery module, the power management circuit board that the working condition for arranging the lithium cell is monitored.The electric vehicle lithium battery system of the Modularized lithium battery composition combined as a result, by flexible connection in series-parallel, can be applicable in the electric vehicle of different voltages and capacity requirement, road holding and course continuation mileage effectively be promoted, to substitute lead-acid battery and current lithium battery scheme.
Description
Technical field
The utility model is related to field of new energy technologies, in particular to a kind of electric vehicle lithium battery system and electronic
Vehicle.
Background technology
Electric vehicle (such as electric motor car with two wheels, three-wheeled electric vehicle and part four-wheel electric motor car) common at present mostly uses plumbic acid
Battery system stores electrical energy drive vehicle traveling, wherein and two-wheeled electric motorcycle, three-wheeled electric vehicle 90% apply lead-acid battery,
Residue 10% applies lithium battery.The composition of lead-acid battery mainly closing plastic housing according to a certain percentage mixing impregnate stereotype and
Dilute sulfuric acid.Lead-acid battery is a kind of old battery technology, the disadvantage is that energy density low (keeping vehicle cruising ability low), electric discharge
Energy force difference (keeping road holding poor), electrolyte spill leakage, combustible hydrogen are precipitated, and heaviness, cryogenic property are bad, short life is (logical
Normal 1-2 halves using rear charge storage ability) charging time is long, can seriously pollute environment containing heavy metal lead.Lead-acid battery group system
The working condition that (power-supply management system BMS) detects and controls battery can not be needed, only the letter of certain amount of lead-acid battery
Single series connection constitutes the battery pack system that electric vehicle can use, can not accomplish working condition even safe condition known to can
Control, it is even more impossible to support following intelligent networking demand.And the power lithium for electric vehicle of existing lithium battery manufacturer production
Battery is all the entirety for designing and configuring according to the nominal voltage of whole electric vehicle, is a rated operational voltage
It is identical with certain electric vehicle nominal voltage, an indivisible Integral lithium electric cell system.This Integral lithium battery system
System because rated voltage is fixed cannot be used for the different other electric vehicle of nominal voltage, caused by present situation be that consumer purchases
Enter new electric vehicle, if voltage and capacity specifications change, consumer must cannot newly be purchased using old lithium battery,
It causes to waste.In addition certain lithium cell is broken entire lithium battery is just needed to scrap or repair in lithium battery, safeguard it is complicated, be replaced with
This is high, these features of existing lithium battery cause the huge limitation of lithium battery applications.Current lithium battery system physics simultaneously
It is size-constrained in integrated technology, can not accomplish to reach whole group plumbic acid while existing single lead-acid battery the same size and size
The voltage and capacity of battery system, in the case that in battery of electric vehicle storehouse, installation entrance only has single lead-acid battery size, installation
Lithium battery needs the structure for destroying original battery of electric vehicle storehouse that could be packed into lithium battery.
Utility model content
In order to overcome above-mentioned deficiency in the prior art, the purpose of this utility model is to provide a kind of electric vehicle lithium batteries
System and electric vehicle can be applicable in by the electric vehicle lithium battery system for the Modularized lithium battery composition that flexible connection in series-parallel is combined
The electric vehicle of different voltages and capacity requirement effectively promotes vehicle performance and cruising ability, environmentally friendly no pollution, to substitute plumbic acid electricity
Pond and current lithium battery scheme.
To achieve the goals above, the technical solution that the utility model preferred embodiment uses is as follows：
The utility model preferred embodiment provides a kind of electric vehicle lithium battery system, and the electric vehicle lithium battery system includes
At least two concatenated Modularized lithium batteries；
Wherein, each Modularized lithium battery includes：
Shell；
The lithium battery module being arranged in the shell, wherein the lithium battery module includes being formed by multiple lithium cells
The lithium cell of parallel-connection structure arranges, and cascaded structure is formed between each lithium cell row；And
It arranges and is electrically connected with each lithium cell in the lithium battery module, the working condition for arranging the lithium cell
The power management circuit board being monitored.
