CN2745262Y - Protector for notebook computer battery charging/discharging control circuit - Google Patents
Protector for notebook computer battery charging/discharging control circuit Download PDFInfo
- Publication number
- CN2745262Y CN2745262Y CN 200420009293 CN200420009293U CN2745262Y CN 2745262 Y CN2745262 Y CN 2745262Y CN 200420009293 CN200420009293 CN 200420009293 CN 200420009293 U CN200420009293 U CN 200420009293U CN 2745262 Y CN2745262 Y CN 2745262Y
- Authority
- CN
- China
- Prior art keywords
- battery
- control circuit
- notebook computer
- charging
- circuit
- 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
Links
Images
Landscapes
- Power Sources (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a protector for a notebook computer battery charging/discharging control circuit. The charging/discharging control circuit comprises a body control circuit used for setting the charging/discharging current voltage and reading the battery parameter, and a safety protective circuit of battery encapsulation which is used for security protection. A switch used for switching the circuit is arranged between the charging/discharging current supply pin of a control interface and a clock signal pin. A switch key of the battery is added to the utility model, and the used loop of the battery can be conveniently quickly cut without removing the battery; the function and design is more humanized and the problem of repeatedly charging and discharging is effectively solved.
Description
Technical field
The utility model relates to a kind of protective device of cells in notebook computer charge-discharge control circuit.
Background technology
Generally be provided with rechargeable battery in the notebook computer, this rechargeable battery generally is the preferable lithium ion battery of performance.To discharge and recharge number of times relevant because useful life of lithium ion battery is with it, effectively controls the useful life that its access times can prolong battery.It is adapter power supply and powered battery that notebook computer has two kinds of supply power modes, in use both mutual situations about using occur through regular meeting, many times do not put electricity fully and just begun charging at battery, but this also to calculate be once to charge.Use the people regular meeting of notebook computer carefulness to pull out battery; reduce the access times of battery; because cells in notebook computer generally makes a part built-in or the notebook computer structure, pulling out battery all has certain influence to the attractive in appearance and convenience of computer, and; if accidentally; serious physical damnification will be arranged, even cause damaging fully, for the battery of laying down; to be very much trouble also additionally to its keeping.And following situation in use also often appears in cells in notebook computer: the battery electricity does not use and need use adapter; When not using battery owing to exist self discharge and circuit electric leakage (200uA is following) electric weight also can reduce.This is very unfavorable to rechargeable battery equally, influences its useful life.
As shown in Figure 1; be the charge-discharge control circuit schematic diagram in the notebook computer main body; whole notebook computer charge-discharge control circuit part is made up of two parts; it is the safety protection loop in main body control part loop and the cell package; body interior loop major function is set for charging and discharging currents voltage and is read battery parameter, and electric core combination and safety protective circuit part are arranged in the encapsulation of battery.Four signal pins that connect battery on the main body be charging and discharging currents supply with pin+, battery temperature reads pin T, read the clock signal SMC and the data-signal pin SMD of battery parameter and state.Plug adapter after battery electric quantity is lower than certain value, this moment, Q1 closed, and EC sends the ENCHG signal control chip MB3887 that charges the battery, and 3887 provide the OUT signal, open Q2, and at this moment the electric current that is come by adapter charges the battery by Q2.The electric current process Q1 that is produced by battery during powered battery is in the main body loop, this moment, Q2 was in off-state, produce ECVCC by MAX1632 again, EC starts working, SMbus_clock that what of battery electric quantity are sent by EC and SMbus_data read the parameter among the battery EEPROM, the normal two big mechanism of using of battery are the collection of charging and discharging circuit and parameter, can realize battery operated control by controlling these two key elements.
But the charge-discharge control circuit of existing notebook computer is not taked measure that rechargeable battery is effectively protected, and this has had a strong impact on the useful life of rechargeable battery.
The utility model content
At the existing problem and shortage of above-mentioned existing cells in notebook computer charge-discharge control circuit, the purpose of this utility model provides a kind of can closing the notebook computer rechargeable battery in real time as required makes battery be in the protective device of the cells in notebook computer charge-discharge control circuit of electroless state.
The utility model is achieved in that a kind of protective device of cells in notebook computer charge-discharge control circuit; this charge-discharge control circuit comprises the main body control circuit and the safety protective circuit that is used for the cell package of safeguard protection that is used for the setting of charging and discharging currents voltage and reads battery parameter; it is characterized in that, supply with the switch that is provided for the circuit folding between pin and the clock signal pin at the charging and discharging currents of control interface.
Further, also be serially connected with the electric capacity that is used to avoid making circuit and components and parts damage thereof on the described switching circuit owing to current break.
Further, the button of described switch is located at the easy-operating position of described notebook computer.
The utility model is provided with switch by supplying with between pin and the clock signal pin at the charging and discharging currents of control interface, and the button of this switch is located at the position that notebook computer is easy to user operation, like this, do not use under the rechargeable battery situation at notebook computer and at any time it to be closed, testing circuit also detects less than the battery electric quantity situation, can think that it is in electroless state.Like this, can avoid filling notebook computer rechargeable battery repeated charge, guarantee the life-span of notebook computer rechargeable battery, rechargeable battery has adequately protected.The utility model has increased the on ﹠ off switch of battery, can cut off the loop that battery uses quickly and easily, need not to pull out battery, and this function and design have more hommization, also can efficiently solve the problem of repeated charge.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is made detailed description.
Fig. 1 is existing notebook computer charge-discharge circuit structural representation;
Fig. 2 is a structural representation of the present utility model.
Embodiment
As shown in Figure 2, the utility model is the improvement on Fig. 1 basis.The analysis of the principle by circuit among Fig. 1 can be known, in order to control discharging and recharging of battery, switching device can be set on circuit, the utility model is by increase (the empty frame line part among the figure) that on ﹠ off switch is realized on the holding wire of "+" and " SMC ", like this, just cut off "+" signal and promptly cut off the charging and discharging currents of battery, action that battery stops to discharge and recharge; Cutting off SMC is that system can't provide clock signal again, the state of battery can't be detected, system can be defaulted as the state of no battery like this, the user can confirm whether current battery is available state by the information of checking system, avoids occurring pulling out the situation generation of the unexpected power down of power supply adaptor.The utility model improves the reliability of battery except increasing the electric capacity that increases a 0.1uF on the external switching circuit of switch, its objective is the damage of avoiding making owing to current break electric components in main body or the battery.
Scheme of the present utility model is simple, need not big change on the circuit, only need increase an on ﹠ off switch in the design of notebook main body mechanism, and this on ﹠ off switch can be located at any possible position that is beneficial to user's operation on the notebook main body.
The utility model promptly is the use that the design on ﹠ off switch is controlled battery with pressure on the main body of notebook computer, along with popularizing of notebook computer, requirement to computer battery service time also can be more and more higher, and the human oriented design scheme of this extending battery life will be a development trend in the future.
Claims (3)
1, a kind of protective device of cells in notebook computer charge-discharge control circuit; this charge-discharge control circuit comprises the main body control circuit and the safety protective circuit that is used for the cell package of safeguard protection that is used for the setting of charging and discharging currents voltage and reads battery parameter; it is characterized in that, supply with the switch that is provided for the circuit folding between pin and the clock signal pin at the charging and discharging currents of control interface.
2, the protective device of cells in notebook computer charge-discharge control circuit as claimed in claim 1 is characterized in that, also is serially connected with the electric capacity that is used to avoid making owing to current break circuit and components and parts damage thereof on the described switching circuit.
3, the protective device of cells in notebook computer charge-discharge control circuit as claimed in claim 1 is characterized in that, the button of described switch is located at the easy-operating position of described notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009293 CN2745262Y (en) | 2004-09-08 | 2004-09-08 | Protector for notebook computer battery charging/discharging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009293 CN2745262Y (en) | 2004-09-08 | 2004-09-08 | Protector for notebook computer battery charging/discharging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2745262Y true CN2745262Y (en) | 2005-12-07 |
Family
ID=35580037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420009293 Expired - Fee Related CN2745262Y (en) | 2004-09-08 | 2004-09-08 | Protector for notebook computer battery charging/discharging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2745262Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344044C (en) * | 2004-09-13 | 2007-10-17 | 上海北大方正科技电脑系统有限公司 | Protector for battery charge-discharge control circuit for note-book computer |
-
2004
- 2004-09-08 CN CN 200420009293 patent/CN2745262Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344044C (en) * | 2004-09-13 | 2007-10-17 | 上海北大方正科技电脑系统有限公司 | Protector for battery charge-discharge control circuit for note-book computer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201319516Y (en) | Self-adapting external battery for mobile devices | |
| CN201789318U (en) | Mobile phone power supply device with leather case battery for power supply | |
| CN101908771A (en) | Circuit for realizing fast and slow charging in linear circuits and charging control method | |
| CN109888887A (en) | A kind of Cell On-Off fulgurite reason method and system of intelligent charge cabinet | |
| CN106712174A (en) | Lithium-ion storage battery pack power supply and communication automatic switching method | |
| CN201312130Y (en) | Charger with USB communication and expansion functions | |
| CN110391685B (en) | Charging control method and device for intelligent door lock and intelligent door lock | |
| CN208571664U (en) | A kind of charge control system of built-in terminal | |
| CN107154670A (en) | A kind of double lithium battery control systems based on EC controllers | |
| CN106712167A (en) | Charging power supply protection device | |
| CN205195249U (en) | Digit BMS protection shield with data storage function | |
| CN113659685A (en) | Small-size battery management system of simulation electric automobile battery charge-discharge management | |
| CN100344044C (en) | Protector for battery charge-discharge control circuit for note-book computer | |
| CN2745262Y (en) | Protector for notebook computer battery charging/discharging control circuit | |
| CN202957657U (en) | Standby battery switching protection circuit of vehicle-mounted GPS terminal | |
| CN204425000U (en) | A kind of portable power source | |
| CN110789399A (en) | AGV vehicle lithium cell group management system | |
| CN106684478A (en) | Control method with communication instruction for controlling USB battery | |
| CN202474940U (en) | Lithium battery miner lamp charging management switch based on current direction | |
| CN201118879Y (en) | A dual battery ultra-long idle mobile phone | |
| CN202503336U (en) | High efficient automatic management module of backup battery of intelligent concentrator | |
| CN203193364U (en) | Regulated power supply powered by solar energy, stored by super capacitor and triggered by threshold voltage | |
| CN202535095U (en) | A battery management system | |
| CN2728077Y (en) | A protector for notebook computer battery charging/discharging control circuit | |
| CN201805219U (en) | Storage battery protector provided with time control function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |