CN1357956A - Charger with energy detector - Google Patents
Charger with energy detector Download PDFInfo
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- CN1357956A CN1357956A CN 00134860 CN00134860A CN1357956A CN 1357956 A CN1357956 A CN 1357956A CN 00134860 CN00134860 CN 00134860 CN 00134860 A CN00134860 A CN 00134860A CN 1357956 A CN1357956 A CN 1357956A
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- rechargeable battery
- charger
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- circuit
- laptop
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Abstract
The charger with an energy detector includes one charger connected electrically between the power supply nad rechargeable battery to chanrge the battery; one built-in energy detector circuit to detect the residual electricity amount of the battery and trasnfer the amount via a system management bus to a portable data processor; and one current sensor circuit connected electrically between power supply and the energy detector circuit to charge the battery. Thus, the present invention increases the energy detection function by only increasing some circuit.
Description
The present invention relates to a kind of charger that is used for laptop, particularly relate to a kind of charger with energy measurement device (gauge).
Portable electron device, for example: laptop or PDA(Personal Digital Assistant) etc., tend to low cost and high efficiency direction and develop.For portable electron device, have a chargeable battery usually and carry and reuse to help the user.Because battery is overcharged easily (overcharging) and damage; so in order to protect battery to increase useful life; one energy detector is set with related datas such as the residual capacity (remaining capacity) that detects battery and electric weight percentages at inside battery, charger can determine whether continue battery charge by this.
Please refer to Fig. 1, the figure illustrates a kind of structure of known laptop, wherein laptop comprises a known main frame 11 and a cells known box 10.Cells known box 10 has battery 101 and energy detector 102.This battery 101 is a recharge-able battery, is generally lithium hydrogen or nickel-hydrogen chargeable cell and energy detector 102 is built in the cells known box 10, in order to the residual capacity that detects battery 101 and this message is turned back in the known main frame 11.Known main frame 11, structure as known laptop, have devices such as basic input output system (BIOS) 111, keyboard (K/B) 112, charger (charger) 113 and System Management Bus (SM bus) 114, wherein energy detector 102 sees through System Management Bus 114 message is returned to known main frame 11, learns by this whether the state of cells known box 10 and decision continue 10 chargings of cells known box.
Continuation is with reference to the annexation of figure 1 known laptop of explanation and battery case, System Management Bus 114 is connected between keyboard 112 and the charger 113 among Fig. 1 (A), and System Management Bus 114 then is connected between basic input output system 111 and the charger 113 among Fig. 1 (B).The difference of these two kinds of ways is that the structure of Fig. 1 (A) is easier to be built on the known main frame 11, but its infrastructure cost is higher; And Fig. 1 (B) infrastructure cost is lower, but the read-only memory demand of 111 pairs of central processing units of basic input output system is higher, and then causes the entire system performance to reduce.
Fig. 2 illustrates another embodiment of known laptop and battery case, and its structure and Fig. 1 (A) are similar.Institute's difference is energy detector 102 is not set in cells known box 10 and replaces with EEPROM (EEPROM) 103.The messages such as residual capacity of battery 101 can be stored in the EEPROM 103 and by System Management Bus 114 this message is turned back in the known main frame 11 in the relevant cells known box 10.In this structure, its cost is minimum, but the read-only memory demand of 112 pairs of central processing units of keyboard is higher, and then causes the entire system performance to reduce.Simultaneously, the keyboard 112 of known main frame 11 is non-standard configuration with basic input output system 111 and is only applicable in the laptop of particular type.
Main purpose of the present invention provides a kind of charger with energy detector, has saved the energy measuring circuit or the EEPROM that originally are arranged in the battery case, has reduced the manufacturing cost of battery case by this.
Another object of the present invention is providing a kind of charger with energy detector, a built-in energy detector in the charging circuit in main frame.Therefore, during charging circuit in making main frame, only increase the function that an adjunct circuit can reach energy measuring, therefore can not cause the manufacturing cost of charging circuit excessively to increase.
Another purpose of the present invention is providing a kind of charger with energy detector, in the structure of applicable laptop at original structure.Therefore, need not change any keyboard and basic input output system can be arranged on energy detector in the structure of laptop.
A further object of the present invention, is arranged on energy detector in the structure of laptop under the situation that does not take host system resources and retention system efficient in that a kind of charger main frame with energy detector is provided.
Desire of the present invention solves the expensive or low efficiency problem that known main frame and battery case cause, and therefore uses a kind of simple and easy energy measuring circuit to be built in the charger of main frame and uses the expensive problem that the additional-energy detector is caused in the battery case that is substituted in.
The present invention further provides charger, can improve the operating efficiency of host computer system by this with energy detector.
Charger with energy detector of the present invention, its plurality of advantages and feature will be further understood from following detailed description and accompanying drawing.
Fig. 1 is the structural representation of known laptop and battery case, and wherein Figure 1A is first embodiment and Figure 1B is second embodiment;
Fig. 2 is another embodiment schematic diagram of known laptop and battery pack structure;
Fig. 3 has the structural representation of the charger of energy detector for the present invention; And,
Fig. 4 has the circuit block diagram of the charger of energy detector for the present invention.
Please refer to Fig. 3, the preferred embodiment of laptop of the present invention is described, it comprises a battery case 20 and a main frame 21.But battery case 20 comprises the battery 101 and the identification code 201 of a recharge.But the battery 101 of recharge is generally the battery of lithium hydrogen or ni-mh form and is optimal selection with the lithium hydrogen battery.Identification code 201 directly is built in the battery case 20 when battery is made and each battery case 20 all has different identification code 201, and using provides a signal to main frame 21.It should be noted that battery case 20 itself does not have any energy testing apparatus that comprises current sense function or in order to the EEPROM of storage battery capacity state, so the element manufacturing cost of battery case 20 can decline to a great extent.
Main frame 21 comprises basic input output system 111, keyboard 112, have devices such as the charger 210 of energy measuring circuit and System Management Bus 114.Devices such as basic input output system 111, keyboard 112 and System Management Bus 114 do not need to do any change and structure shown in Figure 1A.Therefore, the present invention can not cause the problem shown in Fig. 1 (B), that is, though infrastructure cost is lower, basic input output system needs to handle through central processing unit to the signal of System Management Bus 114 outputs, and then causes the entire system performance to reduce.Or as the known laptop of Fig. 2 explanation and the problem of battery case embodiment, promptly, though its cost is minimum, keyboard 112 can occupy the space of main frame read-only memory and cause all standard configurations of non-laptop of reduction of entire system performance and keyboard and basic input output system.
When battery case 20 is installed on the main frame 21, identification code 201 at first has the identification code signal in the charger 210 of energy measuring circuit via being electrically connected input, and message returning to known main frame 11 by System Management Bus 114, main frame 21 is learnt the unique identifier 201 that belongs to each battery case 20 by this.Because all in the present invention battery cases 20 do not have energy detector, so can't detect the residual capacity of battery case 20 batteries own and electric weight percentage with repayment main frame 21.For prevent most battery cases 202 in turn in same main frame 21 charging cause main frame 21 can't discern different battery case 20 and the situation that causes overcharging, main frame 21 can be confirmed the state of battery to be charged by the signal of unique identifier 201 in the battery case 20.
The identification code signal comprises the sequence signal of battery case 20 and can be stored in basic input output system 111 or keyboard 112 is kept in the read-only memory that the user defines.Because sequence signal is only as the identification purposes, so can not occupy the too much space of main frame read-only memory or cause the entire system performance to reduce.Certainly, in another embodiment, relevant informations such as the residual capacity of battery 101 and electric weight percentage also can be simultaneously exist basic input output system 111 or keyboard 112 to keep in the read-only memory that the user defines with sequence signal.By this, when main frame 21 is confirmed battery to be charged by the identification code signal, can obtain relevant informations such as residual capacity and electric weight percentage and decision simultaneously and whether continue to charge.
Fig. 4 is the calcspar of explanation detailed circuit of the present invention, and as shown in the figure, battery case 20 also comprises a temperature-sensitive sticker 202, damages to prevent the overheated battery case 20 that causes in order to the operating temperature that detects battery case 20.
Continuation further specifies with reference to figure 4, main frame 21 also comprise transformer input 22, system DC/DC transducer 23, pulse-width modulator 24 (pulse-width modulator, PWM) and shunt 25.Input transformer 22 makes its running in order to DC power supply is offered main frame 21, and system DC/DC transducer 23 then converts the DC power supply of high pressure to exercisable appropriate voltage DC power supply (for example: central processing unit etc.) to provide main frame 21 other elements uses.To adjust the electric weight of charging, shunt 25 then is connected between charger 211 and the battery 101 pulse-width modulator 24 according to the signal of charger 211.Fig. 4 label 26 display system discharge circuit paths and label 27 display system charging circuit paths, this part is identical with known main machine structure, is therefore no longer given unnecessary details.
When battery case 20 inserted main frame 21, charger 211 was at first confirmed the battery case that inserts 20 by identification code 201.Energy measuring circuit 212 can be by related datas such as the residual capacity of the current strength of current sense circuit 213 decision battery case 20 and electric weight percentages, perhaps directly obtains related datas such as the residual capacity that is stored in the battery in the memory and electric weight percentage by system's pulse (SCL) of System Management Bus 114 and system data (SDA).Current sense circuit 213 extension circuit and the one end before for the input transformer 22 that is arranged on main frame 21 circuit connects energy measuring circuit 212 and the current sense result feedback to energy measuring circuit 212, and it comprises a concussion resistance and a current sense amplifier.But according to the present state of signal decision systems that current sense circuit 213 is obtained is discharge circuit path 26 or charging circuit path 27, and this state is feedback to energy measuring circuit 212.Charger 211 charges to battery case 20 in view of the above, because related datas such as residual capacity and electric weight percentage all can be by correctly obtaining in the charger 211, so battery can be because of the influence that is overcharged, thereby has prolonged the useful life of battery.
By above narration as can be known, the charger with energy detector of the present invention can be attached to a circuit on main frame 21 original circuit, therefore need not existing main frame 21 structures and agreement are done any change.Moreover system's pulse that transmits by System Management Bus 114 and system data etc. can't change or increase the load of main frame 21 because of the energy measuring circuit, so the usefulness of system can not reduce.
Those of ordinary skill in the art can clearly understand after describing preferred embodiment of the present invention in detail, can carry out various variations and change and the present invention also is not subject to the execution mode of the embodiment of specification to the present invention under the prerequisite that does not break away from described scope of following claim and spirit.
Claims (13)
1. charger with energy detector is arranged in the portable data processor in order to external rechargeable battery charging, comprises:
One charger is connected electrically between power supply and this rechargeable battery, in order to this rechargeable battery is charged;
One energy measuring circuit is built in the charger, in order to the surplus that detects this rechargeable battery and by a System Management Bus surplus of this rechargeable battery is imported this portable data processor; And,
Current sense circuit is connected electrically between this power supply and the energy measuring circuit, in order to detect current's intensity and it is feedback to this energy measuring circuit.
2. the charger with energy detector as claimed in claim 1, wherein aforementioned rechargeable battery has an identification code, with so that this portable data processor is discerned aforementioned rechargeable battery.
3. the charger with energy detector as claimed in claim 1, wherein the aforementioned currents sensing circuit comprises a concussion resistance and a current sense amplifier.
4. the charger with energy detector as claimed in claim 1, wherein when aforementioned energy measuring electric circuit inspection when this rechargeable battery has the highest volt, just stop this rechargeable battery is charged.
5. the charger with energy detector as claimed in claim 1, wherein when aforementioned energy measuring electric circuit inspection when the remaining battery rate of this rechargeable battery is higher than particular value, just stop this rechargeable battery is charged.
6. the charger with energy detector as claimed in claim 1, wherein the aforementioned system management bus can be connected on the basic input output system of this portable data processor.
7. the charger with energy detector as claimed in claim 1, wherein the aforementioned system management bus can be connected on the aforementioned keyboard of this Portable data processor.
8. laptop, optionally the rechargeable battery that has an identification code by a power supply or charges power supply is provided, and comprises:
One screen is in order to show the output image of this laptop;
One main frame has a charging circuit, is connected electrically between power supply and this rechargeable battery, in order to this rechargeable battery is charged; One energy measuring circuit forms with charger circuit is whole, in order to detect the surplus of this rechargeable battery; And a current sense circuit, be connected electrically between this power supply and the energy measuring circuit, in order to detect current's intensity and it is feedback to this energy measuring circuit.
9. a kind of laptop as claimed in claim 8, wherein the aforementioned currents sensing circuit comprises a concussion resistance and a current sense amplifier.
10. a kind of laptop as claimed in claim 8, wherein when aforementioned energy measuring electric circuit inspection when this rechargeable battery has the highest volt, just stop this rechargeable battery is charged.
11. a kind of laptop as claimed in claim 8, wherein when aforementioned energy measuring electric circuit inspection when the remaining battery rate of this rechargeable battery is higher than particular value, just stop this rechargeable battery is charged.
12. a kind of laptop as claimed in claim 8, wherein the aforementioned system management bus can be connected on the basic input output system of this laptop.
13. a kind of laptop as claimed in claim 8, wherein the aforementioned system management bus can be connected on the aforementioned keyboard of this laptop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00134860 CN1357956A (en) | 2000-12-06 | 2000-12-06 | Charger with energy detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00134860 CN1357956A (en) | 2000-12-06 | 2000-12-06 | Charger with energy detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1357956A true CN1357956A (en) | 2002-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00134860 Pending CN1357956A (en) | 2000-12-06 | 2000-12-06 | Charger with energy detector |
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| Country | Link |
|---|---|
| CN (1) | CN1357956A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342304C (en) * | 2005-01-20 | 2007-10-10 | 英业达股份有限公司 | Charging management method and system |
| CN101694516A (en) * | 2005-03-10 | 2010-04-14 | 索尼株式会社 | Battery residual quantity display method and electronic equipment |
| CN101963836A (en) * | 2010-09-28 | 2011-02-02 | 深圳市顶星数码网络技术有限公司 | Notebook computer battery module |
| CN103816012A (en) * | 2014-03-05 | 2014-05-28 | 陈淑琴 | Heat preservation and observation device for microsurgery postoperative arms and legs for field operations and application thereof |
| CN107809120A (en) * | 2016-09-02 | 2018-03-16 | 广达电脑股份有限公司 | Battery device, electronic device, and method for protecting battery device |
-
2000
- 2000-12-06 CN CN 00134860 patent/CN1357956A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342304C (en) * | 2005-01-20 | 2007-10-10 | 英业达股份有限公司 | Charging management method and system |
| CN101694516A (en) * | 2005-03-10 | 2010-04-14 | 索尼株式会社 | Battery residual quantity display method and electronic equipment |
| CN101963836A (en) * | 2010-09-28 | 2011-02-02 | 深圳市顶星数码网络技术有限公司 | Notebook computer battery module |
| CN103816012A (en) * | 2014-03-05 | 2014-05-28 | 陈淑琴 | Heat preservation and observation device for microsurgery postoperative arms and legs for field operations and application thereof |
| CN107809120A (en) * | 2016-09-02 | 2018-03-16 | 广达电脑股份有限公司 | Battery device, electronic device, and method for protecting battery device |
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