CN102590758A - High-voltage battery pack test system - Google Patents
High-voltage battery pack test system Download PDFInfo
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- CN102590758A CN102590758A CN2012100377846A CN201210037784A CN102590758A CN 102590758 A CN102590758 A CN 102590758A CN 2012100377846 A CN2012100377846 A CN 2012100377846A CN 201210037784 A CN201210037784 A CN 201210037784A CN 102590758 A CN102590758 A CN 102590758A
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Abstract
The invention discloses a high-voltage battery pack test system, which comprises a central processing unit (CPU) module, a discharge control module, a charge control module, a discharge power circuit, a charge power circuit, a power supply and a monomer voltage acquiring module; a battery pack is connected with the CPU module through the monomer voltage acquiring module; the battery pack is connected with the discharge power circuit; the battery pack is connected with the charge power circuit; the CPU module is connected with the charge power circuit through the power supply; the discharge power circuit is connected with the discharge control module; the charge power circuit is connected with the charge control module; and the discharge control module is connected with the CPU module, and the charge control module is connected with the CPU module. The test system provided by the invention has the advantages that the system uses a singlechip as a nuclear processing element, the charge and discharge time, capacitance, energy and the like of the battery pack are calculated through acquiring the information of the monomer voltage, general voltage, temperature, charge current, discharge current and the like of the battery pack, and the data is sent to an upper computer through the Ethernet and an RS485 bus.
Description
Technical field
The present invention relates to a kind of high-tension battery group test macro.
Background technology
The function of electric battery testing apparatus mainly is that battery is carried out charge-discharge test; Wherein how fast and safely to discharge and recharge be joint very important in the test equipment designs; Especially to the electric battery test of high-power, higher to accuracy, the security requirement of testing apparatus especially.Moreover, the real-time of the transmission of electric battery test data, accuracy are also most important.Therefore, the key of high-tension battery group test macro is to discharge and recharge control and communication quality.
At present, battery is carried out constant-current constant-voltage charging accepted by industry, but existing constant-voltage charge implementation mainly contains two types: software control constant voltage, hardware controls constant voltage as charging modes commonly used.The software constant voltage is generally carried out constant voltage through the mode that scm software is handled, and this mode is subject to the influence of factors such as crystal oscillator, voltage acquisition chip, program BUG, can't protect battery and testing apparatus timely and effectively.
Summary of the invention
Technical matters to be solved by this invention provides the good high-tension battery group test macro of a kind of security.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of high-tension battery group test macro; Comprise CPU module, discharge control module, charge control module, discharge power circuit, charge power circuit, power power-supply and monomer voltage acquisition module; Electric battery is connected with described CPU module through the monomer voltage acquisition module; Electric battery is connected with the discharge power circuit, and electric battery is connected with the charge power circuit, and the CPU module is connected with the charge power circuit through power power-supply; Described discharge power circuit is connected with described discharge control module; Described charge power circuit is connected with described charge control module, and the discharge control module is connected with the CPU module, and charge control module is connected with described CPU module.
Described CPU module is connected with host computer.
Described CPU module is connected with temperature collect module.
Described CPU module is connected with charge control module through the charging isolating interface; Described CPU module is connected with the discharge control module through the discharge isolating interface; Described CPU module is connected with power power-supply through the power power-supply isolating interface; The monomer voltage acquisition module is connected with the CPU module through the CAN transceiver, and temperature collect module is connected with the CPU module through described CAN transceiver, and described CPU module is connected with host computer through 485 modules or ethernet controller; Described CPU module is connected with real-time clock; Described CPU module is connected with EEPROM, and described CPU module is connected with switching input module, and described CPU module is connected with CS.
Described charge control module comprises charging current A/D acquisition module, charging control D/A module and charging control circuit; The charge power circuit is connected with the charging isolating interface through charging current A/D acquisition module; The charge power circuit is connected with charging control circuit, and the charging isolating interface is connected with charging control circuit through charging control D/A module.
Described discharge control module comprises voltage A/D acquisition module, discharge current A/D acquisition module, discharge control D/A module, charge/discharge control circuit, holding circuit; The discharge power circuit is connected with the discharge isolating interface through voltage A/D acquisition module; The discharge power circuit is connected with the discharge isolating interface through discharge current A/D acquisition module; The discharge power circuit is connected with charge/discharge control circuit; The discharge power circuit is connected with holding circuit, and the discharge isolating interface is connected with charge/discharge control circuit through discharge control D/A module.
