CN201766129U - Electric automobile power battery system with multiple battery sets - Google Patents
Electric automobile power battery system with multiple battery sets Download PDFInfo
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- CN201766129U CN201766129U CN2010202472752U CN201020247275U CN201766129U CN 201766129 U CN201766129 U CN 201766129U CN 2010202472752 U CN2010202472752 U CN 2010202472752U CN 201020247275 U CN201020247275 U CN 201020247275U CN 201766129 U CN201766129 U CN 201766129U
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- lithium ion
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- phosphate lithium
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- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 86
- 239000002253 acid Substances 0.000 claims abstract description 33
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000005955 Ferric phosphate Substances 0.000 claims description 83
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 83
- 229940032958 ferric phosphate Drugs 0.000 claims description 83
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 83
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 83
- 239000000178 monomer Substances 0.000 claims description 37
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 27
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 27
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 15
- 230000008901 benefit Effects 0.000 abstract description 5
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 1
- 229910000652 nickel hydride Inorganic materials 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 16
- 229910052793 cadmium Inorganic materials 0.000 description 13
- 229910052744 lithium Inorganic materials 0.000 description 7
- 229910052493 LiFePO4 Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003446 memory effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
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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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- Battery Mounting, Suspending (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to an electric automobile power battery, in particular to an electric automobile power battery system with multiple battery sets, which comprises a main discharging battery set and an auxiliary discharging battery set. Nominal voltage of the main discharging battery set and the auxiliary discharging battery set matches with each other, and the auxiliary discharging battery set adopting iron phosphate lithium ion batteries is connected in parallel with the main discharging battery set via a high-power diode. The electric automobile power battery system with multiple battery sets adopts lead acid batteries, or cadmium-nickel or nickel hydride batteries as the main discharging battery set, and the iron phosphate lithium ion battery set as the auxiliary discharging battery set, plays up the strength while avoiding the weaknesses, can meet the technical requirements such as high ration discharging performance, high output voltage, high-load capacitance and the like of the electric automobile power battery, and has the advantages of higher performance, lower cost, convenient utilization, safety and reliability due to the fact that the high-power diode is adopted as a parallel-connection electronic element and the conversion requires no other operation.
Description
One, technical field: the utility model relates to a kind of electric automobile power battery, particularly relates to a kind of many battery pack electric automobile power battery system.
Two, background technology: electric automobile is because characteristics such as its environmental protection, energy-conservation, efficient height receive increasingly extensive concern.But, also there is not at present the electrokinetic cell system of specification requirements such as a kind of desirable high-rate discharge ability that can satisfy electric automobile power battery, high magnification charging performance, high output voltage, highly charged capacity as the electrokinetic cell of one of electric automobile critical component.At present, electric automobile power battery has become the big bottleneck that the restriction electric automobile is popularized and developed.
At applied technical fields such as electric automobiles, the battery types that can be used as vehicle-mounted power is a lot, mainly contains lead-acid battery, ickel-cadmium cell, Ni-MH battery, lithium ion battery, zinc-air battery and ultracapacitor etc.The high power output characteristic of ickel-cadmium cell is fine, is used in electric powered motor already.Ickel-cadmium cell is when its charging state SOC=100%, and output power density can reach 500W/kg in 15 seconds; Even also can reach 250W/kg during SOC=50%.In addition, its cryogenic discharging characteristic and cycle life are all fine, all can satisfy the requirement of experimental design (DOE).Its charge acceptance in charging state is the 30-70% scope also is extraordinary.But the specific energy of ickel-cadmium cell is not very high, has limited its application on electric automobile.
Lead-acid battery is the history in existing more than 100 year so far, is the battery that price is the most cheap, technology is the most ripe.Electric automobile the earliest adopts lead-acid battery as the energy.Its specific energy has only 40-50W.h/kg; Specific power has 400-450W/kg.But the equilibrium relation between them but is to occupy on the various storage batterys.For example its charging state drops at 50% o'clock from 100%, and its output specific power still can reach 350W/kg.Be much better than ickel-cadmium cell box Ni-MH battery.Therefore, from the angle of specific energy and specific power relation, this battery has satisfied the requirement of rolling off the production line of DOE.Simultaneously, characteristics such as the power output under high temperature of lead-acid battery (52 ℃) and low temperature (20 ℃) state, specific energy, charge acceptance, cycle life, self discharge all satisfy the requirement of DOC.
Japanese honda company is used for the Prinus hybrid electric automobile to the cylindrical D Ni-MH battery of 6.25Ah.This is to test maximum a kind of batteries on hybrid electric automobile, also is a kind of battery of comparative maturity.Why Ni-MH battery is subjected to the favor of electric automobile industry, is that at first it has the high power density of 600-900W/kg, even also has good charge acceptance when SOC=50%.Its specific energy but descended very soon when yet Ni-MH battery was exported at high power, even also be difficult to satisfy the requirement of the 300-400V that DOE proposes in the SOC excursion that allows.
Ferric phosphate lithium cell newly developed is to make the lithium ion battery of anode with LiFePO4 (LiFePO4 is called for short LFP) material, and it is the newcomer of lithium ion battery family.The main advantage of ferric phosphate lithium cell is embodied in: 1) safe in utilization, the adhesion of phosphate radical chemical bond is stronger than traditional transition metal oxide structural chemistry key, so structure is more stable, and be difficult for discharging oxygen, solved the security hidden trouble of cobalt acid lithium and LiMn2O4 fully, ferric phosphate lithium cell is at present global unique lithium ion battery that is perfectly safe, and stability at high temperature can reach 400-500 ℃, has guaranteed the fail safe of battery inherence; Not can because of overcharge, temperature is too high, short circuit, bump produce blast or burning; 2) battery life overlength recycles the number of times height, and at room temperature the 1C charge and discharge cycles is 2000 times, and capability retention is more than 80%; Be more than 2 times of current lithium ion battery; 3) this battery does not contain any heavy metal and rare metal (Ni-MH battery needs rare metal), and nontoxic (the SGS authentication is passed through) is pollution-free, meets European RoHS regulation, is absolute environmental protection battery; 4) this battery weight is very light, is 1/3 of lead-acid battery, 63% of Ni-MH battery; 5) discharge platform is stable, and can satisfy big electric current high power and discharge and recharge the high-multiplying power discharge characteristic: the 10C efficiency for charge-discharge reaches more than 96%, and capability retention can be realized the 10C discharge more than 90%; 6) self-discharge of battery is little, memory-less effect; Chargeable battery is worked often being in to be full of under the condition of not put, and capacity can be lower than the rated capacity value rapidly, and this phenomenon is called memory effect.Have memory effect as ni-mh, nickel-cadmium cell, and ferric phosphate lithium cell does not have this phenomenon, no matter battery is in any state, can be with filling with usefulness, and need not put earlier and recharged; 7) this quickly charging battery characteristic is excellent, and 2C fills abundance 95% half an hour soon; 8) operating temperature range broadness (20 ℃-+75 ℃) has high-temperature stability, and LiFePO4 electric heating peak value can reach 350 ℃-500 ℃, and LiMn2O4 and cobalt acid lithium are only about 200 ℃.
Because the geneogenous Stability Analysis of Structures characteristic of ferric phosphate lithium cell, particularly has incomparable advantage aspect fail safe and the cycle performance, so adopt the battery of lithium iron phosphate positive material to be mainly used in Large Electric vehicle (train, bus, fork truck, sight spot tourist coach, hybrid vehicle and pure electric vehicle etc.) and military affairs, space industry (steamer, submarine, panzer, rocket, space car etc.).But LiFePO4 poorly conductive, lithium ion diffusion velocity are slow.During high power charging-discharging, actual specific capacity is low, and this problem is a difficult point of restriction ferric phosphate lithium ion battery industry development.
Three, utility model content:
The utility model is at the prior art deficiency, a kind of many battery pack electric automobile power battery system is proposed, mix and use lead-acid battery, cadmium nickel or Ni-MH battery and ferric phosphate lithium ion battery, maximize favourable factors and minimize unfavourable ones, can satisfy specification requirements such as the high-rate discharge ability of electric automobile power battery, highly charged capacity.
