CN207098674U - A kind of lithium cell protecting device accurately controlled - Google Patents
A kind of lithium cell protecting device accurately controlled Download PDFInfo
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- CN207098674U CN207098674U CN201720852348.2U CN201720852348U CN207098674U CN 207098674 U CN207098674 U CN 207098674U CN 201720852348 U CN201720852348 U CN 201720852348U CN 207098674 U CN207098674 U CN 207098674U
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- lithium
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- protecting device
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Abstract
It the utility model is related to technical field of lithium batteries; a kind of more particularly to lithium cell protecting device accurately controlled; including controller, voltage sampling circuit, temperature sampling circuit, charge-discharge protection circuit and temperature protection circuit; the voltage sampling circuit and temperature sampling circuit are electrically connected with the battery cell in lithium battery group; the charge-discharge protection circuit is electrically connected with voltage sampling circuit; when detecting that connected any battery monomer voltage is inconsistent with other battery cell voltages, controller closes the battery cell；The temperature protection circuit is electrically connected with temperature sampling circuit, and when detecting that connected any battery monomer temperature is higher than given threshold, controller closes the battery cell.By obtaining the magnitude of voltage and temperature value of all battery cells in real time, management of charging and discharging and heat management are then carried out to battery cell according to the magnitude of voltage of acquisition and temperature value, so as to realize the modularization management to lithium battery group, precise management, safety and reliability.
Description
Technical field
Technical field of lithium batteries is the utility model is related to, more particularly to a kind of lithium cell protecting device accurately controlled.
Background technology
Lithium battery is because having the advantages that storage energy density is high, endurance is strong, in colliery, medical treatment, fire-fighting, civilian consumption
And widely used in digital product, because chemical composition is different quality is occurring for the high-capacity lithium ion cell that in the market uses
During problem, easy appearance blast casualty accident, the lithium ion battery of high power capacity, after being recycled for multiple times, thermal runaway threshold temperature
Can reduce, battery overheat can make battery material that irreversible change occur, in the event of thermal runaway, will abrupt release go out it is huge
Big heat, cause combustion or even explode.Lithium battery needs to prevent from overcharging in use, crosses and put, the otherwise use of lithium battery group
Life-span has a greatly reduced quality, and can produce unsafe factor.
Utility model content
The purpose of this utility model be to provide it is a kind of it is accurately controlling, lithium battery group service life can be effectively improved
Lithium cell protecting device.
What the utility model was realized in：A kind of lithium cell protecting device accurately controlled, for protecting multi-section serial
Lithium battery group, it is characterised in that including controller, voltage sampling circuit, temperature sampling circuit, charge-discharge protection circuit and temperature
Protection circuit, the voltage sampling circuit and temperature sampling circuit are electrically connected with the battery cell in lithium battery group, described
Charge-discharge protection circuit and voltage sampling circuit are electrically connected with, when detecting connected any battery monomer voltage and other electricity
When pond monomer voltage is inconsistent, controller closes the battery cell；The temperature protection circuit electrically connects with temperature sampling circuit
Connect, when detecting that connected any battery monomer temperature is higher than given threshold, controller closes the battery cell.
Wherein, the lithium cell protecting device also includes the mu balanced circuit electrically connected with lithium battery group, the mu balanced circuit
Including FET and TL431 chip circuits, the base stage of FET is connected with TL431 chip circuits, drain electrode and lithium battery group
Negative pole is connected, and the positive pole of source electrode and lithium battery group is connected, and the both ends of the TL431 chip circuits are connected with lithium battery group both ends.
Wherein, the lithium cell protecting device also includes protection revocation circuit, when the electricity for detecting to be turned off battery cell
Pressure is consistent with other battery cell voltages, and when temperature is less than given threshold, controller opens the battery cell.
Wherein, the controller opens and closes the battery cell by controlling metal-oxide-semiconductor.
Wherein, the lithium cell protecting device also includes the electric quantity display device being connected with the controller, for showing
The electric quantity data of lithium battery group.
The beneficial effects of the utility model are：The lithium cell protecting device accurately controlled, for protecting multi-section serial
Lithium battery group, including controller, voltage sampling circuit, temperature sampling circuit, charge-discharge protection circuit and temperature protection circuit, when
When detecting connected any battery monomer voltage and other inconsistent battery cell voltages, controller closes the battery list
Body；When detecting that connected any battery monomer temperature is higher than given threshold, controller closes the battery cell.Pass through reality
When obtain the magnitude of voltage and temperature value of all battery cells, then battery cell is carried out according to the magnitude of voltage of acquisition and temperature value
Management of charging and discharging and heat management, so as to realize the modularization management to lithium battery group, precise management, safety and reliability.
Brief description of the drawings
Fig. 1 is the theory diagram of the lithium cell protecting device embodiment described in the utility model accurately controlled.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As the embodiment of the lithium cell protecting device described in the utility model accurately controlled, as shown in figure 1, for protecting
Multiple serial lithium battery group, including controller, voltage sampling circuit, temperature sampling circuit, charge-discharge protection circuit and temperature are protected
Protection circuit, the voltage sampling circuit and temperature sampling circuit are electrically connected with the battery cell in lithium battery group, described to fill
Discharge protection circuit and voltage sampling circuit are electrically connected with, when detecting connected any battery monomer voltage and other batteries
When monomer voltage is inconsistent, controller closes the battery cell；The temperature protection circuit is electrically connected with temperature sampling circuit,
When detecting that connected any battery monomer temperature is higher than given threshold, controller closes the battery cell.
The utility model voltage sampling circuit is used for the real-time voltage for gathering battery cell, the collection of temperature sampling circuit used time
The real time temperature of battery cell, by obtaining the magnitude of voltage and temperature value of all battery cells in real time, then according to the electricity of acquisition
Pressure value and temperature value carry out management of charging and discharging and heat management to battery cell, so as to realize the modularization management to lithium battery group,
Precise management, safety and reliability.Temperature sampling circuit includes multiple temperature sensors, and temperature sensor can be thermal resistance temperature
Spend sensor or thermocouple temperature sensor.
In the present embodiment, the lithium cell protecting device also includes the mu balanced circuit electrically connected with lithium battery group, described
Mu balanced circuit includes FET (FET) and TL431 chip circuits, and base stage and the TL431 chip circuits of FET (FET) connect
Connect, drain electrode be connected with lithium battery group negative pole, and the positive pole of source electrode and lithium battery group connects, the both ends of the TL431 chip circuits and
Lithium battery group both ends connect.
In the present embodiment, the lithium cell protecting device also includes protection revocation circuit, when detecting to be turned off battery
The voltage of monomer is consistent with other battery cell voltages, and when temperature is less than given threshold, controller opens the battery cell, from
And avoid because external environment condition change greatly the reason for, cause problematic battery cell forever disabled, it is more intelligent.
In the present embodiment, the controller opens and closes the battery cell by controlling metal-oxide-semiconductor, and metal-oxide-semiconductor is made
There is higher flexibility and stability for switch control.
In the present embodiment, the lithium cell protecting device also includes the electric quantity display device being connected with the controller,
For showing the electric quantity data of lithium battery group, reference is provided for user.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of lithium cell protecting device accurately controlled, for protecting multiple serial lithium battery group, it is characterised in that including control
Device, voltage sampling circuit, temperature sampling circuit, charge-discharge protection circuit and temperature protection circuit processed, the voltage sampling circuit
It is electrically connected with temperature sampling circuit with the battery cell in lithium battery group, the charge-discharge protection circuit and voltage sample electricity
Road is electrically connected with, when detecting that connected any battery monomer voltage is inconsistent with other battery cell voltages, controller
Close the battery cell；The temperature protection circuit is electrically connected with temperature sampling circuit, when any electricity for detecting to be connected
When pond monomer temperature is higher than given threshold, controller closes the battery cell.
2. the lithium cell protecting device accurately controlled according to claim 1, it is characterised in that the lithium cell protecting device
Also include the mu balanced circuit electrically connected with lithium battery group, the mu balanced circuit includes FET and TL431 chip circuits, field effect
Should the base stage of pipe be connected with TL431 chip circuits, drain electrode is connected with lithium battery group negative pole, the positive pole company of source electrode and lithium battery group
Connect, the both ends of the TL431 chip circuits are connected with lithium battery group both ends.
3. the lithium cell protecting device accurately controlled according to claim 2, it is characterised in that the lithium cell protecting device
Also include protection revocation circuit, when detecting that the voltage for being turned off battery cell is consistent with other battery cell voltages, and temperature
During less than given threshold, controller opens the battery cell.
4. the lithium cell protecting device accurately controlled according to claim 3, it is characterised in that the controller passes through control
Metal-oxide-semiconductor opens and closes the battery cell.
5. the lithium cell protecting device accurately controlled according to claim 4, it is characterised in that the lithium cell protecting device
Also include the electric quantity display device being connected with the controller, for showing the electric quantity data of lithium battery group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720852348.2U CN207098674U (en) | 2017-07-13 | 2017-07-13 | A kind of lithium cell protecting device accurately controlled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720852348.2U CN207098674U (en) | 2017-07-13 | 2017-07-13 | A kind of lithium cell protecting device accurately controlled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098674U true CN207098674U (en) | 2018-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720852348.2U Active CN207098674U (en) | 2017-07-13 | 2017-07-13 | A kind of lithium cell protecting device accurately controlled |
Country Status (1)
| Country | Link |
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| CN (1) | CN207098674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037809A (en) * | 2018-09-05 | 2018-12-18 | 成都欧锐德智能设备有限公司 | A kind of intelligent lithium battery pack management system |
-
2017
- 2017-07-13 CN CN201720852348.2U patent/CN207098674U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037809A (en) * | 2018-09-05 | 2018-12-18 | 成都欧锐德智能设备有限公司 | A kind of intelligent lithium battery pack management system |
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