CN202218040U - Charging protector for battery - Google Patents
Charging protector for battery Download PDFInfo
- Publication number
- CN202218040U CN202218040U CN2011203260854U CN201120326085U CN202218040U CN 202218040 U CN202218040 U CN 202218040U CN 2011203260854 U CN2011203260854 U CN 2011203260854U CN 201120326085 U CN201120326085 U CN 201120326085U CN 202218040 U CN202218040 U CN 202218040U
- Authority
- CN
- China
- Prior art keywords
- charging
- rechargeable battery
- chr
- battery
- chip
- 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 - Lifetime
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a protection circuit, in particular to a charging protector for a battery. The protector is characterized by at least comprising a charging battery, a chip S-8261AAGMD, a password card power supply anode DISC+, a password card power supply cathode DISC-, and an anode CHR+, a cathode CHR- and a control end B for charging the battery, wherein an MOSFET (metal-oxide-semiconductor field effect transistor) tube Q1 is connected between the anode CHR+ for charging the battery and the password card power supply anode DISC+ in series, a control end of the MOSFET tube Q1 is electrically connected with the control end B for charging the battery so as to charge the anode end for charging the battery, the cathode CHR- for charging the battery is electrically connected with the cathode of the charging battery by an in-series MOSFET composite tube Q3, and two control ends of the MOSFET composite tube Q3 are respectively and electrically connected with a first pin DO and a third pin CO of the chip S-8261AAGMD. The charging protector is simple in circuit and good in reliability.
Description
Technical field
The utility model relates to a kind of protective circuit, particularly is a kind of charge protection device of battery.
Background technology
In the Fare Collection System of highway; Pass cost has reasonable fee and the fractionation science in order to embody; Need to abolish the method for traditional shortest path charge; Propose now to utilize with car radio-frequency card and the trackside electronic route sign registration of vehicle accurate path of going, collect pass cost according to the actual travel path and also split.
Because current letter card adopts the rechargeable battery power supply, battery is encapsulated in the visa card housing, therefore to battery charge the time, promptly wants and can charge, and protects battery again.
Summary of the invention
The purpose of the utility model provides that a kind of circuit is simple, the charge protection device of a kind of battery of good reliability.
The purpose of the utility model is to realize like this; A kind of charge protection device of battery; It is characterized in that: which comprises at least: rechargeable battery, chip S-8261AAGMD; Visa card positive source DISC+ and visa card power cathode DISC-to anodal CHR+, negative pole CHR-and the control end B of rechargeable battery charging, are serially connected with MOSFET pipe Q1 between the anodal CHR+ of rechargeable battery charging and visa card positive source DISC+; The control end of MOSFET pipe Q1 is electrically connected with the control end B of rechargeable battery charging; To the positive terminal charging of rechargeable battery charging, the negative pole CHR-of rechargeable battery charging is connected with the rechargeable battery negative electricity through the MOSFET multiple tube Q3 of serial connection, and two control ends of MOSFET multiple tube Q3 are electrically connected with 1 pin DO and the 3 pin CO of chip S-8261AAGMD respectively.
Connect capacitor C 1 between the 5 pin VDD of said chip S-8261AAGMD and the 6 pin VSS.
The 6 pin VSS of said chip S-8261AAGMD connect GND; The 5 pin VDD of chip S-8261AAGMD are electrically connected with the anodal CHR+ that charges to rechargeable battery through resistance R 1, and the 2 pin DM of chip S-8261AAGMD are electrically connected through the negative pole CHR-of resistance R 2 with the rechargeable battery charging.
The voltage of described rechargeable battery is 3-3.6V.
The anodal CHR+ and the charge circuit of described rechargeable battery charging have protective tube PTC.
The utility model has the advantages that: because chip S-8261AAGMD is serially connected with MOSFET pipe Q1 through control between the anodal CHR+ of rechargeable battery charging and visa card positive source DISC+; And MOSFET multiple tube Q3; Communication card is broken off when charging; And after charging finishes, power up, can effectively protect visa card.In addition, chip N1 monitors the charged state of battery at any time in when charging, reaches predetermined value and just can 1 and 3 ends be put low level in case detect cell voltage, and compound MOSFET is protected battery by with battery and charger disconnection.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described further:
Fig. 1 is the utility model embodiment circuit theory diagrams.