The technical scheme that the utility model adopted:
A kind of many battery pack electric automobile power battery system, contain discharge main body battery pack (1), auxiliary discharge battery pack (2), the nominal voltage of described discharge main body battery pack (1) and auxiliary discharge battery pack (2) is complementary, described auxiliary discharge battery pack (2) adopts ferric phosphate lithium ion battery, auxiliary discharge battery pack (2) is by heavy-duty diode and the parallel connection of discharge main body battery pack (1), the positive pole of described heavy-duty diode links to each other with the positive pole of auxiliary discharge battery pack (2), the negative pole of heavy-duty diode links to each other with the positive pole of discharge main body battery pack (1), and described discharge main body battery pack (1) is connected with the negative pole of auxiliary discharge battery pack (2).
The capacity units in series that described many battery pack electric automobile power battery system, auxiliary discharge battery pack (2) form after by the ferric phosphate lithium ion battery monomer of some or the ferric phosphate lithium ion battery monomer parallel connection by some is formed.
Described many battery pack electric automobile power battery system, discharge main body battery pack (1) adopts lead-acid battery, discharge main body battery pack (1) is composed in series by M lead-acid battery cells, the capacity units in series that auxiliary discharge battery pack (2) is formed after by L ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(L * 3.33-M * 2.08)＜M * 0.2, wherein M, L are natural number.
Described many battery pack electric automobile power battery system, discharge main body battery pack (1) be cadmium nickel or Ni-MH battery, the main body of discharging battery pack is by H cadmium nickel or Ni-MH battery is monomer series-connected forms; The capacity units in series that the auxiliary discharge battery pack is formed after by P ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies with the nominal voltage of discharge main body battery pack (1) :-0.5＜(P * 3.33-H * 1.30)＜H * 0.1, wherein H, P are natural number.
Described many battery pack electric automobile power battery system, the power of heavy-duty diode is greater than 100A.
Described many battery pack electric automobile power battery system, auxiliary discharge battery pack (2) is composed in parallel by N ferric phosphate lithium ion battery unit, the capacity units in series that each ferric phosphate lithium ion battery unit is formed after by the ferric phosphate lithium ion battery monomer of some or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, and described N is a natural number.
Described many battery pack electric automobile power battery system, discharge main body battery pack (1) adopts lead-acid battery, discharge main body battery pack (1) is composed in series by M lead-acid battery cells, the capacity units in series that each ferric phosphate lithium ion battery unit in parallel of forming auxiliary discharge battery pack (2) is formed after by L ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(L * 3.33-M * 2.08)＜M * 0.2, wherein M, L is a natural number.
Described many battery pack electric automobile power battery system, described discharge main body battery pack (1) is cadmium nickel or Ni-MH battery, discharge main body battery pack (1) is by H cadmium nickel or Ni-MH battery is monomer series-connected forms; The capacity units in series that each ferric phosphate lithium ion battery unit in parallel of forming auxiliary discharge battery pack (2) is formed after by P ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(P * 3.33-H * 1.30)＜H * 0.1, wherein H, P are natural number.
Described many battery pack electric automobile power battery system, each ferric phosphate lithium ion battery unit respectively is connected by the positive pole of a heavy-duty diode that is just connecing with discharge main body battery pack (1).
Useful good effect of the present utility model:
1, the utility model overcomes the defective of the various electric motor car electrokinetic cells of prior art, lead-acid battery, cadmium nickel or Ni-MH battery and ferric phosphate lithium ion battery are organically combined, give full play to advantage separately, avoid its deficiency, be combined into a kind of electrokinetic cell system that collects above-mentioned several types storage battery advantage, can satisfy the specification requirement such as high-rate discharge ability, high magnification charging performance, high output voltage, highly charged capacity of electric automobile power battery.The present invention with lead-acid battery, cadmium nickel or Ni-MH battery as discharge main body battery pack, N is organized ferric phosphate lithium ion battery to be parallel on the discharge main body by electronic devices and components, organize ferric phosphate lithium ion battery energy in support with this N, when automobile needs high power discharge, for example when starting and upward slope, provide main power output by discharge main body battery pack, provide auxiliary power output, improved the acceleration performance of electric automobile widely by the ferric phosphate lithium ion battery group; When automobile normally travelled stably, the ferric phosphate lithium ion battery group provided main output power, owing to the big capacity of ferric phosphate lithium ion battery group, can strengthen the continuation of the journey mileage of electric automobile.
2, many battery pack of the utility model electric automobile power battery system, function admirable, long service life.When automobile normally travels stably; the ferric phosphate lithium ion battery group is when providing main output power; can be to carrying out boost charge owing to descend at the carrying capacity SOC of high power discharge time discharge main body battery pack (lead-acid battery, cadmium nickel or Ni-MH battery); can avoid discharge main body battery pack deep discharge or overdischarge; can protect discharge main body battery pack effectively, increase its useful life.
3, many battery pack of the utility model electric automobile power battery system, simple in structure, the design ingenious, easy to use.Adopt lead-acid battery, cadmium nickel or Ni-MH battery as discharge main body battery pack, the ferric phosphate lithium ion battery group is as the batteries in parallel connection group, the parallel connection electronic devices and components adopt heavy-duty diode, during conversion without any other operation, each process can be changed automatically, guaranteed that the present invention has higher performance and lower cost, be very easy to use, safe and reliable.
4, many battery pack of the utility model electric automobile power battery system, through practical application on the experiment electric automobile, the lead-acid battery series connection of adopting 5 12V/60Ah is as discharge main body battery pack, (every group with 532 of 26650 ferric phosphate lithium ion battery cells, 28 and 19 strings as the batteries in parallel connection group for 3 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah), electric automobile accelerates to 50km/h when shared 11.8 seconds from 0; 50km/h continuation of the journey mileage 280km, the overall performance index is good.Experiment electric automobile important technological parameters sees the following form:
Experiment electric automobile important technological parameters:
| Sequence | Project | Index | |
| 1 | The vehicle title | Pure |
|
| 2 | Length and width height (mm) | 3855×1680×1500 | |
| 3 | Wheelbase (mm) | 2425 | |
| 4 | Wheelspan (front/rear) (mm) | 1440/1420 | |
| 5 | Complete vehicle curb weight (kg) | 1115 | |
| 6 | Minimum ground clearance (mm) | 155 | |
| 7 | Seating capacity | 5 | |
| 8 | Min. turning radius (m) | 9.8 | |
| 9 | Max. speed (km/h) | 80 | |
| 10 | Maximum climbing (°) | 25 | |
| 11 | The system configuration type of drive | Rear drive | |
| 12 | Steering | Rack and pinion steering | |
| 13 | The parking braking form | Preceding braking system ventilated disc brake ABS+EBD (brake anti-blocking and anti-the sideslip) | |
| 14 | Brake system | Drum behind the shroud | |
| 15 | Speed change | Preceding 3 grades of hand gears of mechanical type | |
| 16 | Drive system | Front suspension MacPherson type and driving drive system | |
| 17 | Power of motor (kW) | 4 |
Four, description of drawings:
Fig. 1: one of structural representation of many battery pack electric automobile power battery system;
Fig. 2: two of the structural representation of many battery pack electric automobile power battery system;
Fig. 3: three of the structural representation of many battery pack electric automobile power battery system.
Five, embodiment:
Embodiment one: referring to Fig. 1, many battery pack of the utility model electric automobile power battery system, contain discharge main body battery pack 1, auxiliary discharge battery pack 2, the nominal voltage of discharge main body battery pack 1 and auxiliary discharge battery pack 2 is complementary, auxiliary discharge battery pack 2 adopts ferric phosphate lithium ion battery, auxiliary discharge battery pack 2 is by heavy-duty diode and 1 parallel connection of discharge main body battery pack, the positive pole of described heavy-duty diode links to each other with the positive pole of auxiliary discharge battery pack 2, the negative pole of heavy-duty diode links to each other with the positive pole of discharge main body battery pack 1, and the negative pole of discharge main body battery pack 1 and auxiliary discharge battery pack 2 is connected.
