Control system for battery testing

Abstract

The utility model relates to the technical field of battery testing, in particular to a control system for battery testing, which comprises an upper computer, a cooperative control unit, a middle computer and a monitoring background, and is characterized in that the upper computer is in communication connection with the cooperative control unit and the middle computer; the cooperative control unit is also in communication connection with an AC unit, and the output end of the AC unit is connected with a DC unit; the input end of the DC unit is connected with a battery, and the output end of the DC unit is connected with a control unit; the control unit is in communication connection with the middle computer and the monitoring background. According to the invention, high-efficiency and low-delay data transmission and accurate control can be realized, and a plurality of battery units can be ensured to quickly respond and realize parallel data processing in the test process.

Description

Technical Field

[0001] This application relates to the field of battery testing technology, and in particular to a control system for battery testing. Background Technology

[0002] The demand for lithium batteries is increasing dramatically in emerging high-end application fields such as automobiles, robotics, civilian drones, and aerospace. These applications are constantly demanding more precise specifications for battery performance indicators such as range and performance estimation. Therefore, the performance of battery testing equipment, especially the data acquisition, processing, and response speed in large-scale testing, has become particularly important.

[0003] Current battery testing devices generally employ traditional control units and data acquisition methods. These devices have limitations in data acquisition accuracy, real-time response, and multi-unit parallel testing. Especially during testing, data from multiple battery units needs to be transmitted rapidly and processed accurately, and the existing communication methods and hardware architecture are insufficient to meet the demands for rapid response and data feedback. Traditional battery testing equipment, when multiple units are connected, suffers from slow communication speeds and a lack of flexible real-time monitoring and control methods, resulting in long response times and low testing efficiency. Utility Model Content

[0004] To achieve efficient, low-latency data transmission and precise control, ensuring rapid response and parallel data processing across multiple battery cells during testing, this application provides a control system for battery testing. The technical solution provided in this application is as follows:

[0005] A control system for battery testing includes a host computer, a co-control unit, a mid-level computer, and a monitoring backend. The host computer is communicatively connected to both the co-control unit and the mid-level computer. The co-control unit is also communicatively connected to an AC unit, and the output terminals of the AC units are all connected to DC units. The input terminals of the DC units are connected to the battery, and the output terminals of the DC units are connected to the control unit. The control unit is communicatively connected to both the mid-level computer and the monitoring backend.

[0006] In one specific implementation scheme, the co-control unit is provided with a first CAN communication interface, and the AC unit is provided with a third CAN communication interface, with the first CAN communication interface connected to the third CAN communication interface.

[0007] In one specific implementation scheme, the co-control unit is provided with a first Modbus communication interface, and the AC unit is provided with a second Modbus communication interface, with the first Modbus communication interface connected to the second Modbus communication interface.

[0008] In one specific implementation scheme, the co-control unit is provided with a second CAN communication interface, which is connected to the host computer.

[0009] In one specific implementation scheme, the control unit is provided with a third Modbus communication interface, which is connected to the monitoring backend.

[0010] In one specific implementation scheme, the control unit is provided with a fourth CAN communication interface, which is connected to the host computer.

[0011] In one specific implementation, the co-control unit is communicatively connected to several AC units, the output of each AC unit is connected to several DC units, and the input of each DC unit is connected to two batteries.

[0012] In summary, the beneficial effects of this application include at least the following:

[0013] 1) By adopting dual communication interfaces of CAN and Modbus, the system can achieve high-speed, low-latency data transmission, ensuring more efficient data exchange between the host computer, co-control unit, AC unit, DC unit and control unit, greatly improving the system's real-time response capability and data processing accuracy.

[0014] 2) Through a multi-level control and communication architecture, the system can manage multiple DC units and batteries simultaneously, improving the efficiency of parallel testing. Each unit can be tested independently and quickly provide data feedback, greatly enhancing the parallelism and overall efficiency of battery testing, and solving the problems of data transmission and control response lag in traditional equipment during multi-unit testing.

[0015] By employing multiple communication interfaces and control units in a coordinated manner, the shortcomings of existing battery testing devices in data acquisition accuracy, real-time response, and multi-unit parallel testing are addressed. The system comprises a host computer, a co-control unit, an AC unit, a DC unit, and a control unit. The host computer and the co-control unit are connected via a CAN communication interface. The co-control unit and the AC unit are connected via both CAN and Modbus communication interfaces. The AC unit is connected to multiple DC units, and the DC units are connected to the battery. The control unit is connected to a mid-level computer and a monitoring backend via CAN and Modbus communication interfaces, respectively. This multi-interface, multi-level communication architecture enables efficient, low-latency data transmission and precise control, ensuring rapid response and parallel data processing for multiple battery units during testing. This improves testing efficiency and accuracy, resolving the problems of slow communication speed, long response time, and lack of flexible real-time monitoring and control found in existing equipment.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the control system used for battery testing in this embodiment. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0020] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] This application discloses a control system for battery testing.

[0023] Reference Figure 1The control system for battery testing includes a host computer, a co-control unit, and a mid-level computer. The host computer communicates with both the co-control unit and the mid-level computer. The co-control unit is equipped with a first CAN communication interface, a second CAN communication interface, and a first Modbus communication interface. The co-control unit communicates with the host computer through the second CAN communication interface. The co-control unit also communicates with several AC units. Each AC unit is equipped with a second Modbus communication interface and a third CAN communication interface. The first CAN communication interface of the co-control unit is connected to the third CAN communication interface of each AC unit, and the first Modbus communication interface of the co-control unit is connected to the second Modbus communication interface of each AC unit, thereby completing the communication connection between the co-control unit and the several AC units.

[0024] In implementation, the host computer and the co-control unit are connected via a second CAN communication interface, facilitating data exchange between the host computer and the co-control unit using the efficient, low-latency CAN communication protocol. The host computer can receive and send control commands in real time and monitor system status. The co-control unit connects to multiple AC units via two communication methods: CAN communication interface and Modbus communication interface. It connects to the third CAN communication interface of each AC unit via the first CAN communication interface, enabling efficient, real-time device data exchange and control command issuance. The first Modbus communication interface connects to the second Modbus communication interface of each AC unit for stable data transmission and battery status monitoring and control operations (such as voltage and current regulation).

[0025] Reference Figure 1 Each AC unit's output is connected to several DC units. Each DC unit's input is connected to two batteries, and its output is connected to a control unit. The control unit has a third Modbus communication interface and a fourth CAN communication interface. Each control unit communicates with the central computer via the fourth CAN communication interface. Each control unit also communicates with the monitoring backend via the third Modbus communication interface. The AC unit provides power or control signals to the DC units to manage battery charging and discharging. Each AC unit can connect to multiple DC units, ensuring the system can simultaneously handle the status of multiple batteries or battery packs. The control unit's communication with the central computer via the fourth CAN interface enables fast, low-latency data transmission. This means the control unit can transmit battery data (such as voltage, current, and status) to the central computer in real time for processing or further decision-making. The control unit also connects to the monitoring backend via the third Modbus communication interface for data transmission and monitoring. Through the third Modbus communication interface, the monitoring backend can view various data during the battery testing process in real time, performing monitoring, alarm, and recording operations.

[0026] It should be noted that the CAN communication interface in this application is a hardware module, including a CAN controller chip, related circuits, and pin interfaces, used for data transmission between devices and supporting data exchange via the CAN protocol. This interface communicates with devices such as host computers, co-control units, and AC units via electrical connections. The Modbus communication interface is a hardware interface, including a serial communication interface (such as an RS-485 interface), used for exchanging data with other devices and supporting data transmission via the Modbus protocol. This interface is directly connected to devices such as control units and monitoring backends to ensure stable data transmission.

[0027] Furthermore, the control unit in this application is an integrated circuit module, including a processor, memory, and communication interfaces (such as Modbus and CAN communication interfaces), used to receive control commands, collect data, and process it during battery testing. The co-control unit is also a hardware module, integrating multiple communication interfaces for coordinating and managing data exchange and command transmission between different devices. Optionally, both the control unit and the co-control unit in this application are PCB boards. The AC unit is a hardware module, including a power regulation circuit, a signal processing module, control interfaces (such as Modbus and CAN interfaces), and a battery management circuit. The DC unit is a hardware module, with an input port (for receiving battery power input) and an output port (for outputting power to the control unit). The monitoring backend is a hardware system, including a computer equipped with a central processing unit (CPU), memory, hard disk storage, a display, and a network interface. This system interacts with the control unit via the Modbus communication interface, receives various data during the battery testing process in real time, and visualizes the data on the display, allowing users to monitor the battery status and testing process in real time.

[0028] In summary, by utilizing the collaborative work of multiple communication interfaces and control units, the shortcomings of existing battery testing devices in terms of data acquisition accuracy, real-time response, and multi-unit parallel testing are resolved. The system includes a host computer, a co-control unit, an AC unit, a DC unit, and a control unit. The host computer and the co-control unit are connected via a CAN communication interface; the co-control unit and the AC unit are connected via both CAN and Modbus communication interfaces; the AC unit is connected to multiple DC units; the DC units are connected to the battery; and the control unit is connected to a mid-level computer and a monitoring backend via CAN and Modbus communication interfaces, respectively. Through this multi-interface, multi-level communication architecture, the system achieves efficient, low-latency data transmission and precise control, ensuring that multiple battery units can respond quickly and perform parallel data processing during testing, thereby improving testing efficiency and accuracy and solving the problems of slow communication speed, long response time, and lack of flexible real-time monitoring and control in existing equipment.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A control system for battery testing, characterized in that, The system includes a host computer, a co-control unit, a mid-level computer, and a monitoring backend. The host computer is communicatively connected to the co-control unit and the mid-level computer. The co-control unit is also communicatively connected to an AC unit, and the output of each AC unit is connected to a DC unit. The input of each DC unit is connected to a battery, and the output of each DC unit is connected to a control unit. The control unit is communicatively connected to the mid-level computer and the monitoring backend.

2. The control system for battery testing according to claim 1, characterized in that, The co-control unit is provided with a first CAN communication interface, and the AC unit is provided with a third CAN communication interface. The first CAN communication interface is connected to the third CAN communication interface.

3. The control system for battery testing according to claim 1, characterized in that, The co-control unit is provided with a first Modbus communication interface, and the AC unit is provided with a second Modbus communication interface. The first Modbus communication interface is connected to the second Modbus communication interface.

4. The control system for battery testing according to claim 1, characterized in that, The co-control unit is equipped with a second CAN communication interface, which is connected to the host computer.

5. The control system for battery testing according to claim 1, characterized in that, The control unit is equipped with a third Modbus communication interface, which is connected to the monitoring backend.

6. The control system for battery testing according to claim 1, characterized in that, The control unit is equipped with a fourth CAN communication interface, which is connected to the host computer.

7. The control system for battery testing according to claim 1, characterized in that, The co-control unit is communicatively connected to several AC units, the output of each AC unit is connected to several DC units, and the input of each DC unit is connected to two batteries.

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