Battery cover plate structure and single battery

Abstract

The utility model belongs to the technical field of power batteries, and discloses a battery cover plate structure and a single battery. The battery cover plate structure comprises a cover plate body, a first insulating part, an intelligent detection module and two pole columns, the first insulating part is arranged on one side of the cover plate body, the two pole columns are arranged at intervals, and each pole column penetrates through the first insulating part and the cover plate body and is in insulated and sealed connection with the cover plate body; one of the two poles is a positive pole, and the other pole is a negative pole; the intelligent detection module is arranged on one side, facing the first insulating part, of the cover plate body in an insulating manner, and the intelligent detection module is used for detecting pressure and / or temperature in the single battery; the two electrodes of the intelligent detection module are electrically connected to the two pole columns in a one-to-one correspondence mode, the internal pressure and temperature of the battery can be monitored in real time, charging and discharging of the single battery are used for supplying power to the detection module, self power supply of the battery cover plate structure is achieved, the integration degree is high, and the internal space of the single battery cannot be occupied.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a battery cover structure and a single battery cell. Background Technology

[0002] In the field of power battery technology, problems such as thermal runaway within the battery cells can cause excessive internal pressure and temperature. When the internal pressure reaches the activation threshold of the explosion-proof valve, it opens to release internal gases, reducing battery pressure and preventing explosion. However, this protective measure is only taken after thermal runaway has already occurred. If internal pressure and temperature could be detected earlier, allowing for earlier safety control, battery safety and lifespan could be significantly improved.

[0003] Therefore, there is an urgent need for a battery cover structure and a single battery cell to solve the above-mentioned technical problems. Utility Model Content

[0004] One objective of this invention is to provide a battery cover structure that can monitor the internal pressure and temperature of the battery in real time, and uses the charging and discharging of individual batteries to power the detection module, thereby achieving self-powering of the battery cover structure. It also has a high degree of integration and does not occupy the internal space of individual batteries.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The battery cover structure includes a cover body, a first insulating component, an intelligent detection module, and two terminals.

[0007] The first insulating element is disposed on one side of the cover plate body, and the two poles are disposed at intervals, with each pole passing through the first insulating element and the cover plate body and being insulated and sealed to the cover plate body; one of the two poles is a positive pole and the other is a negative pole.

[0008] The aforementioned intelligent detection module is insulated on the side of the cover plate body facing the first insulating member. The intelligent detection module is used to detect the pressure and / or temperature inside the single cell. The two electrodes of the intelligent detection module are electrically connected to the two aforementioned terminals in a one-to-one correspondence.

[0009] Optionally, the above-mentioned intelligent detection module includes:

[0010] The intelligent detection unit can be electrically connected to an external control system to detect and transmit pressure and / or temperature signals within the aforementioned individual cells.

[0011] Two electrode connecting wires, one end of which is electrically connected to the aforementioned intelligent detection body, and the other end of which is provided with the aforementioned electrode, so as to be electrically connected to the two aforementioned pole posts respectively.

[0012] Optionally, the aforementioned intelligent detection body includes a pressure detection element, which is used to detect and transmit pressure signals within the individual battery cell; and / or,

[0013] The aforementioned intelligent detection body includes a temperature detection element, which is used to detect and transmit the temperature signal within the aforementioned single battery cell.

[0014] Optionally, the cover plate body has two pole holes, and the poles are insulated and sealed through the pole holes one by one. The cover plate body has a mounting groove on the side facing the first insulating component, and the intelligent detection module is disposed in the mounting groove, which is connected to the pole holes.

[0015] Optionally, the above-mentioned mounting slot includes:

[0016] The first tank, in which the aforementioned intelligent detection body is disposed;

[0017] Two second tanks, one end of which is connected to the first tank, and the other end of which is connected to the two pole holes respectively, and the two electrode connecting lines are respectively arranged in the two second tanks.

[0018] Optionally, it also includes a sealing element, which is sleeved on the outer periphery of the pole post to insulate and seal the pole post from the cover plate body.

[0019] Optionally, it also includes a second insulating member, which is clamped on the side of the pole and the cover plate body opposite to the first insulating member.

[0020] Optionally, an insulating film is provided on the side of the cover plate body facing the first insulating member, and the insulating film covers at least the contact area between the cover plate body and the intelligent detection module.

[0021] Optionally, the insulating film and the cover plate body are integrally stamped using coated aluminum material; or the cover plate body is stamped and the insulating film is sprayed onto the cover plate body.

[0022] Another objective of this invention is to provide a single battery that can monitor the internal pressure and temperature of the battery in real time, and use the charging and discharging of the single battery to power the detection module, thereby achieving self-powering of the battery cover structure. It also has a high degree of integration and does not occupy the internal space of the single battery.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] A single battery cell, including the battery cover structure described above.

[0025] The beneficial effects of this utility model are:

[0026] This invention provides a battery cover structure and a single battery cell. By integrating an intelligent detection module, it enables real-time monitoring of the internal pressure and / or temperature of the single battery cell with the battery cover structure installed. This allows for timely control when abnormal temperature and / or pressure changes occur, mitigating thermal runaway or thermal propagation and improving the safety and lifespan of the single battery cell with the battery cover structure. Furthermore, the intelligent detection module is integrated into the cover body, resulting in a compact structure that does not occupy internal battery space, thus maximizing space utilization. Additionally, the two electrodes of the intelligent detection module are electrically connected to two terminals respectively, enabling self-supply of power to the intelligent detection module and ensuring a continuous power supply. Since it is directly electrically connected to the single battery cell, no other electrical connection structures are required, reducing the weight of the battery cover structure. Attached Figure Description

[0027] Figure 1 This is an isometric view of the battery cover structure provided in a specific embodiment of this utility model;

[0028] Figure 2 This is an exploded view of the battery cover structure provided in a specific embodiment of this utility model;

[0029] Figure 3 This is an isometric view of the cover plate body provided in a specific embodiment of this utility model.

[0030] In the picture:

[0031] 10. Cover plate body; 101. Pole post hole; 102. Mounting groove; 1021. First groove; 1022. Second groove; 103. Riveting flange;

[0032] 20. First insulating component; 30. Pole post;

[0033] 40. Intelligent detection module; 41. Intelligent detection body; 42. Electrode connection wire;

[0034] 50. Sealing element; 60. Secondary insulating element; 70. Explosion-proof valve; 71. Explosion-proof membrane; 80. Liquid injection hole. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] The following reference Figures 1 to 3 This invention introduces the battery cover structure provided by this utility model.

[0040] This embodiment provides a battery cover structure that integrates an intelligent detection module 40, which can detect the pressure and / or temperature inside each individual battery cell in real time. This allows for timely control when abnormal temperature and / or pressure changes occur, thereby improving thermal runaway or thermal propagation and enhancing the safety and lifespan of the individual batteries with this battery cover structure installed.

[0041] Please refer to Figure 1 and Figure 2Specifically, the battery cover structure includes a cover body 10, a first insulating element 20, an intelligent detection module 40, and two terminals 30. The first insulating element 20 is disposed on one side of the cover body 10, and the two terminals 30 are spaced apart. Each terminal 30 passes through the first insulating element 20 and the cover body 10 and is insulated and sealed to the cover body 10. One of the two terminals 30 is a positive terminal, and the other is a negative terminal. The intelligent detection module 40 is insulatedly disposed on the side of the cover body 10 facing the first insulating element 20. The intelligent detection module 40 is used to detect the pressure and / or temperature inside the single cell. The two electrodes of the intelligent detection module 40 are electrically connected one-to-one to the two terminals 30.

[0042] In this embodiment, the battery cover structure integrates an intelligent detection module 40, enabling real-time monitoring of the internal pressure and / or temperature of the individual cells on which the cover structure is installed. This allows for timely control when abnormal temperature and / or pressure changes occur, mitigating thermal runaway or thermal propagation and improving the safety and lifespan of the individual cells. Furthermore, the intelligent detection module 40 is integrated into the cover body 10, resulting in a compact structure that does not occupy internal battery space, thus maximizing space utilization. Additionally, the two electrodes of the intelligent detection module 40 are electrically connected to the two terminals 30, enabling self-supply of power to the module and ensuring a continuous power supply. Since it is directly electrically connected to the individual cells, no other electrical connection structures are required, reducing the weight of the battery cover structure.

[0043] Specifically, when a single battery cell is charged through the positive and negative terminals, the current is also transferred through the positive and negative terminals to the electrodes and then enters the intelligent detection module 40 to supply power to it; when a single battery cell is discharged through the positive and negative terminals, the current is also transferred through the positive and negative terminals to the electrodes and then enters the intelligent detection module 40 to supply power to it; thus, the intelligent detection module 40 can be continuously powered.

[0044] Optionally, the first insulating member 20 can be either separately installed or integrally formed, both of which can achieve insulation of the cover plate body 10 and the inside of the battery. Exemplarily, in this embodiment, the first insulating member 20 is integrally formed, resulting in a simple structure.

[0045] Please refer to Figure 1 and Figure 2In this embodiment, the intelligent detection module 40 includes an intelligent detection body 41 and two electrode connection lines 42. The intelligent detection body 41 can be electrically connected to an external control system to detect and transmit pressure signals and / or temperature signals within a single cell. One end of each of the two electrode connection lines 42 is electrically connected to the intelligent detection body 41, and the other end is provided with an electrode to be electrically connected to two terminals 30 respectively, thereby enabling power supply to the intelligent detection module 40 and ensuring its real-time detection and transmission of pressure signals and / or temperature signals within a single cell.

[0046] Optionally, the intelligent detection unit 41 is connected to the external control system via wireless communication. This enables real-time detection of the internal pressure and temperature of a single battery cell, eliminating the need for additional electrical connection paths and reducing space requirements. Of course, in other embodiments, the intelligent detection unit 41 can also be connected via other low-voltage communication lines to achieve real-time detection of the internal pressure and temperature of a single battery cell. The design can be adapted to actual space and needs, and no specific limitations are made here. Preferably, the detection signal transmission of the intelligent detection unit 41 can be achieved not only via wireless communication but also via low-voltage communication lines. This improves the reliability of its external connections; even if one connection fails, other communication methods remain, enhancing the reliability of the battery cover structure.

[0047] Specifically, the intelligent detection body 41 includes a pressure detection element for detecting and transmitting pressure signals within a single battery cell; and / or the intelligent detection body 41 includes a temperature detection element for detecting and transmitting temperature signals within a single battery cell. This enables the detection of pressure and / or temperature within a single battery cell. Preferably, the intelligent detection body 41 includes both a pressure detection element and a temperature detection element, which allows for more comprehensive information detection. It is understood that the intelligent detection body 41 may also include other detection elements, which are not specifically limited here.

[0048] Optionally, a pressure sensor can be used for the pressure detection element, and a temperature sensor can be used for the temperature detection element. This method has a simple structure, low cost, and high detection accuracy.

[0049] Please refer to Figure 3Furthermore, the cover plate body 10 has two electrode post holes 101, and the electrode posts 30 are correspondingly and insulatedly sealed through the electrode post holes 101. The cover plate body 10 has a mounting groove 102 on the side facing the first insulating member 20, and the intelligent detection module 40 is disposed in the mounting groove 102, which is connected to the electrode post holes 101. This allows the installation of the intelligent detection module 40 to only modify the structure of the cover plate body 10, without requiring changes to the first insulating member 20 or other structures, simplifying component structure modifications and eliminating the need to occupy internal space of the individual battery. Moreover, the connection between the mounting groove 102 and the electrode post holes 101 provides space for the installation of the electrode connection wires 42 of the intelligent detection module 40.

[0050] Specifically, the mounting slot 102 includes a first slot 1021 and two second slots 1022. The intelligent detection body 41 is disposed in the first slot 1021. One end of each of the two second slots 1022 is connected to the first slot 1021, and the other end is connected to the two electrode holes 101 respectively. The two electrode connecting lines 42 are disposed in the two second slots 1022 in a one-to-one correspondence, thereby realizing the integration of the cover plate body 10 with the intelligent detection module 40.

[0051] Furthermore, an insulating film is provided on the side of the cover plate body 10 facing the first insulating member 20. The insulating film covers at least the contact area between the cover plate body 10 and the intelligent detection module 40, thereby achieving insulation between the intelligent detection module 40 and the cover plate body 10, avoiding problems such as short circuits, and improving the reliability and safety of the battery cover plate structure.

[0052] Specifically, the insulating film and the cover plate body 10 are integrally stamped using coated aluminum material; or the cover plate body 10 is stamped and the insulating film is sprayed onto the cover plate body 10; both methods can achieve the setting of an insulating layer.

[0053] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the pole post 30 and the cover plate body 10 are riveted or glued together. More specifically, the pole post 30 passes through the first insulating member 20 and the cover plate body 10 and is fixed to the cover plate body 10 by forming a riveted part; or, it also includes a riveting block, the pole post 30 passes through the first insulating member 20, the cover plate body 10 and the riveting block and is riveted together with the riveting block to fix it to the cover plate body 10; or, the pole post 30 passes through the first insulating member 20 and the cover plate body 10 and is glued together with the cover plate body 10 by a glued part; or, the cover plate body 10 has a riveting flange 103, the pole post 30 passes through the first insulating member 20 and the cover plate body 10 and is riveted to the cover plate body 10 by the riveting flange 103 of the cover plate body 10. All of these methods can achieve a fixed connection between the pole post 30 and the cover plate body 10.

[0054] Furthermore, the battery cover structure also includes a sealing element 50, which is sleeved on the outer periphery of the terminal post 30 to insulate and seal the terminal post 30 from the cover body 10. Specifically, the sealing element 50 is partially sandwiched between the outer periphery of the terminal post 30 and the hole wall of the terminal post hole 101 to achieve insulation and sealing performance between the terminal post 30 and the hole wall of the terminal post hole 101.

[0055] Furthermore, the battery cover structure also includes a second insulating member 60, which is sandwiched between the terminal post 30 and the cover body 10 on the side away from the first insulating member 20, to ensure insulation between the side of the terminal post 30 away from the battery interior and the cover body 10. Through the mutual connection of the sealing member 50, the first insulating member 20 and the second insulating member 60, insulation can be achieved between the various positions where the terminal post 30 contacts the cover body 10, thereby improving the reliability of the battery cover structure.

[0056] Furthermore, the battery cover structure also includes an explosion-proof valve 70, which is disposed on the cover body 10 for releasing pressure when the internal pressure of the battery is too high. Optionally, the battery cover structure also includes an explosion-proof film 71, which is affixed to the side of the explosion-proof valve 70 away from the inside of the battery to protect the explosion-proof valve 70 from damage when not in use.

[0057] Furthermore, the battery cover structure also includes an injection hole 80, which is formed on the cover body 10 for injecting electrolyte into the individual battery cells.

[0058] This embodiment also provides a single-cell battery, which includes the battery cover structure described in any of the above embodiments. By employing the battery cover structure, the single-cell battery can detect the pressure and / or temperature within each cell in real time, thereby enabling timely control when abnormal temperature and / or pressure changes occur, thus improving thermal runaway or thermal propagation and enhancing the safety and lifespan of the single-cell battery with the battery cover structure installed.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery cover structure, characterized in that, Includes a cover plate body (10), a first insulating component (20), an intelligent detection module (40), and two pole posts (30). The first insulating element (20) is disposed on one side of the cover plate body (10), and the two pole posts (30) are disposed at intervals, and each pole post (30) passes through the first insulating element (20) and the cover plate body (10) and is insulated and sealed to the cover plate body (10); one of the two pole posts (30) is a positive pole post and the other is a negative pole post; The intelligent detection module (40) is insulated on the side of the cover plate body (10) facing the first insulating member (20). The intelligent detection module (40) is used to detect the pressure and / or temperature inside the single cell. The two electrodes of the intelligent detection module (40) are electrically connected to the two pole posts (30) in a one-to-one correspondence.

2. The battery cover structure according to claim 1, characterized in that, The intelligent detection module (40) includes: The intelligent detection body (41) can be electrically connected to an external control system to detect and transmit pressure and / or temperature signals within the individual battery cells. Two electrode connecting lines (42) are electrically connected at one end to the intelligent detection body (41), and each end is provided with an electrode to be electrically connected to the two pole posts (30) respectively.

3. The battery cover structure according to claim 2, characterized in that, The intelligent detection body (41) includes a pressure detection element, which is used to detect and transmit pressure signals within the individual battery cell; and / or, The intelligent detection body (41) includes a temperature detection element, which is used to detect and transmit the temperature signal inside the single battery cell.

4. The battery cover structure according to claim 2, characterized in that, The cover plate body (10) has two pole hole (101), and the pole (30) is insulated and sealed through the pole hole (101) one by one. The cover plate body (10) has a mounting groove (102) on the side facing the first insulating component (20). The intelligent detection module (40) is disposed in the mounting groove (102), and the mounting groove (102) is connected to the pole hole (101).

5. The battery cover structure according to claim 4, characterized in that, The mounting slot (102) includes: The first groove (1021) is in which the intelligent detection body (41) is disposed; Two second grooves (1022) are connected at one end to the first groove (1021) and at the other end to the two pole holes (101) respectively. Two electrode connecting lines (42) are respectively arranged in the two second grooves (1022).

6. The battery cover structure according to claim 1, characterized in that, It also includes a sealing element (50), which is sleeved on the outer periphery of the pole post (30) to insulate and seal the pole post (30) from the cover plate body (10).

7. The battery cover structure according to claim 1, characterized in that, It also includes a second insulating member (60), which is sandwiched between the pole post (30) and the cover plate body (10) on the side away from the first insulating member (20).

8. The battery cover structure according to any one of claims 1-7, characterized in that, The cover plate body (10) has an insulating film on the side facing the first insulating member (20), and the insulating film covers at least the contact area between the cover plate body (10) and the intelligent detection module (40).

9. The battery cover structure according to claim 8, characterized in that, The insulating film and the cover plate body (10) are integrally stamped using coated aluminum material; or the cover plate body (10) is stamped and the insulating film is sprayed onto the cover plate body (10).

10. A single-cell battery, characterized in that, Includes the battery cover structure as described in any one of claims 1-9.

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