In the utility model preferred embodiment, the power management circuit board in each Modularized lithium battery includes
IC and field-effect tube are protected, the protection IC of each Modularized lithium battery and the electrical performance characteristic of field-effect tube are consistent,
In, the tolerance ceiling voltage of the power management circuit board is not less than the rated voltage of the electric vehicle, the power management electricity
The tolerance maximum current of road plate is not less than the rated current of the electric vehicle, the highest tolerance electricity of the protection IC and field-effect tube
Pressure is not less than the rated voltage of the electric vehicle, described to protect the highest of IC and field-effect tube tolerance electric current not less than described electronic
The rated current of vehicle.
In the utility model preferred embodiment, each lithium cell row include that anode connection terminal is connected with cathode
End, the power management circuit board is by detecting the anode connection terminal and cathode connecting pin electricity that winding displacement is arranged with each lithium cell
Property connection, to carry out working condition monitoring to each lithium cell row；
The Modularized lithium battery includes electric energy output cathode and electric energy output negative pole；
Cascaded structure is formed by series circuit conducting wire between each lithium cell row, the cascaded structure includes anode
And cathode, the anode are electrically connected with the electric energy output cathode by the first circuit lead, the cathode and the electric energy
Output negative pole is electrically connected by second circuit conducting wire；
The tolerance maximum current of the series circuit conducting wire, the first circuit lead and second circuit conducting wire is not less than described
The rated current of electric vehicle.
In the utility model preferred embodiment, the lithium cell quantity of each lithium cell row is identical and each described
The internal resistance of each lithium cell in lithium cell row, capacity are consistent with charge-discharge characteristic.
In the utility model preferred embodiment, by connecting line by a modularization lithium between modules lithium battery
The electric energy output cathode of the electric energy output cathode of battery and another Modularized lithium battery is electrically connected, and by connecting line by one
The electric energy output negative pole of a Modularized lithium battery and the electric energy output negative pole of another Modularized lithium battery are electrically connected, to realize
Parallel connection between modules lithium battery；
Wherein, the highest tolerance electric current of the power management circuit board is not less than after the Modularized lithium battery parallel shunt
Electric current, the tolerance maximum current of the series circuit conducting wire, the first circuit lead and second circuit conducting wire is not less than described
Electric current after Modularized lithium battery parallel shunt.
In the utility model preferred embodiment, by connecting line by a modularization lithium between modules lithium battery
The electric energy output cathode of battery and the electric energy output negative pole of another Modularized lithium battery are electrically connected, to realize modules
Series connection between lithium battery.
In the utility model preferred embodiment, the protection IC includes：
Overcharge protection circuit for each lithium cell row overcharge with protection；
For arranging each lithium cell the over-discharge protection circuit for carrying out Cross prevention；
For arranging each lithium cell the short-circuit protection circuit for carrying out short-circuit protection；And
The combination of one or more of current foldback circuit for arranging each lithium cell progress overcurrent protection.
In the utility model preferred embodiment, insulated heat material and vibration-absorptive material are additionally provided in the shell.
In the utility model preferred embodiment, the lithium cell uses 18650 lithium ion batteries, wherein each described
Angle between the extending direction of 18650 lithium ion batteries and the horizontal or vertical direction of the enclosure bottom is less than predetermined angular.
The utility model preferred embodiment also provides a kind of electric vehicle, and the electric vehicle includes that above-mentioned electric vehicle lithium is electric
Cell system.
In terms of existing technologies, the utility model has the advantages that：
A kind of electric vehicle lithium battery system of the utility model embodiment offer and electric vehicle.Electric vehicle lithium battery system includes
At least two concatenated Modularized lithium batteries.Each the Modularized lithium battery includes：Shell；Lithium in the shell is set
Battery modules.The lithium battery module includes the lithium cell row that parallel-connection structure is formed by multiple lithium cells, and each lithium cell arranges it
Between form cascaded structure；And arrange and be electrically connected with each lithium cell in the lithium battery module, for the lithium cell
The power management circuit board that the working condition of row is monitored.Simultaneously because using 18650 lithium cells and using specific 18650
Arrangement mode improves integrated level, realizes that Modularized lithium battery has appearance and size identical with single lead-acid battery of typical standard.