Described charging control circuit comprises that model is that first multiplier of AD834, first operational amplifier that model is OP07, second operational amplifier that model is OP07, the 3rd operational amplifier and the model that model is OP07 are the four-operational amplifier of OP07; The 5th pin of first multiplier is connected with the 3rd pin of four-operational amplifier through the 20 resistance; The 4th pin of first multiplier is connected with second pin of four-operational amplifier through the 24 resistance; The 6th pin of four-operational amplifier is connected with second pin of the 3rd operational amplifier through the 23 resistance; Be provided with second electric capacity between second pin of the 3rd operational amplifier and the 6th pin; The 6th pin of the 3rd operational amplifier is connected with the negative pole of second diode through the 9th resistance; The positive pole of second diode connects the charge power circuit; Second pin of second operational amplifier is connected with the 6th pin, and the 6th pin of second operational amplifier connects the charge power circuit through the 8th resistance, and second pin of first operational amplifier is connected with the 6th pin of first operational amplifier through first electric capacity; The 6th pin of first operational amplifier is connected with the negative pole of first diode, and the positive pole of first diode connects the charge power circuit through the 4th resistance;
Described charge/discharge control circuit comprises the 7th operational amplifier that model is second multiplier of AD834, the 5th operational amplifier that model is OP07, model is OP07 the 6th operational amplifier and model are OP07; The 5th pin of second multiplier is connected with the 3rd pin of the 7th operational amplifier through the 14 resistance; The 4th pin of second multiplier is connected with second pin of the 7th operational amplifier through the 18 resistance; The 6th pin of the 7th operational amplifier is connected with second pin of the 6th operational amplifier through the 17 resistance; The 6th pin of the 6th operational amplifier is connected with the negative pole of the 3rd diode through the 7th resistance; The positive pole of the 3rd diode is connected with the discharge power circuit; Second pin of the 5th operational amplifier is connected with the 6th pin, and the 6th pin of the 5th operational amplifier is connected with the discharge power circuit through the 5th resistance.
Compared with prior art; The invention has the advantages that native system is is the core processing element with the single-chip microcomputer; Information such as the monomer voltage through gathering electric battery, total voltage, temperature, charging current, discharge current; The time that discharges and recharges of counting cell group, capacity, energy etc., and data are sent to host computer through Ethernet, RS485 bus.Ipc monitor system by microcomputer constitutes shows the test data that also recorder is arrived in real time, data is analyzed the control and measuring working state of system.In addition, according to testing requirement, on host computer, edit testing scheme, and download to EEPROM, single-chip microcomputer is controlled charge/discharge current, voltage and charge/discharge power according to testing scheme.In when charging if CPU module or data acquisition element meet accident fault, charging control circuit of the present invention can guarantee when cell voltage reach voltage is set after, be transferred to the constant-voltage charge state automatically, the safety of assurance battery and testing apparatus.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the structured flowchart of CPU module of the present invention;
Fig. 3 is the structured flowchart of charge control module of the present invention;
Fig. 4 is the structured flowchart of discharge control module of the present invention;
Fig. 5 is a charging control circuit schematic diagram of the present invention;
Fig. 6 is a charge/discharge control circuit schematic diagram of the present invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
A kind of high-tension battery group test macro; Comprise CPU module 1, discharge control module 2, charge control module 3, discharge power circuit 4, charge power circuit 5, power power-supply 6 and monomer voltage acquisition module 7, electric battery 8 is connected with CPU module 1 through monomer voltage acquisition module 7, and electric battery 8 is connected with discharge power circuit 4; Electric battery 8 is connected with charge power circuit 5; CPU module 1 is connected with charge power circuit 5 through power power-supply 6, and discharge power circuit 4 is connected with discharge control module 2, and charge power circuit 5 is connected with charge control module 3; Discharge control module 2 is connected with CPU module 1, and charge control module 3 is connected with CPU module 1.
Charge/discharge control circuit 27 comprises that model is that the second multiplier U4d, the model of AD834 is that the 5th operational amplifier U1d, the model of OP07 is the 6th operational amplifier U2d of OP07 and the 7th operational amplifier U3d that model is OP07; The 5th pin of the second multiplier U4d is connected with the 3rd pin of the 7th operational amplifier U3d through the 14 resistance R 14d; The 4th pin of the second multiplier U4d is connected with second pin of the 7th operational amplifier U3d through the 18 resistance R 18d; The 6th pin of the 7th operational amplifier U3d is connected with second pin of the 6th operational amplifier U2d through the 17 resistance R 17d; The 6th pin of the 6th operational amplifier U2d is connected with the negative pole of the 3rd diode D1d through the 7th resistance R 7d; The positive pole of the 3rd diode D1d is connected with discharge power circuit 4; Second pin of the 5th operational amplifier U1d is connected with the 6th pin, and the 6th pin of the 5th operational amplifier U1d is connected with discharge power circuit 4 through the 5th resistance R 4d.
Principle of work of the present invention:
The CPU control module:
The CPU control module is the core processing element with the single-chip microcomputer, and major function has: (1) obtains test data and handles calculating, will test critical quantity and be saved among the EEPROM, and according to result equipment controlled.(2) will test critical quantity and upload to host computer and monitor in real time, and equipment controlled according to the instruction of host computer.
The concrete realization: single-chip microcomputer links to each other with voltage A/D acquisition module, discharge current A/D acquisition module and the discharge control D/A module of discharge control module through the spi bus isolating interface; Link to each other with charging current A/D acquisition module, the charging control D/A module of charge control module through the spi bus isolating interface; Obtain the information such as cell voltage, charging current, discharge current of device channels; And accurately control discharging and recharging link, with the current/voltage of realizing appointment to battery charging and discharging.Through the spi bus isolating interface power power-supply of charging is controlled.
Connect with monomer voltage acquisition module, temperature collecting cell module through the CAN bus, obtain the information such as voltage, temperature of passage single battery; Real-time clock information through I2C bus fetch equipment.These data are vital for accuracy, the security of battery charging and discharging control.
Through RS485, Ethernet, the real time data during CPU will test uploads to host computer, and carries out the various instructions that host computer issues.
3.2 charge control module
The function of charge control module: charging current is gathered in (1), and through SPI data is passed to single-chip microcomputer.(2) single-chip microcomputer is through SPI control charging D/A module; Charging D/A has three the tunnel; Charging current D/A, charging voltage D/A, charge power D/A, the current setting value of corresponding constant-current circuit, the voltage setting value of constant voltage circuit, the set value of the power of permanent power circuit respectively.(3) charging D/A, charging current and battery voltage are input to charging control circuit, and the output of charging control circuit is connected to the charge power circuit module through relay, accomplish electric current with appointment to battery charge.
Charging control circuit is seen Fig. 5, the concrete realization:
The constant-current charge control circuit is the voltage follower circuit that is made up of operational amplifier U2, and the input of U2 is monolithic processor controlled charging current D/A signal, and the output of U2 is connected to public output through resistance R 8, and public output is through resistance R 2 ground connection.
The constant-voltage charge control circuit; Integrating circuit by operational amplifier U1, electric capacity E1 constitute is formed; Charging voltage D/A receives the in-phase input end of U1, and the battery voltage signal that feeds back is input to the inverting input of U1, and the output of U1 is connected to public output through resistance R 4 with diode D1.
Permanent power charging control circuit; Integrating circuit by operational amplifier U3, electric capacity E2 constitute is formed; Charge power D/A receives the in-phase input end of U3; Current signal that feeds back and battery voltage signal are input to the inverting input of U3 through hardware multiplier U5, differential amplifier U4, and the output of U3 is connected to public output through resistance R 9 with diode D2.
The voltage of public output is the result of the output voltage combined action of U1, U2, U3, and the output of U2 is worked in charging process all the time, and the output of U1, U3 is then through D1, the opening and closing realization of D2 and being connected and disconnection of public output.
If equipment work is at constant current charging mode, under this pattern, the voltage of electric battery is lower than the constant voltage setting value; Charge power is lower than permanent set value of the power; The output of U1, U3 reaches capacity, and saturation value is higher than the output voltage of U2, and then D1, D2 turn-off; Control circuit has only constant-current circuit to work, and the charge power circuit only receives the control of electric current D/A.Single-chip microcomputer is made comparisons the setting value of charging current sampled value and charging current, if sampled value is littler than setting value, then increases electric current D/A; Otherwise, then reduce electric current D/A.
If equipment work is in the constant-voltage charge pattern, under constant voltage mode, D1 is in opening, and the state of D2 depends on the setting value of permanent power, and control circuit is by the combined action of constant current, constant voltage, permanent power.If battery voltage reaches the constant voltage setting value, then constant voltage circuit plays a major role.If charging voltage D/A equates that with feedback voltage then the output of U1 remains unchanged; If charging voltage D/A is less than feedback voltage, then U1 be input as negatively only, the output voltage of U1 will reduce, the voltage of public output also reduces thereupon, the electric current of charge power circuit is corresponding to be reduced, cell voltage reduces; Otherwise, if charging voltage D/A is greater than feedback voltage, just being input as only of U1 then, the output voltage of U1 will increase, the cell voltage rising.Through above-mentioned feedback principle, cell voltage is kept the level of setting value, reach the effect of constant voltage.
If equipment work is at permanent power charge mode, under this pattern, battery voltage is lower than the constant voltage setting value, and D1 is in closed condition, and D2 opens, and control circuit is by the combined action of constant current, permanent power.If battery voltage reaches permanent set value of the power, then permanent power circuit plays a major role.If charge power D/A equates that with the feedback power signal then the output of U3 remains unchanged; If charge power D/A is less than the feedback power signal, then U3 be input as negatively only, the output voltage of U3 will reduce, the voltage of public output also reduces thereupon, charge power descends; Otherwise, if charge power D/A is greater than the feedback power signal, just being input as only of U3 then, the output voltage of U3 will increase, the charge power raising.Through above-mentioned principle, charge power is maintained the level of setting value, play the effect of permanent power.
3.3 discharge control module
The function of discharge control module: discharge current, battery voltage are gathered in (1), and through SPI data are passed to single-chip microcomputer.(2) single-chip microcomputer is through SPI control discharge D/A, and discharge D/A has two-way, discharge current D/A, discharge power D/A, the current setting value of corresponding constant-current control circuit, the set value of the power of constant-power control circuit respectively.(3) discharge D/A, discharge current, battery voltage are input to charge/discharge control circuit, and the output of generation finally arrives the discharge power circuit module through relay, makes the current discharge of equipment with appointment.
Charge/discharge control circuit is seen Fig. 6, the concrete realization:
The constant-current discharge control circuit is the voltage follower circuit that is made up of operational amplifier U1d, and the input of U1d is monolithic processor controlled discharge current D/A signal, and the output of U1d is connected to public output through resistance R 4d, and public output is through resistance R 2d ground connection.
Permanent power discharge control circuit; Integrating circuit by operational amplifier U2d, electric capacity E1d constitute is formed; Discharge power D/A receives the in-phase input end of U2d; Discharge current signal that feeds back and battery voltage signal are input to the inverting input of U2d through hardware multiplier U4d, differential amplifier U3d, and the output of U2d is connected to public output through resistance R 7d and diode D1d.
The voltage of public output is the result of the output voltage combined action of U1d, U2d, and the output of U1d is worked in discharge process all the time, and the output of U2d is then through the opening and closing realization of D1d and being connected and disconnection of public output.
If equipment work is in the constant-current discharge pattern, discharge power is lower than permanent set value of the power under this pattern, and the output of U2d reaches capacity; And saturation value is higher than the output voltage of U1d; Then D1d turn-offs, and control circuit has only constant-current circuit to work, and the discharge power circuit only receives the control of discharge current D/A.Single-chip microcomputer is made comparisons the setting value of discharge current sampled value and discharge current, if sampled value is littler than setting value, then increases discharge current D/A; Otherwise, then reduce discharge current D/A.
If equipment work is in permanent power discharge pattern, D1d is in opening under this pattern, and control circuit is by the combined action of constant current, permanent power.If discharge power reaches permanent set value of the power, then permanent power circuit plays a major role.If discharge power D/A equates that with the feedback power signal then the output of U2d remains unchanged; If discharge power D/A is less than the feedback power signal, then U2d be input as negatively only, the output voltage of U2d will reduce, the voltage of public output also reduces thereupon, discharge power descends; Otherwise, if charge power D/A is greater than the feedback power signal, just being input as only of U2d then, the output voltage of U2d will increase, the discharge power raising.Through above-mentioned principle, discharge power is maintained the level of setting value, play the effect of permanent power.
3.6 other modules
Discharging and recharging the power circuit module has the charging and two loops of discharging, and is controlled by charge control module, discharge control module respectively, and its major function is that the electric current with appointment charges to electric battery and discharges.Monomer voltage acquisition module, temperature collect module arrive single-chip microcomputer with the data transmission of gathering, to realize functions such as monomer constant voltage, monomer overvoltage protection, monomer under-voltage protection, overtemperature prote.
Claims (7)
1. high-tension battery group test macro; Comprise CPU module, discharge control module, charge control module, discharge power circuit, charge power circuit, power power-supply and monomer voltage acquisition module; Electric battery is connected with described CPU module through the monomer voltage acquisition module; Electric battery is connected with the discharge power circuit, and electric battery is connected with the charge power circuit, and the CPU module is connected with the charge power circuit through power power-supply; Described discharge power circuit is connected with described discharge control module; Described charge power circuit is connected with described charge control module, and the discharge control module is connected with the CPU module, and charge control module is connected with described CPU module.
