CN101039037A - Charging management chip - Google Patents
Charging management chip Download PDFInfo
- Publication number
- CN101039037A CN101039037A CNA200710048898XA CN200710048898A CN101039037A CN 101039037 A CN101039037 A CN 101039037A CN A200710048898X A CNA200710048898X A CN A200710048898XA CN 200710048898 A CN200710048898 A CN 200710048898A CN 101039037 A CN101039037 A CN 101039037A
- Authority
- CN
- China
- Prior art keywords
- battery
- charging
- temperature
- discharge
- charge
- 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.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a charging management chip, which includes a charging control output module, a discharging control module, a battery voltage sampling input module, a fan driving output module, a buzzer output module, a dual-color LED control output module, a serial data output module. The control function of peripheral pins of the chip is programmable without being supported by peripheral controller, so that full automatization of the charging process detecting control can be realized. The invention needs lesser peripheral elements, and is easy for application design.
Description
Technical field
The present invention relates to charger, be specifically related to a kind of charging management chip.
Background technology
At present, the quick charge managing chip mainly contains two types, a kind of single-chip microcomputer, and a kind of is quick charge management special chip.When adopting chip microcontroller middle and high end quick charger, single-chip microcomputer is had relatively high expectations, the I/O mouth more such as needs need carry AD etc., also will develop related software, and often cost is higher.What have the obvious market advantage at present on ni-mh/NI-G quick charger mainly is the charger of Japanese brand, comprise SANYO, SONY, PANASONIC etc., and the super despot of the GP of joint brand, the scheme that they adopt mainly is the MCU of band AD, secondly coding is that special-purpose ASCI chip is realized then.That the rapid intelligent charger of a lot of imports or homemade famous brand name uses all is the MCU of band AD function, needs coding to realize all charge functions, has also brought the software threshold, thereby has limited the quantity of industry producer.
Summary of the invention
Technical problem to be solved by this invention is how a kind of charging management chip is provided, and the external terminal controlled function of this chip is able to programme, need not the peripheral control unit support, makes charging process detect the control full automation, and required peripheral components is few, and Application Design is simple.
Technical problem proposed by the invention is to solve like this: construct a kind of charging management chip, comprise charging control output module, discharge control module, cell voltage collection input module, fans drive output module, buzzer output module, dual-colored LED control output module and serial data output module, wherein:
Charging control output module: connect charge switch circuit, delivery outlet (CHGCTRL1～4) high level is effective, controls opening or closing of corresponding charge circuit switch;
Discharge control output module: connect discharge switching circuit, delivery outlet (DISCHG1～4) low level is effective, controls opening or closing of corresponding discharge loop switch;
Cell voltage is gathered input module: connect voltage collection circuit, input port mouth (CELVOLT1～4) links to each other with a anode in four road charge circuits respectively, is used to gather the magnitude of voltage of every batteries;
Battery temperature is gathered input module: connect temperature sampling circuit, input port (CELTMP1～4) respectively with temperature sampling circuit in four temperature sensors in one link to each other collection corresponding battery temperature information;
The fans drive output module: connect fan circuit, delivery outlet (FANDRV) high level is effective, links to each other direct drive fan under adaptive condition with the positive input pin of fan;
The buzzer output module: connect buzzer circuit, delivery outlet (BUZZER) high level is effective, links to each other with the positive input pin of buzzer, can directly drive buzzer under adaptive condition;
Dual-colored LED control output module: connect the charged state display circuit, (LED1A/LED1B～LED4A/LED4B) low level is effective for the dual-colored LED control delivery outlet of demonstration cell charging state, wherein (LED1A～4A) links to each other with the negative electrode of the red utmost points of four dual-colored LED respectively, LED1B～4B links to each other with the negative electrode of the green utmost point of four dual-colored LED respectively, and four dual-colored LED adopt the mode of anode altogether;
Serial data output module: connect the battery electric quantity display module, pin (SERIES_OUT) is sent the information about power of battery in real time with serial data mode, is used for intuitively showing battery electric quantity.
According to charging management chip provided by the present invention, it is characterized in that, charging control output module selects delivery outlet (CHGTIME0, CHGTIME1) to set the mean charging current of quick charge and the relation between the corresponding battery capacity by the charging interval, determines the maximum charge time.
According to charging management chip provided by the present invention, it is characterized in that cell voltage is gathered input module at preliminary filling with fill soon under the state, can judge the quality of battery, the cell voltage that samples is higher than the threshold voltage of setting, and battery is a bad battery.
According to charging management chip provided by the present invention, it is characterized in that, the control pin in the discharge control output module be changed to DISCHG effectively after, whether chip carries out the discharge operation of negative pulse, detect discharge process and finish, after discharge finishes, disconnect discharge path, automatically perform charging operations.