Embodiment
As shown in Figure 1; A kind of charge protection device of battery; Which comprises at least: rechargeable battery CELL, chip S-8261AAGMD; Communication card power positive end DISC+ and communication card power supply negative terminal DISC-to anode CHR+, negative terminal CHR-and the control end B of rechargeable battery charging, are serially connected with MOSFET pipe Q1 between the anode CHR+ of rechargeable battery charging and communication card power positive end DISC+; The control end of MOSFET pipe Q1 is electrically connected with the control end B of negative sense rechargeable battery charging; Anode CHR+ to the rechargeable battery charging is connected with the rechargeable battery positive electrical through protective tube PTC, is connected with the rechargeable battery negative electricity through serial connection MOSFET multiple tube Q3 to the negative terminal CHR-of rechargeable battery charging, and two control ends of MOSFET multiple tube Q3 are electrically connected with 1 pin DO and the 3 pin CO of chip S-8261AAGMD respectively; Connect capacitor C 1 between the 5 pin VDD of chip S-8261AAGMD and the 6 pin VSS; The 6 pin VSS of chip S-8261AAGMD connect GND, and the 5 pin VDD of chip S-8261AAGMD are electrically connected with the anode CHR+ that charges to rechargeable battery through resistance R 1, and the 2 pin DM of chip S-8261AAGMD are electrically connected with the negative terminal CHR-that charges to rechargeable battery through resistance R 2.The voltage of rechargeable battery is 3-3.6V, and the anodal CHR+ and the charge circuit of electric battery charge have protective tube PTC.
During charging, charger is put high level with the B end, and Q1 ends, and battery and load circuit are broken off.And chip N1 puts high level with 1 and 3 ends, compound MOSFET pipe Q3 conducting, and for battery provides the charging path, battery begins charging.When just being battery charge, visa card (breaking off) down circuitry with battery.In addition, chip N1 monitors the charged state of battery at any time in when charging, reaches predetermined value and just can 1 and 3 ends be put low level in case detect cell voltage, and compound MOSFET is protected battery by with battery and charger disconnection.Other management function is please referred to the PDF data of chip N1 in the charging process, as when charging at first to battery discharge, secondly pulse current charge, last constant current charge etc.
Claims (5)
1. the charge protection device of a battery; It is characterized in that: which comprises at least: rechargeable battery, chip S-8261AAGMD; Visa card positive source DISC+ and visa card power cathode DISC-; Anodal CHR+, negative pole CHR-and control end B to the rechargeable battery charging; Between the anodal CHR+ of rechargeable battery charging and visa card positive source DISC+, be serially connected with MOSFET pipe Q1, the control end of MOSFET pipe Q1 is electrically connected with the control end B of rechargeable battery charging, and the positive terminal that charges to rechargeable battery charges; The negative pole CHR-of rechargeable battery charging is connected with the rechargeable battery negative electricity through the MOSFET multiple tube Q3 of serial connection, and two control ends of MOSFET multiple tube Q3 are electrically connected with 1 pin DO and the 3 pin CO of chip S-8261AAGMD respectively.
2. the charge protection device of a kind of battery according to claim 1 is characterized in that: connect capacitor C 1 between the 5 pin VDD of said chip S-8261AAGMD and the 6 pin VSS.
3. the charge protection device of a kind of battery according to claim 1; It is characterized in that: the 6 pin VSS of said chip S-8261AAGMD connect GND; The 5 pin VDD of chip S-8261AAGMD are electrically connected with the anodal CHR+ that charges to rechargeable battery through resistance R 1, and the 2 pin DM of chip S-8261AAGMD are electrically connected through the negative pole CHR-of resistance R 2 with the rechargeable battery charging.
4. the charge protection device of a kind of battery according to claim 1, it is characterized in that: the voltage of described rechargeable battery is 3-3.6V.
5. the charge protection device of a kind of battery according to claim 1 is characterized in that: the anodal CHR+ and the charge circuit of described rechargeable battery charging have protective tube PTC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203260854U CN202218040U (en) | 2011-09-01 | 2011-09-01 | Charging protector for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203260854U CN202218040U (en) | 2011-09-01 | 2011-09-01 | Charging protector for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218040U true CN202218040U (en) | 2012-05-09 |
Family
ID=46017267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203260854U Expired - Lifetime CN202218040U (en) | 2011-09-01 | 2011-09-01 | Charging protector for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202218040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315626A (en) * | 2011-09-01 | 2012-01-11 | 河南省交通科学技术研究院有限公司 | Charging protection circuit of battery |
-
2011
- 2011-09-01 CN CN2011203260854U patent/CN202218040U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315626A (en) * | 2011-09-01 | 2012-01-11 | 河南省交通科学技术研究院有限公司 | Charging protection circuit of battery |
| CN102315626B (en) * | 2011-09-01 | 2014-09-17 | 河南省交通科学技术研究院有限公司 | Charging protection circuit of battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |