CN204947660U - Lithium battery group state monitoring device - Google Patents
Lithium battery group state monitoring device Download PDFInfo
- Publication number
- CN204947660U CN204947660U CN201520656948.2U CN201520656948U CN204947660U CN 204947660 U CN204947660 U CN 204947660U CN 201520656948 U CN201520656948 U CN 201520656948U CN 204947660 U CN204947660 U CN 204947660U
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- circuit
- lithium battery
- battery group
- mcu
- overvoltage
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A kind of lithium battery group state monitoring device; MCU circuit is connected with A/D convertor circuit; MCU circuit is connected with equalizing circuit and overvoltage/over-discharge protection circuit; equalizing circuit and overvoltage/over-discharge protection circuit are connected with lithium battery group; lithium battery group connection detection circuit; described testing circuit comprises voltage detecting circuit, temperature sensing circuit and current detection circuit; be connected with short-circuit protection circuit between described current detection circuit and lithium battery group, described voltage detecting circuit, temperature sensing circuit are connected A/D convertor circuit with current detection circuit.Its advantage to monitor the parameter such as voltage, temperature, electric current of lithium battery group in real time, judges whether to occur overvoltage, overdischarge or short circuit phenomenon, to determine whether start corresponding safeguard measure.
Description
Technical field
The utility model relates to secondary cell, relates to the instrument of the electrical conditions for test battery, espespecially a kind of lithium battery group state monitoring device.
Background technology
Lithium battery due to its discharge voltage stablize, operating temperature range is wide, self-discharge rate is low, storage life is long, memory-less effect, and volume is little, lightweight and nuisanceless etc., instead of lead acid accumulator, cadmium-nickel storage cell gradually now, application widely, such as, is all adopted in the devices such as notebook computer, communication radio station, portable electric appts, space satellite, electric bicycle and electric automobile and is used it as its power source.But lithium battery also has the shortcoming of himself:
(1) lithium battery is when charging, and the lithium ion stripping in positive pole is returned too much less than original state, and when causing battery discharge, lithium ion can not be filled into the passage of positive pole.Show as battery charging can not fill and cause permanent damage.The mode limiting charging voltage must be taked like this to control the measure of lithium ion stripping quantity;
(2) when lithium battery is put into terminal, will there is qualitative change in inner material, the lithium ion in the graphite linings namely on negative pole all comes off, during charging next time, loop is unobstructed not have the negative pole graphite linings of lithium ion just can not ensure, so the size of controlled discharge voltage of will taking measures;
If (3) accidentally make battery short circuit or charging and discharging currents excessive, internal temperature of battery can be made too high and consume energy, can discharge time be shortened like this.
Summary of the invention
For the shortcoming of prior art, the purpose of this utility model is to provide a kind of lithium battery group state monitoring device.
The utility model solves the technical scheme that its technical problem adopts: provide a kind of lithium battery group state monitoring device, it is characterized in that: comprise main control circuit, testing circuit, equalizing circuit, overvoltage/over-discharge protection circuit and short-circuit protection circuit, described main control circuit comprises again MCU circuit and A/D convertor circuit, MCU circuit is connected with A/D convertor circuit, MCU circuit is connected with equalizing circuit and overvoltage/over-discharge protection circuit, equalizing circuit and overvoltage/over-discharge protection circuit are connected with lithium battery group, lithium battery group connection detection circuit, described testing circuit comprises voltage detecting circuit, temperature sensing circuit and current detection circuit, short-circuit protection circuit is connected with between described current detection circuit and lithium battery group, described voltage detecting circuit, temperature sensing circuit is connected A/D convertor circuit with current detection circuit.
Described main control circuit can be connected with host computer.
The MCU of described MCU circuit can adopt the MSP430F233 of TI company.
Lithium battery group is in the process of discharge and recharge; testing circuit gathers parameters such as voltage, temperature, electric currents in real time; the signal simultaneously sampled sends into A/D convertor circuit; data after A/D conversion send into MCU; after MCU reads transformation result; transformation result and the parameter value preset are compared, judges whether to occur overvoltage, overdischarge or short circuit phenomenon, to determine whether start corresponding safeguard measure.Meanwhile, as required, MCU can upload the parameter such as voltage, electric current, temperature that collects in real time to host computer, by carrying out after host computer process showing and storing.In addition, master system also arranges relevant system parameters and data correction parameters by serial ports to MCU.
The beneficial effects of the utility model are: can monitor the parameter such as voltage, temperature, electric current of lithium battery group in real time, judge whether to occur overvoltage, overdischarge or short circuit phenomenon, to determine whether start corresponding safeguard measure.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model will be further described.
Fig. 1 is structural representation of the present utility model.
In figure: 1 be main control circuit, 11 be MCU circuit, 12 be A/D convertor circuit, 2 be testing circuit, 21 be voltage detecting circuit, 22 be temperature sensing circuit, 23 be current detection circuit, 3 be equalizing circuit, 4 be overvoltage/over-discharge protection circuit, 5 be lithium battery group, 6 be short-circuit protection circuit, 7 for host computer.
Embodiment
See accompanying drawing, a kind of lithium battery group of the utility model state monitoring device, it is characterized in that: comprise main control circuit 1, testing circuit 2, equalizing circuit 3, overvoltage/over-discharge protection circuit 4 and short-circuit protection circuit 6, described main control circuit 1 comprises again MCU circuit 11 and A/D convertor circuit 12, MCU circuit 11 is connected with A/D convertor circuit 12, MCU circuit 11 is connected with equalizing circuit 3 and overvoltage/over-discharge protection circuit 4, equalizing circuit 3 and overvoltage/over-discharge protection circuit 4 are connected with lithium battery group 5, lithium battery group 5 connection detection circuit 2, described testing circuit 2 comprises voltage detecting circuit 21, temperature sensing circuit 22 and current detection circuit 23, short-circuit protection circuit 6 is connected with between described current detection circuit 23 and lithium battery group 5, described voltage detecting circuit 21, temperature sensing circuit 22 is connected A/D convertor circuit 12 with current detection circuit 23.
In embodiment of the present utility model:
Described main control circuit 1 is connected 7 with host computer.
The MCU of described MCU circuit 11 adopts the MSP430F233 of TI company.
Claims (2)
1. a lithium battery group state monitoring device, it is characterized in that: comprise main control circuit, testing circuit, equalizing circuit, overvoltage/over-discharge protection circuit and short-circuit protection circuit, described main control circuit comprises again MCU circuit and A/D convertor circuit, MCU circuit is connected with A/D convertor circuit, MCU circuit is connected with equalizing circuit and overvoltage/over-discharge protection circuit, equalizing circuit and overvoltage/over-discharge protection circuit are connected with lithium battery group, lithium battery group connection detection circuit, described testing circuit comprises voltage detecting circuit, temperature sensing circuit and current detection circuit, short-circuit protection circuit is connected with between described current detection circuit and lithium battery group, described voltage detecting circuit, temperature sensing circuit is connected A/D convertor circuit with current detection circuit.
2. lithium battery group state monitoring device according to claim 1, is characterized in that:
The MCU of described MCU circuit adopts the MSP430F233 of TI company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656948.2U CN204947660U (en) | 2015-08-26 | 2015-08-26 | Lithium battery group state monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656948.2U CN204947660U (en) | 2015-08-26 | 2015-08-26 | Lithium battery group state monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204947660U true CN204947660U (en) | 2016-01-06 |
Family
ID=55015049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520656948.2U Expired - Fee Related CN204947660U (en) | 2015-08-26 | 2015-08-26 | Lithium battery group state monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204947660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947109A (en) * | 2017-12-27 | 2018-04-20 | 广西玉柴机器股份有限公司 | The electric pre-heating relay that high current is contactless |
-
2015
- 2015-08-26 CN CN201520656948.2U patent/CN204947660U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947109A (en) * | 2017-12-27 | 2018-04-20 | 广西玉柴机器股份有限公司 | The electric pre-heating relay that high current is contactless |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |