CN103515994A - A power battery set equalizing charging and a device - Google Patents
A power battery set equalizing charging and a device Download PDFInfo
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- CN103515994A CN103515994A CN201210202051.3A CN201210202051A CN103515994A CN 103515994 A CN103515994 A CN 103515994A CN 201210202051 A CN201210202051 A CN 201210202051A CN 103515994 A CN103515994 A CN 103515994A
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- charging
- battery
- battery pack
- batteries
- equalizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power battery set equalizing charging and a device. The power battery set equalizing charging and the device adopt a charging means in working to make the charging of a battery set be carried out on a half of a total number of batteries. The method can ensure that influences of a circuit impedance on battery voltage sampling are eliminated when a charging current exists in equalizing charging circuit, ensure that the equalizing charging circuit does not carry out charging on the batteries wrongly, and prevent the occurring of overvoltage and over-current phenomena in a charging process of the battery set. When the charging process carried out on the half of the total number of batteries is completed, equalizing charging will be carried out on the other half of the total number of batteries. After the charging is completed, a controller will obtain working state indication signals of the equalizing charging circuit. After the equalizing charging carried out on the whole battery set is completed, the controller will control an acousto-optic alarming unit to carry out alarming to warn an operator that the equalizing charging carried out on the whole battery set is completed. The above charging on the other half of the total number of batteries means that in the battery set composed of batteries which are in series connection, as for any one battery, the charging is not carried out on two batteries adjacent to the one battery.
Description
Technical field
The present invention relates to a kind of power battery pack balanced charging method and equipment, belong to battery detecting field.
Background technology
Due to lithium ion battery, to have energy density large, working temperature is high, the advantages such as work under bad environment, add the security concepts that people-oriented, so user has proposed very high requirement to the fail safe of battery, aspect the management system of power battery of electric vehicle, because the operating voltage of power battery of electric vehicle is 12V or 24V, and the operating voltage of monomer power lithium-ion battery is between 3.6V-4.2V, therefore must connect and improve voltage by a plurality of batteries, but the consistency difference due to battery, in use procedure, be difficult to discharging and recharging of complete and homogeneous, therefore the cell in the battery pack that causes connecting there will be the unbalanced situation that discharges and recharges, battery there will be undercharge and overdischarge phenomenon, and this situation can cause the sharply deterioration of battery performance, finally cause whole Battery pack to work, even scrap, thereby greatly affect useful life and the reliability of battery pack, and balanced charging method is before very not obvious to the proportionality action of battery pack, also there is serious overcharging and charge less problem, the existence of this problem makes lithium ion battery no longer safe.
Summary of the invention
In order to overcome the deficiency of power battery pack equalizing charge, the invention provides power battery pack balanced charging method and equipment.
The technical solution adopted for the present invention to solve the technical problems:
The present invention proposes a kind of power battery pack balanced charging method and equipment, comprises: controller, AC-DC power supply, equalization charging circuit, relay (JQ1), relay (JQ2), acousto-optic warning unit, see accompanying drawing 1.
With reference to the accompanying drawings 1, the course of work of the present invention is described:
First determine the inner connecting way of wanting rechargeable battery set, the mode and the present device that according to inside, connect connect, during charging, after starting device, controller can be switched to the charging of half battery by automatic control relay switch unit, when being full of post-equalization charging circuit, certain batteries can be full of electric signal to one of controller, after the charging of this half battery all equilibrium finishes, controller will control relay (JQ1) and (JQ2) is switched to remaining half battery and charges, charging finish rear controller can control relay (JQ1) and (JQ2) switch to all battery chargings like this when all equalizing charge of battery finish after controller will control acousto-optic warning unit carry out sound and light alarm notify operator this to the battery pack balancing end of charging.
According to the above course of work, the basic principle of following devices illustrated work:
Power battery pack balanced charging method and equipment are taked a kind of charging facility when work, whole battery pack is only given the charging of half battery when charging, this method can guarantee that equalization charging circuit eliminates the impact of circuit impedance on battery voltage sampling when having charging current, raising is to battery voltage sampling precision, guarantee that equalization charging circuit can wrong not charging to battery, prevent that overvoltage and over-current phenomenon avoidance from appearring in battery pack in charging process, after finishing, this half equalizing charge of battery turn to again another half battery to carry out equalizing charge, charging finishes the operating state index signal that rear controller can obtain equalization charging circuit, the charging of whole battery pack balancing finishes rear controller and will control acousto-optic warning unit and report to the police, remind the charging of operator's battery pack balancing complete.
Above-mentioned refer at battery only to the charging of half battery to adopt two adjacent batteries of any one battery in the battery pack that the mode of series connection forms not charge.
