CN205509480U - Lithium cell protecting device - Google Patents
Lithium cell protecting device Download PDFInfo
- Publication number
- CN205509480U CN205509480U CN201620336372.6U CN201620336372U CN205509480U CN 205509480 U CN205509480 U CN 205509480U CN 201620336372 U CN201620336372 U CN 201620336372U CN 205509480 U CN205509480 U CN 205509480U
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- Prior art keywords
- circuit
- lithium cell
- short
- super
- normally
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a lithium cell protecting device, include the lithium cell group that forms by the A series of cells more than two, it puts detection circuitry still to include to fill, the current detection circui, short -circuit protection circuit, temperature measurement circuit, a controller, drive circuit, warning circuit and display circuit, every battery of lithium cell group was connected respectively and was filled the input of putting detection circuitry, whole lithium cell junction current detection circuitry of group and short -circuit protection circuit's input, it puts detection circuitry to cross to fill, current detection circuit and short -circuit protection circuit's output connection director, temperature measurement circuit, drive circuit, warning circuit and display circuit link to each other with the controller respectively, normally closed contact of every A series of cells of lithium cell group, parallelly connected normally open contact in the circuit behind the normally closed contact series of every battery and correspondence, drive circuit can control the change of normally closed contact and normally open contact's state. The utility model discloses rational in infrastructure, the reliable operation reduces the potential safety hazard.
Description
Technical field
This utility model relates to technical field of electric control, especially a kind of lithium cell protecting device.
Background technology
Owing to lithium battery has the features such as volume is little, lightweight, endurance is strong, it is widely used in digital electricity
In sub-product.During the use of lithium battery, hidden in order to reduce the safety crossing conductance cause because lithium battery is overheated
Suffering from, improve the functional reliability of lithium battery, the general all mating protection devices of lithium battery group use.Present stage
Battery operated situation is mostly monitored by lithium cell protecting device from the several index of electric current, voltage and temperature,
As the dynamic lithium battery group being powered by the series connection of multiple cells, owing to each cell characteristic is each
Different, charging and discharging capabilities is different from each other, according to unified discharge and recharge, it is easy to cause the difference between cell
Increasing, cause lithium battery group entirety flying power to reduce, service life shortens.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of li-ion cell protection dress
Put, rational in infrastructure, reliable operation, can intuitively show duty and the electricity service condition of lithium battery group,
Automatically control discharge and recharge, reduce potential safety hazard.
For reaching above-mentioned purpose, the technical solution of the utility model is: lithium cell protecting device, including by two
The lithium battery group that individual above battery is in series, also include super-charge super-discharge testing circuit, current detection circuit,
Short-circuit protection circuit, temperature sensing circuit, controller, drive circuit, warning circuit and display circuit, institute
The each battery stating lithium battery group connects the input of super-charge super-discharge testing circuit respectively, and whole lithium battery group is even
Connect the input of current detection circuit and short-circuit protection circuit, described super-charge super-discharge testing circuit, current detecting
The outfan of circuit and short-circuit protection circuit connects controller, described temperature sensing circuit, drive circuit, report
Alert circuit is connected with controller respectively with display circuit, and each battery series connection one of described lithium battery group is normally closed
One normally opened contact of circuit in parallel after contact, each battery and the series connection of corresponding normally-closed contact, described driving
Circuit can control the change of the state of normally-closed contact and normally opened contact.
Described display circuit connects display screen.
Described temperature sensing circuit is provided with temperature sensor and the analog digital conversion electricity being connected with temperature sensor
Road.
The beneficial effects of the utility model are: by the voltage of super-charge super-discharge testing circuit monitoring single battery,
Being not result in overcharging or crossing the phenomenon put, this utility model possessed the function of stream, short-circuit protection simultaneously, can
The display voltage of lithium battery group directly perceived, electric current, electricity and duty, it is simple to the daily monitoring of user.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: lithium battery group 1, super-charge super-discharge testing circuit 2, current detection circuit 3, short-circuit protection circuit
4, temperature sensing circuit 5, controller 6, drive circuit 7, warning circuit 8, display circuit 9, display screen
10, normally-closed contact 11, normally opened contact 12.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, the technical solution of the utility model is made the most concrete
Explanation.
As it is shown in figure 1, lithium cell protecting device, including the lithium battery being in series by plural battery
Group 1, also includes that super-charge super-discharge testing circuit 2, current detection circuit 3, short-circuit protection circuit 4, temperature are examined
Slowdown monitoring circuit 5, controller 6, drive circuit 7, warning circuit 8 and display circuit 9, described lithium battery group 1
Each battery connect the input of super-charge super-discharge testing circuit 2 respectively, whole lithium battery group 1 connects electric current
Testing circuit 3 and the input of short-circuit protection circuit 4, described super-charge super-discharge testing circuit 2, current detecting electricity
The outfan of road 3 and short-circuit protection circuit 4 connects controller 6 so that this utility model have overvoltage, under-voltage,
Cross the function of stream and short-circuit protection.
Described temperature sensing circuit 5, drive circuit 7, warning circuit 8 and display circuit 9 respectively with controller
6 are connected, and warning circuit 8 sends alarm signal when voltage, electric current or temperature anomaly being detected.
Described display circuit 9 connects display screen 10, for showing the voltage of lithium battery group 1, electric current, electricity
Amount and duty.
Described temperature sensing circuit 5 is provided with temperature sensor and the analog digital conversion being connected with temperature sensor
Circuit, it is achieved the real-time monitoring to the temperature of lithium battery group 1.
Each battery one normally-closed contact 11 of series connection of described lithium battery group 1, each battery is normally closed with correspondence
One normally opened contact 12 of circuit in parallel after the series connection of contact 11, described drive circuit 7 can control normally-closed contact
11 and the change of state of normally opened contact 12, when lithium battery group 1 is charged, normally-closed contact 11 closes, often
Opening contact 12 to disconnect, each battery can charge normal, when super-charge super-discharge testing circuit 2 detects certain electricity
When the voltage in pond is increased to upper voltage limit, controller 6 controls drive circuit 7 action so that normally-closed contact 11
Disconnecting, normally opened contact 12 closes, and this battery is isolated charge circuit, until all batteries are disconnected after being filled with
Open charge circuit；When lithium battery group 1 is discharged, when super-charge super-discharge testing circuit 2 detects the electricity of certain battery
Pressure is when being reduced to lower voltage limit, and controller 6 controls drive circuit 7 and charge circuit accesses lithium battery group 1 enters
Row charging so that whole lithium battery group 1 is not at overcharging or crossing putting state, reduces potential safety hazard.
The above, only this utility model preferably detailed description of the invention, but protection model of the present utility model
Enclose and be not limited thereto, the technology model that any those familiar with the art discloses at this utility model
In enclosing, the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.
Claims (3)
1. lithium cell protecting device, including the lithium battery group (1) being in series by plural battery, its
It is characterised by: also include super-charge super-discharge testing circuit (2), current detection circuit (3), short-circuit protection circuit
(4), temperature sensing circuit (5), controller (6), drive circuit (7), warning circuit (8) and display
Circuit (9), each battery of described lithium battery group (1) connects super-charge super-discharge testing circuit (2) respectively
Input, whole lithium battery group (1) connects current detection circuit (3) and short-circuit protection circuit (4) defeated
Enter end, described super-charge super-discharge testing circuit (2), current detection circuit (3) and short-circuit protection circuit (4)
Outfan connect controller (6), described temperature sensing circuit (5), drive circuit (7), warning circuit
(8) it is connected with controller (6) respectively with display circuit (9), each electricity of described lithium battery group (1)
Circuit after one normally-closed contact (11) of pond series connection, each battery and the series connection of corresponding normally-closed contact (11) is also
Join a normally opened contact (12), described drive circuit (7) can control normally-closed contact (11) and normally opened touch
The change of the state of point (12).
2. lithium cell protecting device as claimed in claim 1, it is characterised in that: described display circuit (9) is even
It is connected to display screen (10).
3. lithium cell protecting device as claimed in claim 1, it is characterised in that: described temperature sensing circuit (5)
In be provided with temperature sensor and the analog to digital conversion circuit being connected with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336372.6U CN205509480U (en) | 2016-04-19 | 2016-04-19 | Lithium cell protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336372.6U CN205509480U (en) | 2016-04-19 | 2016-04-19 | Lithium cell protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205509480U true CN205509480U (en) | 2016-08-24 |
Family
ID=56705691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620336372.6U Expired - Fee Related CN205509480U (en) | 2016-04-19 | 2016-04-19 | Lithium cell protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205509480U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359374A (en) * | 2017-08-18 | 2017-11-17 | 联想(北京)有限公司 | Method, equipment and memory devices for treatment of battery potential safety hazard |
| CN108461801A (en) * | 2018-03-29 | 2018-08-28 | 努比亚技术有限公司 | Chain type battery and electronic device |
-
2016
- 2016-04-19 CN CN201620336372.6U patent/CN205509480U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359374A (en) * | 2017-08-18 | 2017-11-17 | 联想(北京)有限公司 | Method, equipment and memory devices for treatment of battery potential safety hazard |
| CN107359374B (en) * | 2017-08-18 | 2020-04-24 | 联想(北京)有限公司 | Method, device and memory device for handling battery safety hazards |
| CN108461801A (en) * | 2018-03-29 | 2018-08-28 | 努比亚技术有限公司 | Chain type battery and electronic device |
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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: 20160824 Termination date: 20170419 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |