CN1355586A

CN1355586A - Battery automatic detection method and device thereof

Info

Publication number: CN1355586A
Application number: CN 00134811
Authority: CN
Inventors: 李英维
Original assignee: Getac Technology Corp
Current assignee: Getac Technology Corp
Priority date: 2000-12-01
Filing date: 2000-12-01
Publication date: 2002-06-26
Anticipated expiration: 2020-12-01
Also published as: CN1174536C

Abstract

The invention relates to a method and a device for automatically detecting a battery, in particular to a method and a device for detecting the battery state and controlling the charging and discharging of the battery in a notebook computer. The method and the device can detect whether the battery functions are normal or not on the production line in real time, ensure the normal and effective operation of the battery for supplying power, and do not need to consume additional time for detecting the battery so as to improve the product quality.

Description

Battery automatic testing method and device thereof

The present invention relates to a kind of battery automatic testing method and device thereof, be meant a kind of being applied in the notebook computer especially, whether the battery of test supply power can be normally and the testing apparatus that effectively operates.

Battery is one of critical elements of all portable electronic articles for use, the quality of battery performance, often directly have influence on the convenience that electronic product uses, especially in notebook computer, this trend is obvious especially, as power supply, the function of notebook computer certainly will be had a greatly reduced quality as if the battery that does not have a reserve of electricity height to have extended cycle life.In the middle of the production process of traditional notebook computer, owing to do not design the step of detection at the function of battery, therefore often just the battery in the notebook computer being charged to its demonstration fills and just regards the step of finishing charging when full as, but this moment, whether this battery that places notebook computer was 100% the charging of finishing, or its capacitance is not enough and can not be charged to 100%, or this battery itself just has problem, can not power according to the electricity needs standard of notebook computer, these problems all belong to unknown.If battery performance has problem, then must wait until after the buyer uses and can learn, not only improve maintenance cost, and product goodwill is had great infringement.

Therefore, in order to make the manufacturer can be before product export, guarantee that the battery in the device what notebook computer can normal and effectively operate, to improve the reliability and the product quality of notebook computer battery, whether a kind of battery that can detect can be charged fully, and detect its discharge quality detection method need.

The object of the present invention is to provide discharging and recharging of a kind of battery of controlling notebook computer, in order to guarantee that before notebook computer dispatches from the factory battery can normal and effectively operate, and can improve the reliability and the product quality of notebook computer battery, solved in the past because of whether the operating state that notebook computer can't be pre-determined its battery before dispatching from the factory is stable and whether quality is good, and the problem that causes maintenance trouble and cost of serving to improve.

The object of the present invention is achieved like this:

A kind of battery automatic detection device comprises: a charge circuit in order to battery is charged, and having one on it at least can controlled internal switch; One is connected between battery and the system and device, in order to the discharge line that allows this battery that this system and device is discharged; One operating state when reading corresponding to the battery charge and discharge, and send the ROM-BIOS unit of testing result; And one in order to connect first control circuit of ROM-BIOS unit and internal switch, and the ROM-BIOS unit can be controlled the keying of this internal switch via first control circuit.

The method that a kind of battery automatically detects: comprise by a ROM-BIOS unit and read operating state corresponding to this battery operation; When this operating state is not inconsistent unification cell electrical standard, send an information warning to system and device by the ROM-BIOS unit; When this operating state meets this cell electrical standard, send a state information to system and device by the ROM-BIOS unit; When the capacitance of battery less than 100% the time, by a charging circuit battery is charged; When the capacitance of battery has reached 100%, system and device is discharged by a discharge line order battery; Read a discharge condition of corresponding this battery discharge of what by the ROM-BIOS unit: and when this discharge condition does not meet this cell electrical standard, provide system and device required electric power by a power supply unit.

Battery automatic testing method of the present invention and device thereof, can when the notebook computer original production, carry out charge-discharge test to battery, normally whether not only can detect battery functi on immediately, and need not expend the other time and carry out battery detecting, effectively guaranteed the preceding acceptance rate of product export, to improve the quality of products.

Details are as follows to the structural principle of detection method of the present invention and device thereof according to the accompanying drawing of an embodiment below:

Fig. 1: the flow chart that detects battery status.

Fig. 2: notebook computer build-in test battery status and the electric line structure principle chart of controlling battery charging and discharging.

Graphical sysmbol explanation among Fig. 2

21 system and devices

22 batteries

221 discharge lines

23 ROM-BIOS unit

231 detection lines

232 first control circuits

233 second control circuits

234 data circuits

24 diodes

25 internal switches

26 interface channels

27 mains switches

28 transformers

29 power supply units

241 discharge lines

251,271,281,291 charging wires

Fig. 1 is for detecting the flow chart of battery status among the present invention, as shown in the figure, it at first is the detection (step 101) of carrying out battery work at present state (as: output voltage values of battery, output current value, body temperature etc.), if operating state does not meet the cell electrical standard and then transmits the display unit (as: screen or indicator light) (step 103) of an information warning to system and device, for example: the Word message that shows " battery damage " in the what screen is represented that this battery damages and can't be used, finishes test (step 109) then; Otherwise, if the operating state of battery normal (electrical standard that promptly meets battery), then send out one corresponding to battery operated normal state information to display unit, for example: it is normal to represent that in the mode that gives a green light the present operating state of battery belongs in the what screen, then carries out battery charging state and detection (step 102) according to the capacitance of the battery of obtaining; If capacitance is less than 100%, and detection capacitance number of times then continues battery is charged (step 104,105), and detects capacitance (step 102) once more less than predetermined capacitance detection number of times (as: it is 2 times that capacitance detects number of times); If capacitance is still less than 100%, then repeating step 104,105, detect number of times if reached predetermined capacitance, and capacitance do not reach 100% yet, then show information warning 103 in display unit, and judge that this battery has problem, can't finish 100% charging.

Otherwise, when battery is finished 100% charging, just carry out the discharge examination program of battery at once, make battery begin power supply and give notebook computer, and just also begin this moment the state of the discharge of battery is detected (step 106,107), the project of its detection includes: the output voltage values of battery, output current value, body temperature etc.If these measured values do not meet the cell electrical standard, then send information warning immediately to display unit (step 103), represent that the discharge situation of this battery does not meet standard; If detected value meets the cell electrical standard, then judge whether to have finished preset detection cycle-index (the detection circulation of present embodiment is twice), can stop if yes detecting (step 108,109), determine that battery in this notebook computer can be normally and 100% discharge and recharge, if otherwise be back to step 102, it is no abnormal with the quality of guaranteeing battery to carry out secondary detection.

Fig. 2 is notebook computer build-in test battery status and the electric line structure principle chart of controlling battery charging and discharging.According to the trace routine that Fig. 1 disclosed, ROM-BIOS unit (hereinafter to be referred as BIOS) 23 is via the signal conduction of detection line 231, and BIOS 23 can detect battery status and capacitance.When desiring to charge, BIOS23 opens internal switch (internal switch) 25 via first control circuit 232; Simultaneously, also transmit a signal through interface channel (print port) 26, mains switch (power switch) 27 is sent unlatching (on) information via circuit 233.So between power supply unit (power supply) 29, transformer (AC adapter) 28 and battery (battery) 22, will form a charge circuit, electric current self-rechargeable circuit 291,281,271,251 flows into battery 22 through internal switch 25, carries out charging procedure; And will carry out at-once monitor by 231 pairs of batteries of detection line 22 at this same time BIOS 23, and a testing result is delivered to system and device 21 through data circuit 234, be shown in the display unit of system and device 21, for operating personnel's inspection.

And when the discharge condition that need carry out battery detected, BIOS 23 can send the control signal of closing (off) through a connection channel 26 (as: parallel interface channel) to mains switch (power switch) 27 via second control circuit, 233 transmission, one signal.At this moment, electric current flows out from battery 22, via the discharge loop that circuit 221,214 forms, and the required electric power of supply system device 21 runnings.Among the figure, the n utmost point of diode 24 is connected with this charging circuit 271, and the p utmost point and discharge line 241 join, and it act as when avoiding battery discharge, produces the adverse current phenomenon of current direction mains switch 27.

In charge and discharge process, if B10S 23 detects battery 22 abnormal states, on the one hand send information warning, then send an information on the other hand and close internal switch 25, make mains switch (power switch) 27 form open circuit to the charging circuit 271 of 22 on battery through first control circuit 232; And BIO S 23 also sends unlatching (on) information via second control circuit, 233 transmission, one signal through 26 pairs of mains switches of interface channel (power switch) 27 at the same time, come the required electric power of supply system device 21 runnings and change by power supply unit 29, to keep relevant information warning, the demonstration of testing result, till coming to handle, the site operation personnel (as: unusual battery is taken out replacing).

Claims

1. An automatic battery detection device for detecting the performance of the battery that supplies power to a computer system device, characterized in that the device includes:

A charging circuit for charging the battery, having at least one internal switch that can be controlled;

A discharge circuit connected between the battery and the system device for allowing the battery to discharge the system device;

A basic input/output system unit for reading the working state corresponding to battery charge and discharge, and sending out the test results; and

A first control line for connecting the basic input-output system unit and the internal switch, the basic input-output system unit can control the opening and closing of the internal switch through the first control line.

2. The battery automatic testing device according to claim 1, characterized in that said basic input/output system unit is connected to a display unit for displaying test results in the system device.

3. The battery automatic detection device according to claim 1, characterized in that said working state includes the output voltage value of the battery.

4. The battery automatic detection device according to claim 1, characterized in that said working state includes the output current value of the battery.

5. The battery automatic detection device according to claim 1, characterized in that said working state is the body temperature of the battery.

6. The battery automatic detection device according to claim 1, wherein the charging circuit further comprises:

a power supply; and

A controllable power switch is controlled by connecting with the basic input/output system unit through a connection channel and a second control circuit.

7. The battery automatic testing device according to claim 1, characterized in that said connection channel is a parallel connection channel.

8. The battery automatic detection device according to claim 1, characterized in that the discharge circuit also includes a bridge between the charging circuit and the discharging circuit to prevent the current flowing out of the battery from flowing backward to the charging circuit The diode, and the n-pole of the diode is connected to the charging circuit, and the p-pole is connected to the discharging circuit.

9. An automatic battery detection method, which is a method for detecting the performance of the battery that supplies power to a computer system device within a predetermined number of detection cycles, characterized in that the detection method includes:

reading the working state corresponding to the operation of the battery from a basic input-output system unit;

When the working state does not meet a battery electrical standard, the basic input and output system unit sends a warning message to the system device;

When the working state conforms to the electrical standard of the battery, the basic input-output system unit sends a state information to the system device;

When the capacity of the battery is less than 100%, the battery is charged by a charging circuit;

When the capacity of the battery reaches 100%, a discharge circuit commands the battery to discharge the system device;

reading a discharge state corresponding to the battery discharge by the BIOS unit: and

When the discharge state does not meet the electrical standard of the battery, a power supply provides power required by the system device.

10. The automatic battery detection method according to claim 9, wherein the warning information and status information are displayed on a display unit in the system device.

11. The battery automatic detection method according to claim 10, wherein said display unit is an indicator light.

12. The battery automatic detection method according to claim 10, characterized in that said display unit is a screen.

13. The battery automatic detection method according to claim 9, characterized in that said working state and discharging state are output voltage values of the battery.

14. The battery automatic detection method according to claim 9, characterized in that said working state and discharging state are output current values of the battery.

15. The battery automatic detection method according to claim 9, characterized in that the working state and discharging state are the body temperature of the battery.

16. The battery automatic detection method according to claim 9, characterized in that the detection method further comprises:

When the capacity of the battery has reached 100%, the BIOS unit closes an external switch in the charging circuit via a second control circuit; and

The basic input-output system unit closes an internal switch in the charging circuit through a first control circuit, and the battery discharges and supplies power to the system device through the discharging circuit.

17. The battery automatic detection method according to claim 9, said detection method further comprising:

When the discharge state does not meet the electrical standard of the battery, stop the discharge of the battery to the system device by the basic input and output system unit through an information line; and

The basic input-output system unit turns on the power switch through the second control circuit to supply the power required by the system device.