According to charging management chip provided by the present invention, it is characterized in that, battery temperature is gathered input module and is gathered near the temperature information of battery by the battery temperature Acquisition Circuit, to judge that battery charge or discharge process are whether in normal condition: if temperature is below 02 ℃, more than 45 2 ℃, think that then the ambient temperature of charging is improper, do not carry out charging operations, allow yellow led Chang Liang, waiting temperature is normal; If temperature is normal, then begin to carry out next step battery detecting and charge or discharge operation; If temperature range is normal, but surpass 352 ℃, then open fans drive simultaneously, close fans drive after being lower than 25 2 ℃ to be controlled at the charging incipient stage,, judge that then battery is bad if detecting temperature is higher than higher limit; In the quick charge stage, if detecting temperature is higher than higher limit, then stop the quick charge process, transfer the boost charge process to, judge that according to imposing a condition battery is full of again; In discharge process, if detect temperature and be higher than higher limit, then stop discharge process, treat that temperature drops to safety value and just reenters discharge process when following.
According to charging management chip provided by the present invention, it is characterized in that, also be provided with the battery quality detection module: after battery charge, raise rapidly as if voltage, think that then this battery is non-ni-mh/nickel-cadmium cell, thereby stop charging operations, send battery miscue sound, simultaneously to red light LED that should battery with 2HZ flicker expression battery mistake; In battery charging process, cell voltage does not rise for a long time or temperature raises rapidly, thinks that then battery damages, thereby stops charging operations, sends battery miscue sound, simultaneously to red light LED that should battery with 2HZ flicker expression battery mistake.
Beneficial effect of the present invention is: 1. this chip integrated whole algorithms in hardware to the quick charge management, and need not to develop Control Software, thereby effectively shorten the design cycle of product, the simplified design flow process, required peripheral components is few, makes Application Design become simple; 2. when adopting chip microcontroller middle and high end quick charger, single-chip microcomputer is had higher requirements,, need carry AD etc., also will develop related software, adopt the required cost of single-chip microcomputer often higher like this such as the more I/O mouth of needs; 3. this chip and circuit thereof can be realized the accurate control to the quick charge process, such as having adopted the pulse current charge form of being with the process that sparks.Can in the quick charge process, in time eliminate the electric polarization effect that big electric current causes like this, make the battery charge effect better; 4. because quick charger relates to safety problem, have more advantage the relative common single-chip microcomputer of the consistency that application-specific integrated circuit (ASIC) is good with stability.In addition, also adopt the design of some personalizations: built-in 10 bit A/D converters, can gather the voltage and the temperature information of every batteries in real time, the interference that " Condition fit " function that carries can avoid environmental change to bring guarantees reliable to the detection accuracy of judgement of fast charge/discharge process.Detection determination methods to every batteries charge/discharge process has voltage negative to increase (Δ V), maximum voltage, maximum charge time, four kinds of modes of maximum temperature, assess comprehensively by multi-parameter and to judge, be full of to guarantee that battery is maximized, avoid simultaneously overcharging, thereby prolong battery useful life.Can judge battery validity automatically, discern battery variety automatically, possess overtemperature prote and maximum charge guardtime, guarantee the fail safe of charging process.More perfect functions comprises: can directly drive the state that 4 dual-colored LED show each battery; Can carry out auditory tone cues to the charge/discharge state; Under high-temperature condition, can start fan automatically; Possess charge/discharge status data output function, can intuitively show the electric weight of each battery.
Description of drawings
Fig. 1 is the logic block-diagram of charging management chip provided by the present invention;
Fig. 2 is the pin layout viewing of charging management chip provided by the present invention;
Fig. 3 is the electrical schematic diagram of charging management chip provided by the present invention;
Fig. 4 is the charger configuration switch circuit diagram in the charging management chip application scheme provided by the present invention;
Fig. 5 is the temperature sampling circuit figure in the charging management chip application scheme provided by the present invention;
Fig. 6 is the charged state display circuit figure in the charging management chip application scheme provided by the present invention;
Fig. 7 is the discharge switching circuit figure in the charging management chip application scheme provided by the present invention;
Fig. 8 is the charge switch circuit figure in the charging management chip application scheme provided by the present invention;
Fig. 9 is the battery electric quantity display circuit figure in the charging management chip application scheme provided by the present invention;
Figure 10 is the buzzer circuit figure in the charging management chip application scheme provided by the present invention;
Figure 11 is the fan circuit figure in the charging management chip application scheme provided by the present invention;
Figure 12 is the power unit circuit diagram in the charging management chip application scheme provided by the present invention;
