Temperature sampling device, battery management system, and battery device

Abstract

The invention relates to a temperature sampling device, a battery management system, and a battery device. The temperature sampling device comprises a sampling module (10) connected to a cell (30) of a battery module (40) and configured to collect temperature information and a first potential signal of the cell (30), and a control module (20) connected to the sampling module (10) and configured to determine whether the position of the sampling module (10) is a preset position based on the first potential signal of the cell (30). The invention relates to a technical solution that collects temperature information and a first potential signal of the cell by providing a sampling module, and further determines whether the position of the sampling module is a preset position using the control module, thereby improving the accuracy of the temperature information collected by the temperature sampling device.

Description

Technical Field

[0001] This application claims priority to a Chinese patent application with application number 202420056374.4 filed with the Chinese Patent Office on January 9, 2024, and incorporates all the content of the above application by reference into this application.

[0002] This application relates to the technical field of batteries, for example, a temperature acquisition device, a battery management system, and a battery device.

Background Art

[0003] Inside a battery module, usually, a temperature acquisition device for acquiring the temperature of the battery module is arranged, and the temperature of the battery module can be used for the analysis and adjustment of the performance of the battery module.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the temperature acquisition device in the related art, the arrangement position often does not match the specified position, so it is difficult for the temperature acquisition device to effectively reflect the true temperature of the battery, which affects the usage performance of the battery.

Means for Solving the Problems

[0005] In aspect 1, this application A collection module connected to the cells of the battery module and configured to collect the temperature information and the first potential signal of the cells; A control module connected to the collection module and configured to determine whether the position of the collection module is a preset position based on the first potential signal of the cells. A temperature acquisition device is provided.

[0006] In aspect 2, this application Comprising the temperature acquisition device according to any one of the preceding claims. ​​​ In embodiment 3, the present application is: Equipped with a battery management system and battery module, We provide a battery device. [Effects of the Invention]

[0008] The temperature sampling device of the present invention comprises a sampling module and a control module. The sampling module is configured to be connected to the cells of a battery module, and the control module is connected to the sampling module. The sampling module is further configured to collect temperature information and a first potential signal of the cells, and the control module is configured to determine whether the position of the sampling module is a preset position based on the first potential signal of the cells. The temperature sampling device of the present invention collects temperature information and a first potential signal of the cells using the sampling module, and further determines whether the position of the sampling module is a preset position using the control module, thereby improving the accuracy of the temperature information collected by the temperature sampling device. [Brief explanation of the drawing]

[0009] [Figure 1A] This is a schematic diagram of the structure of a temperature sampling device according to several realization forms of the present invention. [Figure 1B] This is a schematic diagram illustrating the structure of the connection between a temperature sampling device and a battery module according to several realization embodiments of the present invention. [Figure 2] This is a schematic diagram of the structure of another temperature sampling device relating to several realization forms of the present invention. [Figure 3] This is a schematic diagram of the structure of a battery management system according to several realization forms of the present invention. [Figure 4] This is a schematic diagram of the structure of a battery device relating to several realization forms of the present invention. [Modes for carrying out the invention]

[0010] The terms “First,” “Second,” etc., in the specification, claims, and drawings of this application are for distinguishing similar subjects and are not intended to describe a specific order or priority. It should be understood that the data used in this manner may be interchangeable with each other where appropriate, so that the embodiments of this application described herein may be carried out in an order other than that illustrated or described herein. Furthermore, the terms “includes” and “have,” and any variations thereof, are intended to cover non-exclusive inclusion, for example, including a series of steps or units of processes, methods, systems, products, or equipment shown in the embodiments of this application, as well as other processes, methods, systems, products, or equipment of a series of steps or units not explicitly described herein, or other steps or units specific to those processes, methods, products, or equipment.

[0011] Figure 1A is a schematic diagram of the structure of a temperature sampling device according to an embodiment of the present application, and Figure 1B is a schematic diagram of the structure of the connection between the temperature sampling device and the battery module according to an embodiment of the present application. Referring to Figures 1A and 1B, the temperature sampling device according to an embodiment of the present application includes a sampling module 10, which is configured to be connected to a cell 30 of a battery module 40, and the sampling module 10 is further configured to collect temperature information and a first potential signal of the cell 30. It also includes a control module 20, which is connected to the sampling module 10, and the control module 20 is configured to determine whether the position of the sampling module 10 is a preset position based on the first potential signal of the cell 30.