Beneficial effect of the present invention:
Can be from the overcharging of basic elimination battery pack, charge less phenomenon.
accompanying drawing explanation:
Accompanying drawing 1 is the part schematic diagram of power battery pack balanced charging method and equipment.
embodiment:
In order to make technical scheme of the present invention clearer, below in conjunction with drawings and Examples, the present invention is described in more detail, and instantiation described herein only, in order to explain the present invention, is not limited to the present invention.
embodiment:
First determine the inner connecting way of wanting rechargeable battery set, the mode and the present device that according to inside, connect connect, during charging, after starting device, controller can the switching of automatic control relay switch unit make battery 0, battery 2, the AC-DC power work of battery 4 correspondences is battery 0, battery 2, battery 4 chargings provide energy, when being full of post-equalization charging circuit, battery 2 can be full of electric signal to one of controller, when battery 0, battery 2, after battery 4 all equilibrium chargings, controller control relay switch unit makes battery 1, battery 3, the AC-DC power work of battery 5 correspondences is battery 1, battery 3, battery 5 chargings provide energy until battery 1, battery 3, battery 5 equalizing charges finish rear controller can all carry out equalizing charge by all batteries of control relay switch unit, after all equalizing charge of battery finish, controller will be controlled acousto-optic warning unit and carries out sound and light alarm and notify the charging of this battery pack balancing of operator to finish like this.
Balanced charging method is before to charge to all batteries simultaneously, at this moment 1 virtual voltage that can calculate every batteries with reference to the accompanying drawings, the sampled voltage of equalization charging circuit is at this moment that at this moment 3.65V will go wrong, voltage V0=3.65V+I0*R00+ (I0-I1) the * R01 of battery 0, voltage V1=3.65V+ (I2-I3) * R02+ (I2-I1) * R01 of battery 1, the voltage of battery 2 is V2=3.65V+ (I2-I3) * R03+ (I2-I1) * R02, by analysis, find, in charging process, as this serial connection charge, add balanced mode, final result can cause the battery at all cannot be balanced, because current-sharing electric current is in continuous increase, missionary society between battery virtual voltage and detected value is increasing, so not only do not reach the effect of balancing battery to such charging modes, once and equalizing circuit works, battery is increasing by deviation.
Claims (2)
1. power battery pack balanced charging method and equipment, its composition comprises: controller, AC-DC power supply, equalization charging circuit, relay (JQ1), relay (JQ2), acousto-optic warning unit, it is characterized in that: power battery of electric vehicle group balanced charging method and equipment are taked a kind of charging facility when work, whole battery pack is only given the charging of half battery when charging, this method can guarantee that equalization charging circuit eliminates the impact of circuit impedance on battery voltage sampling when having charging current, guarantee that equalization charging circuit can wrong not charging to battery, prevent that overvoltage and over-current phenomenon avoidance from appearring in battery pack in charging process, after finishing, this half equalizing charge of battery turn to again another half battery to carry out equalizing charge, charging finishes the operating state index signal that rear controller can obtain equalization charging circuit, the charging of whole battery pack balancing finishes rear controller and will control acousto-optic warning unit and report to the police, remind the charging of operator's battery pack balancing complete.
2. power battery pack balanced charging method according to claim 1 and equipment, is characterized in that: refer at battery only to the charging of half battery and adopt two adjacent batteries of any one battery in the battery pack that the mode of series connection forms not charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202051.3A CN103515994A (en) | 2012-06-19 | 2012-06-19 | A power battery set equalizing charging and a device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202051.3A CN103515994A (en) | 2012-06-19 | 2012-06-19 | A power battery set equalizing charging and a device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103515994A true CN103515994A (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210202051.3A Pending CN103515994A (en) | 2012-06-19 | 2012-06-19 | A power battery set equalizing charging and a device |
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| Country | Link |
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| CN (1) | CN103515994A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953684A (en) * | 2015-06-23 | 2015-09-30 | 深圳市科列技术股份有限公司 | Dynamic equalization circuit of battery management system and dynamic equalization method of dynamic equalization circuit |
| CN104953659A (en) * | 2015-06-24 | 2015-09-30 | 国家电网公司 | Charge-discharge equalization circuit for battery pack and charge-discharge method |
| CN105762846A (en) * | 2014-12-15 | 2016-07-13 | 哈尔滨市三和佳美科技发展有限公司 | Series-connected farad capacitor safety charger |
-
2012
- 2012-06-19 CN CN201210202051.3A patent/CN103515994A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762846A (en) * | 2014-12-15 | 2016-07-13 | 哈尔滨市三和佳美科技发展有限公司 | Series-connected farad capacitor safety charger |
| CN104953684A (en) * | 2015-06-23 | 2015-09-30 | 深圳市科列技术股份有限公司 | Dynamic equalization circuit of battery management system and dynamic equalization method of dynamic equalization circuit |
| CN104953659A (en) * | 2015-06-24 | 2015-09-30 | 国家电网公司 | Charge-discharge equalization circuit for battery pack and charge-discharge method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |