CN111458651A - Battery charge-discharge test system - Google Patents
Battery charge-discharge test system Download PDFInfo
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- CN111458651A CN111458651A CN202010448870.0A CN202010448870A CN111458651A CN 111458651 A CN111458651 A CN 111458651A CN 202010448870 A CN202010448870 A CN 202010448870A CN 111458651 A CN111458651 A CN 111458651A
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- battery
- monomer
- upper computer
- temperature
- voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a battery charging and discharging test system.A battery management module acquires battery data of each single battery cell and obtains the maximum voltage value and the minimum voltage value of each single battery cell through calculation, a first upper computer obtains the maximum voltage value and the minimum voltage value of each single battery cell according to the maximum voltage value and the minimum voltage value of each single battery cell and sends the maximum voltage value and the minimum voltage value of each single battery cell to a charging and discharging machine, the charging and discharging machine sends the maximum voltage value and the minimum voltage value of each single battery cell to a second upper computer, and the second upper computer controls the charging and discharging machine to control the charging of a battery through the maximum. The system is simple in structure and convenient to set, the charging and discharging machine is controlled to charge and discharge through the second upper computer, the system is prevented from being overcharged and overdischarged, and the test safety of the battery cell is improved.
Description
Technical Field
The invention relates to the technical field of battery testing, in particular to a battery charging and discharging testing system.
Background
Today, the new energy industry is continuously developed and is more and more known as a lithium battery with relatively mature technology and relatively superior performance in the industry, but the existing battery charging and discharging test system generally utilizes total pressure information to control charging and discharging, so that the risk of overcharging and overdischarging exists, and the test safety of a battery core is low.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a battery charging and discharging test system, so as to solve the problems of overcharge and overdischarge and low safety of cell test in the conventional battery charging and discharging test system.
In order to achieve the first object, the invention provides the following technical scheme:
a battery charge and discharge test system comprising:
the battery box comprises a plurality of battery boxes which are connected in series, and a plurality of single battery cells are arranged in each battery box respectively;
the battery management module is used for acquiring battery data of each single battery cell for calculation, obtaining a maximum voltage value and a minimum voltage value of each single battery cell and sending the maximum voltage value and the minimum voltage value to the first upper computer;
the first upper computer is connected with the battery management module, obtains the maximum monomer voltage and the minimum monomer voltage according to the maximum monomer voltage value and the minimum monomer voltage value of each monomer battery cell, and sends the maximum monomer voltage and the minimum monomer voltage to the charge and discharge machine;
the charging and discharging machine is connected with a second upper computer and sends the maximum monomer voltage and the minimum monomer voltage to the second upper computer;
and the second upper computer controls the charge and discharge machine to control the charging of the battery by the maximum monomer voltage and control the discharging of the battery by the minimum monomer voltage.
Preferably, the solar battery further comprises a third upper computer which is respectively connected with the first upper computer and the temperature control adjusting device, and the temperature control adjusting device is respectively connected with the water cooling plate of each battery box;
the battery management module obtains a single highest temperature value and a single lowest temperature value of each single battery cell according to the collected battery data of each single battery cell and sends the single highest temperature value and the single lowest temperature value to the first upper computer;
the first upper computer obtains the highest monomer temperature and the lowest monomer temperature according to the highest monomer temperature value and the lowest monomer temperature value of each monomer battery cell and sends the highest monomer temperature and the lowest monomer temperature to the third upper computer;
and when the difference value between the highest monomer temperature and the lowest monomer temperature is greater than or equal to a preset temperature difference value, the third upper computer controls the water pump of the temperature control adjusting device to be started to adjust the temperature difference of the battery.
Preferably, the third upper computer further includes:
the highest monomer temperature control module is used for controlling a cooling unit of the temperature control adjusting device to start to cool the battery when the highest monomer temperature is greater than or equal to a preset highest monomer temperature value;
and the lowest monomer temperature control module is used for controlling a heating unit of the temperature control adjusting device to be started for heating the battery when the lowest monomer temperature is less than or equal to a preset lowest monomer temperature value.
Preferably, each battery box is internally provided with a slave control acquisition board, and the battery management module is connected with each slave control acquisition board through a CAN bus.
Preferably, the first upper computer includes:
and the L ABVIEW module is used for obtaining the maximum cell voltage and the minimum cell voltage according to the received maximum cell voltage and the minimum cell voltage of each cell electric core, and respectively sending the maximum cell voltage and the minimum cell voltage to the charge and discharge machine.
Preferably, a total positive switch and a total negative switch are respectively arranged between the positive electrodes and the negative electrodes of the charging and discharging machine and the battery boxes after being connected in series so as to control the on-off of the circuit.
Preferably, the third upper computer is connected with the temperature control adjusting device through a 485 interface.
The invention provides a battery charge and discharge test system which comprises a plurality of battery boxes which are arranged in series, wherein a plurality of monomer battery cores are respectively arranged in each battery box; the battery management module is used for acquiring battery data of each single battery cell for calculation, obtaining a maximum voltage value and a minimum voltage value of each single battery cell and sending the maximum voltage value and the minimum voltage value to the first upper computer; the first upper computer is connected with the battery management module, obtains the maximum monomer voltage and the minimum monomer voltage according to the maximum monomer voltage value and the minimum monomer voltage value of each monomer battery cell, and sends the maximum monomer voltage and the minimum monomer voltage to the charge and discharge machine; the charging and discharging machine is connected with the second upper computer and sends the maximum monomer voltage and the minimum monomer voltage to the second upper computer; and the second upper computer controls the charging and discharging machine to control the charging of the battery by using the maximum single voltage and control the discharging of the battery by using the minimum single voltage.
By applying the battery charge and discharge test system provided by the invention, the battery management module acquires the battery data of each single battery cell and obtains the maximum voltage value and the minimum voltage value of each single battery cell through calculation, the first upper computer obtains the maximum voltage value and the minimum voltage value of each single battery cell according to the maximum voltage value and the minimum voltage value of each single battery cell and sends the maximum voltage value and the minimum voltage value of each single battery cell to the charge and discharge machine, the charge and discharge machine sends the maximum voltage value and the minimum voltage value of each single battery cell to the second upper computer, and the second upper computer controls the charge and discharge machine to control the charging and discharging. The system is simple in structure and convenient to set, the charging and discharging machine is controlled to charge and discharge through the second upper computer, the system is prevented from being overcharged and overdischarged, and the test safety of the battery cell is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a system schematic diagram of a battery charging and discharging test system according to an embodiment of the present invention.
The drawings are numbered as follows:
the device comprises a battery management module 1, a first upper computer 2, a third upper computer 3, a charge and discharge machine 4, a second upper computer 5 and a temperature control adjusting device 6.
Detailed Description
The embodiment of the invention discloses a battery charging and discharging test system, which aims to solve the problems of overcharge and overdischarge and low battery core test safety of the conventional battery charging and discharging test system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a system schematic diagram of a battery charging/discharging test system according to an embodiment of the present invention.
