CN204905945U - Many strings of heavy current equalizer circuit of lithium cell group - Google Patents
Many strings of heavy current equalizer circuit of lithium cell group Download PDFInfo
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- CN204905945U CN204905945U CN201520656269.5U CN201520656269U CN204905945U CN 204905945 U CN204905945 U CN 204905945U CN 201520656269 U CN201520656269 U CN 201520656269U CN 204905945 U CN204905945 U CN 204905945U
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Abstract
The utility model discloses a many strings of heavy current equalizer circuit of lithium cell group, include: a plurality of lithium cells that connect gradually, wherein, the negative pole of the first lithium cell and time anodal electric connection of position lithium cell, and the anodal electric connection of the negative pole of a last lithium cell and next lithium cell, the microprocessor control ware, an energy storage inductance for storing and balanced electric energy, DCDC boost circuit, DCDC boost circuit and energy storage inductance electric connection, a plurality of voltage comparater, a voltage comparater connects between the anodal of a lithium cell and microprocessor control ware, a plurality of permanent magnetism relay. The utility model discloses on can transferring to the low list lithium cell of electric quantity through the energy storage inductance with the electric quantity of the list lithium cell that the electric quantity is high, it is unanimous up to all single lithium battery power, finally realize the portfolio effect of many strings of lithium cell inter block portions, the equalizing current is big, and the balanced time is short, no energy losses, dynamic equalization accuracy height.
Description
Technical field
The utility model relates to a kind of multi-series lithium battery group big current equalizing circuit.
Background technology
Multi-series lithium battery group is applied in the multiple products such as electric automobile, electric bicycle, memory device, multi-series lithium battery group is in charge and discharge cycles process, due to series connection single lithium battery between property difference, use a period of time can cause unbalanced phenomena between lithium battery.Long-Time Service can cause the reduction in going down of multi-series lithium battery group overall performance and useful life.Therefore, need to carry out equalizing voltage to multi-series lithium battery group.
At present, the mode of equalizing voltage is when multi-series lithium battery group is in charging on the market, realizes balanced by carrying out electric discharge to single lithium battery.The shortcoming of this kind of mode is that euqalizing current is little, and caloric value is large, and the balanced cycle is long, affects battery.Therefore, be necessary to provide a kind of new equalizing circuit to solve the problems referred to above.
Utility model content
The purpose of this utility model is to provide that a kind of euqalizing current is large, time for balance is short, without electric energy loss, dynamic equalization accuracy much higher series lithium battery group big current equalizing circuit.
To achieve these goals, the technical scheme that adopts of the utility model is as follows:
A kind of multi-series lithium battery group big current equalizing circuit, comprise some lithium batteries connected successively, wherein, the negative pole of the first lithium battery is electrically connected with time positive pole of position lithium battery, and the negative pole of a upper lithium battery and the positive pole of next bit lithium battery are electrically connected, described multi-series lithium battery group big current equalizing circuit also comprises:
For controlling the microprocessor controller of whole circuit working;
For storing and the energy storage inductor of balanced electric energy;
For described lithium battery voltage being risen to the DC/DC booster circuit of described energy storage inductor supply power voltage, described DC/DC booster circuit and described energy storage inductor are electrically connected;
Several are for detecting the voltage comparator of lithium battery output voltage, and a described voltage comparator is connected between the positive pole of a described lithium battery and described microprocessor controller;
Several connect the permanent-magnet relay of described DC/DC booster circuit for controlling described lithium battery, described permanent-magnet relay and described microprocessor controller are electrically connected, described permanent-magnet relay comprises coil and dynamic circuit connector switch, one end of described coil and the output of described microprocessor controller are electrically connected, second end ground connection of described coil, the negative pole of lithium battery described in each be connected a described dynamic circuit connector switch between described DC/DC booster circuit, the positive pole of described the first lithium battery be connected a described dynamic circuit connector switch between described DC/DC booster circuit.
Preferably, the quantity of described voltage comparator equals the quantity of described lithium battery, and the quantity of described permanent-magnet relay is greater than the quantity of described lithium battery.
Preferably, be also connected with load major loop between the positive pole of described the first lithium battery and the negative pole of last position lithium battery, described load major loop is connected in series with load and control switch, described control switch and described microprocessor controller are electrically connected.
Preferably, described voltage comparator comprises A/D convertor circuit and voltage swing comparison circuit.
Compared with prior art, the beneficial effect of the utility model multi-series lithium battery group big current equalizing circuit is: the electricity of single lithium battery high for electricity can be transferred on the low single lithium battery of electricity by energy storage inductor by the utility model, until all single electric quantity of lithium batteries are consistent, finally realize the portfolio effect of multi-series lithium battery group inside, euqalizing current is large, time for balance is short, and without electric energy loss, dynamic equalization accuracy is high.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model multi-series lithium battery group big current equalizing circuit;
Fig. 2 is the electrical block diagram of the load major loop of multi-series lithium battery group described in the utility model.
In figure, each mark is as follows: J1A, the first coil; J2A, the second coil; J3A, tertiary coil; J4A, the 4th coil; J5A, the 5th coil; J1B, the first dynamic circuit connector switch; J2B, the second dynamic circuit connector switch; J3B, the 3rd dynamic circuit connector switch; J4B, the 4th dynamic circuit connector switch; J5B, the 5th dynamic circuit connector switch; B1, the first lithium battery; B2, the second lithium battery; B3, the 3rd lithium battery; B4, the 4th lithium battery; R, load; K, control switch.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further.
Refer to shown in Fig. 1 to Fig. 2, the utility model multi-series lithium battery group big current equalizing circuit comprises:
Some lithium batteries connected successively, wherein, the negative pole of the first lithium battery is electrically connected with time positive pole of position lithium battery, and the negative pole of a upper lithium battery and the positive pole of next bit lithium battery are electrically connected;
For controlling the microprocessor controller of whole circuit working;
For storing and the energy storage inductor of balanced electric energy;
For described lithium battery voltage being risen to the DC/DC booster circuit of described energy storage inductor supply power voltage, described DC/DC booster circuit and described energy storage inductor are electrically connected;
Several are for detecting the voltage comparator of lithium battery output voltage, and a described voltage comparator is connected between the positive pole of a described lithium battery and described microprocessor controller;
Several connect the permanent-magnet relay of described DC/DC booster circuit for controlling described lithium battery, described permanent-magnet relay and described microprocessor controller are electrically connected, described permanent-magnet relay comprises coil and dynamic circuit connector switch, one end of described coil and the output of described microprocessor controller are electrically connected, second end ground connection of described coil, the negative pole of lithium battery described in each be connected a described dynamic circuit connector switch between described DC/DC booster circuit, the positive pole of described the first lithium battery be connected a described dynamic circuit connector switch between described DC/DC booster circuit.
In the utility model, the quantity of described voltage comparator equals the quantity of described lithium battery, and the quantity of described permanent-magnet relay is greater than the quantity of described lithium battery.Also be connected with load major loop between the positive pole of described the first lithium battery and the negative pole of last position lithium battery, described load major loop be connected in series with load R and control switch K, described control switch K and described microprocessor controller are electrically connected.Described voltage comparator comprises A/D convertor circuit and voltage swing comparison circuit.
When embody rule, described control switch K can adopt metal-oxide-semiconductor, and controls its work by described microprocessor controller.Wherein, the source electrode of described metal-oxide-semiconductor and drain series are connected in described load major loop, and grid and the described microprocessor controller of described metal-oxide-semiconductor are electrically connected.Described control switch K also can adopt the switch of relay, and the coil of relay controls energising and power-off by microprocessor controller.
During use, described voltage comparator detects the voltage of each lithium battery in real time, and convert analog voltage to digital voltage by A/D convertor circuit, the lithium battery that voltage is the highest and the minimum lithium battery of voltage is detected again through voltage swing comparison circuit, namely the lithium battery that electricity is the highest and the minimum lithium battery of electricity is drawn, the highest with the electricity of the first lithium battery B1, the electricity of the 3rd lithium battery B3 is minimum is example, described microprocessor controller first controls described first coil J1A and the second coil J2A and is energized, first dynamic circuit connector switch J1B and the second dynamic circuit connector switch J2B closes, the voltage of the first lithium battery B1 is raised by described DC/DC booster circuit charge to energy storage inductor, after energy storage inductor is charged, described microprocessor controller controls the first dynamic circuit connector switch J1B and the second dynamic circuit connector switch J2B disconnects, control the 3rd dynamic circuit connector switch J3B and the 4th dynamic circuit connector switch J4B to close, energy storage inductor is charged to the 3rd lithium battery B3, until the first lithium battery B1 is equal with the electricity of the 3rd lithium battery B3.Cycling like this, until the electricity of all lithium batteries is equal, balanced end.
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 (4)
1. a multi-series lithium battery group big current equalizing circuit, comprise some lithium batteries connected successively, wherein, the negative pole of the first lithium battery is electrically connected with time positive pole of position lithium battery, and the negative pole of a upper lithium battery and the positive pole of next bit lithium battery are electrically connected, it is characterized in that, described multi-series lithium battery group big current equalizing circuit also comprises:
For controlling the microprocessor controller of whole circuit working;
For storing and the energy storage inductor of balanced electric energy;
For described lithium battery voltage being risen to the DC/DC booster circuit of described energy storage inductor supply power voltage, described DC/DC booster circuit and described energy storage inductor are electrically connected;
Several are for detecting the voltage comparator of lithium battery output voltage, and a described voltage comparator is connected between the positive pole of a described lithium battery and described microprocessor controller;
Several connect the permanent-magnet relay of described DC/DC booster circuit for controlling described lithium battery, described permanent-magnet relay and described microprocessor controller are electrically connected, described permanent-magnet relay comprises coil and dynamic circuit connector switch, one end of described coil and the output of described microprocessor controller are electrically connected, second end ground connection of described coil, the negative pole of lithium battery described in each be connected a described dynamic circuit connector switch between described DC/DC booster circuit, the positive pole of described the first lithium battery be connected a described dynamic circuit connector switch between described DC/DC booster circuit.
2. multi-series lithium battery group big current equalizing circuit as claimed in claim 1, it is characterized in that, the quantity of described voltage comparator equals the quantity of described lithium battery, and the quantity of described permanent-magnet relay is greater than the quantity of described lithium battery.
3. multi-series lithium battery group big current equalizing circuit as claimed in claim 1, it is characterized in that, load major loop is also connected with between the positive pole of described the first lithium battery and the negative pole of last position lithium battery, described load major loop is connected in series with load and control switch, and described control switch and described microprocessor controller are electrically connected.
4. multi-series lithium battery group big current equalizing circuit as claimed in claim 1, it is characterized in that, described voltage comparator comprises A/D convertor circuit and voltage swing comparison circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656269.5U CN204905945U (en) | 2015-08-28 | 2015-08-28 | Many strings of heavy current equalizer circuit of lithium cell group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656269.5U CN204905945U (en) | 2015-08-28 | 2015-08-28 | Many strings of heavy current equalizer circuit of lithium cell group |
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| CN204905945U true CN204905945U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520656269.5U Active CN204905945U (en) | 2015-08-28 | 2015-08-28 | Many strings of heavy current equalizer circuit of lithium cell group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453452A (en) * | 2017-09-25 | 2017-12-08 | 启攀微电子（上海）有限公司 | A kind of more battery core serial lithium batteries based on load switch |
| CN107978809A (en) * | 2017-12-06 | 2018-05-01 | 合肥国盛电池科技有限公司 | The dynamic lithium battery group traced to the source based on radio frequency |
| CN108407651A (en) * | 2018-04-16 | 2018-08-17 | 开封大学 | The two-way distributed power battery balanced management system of one kind and method |
-
2015
- 2015-08-28 CN CN201520656269.5U patent/CN204905945U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453452A (en) * | 2017-09-25 | 2017-12-08 | 启攀微电子（上海）有限公司 | A kind of more battery core serial lithium batteries based on load switch |
| CN107453452B (en) * | 2017-09-25 | 2023-11-21 | 启攀微电子（上海）有限公司 | Multi-cell series lithium battery based on load switch |
| CN107978809A (en) * | 2017-12-06 | 2018-05-01 | 合肥国盛电池科技有限公司 | The dynamic lithium battery group traced to the source based on radio frequency |
| CN108407651A (en) * | 2018-04-16 | 2018-08-17 | 开封大学 | The two-way distributed power battery balanced management system of one kind and method |
| CN108407651B (en) * | 2018-04-16 | 2021-06-08 | 开封大学 | Bidirectional distributed power battery balance management system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |
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| CP01 | Change in the name or title of a patent holder |