CN206922421U - A kind of battery core protection circuit - Google Patents
A kind of battery core protection circuit Download PDFInfo
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- CN206922421U CN206922421U CN201720914478.4U CN201720914478U CN206922421U CN 206922421 U CN206922421 U CN 206922421U CN 201720914478 U CN201720914478 U CN 201720914478U CN 206922421 U CN206922421 U CN 206922421U
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- battery core
- protection
- module
- control switch
- temp control
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model is a kind of battery core protection circuit, including battery core, IC1 protection modules, IC2 protection modules and temperature protection module, and the IC1 protection modules include IC1 and MOS1 and managed, and the battery core both ends are connected to after IC1 the and MOS1 pipes series connection；The IC2 protection modules include IC2 and MOS2 and managed, and the MOS2 pipes are connected to the battery core both ends after being connected with MOS1 pipes and IC2；The temperature protection module includes temp control switch and temperature detecting module, and the temp control switch is connected in parallel on the battery core both ends, and the temp control switch is connected with the temperature detecting module, and the temperature detecting module is connected with the IC1 and IC2；This battery core protection circuit can solve the problem that when overheating of conventional protection circuit, the problem of detection inaccuracy, delay, power consumption height, cost height etc., furthermore, it is possible to realize multiple protective circuit.
Description
Technical field
It the utility model is related to battery core protection field, especially a kind of battery core protection circuit.
Background technology
In recent years, because the needs of electronic product are on the increase, battery core is the requirement of electronic product, therefore the need of battery core
Also constantly to increase, still, for the safety problem of battery core, the also always problem of industry.
In current existing battery core protection scheme, mostly protected using IC, metal-oxide-semiconductor protection or NTC protections, still, used
Problems be present in scheme above：1. NTC active temperature monitoring is depended in current design unduly, and lacks passive mistake
Temperature protection, such design are built upon on battery core uniformity of temperature profile and the fast hypothesis of heat transfer, and actually this two
Point is all relatively inaccessible to, and the internal temperature of battery core needs conduction " could effectively notify " main frame to the NTC on plank
End is made a response, and this process is along with longer time and temperature difference.2. the temperature of fast charge battery core and battery core protection board/
Battery core design/battery core body structure design has great relation.Because by other extraneous factors（Such as protection board heater members）
Influence, NTC fails to the accurate actual temperature that must reflect current battery core, and at this time, host side can carry out temperature-compensating, but
Be, the irrational temperature-compensating of host side design engineer also can easily battery core bag heat management it is not normal.3. single NTC is actively
Temperature detection, it is unsatisfactory for more complicated charge requirement.4. extra passive protection device, such as PTC and Breaker
Temperature protection performance, it can arrange in pairs or groups to realize that dual-temperature is protected.But these passive devices need to take very big space and needed
Too high cost requirement is wanted, it is uncomfortable in two sets of IC and the application circuit of metal-oxide-semiconductor active protection scheme or NTC temperature monitorings
With.5. the circuit built by the individual devices of periphery can also realize double protection, but its power consumption is larger, is commonly mA levels
Not, it is unsatisfactory for mobile phone battery core super low-power consumption requirement.
Utility model content
In order to solve the above problems, the purpose of this utility model is to provide a kind of battery core protection circuit, this battery core protection electricity
Road can solve the problem that when overheating of conventional protection circuit, the problem of detection inaccuracy, delay, power consumption height, cost height etc., and
And, it is possible to achieve multiple protective circuit.
The technical solution of the utility model is as follows：
A kind of battery core protection circuit, including battery core, IC1 protection modules, IC2 protection modules and temperature protection module, it is described
Temperature protection module includes temp control switch and temperature detecting module, and the temp control switch is connected in parallel on the battery core two
End, the temp control switch connect with the temperature detecting module, and the temperature detecting module and the IC1 protection modules
Connected with IC2 protection modules.
Preferably, the temperature detecting module includes temperature sensor, comparator, reference voltage module, Postponement module, patrolled
Selecting module and output module are collected, the temperature sensor and the reference voltage module and the input of the comparator connect
Connect, the comparator is connected in series with the Postponement module and logic selecting module.Time delay module is set up, and relatively conventional sets
Meter can keep the instantaneity of transmission, be not in the phenomenon of delay.
Preferably, the output module is connected with the IC1 protection modules and IC2 protection modules.
Preferably, the temp control switch is active temp control switch or passive-type temp control switch.Actively
The setting of type temp control switch or passive-type temp control switch can be applicable more products and different demands.
Preferably, the active temp control switch both ends are additionally provided with filter capacitor.The setting of filter capacitor can be protected
Demonstrate,prove the stability of active temp control switch.
Preferably, the filter capacitor is provided with two.
Preferably, the IC1 protection modules include IC1 and MOS1 pipes, are connected to after IC1 the and MOS1 pipes series connection described
Battery core both ends.
Preferably, the IC2 protection modules include IC2 and MOS2 pipes, and the MOS2 pipes are connected with MOS1 pipes and IC2
After be connected to the battery core both ends.Temperature detecting module detects the temperature of battery core, and sends the signal of detection, when temperature reaches temperature
When spending the operating point of controlling switch, temp control switch disconnects, or the signal of output temperature detection module detection, directly controls
IC1 or IC2 cut-out battery core charging and discharging circuits, to prevent battery core from further overheating.
Using having the beneficial effect that for above technical scheme：
1. a battery core protection circuit can solve the problem that when overheating of conventional protection circuit, detection is inaccurate, is delayed, work(
The problem of consuming height, cost height etc., furthermore, it is possible to realize multiple protective circuit.
2. a battery core protection circuit is in the application of two sets of IC of tradition and metal-oxide-semiconductor active protection scheme or NTC temperature monitorings
In circuit, additionally increase a passive-type temp control switch or active temp control switch to reach the mesh of double protection
's.Temperature detecting module detects the temperature of battery core, and sends the signal of detection, when temperature reaches the operating point of temp control switch
When, temp control switch disconnects, or the signal of output temperature detection module detection, directly controls IC1 or IC2 cut-outs battery core to fill
Discharge loop, to prevent battery core from further overheating.
3. a battery core protection circuit is provided with time delay module, relatively conventional design can keep the instantaneity of transmission, will not
There is the phenomenon being delayed.
4. a battery core protecting circuit designed is simple, cost is cheap, moreover, greatly providing the security of battery core.
5. a battery core protection circuit has double temperature protection, in a heavy protection exception, start this secondary temperature
Protection, battery core are safer.Make up the deficiency in terms of the ageing and temperature difference of NTC active temperatures monitoring.
6. a battery core protection circuit temperature control is accurate, reachable ± 2.5 DEG C of accuracy of temperature control.
7. a battery core protection circuit temp control switch is low in energy consumption, active temp control switch consumption electric current is
0.18uA, passive-type temp control switch no consumption electric current, the electronic product battery core super long standby time duration requirement such as mobile phone can be met.
8. as long as one analog device of battery core protection circuit temp control switch, its temperature detection, sends cut-off loop
Signal or cut-off loop etc. are acted by hardware circuit complete independently.Differ with the temperature protection mechanism of the software detection of host side
Sample.Can avoid due to host side design it is unreasonable and caused by battery core heat management fail.
9. a battery core protection circuit circuit is simple, it is not necessary to excessive space, adapts to the needs of battery core miniaturization.
Brief description of the drawings
Fig. 1 is the circuit diagram that the utility model battery core protection circuit uses active temp control switch.
Fig. 2 is the circuit diagram that the utility model battery core protection circuit uses passive-type temp control switch.
Fig. 3 is the circuit diagram of the temperature detecting module of the utility model battery core protection circuit.
Embodiment
For the ease of it will be appreciated by those skilled in the art that entering to advance to the utility model below in conjunction with accompanying drawing and embodiment
One step is described in detail.
Embodiment one
As shown in drawings, a kind of battery core protection circuit, including battery core, IC1 protection modules, IC2 protection modules and temperature are protected
Module is protected, IC1 protection modules include IC1 and MOS1 and managed, and battery core both ends are connected to after the series connection of IC1 and MOS1 pipes；IC2 protection modules
Managed including IC2 and MOS2, MOS2 pipes are connected to battery core both ends after being connected with MOS1 pipes and IC2；Temperature protection module includes temperature
Controlling switch and temperature detecting module, temp control switch are connected in parallel on battery core both ends, temp control switch and temperature detecting module
Connection, and temperature detecting module be connected with IC1 and IC2, in the present embodiment the signal of temperature detecting module detection by DET ends with
Vdd terminal exports, and is uniformly transferred to IC1, IC2 and temp control switch by SW ends.Temperature detecting module detects the temperature of battery core,
And the signal of detection is sent, when temperature reaches the operating point of temp control switch, temp control switch disconnects, or output temperature
The signal of detection module detection is spent, IC1 or IC2 cut-out battery core charging and discharging circuits are directly controlled, to prevent battery core from further overheating.
Specifically, temperature detecting module includes temperature sensor, comparator, reference voltage module, Postponement module, logic choosing
Select module and output module, temperature sensor and the connection of the input of reference voltage module and comparator, comparator and delay mould
Block and logic selecting module are connected in series.Time delay module is set up, and relatively conventional design can keep the instantaneity of transmission, no
The phenomenon of delay occurs.
Specifically, temp control switch is active temp control switch or passive-type temp control switch.Active temperature
The setting of degree controlling switch or passive-type temp control switch can be applicable more products and different demands.Active temperature
Controlling switch both ends are additionally provided with two filter capacitors, C6 and C7, as shown in Figure 1.Filter capacitor C6 and filter capacitor C7 setting
The stability of active temp control switch can be ensured.The present embodiment using active temp control switch, both ends
Voltage is U3, as shown in Figure 1.
Embodiment two
The use passive-type temp control switch of battery core protection circuit in the present embodiment two, the voltage at both ends is U4, its
His part and connected mode are identical with embodiment one.Passive-type temp control switch no consumption electric current, can meet the electricity such as mobile phone
Sub- product battery core super long standby time duration requirement.
Above is with reference to the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Claims (8)
1. a kind of battery core protection circuit, it is characterised in that including battery core, IC1 protection modules, IC2 protection modules and temperature protection
Module, the temperature protection module include temp control switch and temperature detecting module, and the temp control switch is connected in parallel on institute
Battery core both ends are stated, the temp control switch connects with the temperature detecting module, and the temperature detecting module and the IC1
Protection module connects with IC2 protection modules.
2. battery core protection circuit according to claim 1, it is characterised in that the temperature detecting module includes TEMP
Device, comparator, reference voltage module, Postponement module, logic selecting module and output module, the temperature sensor and the base
Quasi- voltage module is connected with the input of the comparator, and the comparator is connected with the Postponement module and logic selecting module
Connection.
3. battery core protection circuit according to claim 2, it is characterised in that the output module and IC1 protection moulds
Block connects with IC2 protection modules.
4. according to the battery core protection circuit described in claim any one of 1-3, it is characterised in that based on the temp control switch
Ejector half temp control switch or passive-type temp control switch.
5. battery core protection circuit according to claim 4, it is characterised in that the active temp control switch both ends are set
There is filter capacitor.
6. battery core protection circuit according to claim 5, it is characterised in that the filter capacitor is provided with two.
7. battery core protection circuit according to claim 1, it is characterised in that the IC1 protection modules include IC1 and MOS1
Pipe, the battery core both ends are connected to after IC1 the and MOS1 pipes series connection.
8. battery core protection circuit according to claim 7, it is characterised in that the IC2 protection modules include IC2 and MOS2
Pipe, the MOS2 pipes are connected to the battery core both ends after being connected with MOS1 pipes and IC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914478.4U CN206922421U (en) | 2017-07-26 | 2017-07-26 | A kind of battery core protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914478.4U CN206922421U (en) | 2017-07-26 | 2017-07-26 | A kind of battery core protection circuit |
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| Publication Number | Publication Date |
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| CN206922421U true CN206922421U (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720914478.4U Active CN206922421U (en) | 2017-07-26 | 2017-07-26 | A kind of battery core protection circuit |
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| CN (1) | CN206922421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359596A (en) * | 2017-07-26 | 2017-11-17 | 惠州市德赛电池有限公司 | A kind of battery core protection circuit |
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2017
- 2017-07-26 CN CN201720914478.4U patent/CN206922421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359596A (en) * | 2017-07-26 | 2017-11-17 | 惠州市德赛电池有限公司 | A kind of battery core protection circuit |
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