CN201069797Y - 9V lithium ion battery - Google Patents
9V lithium ion battery Download PDFInfo
- Publication number
- CN201069797Y CN201069797Y CNU2007200533482U CN200720053348U CN201069797Y CN 201069797 Y CN201069797 Y CN 201069797Y CN U2007200533482 U CNU2007200533482 U CN U2007200533482U CN 200720053348 U CN200720053348 U CN 200720053348U CN 201069797 Y CN201069797 Y CN 201069797Y
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- China
- Prior art keywords
- battery
- integrated circuit
- protection
- lithium ion
- ion battery
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model is related to a 9 V lithium-ion battery, belonging to the battery field. The utility model comprises three 3V chargeable secondary lithium batteries connected in series; wherein, one battery is provided with a protection circuit; Vcc of an integrated circuit T1 is connected with the battery positive electrode through a resistor R1 and Vss is connected with the battery negative electrode; the charging and discharging output ends of the T1 integrated circuit are connected with the control end of a T2 switch transistor. The T2 switch transistor MOSFET has two independent A transistor and B transistor therein, which are actually connected in series, which respectively carry out the switching functions for charging and discharging. The utility model has the advantages of reasonable design, easy protection circuit and lower cost, realizing the protection to the whole battery pack.
Description
Technical field
A kind of 9V lithium ion battery of the utility model belongs to field of batteries, particularly relates to the compound mode and the protective circuit of battery.
Background technology
The 9V battery is applicable to Medical Devices, wireless microphone, digital calculation balance, security alarm device etc. usually.The once alkaline 9V battery of business-like at present 9V battery, ni-mh 9V battery and lithium ion 9V battery lithium ion battery are as a kind of emerging energy, different with general common acid battery, characteristics such as high voltage, high-energy-density are arranged, having extended cycle life, self-discharge rate is low are more suitable for the 9V electrical appliance and use.For the 9V lithium ion battery, conventional lithium ion battery (adopt cobalt acid lithium be positive electrode) adopts single battery to protect respectively when combination, complex process not only, and also cost is higher.Consider the overcharging resisting that ferric phosphate lithium cell is good, anti-mistake is put performance, does not need every battery protection when combination.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of simple and easy, inexpensive protective circuit is provided, and whole battery group is realized protection, adopts the protected mode of single battery to realize putting in order the protection of Battery pack.
The purpose of this utility model reaches by following measure; battery is a cascaded structure in the charge and discharge use; utilization fills, the identical equilibrium principle of the identical corresponding battery charge and discharge capacity of electric current when putting, thus only to a batteries overcharge, over just can realize the protection to integral battery door.A kind of 9V lithium ion battery is can fill the serondary lithium battery series connection by three joint 3V, and three joint 3V batteries are composed in series the 9V chargeable battery.On a batteries protective circuit is set, the operation principle of protective circuit is made up of li-ion cell protection integrated circuit T1 and T2 switch MOS FET among the present invention.The Vcc of integrated circuit T1 connects anode by resistance R 1, Vss connects battery cathode, battery terminal voltage is monitored constantly, and Dout and Cout are respectively the charge and discharge output of T1 integrated circuit, are connected to T2 control end of switching tube (the G utmost point of MOSFET).T2 switch MOS FET inner actual have two independently pipe A and B be connected in series, carry out the charge and discharge switching function respectively.Dout and Cout are output as high level and control two switch MOS FET of T2 respectively and make it be in conducting state in normal charge and discharge process.
If the Vcc of T1 and Vss two ends are detected cell voltage and are reached to set and trigger the A pipe charge switch MOSFET that additives for overcharge protection Cout is output as among the low level control T2 when overcharging and turn-off in charging process; thereby stop charging, the protection battery can be because of the damage battery that overcharges.If the Vcc of T1 and Vss two ends are detected cell voltage and are lower than to set and trigger over Dout when putting and be output as low level and control B tube discharge switch MOS FET shutoff among the T2 in discharge process; thereby stop discharge, the protection battery can not damage battery because of overdischarge.
Detect cell voltage for just often when T1 protects integrated circuit Vcc and Vss two ends, the T2 power MOSFET is opened.The normally charge and discharge use of battery this moment.When charger charges to battery, cause battery to damage for preventing battery overcharge, need to stop charged state.Detect cell voltage when T1 protection integrated circuit takes, detect cell voltage when T1 integrated circuit Vcc and Vss two ends and reach to set when overcharging and trigger additives for overcharge protection, the A tube power MOSFET among the T2 is turn-offed, thereby stop to charge.Under the situation of over-discharge can, also can cause the damage of battery.Battery connects that cell voltage can constantly descend after the load, and protection integrated circuit T1 can trigger B tube power MOSFET among the T2 and turn-offs to end and discharge when T1 integrated circuit Vcc and Vss two ends are detected lithium battery and forced down in its overdischarge voltage detecting point.Thereby avoid battery over-discharge can phenomenon to take place, realize protection battery.During overvoltage protection, D1 is a voltage stabilizing didoe, and its effect is for preventing that the too high damage battery control circuit of common Ni-MH battery charger voltage from clamping pressure-controlled, protects this battery when this battery being placed on the charging of common Ni-MH battery charger.
Be connected with the protection circuit plate between the both positive and negative polarity of battery, the bottom design of housing becomes circular-arc, can make dischargeable capacity increase in the shell on the one hand, can hold size macrocell slightly, increases the 9V capacity of lithium ion battery; Can play the support fixation effect to the horizontal positioned battery on the other hand.Battery is can fill the serondary lithium battery series connection by three joint 3V, and three joint 3V batteries are composed in series the 9V chargeable battery.On a batteries, protective circuit is set, the protection of a batteries is realized protection to three batteries.
T1 can be all similar single-unit li-ion cell protection integrated circuits.T2 can be all similar MOSFET field effect transistor.
The utility model is reasonable in design, and protective circuit is simple and easy, inexpensive, and whole battery group is realized protection.
Description of drawings
Accompanying drawing 1 is a circuit diagram of the present utility model.
Accompanying drawing 2 is structural representations of the present utility model.
Accompanying drawing 3 is A-A schematic cross-sections of accompanying drawing 2.
Accompanying drawing 4 is battery container structural representations of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1; the utility model battery protecting circuit is made up of integrated circuit and switch MOS FET; the Vcc of integrated circuit T1 connects anode by resistance R 1; Vss connects battery cathode; battery terminal voltage is monitored constantly; Dout and Cout are respectively the charge and discharge output of T1 integrated circuit, are connected to T2 control end of switching tube (the G utmost point of MOSFET).T2 switch MOS FET inner actual have two independently A and B pipe be connected in series, carry out the charge and discharge switching function respectively.Dout and Cout are output as high level and control two switch MOS FET of T2 respectively and make it be in conducting state in normal charge and discharge process.If the Vcc of T1 and Vss two ends are detected cell voltage and are reached to set and trigger the A pipe charge switch MOSFET that additives for overcharge protection Cout is output as among the low level control T2 when overcharging and turn-off in charging process; thereby stop charging, the protection battery can be because of the damage battery that overcharges.If the Vcc of T1 and Vss two ends are detected cell voltage and are lower than to set and trigger over Dout when putting and be output as low level and control B tube discharge switch MOS FET shutoff among the T2 in discharge process; thereby stop discharge, the protection battery can not damage battery because of overdischarge.
BATTER1 in the accompanying drawing 1, BATTER2, BATTER3 are respectively three 3V can fill serondary lithium battery, and three 3V batteries are composed in series the 9V chargeable battery.T1 only monitors BATTER1 in the above-mentioned protective circuit.T2 is the master switch of whole battery group.Trigger the T2 conducting when T1 monitors battery under normal condition, battery can normally use.When battery charge,, T1 make whole Battery pack stop charging when monitoring the A charging MOSFET that can in time close when battery overcharges among the T2.When battery discharge, the B discharge MOSFET that can in time close when T1 monitors battery generation overdischarge among the T2 makes whole Battery pack stop discharge.Thereby the whole Battery pack of protection is not damaged.
Shown in accompanying drawing 2, accompanying drawing 3; the utility model 9V lithium ion battery is made up of housing and three batteries; housing is provided with positive and negative terminal; three batteries lie in a horizontal plane in the housing; three batteries are connected in series; the both positive and negative polarity brace of series-connected cell is connected with positive and negative terminal on the housing again, is connected with the protection circuit plate of protective circuit between the both positive and negative polarity of a batteries, realizes protection to three batteries by the protection to a batteries.Bottom in the housing and battery contact site are designed to circular-arc, and the diameter of circular arc is according to the model design of holding battery.
As shown in Figure 4.The bottom design of the utility model housing becomes circular-arc, can make dischargeable capacity increase in the shell on the one hand, can hold size macrocell slightly, can play the support fixation effect to the horizontal positioned battery on the other hand.
Claims (3)
1. a 9V lithium ion battery can fill the serondary lithium battery series connection by three 3V, it is characterized in that on a batteries protective circuit being set.
2. a kind of 9V lithium ion battery according to claim 1; it is characterized in that protective circuit is made up of battery protection integrated circuit and switch MOS FET; the Vcc of integrated circuit T1 connects anode by resistance R 1; Vss connects battery cathode; the charge and discharge output of T1 integrated circuit; be connected to the T2 control end of switching tube, the T2 switch is carried out the charge and discharge switch respectively.
3. a kind of 9V lithium ion battery according to claim 1, it is characterized in that three batteries lie in a horizontal plane in the housing, the both positive and negative polarity brace of series-connected cell is connected with positive and negative terminal on the housing again, and bottom and battery contact site in the housing are designed to circular-arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200533482U CN201069797Y (en) | 2007-06-22 | 2007-06-22 | 9V lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200533482U CN201069797Y (en) | 2007-06-22 | 2007-06-22 | 9V lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069797Y true CN201069797Y (en) | 2008-06-04 |
Family
ID=39491186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200533482U Expired - Lifetime CN201069797Y (en) | 2007-06-22 | 2007-06-22 | 9V lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069797Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074934A (en) * | 2010-12-31 | 2011-05-25 | 东莞博力威电池有限公司 | Lithium ion battery with long service life |
| CN105048606A (en) * | 2015-09-16 | 2015-11-11 | 上海德朗能动力电池有限公司 | Battery discharge protection circuit and rechargeable battery pack with discharge protection function |
-
2007
- 2007-06-22 CN CNU2007200533482U patent/CN201069797Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074934A (en) * | 2010-12-31 | 2011-05-25 | 东莞博力威电池有限公司 | Lithium ion battery with long service life |
| CN105048606A (en) * | 2015-09-16 | 2015-11-11 | 上海德朗能动力电池有限公司 | Battery discharge protection circuit and rechargeable battery pack with discharge protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU GREAT POWER ENERGY + TECHNOLOGY CO., LTD Free format text: FORMER NAME: PENGHUI BATTERY CO., LTD., GUANGZHOU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Sand village Panyu District Shawan Town, Guangzhou City, Guangdong province 511483 bunker first industrial zone Guangzhou Penghui Battery Co. Ltd. Patentee after: Guangzhou Great Power Energy & Technology Co., Ltd. Address before: Sand village Panyu District Shawan Town, Guangzhou City, Guangdong province 511483 bunker first industrial zone Guangzhou Penghui Battery Co. Ltd. Patentee before: Penghui Battery Co., Ltd., Guangzhou |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 511483 Guangzhou City, Panyu District Shawan Town Liang Road (West Village section of No. 912) Patentee after: Guangzhou Great Power Energy & Technology Co., Ltd. Address before: Sand village Panyu District Shawan Town, Guangzhou City, Guangdong province 511483 bunker first industrial zone Guangzhou Penghui Battery Co. Ltd. Patentee before: Guangzhou Great Power Energy & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |
|
| CX01 | Expiry of patent term |