Temperature collection apparatus, battery management system, and battery apparatus

Abstract

A temperature collection apparatus, a battery management system, and a battery apparatus. The temperature collection apparatus comprises a collection module (10), which is configured to connect a battery cell (30) of a battery module (40), so as to collect temperature information and a first potential signal of the battery cell (30); and a control module (20), which is connected to the collection module (10), wherein the control module (20) is configured to determine, on the basis of the first potential signal of the battery cell (30), whether the position of the collection module (10) is a preset position. In the technical solution provided in the present application, a collection module is configured to collect temperature information of a battery cell and a first potential signal of the battery cell, and then whether the position of the collection module is a preset position is determined by means of a control module, thereby achieving the effect of improving the accuracy of temperature information collected by the temperature collection apparatus.

Description

Temperature acquisition device, battery management system and battery device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 9, 2024, with application number 202420056374.4. The entire contents of the above application are incorporated by reference into this application.

[0002] Technical Field

[0003] The present application relates to the field of battery technology, for example, to a temperature acquisition device, a battery management system and a battery device.

[0004] Background Art

[0005] A temperature acquisition device is usually arranged inside the battery module to collect the temperature of the battery module. The temperature of the battery module can be used to analyze and adjust the performance of the battery module.

[0006] Technical issues

[0007] The temperature acquisition device in the related art is often arranged at a position inconsistent with the designated position, which makes it difficult for the temperature acquisition device to effectively reflect the actual temperature of the battery, thereby affecting the performance of the battery.

[0008] Technical Solutions

[0009] In a first aspect, the present application provides a temperature acquisition device, comprising:

[0010] An acquisition module is configured to be connected to the battery cells of the battery module and to acquire temperature information and a first potential signal of the battery cells;

[0011] The control module is connected to the acquisition module, and the control module is configured to determine whether the position of the acquisition module is a preset position according to the first potential signal of the battery cell.

[0012] In a second aspect, the present application provides a battery management system comprising any one of the temperature acquisition devices.

[0013] In a third aspect, the present application provides a battery device including a battery management system and a battery module.

[0014] Beneficial effects

[0015] The temperature acquisition device of the present application includes an acquisition module and a control module. The acquisition module is configured to connect to the battery cells of the battery module, and the control module is connected to the acquisition module. The acquisition module is also configured to acquire the temperature information of the battery cells and the first potential signal of the battery cells, and the control module is configured to determine whether the position of the acquisition module is a preset position based on the first potential signal of the battery cells. The temperature acquisition device of the present application acquires the temperature information of the battery cells and the first potential signal of the battery cells through the acquisition module, and then determines whether the position of the acquisition module is a preset position based on the control module, thereby achieving the effect of improving the accuracy of the temperature information acquired by the temperature acquisition device.

[0016] BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1A is a schematic diagram of the structure of a temperature acquisition device provided by some implementations of the present application;

[0018] FIG1B is a schematic structural diagram of a temperature acquisition device and a battery module connected in some implementations of the present application;

[0019] FIG2 is a schematic structural diagram of another temperature acquisition device provided by some implementations of the present application;

[0020] FIG3 is a schematic diagram of the structure of a battery management system provided by some implementations of the present application;

[0021] FIG4 is a schematic structural diagram of a battery device provided by some implementations of the present application.

[0022] Modes for Carrying Out the Invention

[0023] The terms "first", "second" etc. in the specification, claims and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, in addition to comprising the process, method, system, product or equipment of a series of steps or units shown in the embodiments of the present application, other processes, methods, systems, products or equipment of this series of steps or units not clearly listed may also be included, or other steps or units inherent to these processes, methods, systems, products or equipment.

[0024] FIG1A is a schematic diagram of the structure of a temperature acquisition device provided in an embodiment of the present application, and FIG1B is a schematic diagram of the structure of the connection between a temperature acquisition device provided in an embodiment of the present application and a battery module. Referring to FIG1A and FIG1B , the temperature acquisition device provided in an embodiment of the present application includes an acquisition module 10, which is configured to be connected to a battery cell 30 of a battery module 40 and is further configured to collect temperature information of the battery cell 30 and a first potential signal of the battery cell 30. A control module 20 is connected to the acquisition module 10 and is configured to determine whether the position of the acquisition module 10 is a preset position based on the first potential signal of the battery cell 30.

[0025] The temperature acquisition device is configured to collect temperature information from the battery cells 30 of the battery module 40. The temperature acquisition device is connected to the battery cells 30 via the acquisition module 10. The acquisition module 10 can collect the temperature information of the battery cells 30 and a first potential signal indicating the location of the battery cells 30, and output the temperature information and the first potential signal to the control module 20. The control module 20 is connected to the acquisition module 10 and can determine whether the acquisition module 10 is located at a preset location based on the first potential signal from the battery cells 30. For example, the control module 20 can determine the voltage value of the battery cell 30 to which the acquisition module 10 is connected based on the first potential signal, and determine whether the acquisition module 10 is located at the preset location based on a comparison between the voltage value of the battery cell 30 and a preset value. When the acquisition module 10 is located at the preset location, the control module 20 can determine that the temperature information of the battery cell 30 is the temperature information of the preset location, which can be used to adjust the performance of the battery module 40.

[0026] Exemplarily, when the acquisition module 10 is connected to the battery module 40, the acquisition module 10 collects temperature information of the battery cell 30 and a first potential signal at the location of the battery cell 30, and outputs the temperature information and the first potential signal to the control module 20. The control module 20 determines the voltage value of the battery cell 30 to which the acquisition module 10 is connected based on the first potential signal, and determines whether the location of the acquisition module 10 is the preset location based on a comparison result between the voltage value of the battery cell 30 and a preset value. If the acquisition module 10 is at the preset location, the control module 20 determines that the temperature information of the battery cell 30 is the temperature information at the preset location, and adjusts the performance of the battery module 40 based on the temperature information of the battery cell 30.

[0027] The temperature acquisition device provided in the embodiment of the present application, by setting up an acquisition module 10 and a control module 20, judges the first potential signal of the collected battery cell 30, thereby determining whether the position of the acquisition module 10 is a preset position, so that the control module 20 can adjust the performance of the battery module 40 according to the temperature information of the battery cell 30 at the preset position, thereby achieving the effect of improving the accuracy of temperature information collected by the temperature acquisition device.

[0028] Optionally, Figure 2 is a schematic diagram of the structure of another temperature acquisition device provided in an embodiment of the present application. Referring to Figure 2 , the acquisition module 10 further includes at least one first acquisition unit 11. The first acquisition unit 11 is connected to the battery cells 30 of the battery module 40 and the control module 20. The first acquisition unit 11 is configured to collect temperature information and a first potential signal of the battery cell 30. The battery module 40 includes at least one battery cell 30.

[0029] The acquisition module 10 may include multiple first acquisition units 11 for connection to the battery module 40. When the battery module 40 includes multiple battery cells 30 connected in series, the acquisition module 10 may connect to each of the battery cells 30 via one or more first acquisition units 11. Each first acquisition unit 11 can collect temperature information and a first potential signal from the connected battery cell 30. The control module 20 then determines whether the location to which each first acquisition unit 11 is connected is a preset location. This configuration improves the accuracy of temperature information collected by the temperature acquisition device.

[0030] Optionally, referring to FIG2 , the first acquisition unit 11 includes a first resistor R1 and an acquisition probe 12 . The first end of the first resistor R1 is connected to the first end of the battery cell 30 , and the second end of the first resistor R1 is connected to the second end of the battery 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 temperature information of the battery cell 30 . The first end of the acquisition probe 12 is connected to the battery cell 30 , and the second end of the acquisition probe 12 is connected to the control module 20 . The acquisition probe 12 is configured to collect a first potential signal of the battery cell 30 .

[0031] The first acquisition unit 11 acquires temperature information from the battery cell 30 via a first resistor R1. The two ends of the first resistor R1 are connected to the positive and negative electrodes of the battery cell 30, respectively, to acquire temperature information from the battery cell 30 connected to the first resistor R1. The acquisition probe 12 is connected between the control module 20 and the battery cell 30. The acquisition probe 12 acquires a first potential signal from the battery cell 30 and outputs it to the control module 20, which then determines whether the first acquisition unit 11 is in the preset position.

[0032] Optionally, referring again 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 acquisition probe 12. The acquisition unit 21 is configured to acquire temperature information and a first potential signal. The acquisition unit 21 is also configured to determine the voltage value of the battery 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 is configured to compare the voltage value of the battery cell 30 with a preset voltage value and, based on the comparison result, determine whether the position of the first acquisition unit 11 to which the battery cell is connected is the preset position.

[0033] Exemplarily, the acquisition unit 21 acquires temperature information and first potential signals of multiple battery cells 30 collected by multiple first acquisition units 11, and determines the voltage value of each battery cell 30 based on the potential difference between the first potential signal of each battery cell 30 and a preset potential signal. The comparison unit 22 compares the voltage value of each battery cell 30 with a preset voltage value. When the voltage value of the battery cell 30 is the same as the preset voltage value, the position of the first acquisition unit 11 is the preset position. When the voltage value of the battery cell 30 is different from the preset voltage value, the position of the first acquisition unit 11 is shifted. This configuration can improve the accuracy of the temperature information collected by the temperature acquisition device.

[0034] Optionally, referring to Figure 2, the control module 20 also includes a second acquisition unit 23, which is connected to the first battery cell 30 at the head end or the first battery cell 30 at the end of the battery module 40. The second acquisition unit 23 is configured to collect the second potential signal of the first battery cell 30 at the head end or the first battery cell 30 at the end of the battery module 40, and output the second potential signal as a preset potential signal to the acquisition unit 21.

[0035] The control module 20 may also be provided with a second acquisition unit 23 to determine a preset potential signal. The second acquisition unit 23 may be connected to the first battery cell 30 at the head end or the first battery cell 30 at the tail end of the battery module 40, and output the acquired second potential signal of the battery cell 30 as the preset potential signal to the acquisition unit 21. The potential difference between the second potential signal of the first battery cell 30 at the head end or the first battery cell 30 at the tail end of the battery module 40 and the first potential signal of any other battery cell 30 can be used to determine the voltage values ​​of the other battery cells 30 in the battery module 40, and thus the second potential signal can be used as the preset potential signal. This configuration can improve the accuracy of the temperature information collected by the temperature acquisition device.

[0036] Optionally, referring to FIG. 2 , the control module 20 further includes an alarm unit 24 , which is connected to the comparison unit 22 . The alarm unit 24 is configured to send an alarm signal when the position of the acquisition module 10 deviates from a preset position.

[0037] The control module 20 may also include an alarm unit 24. When the control module 20 determines that the voltage value of the battery cell 30 differs from a preset voltage value, it can determine that the position of the first acquisition unit 11 has deviated from the preset position. If the temperature information obtained by the first acquisition unit 11 is not the temperature information at the preset position, the alarm unit 24 will issue an alarm signal to alert the operator. This configuration allows for timely adjustment of the temperature acquisition device if it deviates from the preset position.

[0038] Optionally, referring to FIG. 2 , the first acquisition unit 11 is provided in a one-to-one correspondence with the battery cells 30 of the battery module 40 .

[0039] The acquisition module 10 can be configured with a first acquisition unit 11 according to the number of cells 30 in the battery module 40, thereby acquiring temperature information and first potential signals of the plurality of cells 30. This configuration can improve the efficiency of the temperature acquisition device in acquiring temperature information and first potential signals.

[0040] Optionally, referring to FIG2 , the control module 20 includes a controller in a battery management system.

[0041] The temperature acquisition device can be set in the battery management system, and the controller in the battery management system can be used as the control module 20. This setting can simplify the temperature acquisition device, improve the efficiency of obtaining temperature information and the regulation effect on the battery module 40.

[0042] Exemplarily, when the acquisition module 10 is connected to the battery module 40, the acquisition module 10 is connected to the corresponding battery cells 30 via multiple first acquisition units 11, depending on the number of battery cells 30 in the battery module 40. The first resistor R1 of each first acquisition unit 11 collects temperature information of the corresponding battery cell 30. The first acquisition unit 11 collects a first potential signal at the location of the corresponding battery cell 30 and outputs the temperature information and the first potential signal to the control module 20. The second acquisition unit 23 of the control module 20 is connected to the first battery cell 30 at the head end or the first battery cell 30 at the tail end of the battery module 40 and outputs the collected second potential signal of the battery cell 30 as a preset potential signal to the acquisition unit 21.

[0043] The acquisition unit 21 acquires the temperature information and first potential signals of the multiple battery cells 30 collected by the multiple first acquisition units 11 and determines the voltage value of each battery cell 30 based on the potential difference between the first potential signal of each battery cell 30 and the preset potential signal. The comparison unit 22 compares the voltage value of each battery cell 30 with the preset voltage value. When the voltage value of the battery cell 30 is the same as the preset voltage value, the position of the first acquisition unit 11 is the preset position. When the voltage value of the battery cell 30 is different from the preset voltage value, the position of the first acquisition unit 11 is shifted.

[0044] When the first acquisition unit 11 is at the preset position, the control module 20 determines that the temperature information of the battery 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 battery cell 30. If the position of the first acquisition unit 11 shifts, the alarm unit 24 will issue an alarm signal to alert the operator.

[0045] Optionally, Figure 3 is a schematic diagram of the structure of a battery management system provided in an embodiment of the present application. Referring to Figure 3, the battery management system 200 provided in an embodiment of the present application includes the temperature acquisition device 100 of any embodiment and has the effects of the temperature acquisition device 100 of any embodiment, which will not be repeated here.

[0046] Optionally, Figure 4 is a schematic diagram of the structure of a battery device provided in an embodiment of the present application. Referring to Figure 4, the battery device 300 provided in an embodiment of the present application includes a battery management system 200 and a battery module 40, and has the effects of the temperature acquisition device 100 in any embodiment, which will not be repeated here.

[0047] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the multiple steps described in this application can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this application can be achieved. This is not limited herein.

Claims

1. A temperature collection device, comprising: A collection module, wherein the collection module is configured to be connected to the battery cell of the battery module and collect temperature information and a first potential signal of the battery cell; A control module is connected to the acquisition module, and the control module is configured to determine whether the position of the acquisition module is a preset position according to the first potential signal of the battery cell.

2. The temperature acquisition device according to claim 1, wherein: The acquisition module comprises: At least one first acquisition unit, wherein the at least one first acquisition unit is configured to be connected to the battery cell of the battery module and the control module, and the first acquisition unit is configured to collect temperature information and a first potential signal of the battery cell; Wherein, the battery module includes at least one battery cell.

3. The temperature acquisition device according to claim 2, wherein: The first acquisition unit includes: a first resistor and a collection probe; The first resistor is configured such that a first end is connected to a first end of the battery cell, a second end is connected to a second end of the battery cell, an interface end of the first resistor is connected to the control module, and the first resistor is configured to collect temperature information of the battery cell; The acquisition probe is configured such that a first end is connected to the battery cell and a second end is connected to the control module. The acquisition probe is configured to acquire a first potential signal of the battery cell.

4. The temperature acquisition device according to claim 3, wherein: The control module comprises: Get unit and compare unit; The acquisition unit is connected to the first resistor and the acquisition probe, and the acquisition unit is configured to acquire the temperature information and the first potential signal, and determine the voltage value of the battery cell according to the potential difference between the first potential signal and a preset potential signal; The comparison unit is connected to the acquisition unit, and is configured to compare the voltage value of the battery cell with a preset voltage value, and determine whether the position of the first acquisition unit to which the battery cell is connected is the preset position according to the comparison result.

5. The temperature acquisition device according to claim 4, wherein: The control module further includes: A second acquisition unit, wherein the second acquisition unit is configured to be connected to the first battery cell at the head end or the first battery cell at the end of the battery module, and to acquire a second potential signal of the first battery cell at the head end or the first battery cell at the end of the battery module, and output the second potential signal as a preset potential signal to the acquisition unit.

6. The temperature acquisition device according to claim 4, wherein: The control module further includes: An alarm unit, wherein the alarm unit is connected to the comparison unit, and the alarm unit is configured to send out an alarm signal when the position of the first acquisition unit connected to the battery cell deviates from the preset position.

7. The temperature acquisition device according to claim 2 or 3, wherein: The first acquisition units are arranged to correspond one to one with the cells of the battery module.

8. The temperature acquisition device according to claim 1 or 2, wherein: The control module includes a controller in a battery management system.

9. A battery management system, comprising the temperature acquisition device according to any one of claims 1 to 8.

10. A battery device comprising the battery management system and a battery module according to claim 9.

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