The electric vehicle lithium battery system of the Modularized lithium battery composition combined as a result, by flexible connection in series-parallel, can be applicable in different voltages
With the electric vehicle of capacity requirement, vehicle performance and cruising ability are effectively promoted, environmentally friendly no pollution, to substitute lead-acid battery and current
Lithium battery scheme.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram for the electric vehicle lithium battery system that the utility model preferred embodiment provides；
Fig. 2 is a kind of structural schematic diagram of Modularized lithium battery shown in Fig. 1；
Fig. 3 is a kind of connection between the utility model preferred embodiment power management circuit board provided and lithium cell row
Structure diagram；
Fig. 4 is a kind of structure diagram of power management circuit board shown in Fig. 3.
Icon：10- electric vehicle lithium battery systems；100- Modularized lithium batteries；110- shells；120- lithium battery modules；
130- lithium cells arrange；132- lithium cells；134- power management circuit boards；1341- overcharge protection circuits；1342- Cross prevention electricity
Road；1343- short-circuit protection circuits；1344- current foldback circuits；135- detects winding displacement；136- anode connection terminals；138- cathode connect
Connect end；140- parallel circuit conducting wires；150- series circuit conducting wires；160- electric energy output cathodes；170- electric energy output negative poles；180-
Connecting line.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, all other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "upper", "lower"
For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put
Relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model.
Below in conjunction with the accompanying drawings, it elaborates to some embodiments of the utility model.In the absence of conflict, under
Feature in the embodiment and embodiment stated can be combined with each other.
Referring to Fig. 1, a kind of structure of the electric vehicle lithium battery system 10 provided for the utility model preferred embodiment is shown
It is intended to.In the present embodiment, the electric vehicle lithium battery system 10 can be applied to electric vehicle, for providing electricity for the electric vehicle
The power energy.Wherein, the electric vehicle, that is, electric drive vehicle also known as electricity are driven.Electric vehicle is divided into alternating current electric vehicle and direct current drive
Vehicle.The electric vehicle usually said is to convert electrical energy into machinery by components such as controller, motors using battery as energy source
It can move, to control the vehicle that size of current changes speed.
It should be noted that the electric vehicle mentioned by the present embodiment can be it is not limited to electric bicycle, electronic
Motorcycle, electric unicycle, electric four-wheel vehicle, electro-tricycle, Segway Human Transporter, more wheel electric passenger vehicles and lorry etc.,
The present embodiment is not specifically limited this.
In detail, incorporated by reference to Fig. 1 and Fig. 2, the electric vehicle lithium battery system 10 includes at least two concatenated modularizations
Lithium battery 100 (shows four) in Fig. 1.Wherein, each Modularized lithium battery 100 includes shell 110, lithium battery module
120 and power management circuit board 134.Specifically, the lithium battery module 120 is arranged in the shell 110, the lithium electricity
Pond module 120 may include the lithium cell row 130 for forming parallel-connection structure by parallel circuit conducting wire 140 by multiple lithium cells 132, often
Cascaded structure is formed between a lithium cell row 130.The power management circuit board 134 with it is every in the lithium battery module 120
A lithium cell row 130 are electrically connected, and are monitored for the working condition to the lithium cell row 130.
In practical application scene, through inventor the study found that the production of existing lithium battery manufacturer is used for electric vehicle
Dynamic lithium battery, be all the entirety for designing and configuring according to the nominal voltage of whole electric vehicle, but battery system
Physical size is limited to integrated technology, can not accomplish to reach while existing single lead-acid battery the same size and size with it is whole
The identical rated voltage of group Acid Battery System and capacity.For example, by taking 48 volts of common power battery of electric vehicle as an example.It is existing dynamic
The battery of power lithium battery producer production is that (there are one lithium battery protection boards and several lithiums electricity for the battery packs of 48V as a whole
Battery core encapsulation is integral).
