Tracing device for electric vehicle power battery detection equipment
By combining the load module and the voltage/current sampling module, the traceability and metrological verification of electric vehicle power battery testing equipment are realized, solving the problem of non-traceability of testing equipment and ensuring the accuracy and consistency of testing data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-06
AI Technical Summary
Existing electric vehicle power battery testing equipment has not undergone traceability and metrological calibration, resulting in the inability to verify the accuracy of test values and significant differences and deviations in test data.
A traceability device comprising a load module, a fuel meter, and a voltage/current sampling module is adopted. By consuming the electrical energy released by the electric vehicle power battery testing equipment, relevant parameters are collected and calculated to generate traceability results. These results are then compared with the equipment testing results to achieve automated traceability and metrological verification.
Without disassembling the vehicle or changing the control strategy, the accuracy of the testing equipment is verified to ensure consistency of testing data between different devices and avoid deviations between the test results and the actual state.
Smart Images
Figure CN223977344U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of traceability technology for electric vehicle testing equipment, specifically a traceability device for electric vehicle power battery testing equipment. Background Technology
[0002] With the transformation of the global energy structure and the increasing demand for environmental protection, electric vehicles, as an important means of green development, are rapidly gaining popularity worldwide due to their clean and efficient characteristics. As the core component of electric vehicles, the performance of the power battery directly affects the driving range, safety performance, and overall lifespan of the vehicle. However, with the increase in the number of electric vehicles and their age, the performance of power batteries faces significant challenges, such as insufficient driving range, the aftermarket for power batteries, and warranty issues, all of which constrain the development of electric vehicles.
[0003] Currently, numerous testing and maintenance services for electric vehicle (EV) power batteries have been proposed. However, the testing items, methods, and technical parameters used by major EV power battery manufacturers and testing institutions in China vary. Furthermore, the vast majority of EV power battery testing equipment lacks traceability and metrological calibration, making it impossible to verify the accuracy of its measurements. This results in significant discrepancies in test data between different EV power battery testing devices and large deviations between the measurement results and the actual state of the battery. Utility Model Content
[0004] In view of the above-described background technology, most existing electric vehicle power battery testing equipment has not undergone traceability and metrological calibration, resulting in the technical problem that the accuracy of the measured values of electric vehicle power battery testing equipment cannot be verified. In order to address this technical problem, this utility model proposes a traceability device for electric vehicle power battery testing equipment.
[0005] This invention enables the traceability and metrological verification of electric vehicle power battery testing equipment without disassembling the entire vehicle or changing the control strategy, thereby verifying the accuracy of the measured values and providing a unified standard for the test data between different electric vehicle power battery testing equipment, thus avoiding large deviations between the test results of electric vehicle power battery testing equipment and the actual state of the battery.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] This utility model discloses a traceability device for testing equipment of electric vehicle power batteries, comprising a load module, a fuel meter, and a voltage / current sampling module.
[0008] The load module is connected to the charging gun, which is connected to the electric vehicle power battery testing equipment. The charging gun charges the load module, and the load module consumes the electrical energy released by the electric vehicle power battery testing equipment during the traceability process.
[0009] The power meter is connected to the charging gun and is used to collect the power consumed by the load module;
[0010] The voltage / current sampling module is connected to the charging gun and is used to collect voltage and current data transmitted from the charging gun to the load module during the traceability process.
[0011] Furthermore, the fuel gauge is connected to the fast charging socket on the charging gun.
[0012] Furthermore, the traceability device for electric vehicle power battery testing equipment also includes a control module, wherein the fuel meter and voltage / current sampling module are both connected to the control module, and the control module is connected to the electric vehicle power battery testing equipment;
[0013] The charging amount collected by the fuel meter is the first charging amount, and the voltage data and current data collected by the voltage / current sampling module are the first voltage data and the first current data, respectively; the charging amount collected by the electric vehicle power battery testing device is the second charging amount, the voltage data collected by the electric vehicle power battery testing device is the second voltage data, and the current data collected by the electric vehicle power battery testing device is the second current data.
[0014] The control module is used to acquire first charge amount, first voltage data, first current data, second charge amount, second voltage data, and second current data, and compare the first charge amount with the second charge amount, the first voltage data with the second voltage data, and the first current data with the second current data to determine the accuracy of the data collected by the electric vehicle power battery testing equipment.
[0015] Furthermore, the traceability device for electric vehicle power battery testing equipment also includes a communication module, and the control module communicates with the electric vehicle power battery testing equipment through the communication module.
[0016] Furthermore, the traceability device for testing electric vehicle power batteries also includes a power supply module, which supplies power to the control module, communication module, fuel meter, and voltage / current sampling module.
[0017] Furthermore, the communication module is equipped with an OBD interface, and the communication module is also connected to an electric vehicle power battery testing device through the OBD interface. The electric vehicle power battery testing device obtains data packets from the on-board diagnostic system simulated by the control module through the OBD interface.
[0018] Furthermore, the load module is provided with a high-voltage port, and the load module is connected to the charging gun through the high-voltage port.
[0019] Furthermore, the traceability device for testing electric vehicle power batteries also includes a circuit board, on which the communication module, power supply module, control module, fuel gauge, and voltage / current sampling module are all integrated.
[0020] Furthermore, the traceability device for testing electric vehicle power batteries also includes an insulating housing, and the circuit board is placed inside the insulating housing.
[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0022] 1. This utility model discloses a traceability device for electric vehicle power battery testing equipment, comprising a load module, a fuel gauge, and a voltage / current sampling module. The load module consumes the electrical energy released by the electric vehicle power battery testing equipment during the traceability process; the fuel gauge collects the electrical energy consumed by the load module; and the voltage / current sampling module collects the voltage and current data transmitted from the charging gun to the load module during the traceability process. This utility model collects traceability-related parameters (charging amount, voltage data, and current data) through the fuel gauge and the voltage / current sampling module, and calculates traceability results based on these parameters. The traceability results are then compared with the testing results of the electric vehicle power battery testing equipment. This enables traceability and metrological verification of the electric vehicle power battery testing equipment without disassembling the entire vehicle or changing the control strategy, thereby verifying the accuracy of the measured values. This provides a unified standard for the testing data between different electric vehicle power battery testing equipment, avoiding significant deviations between the testing results of the electric vehicle power battery testing equipment and the actual state of the battery.
[0023] 2. This utility model provides a traceability device for electric vehicle power battery testing equipment, which further includes a control module. The control module calculates the data collected by the fuel meter and the voltage / current sampling module to generate traceability results; and compares the traceability results with the testing results of the electric vehicle power battery testing equipment, thereby realizing automated traceability of the electric vehicle power battery testing equipment.
[0024] 3. This utility model provides a traceability device for electric vehicle power battery testing equipment, which further includes a communication module. An OBD interface is provided on the communication module, and the data packets of the on-board diagnostic system simulated by the control module are obtained through the OBD interface. The communication module is used for data interaction during the traceability process. The control module can reproduce the behavior of the electric vehicle power battery under different operating conditions by adjusting the parameters of the on-board diagnostic system data packets, including changes in voltage, current, and temperature during the charging process, in order to determine the accuracy and qualification of the electric vehicle power battery testing equipment. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the traceability device for electric vehicle power battery testing equipment according to this utility model. Figure 1 ;
[0026] Figure 2 This is a schematic diagram of the traceability device for electric vehicle power battery testing equipment according to this utility model. Figure 2 . Detailed Implementation
[0027] The technical solution of this utility model will be further defined below with reference to the accompanying drawings and embodiments, but this utility model is not limited to the embodiments described below.
[0028] See Figure 1 and Figure 2 This utility model discloses a traceability device for electric vehicle power battery testing equipment, comprising a load module, a fuel gauge, and a voltage / current sampling module. The load module is connected to a charging gun, which is connected to the electric vehicle power battery testing equipment. The charging gun charges the load module, consuming the electrical energy released by the electric vehicle power battery testing equipment during the traceability process. The fuel gauge, connected to the charging gun, collects the electrical energy consumed by the load module. The voltage / current sampling module, also connected to the charging gun, collects the voltage and current data transmitted from the charging gun to the load module during the traceability process. Specifically, the charging amount collected by the fuel gauge and the voltage and current data collected by the voltage / current sampling module are used as standard data. The charging parameters of the charging gun collected by the electric vehicle power battery testing equipment are used as test data. The standard data and the test data are compared. This comparison can be performed manually or automatically by the control module described below, thereby achieving traceability and metrological verification of the electric vehicle power battery testing equipment. This invention enables the traceability and metrological verification of electric vehicle power battery testing equipment without disassembling the entire vehicle or changing the control strategy, thereby verifying the accuracy of the measured values and providing a unified standard for the test data between different electric vehicle power battery testing equipment, thus avoiding large deviations between the electric vehicle power battery testing equipment and the actual state of the battery.
[0029] In this invention, the power meter is connected to the fast charging socket on the charging gun.
[0030] This utility model's traceability device for electric vehicle power battery testing equipment also includes a control module. A fuel gauge and a voltage / current sampling module are both connected to the control module, which is in turn connected to the electric vehicle power battery testing equipment. The fuel gauge collects the first charging amount, and the voltage and current data collected by the voltage / current sampling module are the first voltage data and the first current data, respectively. The electric vehicle power battery testing equipment collects the second charging amount, the second voltage data, and the second current data. The control module acquires the first charging amount, the first voltage data, the first current data, the second charging amount, the second voltage data, and the second current data, and compares the first charging amount with the second charging amount, the first voltage data with the second voltage data, and the first current data with the second current data. In other words, the first charging amount, the first voltage data, and the first current data are used as standard data, and the second charging amount, the second voltage data, and the second current data are used as test data, thus determining the accuracy of the data collected by the electric vehicle power battery testing equipment. The control module in this invention is a technology known in the art. It is a control module of model STM32F407ZET6 manufactured by STMicroelectronics. The control software loaded on it is also a conventional technology known to those skilled in the art, used for comparing charging amount, current data and voltage data.
[0031] The traceability device for electric vehicle power battery testing equipment of this utility model also includes a communication module, and the control module is connected to the electric vehicle power battery testing equipment through the communication module. Preferably, the communication module in this utility model is a CAN communication module. In addition, it can also be a communication module known to those skilled in the art, and this utility model does not make a specific limitation.
[0032] The traceability device for electric vehicle power battery testing equipment of this utility model also includes a power supply module, which supplies power to the control module, communication module, fuel gauge, and voltage / current sampling module. Specifically, the power supply module can be electrically connected to the control module, communication module, fuel gauge, and voltage / current sampling module independently, and supply power to these modules independently; the power supply module can also be electrically connected to the control module, and the control module can be electrically connected to the communication module, fuel gauge, and voltage / current sampling module, meaning the power supply module supplies power to the control module independently, and the control module supplies power to the communication module, fuel gauge, and voltage / current sampling module.
[0033] In this invention, the communication module is equipped with an OBD interface. The communication module also connects to an electric vehicle power battery testing device via the OBD interface. The electric vehicle power battery testing device obtains data packets from the on-board diagnostic system simulated by the control module through the OBD interface. Through the OBD interface, the control module can reproduce the behavior of the electric vehicle's power battery under different operating conditions by adjusting the parameters of the on-board diagnostic system's data packets, including changes in voltage, current, and temperature during charging, thereby determining the accuracy and pass / fail status of the electric vehicle power battery testing device.
[0034] In this invention, the load module is provided with a high-voltage port, and the load module is connected to the charging gun through the high-voltage port.
[0035] The traceability device of this electric vehicle power battery testing equipment also includes a circuit board, on which the communication module, power supply module, control module, fuel meter and voltage / current sampling module are all integrated, improving the integration of the entire traceability device.
[0036] The traceability device for electric vehicle power battery testing equipment of this utility model also includes an insulating shell, and the circuit board is placed inside the insulating shell. The insulating shell protects the entire traceability device and the load module.
[0037] The electric vehicle battery testing equipment used in this invention is a Mode 4 fast-charging DC charging electric vehicle battery testing equipment.
[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A traceability device for an electric vehicle traction battery testing apparatus, characterized in that, The load module, the electric quantity meter and the voltage / current sampling module are connected with the charging gun. The load module is connected with the charging gun which is connected with the electric vehicle power battery detection device. The electric quantity meter is connected with the charging gun for collecting the electric quantity consumed by the load module. The voltage / current sampling module is connected with the charging gun for collecting the voltage data and the current data transmitted by the charging gun to the load module.
2. The traceability device for an electric vehicle traction battery testing apparatus according to claim 1, wherein, The electric quantity meter is connected with the fast charging female socket of the charging gun.
3. The traceability device for an electric vehicle traction battery testing apparatus of claim 1, wherein, The traceability device for the electric vehicle power battery detection device further comprises a control module, and the electric quantity meter and the voltage / current sampling module are connected with the control module. The electric quantity meter collects the first charging quantity, and the voltage / current sampling module collects the first voltage data and the first current data. The control module is used for obtaining the first charging quantity, the first voltage data, the first current data, the second charging quantity, the second voltage data and the second current data, comparing the first charging quantity with the second charging quantity, comparing the first voltage data with the second voltage data and comparing the first current data with the second current data, and determining the accuracy of the data collected by the electric vehicle power battery detection device.
4. The traceability device for an electric vehicle traction battery testing apparatus according to claim 3, wherein, The traceability device for the electric vehicle power battery detection device further comprises a communication module, and the control module is connected with the electric vehicle power battery detection device through the communication module.
5. A traceability device for an electric vehicle traction battery testing apparatus according to claim 4, wherein, The traceability device for the electric vehicle power battery detection device further comprises a power supply module.
6. A traceability device for an electric vehicle traction battery testing apparatus according to claim 5, wherein, The communication module is provided with an OBD interface, and the communication module is further connected with the electric vehicle power battery detection device through the OBD interface.
7. The traceability device for an electric vehicle traction battery testing apparatus of claim 1, wherein, The load module is provided with a high-voltage port, and the load module is connected with the charging gun through the high-voltage port.
8. The traceability device for an electric vehicle traction battery testing apparatus of claim 5, wherein, The traceability device for the electric vehicle power battery detection device further comprises a circuit board.
9. A traceability device for an electric vehicle traction battery testing apparatus according to claim 8, wherein, The traceability device for the electric vehicle power battery detection device further comprises an insulating shell, and the circuit board is arranged in the insulating shell.