CN204886307U - But many strings of charging circuit of lithium cell group of quick charge - Google Patents
But many strings of charging circuit of lithium cell group of quick charge Download PDFInfo
- Publication number
- CN204886307U CN204886307U CN201520636666.6U CN201520636666U CN204886307U CN 204886307 U CN204886307 U CN 204886307U CN 201520636666 U CN201520636666 U CN 201520636666U CN 204886307 U CN204886307 U CN 204886307U
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Abstract
The utility model discloses a but many strings of charging circuit of lithium cell group of quick charge, which comprises a microprocessor. Two at least chargers, the current limiter, be used for stepping up or step down the DCDC that handles to the output voltage of charger and keep apart power supply circuit, is connected a DCDC isolation power supply circuit between each charger and the current limiter, be used for listening the output voltage's of charger voltage comparater, voltage comparater connects between charger and microprocessor, a BMS battery management circuit, BMS battery management circuit connect between many strings of lithium cell groups and microprocessor for real time monitoring lithium cell group. The utility model discloses voltage comparater can detect the output voltage of charger, and DCDC keeps apart power supply circuit and can adjust this output voltage to the voltage that is fit for going on charging for many strings of lithium cell groups, and the commonality is good, the charging current of many strings of lithium cell groups can be controlled to the current limiter, prevents that many strings of lithium cell groups from being burnt out because of overflowing, and the security is high.
Description
Technical field
The utility model relates to a kind of multi-series lithium battery group charging circuit of quickly-chargeable.
Background technology
Many string reason battery pack are applied in the multiple products such as electric automobile, electric bicycle, memory device, when the electricity of multi-series lithium battery group exhausts, general employing charger charges to it, the general charging current of lithium battery charger conventional is on the market less, be about 2 ~ 3A, the charging interval is longer, is about 8 ~ 12h, and high-power lithium battery charger is expensive, not Portable belt.In addition, same lithium battery charger charges to the lithium battery group of corresponding specification, and poor universality is very inconvenient.
Therefore, be necessary to provide a kind of new charging circuit to solve the problems referred to above.
Utility model content
The purpose of this utility model is to provide a kind of multi-series lithium battery group charging circuit that the charger of different size can be utilized multi-series lithium battery group to be carried out to the quickly-chargeable of big current quick charge.
To achieve these goals, the technical scheme that adopts of the utility model is as follows:
A multi-series lithium battery group charging circuit for quickly-chargeable, comprises the microprocessor for controlling whole circuit working, and described multi-series lithium battery group charging circuit also comprises:
At least two chargers;
For the flow restricter that Limited Current exports, described flow restricter is electrically connected with multi-series lithium battery group and described microprocessor respectively;
For boosting to the output voltage of described charger or the DC/DC insulating power supply circuit of step-down process, charger described in each is connected a described DC/DC insulating power supply circuit with between described flow restricter, described DC/DC insulating power supply circuit is electrically connected with described microprocessor further;
For detecting the voltage comparator of the output voltage of described charger, described voltage comparator is connected between described charger and described microprocessor;
For the BMS battery management circuit of the charging/discharging voltage of detecting real-time multi-series lithium battery group, electric current, temperature, capacity data, described BMS battery management circuit is connected between described multi-series lithium battery group and described microprocessor.
Preferably, described voltage comparator comprises built-in analog to digital conversion circuit and voltage swing comparison circuit.
Preferably, described charger is provided with four, and described charger is equal with the quantity of described DC/DC insulating power supply circuit.
Preferably, the voltage output end of all described DC/DC insulating power supply circuit is connected in parallel.
Preferably, the voltage output end of all described DC/DC insulating power supply circuit connects the input of same described flow restricter.
Compared with prior art, the beneficial effect of the multi-series lithium battery group charging circuit of the utility model quickly-chargeable is: described voltage comparator can detect the output voltage of charger, this output voltage can be adjusted to and be applicable to carrying out the voltage that charges to described multi-series lithium battery group by described DC/DC insulating power supply circuit, and versatility is good; Described flow restricter can control the charging current of multi-series lithium battery group, and prevent multi-series lithium battery group to be burned because of overcurrent, fail safe is high.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of the multi-series lithium battery group charging circuit of the utility model quickly-chargeable.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further.
Refer to shown in Fig. 1, the multi-series lithium battery group charging circuit of the utility model quickly-chargeable comprises:
For controlling the microprocessor of whole circuit working;
At least two chargers;
For the flow restricter that Limited Current exports, described flow restricter is electrically connected with multi-series lithium battery group and described microprocessor respectively;
For boosting to the output voltage of described charger or the DC/DC insulating power supply circuit of step-down process, charger described in each is connected a described DC/DC insulating power supply circuit with between described flow restricter, described DC/DC insulating power supply circuit is electrically connected with described microprocessor further;
For detecting the voltage comparator of the output voltage of described charger, described voltage comparator is connected between described charger and described microprocessor;
For the BMS battery management circuit of the charging/discharging voltage of detecting real-time multi-series lithium battery group, electric current, temperature, capacity data, described BMS battery management circuit is connected between described multi-series lithium battery group and described microprocessor.
In the present embodiment, described charger is provided with four, and the specification of all described chargers can be the same or different.When embody rule, described charger can adjust quantity as required.Described DC/DC insulating power supply circuit is equal with the quantity of described charger, the output voltage of the charger that DC/DC insulating power supply the regulation of electrical circuit one is corresponding.
Described voltage comparator comprises built-in analog to digital conversion circuit and voltage swing comparison circuit.Described built-in analog to digital conversion circuit detects the output voltage values of charger, be designated as the first voltage, the optimum charging voltage value of multi-series lithium battery group is designated as the second voltage, described voltage swing comparison circuit compares the size of the first voltage and the second voltage in real time, and comparative result is transferred to microprocessor, microprocessor controls corresponding DC/DC insulating power supply circuit working according to this comparative result, by the first Voltage Cortrol to the second voltage, namely when the first voltage is less than the second voltage, DC/DC insulating power supply control circui first voltage increases, when the first voltage is greater than the second voltage, DC/DC insulating power supply control circui first voltage reduces.
In the utility model, the magnitude of voltage that the voltage output end of all described DC/DC insulating power supply circuit exports is equal to the second voltage, charge to multi-series lithium battery group after the voltage output end of all described DC/DC insulating power supply circuit is connected in parallel, because charger quantity is many, charging current is larger, thus can realize big current quick charge, market application is very extensive.
Be burned because charging current is excessive to prevent multi-series lithium battery group; also flow restricter is connected with between the voltage output end of described DC/DC insulating power supply circuit and described multi-series lithium battery group; described flow restricter can limit the maximum charging current of described multi-series lithium battery group, thus protection multi-series lithium battery group.
Schematically above be described the utility model and execution mode thereof, this description does not have restricted, and also just one of the execution mode of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection range of the present utility model all should be belonged to.
Claims (5)
1. a multi-series lithium battery group charging circuit for quickly-chargeable, comprising the microprocessor for controlling whole circuit working, it is characterized in that, described multi-series lithium battery group charging circuit also comprises:
At least two chargers;
For the flow restricter that Limited Current exports, described flow restricter is electrically connected with multi-series lithium battery group and described microprocessor respectively;
For boosting to the output voltage of described charger or the DC/DC insulating power supply circuit of step-down process, charger described in each is connected a described DC/DC insulating power supply circuit with between described flow restricter, described DC/DC insulating power supply circuit is electrically connected with described microprocessor further;
For detecting the voltage comparator of the output voltage of described charger, described voltage comparator is connected between described charger and described microprocessor;
For the BMS battery management circuit of the charging/discharging voltage of detecting real-time multi-series lithium battery group, electric current, temperature, capacity data, described BMS battery management circuit is connected between described multi-series lithium battery group and described microprocessor.
2. the multi-series lithium battery group charging circuit of quickly-chargeable as claimed in claim 1, it is characterized in that, described voltage comparator comprises built-in analog to digital conversion circuit and voltage swing comparison circuit.
3. the multi-series lithium battery group charging circuit of quickly-chargeable as claimed in claim 1, it is characterized in that, described charger is provided with four, and described charger is equal with the quantity of described DC/DC insulating power supply circuit.
4. the multi-series lithium battery group charging circuit of quickly-chargeable as claimed in claim 3, it is characterized in that, the voltage output end of all described DC/DC insulating power supply circuit is connected in parallel.
5. the multi-series lithium battery group charging circuit of quickly-chargeable as claimed in claim 4, is characterized in that, the voltage output end of all described DC/DC insulating power supply circuit connects the input of same described flow restricter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636666.6U CN204886307U (en) | 2015-08-21 | 2015-08-21 | But many strings of charging circuit of lithium cell group of quick charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636666.6U CN204886307U (en) | 2015-08-21 | 2015-08-21 | But many strings of charging circuit of lithium cell group of quick charge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886307U true CN204886307U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520636666.6U Active CN204886307U (en) | 2015-08-21 | 2015-08-21 | But many strings of charging circuit of lithium cell group of quick charge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100084A (en) * | 2016-07-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | Charging system, terminal, power supply adaptor and charging wire |
| CN107830835A (en) * | 2017-12-07 | 2018-03-23 | 云南航天工程物探检测股份有限公司 | Bridge effective prestress detector and bridge effective prestress detection method |
-
2015
- 2015-08-21 CN CN201520636666.6U patent/CN204886307U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100084A (en) * | 2016-07-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | Charging system, terminal, power supply adaptor and charging wire |
| CN106100084B (en) * | 2016-07-28 | 2018-05-29 | 广东欧珀移动通信有限公司 | Charging system, terminal, power supply adaptor and charging wire |
| US10720779B2 (en) | 2016-07-28 | 2020-07-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick charging system, terminal, power adapter and charging line |
| US10910845B2 (en) | 2016-07-28 | 2021-02-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Terminal, power adapter for charging terminal, and charging line for coupling terminal and power adapter |
| CN107830835A (en) * | 2017-12-07 | 2018-03-23 | 云南航天工程物探检测股份有限公司 | Bridge effective prestress detector and bridge effective prestress detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xiaohong Inventor after: Fan Yeping Inventor before: Xie Yong Inventor before: Zhang Xiaohong Inventor before: Fan Yeping |
|
| CB03 | Change of inventor or designer information | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000, 2 building, No. 2, building 398, Yi Sheng Road, Kunshan, Suzhou, Jiangsu Patentee after: Kunshan Jin Xin new energy Limited by Share Ltd Address before: 215000, 2 building, No. 2, building 398, Yi Sheng Road, Kunshan, Suzhou, Jiangsu Patentee before: Kunshan Jinxin New Energy Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 2/F, Building 398 Yisheng Road, Kunshan High-tech Zone, Suzhou City, Jiangsu Province Patentee after: Kunshan Jinxin New Energy Technology Co., Ltd. Address before: 2/F, Building 398 Yisheng Road, Kunshan High-tech Zone, Suzhou City, Jiangsu Province Patentee before: Kunshan Jin Xin new energy Limited by Share Ltd |
|
| CP01 | Change in the name or title of a patent holder |