CN101908662A - Electromobile combination power battery - Google Patents
Electromobile combination power battery Download PDFInfo
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- CN101908662A CN101908662A CN2010102173257A CN201010217325A CN101908662A CN 101908662 A CN101908662 A CN 101908662A CN 2010102173257 A CN2010102173257 A CN 2010102173257A CN 201010217325 A CN201010217325 A CN 201010217325A CN 101908662 A CN101908662 A CN 101908662A
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Abstract
The invention relates to an electromobile combination power battery. The electromobile combination power battery comprises a main discharge battery set and an auxiliary discharge battery set, wherein the nominal voltage of the main discharge battery set is matched with the nominal voltage of the auxiliary discharge battery set; the auxiliary discharge battery set adopts lithium iron phosphate lithium ion batteries; the auxiliary discharge battery set is connected with the main discharge battery set in parallel through a high-power diode. In the electromobile combination power battery of the invention, lead-acid batteries, cadmium nickel or nickel-metal hydride batteries, and the lithium iron phosphate lithium ion batteries can be used in a mixing way, the lead-acid batteries, and cadmium nickel or nickel-metal hydride batteries are used as the main discharge battery set, and the lithium iron phosphate lithium ion battery set is used as the auxiliary discharge battery set to foster the strengths and circumvent weakness. The invention can meet the technical requirements of high multiplying power discharge performance, high output voltage, high capacity charge, and the like of the electromobile power battery. The electronic elements are connected in parallel through the high-power diode, and no other operation is required for conversion. The invention has the advantages of high performance, low cost, convenient operation, safety and reliability.
Description
One, technical field: the present invention relates to a kind of electric automobile power battery, particularly relate to a kind of electromobile combination power battery.
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, summary of the invention:
The present invention is directed to the prior art deficiency, a kind of electromobile combination power battery 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 the specification requirement such as high-rate discharge ability, high output voltage, highly charged capacity of electric automobile power battery.
The technical solution adopted in the present invention:
A kind of electromobile combination power battery, 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 electromobile combination power battery, auxiliary discharge battery pack (2) are 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.
Described electromobile combination power battery, 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 electromobile combination power battery, 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 electromobile combination power battery, the power of heavy-duty diode is greater than 100A.
Described electromobile combination power battery, 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 electromobile combination power battery, 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 electromobile combination power battery, 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 electromobile combination power battery, each ferric phosphate lithium ion battery unit respectively are 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 invention:
1, the present invention 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, electromobile combination power battery of the present invention, 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, electromobile combination power battery of the present invention, 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, electromobile combination power battery of the present invention, 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 electromobile combination power battery structural representation;
Fig. 2: two of electromobile combination power battery structural representation;
Fig. 3: three of electromobile combination power battery structural representation.
Five, embodiment:
Embodiment one: referring to Fig. 1, electromobile combination power battery of the present invention contains 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, electromobile combination power battery of the present invention, 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: the present embodiment electromobile combination power battery, 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: the present embodiment electromobile combination power battery, 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.The present embodiment electromobile combination power battery 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.Present embodiment electromobile combination 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.The present embodiment electromobile combination power battery 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.The present embodiment electromobile combination power battery 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.The present embodiment electromobile combination power battery 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.The present embodiment electromobile combination power battery 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.The present embodiment electromobile combination power battery 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.The present embodiment electromobile combination power battery 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. electromobile combination power battery, 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. electromobile combination power battery according to claim 1 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. electromobile combination power battery according to claim 2, 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. electromobile combination power battery according to claim 2 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 electromobile combination power battery of claim 1～4, it is characterized in that: the power of described heavy-duty diode is greater than 100A.
6. electromobile combination power battery according to claim 1, 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. electromobile combination power battery according to claim 6, 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. electromobile combination power battery according to claim 6 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 electromobile combination power batteries, 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761162A (en) * | 2012-07-19 | 2012-10-31 | 四川长虹电源有限责任公司 | Onboard mixing power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248216A (en) * | 2012-02-08 | 2013-08-14 | F·波尔希名誉工学博士公司 | Converter apparatus for a motor vehicle comprising a high-voltage system and operating method therefor |
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| CN102761162B (en) * | 2012-07-19 | 2015-05-06 | 四川长虹电源有限责任公司 | Onboard mixing power supply system |
| US9812732B2 (en) | 2013-08-16 | 2017-11-07 | Johnson Controls Technology Company | Dual storage system and method with lithium ion and lead acid battery cells |
| CN108140868A (en) * | 2015-09-29 | 2018-06-08 | 株式会社村田制作所 | Accumulator group |
| CN108140868B (en) * | 2015-09-29 | 2021-03-23 | 株式会社村田制作所 | Accumulator battery |
| US11670954B2 (en) | 2016-09-15 | 2023-06-06 | Form Energy, Inc. | Hybrid battery system |
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