CN206564460U - A kind of lithium ion battery - Google Patents
A kind of lithium ion battery Download PDFInfo
- Publication number
- CN206564460U CN206564460U CN201621170167.3U CN201621170167U CN206564460U CN 206564460 U CN206564460 U CN 206564460U CN 201621170167 U CN201621170167 U CN 201621170167U CN 206564460 U CN206564460 U CN 206564460U
- Authority
- CN
- China
- Prior art keywords
- battery
- lithium ion
- resistance
- output end
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 45
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 40
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
- 229910052744 lithium Inorganic materials 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 210000004027 cell Anatomy 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a kind of lithium ion battery, the outside of battery core is provided with PTC resistor, and PTC resistor is connected to battery core negative pole end, utilize characteristic of the PTC resistor with the rise resistance increase of temperature, temperature outside battery core is monitored, it is additionally provided with Li battery protection IC and charge and discharge control chip simultaneously, discharge and recharge to lithium ion battery is monitored, overcurrent protection is carried out again to lithium ion battery, simultaneously, NTC resistance is also associated with the second output end of lithium ion battery, the characteristic reduced using NTC resistance with the rise of temperature, lithium ion battery is monitored and protected again, in whole protection circuit, both the size of electric current can be detected, the temperature around battery core can be monitored again, duplicate protection has been carried out to lithium ion battery, in the case that lithium ion protection circuit fails, the battery core of lithium ion battery can also be protected, security is higher, it is smaller.
Description
Technical field
The utility model is related to technical field of lithium batteries, more particularly to a kind of battery protected with electric current and temperature dual
Protection circuit and lithium ion battery.
Background technology
With the development of science and technology, electronic technology has become the life necessary article of people, in daily life, various
The electronic product of mobile model is required for using battery, and lithium battery is due to that can charge repeatedly, and more energy-conserving and environment-protective extensively should
With.
But, with the increase of the popularization of electronic product, and lithium ion battery endurance, the safety of lithium ion battery
Sex chromosome mosaicism is also frequently produced, cells burst blast, and the safety problem such as leakage is by people's extensive concern, mobile phone, flat board, MP3 etc.
Electronic product is as the personal article of people, and cells burst blast can give people to bring greatly potential safety hazard, and lithium ion battery
There is combustion explosion security incident, be due to that battery is excessive using electric current, use environment temperature is too high, lithium ion battery protecting plate
Used MOS parts easily breakdown damage and cause, therefore in order to which the security for improving lithium ion battery is extremely urgent.
Utility model content
For weak point present in above-mentioned technology, the utility model provides a kind of in lithium ion battery protecting plate failure
In the case of can also carry out the lithium ion battery of electric current and the duplicate protection of temperature protection.
To achieve the above object, the utility model provides a kind of lithium ion battery, including a battery protecting circuit, the electricity
Pond protection circuit includes Li battery protection IC, charge and discharge control chip, NTC resistance, PTC resistor, the li-ion cell protection core
Piece connects battery core positive pole, battery core negative pole and the output end of battery first and the output end of battery second, the battery core positive pole and electricity respectively
Electrically connect, divide after the battery core negative pole series connection PTC resistor with Li battery protection IC after the output end series connection first resistor of pond first
It is not connected, and is electrically connected with charge and discharge control chip with the VSS ends of Li battery protection IC, the Li battery protection IC
VM is electrically connected with charge and discharge control chip and the output end of battery second respectively after being connected with second resistance at end, the li-ion cell protection
Also external first electric capacity of connecting between the vdd terminal of chip and VSS ends, the charge and discharge control chip respectively with li-ion cell protection core
The DO ends of piece and the electrical connection of CO ends；Mould is monitored by the resistance after NTC resistance of connecting with end product in second output end
Block is electrically connected；Wiring board packaged by the battery protecting circuit is arranged on wherein one end of lithium ion battery, the NTC resistance
Output end set assist side center, axisymmetric left and right ends are respectively arranged with battery centered on NTC resistance
First output end and the output end of battery second, battery core positive pole and battery core negative pole are also symmetrical set centered on NTC resistance
The two ends of wiring board；A length of 15.0 ± the 0.2mm of plate of the wiring board, a width of 4.0 ± 0.2mm, thickness of slab is 0.6 ± 0.2mm.
Wherein, the Li battery protection IC uses S8261-G3J chips.
Wherein, the charge and discharge control chip uses HD8205 chips.
Wherein, the PTC resistor uses SMD0805P075TF model resistance.
Wherein, the NTC resistance uses the model resistance of SMD 100K Ω ± 1%.
Wherein, the first resistor is 470 Ω, and the second resistance is 2K Ω, and first electric capacity is 0.1 μ f.
The beneficial effects of the utility model are：Compared with prior art, one kind that the utility model is provided is protected with battery
The lithium ion battery of protection circuit, is provided with PTC resistor on the outer protection circuit of battery core, and PTC resistor is connected to battery core and born
Extremely, using characteristic of the PTC resistor with the rise resistance increase of temperature, the temperature outside battery core is monitored, while also setting
Li battery protection IC and charge and discharge control chip are equipped with, the discharge and recharge to lithium ion battery is monitored, to lithium ion battery
Carry out overcurrent protection again, meanwhile, be also associated with NTC resistance in the second output end of lithium ion battery, by with end
Hold the resistance monitoring module electrical connection of pad, the characteristic reduced using NTC resistance with the rise of temperature, again to lithium ion
Battery is monitored and protected, in whole protection circuit, and NTC resistance, PTC resistor and lithium ion protection circuit are used simultaneously, both
The size of electric current can be detected, the temperature around battery core can be monitored again, duplicate protection has been carried out to lithium ion battery, even in
In the case that lithium ion protection circuit fails, the battery core of lithium ion battery can also be protected, security is higher.
Brief description of the drawings
Fig. 1 is the circuit diagram of battery protecting circuit in the utility model embodiment；
Fig. 2 is the structural representation of the lithium ion battery wiring board of the utility model embodiment.
Embodiment
In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model of the present utility model provides a kind of lithium ion battery with battery protecting circuit,
Including Li battery protection IC U1, charge and discharge control chip U2, NTC resistance F1 and PTC resistance R3, in the present embodiment, lithium electricity
Pond protection chip U1 uses S8261-G3J chips, but is not limited in a kind of this chip, the present embodiment using S8261 series
Chip, it is internally provided with high-accuracy voltage detection circuit and delay circuit, has to lithium ion chargeable battery and protect well
Shield property, the S8261-G3J chips of the present embodiment have six pins, respectively positive source input vdd terminal, power cathode
Overcurrent detection terminal VM ends, measuring delay time for use in said calibrating terminal DP ends between input VSS ends, VM-VSS, control of discharge
FET gate pole output end DO ends and charge control FET gate pole output end CO ends, in the present embodiment, time delay
Determine hanging with calibrating terminal DP ends, and DO ends are electrically connected with charge and discharge control chip U2 respectively with CO ends, in the present embodiment,
Charge and discharge control chip U2 uses HD8205 chips, is internally provided with double power field effect pipes, be conducive to charging to battery and
Two processes of electric discharge are protected.
In the present embodiment, after battery core positive pole B+ and the first output end of battery P+ series connection first resistor R1 with li-ion cell protection
The vdd terminal electrical connection of chip, first resistor R1 selects 470 Ω resistance, and vdd terminal and the VSS ends of Li battery protection IC
Outside is also in series with 0.1 μ f the first electric capacity C1, the voltage for detecting battery core, when the voltage of lithium battery electric core is more than 4.25V
When, Li battery protection IC U1 CO pin output signals make the grid for the FET being attached thereto on charge and discharge control chip
With source class shut-off, lithium battery stops charging immediately, so that prevent lithium battery because of overcharge along bad, in discharge process, lithium electricity
Pond protection chip U1 vdd terminal and VSS ends pin detects lithium battery voltage by first resistor R1, when the voltage drop of lithium battery
During to 2.3V, Li battery protection IC U1 DO pin output signals make the corresponding fields for the charge and discharge control chip U2 being attached thereto
Grid and source class the pin shut-off of effect pipe, lithium battery stops electric discharge immediately, so as to prevent lithium battery from being damaged because of overdischarge.
In the present embodiment, Li battery protection IC U1 VM pins and VSS pins detects charge and discharge by second resistance R2
One end of the voltage at electric control chip U2 two ends, specially Li battery protection IC U1 VSS ends and charge and discharge control chip U2
Electrically connected after electrical connection, VM ends series connection second resistance R2 with the charge and discharge control chip U2 other end, meanwhile, second resistance R2 is also
Directly electrically connected with the second output end of battery P-, in the present embodiment, second resistance R2 is 2K Ω, mainly for detection of discharge and recharge
The voltage at control chip U2 two ends, when battery output short-circuit, charge and discharge control chip U2 conduction voltage drop suddenly increases, VM pins
Voltage is raised rapidly, and Li battery protection IC U1 output signal imitates the field on the charge and discharge control chip U2 being connected with DO ends
Should pipe shut-off, so as to realize overcurrent or short-circuit protection.
In the present embodiment, battery core negative pole B- connect a PTC resistor F1 after respectively with VSS ends and charge and discharge control chip
U2 is electrically connected, and so, battery core positive pole B+, the first electric capacity C1, PTC resistor F1 and battery core negative pole B- are to constitute a loop, PTC
Resistance F1 uses SMD0805P075TF model resistance, the feelings damaged as Li battery protection IC U1 and charge and discharge control chip U2
Under condition, the first electric capacity C1 can be also damaged, so that battery core positive pole B+, the first electric capacity C1, PTC resistor F1 and battery core negative pole B- are to constitute
Loop conducting, PTC resistor F1 should be the rise of external temperature, the resistance value rise of itself, when resistance value reaches to a certain degree
When, the effect of line disconnection is reached, so as to protect lithium battery.
In the present embodiment, the resistance monitoring module on the second output end P- after series connection NTC resistance R3 with end product
Electrical connection, NTC resistance R3 uses the model resistance of SMD 100K Ω ± 1%, and in the present embodiment, end product connects battery respectively
First output end P+, battery the second output end P- and NTC resistance R3 output end, using NTC resistance R3 with the rise of temperature
The characteristic of reduction, when the temperature increases, the resistance value on NTC resistance R3 diminish, so that the resistance monitoring module being attached thereto
(not shown) is monitored, when there is abnormal current, disconnecting circuit or transmission abnormal signal, so as to reach the purpose of protection lithium battery.
Referring to Fig. 2, in the present embodiment, battery protecting circuit integration packaging is arranged on lithium on a wiring board
Wherein one end of ion battery, NTC resistance R3 output end sets the center of assist side, with NTC resistance R3 output
Axisymmetric left and right ends are respectively arranged with battery the first output end P+ and battery the second output end P- centered on the T of end, and battery core is just
Pole B+ and battery core negative pole B- are also symmetrical set the two ends of assist side centered on NTC resistance R3 output end T respectively,
And a length of 15.0 ± 0.2mm of plate of wiring board, a width of 4.0 ± 0.2mm, thickness of slab is 0.6 ± 0.2mm, battery core positive pole B+ and battery core
A width of 3.0mm of negative pole B- output ends, battery the first output end P+ and the second output end of battery P- a width of 1.8mm, it is a length of
2.0mm, the long back gauge with wiring board is 0.3mm, and the spacing with resistance R3 output end T is 0.8mm, and such size allows
It is smaller that lithium ion battery is worked it out, and saves the inner space of electronic product.
Advantage of the present utility model is：
1) security is higher, and PTC resistor is connected with the outer end of battery core positive pole and negative pole, and PTC resistor can also be individually right
The temperature of inside lithium ion cell is monitored, when temperature is too high, and automatic open-circuit line makes battery protection safer；
2) electrically connected in the output end of battery second series connection NTC resistance with the resistance monitoring module of end product, utilize NTC
The characteristic that resistance is reduced with the rise of temperature, the effectively monitoring by resistance monitoring module to battery progress again, control
Battery temperature, makes battery security higher；
3), can be with while coordinate Li battery protection IC and charge and discharge control chip in addition to PTC resistor, NTC resistance
Discharge and recharge using Li battery protection IC and charge and discharge control chip to lithium battery carries out overcurrent protection, protects more complete
Face.
Disclosed above is only several specific embodiments of the present utility model, but the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into protection domain of the present utility model.
Claims (6)
1. a kind of lithium ion battery, it is characterised in that including a battery protecting circuit, the battery protecting circuit includes lithium battery
Chip, charge and discharge control chip, NTC resistance, PTC resistor are protected, the Li battery protection IC connects battery core positive pole, electricity respectively
Core negative pole and the output end of battery first and the output end of battery second, the electricity of the output end of battery core Anode and battery first series connection first
Electrically connected after resistance with Li battery protection IC, the VSS after the battery core negative pole series connection PTC resistor respectively with Li battery protection IC
End connection, and electrically connected with charge and discharge control chip, the VM ends of the Li battery protection IC are divided after being connected with second resistance
Do not electrically connected with charge and discharge control chip and the output end of battery second, between the vdd terminal of the Li battery protection IC and VSS ends
Also external first electric capacity of connecting, the charge and discharge control chip is electrically connected with the DO ends and CO ends of Li battery protection IC respectively；
By being electrically connected after NTC resistance of connecting with the resistance monitoring module of end product in second output end；The battery protection
Wiring board packaged by circuit is arranged on wherein one end of lithium ion battery, and the output end of the NTC resistance sets assist side
Center, axisymmetric left and right ends are respectively arranged with the output end of battery first and battery second centered on NTC resistance
Output end, battery core positive pole and battery core negative pole are also symmetrical set the two ends of assist side centered on NTC resistance；The circuit
A length of 15.0 ± the 0.2mm of plate of plate, a width of 4.0 ± 0.2mm, thickness of slab is 0.6 ± 0.2mm.
2. lithium ion battery according to claim 1, it is characterised in that the Li battery protection IC uses S8261-
G3J chips.
3. lithium ion battery according to claim 1, it is characterised in that the charge and discharge control chip uses HD8205 cores
Piece.
4. lithium ion battery according to claim 1, it is characterised in that the PTC resistor uses SMD0805P075TF types
Number resistance.
5. lithium ion battery according to claim 1, it is characterised in that the NTC resistance uses SMD 100K Ω ± 1%
Model resistance.
6. lithium ion battery according to claim 1, it is characterised in that the first resistor is 470 Ω, second electricity
Hinder for 2K Ω, first electric capacity is 0.1 μ f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170167.3U CN206564460U (en) | 2016-11-02 | 2016-11-02 | A kind of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170167.3U CN206564460U (en) | 2016-11-02 | 2016-11-02 | A kind of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564460U true CN206564460U (en) | 2017-10-17 |
Family
ID=60028336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621170167.3U Expired - Fee Related CN206564460U (en) | 2016-11-02 | 2016-11-02 | A kind of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206564460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834670A (en) * | 2017-12-14 | 2018-03-23 | 惠州市盛微电子有限公司 | A kind of lithium battery protection circuit applied to mobile phone |
| CN115085310A (en) * | 2022-06-01 | 2022-09-20 | 深圳市宝尔爱迪科技有限公司 | Heating protection circuit and electronic equipment |
-
2016
- 2016-11-02 CN CN201621170167.3U patent/CN206564460U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834670A (en) * | 2017-12-14 | 2018-03-23 | 惠州市盛微电子有限公司 | A kind of lithium battery protection circuit applied to mobile phone |
| CN115085310A (en) * | 2022-06-01 | 2022-09-20 | 深圳市宝尔爱迪科技有限公司 | Heating protection circuit and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107231015B (en) | A battery, terminal and charging system | |
| CN104600676B (en) | Battery protecting circuit, electric energy provide device and electronic installation | |
| CN204258279U (en) | A kind of lithium battery low voltage protection circuit | |
| CN103515937B (en) | Battery protection circuit with secondary overvoltage and undervoltage protection function | |
| CN206076978U (en) | A kind of two grades of anti-overcharge protection boards of lithium battery | |
| CN105048607B (en) | A kind of new multi output lithium battery source device and its control method | |
| CN111740388A (en) | Power protection circuit, electronic cigarette, power protection method and device | |
| CN105470925A (en) | Secondary battery protection circuit and battery device | |
| CN206564460U (en) | A kind of lithium ion battery | |
| WO2017219359A1 (en) | Multi-lug battery | |
| CN202678945U (en) | Waterproof protector of lithium battery | |
| CN207743302U (en) | A kind of poly-lithium battery protection board | |
| TW202004208A (en) | Battery swell detection device | |
| CN107834670A (en) | A kind of lithium battery protection circuit applied to mobile phone | |
| CN201601479U (en) | Fault detection and protection circuit for soft packaged lithium battery | |
| CN205282574U (en) | Novel electric core structure of battery | |
| CN209267231U (en) | A kind of novel patch integrated protective circuit device and its charge protector of application | |
| CN105048579B (en) | It is a kind of to solve the problems, such as between different battery packs the mutually method of discharge and recharge | |
| CN204290423U (en) | Lithium battery charging circuit | |
| CN107482261A (en) | A kind of polymer battery and mobile terminal based on mobile terminal | |
| KR102320110B1 (en) | Battery proction circuit using a currnt sensing resistor | |
| CN204205573U (en) | Charge protector of battery | |
| CN203707829U (en) | Low-temperature lithium battery unit of portable computer | |
| TWI509936B (en) | Smart battery management system with the capability of charging single battery cells and discharging battery pack | |
| CN204361725U (en) | The circuit board of power management and portable power source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20191102 |