CN207440270U - A kind of lithium battery protection board is overcharged with crossing the detecting system put - Google Patents
A kind of lithium battery protection board is overcharged with crossing the detecting system put Download PDFInfo
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- CN207440270U CN207440270U CN201721375685.3U CN201721375685U CN207440270U CN 207440270 U CN207440270 U CN 207440270U CN 201721375685 U CN201721375685 U CN 201721375685U CN 207440270 U CN207440270 U CN 207440270U
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- battery protection
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Abstract
The utility model discloses a kind of lithium battery protection boards to overcharge with crossing the detecting system put, including simulated battery module, the simulated battery module is connected by conducting wire with battery incoming end, the battery incoming end is connected by conducting wire with charge and discharge control switch mosfet and battery protection chip respectively, the charge and discharge control switch mosfet is connected by conducting wire with battery protection chip, the charge and discharge control switch mosfet and battery protection chip are connected by conducting wire with battery output, the battery output by conducting wire with can program mode power supply with load coenosarc module be connected, it is described can program mode power supply with load coenosarc module on be provided with along become trigger.The utility model, precision reaches 0.1mS, and is influenced from extraneous factor；Wiring during production test simultaneously also greatly simplifies, and improves production efficiency.
Description
Technical field
The utility model is related to lithium ion battery protecting plate Function detection technical fields, are specifically a kind of lithium battery protection board
It overcharges with crossing the detecting system put.
Background technology
3C numbers class handheld device, such as mobile phone at present, tablet computer, bracelet etc. are powered using lithium ion battery.Lithium electricity
Pond advantage is that energy density is all more much higher than traditional lead-acid battery, Ni-MH battery, nickel-cadmium cell, but a disadvantage is that chemism
It is high, it is necessary to there is complete protection to be matched with monitoring mechanism, therefore it is very to install protection circuit plates on Li-ion batteries piles
It is necessary.The one of important function of protection board is exactly to detect whether battery pack has overcharging or overdischarging at any time.Vertical institute
Known, lithium battery overcharge can cause to generate heat, and burning is even exploded, abnormally dangerous；And overdischarge then can drastically shorten battery
Service life is directly damaged.Therefore protection board is overcharged could install with crossing after the defencive function put has to pass through stringent detection
Onto battery pack.
The software control that traditional li-ion cell protection board test apparatus uses in the industry at present measures overcharge current or overdischarge
Whether electric current closes to confirm protection act and guard delay time, the drawback is that the module resource used is more, and the time is accurate
Exactness is not good enough.
Utility model content
The purpose of this utility model is to provide a kind of lithium battery protection boards to overcharge with crossing the detecting system put, existing to solve
There is the problem of in technology.
To achieve the above object, the utility model provides following technical solution：A kind of lithium battery protection board is overcharged to be put with crossing
Detecting system, including first module wrapped pad and second unit wrapped pad, storage is provided in the first module wrapped pad
Chamber, the first module wrapped pad top are provided with the first card slot, and the first module wrapped pad lower part is provided with the second card slot,
It is provided with containing cavities in the second unit wrapped pad, the second unit wrapped pad top is provided with the first protrusion, and described the
Two unit packages pad lower part is provided with the second protrusion, and the first module wrapped pad is connected with second unit wrapped pad.
Preferably, the initial normal voltage of the simulated battery module is arranged to 4V.
Preferably, it is described can program mode power supply with load coenosarc module be arranged to 4.5V/50mA.
Compared with prior art, the beneficial effects of the utility model are：The utility model Cross prevention (time delay) with
Traditional test process is the same, and simply the 2nd step is changed to PS/LD and is set as loading, and carries out 50mA electric discharges, and the rising edge of the 3rd, 4 step
Become, become trailing edge change；In hardware timing, precision reaches 0.1mS, and is influenced from extraneous factor；During production test simultaneously
Wiring also greatly simplifies, and improves production efficiency.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of utility model works process.
In figure：1- simulated battery modules；2- battery incoming ends；3- charge and discharge control switch mosfets；4- battery protections
Chip；5- battery outputs；6- can program mode power supply and load coenosarc module；7- edges become trigger.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Please referring to Fig.1-2, in the utility model embodiment, a kind of lithium battery protection board is overcharged with crossing the detecting system put,
Including simulated battery module 1, battery incoming end 2, charge and discharge control switch mosfet 3, battery protection chip 4, battery output
End 5 and can program mode power supply and load coenosarc module 6, simulated battery module 1 is connected by conducting wire with battery incoming end 2, electric
Pond core incoming end 2 is connected by conducting wire with charge and discharge control switch mosfet 3 and battery protection chip 4 respectively, charge and discharge control
Switch mosfet 3 is connected by conducting wire with battery protection chip 4, and charge and discharge control switch mosfet 3 and battery protection chip 4 are equal
Be connected by conducting wire with battery output 5, battery output 5 by conducting wire with can program mode power supply with load coenosarc module 6 connect
Connect, can program mode power supply with being provided in load coenosarc module 6 along becoming trigger 7, the initial normal voltage of simulated battery module 1
Be arranged to 4V, can program mode power supply be arranged to 4.5V/50mA with load coenosarc module 6；Setting simulated battery module voltage arrived
Protection point, such as 4.35V are filled, at this time along first rising edge change triggering of trigger generation is become, hardware timing starts Tstart；Deng
After startup to be protected, electric current is closed, and at this time along second rising edge change triggering of trigger generation is become, hardware timing terminates Tend,
Whole process is referring to Fig. 2 in Figure of description；Tend-Tstart is calculated, draws protection act time delay.
The operation principle of the utility model is：1. setting simulated battery module initial normal voltage 4V during work；2. setting
Can program mode power supply carry out charging action with load coenosarc module for 4.5V/50mA；3. setting simulated battery module voltage arrived
Protection point, such as 4.35V are filled, at this time along first rising edge change triggering of trigger generation is become, hardware timing starts Tstart；4.
After startup to be protected, electric current is closed, and at this time along second rising edge change triggering of trigger generation is become, hardware timing terminates
Tend, whole process is referring to Fig. 2 in Figure of description；5. calculating Tend-Tstart, protection act time delay is drawn.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that will fall containing in the equivalent requirements of the claims
All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (3)
1. a kind of lithium battery protection board is overcharged with crossing the detecting system put, including simulated battery module (1), battery incoming end
(2), charge and discharge control switch mosfet (3), battery protection chip (4), battery output (5) and can program mode power supply with load
Coenosarc module (6), it is characterised in that：The simulated battery module (1) is connected by conducting wire with battery incoming end (2), described
Battery incoming end (2) is connected by conducting wire with charge and discharge control switch mosfet (3) and battery protection chip (4) respectively, institute
It states charge and discharge control switch mosfet (3) to be connected with battery protection chip (4) by conducting wire, the charge and discharge control MOSFET is opened
It closes (3) and battery protection chip (4) is connected by conducting wire with battery output (5), the battery output (5) passes through conducting wire
With can program mode power supply be connected with load coenosarc module (6), it is described can program mode power supply be provided with loading on coenosarc module (6)
Along change trigger (7).
2. a kind of lithium battery protection board according to claim 1 is overcharged with crossing the detecting system put, it is characterised in that：It is described
The initial normal voltage of simulated battery module (1) is arranged to 4V.
3. a kind of lithium battery protection board according to claim 1 is overcharged with crossing the detecting system put, it is characterised in that：It is described
Can program mode power supply with load coenosarc module (6) be arranged to 4.5V/50mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375685.3U CN207440270U (en) | 2017-10-24 | 2017-10-24 | A kind of lithium battery protection board is overcharged with crossing the detecting system put |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375685.3U CN207440270U (en) | 2017-10-24 | 2017-10-24 | A kind of lithium battery protection board is overcharged with crossing the detecting system put |
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| CN207440270U true CN207440270U (en) | 2018-06-01 |
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| CN201721375685.3U Active CN207440270U (en) | 2017-10-24 | 2017-10-24 | A kind of lithium battery protection board is overcharged with crossing the detecting system put |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843854A (en) * | 2017-12-14 | 2018-03-27 | 昆山通达测科电子科技有限公司 | A kind of lithium battery overcharges, Cross prevention and the method for testing of time delay |
| CN109239582A (en) * | 2018-10-19 | 2019-01-18 | 上海芯哲微电子科技股份有限公司 | A kind of test device of Charge Management integrated circuit |
-
2017
- 2017-10-24 CN CN201721375685.3U patent/CN207440270U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843854A (en) * | 2017-12-14 | 2018-03-27 | 昆山通达测科电子科技有限公司 | A kind of lithium battery overcharges, Cross prevention and the method for testing of time delay |
| CN109239582A (en) * | 2018-10-19 | 2019-01-18 | 上海芯哲微电子科技股份有限公司 | A kind of test device of Charge Management integrated circuit |
| CN109239582B (en) * | 2018-10-19 | 2023-12-15 | 上海芯哲微电子科技股份有限公司 | Testing device for charging management integrated circuit |
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