CN208827634U - A kind of hybrid battery set control system of electric vehicle - Google Patents
A kind of hybrid battery set control system of electric vehicle Download PDFInfo
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- CN208827634U CN208827634U CN201821454370.2U CN201821454370U CN208827634U CN 208827634 U CN208827634 U CN 208827634U CN 201821454370 U CN201821454370 U CN 201821454370U CN 208827634 U CN208827634 U CN 208827634U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a kind of hybrid battery set control systems of electric vehicle, including the fast charge and discharge pond group of one group of high rate capability and one group of low range performance battery group, and control module and generator/motor, the capacity of the fast charge and discharge pond group of high rate capability is less than low range performance battery pool-size, the low range performance battery group passes through charge-discharge modules a, current limliting module a is connected to control module, the fast charge and discharge pond group of high rate capability passes through charge-discharge modules b, current limliting module b and control module diconnected, the control module and generator/motor diconnected.The utility model uses hybrid battery drive control, the capacity of the fast charge and discharge pond group of high rate capability is less than low range performance battery pool-size, using low capacity lithium battery group, not only contribute to electric vehicle traveling control, and the single lead battery of volume ratio of battery pack wants small, safety will be got well, the capacitance requirement of reduced lithium battery, and cost reduces very much.
Description
Technical field
The utility model relates to the hybrid battery group controls of a kind of electric vehicle control field more particularly to a kind of electric vehicle
System processed.
Background technique
Existing a large amount of electric vehicles, such as field (factory) interior purposes electric vehicle (tour bus, fork truck, cruiser, tractor, height
Idle job vehicle etc.) mostly use lead storage battery to drive, use cost is low, stability and safety are good, but its volume and weight are big,
Charge-discharge magnification performance is poor, can only (rate of charge is less than with smaller discharge current (discharge-rate 0.1-0.3C) and charging current
0.15C) use, in changeable road conditions (such as upward slope, descending, Uneven road) or big load variation (unloaded, fully loaded), battery life
And performance can become very poor, and cannot recycle energy when descending or braking, according to the lead storage battery of larger capacity, power supply is dynamic
Though power increases, its volume is too big, and inconvenience is placed, and weight also increases will be greatly reduced vehicle electrical efficiency, vehicle safety too much
Property can also reduce.Such as use high rate capability lithium battery group instead, though vehicle performance is good, cost is very high, and (battery price is lead electricity
3-10 times of pond), it is more expensive according to the lithium battery cost of large capacity.
Utility model content
The purpose of this utility model is that providing one kind solves the above problems, and from Cost And Performance, develops one
Kind cost savings performance stablizes the hybrid battery set control system for being suitble to the electric vehicle of changeable road conditions.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of hybrid battery set control system of electric vehicle, the hybrid battery set control system include high rate capability height
The fast charge and discharge pond group of high rate performance and low range performance battery group, the fast charge and discharge pond group low range performance battery group of high rate capability
And control module and generator/motor, the capacity of the fast charge and discharge pond group of high rate capability hold less than low range performance battery group
Amount, low range performance battery group are connected to by charge-discharge modules a, current limliting module a with control module, the fast charge and discharge of high rate capability
Pond group passes through charge-discharge modules b, current limliting module b and control module diconnected, control module and the two-way company of generator/motor
It is logical.
In the utility model preferred embodiment, above-mentioned low range performance battery group is lead battery, and control module is
Bidirectional current limiting management module, BMS module and motor control module, hybrid battery set control system pass through bidirectional current limiting management module
Stable discharging control is carried out to generator/motor, and is charged to the fast charge and discharge pond group of high rate capability；High rate capability
Fast charge and discharge Chi Zuwei lithium battery group, hybrid battery set control system carry out motor control module and generator/motor quick
Supplement control of discharge.
In the utility model preferred embodiment, the battery capacity of above-mentioned lead battery and lithium battery group is 4 than section:
1-4。
In the utility model preferred embodiment, above-mentioned lithium battery group uses ferric phosphate lithium cell, ternary lithium-ion electric
One of pond, lithium titanate battery, lithium manganate battery or polymer battery or combinations thereof object.
In the utility model preferred embodiment, above-mentioned low range performance battery group is equipped with bidirectional current limitation management
Module.
A kind of hybrid battery group control method of electric vehicle, the hybrid battery group control method include the following steps:
It is upper in electric vehicle that at least one set of fast charge and discharge pond group of high rate capability and at least one set of low range performance battery group are set, according to
Needed for the electricity of changeable road conditions, the fast charge and discharge pond group of high rate capability quickly provides its electricity demand and is supplemented, with low power
Rate performance battery pack one is all that generator/motor provides mains power.
It is above-mentioned when being run under different operating conditions in the utility model preferred embodiment, low range performance charge and discharge battery
Group provides stable mains power for generator/motor by bidirectional current limiting management module and motor control module；
When upward slope and multi-speed exchanged road conditions are advanced, the fast charge and discharge Chi Zuyu low range performance battery group of high rate capability is common
Mains power is provided for generator/motor, low range performance battery group provides one and stablizes electricity, the fast charge and discharge pond of high rate capability
Group carries out quick electricity according to changeable operating condition and replenishes the supply.
Above-mentioned in descending or when slowing down in the utility model preferred embodiment, generator/motor is converted to hair
Electric power generation preferentially charges to the fast charge and discharge pond group of high rate capability, is charged to specified threshold just simultaneously to two kinds of battery packs
Charging.
It is above-mentioned when the fast charge and discharge pond group capacitance of high rate capability is lower than specified in the utility model preferred embodiment
When threshold values, low range performance battery group charges to it；When charge volume reaches another specified threshold, charging stops.
In the utility model preferred embodiment, above-mentioned external charge module preferentially charges to lithium battery, charging
When to specified threshold, one of lead battery charge and discharge control module or bidirectional current limiting module or a variety of startings are to lead battery
It charges, lead battery charges to 100% capacity to lithium battery again after being full of.
Compared with the prior art, the advantages of the utility model are: the utility model uses hybrid battery drive control, it is high
The capacity of the fast charge and discharge pond group of high rate performance is less than low range performance battery pool-size not only to be had using low capacity lithium battery group
It travels and controls conducive to electric vehicle, and the single lead battery of volume ratio of battery pack wants small, safety will be got well, with single lithium
Battery pack is compared, the capacitance requirement of reduced lithium battery, and cost reduces very much.
Detailed description of the invention
Fig. 1 is the utility model principle block diagram 1；
Fig. 2 is the utility model principle block diagram 2.
Annotation: 1.-lithium battery group；2. lead battery；3. external charge module；4. bidirectional current limiting management module；⑤-
Lithium battery BMS；6. motor control module；7. driving motor/generator；8. wheel.
Specific embodiment
The utility model is described in further detail below.
Embodiment: referring to Fig. 1, a kind of hybrid battery set control system of electric vehicle, including one group of high rate capability are fast
Charge and discharge battery pack and one group of low range performance battery group and control module and generator/motor, the high rate capability fast charge
The capacity for putting battery pack is less than low range performance battery pool-size, and the low range performance battery group passes through charge-discharge modules a, limit
Flow module a is connected to control module, and the fast charge and discharge pond group of high rate capability passes through charge-discharge modules b, current limliting module b and control
Molding block diconnected, the charge-discharge modules a, charge-discharge modules b charge and discharge control, the current limliting module b current limliting module a into
Row current-limiting protection limits maximum rated discharge rate electric current, avoids charging current excessive and feedback charging current is excessive, described
Control module and generator/motor diconnected, the controller use programmable AC MOTOR controller, the high magnification
The fast charge and discharge Chi Zuyu low range performance battery group of performance is equipped with overcurrent protection module, provides overcurrent during the charging process and protects
Shield stops charging after high rate capability fast charge and discharge Chi Zuyu low range performance battery group charging complete.The utility model is adopted
Mains power, the high rate capability fast charge are provided with the fast charge and discharge Chi Zuyu low range performance battery group mixing of high rate capability
Battery pack is put quickly according to needed for the electricity of changeable road conditions, its electricity demand is provided and is supplemented, with low range performance battery
Group one is all that generator/motor provides mains power.
When steady road conditions are advanced, low range performance battery group is power generation/electronic by charge-discharge modules a and control module
Machine provides stable mains power；When upward slope and multi-speed exchanged road conditions are advanced, the fast charge and discharge Chi Zuyu low range of high rate capability
Performance battery group provides mains power jointly for generator/motor, and low range performance battery group provides one and stablizes electricity, high magnification
The fast charge and discharge pond group of performance carries out quick electricity according to changeable operating condition and replenishes the supply, and quickly copes with various road conditions variable and needs,
Stable vehicle power is provided；
Generator/motor is generator motor all-in-one machine, and in descending, wheel drives generator/motor rotation hair
Electricity charges to pond group by feedback current, preferentially charges to the fast charge and discharge pond group of high rate capability, it is ensured that high magnification
Needed for the fast charge and discharge pond group of performance copes with road conditions at any time, and the fast charge and discharge pond group capacitance of high rate capability is small, discharges compared with trickle charge
Pond group will first exhaust electricity, charge again to low range performance battery group after the fast charge and discharge pond group of high rate capability is full of.
To avoid the fast charge and discharge pond group electricity of high rate capability from exhausting, when can not carry out repid discharge drive control, work as height
When the fast charge and discharge pond group capacitance of high rate performance is lower than 20% specified threshold, opens low range performance battery group and it is filled
The stopping when capacitance of electricity, the fast charge and discharge pond group of high rate capability reaches 80%.When vehicle parking, external power supply pair can also be passed through
The fast charge and discharge Chi Zuyu low range performance battery group charging of high rate capability.
The battery capacity of the lead battery is that 200AH discharge rate is 1-5HR current limliting 200-40A, the lithium battery group electricity
Capacity is that 100AH discharge rate is 1C-3C or the lithium battery group capacitance be 25AH discharge rate is 5C-10C,
It 2C can be reached according to ferric phosphate lithium cell puts 1.5C and fill, for access times at 2000-3000 times, the service life is moderate, warp
Ji property is moderate, and safety is good, and low temperature properties are poor.
3-5C can be arrived according to ternary lithium ion battery putting 2-3C and fill, for access times at 1000-2000 times, the service life is short, warp
Ji property is good, and safety is good, can run under -10 degrees Celsius.
6C charge and discharge can be reached according to lithium titanate battery, for access times at 20,000 times, the service life is long, and performance is best, safety
Good, higher cost is less economical,
If lithium manganate battery, which can reach 5-10C charge and discharge or polymer battery, can reach 3-6C charge and discharge.
Refer to Fig. 2, a kind of hybrid battery set control system of electric vehicle, including one group of fast charge and discharge of high rate capability
Pond group (1. lithium battery group) and one group of low range performance charge and discharge battery pack (2. lead battery) and external power charging device
(3. external charge module), lead battery charge and discharge control module (4. bidirectional current limiting management module), lithium battery pack management system
(5. lithium battery BMS), vehicular electric machine control module (6. motor control module), are driven driving motor (7. driving motor/generator)
The main components such as motor car wheel (8. wheel) composition, the capacity of the fast charge and discharge pond group (1. lithium battery group) of high rate capability are less than
Or it is equal to common rate charge-discharge pond group (2. lead battery) capacity, the low range performance charge and discharge battery pack (2. lead battery)
Pass through lead battery charge and discharge control module (4. bidirectional current limiting management module) and lithium battery pack management system (5. lithium battery BMS)
It is bi-directionally connected with vehicular electric machine control module (6. motor control module), vehicular electric machine control module (the 6. motor control mould
Block) with driving motor (7. driving motor/generator) diconnected, driving motor is connected to by transmission mechanism with wheel.With it is existing
There is technology to compare, the utility model is using two kinds of characteristic battery mixing outputs and recovers energy, using low capacity lithium battery group, benefit
With the high power charging-discharging characteristic of lithium battery, meets the electric current supply under various working and high-power energy recycles in short-term, mention
High vehicle performance and capacity usage ratio, while lead battery provides the stabilization charge and discharge under specified multiplying power under charge-discharge modules control
Electric current realizes longer use time and continual mileage, and compared with single lead battery, vehicle performance and battery life are substantially mentioned
Height, with single compared with capacity Lithium batteries group, deployment cost reduces very much.
In conclusion the utility model uses hybrid battery drive control, the capacity of the fast charge and discharge pond group of high rate capability
Electric vehicle traveling control, and battery are not only contributed to using low capacity lithium battery group less than low range performance battery pool-size
The lead battery that the volume ratio of group is single wants small, and safety will be got well, compared with single lithium battery group, the electricity of reduced lithium battery
Capacity requirement, and cost reduces very much.
Detailed Jie has been carried out to a kind of hybrid battery set control system of electric vehicle provided by the utility model above
It continues, specific case used herein is expounded the principles of the present invention and embodiment, and above embodiments are said
The bright method and its core concept for being merely used to help understand the utility model；At the same time, for those skilled in the art,
Based on the idea of the present invention, there will be changes in the specific implementation manner and application range, to the utility model
Change and improvement will be possible, the conception and scopes without exceeding accessory claim defined, in conclusion this explanation
Book content should not be construed as a limitation of the present invention.
Claims (5)
1. a kind of hybrid battery set control system of electric vehicle, which is characterized in that the hybrid battery set control system includes
The fast charge and discharge pond group of high rate capability high rate capability and low range performance battery group, the fast charge and discharge pond group low power of high rate capability
Rate performance battery pack and control module and generator/motor, the capacity of the fast charge and discharge pond group of high rate capability are less than low
High rate performance battery capacity, the low range performance battery group are connected by charge-discharge modules a, current limliting module a and control module
Logical, the fast charge and discharge pond group of high rate capability is described by charge-discharge modules b, current limliting module b and control module diconnected
Control module and generator/motor diconnected.
2. the hybrid battery set control system of electric vehicle according to claim 1, which is characterized in that the low power is forthright
Can battery pack be lead battery, the control module be bidirectional current limiting management module, BMS module and motor control module, it is described
Hybrid battery set control system carries out stable discharging control to the generator/motor by the bidirectional current limiting management module,
And it charges to the fast charge and discharge pond group of the high rate capability；The fast charge and discharge Chi Zuwei lithium battery of high rate capability
Group, the hybrid battery set control system carry out quickly supplement control of discharge to motor control module and generator/motor.
3. the hybrid battery set control system of electric vehicle according to claim 2, which is characterized in that the lead battery
It than section is 4:1-4 with the battery capacity of lithium battery group.
4. the hybrid battery set control system of electric vehicle according to claim 2, which is characterized in that the lithium battery group
Using one of ferric phosphate lithium cell, ternary lithium ion battery, lithium titanate battery, lithium manganate battery or polymer battery or its
Composition.
5. the hybrid battery set control system of electric vehicle according to claim 1, which is characterized in that the low power is forthright
Energy battery pack is equipped with bidirectional current limitation management module.
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| CN201821454370.2U CN208827634U (en) | 2018-09-06 | 2018-09-06 | A kind of hybrid battery set control system of electric vehicle |
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| CN201821454370.2U CN208827634U (en) | 2018-09-06 | 2018-09-06 | A kind of hybrid battery set control system of electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130950A (en) * | 2018-09-06 | 2019-01-04 | 道达电动车制造成都有限公司 | A kind of the hybrid battery set control system and control method of electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130950A (en) * | 2018-09-06 | 2019-01-04 | 道达电动车制造成都有限公司 | A kind of the hybrid battery set control system and control method of electric vehicle |
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