And above-mentioned Modularized lithium battery 100 provided in this embodiment may be used and common single lead-acid battery complete one
The appearance and size of sample, for the nominal voltage and capacity of different money electric vehicles, it may be convenient to it is combined and is adapted to by connection in series-parallel, this
Sample can be by selecting the Modularized lithium battery 100 of different number to suitable for the electronic of different voltages and capacity requirement
Vehicle.Moreover, 100 appearance and size of Modularized lithium battery is equal to the lead-acid battery of standard, can enter when mounted to avoid battery compartment
Mouth too small be put into needs to destroy battery box structure.For example, the series connection of Modularized lithium battery 100 of 2 24V can form 48V lithium electricity
Pond group and then the electric vehicle for being suitble to 48V, can be suitble to 72V electric vehicles, class if being further added by one and may only form 72V lithium battery groups
Seemingly, if combined shunt, capabilities double can may be implemented with 96V etc..Of course, it should be understood that Modularized lithium battery
100 can not also be only limitted to above-mentioned 24V Modularized lithium batteries 100, and those skilled in the art can be according to actual design demand
The Modularized lithium battery 100 that different voltages are arranged fills so as to easily substitute lead-acid battery and existing lithium battery system
Divide and realizes better course continuation mileage using the space of battery compartment.If some 100 failure of Modularized lithium battery or service life
It uses up, replaceable certain Modularized lithium battery 100 rather than entire electric vehicle lithium battery system 10.As a result, the present embodiment provides
Modularized lithium battery 100 and Modularized lithium battery 100 series and parallel structure can easily improve capacity boost vehicle continuation of the journey,
This programme, which has the characteristics of flexible combination, makes battery pack can also be in parallel in the case where needing to improve energy situation.
Further, in one embodiment, the shell 110 may be used heat-resistant antifriction high-strength material and be made,
Insulation, heat-barrier material, Heat Conduction Material and vibration-absorptive material are also provided in the shell 110, with to modularization lithium electricity
Pond 100 is insulated, is heat-insulated, radiated and damping.
Further, in one embodiment, the power management circuit board in each Modularized lithium battery 100
134 include the protection IC and field-effect tube of predetermined dimension, the protection IC and field-effect tube of each Modularized lithium battery 100
Electrical performance characteristic it is consistent.In order to enable the series connection of the Modularized lithium battery 100 and parallel connection are feasible, after guarantee connection in series-parallel in groups
Battery system normal work, the tolerance ceiling voltage of the power management circuit board 134 is specified not less than the electric vehicle
Voltage, after the tolerance maximum current of the power management circuit board 134 should meet 100 connection in series-parallel of Modularized lithium battery combination
Working condition requirement, such as should be not less than the electric vehicle rated current etc..Meanwhile the highest of the protection IC and field-effect tube
Withstanding voltage is not less than the rated voltage of the electric vehicle, described that the highest of IC and field-effect tube tolerance electric current is protected to be not less than institute
The rated current of electric vehicle is stated, the power management circuit board 134 is by detecting each 130 working condition of lithium cell row, in turn
The working condition of entire Modularized lithium battery 100 is grasped, the entire electric vehicle lithium battery system of composition is further grasped and be adapted to
10 working condition, on the basis of the above, incorporated by reference to Fig. 3, in the utility model preferred embodiment, each lithium cell row
130 include anode connection terminal 136 and cathode connecting pin 138, the power management circuit board 134 by detect winding displacement 135 with
The anode connection terminal 136 of each lithium cell row 130 and cathode connecting pin 138 are electrically connected, with to each lithium cell
Row 130 carry out working condition monitoring.
Further, then as shown in Figure 1, the Modularized lithium battery 100 may include that electric energy output cathode 160 and electric energy are defeated
Go out cathode 170, is exported the electric energy of a Modularized lithium battery 100 by connecting line 180 between modules lithium battery 100
The electric energy output negative pole 170 of anode 160 and another Modularized lithium battery 100 is electrically connected, to realize modules lithium electricity
Series connection between pond 100, to realize that the lithium battery system total voltage of this 100 voltage integral multiple of Modularized lithium battery is adapted to quasi-
Electric vehicle rated operational voltage it is consistent.Wherein, as shown in Fig. 2, passing through series electrical between each lithium cell row 130
Line conductor 150 forms cascaded structure, and the cascaded structure includes anode and cathode, the positive and electric energy output cathode
160 are electrically connected by the first circuit lead, and the cathode is electrical by second circuit conducting wire with the electric energy output negative pole 170
Connection.It is worth noting that in order to ensure the normal work of the Modularized lithium battery 100, the series circuit conducting wire 150,
The tolerance maximum current of first circuit lead and second circuit conducting wire should meet 100 connection in series-parallel of Modularized lithium battery combination
Working condition requirement afterwards, such as the rated current etc. of the electric vehicle should be not less than.
In the utility model preferred embodiment, in order to ensure the consistency of Modularized lithium battery 100 and exchange compatibility,
Each Modularized lithium battery 100 uses the consistent combination of lithium cell row 130, power management circuit board 134 and shell 110, and every
132 quantity of lithium cell of a lithium cell row 130 is identical, and each lithium cell 132 in each lithium cell row 130
Internal resistance, capacity are consistent with charge-discharge characteristic, to ensure the normal work after 100 connection in series-parallel of Modularized lithium battery.
Further, in one embodiment, between modules lithium battery 100 by connecting line 180 by one
The electric energy output cathode 160 of Modularized lithium battery 100 and the electric energy output cathode 160 of another Modularized lithium battery 100 are electrical
Connection, and it is by connecting line 180 that the electric energy output negative pole 170 of a Modularized lithium battery 100 and another modularization lithium is electric
The electric energy output negative pole 170 in pond 100 is electrically connected, to realize the parallel connection between modules lithium battery 100, to realize this
The lithium battery system total capacity of 100 capacity integral multiple of Modularized lithium battery, the nominal operation for being adapted to or being promoted different electric vehicles are held
Amount.Wherein, after 100 parallel connection of Modularized lithium battery, the highest tolerance electric current of the power management circuit board 134 is not less than
Electric current after 100 parallel shunt of the Modularized lithium battery, the series circuit conducting wire 150, the first circuit lead and second
The tolerance maximum current of circuit lead is not less than the electric current after 100 parallel shunt of the Modularized lithium battery.
If the Modularized lithium battery 100 constitutes the electric vehicle lithium battery system 10 in outer combined shunt of connecting, that
Above-mentioned connecting line 180, the first circuit lead and second circuit conducting wire are then not less than electric vehicle rated current because of modularization lithium
Electric current after 100 current distributing used in parallel of battery.In the utility model preferred embodiment, the power management circuit board
134 (BATTERY MANAGEMENT SYSTEM, BMS) can accurately estimate state-of-charge (the State of of lithium cell row 130
Charge, i.e. SOC), i.e. battery dump energy ensures that SOC is maintained in reasonable range, prevents due to overcharging or overdischarging
Battery is caused to damage.And in battery charge and discharge process, the voltage of each lithium cell row 130 is acquired in real time and temperature, is filled
Discharge current and 100 total voltage of Modularized lithium battery and real-time current prevent battery from overcharging or overdischarging phenomenon occurs.Simultaneously
Battery condition can be provided in time, selects and cope with problematic battery, keep the reliability and high efficiency of whole group battery operation,
Make remaining capacity estimation model is implemented as possibility.Each battery in battery pack can also be made all to reach equilibrium one in addition to this
The state of cause.Of course, it should be understood that the power management circuit board 134 can also not only detect lithium cell row 130, also examine
Lithium battery module 120 is surveyed, the Modularized lithium battery 100 where also detecting and ensuring itself is adapted to entire electric vehicle lithium battery system
10, so that it is guaranteed that the normal work for the entire lithium battery system being made of 100 connection in series-parallel of Modularized lithium battery.
In one embodiment, as shown in figure 4, the protection IC of the power management circuit board 134 may include：
Overcharge protection circuit 1341 for each lithium cell row 130 overcharge with protection；
Over-discharge protection circuit 1342 for each lithium cell row 130 to be carried out with Cross prevention；
Short-circuit protection circuit 1343 for each lithium cell row 130 to be carried out with short-circuit protection；And
One or more of current foldback circuit 1344 for each lithium cell row 130 to be carried out with overcurrent protection group
It closes.
It should be noted that the logic control program of above-mentioned protection circuit is all integrated in the protection IC, the protection
IC can be by protecting the components such as various resistance, capacitance, mos outside IC to realize above-mentioned multi-protective function.
Further, in the utility model preferred embodiment, 18650 lithium-ion electrics may be used in the lithium cell 132
Pond monomer (i.e. battery core), certainly it should be noted that in other embodiment, those skilled in the art can also be according to actual conditions
Using the lithium-ion battery monomer (or other lithium battery monomers (battery core) such as lithium polymer battery) of other models.
In one embodiment, the extending direction (18650 positive and negative anodes line) of each 18650 lithium ion battery with
Angle between 110 plane perpendicular direction of the shell is less than predetermined angular, and specifically, shell 110 is divided to for shell and upper cover two
Part, direction description here is upward based on shell nozzle, and upper cover level is shelved on above shell nozzle, wherein described predetermined
Angle is a minimum acute angle, such as 3 degree.Namely the extending direction of each 18650 lithium ion battery and the shell 110
Short transverse less parallel, using this design, the 18650 particular arrangement mode in shell 110 facilitates high integration, Jin Ershi
100 appearance and size of Modularized lithium battery is showed as the lead-acid battery of standard.(and lead-acid battery universal models 12V12Ah phases
It is respectively 150cm/100cm/100cm with its length, width and height, numerical value allows positive and negative 3 millimeters of errors)
In another embodiment, the extending direction of each 18650 lithium ion battery and 110 bottom surface of the shell
Angle between direction is less than predetermined angular, wherein the predetermined angular is a minimum acute angle, such as 3 degree.Namely it is each described
The short transverse near normal of the extending direction of 18650 lithium ion batteries and the shell 110, using this design, 18650 lithiums from
Particular arrangement mode of the sub- battery in shell 110 facilitates high integration, and then realizes 100 appearance and size of Modularized lithium battery
It is the same with the lead-acid battery of standard that (identical with lead-acid battery universal models 12V20Ah and 12V32Ah, length, width and height are respectively
180cm/77cm/170cm and 267cm/77cm/170cm, numerical value allow positive and negative 3 millimeters of errors).
The utility model preferred embodiment also provides a kind of electric vehicle, and the electric vehicle includes that above-mentioned electric vehicle lithium is electric
Cell system 10.The Modularized lithium battery 100 that the electric vehicle lithium battery system 10 includes can facilitate series connection and parallel connection, to substitute
Lead-acid battery and current lithium battery scheme.With reference to current electric vehicle common voltage 48V, 60V, 64V, 72V, 96V, to institute
State Modularized lithium battery 100 can configuration mode be illustrated, it is specific as follows：
Connection in series-parallel combination adaptation 48V voltage electric vehicles：
Two 24V12AH Modularized lithium batteries 100 are composed in series the electric vehicle lithium battery system 10 of 48V12AH.Due to
100 appearance and size of 24V12AH Modularized lithium batteries is fully equivalent to single standard 12V12AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 2 12V12Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and be connected to two and become 48V24AH electric vehicle lithium batteries system 10 with money Modularized lithium battery 100.
Two 24V20AH Modularized lithium batteries 100 are composed in series 48V20AH electric vehicle lithium batteries system 10, due to
100 appearance and size of 24V20AH Modularized lithium batteries is fully equivalent to single standard 12V20AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 2 12V20Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and it is connected to two electric vehicle lithium battery systems 10 for becoming 48V40AH with money Modularized lithium battery 100.
Two 24V32AH Modularized lithium batteries 100 are composed in series 48V32AH electric vehicle lithium batteries system 10.Due to
100 appearance and size of 24V32AH Modularized lithium batteries is fully equivalent to single standard 12V32AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 2 12V20Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and be connected to two and become 48V64AH electric vehicle lithium batteries system 10 with money Modularized lithium battery 100.
Connection in series-parallel combination adaptation 60V voltage electric vehicles
Two 30V20AH Modularized lithium batteries 100 are composed in series the electric vehicle lithium battery system 10 of 60V20AH, due to
100 appearance and size of 30V20AH Modularized lithium batteries is fully equivalent to single standard 12V20AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 3 12V20Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and it is connected to two electric vehicle lithium battery systems 10 for becoming 60V40AH with money Modularized lithium battery 100.
Two 30V32AH Modularized lithium batteries 100 are composed in series the electric vehicle lithium battery system 10 of 30V20AH, due to
100 appearance and size of 24V32AH Modularized lithium batteries is fully equivalent to single standard 12V32AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 3 12V32Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and it is connected to two electric vehicle lithium battery systems 10 for becoming 60V64AH with money Modularized lithium battery 100.
Connection in series-parallel combination adaptation 72V voltage electric vehicles
Three 24V20AH Modularized lithium batteries 100 are composed in series the electric vehicle lithium battery system 10 of 72V20AH, due to
100 appearance and size of 24V20AH Modularized lithium batteries is fully equivalent to single standard 12V20AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 3 12V20Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and it is connected to three electric vehicle lithium battery systems 10 for becoming 72V40AH with money Modularized lithium battery 100.
Three 24V32AH Modularized lithium batteries 100 are composed in series the electric vehicle lithium battery system 10 of 72V32AH, due to
100 appearance and size of 24V32AH Modularized lithium batteries is fully equivalent to single standard 12V32AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 3 12V32Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and it is connected to two electric vehicle lithium battery systems 10 for becoming 72V64AH with money Modularized lithium battery 100.
Connection in series-parallel combination adaptation 96V voltage electric vehicles
Four 24V20AH Modularized lithium batteries 100 are composed in series the electric vehicle lithium battery system 10 of 96V20AH, due to
100 appearance and size of 24V20AH Modularized lithium batteries is fully equivalent to single standard 12V20AH lead-acid battery, if to double electricity
Cell system capacity realizes that continuation of the journey is doubled, then at this time using the still remaining 4 12V20Ah lead-acid batteries in former battery of electric vehicle storehouse
Position, then and it is connected to 4 electric vehicle lithium battery systems 10 for becoming 96V40AH with money Modularized lithium battery 100.
Four 24V32AH are composed in series the electric vehicle lithium battery system 10 of 96V32AH, due to 24V32AH modularizations lithium electricity
100 appearance and size of pond is fully equivalent to single standard 12V32AH lead-acid battery, if the battery system capacity that double realizes continuation of the journey
Be doubled, then at this time using the position of the still remaining 4 12V32Ah lead-acid batteries in former battery of electric vehicle storehouse, then and be connected to 4 together
Money Modularized lithium battery 100 becomes the electric vehicle lithium battery system 10 of 96V64AH.
Those skilled in the art can refer to said program, the electric vehicle lithium provided by using the utility model embodiment
Battery system 10 can meet the electric vehicle of different voltages requirement, have high flexible combination characteristic, and easy to maintenance, dimension
It repaiies at low cost.Using lithium cell 132 using power source energy density high (improving vehicle cruising ability), discharge capability is strong, nothing
Electrolyte spill leakage, without be precipitated combustible hydrogen, light, cryogenic property is superior, long lifespan, charging time are short, without heavy metal to ring
Border no pollution etc..
In conclusion a kind of electric vehicle lithium battery system of the utility model embodiment offer and electric vehicle.Electric vehicle lithium electricity
Cell system includes at least two concatenated Modularized lithium batteries.Each the Modularized lithium battery includes：Shell；It is arranged described
Lithium battery module in shell.The lithium battery module includes the lithium cell row that parallel-connection structure is formed by multiple lithium cells, each
Cascaded structure is formed between lithium cell row；And in the lithium battery module each lithium cell arrange be electrically connected, for pair
The power management circuit board that the working condition of the lithium cell row is monitored.Simultaneously because using 18650 lithium cells and application
Specific 18650 arrangement mode improves integrated level, and it is identical with single lead-acid battery of typical standard to realize that Modularized lithium battery has
Appearance and size.The electric vehicle lithium battery system of the Modularized lithium battery composition combined as a result, by flexible connection in series-parallel, Ke Yishi
With the electric vehicle of different voltages and capacity requirement, vehicle performance and cruising ability, environmentally friendly no pollution, to substitute plumbic acid are effectively promoted
Battery and current lithium battery scheme.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (10)
1. a kind of electric vehicle lithium battery system, which is characterized in that the electric vehicle lithium battery system includes at least two concatenated
Modularized lithium battery；
Wherein, each Modularized lithium battery includes：
Shell；
The lithium battery module being arranged in the shell, wherein the lithium battery module includes forming parallel connection by multiple lithium cells
The lithium cell of structure arranges, and cascaded structure is formed between adjacent lithium cell row；And
It arranges and is electrically connected with each lithium cell in the lithium battery module, the working condition for arranging the lithium cell carries out
The power management circuit board of monitoring.
2. electric vehicle lithium battery system according to claim 1, which is characterized in that in each Modularized lithium battery
Power management circuit board includes protection IC and field-effect tube, each the protection IC of the Modularized lithium battery and field-effect tube
Electrical performance characteristic is consistent, wherein the tolerance ceiling voltage of the power management circuit board is specified not less than the electric vehicle
Voltage, the power management circuit board tolerance maximum current be not less than the electric vehicle rated current, the protection IC with
The highest withstanding voltage of field-effect tube is not less than the rated voltage of the electric vehicle, and the highest for protecting IC and field-effect tube is resistance to
It is not less than the rated current of the electric vehicle by voltage.
3. electric vehicle lithium battery system according to claim 1, which is characterized in that each lithium cell row include just
Pole connecting pin and cathode connecting pin, the power management circuit board is by detecting the anode of winding displacement and each lithium cell row even
It connects end and cathode connecting pin to be electrically connected, to carry out working condition monitoring to each lithium cell row；
The Modularized lithium battery includes electric energy output cathode and electric energy output negative pole；
Cascaded structure is formed by series circuit conducting wire between each lithium cell row, the cascaded structure includes positive and negative
Pole, the anode are electrically connected with the electric energy output cathode by the first circuit lead, and the cathode is exported with the electric energy
Cathode is electrically connected by second circuit conducting wire；
The tolerance maximum current of the series circuit conducting wire, the first circuit lead and second circuit conducting wire is not less than described electronic
The rated current of vehicle.
4. electric vehicle lithium battery system according to claim 3, which is characterized in that pass through between modules lithium battery
Connecting line is electrical by the electric energy output negative pole of the electric energy output cathode of a Modularized lithium battery and another Modularized lithium battery
Connection, to realize the series connection between modules lithium battery.
5. electric vehicle lithium battery system according to claim 3, which is characterized in that pass through between modules lithium battery
Connecting line is electrical by the electric energy output cathode of the electric energy output cathode of a Modularized lithium battery and another Modularized lithium battery
Connection, and it is by connecting line that the electric energy of the electric energy output negative pole of one Modularized lithium battery and another Modularized lithium battery is defeated
Go out cathode electric connection, to realize the parallel connection between modules lithium battery；
Wherein, the highest tolerance electric current of the power management circuit board is not less than the electricity after the Modularized lithium battery parallel shunt
The tolerance maximum current of stream, the series circuit conducting wire, the first circuit lead and second circuit conducting wire is not less than the module
Change the electric current after lithium battery parallel shunt.
6. electric vehicle lithium battery system according to claim 1, which is characterized in that the lithium cell of each lithium cell row
Quantity is identical, and each the internal resistance of each lithium cell in the lithium cell row, capacity are consistent with charge-discharge characteristic.
7. electric vehicle lithium battery system according to claim 2, which is characterized in that the protection IC includes：
Overcharge protection circuit for each lithium cell row overcharge with protection；
For arranging each lithium cell the over-discharge protection circuit for carrying out Cross prevention；
For arranging each lithium cell the short-circuit protection circuit for carrying out short-circuit protection；And
The combination of one or more of current foldback circuit for arranging each lithium cell progress overcurrent protection.
8. electric vehicle lithium battery system according to claim 1, which is characterized in that be additionally provided in the shell insulation every
Hot material and vibration-absorptive material.
9. electric vehicle lithium battery system according to claim 1, which is characterized in that the lithium cell using 18650 lithiums from
Sub- battery, wherein according to the design requirement of different money Modularized lithium batteries, the extension side of each 18650 lithium ion battery
It is less than predetermined angular to the angle between the horizontal or vertical direction of the enclosure bottom.
10. a kind of electric vehicle, which is characterized in that the electric vehicle includes electronic described in any one of claim 1-9
Vehicle lithium battery system.
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|---|---|---|---|
| CN201820106385.3U CN207737138U (en) | 2018-01-22 | 2018-01-22 | Electric vehicle lithium battery system and electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108099680A (en) * | 2018-01-22 | 2018-06-01 | 青岛超能动力有限公司 | Electric vehicle lithium battery system and electric car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108099680A (en) * | 2018-01-22 | 2018-06-01 | 青岛超能动力有限公司 | Electric vehicle lithium battery system and electric car |
| CN108099680B (en) * | 2018-01-22 | 2024-01-05 | 青岛超能动力有限公司 | Electric vehicle lithium battery system and electric vehicle |
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