2. a kind of high-tension battery group test macro according to claim 1 is characterized in that described CPU module is connected with host computer.
3. a kind of high-tension battery group test macro according to claim 2 is characterized in that described CPU module is connected with temperature collect module.
4. a kind of high-tension battery group test macro according to claim 3; It is characterized in that described CPU module is connected with charge control module through the charging isolating interface; Described CPU module is connected with the discharge control module through the discharge isolating interface, and described CPU module is connected with power power-supply through the power power-supply isolating interface, and the monomer voltage acquisition module is connected with the CPU module through the CAN transceiver; Temperature collect module is connected with the CPU module through described CAN transceiver; Described CPU module is connected with host computer through 485 modules or ethernet controller, and described CPU module is connected with real-time clock, and described CPU module is connected with EEPROM; Described CPU module is connected with switching input module, and described CPU module is connected with CS.
5. a kind of high-tension battery group test macro according to claim 4; It is characterized in that described charge control module comprises charging current A/D acquisition module, charging control D/A module and charging control circuit; The charge power circuit is connected with the charging isolating interface through charging current A/D acquisition module; The charge power circuit is connected with charging control circuit, and the charging isolating interface is connected with charging control circuit through charging control D/A module.
6. a kind of high-tension battery group test macro according to claim 5; It is characterized in that described discharge control module comprises voltage A/D acquisition module, discharge current A/D acquisition module, discharge control D/A module, charge/discharge control circuit, holding circuit; The discharge power circuit is connected with the discharge isolating interface through voltage A/D acquisition module; The discharge power circuit is connected with the discharge isolating interface through discharge current A/D acquisition module; The discharge power circuit is connected with charge/discharge control circuit, and the discharge power circuit is connected with holding circuit, and the discharge isolating interface is connected with charge/discharge control circuit through discharge control D/A module.
7. a kind of high-tension battery group test macro according to claim 6; It is characterized in that described charging control circuit comprises that model is that first multiplier of AD834, first operational amplifier that model is OP07, second operational amplifier that model is OP07, the 3rd operational amplifier and the model that model is OP07 are the four-operational amplifier of OP07; The 5th pin of first multiplier is connected with the 3rd pin of four-operational amplifier through the 20 resistance; The 4th pin of first multiplier is connected with second pin of four-operational amplifier through the 24 resistance; The 6th pin of four-operational amplifier is connected with second pin of the 3rd operational amplifier through the 23 resistance; Be provided with second electric capacity between second pin of the 3rd operational amplifier and the 6th pin; The 6th pin of the 3rd operational amplifier is connected with the negative pole of second diode through the 9th resistance; The positive pole of second diode connects the charge power circuit; Second pin of second operational amplifier is connected with the 6th pin, and the 6th pin of second operational amplifier connects the charge power circuit through the 8th resistance, and second pin of first operational amplifier is connected with the 6th pin of first operational amplifier through first electric capacity; The 6th pin of first operational amplifier is connected with the negative pole of first diode, and the positive pole of first diode connects the charge power circuit through the 4th resistance;
Described charge/discharge control circuit comprises the 7th operational amplifier that model is second multiplier of AD834, the 5th operational amplifier that model is OP07, model is OP07 the 6th operational amplifier and model are OP07; The 5th pin of second multiplier is connected with the 3rd pin of the 7th operational amplifier through the 14 resistance; The 4th pin of second multiplier is connected with second pin of the 7th operational amplifier through the 18 resistance; The 6th pin of the 7th operational amplifier is connected with second pin of the 6th operational amplifier through the 17 resistance; The 6th pin of the 6th operational amplifier is connected with the negative pole of the 3rd diode through the 7th resistance; The positive pole of the 3rd diode is connected with the discharge power circuit; Second pin of the 5th operational amplifier is connected with the 6th pin, and the 6th pin of the 5th operational amplifier is connected with the discharge power circuit through the 5th resistance.
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| CN201210037784.6A CN102590758B (en) | 2012-02-20 | 2012-02-20 | High-voltage battery pack test system |
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| CN201210037784.6A CN102590758B (en) | 2012-02-20 | 2012-02-20 | High-voltage battery pack test system |
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Also Published As
| Publication number | Publication date |
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| CN102590758B (en) | 2014-12-17 |
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