CN201946969U - Protection circuit for battery explosion resistance - Google Patents

Protection circuit for battery explosion resistance Download PDF

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Publication number
CN201946969U
CN201946969U CN2011200032362U CN201120003236U CN201946969U CN 201946969 U CN201946969 U CN 201946969U CN 2011200032362 U CN2011200032362 U CN 2011200032362U CN 201120003236 U CN201120003236 U CN 201120003236U CN 201946969 U CN201946969 U CN 201946969U
Authority
CN
China
Prior art keywords
battery
explosion
thermistor
circuit
utility
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
Application number
CN2011200032362U
Other languages
Chinese (zh)
Inventor
蔡镇滨
马平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN CHINAKING MOBILE TECHNOLOGY Ltd
Original Assignee
SHENZHEN CHINAKING MOBILE TECHNOLOGY Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHENZHEN CHINAKING MOBILE TECHNOLOGY Ltd filed Critical SHENZHEN CHINAKING MOBILE TECHNOLOGY Ltd
Priority to CN2011200032362U priority Critical patent/CN201946969U/en
Application granted granted Critical
Publication of CN201946969U publication Critical patent/CN201946969U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model is a protection circuit for battery explosion resistance, which is arranged outside the battery and is connected with the positive pole of the battery. Protection current is added to the positive pole so that damages to the battery are effectively avoided and accordingly, battery explosion is avoided.

Description

The protective circuit that is used for battery anti-explosion
Technical field
The utility model relates to the protective circuit of battery, says so exactly to be used for the circuit of outside batteries protection.
Background technology
In the use of battery, can run into the blast that two kinds of situations cause battery usually, the one, inside battery flatulence causes battery explosion; The 2nd, the outside big electric current of battery causes battery short circuit, causes battery explosion.
In second kind of situation, external short circuit causes big electric current often, and the electric current of moment can reach the 50-100 millisecond, and the internal temperature of battery is raise suddenly, and electrode decomposes, thereby causes battery explosion.
At present, people only notice battery explosion or the caused blast of inside battery flatulence that internal short-circuit of battery causes, the explosion phenomenon that the big electric current that produces to external short-circuit of battery of not looking like causes.
Summary of the invention
Based on this, the purpose of this utility model provides a kind of protective circuit that is used for battery anti-explosion, and this circuit can be protected battery effectively, avoids the injury of the big electric current of outside batteries to battery.
Another purpose of the present utility model is to provide a kind of protective circuit that is used for battery anti-explosion, and this circuit structure is simple, be easy to realize.
In order to achieve the above object, the utility model is achieved in that
A kind of protective circuit that is used for battery anti-explosion, this circuit is arranged at outside batteries, is connected on the positive pole of battery.No matter in charging process; still in the process of the external output current of battery; all be the input and output of carrying out electric current by positive pole; and the positive pole also that burnt of big electric current; therefore; positive pole to battery adds protective current, can prevent the destruction to battery effectively, avoids the blast of battery.
Described protective circuit is thermistor, and thermistor is when running into big electric current, and resistance can be infinitely great, thereby the positive pole of battery is formed protection, and in the time of normal current, the resistance of thermistor is almost nil, can not hinder the operate as normal and the charging of battery simultaneously.
Described thermistor is the PTC thermistor.
Described thermistor, a high-power resistance in parallel is protected so that thermistor is formed usually, and described high-power resistance, and its resistance value is generally more than the 5M Ω.
The utility model adopts foregoing circuit, can protect battery effectively, avoids the destruction of the big electric current of outside batteries to battery, can prevent battery effectively because the blast that outside big electric current causes.
Description of drawings
The structural representation that Fig. 1 implements for the utility model.
Embodiment
Below, in conjunction with the accompanying drawings shown in, concrete enforcement of the present utility model is elaborated.
Shown in Figure 1; structural representation for the utility model enforcement; shown in the figure; battery 3 has battery parent 1 and 2 two parts of battery protecting circuit usually; these two partly integrated in battery; be provided with thermistor 5 between battery 3 and power consumption equipment 4, thermistor 5 is as the high current protection circuit to battery 3.
By thermistor 5, big electric current can constitute impact to battery to external electric equipment 5 short circuits the time, at this moment, thermistor 5 is along with big electric current, can become infinitely-great resistance, big electric current is formed infinitely-great hypotensive effect, avoid the destruction of big electric current, thereby played the battery anti-explosion effect battery.
The above; it only is a kind of specific implementation of the present utility model; do not represent and realize all implementations of the present utility model; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model; and do not break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the protection range of the present utility model.

Claims (1)

1. a protective circuit that is used for battery anti-explosion is characterized in that this circuit is arranged at outside batteries, is connected on the positive pole of battery.
2.The protective circuit that is used for battery anti-explosion as claimed in claim 1 is characterized in that described protective circuit, is thermistor.
3.The protective circuit that is used for battery anti-explosion as claimed in claim 2 is characterized in that described thermistor, is the PTC thermistor.
4.The protective circuit that is used for battery anti-explosion as claimed in claim 2 is characterized in that described thermistor, a high-power resistance in parallel, and described high-power resistance, and its resistance value is more than the 5M Ω.
CN2011200032362U 2011-01-07 2011-01-07 Protection circuit for battery explosion resistance Expired - Fee Related CN201946969U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200032362U CN201946969U (en) 2011-01-07 2011-01-07 Protection circuit for battery explosion resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200032362U CN201946969U (en) 2011-01-07 2011-01-07 Protection circuit for battery explosion resistance

Publications (1)

Publication Number Publication Date
CN201946969U true CN201946969U (en) 2011-08-24

Family

ID=44474305

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200032362U Expired - Fee Related CN201946969U (en) 2011-01-07 2011-01-07 Protection circuit for battery explosion resistance

Country Status (1)

Country Link
CN (1) CN201946969U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108233480A (en) * 2018-02-06 2018-06-29 北京拓盛智联技术有限公司 A kind of anti-explosion battery and the isolation protective circuit for anti-explosion battery
CN110793660A (en) * 2019-11-08 2020-02-14 锐迪科微电子(上海)有限公司 Battery temperature detection circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108233480A (en) * 2018-02-06 2018-06-29 北京拓盛智联技术有限公司 A kind of anti-explosion battery and the isolation protective circuit for anti-explosion battery
CN108233480B (en) * 2018-02-06 2023-09-12 北京拓盛智联技术有限公司 Explosion-proof battery and isolation protection circuit for explosion-proof battery
CN110793660A (en) * 2019-11-08 2020-02-14 锐迪科微电子(上海)有限公司 Battery temperature detection circuit

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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: 20110824

Termination date: 20130107

CF01 Termination of patent right due to non-payment of annual fee