CN102082446B - Multisection battery core management system - Google Patents
Multisection battery core management system Download PDFInfo
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- CN102082446B CN102082446B CN 200910225550 CN200910225550A CN102082446B CN 102082446 B CN102082446 B CN 102082446B CN 200910225550 CN200910225550 CN 200910225550 CN 200910225550 A CN200910225550 A CN 200910225550A CN 102082446 B CN102082446 B CN 102082446B
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- battery core
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Abstract
The invention provides a multisection battery core management system, comprising a battery pack and a portable electronic device, wherein the battery pack comprises electric and non-electric detecting modules of a battery, multisection battery cores and a slave battery communication protocol controller; while the portable electronic device comprises an embedded controller and a master battery communication protocol controller; parameters needed for calculating the remaining electric quantity of the battery are measured in the battery pack, while the calculation of the remaining electric quantity of the battery is carried out by the embedded controller of the portable electronic device, therefore, the battery pack can achieve the purpose of managing each battery core without using a microprocessor.
Description
Technical field
The invention relates to a kind of battery dump energy management framework, particularly relevant for a kind of battery (battery with multi cells) dump energy management system that is applicable to Multisection battery core.
Background technology
Battery can say all portable electron device power resources, and for example: mobile phone, notebook computer, personal digital assistant, walkman etc. all depend on battery that electric power is provided.But battery is a kind of device of accumulating electric weight after all, when portable electron device uses with regard to the electric energy of consuming cells.When portable electron device was unlocked so that the time spent, battery electric power will continue to be consumed until this portable electron device is closed or remaining electric energy when being not enough to drive this device, and portable electron device will be forced to close.The represented meaning of the latter is that the electric power that is stored in the battery is lower than a critical value.Generally speaking, no matter consider with environmental protection, perhaps with long-time overall average cost thinking, the many modes that can take battery recharge of portable electron device replenish the electric energy that originally consumes return.
The good battery of one battery management program can be repeated to charge hundreds of times usually, even reaches thousands of times.On the other hand, because the endurance of battery is also often judged the quality of notebook computer, therefore, most notebook computers not only requires the battery capacity of single battery itself to want high, more require a power brick to include the not only battery of a joint, for example the battery of at least two joints even four joints or six joints.Thus, because the contained chemical property of every batteries core itself and the consumption that all may make every batteries core electric weight at the relative position of power brick difference to some extent, therefore, the management of battery is with regard to relatively than only having the single battery core to come more complicatedly.
See also the power brick of Multisection battery core managing electric quantity framework shown in Figure 1 and the schematic diagram of notebook computer relativeness.Power brick 10 among Fig. 1 has comprised Multisection battery core 15; battery protecting circuit 20, battery behavior detection module 25, battery electric quantity computing module 30 (gauge); from SMBus (SystemManagement Bus, System Management Bus) controller 40s, P+ and P-.Wherein, P+ and P-are the power lines that power brick offers notebook computer 50, and perhaps notebook computer 50 charges to power brick through said power.Battery protecting circuit 20 comprises the comparator that overcharges, (not shown) such as overdischarge comparator, overcurrent comparator and MOS FET, and battery behavior detection module 25 then comprises non-electrical detection module 25a and electrical detection module 25b.Non-electrical detection module 25a such as battery surface temperature detect, and electrical detection module 25b then is the detection of charge and discharge electric current and every batteries core voltage of battery 15.Battery capacity is calculated module 30 and is then comprised a microprocessor, microprocessor is take the voltage data of battery behavior detection module 25 output, current data, temperature data as foundation, and the program of being deposited by the read-only memory of microprocessor or other EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) or flash memory calculates the dump energy of battery 15.As for then being a kind of communication interface from SMBus controller 40s, use and use the portable electron device of this power brick, such as notebook computer 50 communications.
On the other hand, notebook computer 50 has then comprised main SMBus controller 40m and has embedded controller (embedded controller corresponding to the part of power brick 10; At this and hereinafter referred to as EC) 45.Main SMBus controller 40m and from SMBus controller 40s as its name suggests wherein, the two has principal and subordinate (master-slave) relation.Main SMBus controller 40m has active to asking the electric quantity data ability from SMBus controller 40s, then is passive response from SMBus controller 40s.
For notebook computer 50, EC 45 is built in the keyboard controller in being.Be different from desktop computer, the keyboard controller of notebook computer has comprised a microprocessor, in conjunction with main SMBus controller 40m, and can be via the data that require battery capacity from SMBus controller 40s to power brick.EC 45 has been arranged, it does not need to take notebook computer 50 CPU resource and can manage separately the electric weight of battery, and electric quantity data is offered monitoring and the management of operating system to carry out battery electric quantity of notebook computer.
Another kind of known Multisection battery core managing electric quantity framework sees also schematic diagram shown in Figure 2.
Wherein, main SMBus controller 40m and from the principal and subordinate (master-slave) of SMBus controller 40s relation, just like the framework of known Fig. 1, but electrical detection module 230 and electric weight computing module then utilize respectively the hardware of notebook computer 250 end keyboard controller itself and the firmware among the EC 230 to finish.Electrical detection module 225b obtains the terminal voltage of Multisection battery core 215 via the output of an end P-of Multisection battery core 215 and battery protecting circuit 220; therefore; what it measured is terminal voltage, charging current and the discharging current of whole Battery pack core, and the firmware of EC 230 also can't be managed each batteries core.
The Multisection battery core management framework (Fig. 1) that relatively the first is traditional and the second tradition Multisection battery core management framework (Fig. 2), can find respectively has its pluses and minuses.The second tradition Multisection battery core management framework can reduce the cost of power brick, because its hardware and software of having used on the EC 230 is finished the measurement of Multisection battery core 215 dump energies, but shortcoming is the voltage that it can not obtain the single battery core, and this is disadvantageous for the single battery core management of Multisection battery core 215.And the first tradition Multisection battery core management framework amount to be the voltage of each batteries core, can manage each batteries core, but shortcoming is that the cost of power brick can be higher, because power brick 10 just needs correction and measurement complete but consuming time when dispatching from the factory, in addition, power brick 10 needs a built-in microprocessor to reach relevant detection module in the inner.
In view of this, wish in the industry to propose a kind of advantage Multisection battery core management framework that comprises above-mentioned two kinds of traditional Multisection battery core management frameworks.
Summary of the invention
The present invention discloses a kind of Multisection battery core management system and comprises power brick and portable electron device; wherein; power brick has comprised the electrical and non-electrical detection module of battery; Multisection battery core; battery protecting circuit; from battery communication protocol controller (communication protocol controller); portable electron device then comprises embedding controller and main battery communication protocol controller; battery dump energy calculates needed parameter and is measured by the non-electrical detection module that electrically reaches of the battery in the power brick; via the SMBus interface, the embedding controller that is sent to portable electron device calculates.
Therefore, power brick of the present invention can save microprocessor, but can manage the battery of each joint, improves fail safe and the useful life of power brick.
Description of drawings
In conjunction with appended accompanying drawing, can understand easily the plurality of advantages of foregoing and the present invention by following detailed description, wherein:
Fig. 1 shows the Multisection battery core management framework schematic diagram of painting according to known technology the first embodiment.
Fig. 2 shows the Multisection battery core management framework schematic diagram of painting according to known technology the second embodiment.
Fig. 3 shows according to the designed Multisection battery core management framework schematic diagram of preferred embodiment of the present invention.
Fig. 4 shows the power brick internal circuit block schematic diagram according to the designed Multisection battery core management of preferred embodiment of the present invention.
Drawing reference numeral
Power brick 10,210,310 embed controller 45
Battery protecting circuit 20,220,320 battery electric quantity computing modules 30
EC+ battery electric quantity computing module 230,330 drives and delay circuit 320a
Multisection battery core 15,215,315 notebook computers 50,250,350
The non-electrical detection module of battery 25a, 225a battery electrically reach non-electrical detection module 25,325
Battery electrical detection module 25b, 225b current detection circuit 327
From SMBus controller 40s, 240s master SMBus controller 40m, 240m
Coulomb counter 323 analog-digital converters 329
EEPROM (Electrically Erasable Programmable Read Only Memo) 337 register groups 336
Embodiment
As discussed previously, the Multisection battery core management framework (Fig. 1) that the first is traditional and the second tradition Multisection battery core management framework (Fig. 2) respectively have its good and bad point.The present invention then provide another kind of Multisection battery core management framework it comprised above two kinds advantage.Please refer to block schematic diagram shown in Figure 3.Power brick 310 comprised Multisection battery core 315, battery protecting circuit 320, battery electrically reach non-electrical detection module 325, from battery communication protocol controller 340s; portable electron device 350 for example notebook computer end has then comprised EC (embedding controller) 330, battery electric quantity computing module (gauge is packaged in the EC embedded controller 330), has reached main battery communication protocol controller 340m.The battery communication protocol controller still has other battery communication protocol except SMBus, for example, and I
2C and HDQ.P+ and P-, just like known technology described be power line, be built in the keyboard controller in the EC (embedding controller) 330.
At this, battery electrically measure and the device of non-electrical measurement identical with traditional the first Multisection battery core management framework, all be to be placed in the power brick 310.But the calculating of battery electric quantity is then at notebook computer end 350.Therefore, in power brick without the need for microprocessor.Notebook computer end 350 needs only the information that transmits by SMBus, and the dump energy that namely can calculate Multisection battery core 315 with microprocessor and the included firmware program thereof of EC, the operating system of the notebook computer end 350 of arranging in pairs or groups again namely can be reached the managing electric quantity monitoring and management of whole system.In addition, EC (embedding controller) 330 reaches inner parameter and the state that can set and obtain power brick 310 from battery communication protocol controller 340s by main battery communication protocol controller 340m, reaches the purpose of management power brick 310.
Power brick calcspar framework further description of the present invention sees also Fig. 4.Battery protecting circuit 320 comprises driving and delay circuit 320a, voltage comparator group 331, FET 1, FET 2 and FET 3, with charging and the discharge prevention that power brick is provided.Wherein, voltage comparator group 331 comprises a plurality of voltage comparators, compares with terminal voltage and the reference potential that each batteries core is provided respectively.
Battery electrically reaches non-electrical detection module 325 and comprises current detection circuit 327, Temperature Detector 328, analog-digital converter (ADC) 329, reaches a coulomb counter 323.Analog-digital converter 329 is that the mode of adopting the multiplex (MUX) extracts the cross-pressure of Multisection battery core 315, resistance R s and the voltage that Temperature Detector 328 transmits in proper order, deposits in register group 336 behind the analog-to-digital.Wherein, Temperature Detector 328 detects the temperature on Multisection battery core 315 surfaces, and cell balancing circuit 326 transmits the analog signal of every batteries core voltage, and what current detection circuit 327 was measured is the cross-pressure of resistance R s.Wherein, the resistance R s cross-pressure signal of current detection circuit 327 amounts, after analog-digital converter 329 conversions, carry out the computing of cumulative (during charging) and regressive (during discharge) with coulomb counter 331, be stored in again in the register of register group 336 correspondences the i.e. charging of battery 315 and discharging current cumulant.
Be a SMbus controller in one embodiment from battery communication protocol controller 340s, comprise register group 336 (including a plurality of registers), EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) 337, a control logic circuit 339, a SMbus interface 338.Wherein, some characterisitic parameters of EEPROM (Electrically Erasable Programmable Read Only Memo) 337 storage batteries bags, EC will control the instruction of power brick, transmission by SMbus, order about control logic circuit 339 and by winding displacement 339a digital controlled signal is sent to all functions square in the power brick, to manage whole power brick.For avoiding drawing too crowded, winding displacement 339a and each module are also not shown.
The inner working of power brick is known technology, below only outlines the operation procedure of Fig. 4.At first be the battery equilibrium function, the first control parameter of power brick management is sent to register group 336 by the main SMbus controller 340m of notebook computer via the SMbus interface 338 of power brick.Control logic circuit 339 just sends the first control signal by control logic circuit 339 and is sent to cell balancing circuit 326 by winding displacement 339a when receiving the first control parameter of register group 336.Cell balancing circuit 326 mats the first control signal is controlled discharging and recharging of each batteries core.Just forbid that when a certain batteries core voltage reaches the first preset value this batteries core continues charging, continue charging but allow other batteries core terminal voltage not reach the first preset value person.When being lower than the second preset value, just forbids a certain batteries core voltage that this batteries core continues discharge but allow other batteries core terminal voltage not to be lower than the second preset value person to continue discharge.The residue available power that cell balancing circuit 326 is kept each all batteries cores as far as possible approaches.
Next is the battery charging and discharging defencive function, and the second control parameter of power brick management also is to be sent to register group 336 by the main SMbus controller 340m of notebook computer via the SMbus interface 338 of power brick.Control logic circuit 339 just sends the second control signal by control logic circuit 339 and passes through winding displacement 339a to voltage comparator group 331 when receiving the second control parameter of register group 336.The result of voltage comparator group 331 will be sent to battery protecting circuit 320, and control charge switch FET1 and discharge switch FET2.The grid of charge switch FET1 is connected in pin CO, and the grid that electricity pass FET2 is opened in discharge is connected in pin DO.
When a certain batteries core of Multisection battery core voltage reaches the 3rd preset value, close FET1 to forbid the Multisection battery core continuation charging in the power brick with regard to the charge closing electricity, when a certain batteries core of Multisection battery core voltage is lower than the 4th preset value, just close the discharge electricity and close FET2 to forbid the Multisection battery core continuation discharge in the power brick.
In other words, the second control parameter is charging and the discharge of control power brick integral body.And the first control parameter is just controlled charging and the discharge of a certain batteries core.And want to reach the function of above-mentioned management power brick, then cell balancing circuit 326 and voltage comparator group 331 must can be known below the environment of voltage of single-unit battery core feasible.
Multisection battery core management framework of the present invention has following benefit:
(1) power brick can save microprocessor, because the module of the calculation of parameter that foundation is measured is to be undertaken by the embedding control module of portable electron device.
(2) every batteries core of Multisection battery core is measured separately so better managerial ability is arranged and is reached the purpose of extending battery life and greater security.
(3) power brick material cost and testing cost can obtain to reduce, but still without detriment to measuring separately every batteries core of Multisection battery core.
Though the present invention illustrates as above with preferred embodiments, so it is not to limit the present invention's spirit only to terminate in above-described embodiment that with the invention entity.Be with, the modification of doing within not breaking away from spirit of the present invention and scope all should be included in the protection range of claim.
Claims (10)
1. a Multisection battery core management system is characterized in that, described Multisection battery core management system comprises at least:
One power brick comprises:
Multisection battery core,
Battery electrically reaches non-electrical detection module,
From the battery communication protocol controller, and
Battery protecting circuit, wherein said battery electrically reaches non-electrical detection module and is connected in between battery communication protocol controller and the described Multisection battery core, to detect the data that electrically reach non-electric characteristics of described Multisection battery core, and transmit described data to described from the battery communication protocol controller, or by described from the battery communication protocol controller obtain first control parameter and second control parameter, to manage described Multisection battery core, do not comprise microprocessor in conjunction with described battery protecting circuit in the described power brick; And
One portable electron device comprises:
Battery electric quantity computing module and main battery communication protocol controller, described main battery communication protocol controller active is described from battery communication protocol controller 1 to described power brick) require the data of described detection and transfer to the dump energy that the battery electric quantity computing module calculates each single battery core of described Multisection battery core, 2) parameter is controlled in transmission described first and the second control parameter is extremely described from the battery communication protocol controller.
2. Multisection battery core management system as claimed in claim 1 is characterized in that, described electrical non-electrical detection module comprises described Multisection battery core at least to the described data that transmit from the battery communication protocol controller the single-unit voltage that reaches.
3. Multisection battery core management system as claimed in claim 2 is characterized in that, described electrically and non-electrical detection module to the described data that transmit from the battery communication protocol controller, more comprise the electric current that flows into and flow out described Multisection battery core.
4. Multisection battery core management system as claimed in claim 1 is characterized in that, each batteries core discharges and recharges in described the first control parameter control Multisection battery core.
5. Multisection battery core management system as claimed in claim 1 is characterized in that, described the second control parameter is charging and the discharge of control power brick integral body.
6. Multisection battery core management system as claimed in claim 1 is characterized in that, described battery electric quantity computing module is located in the embedding controller of described portable electron device.
7. Multisection battery core management system as claimed in claim 6 is characterized in that, described battery electric quantity computing module is to be located in the embedding controller of described portable electron device with firmware or software pattern.
8. Multisection battery core management system as claimed in claim 6 is characterized in that, described embedding controller is present in the keyboard controller of described portable electron device.
9. Multisection battery core management system as claimed in claim 1 is characterized in that, describedly comprises SMBus, I from battery communication protocol controller and main battery communication protocol controller
2Wherein a kind of of C, HDQ.
10. Multisection battery core management system as claimed in claim 1 is characterized in that, described battery electrically and non-electrical detection module comprise that one coulomb of counter passes in and out the electric current of described Multisection battery core to carry out cumulative or regressive.
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| CN 200910225550 CN102082446B (en) | 2009-11-30 | 2009-11-30 | Multisection battery core management system |
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| CN 200910225550 CN102082446B (en) | 2009-11-30 | 2009-11-30 | Multisection battery core management system |
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| CN102082446A CN102082446A (en) | 2011-06-01 |
| CN102082446B true CN102082446B (en) | 2013-05-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI488405B (en) * | 2014-01-03 | 2015-06-11 | Hycon Technology Corp | Control method for achieving power transfer between stacked rechargeable battery cells and power transfer circuit thereof |
| TWI488406B (en) * | 2014-01-15 | 2015-06-11 | Hycon Technology Corp | Method of searching for full charge capacity of stacked recargeable battery cells in recargeable battery pack and battery management system made of the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1870346A (en) * | 2005-02-16 | 2006-11-29 | 戴尔产品有限公司 | Systems and methods for integration of charger regulation within a battery system |
| CN101192757A (en) * | 2006-11-29 | 2008-06-04 | 松下电器产业株式会社 | Charging system, charging device and battery pack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8547065B2 (en) * | 2007-12-11 | 2013-10-01 | Antonio Trigiani | Battery management system |
| JP4991514B2 (en) * | 2007-12-25 | 2012-08-01 | キヤノン株式会社 | Electronic device and control method thereof |
| JP2009272134A (en) * | 2008-05-07 | 2009-11-19 | Panasonic Corp | Authentication system, and electronic apparatus and battery pack using the same |
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2009
- 2009-11-30 CN CN 200910225550 patent/CN102082446B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1870346A (en) * | 2005-02-16 | 2006-11-29 | 戴尔产品有限公司 | Systems and methods for integration of charger regulation within a battery system |
| CN101192757A (en) * | 2006-11-29 | 2008-06-04 | 松下电器产业株式会社 | Charging system, charging device and battery pack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI488405B (en) * | 2014-01-03 | 2015-06-11 | Hycon Technology Corp | Control method for achieving power transfer between stacked rechargeable battery cells and power transfer circuit thereof |
| TWI488406B (en) * | 2014-01-15 | 2015-06-11 | Hycon Technology Corp | Method of searching for full charge capacity of stacked recargeable battery cells in recargeable battery pack and battery management system made of the same |
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| CN102082446A (en) | 2011-06-01 |
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