Figure 13 is the decoding single chip circuit figure in the charging management chip application scheme provided by the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the logic block-diagram of charging management chip provided by the present invention, this chip have voltage acquisition and temperature acquisition function, control charging or discharge as required simultaneously, and the state output function is arranged.As shown in Figure 2, this chip adopts QFP44 standard packaging form, and chip pin is arranged as shown in table 1:
Table 1
| Sequence number | The pin | Direction | Explanation | |
| 1 | CELTMP1 | In | The temperature acquisition mouth of | |
| 2 | CELTMP2 | In | The temperature acquisition mouth of | |
| 3 | CELTMP3 | In | The temperature acquisition mouth of the | |
| 4 | CELTMP4 | In | The temperature acquisition mouth of the | |
| 5 | CHG/DISCHG | In | Charge/discharge is selected pin; " 0 " being charging, " 1 is " for filling after the discharge again. | |
| 6 | CHG_EN | In | Chip operation enable pin " 1 " is not worked, " 0 " | |
| 7 | TM | In | Test pattern control pin: " 0 " normal mode of operation, " 1 " Full | |
| 8 | NC | Not connect | ||
| 9 | XTAL2 | In | | |
| 10 | XTAL1 | Out | The | |
| 11 | NC | Not connect | ||
| 12 | NC | Not connect | ||
| 13 | FANDRV | Out | Fans drive control output. | |
| 14 | BUZZER | Out | | |
| 15 | VREF | In | The reference voltage input of | |
| 16 | GND | In | Ground |
(connecing following table)
| Sequence number | The pin | Direction | Explanation | |
| 17 | SERIES_OUT | Out | Serial data output. | |
| 18 | DISCHG4 | Out | The discharge control pin of the 4th batteries: " 1 " for not discharging, " 0 " is discharge. | |
| 19 | DISCHG3 | Out | The discharge control pin of the 3rd batteries: " 1 " for not discharging, " 0 " is discharge. | |
| 20 | DISCHG2 | Out | The discharge control pin of second batteries: " 1 " for not discharging, " 0 " is discharge. | |
| 21 | DISCHG1 | Out | The discharge control pin of first segment battery: " 1 " for not discharging, " 0 " is discharge. | |
| 22 | NC | Not connect | ||
| 23 | NC | Not connect | ||
| 24 | LED4B | Out | The dual-colored LED output B end of the 4th batteries charged state. | |
| 25 | LED4A | Out | The dual-colored LED output A end of the 4th batteries charged state. | |
| 26 | LED3B | Out | The dual-colored LED output B end of the 3rd batteries charged state. | |
| 27 | LED3A | Out | The dual-colored LED output A end of the 3rd batteries charged state. | |
| 28 | SCAN_ENABLE | In | Full scan test enable is selected control pin, ground connection during operate as normal. | |
| 29 | LED2B | Out | The dual-colored LED output B end of the second batteries charged state. | |
| 30 | LED2A | Out | The dual-colored LED output A end of the second batteries charged state. | |
| 31 | LED1B | Out | The dual-colored LED output B end of first segment battery charging state. | |
| 32 | LED1A | Out | The dual-colored LED output A end of first segment battery charging state. | |
| 33 | NH/ND (*) | In | Ni-mh/nickel-cadmium cell is selected pin." 0 " is Ni-MH battery, and " 1 " is nickel-cadmium cell. | |
| 34 | CHGCTRL4 | Out | The 4th batteries charging control signal: " 1 " is charging, and " 0 " is not for filling. | |
| 35 | CHGCTRL3 | Out | The 3rd batteries charging control signal: " 1 " is charging, and " 0 " is not for filling. | |
| 36 | CHGCTRL2 | Out | The second batteries charging control signal: " 1 " is charging, and " 0 " is not for filling. | |
| 37 | CHGCTRL1 | Out | First segment battery charge control signal: " 1 " is charging, and " 0 " is not for filling. | |
| 38 | VCC | In | Power supply | |
| 39 | CHGTIME0 | In | Charging interval control.(CHGTIME1, CHGTIME0) 00:C/2; 01:C; 10:2C; 11: | |
| 40 | | |||
| 41 | CELVOLT4 | In | The current voltage acquisition mouth of the | |
| 42 | CELVOLT3 | In | The current voltage acquisition mouth of the | |
| 43 | CELVOLT2 | In | The current voltage acquisition mouth of | |
| 44 | CELVOLT1 | In | The current voltage acquisition mouth of first segment battery |
As Fig. 3～shown in Figure 13, this charging management chip is mainly gathered input module, fans drive output module, buzzer output module, dual-colored LED control output module and serial data output module by charging control output module, discharge control module, cell voltage and is constituted, can realize the mode of charged in parallel or serial connection charge, in turn battery be carried out pulse current charge by an outside constant current of regulating.The setting in charging interval is by selecting pin (CHGTIME0, CHGTIME1) to set the mean charging current and the relation between the corresponding battery capacity (being C value) of quick charge, and the while has also just been determined the maximum charge time, specifically sees Table 2 and table 3:
Table 2 (setting of Ni-MH battery C value)
| CHGTIME1 | CHGTIME0 | The C value | Number of batteries (only) | The maximum charge time (minute) |
| 0 | 0 | C/2 | 1～2 | 200 |
| 3～4 | 400 | |||
| 0 | 1 | | 1～2 | 90 |
| 3～4 | 180 | |||
| 1 | 0 | | 1～2 | 45 |
| 3～4 | 90 | |||
| 1 | 1 | | 1～2 | 25 |
| 3～4 | 50 |
Table 3 (setting of nickel-cadmium cell C value)
| CHGTIME1 | CHGTIME0 | The C value | Number of batteries (only) | The maximum charge time (minute) |
| 0 | 0 | C/2 | 1～2 | 225 |
| 3～4 | 450 | |||
| 0 | 1 | | 1～2 | 105 |
| 3～4 | 210 | |||
| 1 | 0 | | 1～2 | 50 |
| 3～4 | 100 | |||
| 1 | 1 | | 1～2 | 30 |
| 3～4 | 60 |
The maximum charge time is a safeguard protection time, is not the actual battery charge time, and the actual battery charging interval should be less than the maximum charge time.After reaching maximum and filling the time, no matter what state is charging process be in, charging process all will stop, to play the effect that guarantees charging safety.This chip internal has a voltage detection module, can do-Δ V and ceiling voltage analysis by detecting the current voltage of battery.Inside also has a temperature detecting module, can be by detecting resistance near the thermistor of battery, obtain Current Temperatures information, carry out under inappropriate temperature conditions to prevent the cell charging process, in order to satisfy the demand of large current charge, chip is provided with the fan control output that produces according to temperature information.After the CHG/DISCHG signal changed, the charge/discharge process of the new battery that inserts was subjected to the influence of current selection, originally carried out battery unaffected of charge/discharge.
The charging process of this chip is as follows: after inserting battery, at first detect battery, according to the selection of NH/ND control pin battery is carried out validity and judge.If battery is effective, judges whether and to carry out discharge operation to battery by the level that detects CHG/DISCHG control pin again.If discharge, enter charging more automatically after then earlier battery discharge being finished, otherwise directly enter charging process.After battery began quick charge, corresponding red LED was lighted.Chip detects automatically to charging process, begin to descend when detecting cell voltage, satisfy-during Δ V condition, when perhaps maximum voltage value continues to reach certain hour, when perhaps temperature surpasses higher limit, when perhaps the charging interval surpasses set point, judge that then the quick charge process finishes, change over to battery is carried out the boost charge process, to guarantee that battery is full of fully.Battery is full of the corresponding green LED in back to be lighted, and red LED is extinguished, and sends charging and finishes auditory tone cues, changes over to battery is carried out the trickle charge stage.Before battery was removed, green LED kept illuminating state, and trickle charge is carried out always, to replenish the loss of self-discharge of battery.
Current value is calculated as follows in the charging process: definition I
CBe the quick charge average current, the actual charge current of charge cycle is set to I
Chg, the actual discharge electric current of discharge cycle is set to I
Dischg, then according to different C values, for I
CPrecise calculation as follows:
1/2C：I
C＝I
chg×(63/128)-I
dischg/32
1C：I
C＝I
chg×(31/64)-I
dischg/32
2C：I
C＝I
chg×(15/32)-I
dischg/32
4C：I
C＝I
chg×(7/16)-I
dischg/32
In the practical application, discharging current I
DischgValue determine by the resistance value of discharge loop, in the practical application, the C value of charging process, I
CValue, I
ChgDefinite method of value is as follows:
Reference table 4.2.1 and the table 4.2.2, the charging deadline is as required determined the C value;
2. determine the average electric current I of charging according to the C value
CValue: I
C=battery capacity * C value (is noted: I in actual applications
CShould equal or be slightly larger than calculated value);
3. according to given I
CComputing formula calculates the I of corresponding C value
Chg, I
ChgBe exactly the actual current value of charger power supply, this value is the actual current parameter of design charger power supply.
Illustrate: the setting battery capacity is 2000mAh, I
Dischg≈ 1000mA required about 1.5 hours to finish charging (2 joint) with interior.Then: determine that according to the charging interval C value is 1C, determines charging current: I according to the C value again
C=2000mA * 1=2000mA is again according to the I of given corresponding 1C
CComputing formula (I
C=I
Chg* (31/64)-I
Dischg/ 32) calculate: I
Chg=(I
C+ I
DischgWhen/32) * (64/31)=(2000mA+1000mA/32) * (64/31) ≈ 4200mA. promptly designed charger, the charge power supply current value should be designed to equal or be slightly larger than 4200mA.
When battery in the charge or discharge process, this chip can be by near the temperature information the outside thermistor network collection battery, to judge that whether battery charge or discharge process are in normal condition.After chip detection is inserted into to battery, at first gather the ambient temperature and the judgement of this battery, if temperature is below 0 ± 2 ℃, more than 45 ± 2 ℃, think that then the ambient temperature of charging is improper, do not carry out charging operations, allow yellow led Chang Liang, waiting temperature is normal.If temperature is normal, then begin to carry out next step battery detecting and charge or discharge operation.If temperature range is normal, but surpass 35 ± 2 ℃, then open fans drive simultaneously, close fans drive control after being lower than 25 ± 2 ℃.In the charging incipient stage,, judge that then battery is bad if detecting temperature is higher than higher limit.In the quick charge stage, if detecting temperature is higher than higher limit, then stop the quick charge process, transfer the boost charge process to, judge that according to imposing a condition battery is full of again.In discharge process, if detect temperature and be higher than higher limit, then stop discharge process, treat that temperature drops to safety value and just reenters discharge process when following.If fans drive is effective, and all batteries all charge finish after, close fans drive output.Because in being higher than the quick charge process of C/2, big electric current may cause battery to cause overtemperature in the heating of charging process, so good heat radiation need be considered to guarantee suitable charging temperature.
When external circuit the charge/discharge of GM6801 control pin (CHG/DISCHG) is changed to DISCHG effectively after, whether chip carries out the discharge operation of negative pulse, detect discharge process and finish.After discharge finishes, disconnect discharge path, automatically perform charging operations.In the discharge process, the red LED of battery correspondence is lighted and with 0.5HZ flicker, after discharge was finished, auditory tone cues was finished in the output discharge, and the battery after discharge is finished is removed or when not having battery discharge, all LED lamps extinguish.Chip can detect the validity and the non-ni-mh/nickel-cadmium cell of identification of ni-mh/nickel-cadmium cell automatically, and exportable detection information.Detailed process is: after battery charge,, think that then this battery is non-ni-mh/nickel-cadmium cell, thereby stop charging operations, send battery miscue sound if voltage raises rapidly, simultaneously to red light LED that should battery with 2HZ flicker expression battery mistake.In battery charging process, cell voltage does not rise for a long time or temperature raises rapidly, thinks that then battery damages, thereby stops charging operations, sends battery miscue sound, simultaneously to red light LED that should battery with 2HZ flicker expression battery mistake.
Charging and the output of discharge condition data, the UART mode is adopted in data output, baud rate 600bps, 10 of frame lengths, each output comprises 2 bytes, and first byte is the data frame head, and set form is " XX010101 " for from high to low, the label of the highest two bit representation batteries, the data of indicating second byte are the data of which battery; Second byte then represented the concrete charging and discharging state data of battery, and each byte content comprises: the indication of battery charging and discharging state, overtemperature indication, the indication of battery mistake, the current voltage indication of battery.Overtemperature indication in the data output: if undesired in charging incipient stage ambient temperature, then output environment overtemperature indication, etc. ambient temperature normal after this recovering state; If overtemperature in the quick charge process, then overtemperature sign continuously effective is removed until battery; If overtemperature in discharge process, then the overtemperature sign lasts till after temperature returns to the temperature that allow to continue discharge and cancels.
Data output period is by following rule: sending number for the first time is to export immediately after inserting detecting battery, order by 1 to 4 is exported the state of 1 to No. 4 battery successively continuously (if battery does not insert, then do not export this joint information), data stationary is " 00000001 ", undesired if detect ambient temperature afterwards, then export the overtemperature indication, if ambient temperature is dateout not then normally, after finishing, the validity detection exports battery error message or initial voltage of battery value again, after this then export magnitude of voltage or the temperature value or the vicissitudinous data of state of this batteries, state does not change does not then export this battery data, promptly after the batteries data output, have only the magnitude of voltage that waits this batteries or temperature value or state to change after the output data second time again.The marking signal that battery enters discharge regime is that fixed data is " 00000011 " from high to low, if in the charging process or the charging finish after, battery is removed, then export fixed data immediately and be " 00000111 " from high to low, the undesired output fixed data of ambient temperature is " 00000101 " from high to low, and ambient temperature is recovered to send fixed data and is " 00001001 " from high to low.
It is emphasized that in addition that in temperature collection circuit select thermistor extremely important, thermistor is the key element of collecting temperature in the chip application system.Thermistor must directly or by Heat Conduction Material closely contact with tested battery, B value=3 of thermistor, 300K, the resistance value of thermistor determines that according to application circuit thermistor (RT) is connected with a resistance (R), resistance other end connection+5V power supply (Vi), thermistor other end ground connection, the tie point of thermistor and resistance are drawn the voltage sample information that reaction temperature changes.In application circuit, ni-mh/nickel-cadmium cell selects pin (NH/ND) to be connected with an external switch, selects this pin to connect high level or low level decides the rechargeable battery type by switch, low level is a ni-mh, high level is a NI-G, when this pin state changes, has reset function simultaneously; Charge/discharge selects pin (CHG/DISCHG) to be connected with an external switch, selects this pin to connect high level or low level by switch
The decision charge or discharge, low level is charging, high level is discharge; Charging interval selects pin (CHGTIME0/CHGTIME1) to be connected with external circuit respectively, connects high level or low level by setting this pin, by the state decision charging interval (being the C value) of two pins of CHGTIME0/CHGTIME1.The chip of QFP44 encapsulation adopts four road charge/discharge loops independently to control, and can carry out charged in parallel/discharge management to maximum 4 joint different models, the approaching ni-mh/nickel-cadmium cell combination in any of capacity.When being applied to four road charged in parallels/discharge control mode, VCC and Vref connect+5V usually, and wherein Vref requires to add the 10uF shunt capacitance increases stability.Work clock is selected the passive crystal oscillator of 32.768kHz for use.GM6801 provides charging control output, discharge control output, cell voltage collection input, fans drive output, buzzer output, dual-colored LED control output and serial data output respectively, the definition and the function of these function pins are respectively: charging control output (CHGCTRL1～4) high level is effective, controls opening or closing of corresponding charge circuit switch; Discharge control output (DISCHG1～4) low level is effective, controls opening or closing of corresponding discharge loop switch; Cell voltage is gathered input port (CELVOLT1～4) and is linked to each other with a anode in four road charge circuits respectively, is used to gather the magnitude of voltage of every batteries; Battery temperature gather input port (CELTMP1～4) respectively with four temperature sensors in one link to each other collection corresponding battery temperature information; Fans drive output (FANDRV) high level is effective, links to each other with the positive input pin of fan, under certain condition direct drive fan; Buzzer output (BUZZER) high level is effective, links to each other with the positive input pin of buzzer, can directly drive buzzer under certain condition; (LED1A/LED1B～LED4A/LED4B) low level is effective in the dual-colored LED control output of demonstration cell charging state, wherein LED1A～4A links to each other with the negative electrode of the red utmost point of four dual-colored LED respectively, LED1B～4B links to each other with the negative electrode of the green utmost point of four dual-colored LED respectively, and these four dual-colored LED adopt the mode of anode altogether; Serial data output pin (SERIES_OUT) is sent the information about power of battery in real time with serial data mode, is used for intuitively showing battery electric quantity.The charging management chip of QFP44 encapsulation also can carry out the charge/discharge management to series battery.When carrying out charge/discharge control at series battery, only need road charge/discharge control loop wherein to realize.In charge/discharge Managed Solution at series battery, the setting of control pin and input and output pin with the difference of charged in parallel/discharge management is: cell voltage is gathered input port (getting CELVOLT1 here) and is linked to each other by a bleeder circuit and series battery are anodal, and the magnitude of voltage of series battery is delivered to cell voltage to the magnitude of voltage that is equivalent to a batteries through bleeder circuit and gathered input port (CELVOLT1); Originally for realize judging automatically whether the charge/discharge loop has battery and voltage acquisition input port (CELVOLT1) add before+the 5V pull-up circuit is no longer suitable, after removing this pull-up circuit, the beginning of charge/discharge is controlled by the chip enable switch, when chip enable switch connection earth potential (GND), the beginning charge/discharge, the management of charge/discharge process and control are by finishing automatically.When chip enable switch connection+5V, chip quits work.
