CN205195388U - A power supply unit for starting car - Google Patents
A power supply unit for starting car Download PDFInfo
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- CN205195388U CN205195388U CN201520954375.1U CN201520954375U CN205195388U CN 205195388 U CN205195388 U CN 205195388U CN 201520954375 U CN201520954375 U CN 201520954375U CN 205195388 U CN205195388 U CN 205195388U
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- lithium
- ion capacitor
- capacitor module
- secondary cell
- supply unit
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Abstract
The utility model discloses a power supply unit for starting car, its power supply unit is including driving internal -combustion engine moving starter, and the power supply of this starter is the lithium ion capacitor module. The utility model discloses full play lithium ion capacitor's characteristic, high power density, low temperature charge -discharge ability, long circulation life and high energy density and high voltage holding capacity.
Description
Technical field
The utility model relates to a kind of supply unit for starting automobile.
Background technology
Startup power supply mainly using lead acid accumulator as automobile in prior art, but storage battery but also exists the defect that self cannot make up: poor performance at low temperatures, high magnification fan-out capability is on self producing irreversible impact, and self discharge ability is also higher.
Determined by the architectural characteristic of storage battery, under low-temperature condition, the charge acceptance of battery, charge efficiency, capacity all can decline, if motor vehicle load excessive (heavy-current discharge), long-time heavy-current discharge, the actual discharge capacity of battery will become less.This is also dissatisfactory reason during all storage batterys use in the winter time.The size of internal storage battery DC internal resistance along with ambient temperature and environment for use change and change.Under low temperature environment particularly below-25 DEG C, the charge acceptance of storage battery seriously glides, and does not reach its starting resistor even at all; In addition, its discharge capacity significantly will decline along with the reduction of temperature, even may discharge capability useless.When ambient temperature is down to less than 0 DEG C, temperature often reduces by 10 DEG C, and internal resistance about increases about 15%, because sulfuric acid solution viscosity becomes large, so increase sulfuric acid solution resistance, and has increased the weight of electrode polarization impact, and battery capacity can obviously reduce.
In normal conditions of use, starter the immediate current started be run well time several times of rated current, so cause storage battery instantaneous voltage to decline to a great extent, degradation.And storage battery is longer as the startup power supply required time that charges after energy is finished using; And storage battery cannot use need discarded time, the environmental pollutions such as heavy metal lead are serious, limit the application of storage battery.
Meanwhile, storage battery the moon self-discharge rate up to 30%, therefore, at long-term non-automobile, needing every three months to start once, is charge in batteries a period of time.This limits to some extent to the application of storage battery equally.
In order to improve the performance of automobile starting power supply, the mode of ultracapacitor multiple-connected battery is used to start automobile, such as patent CN202429148U.Ultracapacitor has the features such as capacity is large, power is high, the life-span is long, low-temperature characteristics is good and pollution-free, can in parallelly with storage battery use.In automobile starting process, utilize the momentary high power of ultracapacitor to power for starter, make greatly increase the useful life of storage battery like this; But the self-discharge rate of ultracapacitor self is very big, and substantially within 3 days, will discharge, this just greatly limit the use of ultracapacitor.
Lithium ion battery, compared with storage battery, obviously can find that its self-discharge rate is very low, and substantially place 1 year, electricity also can maintain 80%; The service life cycle of lithium ion battery is far above storage battery.Therefore, patent CN104037446A directly substitutes storage battery as automobile starting power supply with lithium ion battery, but does not thoroughly solve storage battery yet as the problem existing for automobile starting power supply, relates generally to the ability of high-power instantaneous discharge.
In addition, also having another kind of replaced type to start supply unit is utilize ultracapacitor to replace storage battery, such as patent CN203827004U, CN202978396U.In such a system, the Main Function of storage battery charges for ultracapacitor and powers for car internal burden.This system does not still change the drawback that ultracapacitor self discharge seriously causes a large amount of energy loss, needs again to charge to ultracapacitor before again starting.
Utility model content
Technical problem to be solved in the utility model is, in order to solve the shortcoming existed in existing automobile starting power technology, and providing a kind of supply unit for automobile starting, can extend service life cycle, improves power density, optimizes cryogenic discharging characteristic etc.
Lithium-ion capacitor adopts lithium ion battery and ultracapacitor mixed structure, its positive pole adopts the positive pole of ultracapacitor, negative pole adopts the negative pole of lithium ion battery, has the characteristic of the high power density (its power density is much larger than lead acid accumulator) of ultracapacitor, long-life characteristics and lithium ion battery high-energy-density concurrently.Itself have very high voltage holding capability, normal temperature 25 DEG C is placed 3 months, voltage drop≤5%; Safety in operation, the reliability of wide serviceability temperature scope (-40 DEG C ~ 70 DEG C).
For solving the technical problem that proposes, and in view of the excellent properties of lithium-ion capacitor, the supply unit that the utility model is used for automobile starting comprises the starter driving internal combustion engine operation, and the power supply of this starter is lithium-ion capacitor module.
Further, this supply unit also arranges the secondary cell of promising lithium-ion capacitor module charging.
Further, this supply unit also arranges the generator of promising secondary cell charge, and described generator is operated by internal-combustion engine drives.
Further, described lithium-ion capacitor module connects starter by ignition switch, and form electric discharge closed-loop path, described starter is connected with car combustion engine;
Secondary cell and lithium-ion capacitor module are connected to form the first charging closed-loop path, are provided with the unidirectional charging module making secondary cell to the unidirectional charging of lithium-ion capacitor module between secondary cell and lithium-ion capacitor module;
The formation second of connecting with secondary cell of described generator is charged closed-loop path.
Further, the secondary cell of described secondary battery voltage 12V is any one in storage battery, lithium ion battery, lithium ion polymer battery, nickel-cadmium cell or Ni-MH battery.
Further, described unidirectional charging module is Unidirectional direct-current power supply.
Further, described lithium-ion capacitor module comprises two positive terminals and a negative pole end,
Second positive terminal of described lithium-ion capacitor module connects starter one end by ignition switch, and the other end of starter connects the negative pole end of lithium-ion capacitor module;
Positive terminal one end of described Unidirectional direct-current power supply is connected to the positive terminal of secondary cell, and the other end is connected to the first positive terminal of lithium-ion capacitor module, and conducting direction is first positive terminal of anode of secondary battery end to lithium-ion capacitor module; The negative pole end negative pole end of conducting secondary cell and the negative pole end of lithium-ion capacitor module all the time of Unidirectional direct-current power supply.
Further, described unidirectional charging module can also be the unilateral diode of series connection and current-limiting resistance, and current-limiting resistance can make secondary cell smaller to lithium-ion capacitor module charging current, effectively increases the useful life of secondary cell.
Further, described lithium-ion capacitor module comprises two positive terminals and a negative pole end,
Second positive terminal of described lithium-ion capacitor module connects starter one end by ignition switch, and the other end of starter connects the negative pole end of lithium-ion capacitor module;
The unilateral diode of series connection and current-limiting resistance, one end is connected to the positive terminal of secondary cell, the other end is connected to the first positive terminal of lithium-ion capacitor module, and the conducting direction of described unilateral diode is first positive terminal of anode of secondary battery end to lithium-ion capacitor module.
The utility model has given full play to the characteristic of lithium-ion capacitor, high power density, low temperature charging and discharging capabilities, long circulating useful life and high-energy-density and high voltage hold facility, compensate for storage battery as shortcoming during automobile starting power supply.
This device adopts secondary cell to power to lithium-ion capacitor, lithium-ion capacitor is directly powered to starter, starter drives electrical power generators, the pattern that generator is powered to secondary cell, the momentary high power electric discharge of secondary cell can be effectively prevent, the electric discharge of the momentary high power especially under cryogenic conditions, relatively low to the instructions for use of secondary cell.
Because lithium-ion capacitor has high voltage hold facility, therefore need not worry that some months does not use and causes starting automobile.
Again because lithium-ion capacitor has high security in wide temperature range and high stability, therefore this automobile starting supply unit can be non-maintaining, and need not be similar to storage battery, within 1 year, safeguards once.
Again due to the high power density of lithium-ion capacitor, its value is far above the power density of storage battery, therefore meeting under identical startup service condition, the quantity needed for lithium-ion capacitor significantly reduces, and then makes the weight and volume of automobile starting supply unit have very large saving.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the utility model embodiment 1;
Fig. 2 is the circuit theory schematic diagram of the utility model embodiment 2;
Fig. 3 is the circuit theory schematic diagram of the utility model embodiment 3.
In Fig. 1: MG: starter-generator; QC: starting contactor; XK: knife switch; LIC: lithium-ion capacitor group.
In Fig. 2: 12V secondary cell BAT12V; Anode of secondary battery end+; Secondary battery cathode is extreme-; Unidirectional direct-current power supply DC/DC; Lithium-ion capacitor module LIC; Lithium-ion capacitor first positive terminal B+; Lithium-ion capacitor second positive terminal S+; Lithium-ion capacitor negative pole end GND; Ignition switch S; Starter Motor; Generator Generator.
In Fig. 3: 12V secondary cell BAT12V; Anode of secondary battery end+; Secondary battery cathode is extreme-; Unilateral diode D; Current-limiting resistance R; Lithium-ion capacitor module LIC; Lithium-ion capacitor first positive terminal B+; Lithium-ion capacitor second positive terminal S+; Lithium-ion capacitor negative pole end GND; Ignition switch S; Starter Motor; Generator Generator.
Embodiment
embodiment 1: this is used for the supply unit of automobile starting as shown in Figure 1, mainly comprises:
The starting contactor QC of internal combustion engine start circuit can be communicated with;
Internal combustion engine operation can be driven during startup to having started, and the starter-generator MG driving self continuous running and generate electricity in internal combustion engine normal operation, namely this starter-generator MG integrates startup, electricity generate function, can use respectively as starter and generator;
High-power power supply can be carried out to starter-generator MG during startup, and the lithium-ion capacitor group LIC by the starter-generator MG generated electricity, it charged after having started.
In order to the voltage of lithium-ion capacitor group LIC can be monitored, a knife switch XK is also provided with in this supply unit, lithium-ion capacitor group LIC connects instrument by this knife switch XK, instrument at least includes voltmeter, for monitoring the voltage of lithium-ion capacitor group LIC, whether meet entry condition; Also can comprise other components and parts such as indicator light, the instrument such as voltmeter described in this are arranged at operating room in diesel locomotive simultaneously; In addition, this knife switch XK also plays a part to be communicated with the lithium-ion capacitor group LIC in internal combustion engine start circuit and starting contactor QC.
This supply unit is by the startup of following process implementation automobile:
First closed knife switch XK, checks the numerical value of the voltmeter connecting lithium-ion capacitor group LIC, whether meets entry condition.If do not met, need ground charging device to carry out quick charge to lithium-ion capacitor group LIC, but this situation just can occur under substantially only the prerequisite that not use in the diesel locomotive several months.After knife switch XK is closed, lithium-ion capacitor module LIC also can power to the instrument in operating room, indicator light even load simultaneously.
Open starting contactor QC, make lithium-ion capacitor group LIC carry out powerful power supply to starter-generator MG, make it operate (electric energy from lithium-ion capacitor group LIC being transferred to the kinetic energy driving internal combustion engine operation).Starter-generator MG(uses as starter) operating then drives internal combustion engine operation, and make internal combustion engine reach rapidly ignition point rotating speed, enter normal operation, now internal combustion engine start completes.Starter-generator MG continuous running can be driven in internal combustion engine normal operation, starter-generator MG(is used as generator) generating electricity and charging to lithium-ion capacitor group LIC (transfers the kinetic energy of internal-combustion engine drives ato unit MG to electric energy, be that lithium-ion capacitor group LIC charges simultaneously, lithium-ion capacitor group LIC stores the high voltage energy that starter-generator MG produces), after lithium-ion capacitor group LIC reaches rated voltage, floating charge is carried out to it, until internal combustion engine shuts down.Be in lithium-ion capacitor module LIC charging process at starter-generator, the electric energy that instrument and indicator light even load for operating room in diesel locomotive provide comes from the electric energy of starter-generator.
When internal combustion engine needs to shut down, close starting contactor QC; Internal combustion engine shuts down, and starter-generator MG stops generating, no longer charges to lithium-ion capacitor group LIC.Open knife switch XK, now lithium-ion capacitor LIC and system thoroughly disconnect, and in the raw, treat internal combustion engine start next time.
embodiment 2:
This is used for the supply unit of automobile starting as shown in Figure 2, comprises
(1), 12V secondary cell BAT12V, this 12V secondary cell BAT12V there is an anode of secondary battery end+and secondary battery cathode extreme-, this secondary cell can be storage battery, lithium ion battery (also comprising ferric phosphate lithium cell and ternary material lithium battery), any one in lithium ion polymer battery, nickel-cadmium cell, Ni-MH battery etc.;
(2), Unidirectional direct-current power supply DC/DC, as unidirectional charging module, stop lithium-ion capacitor module LIC to secondary cell charge, make the charging current of secondary cell to lithium-ion capacitor module LIC smaller simultaneously, effectively increase the useful life of secondary cell;
(3), lithium-ion capacitor module LIC, there are three leading-out terminals, be respectively lithium-ion capacitor first positive terminal B+, lithium-ion capacitor second positive terminal S+ and lithium-ion capacitor negative pole end GND;
(4), ignition switch S;
(5), starter Motor, connect car combustion engine;
(6), generator Generator, connect car combustion engine.
One end of Unidirectional direct-current power supply DC/DC positive terminal be connected to the positive terminal of secondary cell+, the other end is connected to the first positive terminal B+ of lithium-ion capacitor module LIC; The negative pole end of Unidirectional direct-current power supply DC/DC be with the negative pole end of secondary cell-, the direct conducting of negative pole end GND of lithium-ion capacitor module LIC, make secondary cell, Unidirectional direct-current power supply DC/DC, lithium-ion capacitor module LIC form the first closed charge circuit.When the undertension of lithium-ion capacitor module LIC is to support the voltage needed for automobile starting, secondary cell converts low-voltage direct-current to high-voltage direct-current by Unidirectional direct-current power supply DC/DC and charges to lithium-ion capacitor module LIC, and controls the size of charging current; Another effect of Unidirectional direct-current power supply DC/DC is when lithium-ion capacitor module LIC powers to starter Motor, avoids current direction secondary cell and causes starting the loss of energy.
The second positive terminal S+ of lithium-ion capacitor module LIC is connected with one end of starter Motor by ignition switch S, and its negative pole end GND is directly connected with the other end of starter Motor and forms closed-loop path of discharging.When ignition switch S closes, lithium-ion capacitor module LIC carries out the power supply of momentary high power to starter Motor, makes it operate and then driving automobile internal combustion engine start.And due to the existence of Unidirectional direct-current power supply DC/DC, lithium-ion capacitor module LIC can not be there is to the generation of the phenomenon of secondary cell charge.
The generator Generator be connected with internal combustion engine is then connected with secondary cell, forms the second closed charge circuit.After car combustion engine startup terminates, lithium-ion capacitor module LIC quits work, and same starter Motor shuts down.Now, car combustion engine enters normal operation, drives the generator Generator be attached thereto to operate, and makes generator Generator generate electricity and charge to secondary cell.The effect of secondary cell is mainly for car internal burden is powered and be that lithium-ion capacitor module LIC charges.
embodiment 3: as shown in Figure 3, as different from Example 2, unidirectional charging module in the present embodiment adopts unilateral diode D and the current-limiting resistance R of series connection, one end be connected to the positive terminal of secondary cell+, the other end is connected to the first positive terminal B+ of lithium-ion capacitor module LIC, and the conducting direction of described unilateral diode D is the first positive terminal B+ of lithium-ion capacitor module LIC.The unilateral diode D connected in a series arrangement and current-limiting resistance R both can be the first positive terminal B+ of current-limiting resistance R near lithium-ion capacitor module LIC, also can be the first positive terminal B+ of unilateral diode D near lithium-ion capacitor module LIC.
Due to the existence of unilateral diode D, lithium-ion capacitor module LIC can not be there is the phenomenon of secondary cell charge is occurred.Current-limiting resistance R can make the charging current of secondary cell to lithium-ion capacitor module LIC smaller, effectively increases the useful life of secondary cell.
All the other do not put forward item with embodiment 1, repeat no more.
For unidirectional charging module, use Unidirectional direct-current power supply DC/DC, the secondary cell of low pressure can be made to charge to the lithium-ion capacitor module LIC of high pressure, avoid the problem that when adopting unilateral diode D and current-limiting resistance R coupling, secondary battery voltage can not be charged to lithium-ion capacitor module LIC lower than lithium-ion capacitor module LIC.But, secondary battery voltage is general only not using automobile for a long time lower than the situation of lithium-ion capacitor module LIC voltage, just can cause when secondary cell self discharge is serious.And the charging of not needs secondary cell when lithium-ion capacitor module LIC voltage meets entry condition, therefore unilateral diode D and current-limiting resistance R coupling is adopted to be feasible, and unilateral diode D and current-limiting resistance R, exist and reduce volume, the advantage reduced costs.As lithium-ion capacitor module LIC voltage cannot meet entry condition, also cannot accept the charging of secondary cell, can also be charged by external equipment.
Embodiment 2 and embodiment 3 all realize starting to automobile by following process:
Comprise:
(1), vehicle activation signal is received, ignition switch closes, connect electric discharge closed-loop path, lithium-ion capacitor module provides momentary high power electric current for starter, makes it drive internal combustion engine operation, and internal combustion engine rotates rapidly and after reaching ignition point rotating speed, internal combustion engine start completes, enter normal operation, ignition switch disconnects, and electric discharge closed-loop path disconnects;
(2), after internal combustion engine enters normal operation, drive electrical generators operates, electrical power generators, second charging closed-loop path is connected, and generator, to after secondary cell charge to rated voltage, continues floating charge and shuts down to internal combustion engine, generator stops generating, and the second charging closed-loop path disconnects;
(3), when the voltage of lithium-ion capacitor module can not meet the once required voltage conditions of automobile starting, and when secondary cell has sufficient voltage to charge to lithium-ion capacitor module, unidirectional charging module conducting first is charged closed-loop path, and secondary cell charges to its rated voltage to lithium-ion capacitor module or charges to and at least can meet an automobile starting required voltage condition;
Or, when the voltage of lithium-ion capacitor module at least can meet an automobile starting required voltage condition, and secondary cell has not had energy to continue as lithium-ion capacitor module to be charged to when at least can meet many one-shots automobile required voltage again, unidirectional charging module first charges closed-loop path;
Or after lithium-ion capacitor module reaches its rated voltage, and when secondary cell still has a remaining energy, unidirectional charging module disconnects the first charging closed-loop path, and lithium-ion capacitor module in the raw, treats automobile starting next time.
Claims (9)
1., for a supply unit for automobile starting, comprise the starter driving internal combustion engine operation, it is characterized in that: the power supply of this starter is lithium-ion capacitor module.
2. according to claim 1 for the supply unit of automobile starting, it is characterized in that: this supply unit also arranges the secondary cell of promising lithium-ion capacitor module charging.
3. according to claim 2 for the supply unit of automobile starting, it is characterized in that: this supply unit also arranges the generator of promising secondary cell charge, described generator is operated by internal-combustion engine drives.
4., according to claim 3 for the supply unit of automobile starting, it is characterized in that:
Described lithium-ion capacitor module connects starter by ignition switch, and form electric discharge closed-loop path, described starter is connected with car combustion engine;
Secondary cell and lithium-ion capacitor module are connected to form the first charging closed-loop path, are provided with the unidirectional charging module making secondary cell to the unidirectional charging of lithium-ion capacitor module between secondary cell and lithium-ion capacitor module;
The formation second of connecting with secondary cell of described generator is charged closed-loop path.
5. according to Claims 2 or 3 or 4 for the supply unit of automobile starting, it is characterized in that: described secondary cell is any one in storage battery, lithium ion battery, lithium ion polymer battery, nickel-cadmium cell or Ni-MH battery.
6. according to claim 4 for the supply unit of automobile starting, it is characterized in that: described unidirectional charging module is Unidirectional direct-current power supply.
7. according to claim 6 for the supply unit of automobile starting, it is characterized in that: described lithium-ion capacitor module comprises two positive terminals and a negative pole end,
Second positive terminal of described lithium-ion capacitor module connects starter one end by ignition switch, and the other end of starter connects the negative pole end of lithium-ion capacitor module;
Positive terminal one end of described Unidirectional direct-current power supply is connected to the positive terminal of secondary cell, and the other end is connected to the first positive terminal of lithium-ion capacitor module, and conducting direction is first positive terminal of anode of secondary battery end to lithium-ion capacitor module; The negative pole end negative pole end of conducting secondary cell and the negative pole end of lithium-ion capacitor module all the time of Unidirectional direct-current power supply.
8. according to claim 4 for the supply unit of automobile starting, it is characterized in that: described unidirectional charging module is unilateral diode and the current-limiting resistance of series connection.
9. according to claim 8 for the supply unit of automobile starting, it is characterized in that: described lithium-ion capacitor module comprises two positive terminals and a negative pole end,
Second positive terminal of described lithium-ion capacitor module connects starter one end by ignition switch, and the other end of starter connects the negative pole end of lithium-ion capacitor module;
The unilateral diode of series connection and current-limiting resistance, one end is connected to the positive terminal of secondary cell, the other end is connected to the first positive terminal of lithium-ion capacitor module, and the conducting direction of described unilateral diode is first positive terminal of anode of secondary battery end to lithium-ion capacitor module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954375.1U CN205195388U (en) | 2015-11-25 | 2015-11-25 | A power supply unit for starting car |
| PCT/CN2016/102642 WO2017088613A1 (en) | 2015-11-25 | 2016-10-20 | Power supply device for starting automobile and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954375.1U CN205195388U (en) | 2015-11-25 | 2015-11-25 | A power supply unit for starting car |
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| Publication Number | Publication Date |
|---|---|
| CN205195388U true CN205195388U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520954375.1U Withdrawn - After Issue CN205195388U (en) | 2015-11-25 | 2015-11-25 | A power supply unit for starting car |
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| Country | Link |
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| CN (1) | CN205195388U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634102A (en) * | 2015-11-25 | 2016-06-01 | 上海展枭新能源科技有限公司 | Power supply device for starting automobile and starting control method for power supply device |
| WO2017088613A1 (en) * | 2015-11-25 | 2017-06-01 | 上海展枭新能源科技有限公司 | Power supply device for starting automobile and control method therefor |
| CN106812649A (en) * | 2016-12-30 | 2017-06-09 | 常州格力博有限公司 | Startor of internal combustion engine and its startup method |
| CN106981705A (en) * | 2016-11-17 | 2017-07-25 | 上海展枭新能源科技有限公司 | A kind of car emergency startup power supply device |
-
2015
- 2015-11-25 CN CN201520954375.1U patent/CN205195388U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634102A (en) * | 2015-11-25 | 2016-06-01 | 上海展枭新能源科技有限公司 | Power supply device for starting automobile and starting control method for power supply device |
| WO2017088613A1 (en) * | 2015-11-25 | 2017-06-01 | 上海展枭新能源科技有限公司 | Power supply device for starting automobile and control method therefor |
| CN105634102B (en) * | 2015-11-25 | 2018-11-02 | 上海展枭新能源科技有限公司 | A kind of supply unit and its startup control method for starting automobile |
| CN106981705A (en) * | 2016-11-17 | 2017-07-25 | 上海展枭新能源科技有限公司 | A kind of car emergency startup power supply device |
| CN106812649A (en) * | 2016-12-30 | 2017-06-09 | 常州格力博有限公司 | Startor of internal combustion engine and its startup method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20181102 |