CN102655344A - Power source and method for regulating charging voltage of battery - Google Patents
Power source and method for regulating charging voltage of battery Download PDFInfo
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- CN102655344A CN102655344A CN2011100497415A CN201110049741A CN102655344A CN 102655344 A CN102655344 A CN 102655344A CN 2011100497415 A CN2011100497415 A CN 2011100497415A CN 201110049741 A CN201110049741 A CN 201110049741A CN 102655344 A CN102655344 A CN 102655344A
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Abstract
The invention provides a power source for regulating the charging voltage of a battery, comprising a storage battery, a voltage regulating unit and a control unit, wherein one end of the storage battery is connected with the voltage regulating unit, and the other end of the storage battery is earthed; the control unit is connected with the voltage regulating unit and connected with the storage battery through the voltage regulating unit; the control unit is used for calling a lookup table built in the control unit according to the charging state of the storage battery, finding control information corresponding to the charging state of the storage battery, generating a corresponding control signal and transmitting the control signal to the voltage regulating unit; and the voltage regulating unit is used for generating a corresponding voltage according to the control signal. The invention also provides a method for regulating the charging voltage of a battery. By using the power source and the method for regulating the charging voltage of the battery, the service life of the storage battery is greatly prolonged, and the storage battery can be charged sufficiently.
Description
[technical field]
The present invention relates to a kind of electric motor car charging technique, be specifically related to a kind of power supply and method of adjusting battery charging voltage.
[background technology]
The electric automobile cause has obtained significant progress, but the fragility relatively of battery system is the bottleneck of electric motor car development.Lithium battery has that energy density and bulk density are high, operating voltage is high, memory-less effect, the low advantage of non-environmental-pollution problem again of self discharge, be the ideal power source of electric automobile, but the anti-over-charging electric energy power of lithium battery is poor than lead-acid battery.Tradition makes that based on the charging method of battery pack terminal voltage there is the serious phenomenon of overcharging in the part battery in charging process in the battery pack; Make the capacity of battery descend rapidly; The life-span of battery seriously shortens, and the operating cost of vehicle increases, and has hindered the development of electric automobile.
For a long time, lead acid accumulator has obtained using widely as main power source or back-up source.The anti-over-charging ability of lead-acid battery is stronger, can carry out equilibrium to battery through the trickle charge in charging later stage.The nineties in 20th century, Ni-MH battery and lithium battery are used for small-power occasions such as mobile phone, notebook computer and digital camera after occurring more.Electric automobile is higher to the requirement of battery, and reason is: (1) needs capacity big; (2) a large amount of connection in series-parallel are used; (3) operating current of battery is big and change rapidly; (4) work under bad environment; Comprise that road jolts and cell between can cause the difference of actual capacity because initial capacity, heating and self discharge etc. are incomplete same; And overcharging and overdischarge in use appears in battery that capacity is low more more easily; Capacity attenuation is serious more, shows positive feedback, make battery consistency worse and worse; In order to reach balanced effect, the capacity of equalizer, volume and quality are all big, form contradiction between this and vehicle space and the high operational efficiency.
Since the ability of overcharging of lithium battery a little less than; Can not be balanced through the trickle charge realization in charging later stage as lead-acid battery; Even if so when battery dispatches from the factory, carried out strict screening, after use a period of time, the capacity between the cell still difference can occur; In charging process, the phenomenon generation that the part battery is full of electricity earlier certainly will appear like this.Owing to can not learn whether have individual cell to be full of electricity in the battery pack timely and effectively, make the battery that is full of electricity earlier occur overcharging based on the charging method of battery pack terminal voltage.Even if lead-acid battery adopts based on the charge mode of terminal voltage also can cause the capacity attenuation of a large amount of heatings of battery and battery rapid because serious overcharging taken place, the life-span seriously shortens.
[summary of the invention]
The purpose of this invention is to provide a kind of power supply and method of adjusting battery charging voltage, it has the greenization notion, does not have the bottleneck restriction of capacity, needing to be particularly suitable for the occasion of big capacity charger, has very strong practicality.
In order to solve the existing problem of background technology, the present invention adopts following technical scheme:
A kind of power supply of adjusting battery charging voltage, it comprises storage battery, voltage-adjusting unit and control unit, said storage battery one end connects voltage-adjusting unit; Other end ground connection, said control unit connects voltage-adjusting unit, and is connected with storage battery through voltage-adjusting unit; Said control unit is used for the charged state according to storage battery, calls the look-up table that is built in the control unit, finds the charged state control information corresponding of storage battery; Produce control signal corresponding; Be transferred to voltage-adjusting unit, said voltage-adjusting unit produces corresponding voltage according to said control signal.
Further, said voltage-adjusting unit is receiving the voltage adjustment signal of control unit transmission successively, institute successively the voltage of the correspondence of generation for increasing progressively successively.
Further, said voltage-adjusting unit is receiving the voltage adjustment signal of control unit transmission successively, and institute's voltage of the correspondence of generation successively increases progressively for single-candidate successively.
Further, said control unit be central processing unit, microprocessor or single-chip microcomputer one of them.
A kind of method of adjusting battery charging voltage, it comprises:
Storage battery two ends to be charged apply the voltage that increases progressively successively, reach the charging termination value up to the storage battery voltage.
Further, the mode that applies the voltage that increases progressively successively to storage battery two ends to be charged increases progressively for single-candidate successively.
The present invention provides a kind of power supply and method of adjusting battery charging voltage, the life of storage battery is prolonged greatly, and can make the storage battery sufficient electrical energy.
[description of drawings]
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is a kind of module diagram of adjusting the power supply of battery charging voltage of the embodiment of the invention
[embodiment]
See also Fig. 1, it is a kind of module diagram of adjusting the power supply of battery charging voltage of the embodiment of the invention.
A kind of power supply of adjusting battery charging voltage, it comprises storage battery 11, voltage-adjusting unit 12 and control unit 13.Wherein, said control unit be central processing unit, microprocessor or single-chip microcomputer one of them.Said storage battery 11 1 ends connect voltage-adjusting unit 12, other end ground connection, and said control unit 13 connects voltage-adjusting unit 12, and is connected with storage battery 11 through voltage-adjusting unit 12.
Said control unit 13 is used for the charged state according to storage battery 11; Call the look-up table that is built in the control unit 13; Find the charged state control information corresponding of storage battery 11, produce control signal corresponding, be transferred to voltage-adjusting unit 12; Said voltage-adjusting unit 12 produces corresponding voltage according to said control signal.
Said voltage-adjusting unit 12 is at the voltage adjustment signal that is receiving control unit 13 transmission successively, institute successively the voltage of the correspondence of generation for increasing progressively successively.Certainly, more excellent ground, the voltage of the correspondence that said voltage-adjusting unit 12 produces successively increases progressively for single-candidate successively.
The present invention also provides a kind of method of adjusting battery charging voltage, and it comprises: the storage battery two ends to be charged apply the voltage that increases progressively successively, reach the charging termination value up to the storage battery voltage.
More excellent ground, the mode that applies the voltage that increases progressively to storage battery two ends to be charged successively increases progressively for single-candidate successively.
A kind of method of adjusting battery charging voltage; Its concrete operations step is: 1, at first charging device does not have impact type increase charging current to storage battery; Reach the charging current higher limit up to charging current, the maximum that this upper current limit value is not more than storage battery allows charging current value; 2, be the constant voltage value of first ladder with accumulator voltage at this moment then, next charging device gets into the constant voltage control stage; 3, along with the carrying out of charging process, the charging current on storage battery can progressively reduce, in case charging current less than the charging current lower limit after, charging device just improves charging voltage, thereby causes the increase of charging current; In case when the charging current on 4 storage batterys reaches the charging current higher limit, be the constant voltage value of next ladder with the terminal voltage on the storage battery of this moment again, charging device gets into next constant voltage control stage; 5, the constant voltage that so periodically rises with staged storage battery voltage is controlled and is charged a battery, and reaches the charging termination value up to accumulator voltage; 6, keep the charging termination value then and carry out the constant voltage control stage, the charging that is reduced to setting until charging current finishes current value; 7, charging device changes the floating charge operating state automatically over to, and whole charging process finishes.
The principle of this embodiment is: in whole charging process; Charging device mainly is to accomplish charging process through the constant voltage value that improves constantly constant voltage control; From belonging to the constant voltage control method in essence; Just the charging current of its constant voltage value generation is to adjust in the storage battery allowed band; This charging method has been avoided the current fluctuation in a big way that storage battery causes owing to the AC characteristic of its internal resistance of cell, and storage battery itself resembles voltage-controlled effect has increased a jumbo capacitor, quite favourable to improving voltage control precision and stability.Add that the charger DC loop does not contain the high-frequency harmonic component and can not produce the burr spike; Between charge period, storage battery is difficult for decomposition water and consumed power like this, and is difficult for making the active material on the pole plate to come off in a large number; Thereby the life of storage battery is prolonged greatly, and can make the storage battery sufficient electrical energy.
To be storage battery be lower than the sensitivity to electric current to the sensitivity of voltage to the theoretical foundation of this embodiment, and the stable of charge in batteries voltage is vital to the storage battery life-saving.On the basis that keeps constant voltage control, do not allow charging current to allow charging current greater than the maximum of storage battery in the use, the stepped increase of charging voltage is the actual conditions according to charging current, is provided with automatically by charger.Seeing that from the chemical characteristic of storage battery its charging interval is not the shortest, but be best to the overall target of battery charge, also is very effective to the life-span that prolongs storage battery simultaneously.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (6)
1. a power supply of adjusting battery charging voltage is characterized in that, comprises storage battery, voltage-adjusting unit and control unit; Said storage battery one end connects voltage-adjusting unit, other end ground connection, and said control unit connects voltage-adjusting unit; And be connected with storage battery through voltage-adjusting unit, said control unit is used for the charged state according to storage battery, calls the look-up table that is built in the control unit; Find the charged state control information corresponding of storage battery, produce control signal corresponding, be transferred to voltage-adjusting unit; Said voltage-adjusting unit produces corresponding voltage according to said control signal.
2. a kind of power supply of adjusting battery charging voltage according to claim 1 is characterized in that, said voltage-adjusting unit is receiving the voltage adjustment signal of control unit transmission successively, institute successively the voltage of the correspondence of generation for increasing progressively successively.
3. a kind of power supply of adjusting battery charging voltage according to claim 2 is characterized in that, said voltage-adjusting unit is receiving the voltage adjustment signal of control unit transmission successively, and institute's voltage of the correspondence of generation successively increases progressively for single-candidate successively.
4. a kind of power supply of adjusting battery charging voltage according to claim 1 is characterized in that, said control unit be central processing unit, microprocessor or single-chip microcomputer one of them.
5. a method of adjusting battery charging voltage is characterized in that, comprising:
Storage battery two ends to be charged apply the voltage that increases progressively successively, reach the charging termination value up to the storage battery voltage.
6. a kind of method of adjusting battery charging voltage according to claim 5 is characterized in that, the mode that applies the voltage that increases progressively to storage battery two ends to be charged successively increases progressively for single-candidate successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100497415A CN102655344A (en) | 2011-03-02 | 2011-03-02 | Power source and method for regulating charging voltage of battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100497415A CN102655344A (en) | 2011-03-02 | 2011-03-02 | Power source and method for regulating charging voltage of battery |
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| CN102655344A true CN102655344A (en) | 2012-09-05 |
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| CN2011100497415A Pending CN102655344A (en) | 2011-03-02 | 2011-03-02 | Power source and method for regulating charging voltage of battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114386A (en) * | 2019-09-29 | 2020-05-08 | 北京嘀嘀无限科技发展有限公司 | Safe charging method for electric automobile, electronic equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327287A (en) * | 2000-06-06 | 2001-12-19 | 深圳市安圣电气有限公司 | Rectified power source having step regulated cell charging voltage |
| CN1813386A (en) * | 2004-02-25 | 2006-08-02 | 核心技术国际有限公司 | Charger for secondary battery |
-
2011
- 2011-03-02 CN CN2011100497415A patent/CN102655344A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327287A (en) * | 2000-06-06 | 2001-12-19 | 深圳市安圣电气有限公司 | Rectified power source having step regulated cell charging voltage |
| CN1813386A (en) * | 2004-02-25 | 2006-08-02 | 核心技术国际有限公司 | Charger for secondary battery |
Non-Patent Citations (1)
| Title |
|---|
| 章玉燕 吕光: "《日本电子电路精选》", 31 December 1989 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114386A (en) * | 2019-09-29 | 2020-05-08 | 北京嘀嘀无限科技发展有限公司 | Safe charging method for electric automobile, electronic equipment and storage medium |
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| DD01 | Delivery of document by public notice |
Addressee: Jiangsu Jiayu New Power Technology Co., Ltd. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
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Addressee: Gao Song Document name: the First Notification of an Office Action |
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Addressee: Jiangsu Jiayu New Power Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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Application publication date: 20120905 |