During this charging management chip, concrete application process is as follows:
1.VCC connect usually+5V with Vref, wherein Vref requires to add the 10u shunt capacitance increases stability;
2. the work clock of this chip is selected the passive crystal oscillator of 32.768kHZ for use.
3. ni-mh/nickel-cadmium cell is selected pin (NH/ND), is connected with external circuit, by selecting this pin to connect high level or low level decides the rechargeable battery type.Low level is a ni-mh, and high level is a NI-G.When this pin state changes, has reset function simultaneously.
4. charge/discharge is selected pin (CHG/DISCHG), is connected with external circuit, and by selecting this pin to connect high level or low level decides charge or discharge, low level is charging, and high level is for discharging.
5. the charging interval is selected pin (CHGTIME0/CHGTIME1), is connected with external circuit respectively, connects high level or low level by selecting this pin, by the state decision charging interval of two pins of CHGTIME0/CHGTIME1.
6. the current charging voltage of every batteries is gathered input port (CELVOLT1～4), links to each other with road anode in four road charge circuits respectively, is used to gather the magnitude of voltage of every batteries.
7. the charging temperature of every batteries is gathered input port (CELTMP1～4), respectively with four temperature sensors in one link to each other, by this temperature sensor collection corresponding battery temperature.
8. the control output (CHGCTRL1～4) of every road charge circuit, high level is effective, links to each other with the charging control switch of corresponding charge circuit, controls opening or closing of corresponding charge switch.
9. the control output (DISCHG1～4) of every road discharge loop, low level is effective.Link to each other with the discharge control switch of corresponding discharge loop, control opening or closing of corresponding discharge switch.
10. fan drive controlling output (FANDRV), high level is effective.This pin links to each other with the positive input pin of a fan, under certain condition direct drive fan.
11. buzzer output (BUZZER), high level is effective.This pin links to each other with the positive input pin of a buzzer, can directly drive buzzer under certain condition.
12. the dual-colored LED of every batteries charged state control output (LED1A/LED 1B～LED4A/LED 4B), low level is effective.Wherein LED1A～4A links to each other with the negative electrode of the red utmost point of four dual-colored LED respectively, and LED1B～4B links to each other with the negative electrode of the green utmost point of four dual-colored LED respectively, and these four dual-colored LED adopt the mode of anodes altogether.
Claims (6)
1, a kind of charging management chip comprises charging control output module, discharge control module, cell voltage collection input module, fans drive output module, buzzer output module, dual-colored LED control output module and serial data output module, wherein:
Charging control output module: connect charge switch circuit, delivery outlet (CHGCTRL1～4) high level is effective, controls opening or closing of corresponding charge circuit switch;
Discharge control output module: connect discharge switching circuit, delivery outlet (DISCHG1～4) low level is effective, controls opening or closing of corresponding discharge loop switch;
Cell voltage is gathered input module: connect voltage collection circuit, input port mouth (CELVOLT1～4) links to each other with a anode in four road charge circuits respectively, is used to gather the magnitude of voltage of every batteries;
Battery temperature is gathered input module: connect temperature sampling circuit, input port (CELTMP1～4) respectively with temperature sampling circuit in four temperature sensors in one link to each other collection corresponding battery temperature information;
The fans drive output module: connect fan circuit, delivery outlet (FANDRV) high level is effective, links to each other direct drive fan under adaptive condition with the positive input pin of fan;
The buzzer output module: connect buzzer circuit, delivery outlet (BUZZER) high level is effective, links to each other with the positive input pin of buzzer, can directly drive buzzer under adaptive condition;
Dual-colored LED control output module: connect the charged state display circuit, (LED1A/LED1B～LED4A/LED4B) low level is effective for the dual-colored LED control delivery outlet of demonstration cell charging state, wherein (LED1A～4A) links to each other with the negative electrode of the red utmost points of four dual-colored LED respectively, LED1B～4B links to each other with the negative electrode of the green utmost point of four dual-colored LED respectively, and four dual-colored LED adopt the mode of anode altogether;
Serial data output module: connect the battery electric quantity display module, pin (SERIES_OUT) is sent the information about power of battery in real time with serial data mode, is used for intuitively showing battery electric quantity.
2, charging management chip according to claim 1, it is characterized in that, charging control output module selects delivery outlet (CHGTIME0, CHGTIME1) to set the mean charging current of quick charge and the relation between the corresponding battery capacity by the charging interval, determines the maximum charge time.
3, charging management chip according to claim 1 is characterized in that, cell voltage is gathered input module at preliminary filling with fill soon under the state, can judge the quality of battery, and the cell voltage that samples is higher than the threshold voltage of setting, and battery is a bad battery.
4, charging management chip according to claim 1 is characterized in that, the control pin in the discharge control output module be changed to DISCHG effectively after, whether chip carries out the discharge operation of negative pulse, detect discharge process and finish, after discharge finishes, disconnect discharge path, automatically perform charging operations.
5, charging management chip according to claim 1, it is characterized in that, battery temperature is gathered input module and is gathered near the temperature information of battery by the battery temperature Acquisition Circuit, to judge that battery charge or discharge process are whether in normal condition: if temperature is below 0.2 ℃, more than 45.2 ℃, think that then the ambient temperature of charging is improper, do not carry out charging operations, allow yellow led Chang Liang, waiting temperature is normal; If temperature is normal, then begin to carry out next step battery detecting and charge or discharge operation; If temperature range is normal, but surpass 35.2 ℃, then open fans drive simultaneously, close fans drive after being lower than 25.2 ℃ to be controlled at the charging incipient stage,, judge that then battery is bad if detecting temperature is higher than higher limit; In the quick charge stage, if detecting temperature is higher than higher limit, then stop the quick charge process, transfer the boost charge process to, judge that according to imposing a condition battery is full of again; In discharge process, if detect temperature and be higher than higher limit, then stop discharge process, treat that temperature drops to safety value and just reenters discharge process when following.
6, charging management chip according to claim 1, it is characterized in that, also be provided with the battery quality detection module: after battery charge, raise rapidly as if voltage, think that then this battery is non-ni-mh/nickel-cadmium cell, thereby stop charging operations, send battery miscue sound, simultaneously to red light LED that should battery with 2HZ flicker expression battery mistake; In battery charging process, cell voltage does not rise for a long time or temperature raises rapidly, thinks that then battery damages, thereby stops charging operations, sends battery miscue sound, simultaneously to red light LED that should battery with 2HZ flicker expression battery mistake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710048898XA CN101039037A (en) | 2007-04-19 | 2007-04-19 | Charging management chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710048898XA CN101039037A (en) | 2007-04-19 | 2007-04-19 | Charging management chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101039037A true CN101039037A (en) | 2007-09-19 |
Family
ID=38889751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710048898XA Pending CN101039037A (en) | 2007-04-19 | 2007-04-19 | Charging management chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101039037A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399439B (en) * | 2007-09-26 | 2011-05-25 | 联想(北京)有限公司 | Battery protection method and apparatus used for electronic product |
| CN102447143A (en) * | 2010-10-13 | 2012-05-09 | 凹凸电子（武汉）有限公司 | Battery systems, battery pack controller and monitoring method of battery pack |
| CN101714766B (en) * | 2008-10-06 | 2012-10-10 | 郭献元 | Battery high-temperature status prevention and protection method and system |
| CN102841318A (en) * | 2011-06-24 | 2012-12-26 | 索尼公司 | Monitoring apparatus and method, monitoring control apparatus and method, and power supply apparatus |
| CN103762623A (en) * | 2013-12-23 | 2014-04-30 | 惠州市蓝微电子有限公司 | Integrated circuit for lithium battery management system |
| CN104333091A (en) * | 2014-11-19 | 2015-02-04 | 惠州Tcl移动通信有限公司 | Charging quantity display control method and system based on mobile terminal and mobile terminal |
| CN106842048A (en) * | 2017-01-20 | 2017-06-13 | 广州日滨科技发展有限公司 | The capacity check method system of elevator emergency power supply and elevator emergency power supply |
| CN107782987A (en) * | 2016-08-24 | 2018-03-09 | 神讯电脑(昆山)有限公司 | The charge function method of testing of board |
| CN108268111A (en) * | 2016-12-30 | 2018-07-10 | 北京小米移动软件有限公司 | Charging temperature control method, charging temperature control device and electronic equipment |
| CN108521417A (en) * | 2018-03-30 | 2018-09-11 | 维沃移动通信有限公司 | A kind of communication processing method and mobile terminal |
| CN110838603A (en) * | 2019-11-12 | 2020-02-25 | 淮安信息职业技术学院 | Intelligent management system and method for electric quantity and temperature of electric vehicle battery |
| CN111601422A (en) * | 2020-05-27 | 2020-08-28 | 维沃移动通信有限公司 | Starting circuit and electronic equipment |
