Temperature acquisition device, battery management system and battery device

Abstract

The utility model discloses a temperature acquisition device, a battery management system and a battery device. The temperature acquisition device provided by the embodiment of the utility model comprises an acquisition module, the acquisition module is used for being connected with a battery cell of a battery module, and the acquisition module is also used for acquiring temperature information of the battery cell and a first potential signal of the battery cell; the control module is connected with the acquisition module, and the control module is used for judging whether the position of the acquisition module is a preset position or not according to the first potential signal of the battery cell. According to the technical scheme provided by the embodiment, the temperature information of the battery cell and the first potential signal of the battery cell are acquired through the acquisition module, and then whether the position of the acquisition module is the preset position is judged through the control module, so that the effect of improving the accuracy of temperature information acquisition of the temperature acquisition device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a temperature acquisition device, a battery management system and a battery device. Background Art

[0002] A temperature acquisition device is usually arranged inside a battery module to collect the temperature of the battery module, and the temperature of the battery module can be used to analyze and adjust the performance of the battery module. However, the existing temperature acquisition devices often have the problem that the arrangement position does not match the specified 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. Therefore, how to improve the accuracy of the temperature acquisition device has become an urgent problem to be solved. Utility Model Content

[0003] The utility model provides a temperature acquisition device, a battery management system and a battery device, so as to solve the problem that the existing temperature acquisition device has low accuracy in collecting temperature information.

[0004] According to one aspect of the utility model, a temperature collection device is provided, comprising:

[0005] A collection module, the collection module is used to connect the battery cells of the battery module, and the collection module is also used to collect temperature information of the battery cells and a first potential signal of the battery cells;

[0006] A control module is connected to the acquisition module, and the control module is used to determine whether the position of the acquisition module is a preset position according to the first potential signal of the battery cell.

[0007] Optionally, the acquisition module also includes:

[0008] At least one first acquisition unit, the first acquisition unit is connected to the battery cell of the battery module and the control module, and the first acquisition unit is used to collect temperature information of the battery cell and a first potential signal of the battery cell;

[0009] The battery module includes at least one battery cell.

[0010] Optionally, the first acquisition unit includes:

[0011] a first resistor and a collection probe;

[0012] The first end of the first resistor is connected to the first end of the battery cell, the second end of the first resistor is connected to the second end of the battery cell, the first resistor is also connected to the control module, and the first resistor is used to collect temperature information of the battery cell;

[0013] The first end of the collection probe is connected to the battery cell, the second end of the collection probe is connected to the control module, and the collection probe is used to collect the first potential signal of the battery cell.

[0014] Optional, control module, including:

[0015] Get unit and compare unit;

[0016] The acquisition unit is connected to the first resistor and the acquisition probe, and is used to acquire temperature information and a first potential signal. The acquisition unit is also used to determine a voltage value of the battery cell according to a difference between the first potential signal and a preset potential signal.

[0017] The comparison unit is connected to the acquisition unit, and is used for comparing the voltage value of the battery cell with a preset voltage value, and judging whether the position of the acquisition module is the preset position according to the comparison result.

[0018] Optionally, the control module also includes:

[0019] The second acquisition unit is connected to the first battery cell at the head end or the first battery cell at the end of the battery module, and is used to collect the 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.

[0020] Optionally, the control module also includes:

[0021] The alarm unit and the comparison unit are used for sending out an alarm signal when the position of the acquisition module deviates from the preset position.

[0022] Optionally, the first acquisition units are arranged in a one-to-one correspondence with the cells of the battery module.

[0023] Optionally, the control unit includes a controller in a battery management system.

[0024] In a second aspect, an embodiment of the utility model provides a battery management system, comprising any of the temperature collection devices described above.

[0025] In a third aspect, an embodiment of the utility model provides a battery device, including a battery management system and a battery module.

[0026] The temperature acquisition device of the embodiment of the utility model includes an acquisition module and a control module, the acquisition module is used to connect the battery cells of the battery module, and the control module is connected to the acquisition module. The acquisition module is also used to acquire the temperature information of the battery cells and the first potential signal of the battery cells, and the control module is used to determine whether the position of the acquisition module is a preset position according to the first potential signal of the battery cells. The temperature acquisition device of this embodiment 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 according to the control module, thereby achieving the effect of improving the accuracy of the temperature acquisition device in acquiring temperature information.

[0027] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of a temperature collection device provided by an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of another temperature collection device provided by an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of a battery management system provided by an embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of a battery device provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] Figure 1 This is a schematic diagram of the structure of a temperature acquisition device provided by an embodiment of the utility model. Figure 1 The temperature acquisition device provided by the embodiment of the utility model includes an acquisition module 10, which is used to connect the battery cell 30 of the battery module 40, and is also used to collect temperature information of the battery cell 30 and a first potential signal of the battery cell 30. A control module 20, which is connected to the acquisition module 10, is used to determine whether the position of the acquisition module 10 is a preset position according to the first potential signal of the battery cell 30.

[0036] Specifically, the temperature acquisition device is used to collect temperature information of the battery cell 30 of the battery module 40. The temperature acquisition device is connected to the battery cell 30 through the acquisition module 10. The acquisition module 10 can collect the temperature information of the battery cell 30 and the first potential signal of the position of the battery cell 30 and output it to the control module 20. The control module 20 is connected to the acquisition module 10. The control module 20 can determine whether the position of the acquisition module 10 is a preset position according to the first potential signal of the battery cell 30, such as determining the voltage value of the battery cell 30 connected to the acquisition module 10 according to the first potential signal, and determining whether the position of the acquisition module 10 is a preset position according to the comparison result of the voltage value of the battery cell 30 and the preset value. When the position of the acquisition module 10 is the preset position, the control module 20 can determine that the temperature information of the battery cell 30 is the temperature information of the preset position, which can be used to adjust the performance of the battery module 40.

[0037] Exemplarily, when the temperature acquisition module 10 is connected to the battery module 40, the acquisition module 10 acquires the temperature information of the battery cell 30 and the first potential signal of the position where the battery cell 30 is located and outputs it 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 according to the first potential signal, and determines whether the position of the acquisition module 10 is the preset position according to the comparison result between the voltage value of the battery cell 30 and the preset value. When the position of the acquisition module 10 is 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 according to the temperature information of the battery cell 30.

[0038] The temperature acquisition device provided by the embodiment of the utility model judges the first potential signal of the collected battery cell 30 by setting the acquisition module 10 and the control module 20, so as to determine 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 the temperature acquisition device in collecting temperature information.

[0039] Optional, Figure 2 This is a schematic diagram of the structure of another temperature collection device provided by the embodiment of the utility model. Figure 2 The acquisition module 10 further includes at least one first acquisition unit 11, which is connected to the battery cell 30 of the battery module 40 and the control module 20, and is used to collect temperature information of the battery cell 30 and a first potential signal of the battery cell 30. The battery module 40 includes at least one battery cell 30.

[0040] Specifically, the acquisition module 10 may include a plurality of first acquisition units 11 to connect the battery module 40. When the battery module 40 includes a plurality of battery cells 30 connected in series, the acquisition module 10 may be connected to each battery cell 30 through one or more first acquisition units 11. Each first acquisition unit 11 may collect the temperature information of the connected battery cell 30 and the first potential signal of the battery cell 30, and then determine whether the position to which each first acquisition unit 11 is connected is a preset position through the control module 20. This setting can improve the accuracy of the temperature acquisition device in collecting temperature information.

[0041] Optionally, based on the above embodiment, continue to refer to Figure 2The 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, the second end of the first resistor R1 is connected to the second end of the battery cell 30, and the first resistor R1 is also connected to the control module 20. The first resistor R1 is used to collect temperature information of the battery cell 30. The first end of the acquisition probe 12 is connected to the battery cell 30, the second end of the acquisition probe 12 is connected to the control module 20, and the acquisition probe 12 is used to collect the first potential signal of the battery cell 30.

[0042] Specifically, the first acquisition unit 11 obtains the temperature information of the battery cell 30 through the first resistor R1, and the two ends of the first resistor R1 are respectively connected to the positive electrode and the negative electrode of the battery cell 30 to acquire the temperature information of 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 can acquire the first potential signal of the battery cell 30 and output it to the control module 20, and then the control module 20 determines whether the position of the first acquisition unit 11 is the preset position.

[0043] Optionally, based on the above embodiment, continue to refer to Figure 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 used to acquire temperature information and a first potential signal. The acquisition unit 21 is also used to determine the voltage value of the battery cell 30 according to the difference between the first potential signal and the preset potential signal. The comparison unit 22 is connected to the acquisition unit 21. The comparison unit 22 is used to compare the voltage value of the battery cell 30 with the preset voltage value, and determine whether the position of the acquisition module 10 is the preset position according to the comparison result.

[0044] Specifically, the acquisition module acquires the temperature information and the first potential signal of each battery cell 30 acquired by each first acquisition unit 11, and determines the voltage value of each battery cell 30 according to the 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 offset. This setting can further improve the accuracy of the temperature acquisition device in acquiring temperature information.

[0045] Optionally, based on the above embodiment, continue to refer to Figure 2The 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 used 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.

[0046] Specifically, the control module 20 may also be provided with a second acquisition unit 23 to determine a preset potential signal, and 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 end of the battery module 40, and output the collected second potential signal of the battery cell 30 as a 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 end of the battery module 40 and the first potential signal may be used to determine the voltage values ​​of other batteries 30 of the battery module 40, and thus may be used as a preset potential signal. Such a setting may further improve the accuracy of the temperature acquisition device in acquiring temperature information.