In a specific embodiment, the present invention provides a battery charge and discharge test system, comprising: the battery box comprises a plurality of battery boxes which are connected in series, a plurality of single battery cells are arranged in each battery box respectively, the number of the single battery cells can be set according to the bearing capacity of the battery box, and the single battery cells are detachably and fixedly connected with the battery boxes;
the battery management module 1 is respectively connected with each battery box, and the battery management module 1 is used for acquiring battery data of each single battery cell for calculation to obtain a maximum single voltage value and a minimum single voltage value of each single battery cell and sending the maximum single voltage value and the minimum single voltage value to the first upper computer 2; the battery box is internally provided with a collection slave control board, the collected battery data is sent to the battery management module 1 through the collection slave control board, the collection slave control board is connected with the battery management module 1 through a CAN bus, the battery management module 1 is mature existing equipment such as a battery management controller and the like, the specific structure and the connection relation with the collection slave control board CAN be set according to the prior art, and the detailed description is omitted;
the first upper computer 2 is connected with the battery management module 1, and the first upper computer 2 obtains the maximum monomer voltage and the minimum monomer voltage according to the maximum monomer voltage value and the minimum monomer voltage value of each monomer battery cell and sends the maximum monomer voltage and the minimum monomer voltage to the charge and discharge machine 4; the first upper computer 2 can be set as a display, a Personal Computer (PC) or a tablet personal computer and other devices, the maximum value and the minimum value of the monomer voltage of each monomer electric core sent by the battery management module 1 are processed by the first upper computer 2, the dead value is removed, if the battery management module 1 collects and calculates the monomer voltage information of a fixed quantity, if 10 battery boxes are collected, when only 6 battery boxes are set in the test system, the data of other 4 battery boxes are 0, the first upper computer 2 rejects the data of 0, calculates the maximum monomer voltage and the minimum monomer voltage of other battery boxes, and sends the maximum monomer voltage and the minimum monomer voltage to the charge and discharge machine 4. Wherein, the charge and discharge machine 4 is connected with the first upper computer 2 through a CAN bus.
The battery data are sent to a second upper computer 5 through a charge-discharge machine 4, the charge-discharge machine 4 is connected with the second upper computer 5, and the charge-discharge machine 4 sends the maximum cell voltage and the minimum cell voltage to the second upper computer 5; the second upper computer 5 is in communication connection with the charge and discharge machine 4 through a network port, the upper computer CAN be set as a display or a computer and other terminal equipment, and the upper computer loads the existing DBC file to translate data in the CAN bus;
and the second upper computer 5 controls the charging and discharging machine 4 to control the charging and discharging of the battery by the maximum single voltage and the minimum single voltage.
By applying the battery charging and discharging test system provided by the invention, the battery management module 1 acquires the battery data of each single battery cell and obtains the maximum value and the minimum value of the single voltage of each single battery cell through calculation, the first upper computer 2 obtains the maximum single voltage and the minimum single voltage according to the maximum value and the minimum value of the single voltage and sends the maximum single voltage and the minimum single voltage to the charging and discharging machine 4, the charging and discharging machine 4 sends the maximum single voltage and the minimum single voltage to the second upper computer 5, and the second upper computer 5 controls the charging and discharging machine 4 to control the charging of the battery through the maximum single voltage and control the discharging of the battery through the minimum single. The system is simple in structure and convenient to set, the charge and discharge machine 4 is controlled to charge and discharge through the second upper computer 5, the system is prevented from being overcharged and overdischarged, and the test safety of the battery cell is improved.
Specifically, the solar battery pack further comprises a third upper computer 3 which is respectively connected with the first upper computer 2 and a temperature control adjusting device 6, wherein the temperature control adjusting device 6 is respectively connected with the water cooling plates of the battery boxes;
the battery management module 1 obtains a single maximum temperature value and a single minimum temperature value of each single battery cell according to the collected battery data of each single battery cell, and sends the single maximum temperature value and the single minimum temperature value to the first upper computer 2;
the first upper computer 2 obtains the highest monomer temperature and the lowest monomer temperature according to the highest monomer temperature value and the lowest monomer temperature value of each monomer battery cell and sends the highest monomer temperature and the lowest monomer temperature to the third upper computer 3;
and when the difference value between the highest monomer temperature and the lowest monomer temperature is greater than or equal to the preset temperature difference value, the third upper computer 3 controls the water pump of the temperature control adjusting device 6 to be started to adjust the temperature difference of the battery.
Similarly, the third upper computer 3 can also be set as a PC, a display or a computer, the temperature control adjusting device 6 is respectively connected with the water cooling plates of the battery boxes, the temperature control adjusting device 6 comprises a cooling unit and a heating unit to refrigerate or heat a water source, the cooling unit and the heating unit are respectively connected with a switch valve, and the battery core is cooled or heated by controlling the opening of the switch valve. The battery management module 1 collects battery data of each single battery cell, the battery data comprises a maximum voltage value and a minimum voltage value of each single battery cell, a maximum temperature value and a minimum temperature value of each single battery cell, the first upper computer 2 processes according to the temperature information and the extreme value information to obtain a maximum voltage, a minimum voltage, a maximum temperature and a minimum temperature of each single battery cell, the first upper computer 2 respectively sends the temperature information and the extreme value information to the third upper computer 3 and the charging and discharging machine 4, the third upper computer 3 is connected with the first upper computer 2 through a CAN bus, the third upper computer 3 receives data through CANREAD calling dll function in a PEAKcan secondary development module and controls the on and off of a refrigerating unit and a heating device in the temperature control and regulation device 6 according to the maximum temperature and the minimum temperature of each single battery cell in the extreme value, particularly, when the difference value between the maximum temperature and the minimum temperature of each single battery cell is larger than or equal to a preset temperature difference value, 485 communication is carried out between the USB-485 communication module and the pwm generator, a water pump in the temperature control adjusting device 6 is controlled to be started to adjust the temperature difference of the battery, and when the highest monomer temperature is larger than or equal to a preset highest temperature value, the refrigerating unit is controlled to be started to carry out cooling; and when the lowest monomer temperature is less than or equal to a preset lowest temperature value, controlling the heating device to be started for cooling. The third upper computer 3 is connected with a temperature control adjusting device 6 to control according to the temperature of the water inlet and the water outlet, and the third upper computer 3 is connected with the temperature control adjusting device 6 through a USB-CAN interface. The third upper computer 3 controls the on-off of the temperature control adjusting device 6, so that the intelligent temperature control is realized.
Further, the third upper computer 3 further includes:
the highest monomer temperature control module is used for controlling a cooling unit of the temperature control adjusting device 6 to start to cool the battery when the highest monomer temperature is greater than or equal to a preset highest monomer temperature value;
the highest monomer temperature control module and the lowest monomer temperature control module can be respectively set to L ABVIEW modules to realize data comparison, and in other embodiments, the highest monomer temperature control module and the lowest monomer temperature control module can be set according to requirements as long as the same technical effect can be achieved.
In one embodiment, the first upper computer 2 includes:
l ABVIEW module, configured to obtain the maximum cell voltage and the minimum cell voltage according to the received maximum cell voltage value and the minimum cell voltage value of each cell electric core, and send the maximum cell voltage and the minimum cell voltage to the charge and discharge machine 4, respectively.
The NI-CAN module receives ID data, the ID corresponding to each collected slave control board is fixed, if the first collected slave control board corresponds to data in monomer cells ID0X550 and ID0X 551, and the temperature is data in ID0X 660, no measured object, namely other coded data except the 6 modules to be measured, the corresponding ID is certainly 0, then each monomer voltage and temperature data are obtained by contrasting a communication protocol, if the decimal number is directly obtained by corresponding data of two bits on the communication protocol, the decimal number is directly obtained, after all voltage data are obtained, the maximum and minimum monomer voltages are obtained from the maximum and minimum value obtaining instructions in an L ABVIEW module, the WRWRWR temperature and the minimum monomer temperature are obtained in the same manner, then a Peak-CAN secondary development module is used for calling a dll function CANITE module, and the data corresponding to the ID are written into a third upper computer 3 and a charge and discharge machine 4.
On the basis of the above embodiments, in order to improve the safety of the battery test, a total positive switch and a total negative switch are respectively arranged between the positive electrodes and the negative electrodes of the charging and discharging machine 4 and the battery boxes connected in series to control the on-off of the circuit. One end of the main positive switch is connected with the positive electrode after the battery boxes are connected in series, the other end of the main positive switch is connected with the charge-discharge machine 4, one end of the main negative switch is connected with the negative electrode after the battery boxes are connected in series, and the other end of the main negative switch is connected with the charge-discharge machine 4 so as to respectively control the on-off of the circuit.
Wherein, the third upper computer 3 and the temperature control adjusting device 6 are connected through a 485 interface.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
Claims (7)
1. A battery charge-discharge test system, comprising:
the battery box comprises a plurality of battery boxes which are connected in series, and a plurality of single battery cells are arranged in each battery box respectively;
the battery management module is used for acquiring battery data of each single battery cell for calculation, obtaining a maximum voltage value and a minimum voltage value of each single battery cell and sending the maximum voltage value and the minimum voltage value to the first upper computer;
the first upper computer is connected with the battery management module, obtains the maximum monomer voltage and the minimum monomer voltage according to the maximum monomer voltage value and the minimum monomer voltage value of each monomer battery cell, and sends the maximum monomer voltage and the minimum monomer voltage to the charge and discharge machine;
the charging and discharging machine is connected with a second upper computer and sends the maximum monomer voltage and the minimum monomer voltage to the second upper computer;
and the second upper computer controls the charge and discharge machine to control the charging of the battery by the maximum monomer voltage and control the discharging of the battery by the minimum monomer voltage.
2. The battery charge and discharge test system according to claim 1, further comprising a third upper computer connected to the first upper computer and the temperature control adjusting device, respectively, the temperature control adjusting device being connected to the water cooling plates of the respective battery boxes, respectively;
the battery management module obtains a single highest temperature value and a single lowest temperature value of each single battery cell according to the collected battery data of each single battery cell and sends the single highest temperature value and the single lowest temperature value to the first upper computer;
the first upper computer obtains the highest monomer temperature and the lowest monomer temperature according to the highest monomer temperature value and the lowest monomer temperature value of each monomer battery cell and sends the highest monomer temperature and the lowest monomer temperature to the third upper computer;
and when the difference value between the highest monomer temperature and the lowest monomer temperature is greater than or equal to a preset temperature difference value, the third upper computer controls the water pump of the temperature control adjusting device to be started to adjust the temperature difference of the battery.
3. The battery charge and discharge test system according to claim 2, wherein the third upper computer further comprises:
the highest monomer temperature control module is used for controlling a cooling unit of the temperature control adjusting device to start to cool the battery when the highest monomer temperature is greater than or equal to a preset highest monomer temperature value;
and the lowest monomer temperature control module is used for controlling a heating unit of the temperature control adjusting device to be started for heating the battery when the lowest monomer temperature is less than or equal to a preset lowest monomer temperature value.
4. The battery charge and discharge test system according to claim 1, wherein a slave control acquisition board is provided in each battery box, and the battery management module is connected to each slave control acquisition board through a CAN bus.
5. The battery charge and discharge test system of claim 1, wherein the first upper computer comprises:
and the L ABVIEW module is used for obtaining the maximum cell voltage and the minimum cell voltage according to the received maximum cell voltage and the minimum cell voltage of each cell electric core, and respectively sending the maximum cell voltage and the minimum cell voltage to the charge and discharge machine.
6. The battery charge and discharge testing system of any one of claims 1-5, wherein a total positive switch and a total negative switch are respectively arranged between the positive electrodes and the negative electrodes of the charge and discharge machine and the battery boxes after being connected in series to control the on-off of the circuit.
7. The battery charging and discharging test system according to claim 3, wherein the third upper computer is connected to the temperature control adjusting device via a 485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010448870.0A CN111458651A (en) | 2020-05-25 | 2020-05-25 | Battery charge-discharge test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010448870.0A CN111458651A (en) | 2020-05-25 | 2020-05-25 | Battery charge-discharge test system |
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| CN111458651A true CN111458651A (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114058A (en) * | 2021-11-15 | 2022-03-01 | 武汉长海高新技术有限公司 | Remote management method for power battery test |
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- 2020-05-25 CN CN202010448870.0A patent/CN111458651A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114058A (en) * | 2021-11-15 | 2022-03-01 | 武汉长海高新技术有限公司 | Remote management method for power battery test |
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