| CN111983292A (en) * | 2020-07-17 | 2020-11-24 | 苏州浪潮智能科技有限公司 | PSU voltage detection system based on server test |
-
2007
- 2007-04-19 CN CNA200710048898XA patent/CN101039037A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399439B (en) * | 2007-09-26 | 2011-05-25 | 联想(北京)有限公司 | Battery protection method and apparatus used for electronic product |
| CN101714766B (en) * | 2008-10-06 | 2012-10-10 | 郭献元 | Battery high-temperature status prevention and protection method and system |
| CN102447143A (en) * | 2010-10-13 | 2012-05-09 | 凹凸电子（武汉）有限公司 | Battery systems, battery pack controller and monitoring method of battery pack |
| CN102841318A (en) * | 2011-06-24 | 2012-12-26 | 索尼公司 | Monitoring apparatus and method, monitoring control apparatus and method, and power supply apparatus |
| CN102841318B (en) * | 2011-06-24 | 2016-12-21 | 索尼公司 | Monitoring device and method, monitoring and control equipment and method and power-supply device |
| CN103762623A (en) * | 2013-12-23 | 2014-04-30 | 惠州市蓝微电子有限公司 | Integrated circuit for lithium battery management system |
| CN103762623B (en) * | 2013-12-23 | 2016-01-20 | 惠州市蓝微电子有限公司 | A kind of lithium battery management system integrated circuit |
| CN104333091A (en) * | 2014-11-19 | 2015-02-04 | 惠州Tcl移动通信有限公司 | Charging quantity display control method and system based on mobile terminal and mobile terminal |
| CN107782987A (en) * | 2016-08-24 | 2018-03-09 | 神讯电脑(昆山)有限公司 | The charge function method of testing of board |
| CN108268111A (en) * | 2016-12-30 | 2018-07-10 | 北京小米移动软件有限公司 | Charging temperature control method, charging temperature control device and electronic equipment |
| CN106842048A (en) * | 2017-01-20 | 2017-06-13 | 广州日滨科技发展有限公司 | The capacity check method system of elevator emergency power supply and elevator emergency power supply |
| CN106842048B (en) * | 2017-01-20 | 2019-10-29 | 日立楼宇技术（广州）有限公司 | The capacity check method system of elevator emergency power supply and elevator emergency power supply |
| CN108521417A (en) * | 2018-03-30 | 2018-09-11 | 维沃移动通信有限公司 | A kind of communication processing method and mobile terminal |
| CN108521417B (en) * | 2018-03-30 | 2020-04-14 | 维沃移动通信有限公司 | Communication processing method and mobile terminal |
| CN110838603A (en) * | 2019-11-12 | 2020-02-25 | 淮安信息职业技术学院 | Intelligent management system and method for electric quantity and temperature of electric vehicle battery |
| CN111601422A (en) * | 2020-05-27 | 2020-08-28 | 维沃移动通信有限公司 | Starting circuit and electronic equipment |
| CN111601422B (en) * | 2020-05-27 | 2022-03-18 | 维沃移动通信有限公司 | Starting circuit and electronic equipment |
| CN111983292A (en) * | 2020-07-17 | 2020-11-24 | 苏州浪潮智能科技有限公司 | PSU voltage detection system based on server test |
| CN111983292B (en) * | 2020-07-17 | 2022-12-16 | 苏州浪潮智能科技有限公司 | PSU voltage detection system based on server test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101039037A (en) | Charging management chip | |
| CN104052130B (en) | For ferric phosphate lithium cell power-supply management system and the method for work of service robot | |
| CN103427460B (en) | A kind of power supply terminal, charge control method and device | |
| CN105227013B (en) | A kind of electric tool and its control method | |
| CN102130483B (en) | Equalizing charging and discharging method for power type lithium-ion battery | |
| CN105071453A (en) | Battery management system | |
| CN1960111A (en) | Device and method for controlling procedure of charging batteries | |
| CN103019234A (en) | Battery management and acquisition subsystem of new energy vehicle and method for controlling battery management and acquisition subsystem | |
| CN202995453U (en) | Battery management and acquisition subsystem of new energy vehicle | |
| CN210984891U (en) | Intelligent temperature control system for lithium battery protection board | |
| CN201323466Y (en) | Single battery charger adopting an SCM to conduct safety control | |
| CN107069886B (en) | Storage battery parallel self-adaptive charging and discharging device and method based on MOS (metal oxide semiconductor) tube | |
| CN108963362A (en) | A kind of lead-acid battery of electric vehicle charging remediation management method and the prosthetic device that charges | |
| CN206575193U (en) | charger for lithium battery | |
| CN104577228B (en) | System for detecting and trimming voltage deviation of battery equalization modules | |
| CN1489252A (en) | Intelligent lithium ion battery protection circtuit | |
| CN201622335U (en) | Laptop battery tester and test system thereof | |
| CN110445222A (en) | A kind of lithium battery group charging-discharging controller | |
| CN203434650U (en) | Battery management device | |
| CN203387282U (en) | Box-level battery management system | |
| CN201576721U (en) | Mine-lamp battery charging management device | |
| CN109103955A (en) | Lead-acid accumulator equilibrium and monitoring method and system | |
| CN108270039B (en) | A kind of method that lead-acid battery of electric vehicle is repaired in small electric discharge | |
| CN107364539A (en) | A kind of efficient electric motor-car uses formula maintenance-free lead accumulator system | |
| CN207835131U (en) | Intelligent charge control device for wind-driven generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |