CN2663203Y - Stand by power supply of electric vehicle - Google Patents
Stand by power supply of electric vehicle Download PDFInfo
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- CN2663203Y CN2663203Y CN 200320110492 CN200320110492U CN2663203Y CN 2663203 Y CN2663203 Y CN 2663203Y CN 200320110492 CN200320110492 CN 200320110492 CN 200320110492 U CN200320110492 U CN 200320110492U CN 2663203 Y CN2663203 Y CN 2663203Y
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Abstract
The utility model discloses an electric vehicle reserve power supply, comprising a reserve battery and a connecting switch. The connecting switch is connected between the anode end of the main battery and the anode end of the reserve battery. And a unilateral pressure reducing and power charge circuit branch is also arranged between the anode end of the main battery and the anode end of the reserve battery. The reserve battery uses the same charger with the main battery when the reserve battery is in charging; while the circuit branch passes through the pressure reducing circuit to make the reserve battery always in the float charge state and the main battery always in the circular charge state. The reserve battery is connected in parallel with the main battery to supply power when in discharging to achieve the ideal discharging time. The utility model has the advantages of long useful time and long power supply time.
Description
Technical field
The utility model relates to elec. vehicle, especially the backup power of elec. vehicle.
Background technology
Elec. vehicle mainly refers to Electrical Bicycle and battery-operated motor cycle, be to be the civilian traffic instrument of power by electric power, especially battery-operated motor cycle is to lean on the electric power of battery as drive energy fully, if battery electric power exhausts, battery-driven car can't use, have to shove along, bring great inconvenience to the user.The electric power system of elec. vehicle comprises battery pack, speed regulating handle, controller and motor, gives controller by speed regulating handle output action signal, and the electric energy of battery pack is by the size of controller control outgoing current, with control rotating speed of motor and horsepower output.When the voltage of battery pack was lower than 10.5V/12V, controller carried out the light current protection, and motor can't be worked, till battery pack is recharged again.
The backup power of existing a kind of elec. vehicle, when it does not have electricity at main battery, the one group of emergency battery power supply of connecting, like this, the battery of different electric weight series connection use can cause the low battery over discharge of electric weight to damage fully, even antipole occurs and can not repair.In addition, two battery pack series connection back voltages increase, and all can burn because of superpressure by the motor of the elec. vehicle of rated voltage power supply, controller, light fixture, annunciator etc. originally, so this backup power can't use.
Other has a kind of backup power of elec. vehicle, and its main battery and emergency battery are connected to respectively on the battery-driven car, when main battery does not have electricity, disconnects main battery, manually emergency battery is connected power supply again.Example: main battery is the battery pack of 48V20Ah, voltage is 42V when discharge off, this moment can't outgoing current in the controller circuitry of battery-driven car, if disconnect main battery this moment, insert the emergency battery of one group of 48V6Ah, the internal resistance that this emergency battery uses separately approximately is 400 milliohms when discharge off, under 18 amperes discharge current, the voltage of consumption on the internal resistance of cell is 7.2V, like this, the emergency battery motor-car of can powering travels about 7 kilometers, and its power-on time is shorter, can't satisfy the needs of actual use.And existing elec. vehicle backup power, its emergency battery and main battery are accepted same charging valtage simultaneously and are charged, and like this, seldom the emergency battery of Shi Yonging just can shorten the service life of emergency battery because of charging and dehydration for a long time.
Summary of the invention
Main purpose of the present utility model provides the elec. vehicle backup power of a kind of power-on time length, long service life.
Secondary objective of the present utility model provides a kind of elec. vehicle backup power with over.
The technical solution of the utility model is such: the elec. vehicle backup power, comprise emergency battery and be connected switch, above-mentioned connection switch is connected between the positive terminal of the positive terminal of main battery and above-mentioned emergency battery, and also is connected with a unidirectional step-down charging paths between the positive terminal of the positive terminal of above-mentioned main battery and above-mentioned emergency battery in addition.
Above-mentioned emergency battery also comprises control unit, trigger switch and execution relay, above-mentioned unidirectional step-down charging paths is located in the above-mentioned control unit, above-mentioned trigger switch is connected in the triggering loop of above-mentioned control unit, the relay coil of above-mentioned execution relay is connected in the output loop of above-mentioned control unit, the contact of above-mentioned execution relay is as above-mentioned connection switch, be used to control the break-make between the positive terminal of the positive terminal of main battery and emergency battery, above-mentioned control unit also is provided with the charging control section branch that the voltage sample partial sum that is connected in the main battery positive terminal is connected in the emergency battery positive terminal;
When the voltage of main battery is lower than the setting operating voltage, manually connect trigger switch, trigger control unit, control unit outputs control signals to the execution relay coil, the contact of carrying out relay is above-mentioned connection switch motion, and emergency battery is connected to and continues power supply on the main battery; When main battery charges, above-mentioned voltage sample part is to above-mentioned control unit input sample signal, above-mentioned control unit outputs a control signal to the execution relay coil, the contact of carrying out relay is above-mentioned connection switch motion, disconnect being connected between emergency battery and the main battery, above-mentioned charging control section is divided the charging valtage behind the output buck, and emergency battery is charged; When the voltage of emergency battery is lower than the setting operating voltage, above-mentioned voltage sample part is to above-mentioned control unit input sample signal, above-mentioned control unit outputs a control signal to the execution relay coil, the contact of carrying out relay is above-mentioned connection switch motion, disconnects being connected between emergency battery and the main battery.
Above-mentioned control unit is an integrated chip.
Above-mentioned control unit comprises that a voltage sample branch road, above-mentioned unidirectional step-down charging paths and trigger branch road, above-mentioned voltage sample branch road comprises stabilivolt and the control relay that is serially connected with the main battery positive and negative end, above-mentioned unidirectional step-down charging paths is connected between the positive terminal of the positive terminal of main battery and emergency battery, above-mentioned triggering branch road comprises that one triggers element, above-mentioned trigger switch is connected in this triggering loop of triggering element, and the contact of above-mentioned execution relay coil, above-mentioned control relay and above-mentioned triggering element are serially connected with the positive and negative end of above-mentioned emergency battery;
When the voltage of main battery charging or main battery is higher than normal working voltage, above-mentioned stabilivolt conducting, the conducting of above-mentioned control relay coil, the above-mentioned triggering branch road of the contact open of above-mentioned control relay is the state of cut-offfing between emergency battery and the main battery; When the voltage of main battery is lower than normal working voltage, above-mentioned stabilivolt ends, the contact adhesive of above-mentioned control relay, connect above-mentioned trigger switch, the above-mentioned triggering branch road of above-mentioned triggering element switches, the coil of above-mentioned execution relay gets electric, and connecting its contact is above-mentioned connection switch, thus emergency battery and main battery and connect power supply.
Above-mentioned triggering branch road also is serially connected with another stabilivolt, and when the voltage of emergency battery is lower than when setting operating voltage, this another stabilivolt ends, the break trigger branch road, thus disconnect being connected between main battery and the emergency battery.
Above-mentioned triggering element is an one-way SCR, and above-mentioned trigger switch is connected between this silicon controlled positive terminal and the trigger end.
Above-mentioned unidirectional step-down charging paths is the diode that positive and negative electrode is connected to main battery positive terminal and emergency battery positive terminal respectively.
The utility model elec. vehicle backup power, when the voltage of main battery was in the setting operating voltage range, emergency battery was in idle state.When main battery does not have electricity, connect and connect switch, emergency battery use in parallel with main battery, owing to the voltage ratio main battery height of emergency battery this moment, emergency battery produces and promptly main battery is carried out fast charge, make the terminal voltage of main battery and emergency battery progressively approaching, jointly to the battery-driven car power supply, because the employing parallel way is same under discharging near situation about stopping, total internal resistance after the parallel connection reduces greatly, thus the power-on time that has prolonged emergency battery.When the voltage of emergency battery is lower than the setting operating voltage; control unit automatic cutout emergency battery; carry out over; when main battery charged, emergency battery was accepted charging simultaneously, but its charging valtage is the voltage after step-down; like this; emergency battery is in the floating charge state all the time, to guarantee having prolonged the service life of emergency battery not by the dehydration of overcharging.
Description of drawings
Fig. 1 is the circuit diagram of the utility model embodiment one.
Fig. 2 is the circuit diagram of the utility model embodiment two.
Fig. 3 is the circuit diagram of the utility model embodiment three.
The specific embodiment
The battery voltage of battery-driven car is generally 12V, 24V, and 36V, 48V etc. are that example describes with the 48V battery pack below.
Embodiment one: as shown in Figure 1, the utility model elec. vehicle backup power, comprise emergency battery B2 and be connected K switch, connect between the positive terminal that K switch is connected in the positive terminal of main battery B1 and emergency battery B2, and also be connected with a step-down charging paths that is connected in series mutually by unilateral diode D1, D2, D3 between the positive terminal of the positive terminal of main battery B1 and emergency battery B2 in addition, and the positive terminal of diode D1, D2, D3 is connected in main battery B1 positive terminal, and the negative pole end of diode D1, D2, D3 is connected in the positive terminal of emergency battery B2.
Battery-driven car is by battery pack B1 power supply under the normal condition, and emergency battery B2 does not power under the isolation of D1, D2 and D3.When the main battery discharge off, the voltage of main battery is 42V, this moment battery-driven car controller circuitry in can't outgoing current, manually connect and connect K switch, the emergency battery B2 of 48V6Ah is connected in parallel on the main battery B1, this moment, the open circuit voltage of emergency battery B2 was 52V, because the high 10V of voltage ratio main battery B1 of emergency battery B2, emergency battery B2 carries out fast charge to main battery immediately, make the terminal voltage of main battery B1 and emergency battery B2 progressively approaching, reach jointly about 50V, power to battery-driven car together.Adopt this parallel way, equally under the situation of discharge near termination, the internal resistance of main battery B1 is 121 milliohms, the internal resistance of emergency battery B2 is 93 milliohms, and same under 18 amperes discharge current, the voltage that consumes on the internal resistance of cell is 1.67V, like this, when main battery B1 did not have electricity, the emergency battery B2 motor-car of also can powering continued about 13 kilometers of drivings in the parallel connection, had almost increased by one times than 7 kilometers of prior art.When main battery B1 charges, manually disconnect and connect K switch, charging current is given emergency battery B2 charging simultaneously after diode D1, D2, D3 step-down, because the pattern of using of main battery B1 is cycle charge-discharge, emergency battery B2 seldom uses, because the simple and easy reduction voltage circuit that diode D1, D2, D3 form makes emergency battery B2 be in the floating charge state, to guarantee emergency battery B2 not by the dehydration of overcharging, has prolonged the service life of emergency battery B2.
Embodiment two: the elec. vehicle backup power, comprise emergency battery B2, trigger switch K3, control unit IC and execution relay J 2, be provided with the unidirectional step-down charging paths that connects main battery B1 positive terminal and emergency battery B2 positive terminal in the control unit IC, trigger switch K3 cross-over connection is between the trigger end and main battery B1 negative pole end of control unit IC, the coil of carrying out relay J 2 is connected between the mouth and main battery negative pole end of control unit IC, carry out the connection K switch of the open contact of relay J 2 as break-make between the positive terminal of the positive terminal of controlling main battery B1 and emergency battery B2, control unit IC also is provided with the voltage sample end that is connected in main battery B1 positive terminal and is connected in the charging control end of emergency battery B2 positive terminal.
Battery-driven car is by main battery B1 power supply under the normal condition, and emergency battery B2 does not power.When main battery B1 does not have electric the time, battery-driven car can't be walked, manually connect trigger switch K3, the mouth output signal of control unit IC, the coil of carrying out relay J 2 gets electric adhesive, the open contact of carrying out relay J 2 promptly connects the K switch adhesive, emergency battery B2 and main battery B1 parallel operation, and battery-driven car works on.
When emergency battery B2 voltage is lower than 42V, expression emergency battery B2 discharge off, voltage signal is through voltage sample end control of access unit IC, after control unit IC judges, the mouth output signal of control unit IC, the coil blackout of carrying out relay J 2 discharges, and the open contact of carrying out relay J 2 promptly connects K switch and disconnects, and emergency battery B2 disconnection is connected with main battery B1's.When main battery B1 is recharged, voltage signal is through voltage sample end control of access unit IC, after control unit IC judges, the mouth output signal of control unit, the coil blackout of carrying out relay J 2 discharges, and the open contact of carrying out relay J 2 promptly connects K switch and disconnects, emergency battery B2 disconnects and being connected with main battery, at this moment, the charging signals behind the charging control end output buck of control IC, control emergency battery B2 enters the floating charge state.
Embodiment three: the utility model battery-driven car backup power comprises: by the coil tandem voltage sample branch road that form, that be connected to main battery B1 positive and negative end of stabilivolt D4, resistance R 1 and relay J 1; By the unidirectional step-down charging paths between the positive terminal of diode D1, D2 and D3 serial connection positive terminal that form, that be connected in main battery B1 and emergency battery B2; By the normally closed contact K1 and the stabilivolt D5 serial connection triggering branch road that form, that be connected to emergency battery B2 positive and negative end of the coil of carrying out relay J 2, resistance R 2, one-way SCR D6, relay J 1, trigger switch K3 is connected between the positive terminal and trigger end of one-way SCR D6; The open contact of carrying out relay J 2 is as connecting the K switch cross-over connection between the positive terminal of the positive terminal of main battery B1 and emergency battery B2.
Battery-driven car is by battery pack B1 power supply under the normal condition, and emergency battery B2 does not power under the isolation of D1, D2 and D3.When master battery pack B1 voltage dropped to 42V, battery-driven car can't be worked, at this moment, stabilivolt D4 outage, the coil blackout of relay J 1 discharges, the normally closed contact K1 outage adhesive of relay J 1.Manually connect trigger switch K3, the coil of carrying out relay J 2 gets electric adhesive, and the open contact of carrying out relay J 2 promptly connects the K switch conducting, emergency battery B2 and main battery B1 parallel operation, and battery-driven car works on.
When emergency battery B2 voltage drops to 42V when following, stabilivolt D5 outage, the coil blackout of carrying out relay J 2 discharges, and the open contact of carrying out relay J 2 promptly connects K switch and disconnects, and emergency battery B2 stops discharge.
If before emergency battery B2 discharge off, main battery B1 is charged, stabilivolt D4 receives the charging signals conducting, the coil of relay J 1 gets electric adhesive, the normally closed contact K1 of relay J 1 gets electric disconnection, the coil blackout of carrying out relay J 2 discharges, and the open contact of carrying out relay J 2 promptly connects K switch and disconnects, and emergency battery B2 disconnects with main battery B1 and being connected, at this moment, charge power supply is charged to emergency battery B2 by diode D2, D3 and D4.
The utility model elec. vehicle backup power, emergency battery electrically-charged the time and main battery use a same charger, but it passes through reduction voltage circuit along separate routes, make emergency battery always be in floating charge state, and main battery always is in the cycle charging state, emergency battery discharge time and the direct parallel operation of main battery reach optimal discharge time.Characteristics with long service life, power-on time length, the characteristics that embodiment two, three of the present utility model also has intelligent control, protects automatically.
Claims (7)
1, elec. vehicle backup power, comprise emergency battery and be connected switch, it is characterized in that: above-mentioned connection switch is connected between the positive terminal of the positive terminal of main battery and above-mentioned emergency battery, and also is connected with a unidirectional step-down charging paths between the positive terminal of the positive terminal of above-mentioned main battery and above-mentioned emergency battery in addition.
2, elec. vehicle backup power according to claim 1, it is characterized in that: above-mentioned emergency battery also comprises control unit, trigger switch and execution relay, above-mentioned unidirectional step-down charging paths is located in the above-mentioned control unit, above-mentioned trigger switch is connected in the triggering loop of above-mentioned control unit, the relay coil of above-mentioned execution relay is connected in the output loop of above-mentioned control unit, the contact of above-mentioned execution relay is as above-mentioned connection switch, be used to control the break-make between the positive terminal of the positive terminal of main battery and emergency battery, above-mentioned control unit also is provided with the charging control section branch that the voltage sample partial sum that is connected in the main battery positive terminal is connected in the emergency battery positive terminal;
When the voltage of main battery is lower than the setting operating voltage, connect trigger switch, trigger control unit, control unit outputs control signals to the execution relay coil, the contact of carrying out relay is above-mentioned connection switch motion, and emergency battery is connected to and continues power supply on the main battery; When main battery charges, above-mentioned voltage sample part is to above-mentioned control unit input sample signal, above-mentioned control unit outputs a control signal to the execution relay coil, the contact of carrying out relay is above-mentioned connection switch motion, disconnect being connected between emergency battery and the main battery, above-mentioned charging control section is divided the charging valtage behind the output buck, and emergency battery is charged; When the voltage of emergency battery is lower than the setting operating voltage, above-mentioned voltage sample part is to above-mentioned control unit input sample signal, above-mentioned control unit outputs a control signal to the execution relay coil, the contact of carrying out relay is above-mentioned connection switch motion, disconnects being connected between emergency battery and the main battery.
3, elec. vehicle backup power according to claim 2 is characterized in that: above-mentioned control unit is an integrated chip.
4, elec. vehicle backup power according to claim 2, it is characterized in that: above-mentioned control unit comprises a voltage sample branch road, above-mentioned unidirectional step-down charging paths and one triggers branch road, above-mentioned voltage sample branch road comprises stabilivolt and the control relay that is serially connected with the main battery positive and negative end, above-mentioned unidirectional step-down charging paths is connected between the positive terminal of the positive terminal of main battery and emergency battery, above-mentioned triggering branch road comprises that one triggers element, above-mentioned trigger switch is connected in this triggering loop of triggering element, above-mentioned execution relay coil, the contact of above-mentioned control relay and above-mentioned triggering element are serially connected with the positive and negative end of above-mentioned emergency battery;
When the voltage of main battery charging or main battery is higher than normal working voltage, above-mentioned stabilivolt conducting, the conducting of above-mentioned control relay coil, the above-mentioned triggering branch road of the contact open of above-mentioned control relay is the state of cut-offfing between emergency battery and the main battery; When the voltage of main battery is lower than normal working voltage, above-mentioned stabilivolt ends, the contact adhesive of above-mentioned control relay, connect above-mentioned trigger switch, the above-mentioned triggering branch road of above-mentioned triggering element switches, the coil of above-mentioned execution relay gets electric, and connecting its contact is above-mentioned connection switch, thus emergency battery and main battery and connect power supply.
5, elec. vehicle backup power according to claim 4, it is characterized in that: above-mentioned triggering branch road also is serially connected with another stabilivolt, when the voltage of emergency battery is lower than the setting operating voltage, this another stabilivolt ends, the break trigger branch road, thus being connected between main battery and the emergency battery disconnected.
6, elec. vehicle backup power according to claim 4 is characterized in that: above-mentioned triggering element is an one-way SCR, and above-mentioned trigger switch is connected between this silicon controlled positive terminal and the trigger end.
7, elec. vehicle backup power according to claim 1 and 2 is characterized in that: above-mentioned unidirectional step-down charging paths is the diode that positive and negative electrode is connected to main battery positive terminal and emergency battery positive terminal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110492 CN2663203Y (en) | 2003-10-26 | 2003-10-26 | Stand by power supply of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110492 CN2663203Y (en) | 2003-10-26 | 2003-10-26 | Stand by power supply of electric vehicle |
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| CN2663203Y true CN2663203Y (en) | 2004-12-15 |
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| CN 200320110492 Expired - Fee Related CN2663203Y (en) | 2003-10-26 | 2003-10-26 | Stand by power supply of electric vehicle |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867198A (en) * | 2009-04-20 | 2010-10-20 | 龙旗科技(上海)有限公司 | Realizing device and control method for standby battery of mobile phone |
| US7919885B2 (en) | 2007-08-24 | 2011-04-05 | Samsung Electronics Co., Ltd. | Method of controlling battery power, power control apparatus, and portable device using the same |
| US8254933B2 (en) | 2007-02-12 | 2012-08-28 | Samsung Electronics Co., Ltd. | Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system |
| CN103358929A (en) * | 2013-07-13 | 2013-10-23 | 潍坊瑞驰汽车系统有限公司 | Power distribution system for accumulator battery of electric vehicle |
| CN104890528A (en) * | 2015-05-26 | 2015-09-09 | 高正强 | Leisure electric vehicle with free-switching double batteries |
| CN106114257A (en) * | 2016-07-06 | 2016-11-16 | 北京新能源汽车股份有限公司 | Battery system and control method |
| CN106252758A (en) * | 2016-09-27 | 2016-12-21 | 彭旭华 | A kind of double source automobile starting battery |
| CN108808841A (en) * | 2018-06-29 | 2018-11-13 | 南方电网科学研究院有限责任公司 | Power supply switching system and intelligent electric energy meter |
| CN109606143A (en) * | 2018-11-23 | 2019-04-12 | 颍上北方动力新能源有限公司 | A kind of battery of electric vehicle |
| CN110228369A (en) * | 2019-06-24 | 2019-09-13 | 三一汽车制造有限公司 | Cell power systems, vehicle and control method |
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2003
- 2003-10-26 CN CN 200320110492 patent/CN2663203Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9204352B2 (en) | 2007-02-12 | 2015-12-01 | Samsung Electronics Co., Ltd. | Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system |
| US8254933B2 (en) | 2007-02-12 | 2012-08-28 | Samsung Electronics Co., Ltd. | Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system |
| US8805378B2 (en) | 2007-02-12 | 2014-08-12 | Samsung Electronics Co., Ltd. | Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system |
| US7919885B2 (en) | 2007-08-24 | 2011-04-05 | Samsung Electronics Co., Ltd. | Method of controlling battery power, power control apparatus, and portable device using the same |
| CN101373901B (en) * | 2007-08-24 | 2012-07-18 | 三星电子株式会社 | Method and apparatus of controlling battery power, and portable device using the same |
| CN101867198A (en) * | 2009-04-20 | 2010-10-20 | 龙旗科技(上海)有限公司 | Realizing device and control method for standby battery of mobile phone |
| CN103358929A (en) * | 2013-07-13 | 2013-10-23 | 潍坊瑞驰汽车系统有限公司 | Power distribution system for accumulator battery of electric vehicle |
| CN104890528A (en) * | 2015-05-26 | 2015-09-09 | 高正强 | Leisure electric vehicle with free-switching double batteries |
| CN106114257A (en) * | 2016-07-06 | 2016-11-16 | 北京新能源汽车股份有限公司 | Battery system and control method |
| CN106252758A (en) * | 2016-09-27 | 2016-12-21 | 彭旭华 | A kind of double source automobile starting battery |
| CN108808841A (en) * | 2018-06-29 | 2018-11-13 | 南方电网科学研究院有限责任公司 | Power supply switching system and intelligent electric energy meter |
| CN109606143A (en) * | 2018-11-23 | 2019-04-12 | 颍上北方动力新能源有限公司 | A kind of battery of electric vehicle |
| CN110228369A (en) * | 2019-06-24 | 2019-09-13 | 三一汽车制造有限公司 | Cell power systems, vehicle and control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041215 Termination date: 20091126 |