Embodiment two: referring to Fig. 2 or Fig. 3, many battery pack of the utility model electric automobile power battery system, its version and embodiment one are slightly different: the auxiliary discharge battery pack can be composed in parallel by N ferric phosphate lithium ion battery unit, each ferric phosphate lithium ion battery unit respectively is connected by the positive pole of a heavy-duty diode that is just connecing with discharge main body battery pack, and N is a natural number.
Among Fig. 2, the auxiliary discharge battery pack is composed in parallel by 2 ferric phosphate lithium ion battery unit; Among Fig. 3, the auxiliary discharge battery pack is composed in parallel by 3 ferric phosphate lithium ion battery unit; Number in the figure is identical with embodiment one, represents same meaning.
Embodiment three: many battery pack of present embodiment electric automobile power battery system, and discharge main body battery pack adopts lead-acid battery, and discharge main body battery pack is composed in series by M lead-acid battery cells; The capacity units in series that each ferric phosphate lithium ion battery unit in parallel of forming the auxiliary discharge battery pack is formed after by L ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack satisfies with the nominal voltage of discharge main body battery pack: L * 3.33-M * 2.08)＜M * 0.2, wherein M, L are natural number.
Embodiment four: many battery pack of present embodiment electric automobile power battery system, and discharge main body battery pack is cadmium nickel or Ni-MH battery, discharge main body battery pack is by H cadmium nickel or Ni-MH battery is monomer series-connected forms; The capacity units in series that each ferric phosphate lithium ion battery unit in parallel of forming the auxiliary discharge battery pack is formed after by P ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack satisfies formula with the nominal voltage of discharge main body battery pack: (P * 3.33-H * 1.30)＜H * 0.1, wherein H, P are natural number.
Embodiment five: referring to Fig. 1.Present embodiment adopts the lead-acid battery series connection of 4 12V/60Ah (24 lead-acid battery monomers) as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 49.92V.1 group of ferric phosphate lithium ion battery group is as the auxiliary discharge battery pack, with 420 of 26650 ferric phosphate lithium ion cells, and 28 and 15 strings (every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 49.95V.Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 48V/144Ah.
Because electronic component in parallel has adopted heavy-duty diode, the unilateral conduction of diode has determined back in parallel N group ferric phosphate lithium ion battery to carry out floating charge to discharge main body battery pack (lead-acid battery, cadmium nickel or Ni-MH battery).So must be through careful calculating, make the voltage of the N group ferric phosphate lithium ion battery after the parallel connection can not be higher than the overtension of discharge main body battery pack, otherwise discharge main body battery pack will be damaged because of overcharging.Can not be low excessively, the N group ferric phosphate lithium ion battery after the low excessively then parallel connection does not have the effect of output electric energy.
Embodiment six: referring to Fig. 2, the lead-acid battery series connection of adopting 5 12V/60Ah (30 lead-acid battery monomers) is as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 62.4V; (every group with 532 of 26650 ferric phosphate lithium ion battery cells, 28 and 19 strings as the batteries in parallel connection group to adopt 2 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 63.27V.Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 60V/228Ah.
Embodiment seven: referring to Fig. 3, present embodiment adopts the lead-acid battery series connection of 10 12V/60Ah (60 lead-acid battery monomers) as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 124.8V.(every group with 1064 of 26650 ferric phosphate lithium ion battery cells, 28 and 38 strings as the batteries in parallel connection group for 3 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 126.54V.38 * 3.33-60 * 2.08 ≈ 1.34V; Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 120V/312Ah.
Embodiment eight: referring to Fig. 3, present embodiment adopts the lead-acid battery series connection of 25 12V/60Ah (150 lead-acid battery monomers) as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 312.0V.(every group with 2632 of 26650 ferric phosphate lithium ion battery cells, 28 and 94 strings as the batteries in parallel connection group for 3 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 313.02V.60 * 3.33-94 * 2.08 ≈ 1.02V; Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 300V/312Ah.
Embodiment nine: referring to Fig. 1, the ickel-cadmium cell series connection of adopting 38 1.2V/50Ah is as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 49.40V.(every group with 420 of 26650 ferric phosphate lithium ion battery cells, 28 and 15 strings as the batteries in parallel connection group for 1 group of ferric phosphate lithium ion battery group; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 49.95V.Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 48V/134Ah.
Embodiment ten: referring to Fig. 2, the ickel-cadmium cell series connection of adopting 49 1.2V/50Ah is as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 63.70V.(every group with 532 of 26650 ferric phosphate lithium ion battery cells, 28 and 19 strings as the batteries in parallel connection group for 2 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 63.27V.L * 3.33-P * 1.30 ≈-0.43V; Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 60V/218Ah.
Embodiment 11: referring to Fig. 3, the ickel-cadmium cell series connection of adopting 97 1.2V/50Ah is as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 126.1V.(every group with 1064 of 26650 ferric phosphate lithium ion battery cells, 28 and 38 strings as the batteries in parallel connection group for 3 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 126.54V.L * 3.33-P * 1.30 ≈ 0.44; Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 120V/302Ah.
Embodiment 12: referring to Fig. 3, the ickel-cadmium cell series connection of adopting 240 1.2V/50Ah is as discharge main body battery pack, and the open circuit voltage that is full of behind the electricity is about 312.0V.(every group with 2632 of 26650 ferric phosphate lithium ion battery cells, 28 and 94 strings as the batteries in parallel connection group for 3 groups of ferric phosphate lithium ion battery groups; Every cell 3Ah); The open circuit voltage that is full of behind the electricity is about 313.02V.L * 3.33-P * 1.30 ≈ 1.02; Electronic component in parallel adopts the 100A diode.Many battery pack of present embodiment electric automobile power battery system can provide the energy of 288V/302Ah.
Embodiment 13: present embodiment is basic identical with embodiment nine, and difference is to adopt 190 1.2V/10AhF type Ni-MH batteries, and 5 and 38 strings replace the ickel-cadmium cell series connection of 38 1.2V/50Ah as discharge main body battery pack.
Embodiment 14: present embodiment is basic identical with embodiment ten, and difference is to adopt 245 1.2V/10AhF type Ni-MH batteries, and 5 and 49 strings replace the ickel-cadmium cell series connection of 49 1.2V/50Ah as discharge main body battery pack.
Embodiment 15: present embodiment is originally identical with the embodiment hendecyl, and difference is to adopt 485 1.2V/10AhF type Ni-MH batteries, and 5 and 97 strings replace the ickel-cadmium cells series connection of 97 1.2V/50Ah as the main body battery pack of discharging.
Embodiment 16: present embodiment is originally identical with the embodiment dodecyl, and difference is to adopt 1200 1.2V/10AhF type Ni-MH batteries, and 5 and 240 strings replace the ickel-cadmium cells series connection of 240 1.2V/50Ah as the main body battery pack of discharging.
Claims (9)
1. the system of battery pack electric automobile power battery more than a kind, contain discharge main body battery pack (1), auxiliary discharge battery pack (2), the nominal voltage of described discharge main body battery pack (1) and auxiliary discharge battery pack (2) is complementary, it is characterized in that: described auxiliary discharge battery pack (2) adopts ferric phosphate lithium ion battery, auxiliary discharge battery pack (2) is by heavy-duty diode and the parallel connection of discharge main body battery pack (1), the positive pole of described heavy-duty diode links to each other with the positive pole of auxiliary discharge battery pack (2), the negative pole of heavy-duty diode links to each other with the positive pole of discharge main body battery pack (1), and described discharge main body battery pack (1) is connected with the negative pole of auxiliary discharge battery pack (2).
2. many battery pack electric automobile power battery according to claim 1 system is characterized in that: the capacity units in series that described auxiliary discharge battery pack (2) is formed after by the ferric phosphate lithium ion battery monomer of some or the ferric phosphate lithium ion battery monomer parallel connection by some is formed.
3. many battery pack electric automobile power battery according to claim 2 system, it is characterized in that: discharge main body battery pack (1) adopts lead-acid battery, discharge main body battery pack (1) is composed in series by M lead-acid battery cells, the capacity units in series that auxiliary discharge battery pack (2) is formed after by L ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(L * 3.33-M * 2.08)＜M * 0.2, wherein M, L is a natural number.
4. many battery pack electric automobile power battery according to claim 2 system is characterized in that: described discharge main body battery pack (1) is cadmium nickel or Ni-MH battery, and discharge main body battery pack (1) is by H cadmium nickel or Ni-MH battery is monomer series-connected forms; The capacity units in series that the auxiliary discharge battery pack is formed after by P ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(P * 3.33-H * 1.30)＜H * 0.1, wherein H, P are natural number.
5. according to each described many battery pack electric automobile power battery system of claim 1～4, it is characterized in that: the power of described heavy-duty diode is greater than 100A.
6. many battery pack electric automobile power battery according to claim 1 system, it is characterized in that: described auxiliary discharge battery pack (2) is composed in parallel by N ferric phosphate lithium ion battery unit, the capacity units in series that each ferric phosphate lithium ion battery unit is formed after by the ferric phosphate lithium ion battery monomer of some or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, and described N is a natural number.
7. many battery pack electric automobile power battery according to claim 6 system, it is characterized in that: discharge main body battery pack (1) adopts lead-acid battery, discharge main body battery pack (1) is composed in series by M lead-acid battery cells, the capacity units in series that each ferric phosphate lithium ion battery unit in parallel of forming auxiliary discharge battery pack (2) is formed after by L ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(L * 3.33-M * 2.08)＜M * 0.2, wherein M, L is a natural number.
8. many battery pack electric automobile power battery according to claim 6 system is characterized in that: described discharge main body battery pack (1) is cadmium nickel or Ni-MH battery, and discharge main body battery pack (1) is by H cadmium nickel or Ni-MH battery is monomer series-connected forms; The capacity units in series that each ferric phosphate lithium ion battery unit in parallel of forming auxiliary discharge battery pack (2) is formed after by P ferric phosphate lithium ion battery monomer or the ferric phosphate lithium ion battery monomer parallel connection by some is formed, the nominal voltage of auxiliary discharge battery pack (2) satisfies formula with the nominal voltage of discharge main body battery pack (1) :-0.5＜(P * 3.33-H * 1.30)＜H * 0.1, wherein H, P are natural number.
9. according to claim 6,7 or 8 described many battery pack electric automobile power battery systems, it is characterized in that: each ferric phosphate lithium ion battery unit respectively is connected by the positive pole of a heavy-duty diode that is just connecing with discharge main body battery pack (1).
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| CN2010202472752U CN201766129U (en) | 2010-07-05 | 2010-07-05 | Electric automobile power battery system with multiple battery sets |
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| CN2010202472752U CN201766129U (en) | 2010-07-05 | 2010-07-05 | Electric automobile power battery system with multiple battery sets |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908662A (en) * | 2010-07-05 | 2010-12-08 | 河南联合新能源有限公司 | Electromobile combination power battery |
| CN103733421A (en) * | 2011-08-30 | 2014-04-16 | 丰田自动车株式会社 | Vehicle |
| CN109986998A (en) * | 2019-03-21 | 2019-07-09 | 北京长城华冠汽车科技股份有限公司 | A kind of reliability of the battery case of electric car determines method and apparatus |
| CN114465304A (en) * | 2022-01-12 | 2022-05-10 | 浙江霖润新能源科技有限公司 | A vehicle-mounted hybrid power system |
-
2010
- 2010-07-05 CN CN2010202472752U patent/CN201766129U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908662A (en) * | 2010-07-05 | 2010-12-08 | 河南联合新能源有限公司 | Electromobile combination power battery |
| CN103733421A (en) * | 2011-08-30 | 2014-04-16 | 丰田自动车株式会社 | Vehicle |
| CN103733421B (en) * | 2011-08-30 | 2016-05-11 | 丰田自动车株式会社 | Vehicle |
| CN109986998A (en) * | 2019-03-21 | 2019-07-09 | 北京长城华冠汽车科技股份有限公司 | A kind of reliability of the battery case of electric car determines method and apparatus |
| CN114465304A (en) * | 2022-01-12 | 2022-05-10 | 浙江霖润新能源科技有限公司 | A vehicle-mounted hybrid power system |
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