[0047] Optionally, based on the above embodiment, continue to refer to Figure 2 The control module 20 further includes an alarm unit 24, which is connected to the comparison unit 22. The alarm unit 24 is used to send an alarm signal when the position of the acquisition module 10 deviates from the preset position.

[0048] Specifically, the control module 20 may also be provided with an alarm unit 24. When the control module 20 determines that the voltage value of the battery cell 30 is different from the preset voltage value, it may be determined that the position of the first acquisition unit 11 has deviated from the preset position. At this time, the temperature information acquired by the first acquisition unit 11 is not the temperature information of the preset position, and the alarm unit 24 will send an alarm signal to prompt the operator. This setting can timely adjust the temperature acquisition device that deviates from the preset position.

[0049] Optionally, based on the above embodiment, continue to refer to Figure 2 The first collection unit 11 is arranged in one-to-one correspondence with the battery cells 30 of the battery module 40 .

[0050] Specifically, the acquisition module 10 can set the first acquisition unit 11 according to the number of cells 30 in the battery module 40, and then obtain the temperature information and the first potential signal of each cell 30. This setting can improve the efficiency of the temperature acquisition device in obtaining temperature information and the first potential signal.

[0051] Optionally, based on the above embodiment, continue to refer to Figure 2 , the control unit includes a controller in a battery management system.

[0052] Specifically, 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 further simplify the temperature acquisition device, improve the efficiency of obtaining temperature information and the regulation effect on the battery module 40.

[0053] Exemplarily, when the temperature acquisition module 10 is connected to the battery module 40, the acquisition module 10 is connected to each battery cell 30 through the first acquisition unit 11 according to the number of battery cells 30 in the battery module 40. The first resistor R1 of each first acquisition unit 11 acquires the temperature information of the corresponding battery cell 30, and the first acquisition unit 11 acquires the first potential signal of the position where the corresponding battery cell 30 is located, and outputs it 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 end of the battery module 40, and outputs the acquired second potential signal of the battery cell 30 as a preset potential signal to the acquisition unit 21.

[0054] The acquisition module acquires the temperature information and the first potential signal of each battery cell 30 acquired by each first acquisition unit 11, and determines the voltage value of each battery cell 30 according to the 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 offset.

[0055] When the position of the first acquisition unit 11 is 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 according to the temperature information of the battery cell 30. When the position of the first acquisition unit 11 is offset, the alarm unit 24 will send an alarm signal to prompt the operator.

[0056] Optional, Figure 3 FIG. 1 is a schematic diagram of a battery management system provided by an embodiment of the utility model. Figure 3 The battery management system 200 provided in the embodiment of the utility model includes the temperature acquisition device 100 of any of the above embodiments, and has the beneficial effects of the temperature acquisition device 100 of any of the above embodiments, which will not be repeated here.

[0057] Optional, Figure 4 Schematic diagram of a battery device provided by an embodiment of the utility model. Figure 4The battery device 300 provided in the embodiment of the utility model includes a battery management system 200 and a battery module 40, and has the beneficial effects of the temperature collection device 100 in any of the above embodiments, which will not be described in detail here.

[0058] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0059] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A temperature collection device, characterized in that: include: A collection module, the collection module is used to connect the battery cells of the battery module, and the collection module is also used to collect temperature information of the battery cells and a first potential signal of the battery cells; A control module is connected to the acquisition module, and is used 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, characterized in that: The acquisition module further includes: At least one first acquisition unit, the first acquisition unit is connected to the battery cell of the battery module and the control module, and the first acquisition unit is used to collect temperature information of the battery cell 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, characterized in that: The first acquisition unit includes: a first resistor and a collection probe; The first end of the first resistor is connected to the first end of the battery cell, the second end of the first resistor is connected to the second end of the battery cell, the first resistor is also connected to the control module, and the first resistor is used to collect temperature information of the battery cell; The first end of the acquisition probe is connected to the battery cell, and the second end of the acquisition probe is connected to the control module. The acquisition probe is used to acquire a first potential signal of the battery cell.

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

5. The temperature acquisition device according to claim 4, characterized in that: The control module further includes: A second acquisition unit, the second acquisition unit is connected to the first battery cell at the head end or the first battery cell at the end of the battery module, the second acquisition unit is used to collect 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, characterized in that: The control module further includes: An alarm unit, the alarm unit and the comparison unit, the alarm unit is used to send an alarm signal when the position of the acquisition module deviates from the preset position.

7. The temperature acquisition device according to claim 2 or 3, characterized in that: The first acquisition units are arranged in a one-to-one correspondence with the cells of the battery module.

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

9. A battery management system, characterized in that: The invention comprises the temperature collecting device according to any one of claims 1 to 8.

10. A battery device, characterized in that: Includes the battery management system and battery module as described in claim 9.

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