[0012] The temperature sampling device is configured to collect temperature information from the cells 30 of the battery module 40. The temperature sampling device is connected to the cells 30 by a sampling module 10, which collects temperature information and a first potential signal of the cell's location and can output the temperature information and the first potential signal to the control module 20. The control module 20 is connected to the sampling module 10 and can determine whether the position of the sampling module 10 is a preset position based on the first potential signal of the cell 30. For example, it can determine the voltage value of the cell 30 connected to the sampling module 10 based on the first potential signal and determine whether the position of the sampling module 10 is a preset position based on the comparison result between the voltage value of the cell 30 and the preset value. If the position of the sampling module 10 is a preset position, the control module 20 can determine that the temperature information of the cell 30 is the temperature information of the preset position and can be used to adjust the performance of the battery module 40.

[0013] For example, when the sampling module 10 is connected to the battery module 40, the sampling module 10 collects temperature information and a first potential signal indicating the location of the cell 30, and outputs the temperature information and the first potential signal to the control module 20. Based on the first potential signal, the control module 20 determines the voltage value of the cell 30 connected to the module 10, and determines whether the position of the sampling module 10 is a preset position based on the comparison result between the voltage value of the cell 30 and a preset value. If the position of the sampling module 10 is a preset position, the control module 20 determines that the temperature information of the cell 30 is the temperature information of the preset position, and adjusts the performance of the battery module 40 based on the temperature information of the cell 30.

[0014] The temperature sampling device according to the embodiment of the present invention includes a sampling module 10 and a control module 20, which determine the first potential signal of the sampled cell 30 and confirm whether the position of the sampling module 10 is a preset position. As a result, the control module 20 can adjust the performance of the battery module 40 based on the temperature information of the cell 30 at the preset position, thereby improving the accuracy of temperature information sampling by the temperature sampling device.

[0015] Preferably, Figure 2 is a schematic diagram of the structure of another temperature sampling device according to an embodiment of the present application. Referring to Figure 2, the sampling module 10 further comprises at least one first sampling unit 11, the first sampling unit 11 being connected to the cell 30 of the battery module 40 and the control module 20, and the first sampling unit 11 being configured to sample temperature information and a first potential signal of the cell 30. Here, the battery module 40 comprises at least one cell 30.

[0016] The sampling module 10 may include a plurality of first sampling units 11 for connection to the battery module 40. If the battery module 40 includes a plurality of cells 30 connected in series, the sampling module 10 can be connected to each of the plurality of cells 30 by one or more first sampling units 11. Each first sampling unit 11 can collect temperature information and a first potential signal of the connected cell 30, and furthermore, the control module 20 determines whether the connection position of each first sampling unit 11 is a preset position. Such an installation can improve the accuracy of temperature information collection by the temperature sampling device.

[0017] Preferably, continuing to refer to FIG. 2, the first sampling unit 11 includes a first resistor R1 and a sampling probe 12. The first end of the first resistor R1 is connected to the first end of the cell 30, the second end of the first resistor R1 is connected to the second end of the cell 30, the first resistor R1 may be a thermistor, and the interface end of the first resistor R1 is connected to the control module 20, for example, via a Battery Management System (BMS). The first resistor R1 is configured to collect the temperature information of the cell 30. The first end of the sampling probe 12 is connected to the cell 30, the second end of the sampling probe 12 is connected to the control module 20, and the sampling probe 12 is configured to collect the first potential signal of the cell 30.

[0018] The first sampling unit 11 obtains the temperature information of the cell 30 through the first resistor R1. Both ends of the first resistor R1 are respectively connected to the positive and negative electrodes of the cell 30, and the temperature information of the cell 30 connected to the first resistor R1 is collected. The sampling probe 12 is connected between the control module 20 and the cell 30. The sampling probe 12 can collect the first potential signal of the cell 30 and output it to the control module 20. Furthermore, the control module 20 determines whether the position of the first sampling unit 11 is at a preset position.

[0019] Preferably, continuing to refer to FIG. 2, the control module 20 includes an acquisition unit 21 and a comparison unit 22. The acquisition unit 21 is connected to the first resistor R1 and the sampling probe 12. The acquisition unit 21 is configured to acquire the temperature information and the first potential signal. The acquisition unit 21 is further configured to determine the voltage value of the cell 30 based on the potential difference between the first potential signal and a preset potential signal. The comparison unit 22 is connected to the acquisition unit 21. The comparison unit 22 compares the voltage value of the cell 30 with a preset voltage value, and is configured to determine whether the position of the first sampling unit 11 connected to the cell is at a preset position based on the comparison result.

[0020] Exemplarily, the acquisition unit 21 acquires the temperature information and the first potential signal of a plurality of cells 30 collected by a plurality of first collection units 11, and determines the voltage value of each cell 30 based on the potential difference between the first potential signal of each cell 30 and the preset potential signal. The comparison unit 22 compares the voltage value of each cell 30 with the preset voltage value. When the voltage value of the cell 30 is the same as the preset voltage value, the position of the first collection unit 11 is the preset position. When the voltage value of the cell 30 is different from the preset voltage value, the position of the first collection unit 11 is displaced. Such an installation can improve the accuracy of collecting the temperature information of the temperature collection device.

[0021] Preferably, continuing to refer to FIG. 2, the control module 20 further includes a second collection unit 23. The second collection unit 23 is connected to the first cell 30 at the start end or the first cell 30 at the end of the battery module 40. The second collection unit 23 is configured to collect the second potential signal of the first cell 30 at the start end or the first cell 30 at the end of the battery module 40 and output the second potential signal to the acquisition unit 21 as the preset potential signal.

[0022] The control module 20 can further determine the preset potential signal by providing the second collection unit 23. The second collection unit 23 is connected to the first cell 30 at the start end or the first cell 30 at the end of the battery module 40, and can output the collected second potential signal of the cell 30 to the acquisition unit 21 as the preset potential signal. Since the potential difference between the second potential signal of the first cell 30 at the start end or the first cell 30 at the end of the battery module 40 and the first potential signal of any other cell 30 can be used to determine the voltage value of the other cells 30 of the battery module 40, the second potential signal can be used as the preset potential signal. Such an installation can improve the accuracy of collecting the temperature information of the temperature collection device.

[0023] Preferably, continuing to refer to Figure 2, the control module 20 further comprises a warning unit 24, which is connected to a comparison unit 22 and is configured to emit a warning signal if the position of the sampling module 10 deviates from a preset position.

[0024] The control module 20 can also be equipped with a warning unit 24. If the control module 20 determines that the voltage value of cell 30 is different from the preset voltage value, it can determine that the position of the first sampling unit 11 has shifted from the preset position. In this case, the temperature information acquired by the first sampling unit 11 is not the temperature information of the preset position, and the warning unit 24 issues a warning signal to the operator. With this setup, the temperature sampling device that has shifted from the preset position can be adjusted in a timely manner.

[0025] Preferably, referring again to Figure 2, the first sampling unit 11 is provided in a one-to-one correspondence with the cells 30 of the battery module 40.

[0026] The sampling module 10 is equipped with corresponding first sampling units 11 based on the number of cells 30 in the battery module 40, and can acquire temperature information and first potential signals from multiple cells 30. This configuration improves the efficiency of acquiring temperature information and first potential signals by the temperature sampling device.

[0027] Preferably, continuing to refer to Figure 2, the control module 20 includes a controller in the battery management system.

[0028] The temperature sampling device may be installed within the battery management system, and the controller in the battery management system may be the control module 20. This installation simplifies the temperature sampling device and improves the efficiency of acquiring temperature information and the adjustment effect of the battery module 40.

[0029] For example, when the sampling module 10 is connected to the battery module 40, the sampling module 10 is connected to multiple cells 30 by multiple first sampling units 11, based on the number of cells 30 in the battery module 40. The first resistor R1 of each first sampling unit 11 collects temperature information of the corresponding cell 30, and the first sampling unit 11 collects a first potential signal of the location of the corresponding cell 30 and outputs the temperature information and the first potential signal to the control module 20. The second sampling unit 23 of the control module 20 is connected to the first cell 30 at the beginning or end of the battery module 40 and outputs the second potential signal of the collected cell 30 as a preset potential signal to the acquisition unit 21.

[0030] The acquisition unit 21 acquires temperature information and a first potential signal from multiple cells 30 collected by multiple first sampling units 11, and determines the voltage value of each cell 30 based on the potential difference between the first potential signal of each cell 30 and the preset potential signal. The comparison unit 22 compares the voltage value of each cell 30 with the preset voltage value, and if the voltage value of cell 30 is the same as the preset voltage value, the position of the first sampling unit 11 is the preset position. If the voltage value of cell 30 is different from the preset voltage value, the position of the first sampling unit 11 is shifted.

[0031] If the position of the first sampling unit 11 is at the preset position, the control module 20 determines that the temperature information of the cell 30 is the temperature information of the preset position and adjusts the performance of the battery module 40 based on the temperature information of the cell 30. If the position of the first sampling unit 11 is off, the warning unit 24 issues a warning signal to the operator.

[0032] Preferably, Figure 3 is a schematic diagram of the structure of a battery management system according to an embodiment of the present application. Referring to Figure 3, the battery management system 200 according to an embodiment of the present application includes a temperature sampling device 100 of any embodiment and has the effects of the temperature sampling device 100 of any embodiment, which will not be explained here.

[0033] Preferably, Figure 4 is a schematic diagram of the structure of a battery device according to an embodiment of the present application. Referring to Figure 4, the battery device 300 according to an embodiment of the present application includes a battery management system 200 and a battery module 40, and has the effect of a temperature sampling device 100 of any embodiment, which will not be explained here.

[0034] It should be understood that steps can be rearranged, added, or deleted using the various forms of flows described above. For example, the steps described in this application may be executed in parallel, sequentially, or in different orders, as long as the desired results of the proposed technology are achieved, and this paper is not limited thereto.

Claims

1. A sampling module connected to a cell of a battery module and configured to collect temperature information and a first potential signal from the cell, The system includes a control module connected to the sampling module and configured to determine whether the position of the sampling module is a preset position based on a first potential signal of the cell, Temperature sampling device.

2. The aforementioned sampling module is The system comprises at least one first sampling unit connected to the cells of the battery module and the control module, and configured to collect temperature information and a first potential signal from the cells, The aforementioned battery module comprises at least one cell. The temperature sampling device according to claim 1.

3. The first sampling unit is, Equipped with a first resistor and a sampling probe, The first resistor is configured such that its first end is connected to the first end of the cell and its second end is connected to the second end of the cell, the interface end of the first resistor is connected to the control module, and the first resistor is configured to acquire temperature information of the cell. The sampling probe is configured such that its first end is connected to the cell and its second end is connected to the control module, and the sampling probe is configured to collect a first potential signal from the cell. The temperature sampling device according to claim 2.

4. The control module is Equipped with an acquisition unit and a comparison unit, The acquisition unit is connected to the first resistor and the sampling probe, and is configured to acquire the temperature information and the first potential signal, and to determine the voltage value of the cell based on the potential difference between the first potential signal and the preset potential signal. The comparison unit is connected to the acquisition unit, and the comparison unit is configured to compare the voltage value of the cell with a preset voltage value and to determine, based on the comparison result, whether the position of the first sampling unit connected to the cell is the preset position. The temperature sampling device according to claim 3.

5. The control module is The battery module further comprises a second sampling unit connected to the first cell at the beginning or the first cell at the end of the battery module, configured to collect a second potential signal from the first cell at the beginning or the first cell at the end of the battery module, and to output the second potential signal as a preset potential signal to the acquisition unit. The temperature sampling device according to claim 4.

6. The control module is The system further comprises a warning unit connected to the comparison unit and configured to emit a warning signal if the position of the first sampling unit connected to the cell deviates from the preset position. The temperature sampling device according to claim 4.

7. The first sampling unit is configured to be provided in a one-to-one correspondence with the cells of the battery module. The temperature sampling device according to claim 2 or 3.

8. The control module includes a controller in the battery management system. The temperature sampling device according to claim 1 or 2.

9. A temperature sampling device according to any one of claims 1 to 8, Battery management system.

10. A battery management system and battery module as described in claim 9, battery device.

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