CN212569069U - Research and test equipment for power battery - Google Patents
Research and test equipment for power battery Download PDFInfo
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- CN212569069U CN212569069U CN202021398806.8U CN202021398806U CN212569069U CN 212569069 U CN212569069 U CN 212569069U CN 202021398806 U CN202021398806 U CN 202021398806U CN 212569069 U CN212569069 U CN 212569069U
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Abstract
A power battery research test device is used for testing battery management system strategies. It includes: a main controller; the BMU controller is used for acquiring voltage and temperature data of each single battery in the battery system and uploading the voltage and temperature data to the main controller in a CAN (controller area network) communication mode; a battery system; the configuration screen is used for displaying the voltage of a single battery, the temperature of the single battery, the voltage of a battery pack, the charging and discharging current, the SOC and the equilibrium state in the battery system; and the charging and discharging system is used for realizing charging and discharging of the battery system. The utility model provides a pair of power battery research test equipment, main control unit interface are abundant, can carry out MATLAB code generation verification, can gather each battery cell's voltage, temperature, are favorable to the accurate nature that SOC calculated, and whole equipment is small, the function is perfect, the battery management system's of being convenient for study and development.
Description
Technical Field
The utility model belongs to the technical field of the power battery management technique and specifically relates to a power battery research test equipment.
Background
The power battery management test research equipment can be used for testing the feasibility of a battery management system strategy and testing a battery charge-discharge balancing method, and can be used for teaching test equipment for power battery research. The existing power battery testing system and method tests the charge and discharge performance of the battery by changing the ambient temperature of the power battery, has single function and higher equipment cost, still cannot get rid of the scheme of original factory equipment, has large equipment and extremely high cost, and can only be used for testing the original factory equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a power battery research test equipment with low costs for test battery management system strategy.
The utility model provides a technical scheme that its technical problem adopted is: a power battery research test equipment is characterized by comprising:
a main controller;
the BMU controller is used for acquiring voltage and temperature data of each single battery in the battery system and uploading the voltage and temperature data to the main controller in a CAN (controller area network) communication mode;
a battery system;
the configuration screen is used for displaying the voltage of a single battery, the temperature of the single battery, the voltage of a battery pack, the charging and discharging current, the SOC and the equilibrium state in the battery system;
and the charging and discharging system is used for realizing charging and discharging of the battery system.
Furthermore, a CAN communication circuit, a total positive and negative relay, a fan controller and a heating controller are arranged in the main controller, the voltage detection circuit, the current detection circuit, 485 communication circuit and battery management system, CAN communication circuit is used for realizing main control unit and BMU controller, main control unit is connected with the communication of charge-discharge system, main control unit is through always positive total negative relay control battery system's operating condition, main control unit passes through fan controller control battery system's in radiator fan's operating condition, main control unit passes through the operating condition of heating controller control monomer battery heating film, main control unit passes through the current detection circuit and detects the electric current of charging relay output among the charge-discharge system, main control unit passes through the voltage detection circuit and detects the voltage of charging relay output among the charge-discharge system, main control unit passes through 485 communication circuit and is connected with the configuration screen.
Furthermore, a single battery voltage detection circuit, a single battery temperature acquisition circuit, a CAN communication circuit and a passive equalization circuit are arranged in the BMU controller, the single battery voltage detection circuit is used for detecting the voltage of the single battery, the single battery temperature acquisition circuit is used for acquiring the temperature of the single battery, the CAN communication circuit is used for realizing the communication connection between the BMU controller and the main controller, and the passive equalization circuit is used for realizing the equalization adjustment of the voltage of each single battery.
Further, the battery system comprises 18650 series single batteries, a voltage sampling circuit, a temperature sensor, a cooling fan, a single battery heating film, a total positive total negative relay and a voltage and current acquisition circuit, the single battery heating film is used for keeping battery activity in a low-temperature state, the cooling fan is used for cooling a battery pack, the temperature sensor is used for realizing real-time temperature detection of the single batteries, the positive and negative poles of each single battery are led out by each single battery voltage sampling circuit and connected to the analog signal acquisition circuit of the BMU controller, and the accurate voltage of each single battery is acquired and read by a high-precision ADC in the analog signal acquisition circuit of the BMU controller.
Further, the charging and discharging system comprises a charging relay, a CAN communication circuit, a DC conversion circuit and a discharging load, wherein the DC conversion circuit is used for realizing the conversion between direct current and alternating current, the CAN communication circuit is used for realizing the connection between the charging and discharging system and the main controller, the charging relay is used for charging the battery system, and the discharging load is used for realizing the discharging of the battery system.
The utility model has the advantages that: the utility model provides a pair of power battery research test equipment, main control unit interface are abundant, can carry out MATLAB code generation verification, can gather each battery cell's voltage, temperature, are favorable to the accurate nature that SOC calculated, and whole equipment is small, the function is perfect, the battery management system's of being convenient for study and development.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the main controller;
FIG. 3 is a data message displayed on a configuration screen;
FIG. 4 is a schematic view of a charge/discharge system;
FIG. 5 is a schematic structural view of a battery system;
fig. 6 is a schematic structural diagram of a BMU controller.
Detailed Description
As shown in fig. 1 to fig. 6, the present invention mainly includes a main controller, a BMU controller, a battery system, a configuration screen, and a charging/discharging system, and the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the battery system is connected to the BMU controller, and the BMU controller collects data (voltage and temperature) of the battery system and then transmits the data by connecting to the main controller through the CAN communication circuit. Be equipped with battery cell voltage detection circuit, battery cell temperature acquisition circuit, CAN communication circuit and passive equalizer circuit in the BMU controller, battery cell voltage detection circuit is used for detecting battery cell voltage, battery cell temperature acquisition circuit is used for gathering battery cell's temperature, CAN communication circuit is used for realizing that the BMU controller is connected with main control unit's communication, passive equalizer circuit is used for realizing the balanced regulation to each battery cell voltage. The BMU controller is used for collecting voltage and temperature data of each single battery in the battery system and uploading the voltage and temperature data to the main controller in a CAN communication circuit mode. When the equipment is charged, the BMU controller balances the condition of larger battery voltage difference according to the acquired voltage data, reduces the voltage difference among the single batteries and ensures that the voltages of the single batteries are basically consistent. The safety and the service life of the battery system are ensured.
The main controller is connected with the charge and discharge system, receives charge CAN information of the charge and discharge system, and controls the charge and discharge system to charge and discharge. And a battery management system is arranged in the main controller, and during charging, the battery management system adopts passive equalizing charging according to the voltage of each single battery and calculates the SOC through an algorithm.
The main controller is connected with the BMU controller through the CAN communication circuit, receives data (voltage and temperature) transmitted by the BMU controller, processes the data, calculates the SOC, and sends the data to the configuration screen through the 485 communication circuit for displaying. The main controller receives data transmitted by the charging and discharging system, controls the total positive and negative relays of the battery system and controls the charging relays. The main controller is internally provided with a CAN communication circuit, a total positive and total negative relay, a fan controller, a heating controller, a voltage detection circuit, a current detection circuit, a 485 communication circuit and a battery management system, wherein the CAN communication circuit is used for realizing the communication connection between the main controller and the BMU controller as well as between the main controller and a charging and discharging system. The main controller controls the working state of the battery system through the total positive and total negative relays, controls the working state of a cooling fan in the battery system through the fan controller, controls the working state of the heating film of the single battery through the heating controller, detects the current output by the charging relays in the charge and discharge system through the current detection circuit, and detects the voltage output by the charging relays in the charge and discharge system through the voltage detection circuit. The main controller is connected with the configuration screen through a 485 communication circuit. This is all there is the structure on the current car, selects total positive total negative relay according to battery system's voltage electric current parameter, imitates new energy automobile inner structure, and this total positive total negative relay is by main control unit direct control, and when equipment carries out the relevant operation of charging and discharging, total positive total negative relay can be closed to guarantee the normal of electric current and pass through. When charging or discharging is not needed, the total positive and negative relays are disconnected, and current cannot flow out. And the total positive and total negative relays can be disconnected when a fault occurs according to certain faults so as to ensure the safety of the battery and the electric equipment.
As shown in fig. 3, the configuration screen is used for displaying the voltage of the single battery, the temperature of the single battery, the voltage of the battery pack, the charge and discharge current, the SOC and the equilibrium state, so as to facilitate observation.
As shown in fig. 5, the battery system includes 18650 series single batteries, a voltage sampling circuit, a temperature sensor, a cooling fan, a single battery heating film, a total positive and negative relay, and a voltage and current collecting circuit. The single cell heating film is used for maintaining the activity of the battery in a low temperature state. The battery pack comprises a battery pack, a heat radiation fan, a temperature sensor, a voltage acquisition circuit, a current acquisition circuit and a power supply circuit, wherein the heat radiation fan is used for radiating heat of the battery pack, the temperature sensor is used for realizing real-time temperature detection of a single battery, the voltage acquisition circuit acquires output voltage of a battery system, and the current acquisition circuit acquires output current of the battery system; the voltage part is acquired by adopting large resistance to divide voltage, has low power consumption and is directly connected to the main controller through a voltage follower circuit; the current collection part adopts a low-resistance sampling resistor, a high-precision differential operational amplifier circuit is used for collecting voltage of the sampling resistor, the output is connected to the main controller, and the current of the main controller can be calculated through the ohm law. And the positive and negative poles of each single battery are led out by each single battery voltage sampling circuit and are connected to the BMU controller analog signal acquisition circuit, and the accurate voltage of each single battery is acquired and read by a high-precision ADC in the BMU controller analog signal acquisition circuit.
As shown in fig. 4, the charge and discharge system includes a charge relay, a CAN communication circuit, a DC conversion circuit and a discharge load, the DC conversion circuit is used to realize the conversion between the direct current and the alternating current, the CAN communication circuit is used to realize the connection between the charge and discharge system and the main controller, and the charge relay is used to charge the battery system. When the equipment is charged, the main controller collects charging data transmitted by the BMU controller, and a charging relay of a charging and discharging system is closed when the battery is fully charged. When the system of the whole equipment runs, the voltage of each single battery, the temperature of each single battery, the passive equilibrium state of each single battery, the voltage of a battery pack and the total current are displayed on a configuration screen.
Claims (5)
1. A power battery research test equipment is characterized by comprising:
a main controller;
the BMU controller is used for acquiring voltage and temperature data of each single battery in the battery system and uploading the voltage and temperature data to the main controller in a CAN (controller area network) communication mode;
a battery system;
the configuration screen is used for displaying the voltage of a single battery, the temperature of the single battery, the voltage of a battery pack, the charging and discharging current, the SOC and the equilibrium state in the battery system;
and the charging and discharging system is used for realizing charging and discharging of the battery system.
2. The device as claimed in claim 1, wherein the main controller is provided with a CAN communication circuit, a total positive total negative relay, a fan controller, a heating controller, a voltage detection circuit, a current detection circuit, a 485 communication circuit and a battery management system, the CAN communication circuit is used for realizing the communication connection between the main controller and the BMU controller, the main controller and the charging and discharging system, the main controller controls the working state of the battery system through the total positive total negative relay, the main controller controls the working state of a heat dissipation fan in the battery system through the fan controller, the main controller controls the working state of the heating film of the single battery through the heating controller, the main controller detects the current output by the charging relay in the charging and discharging system through the current detection circuit, and the main controller detects the voltage output by the charging relay in the charging and discharging system through the voltage detection circuit, the main controller is connected with the configuration screen through a 485 communication circuit.
3. The device as claimed in claim 1, wherein a cell voltage detection circuit, a cell temperature acquisition circuit, a CAN communication circuit and a passive equalization circuit are disposed in the BMU controller, the cell voltage detection circuit is used for detecting the cell voltage, the cell temperature acquisition circuit is used for acquiring the temperature of the cell, the CAN communication circuit is used for realizing the communication connection between the BMU controller and the main controller, and the passive equalization circuit is used for realizing the equalization adjustment of the cell voltage.
4. The power battery research and test device as claimed in claim 1, wherein the battery system comprises 18650 series of single batteries, a voltage sampling circuit, a temperature sensor, a cooling fan, a single battery heating film, a total positive total negative relay and a voltage and current acquisition circuit, the single battery heating film is used for keeping battery activity in a low temperature state, the cooling fan is used for cooling the battery pack, the temperature sensor is used for detecting the temperature of the single batteries in real time, the positive and negative poles of each single battery are led out by each single battery voltage sampling circuit and connected to the BMU controller analog signal acquisition circuit, and the accurate voltage of each single battery is acquired and read by a high-precision ADC in the BMU controller analog signal acquisition circuit.
5. The device as claimed in claim 1, wherein the charging and discharging system comprises a charging relay, a CAN communication circuit, a DC conversion circuit and a discharging load, the DC conversion circuit is used for converting between direct current and alternating current, the CAN communication circuit is used for connecting the charging and discharging system with the main controller, the charging relay is used for charging the battery system, and the discharging load is used for discharging the battery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021398806.8U CN212569069U (en) | 2020-07-15 | 2020-07-15 | Research and test equipment for power battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021398806.8U CN212569069U (en) | 2020-07-15 | 2020-07-15 | Research and test equipment for power battery |
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| CN212569069U true CN212569069U (en) | 2021-02-19 |
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| CN202021398806.8U Active CN212569069U (en) | 2020-07-15 | 2020-07-15 | Research and test equipment for power battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117406125A (en) * | 2023-12-15 | 2024-01-16 | 山东派蒙机电技术有限公司 | Battery health state confirmation method, device, equipment and storage medium |
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2020
- 2020-07-15 CN CN202021398806.8U patent/CN212569069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117406125A (en) * | 2023-12-15 | 2024-01-16 | 山东派蒙机电技术有限公司 | Battery health state confirmation method, device, equipment and storage medium |
| CN117406125B (en) * | 2023-12-15 | 2024-02-23 | 山东派蒙机电技术有限公司 | Battery health state confirmation method, device, equipment and storage medium |
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