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 battery insulating part and a battery pole assembly, the first battery insulating part is arranged on one side of the cover plate body, and the battery pole assembly penetrates through the first battery insulating part and the cover plate body and is connected with the cover plate body in an insulating and sealing manner; the battery cover plate structure further comprises an intelligent detection module, the intelligent detection module is arranged between the cover plate body and the first battery insulating part in an insulating manner, and the intelligent detection module is used for detecting the pressure and / or temperature in the single battery; the two external connection parts of the intelligent detection module penetrate through the cover plate body in an insulated and sealed mode so as to be connected with an external power source. The internal pressure and temperature of the battery can be monitored in real time, the detection module is independently powered, and the internal space of the battery is not 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 the detection module is independently powered and does not occupy the internal space of the battery.

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

[0006] A battery cover structure includes a cover body, a first battery insulator, and a battery terminal assembly. The first battery insulator is disposed on one side of the cover body, and the battery terminal assembly passes through the first battery insulator and the cover body and is insulated and sealed to the cover body.

[0007] It also includes an intelligent detection module, which is insulated between the cover plate body and the first battery insulating component. The intelligent detection module is used to detect the pressure and / or temperature inside a single battery cell. The two external connection parts of the intelligent detection module are insulated and sealed through the cover plate body to connect to an external power source.

[0008] Optionally, the above-mentioned intelligent detection module includes:

[0009] The intelligent detection body is insulated between the cover plate body and the first battery insulating component. The intelligent detection body can be electrically connected to an external control system. The intelligent detection body is used to detect and transmit the pressure signal and / or temperature signal inside the single battery cell.

[0010] Both electrode connection components are electrically connected to the aforementioned intelligent detection body. The two electrode connection components are spaced apart and extend out of the aforementioned cover plate body in an insulated and sealed manner to form two external connection parts.

[0011] 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

[0012] 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.

[0013] Optionally, the electrode connection assembly includes:

[0014] One end of the electrode terminal is electrically connected to the aforementioned intelligent detection body, and the other end extends out of the aforementioned cover plate body in an insulated and sealed manner.

[0015] An electrode insulating element, at least a portion of which is sleeved on the outer periphery of the aforementioned electrode terminal;

[0016] An electrode seal is fitted over the remaining portion of the outer periphery of the electrode terminal and partially sandwiched between the cover plate body and the outer periphery of the electrode terminal.

[0017] Optionally, the electrode terminals and the cover plate body are riveted or glued together.

[0018] Optionally, the intelligent detection module further includes a connecting wire that connects the electrode connection assembly and the intelligent detection body.

[0019] Optionally, the cover plate body has a mounting groove on the side facing the first battery insulator, and the intelligent detection module is disposed in the mounting groove.

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

[0021] Optionally, the insulating layer and the cover plate body are integrally stamped using coated aluminum material; or the cover plate body is stamped and the insulating layer 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 the detection module is independently powered and does not occupy the internal space of the 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 between the cover body and the first battery insulation component, resulting in a compact structure that does not occupy internal battery space, thus maximizing space utilization. The intelligent detection module is connected to an external power source via two external connection points to ensure a continuous power supply. Separating the power supply path of the intelligent detection module from that of the single battery also prevents problems with the single battery from affecting the detection module's operation, thereby improving the reliability 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] Figure 4 This is a cross-sectional view of the battery cover structure provided in a specific embodiment of this utility model;

[0031] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0032] Figure 6 yes Figure 4 A magnified view of a section at point B.

[0033] In the picture:

[0034] 10. Cover plate body; 101. Mounting groove; 102. Electrode mounting hole; 103. Electrode mounting hole; 104. Press-fit flange;

[0035] 20. First battery insulating component; 21. First insulating component; 22. Second insulating component;

[0036] 30. Battery terminal assembly; 31. Battery terminal; 32. Second battery insulator; 33. Battery seal; 34. Riveting block;

[0037] 40. Intelligent detection module; 41. Intelligent detection body; 42. Electrode connection assembly; 421. Electrode terminal; 422. Electrode insulation component; 423. Electrode sealing component; 43. Connecting wire;

[0038] 50. Explosion-proof valve; 51. Explosion-proof membrane; 60. Injection port. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The following reference Figures 1 to 6 This invention introduces the battery cover structure and individual battery cell provided by this utility model.

[0044] 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.

[0045] Please refer to Figures 1 to 2 Specifically, the battery cover structure includes a cover body 10, a first battery insulator 20, and a battery terminal assembly 30. The first battery insulator 20 is disposed on one side of the cover body 10, and the battery terminal assembly 30 passes through the first battery insulator 20 and the cover body 10 and is insulated and sealed to the cover body 10. The battery terminal assembly 30 enables the external electrical connection of the cell of a single battery.

[0046] Furthermore, the battery cover structure also includes an intelligent detection module 40, which is insulated between the cover body 10 and the first battery insulating member 20. The intelligent detection module 40 is used to detect the pressure and / or temperature inside the individual battery cells. The two external connection parts of the intelligent detection module 40 are insulated and sealed through the cover body 10 to connect to an external power source.

[0047] 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 housing the cover structure. 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 between the cover body 10 and the first battery insulator 20, resulting in a compact structure that does not occupy internal battery space, maximizing space utilization. The intelligent detection module 40 is connected to an external power source via two external connection points, ensuring a continuous power supply. Separating the power supply path of the intelligent detection module 40 from that of the individual cells also prevents problems with the individual cells from affecting the module's detection capabilities, thus improving the reliability of the battery cover structure.

[0048] In this embodiment, the cover plate body 10 has one or two battery terminal assembly 30, which needs to be adapted according to the design of the individual battery, and is not specifically limited here. For example, when the cover plate body 10 has one battery terminal assembly 30, the battery terminal assembly 30 can be a positive electrode or a negative electrode; when the cover plate body 10 has two battery terminal assemblies 30, one of the two battery terminal assemblies 30 is a positive electrode and the other is a negative electrode.

[0049] Optionally, the first electrode insulating member 422 can be separately configured 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 electrode insulating member 422 is separately configured, including a first insulating member 21 and a second insulating member 22, which are connected in a limiting manner to form insulation of one side of the cover plate body 10.

[0050] Please refer to Figures 1 to 5 Specifically, the battery terminal assembly 30 includes a battery terminal 31, a second battery insulator 32, and a battery seal 33. The battery terminal 31 passes through the first battery insulator 20 and the cover plate body 10 and is fixedly connected to the cover plate body 10. The second battery insulator 32 is sleeved on the outer periphery of the side of the battery terminal 31 away from the first battery insulator 20. The seal is sleeved on the battery terminal 31, and its two ends are respectively connected to the first battery insulator 20 and the second battery insulator 32 to form a sealed insulating part, thereby achieving sealed insulation between the battery terminal 31 and the cover plate body 10.

[0051] Optionally, the cover plate body 10 has a terminal mounting hole 102, through which the battery terminal 31 passes to achieve internal and external connection of the battery terminal 31.

[0052] Specifically, the battery terminal 31 and the cover plate body 10 are riveted or glued together. More specifically, the battery terminal 31 passes through the first battery insulator 20, the cover plate body 10, the battery seal 33, and the second battery insulator 32, and is fixed to the cover plate body 10 by forming a riveted part through its own riveting; or, it also includes a riveting block 34, in which the battery terminal 31 passes through the first battery insulator 20, the cover plate body 10, the battery seal 33, the second battery insulator 32, and the riveting block 34, and is riveted to the riveting block 34 to fix it to the cover plate body 10; or, the battery terminal 31 passes through the first battery insulator... 20. The cover plate body 10, battery seal 33, and second battery insulator 32 are included, with the cover plate body 10 being covered by the second battery insulator 32 and fixed to the cover plate body 10. That is, the cover plate body 10 and the battery terminal 31 are connected by adhesive bonding through the second battery insulator 32. Alternatively, the cover plate body 10 has a flange, through which the battery terminal 31 passes, passing through the first battery insulator 20, the cover plate body 10, the battery seal 33, and the second battery insulator 32, and is riveted to the cover plate body 10 by the flange. Both methods achieve a fixed connection between the battery terminal 31 and the cover plate body 10.

[0053] For example, the battery terminal assembly 30 in this embodiment further includes a riveting block 34. The battery terminal 31 passes through the first battery insulator 20, the cover plate body 10, the battery seal 33, the second battery insulator 32, and the riveting block 34, and is riveted to the riveting block 34. Of course, in other embodiments, the fixing method of the battery terminal 31 can be selected and replaced according to actual needs, and no specific limitation is made here.

[0054] Please refer to Figures 1 to 6 In this embodiment, the intelligent detection module 40 includes an intelligent detection body 41 and two electrode connection assemblies 42. The intelligent detection body 41 is insulated between the cover plate body 10 and the first battery insulator 20. The intelligent detection body 41 is electrically connected to an external control system and is used to detect and transmit pressure and / or temperature signals within a single battery cell. The two electrode connection assemblies 42 are both electrically connected to the intelligent detection body 41. The two electrode connection assemblies 42 are spaced apart and extend insulated and sealed out of the cover plate body 10 to form two external connection parts. Power is supplied to the intelligent detection body 41 through the two electrode connection assemblies 42, thereby ensuring its real-time detection and transmission of pressure and / or temperature signals within the single battery cell.

[0055] Optionally, the intelligent detection unit 41 is connected to the external control system via wireless communication. This enables real-time monitoring of the internal pressure and temperature of individual cells without the need for additional electrical connections, thus 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 monitoring of the internal pressure and temperature of individual cells. The design can be adapted to the specific space and requirements, 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.

[0056] Optionally, the cover plate body 10 has a mounting groove 101 on the side facing the first battery insulator 20, and the intelligent detection module 40 is disposed in the mounting groove 101. This means that the setting of the intelligent detection module 40 only changes the structure of the cover plate body 10, without changing other structures such as the first battery insulator 20, thus simplifying the design change time and steps.

[0057] 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, allowing 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.

[0058] 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.

[0059] Specifically, the electrode connection assembly 42 includes an electrode terminal 421, an electrode insulator 422, and an electrode seal 423. One end of the electrode terminal 421 is electrically connected to the intelligent detection body 41, and the other end extends out of the cover plate body 10 in an insulated and sealed manner. The electrode insulator 422 is sleeved on at least a portion of the outer periphery of the electrode terminal 421. The electrode seal 423 is sleeved on the remaining portion of the outer periphery of the electrode terminal 421 and is partially sandwiched between the cover plate body 10 and the outer periphery of the electrode terminal 421. This arrangement forms the external connection part of the intelligent detection module 40, and the external connection part is insulated and sealed with the cover plate body 10, improving the safety of the battery cover structure.

[0060] Optionally, the cover plate body 10 is provided with an electrode mounting hole 103, and the electrode terminal 421 passes through the electrode mounting hole 103 to realize its installation and internal and external electrical connection.

[0061] Specifically, the electrode terminal 421 and the cover plate body 10 can be fixedly connected by riveting or adhesive bonding. It should be noted that the connection method between the electrode terminal 421 and the cover plate body 10 can be directly referred to the four connection methods between the battery terminal 31 and the cover plate body 10 mentioned above, and will not be repeated here.

[0062] In this embodiment, the cover plate body 10 is provided with a press-fit flange 104. The press-fit flange 104 is located near the outer periphery of the electrode mounting hole 103. The electrode terminal 421 passes through the cover plate body 10, the electrode seal 423 and the electrode insulator 422, and is riveted and fixed to the cover plate body 10 by the press-fit flange 104. The installation method is reliable and does not require the bottom of the electrode terminal 421 to extend radially outward for fixing. This allows for better isolation between the electrode terminal 421 and the cover plate body 10, avoiding short circuits between the electrode connection assembly 42 and the battery terminal assembly 30, and improving the reliability and safety of the battery cover plate structure.

[0063] Furthermore, an insulating layer is provided on the side of the cover plate body 10 facing the first battery insulator 20. The insulating layer 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.

[0064] Specifically, the insulating layer and the cover plate body 10 are integrally stamped using coated aluminum material; or the cover plate body 10 is stamped and the insulating layer is sprayed onto the cover plate body 10, both of which can achieve the setting of the insulating layer.

[0065] Furthermore, the intelligent detection module 40 also includes a connecting line 43, which is connected between the electrode connection component 42 and the intelligent detection body 41, thereby realizing the electrical connection between the intelligent detection body 41 and the electrode connection component 42.

[0066] In this embodiment, the battery cover structure further includes an explosion-proof valve 50, which is disposed on the cover body 10 to release pressure when the internal pressure of the battery is too high. Optionally, the battery cover structure also includes an explosion-proof film 51, which is attached to the side of the explosion-proof valve 50 away from the inside of the battery to protect the explosion-proof valve 50 from damage when not in use.

[0067] Furthermore, the battery cover structure also includes an injection hole 60, which is formed on the cover body 10 for injecting electrolyte into the individual battery cells.

[0068] 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.

[0069] 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, It includes a cover plate body (10), a first battery insulator (20) and a battery terminal assembly (30). The first battery insulator (20) is disposed on one side of the cover plate body (10), and the battery terminal assembly (30) passes through the first battery insulator (20) and the cover plate body (10) and is insulated and sealed to the cover plate body (10). It also includes an intelligent detection module (40), which is insulated between the cover plate body (10) and the first battery insulating component (20). The intelligent detection module (40) is used to detect the pressure and / or temperature inside the single battery cell. The two external connection parts of the intelligent detection module (40) are insulated and sealed through the cover plate body (10) to connect to an external power source.

2. The battery cover structure according to claim 1, characterized in that, The intelligent detection module (40) includes: The intelligent detection body (41) is insulated between the cover plate body (10) and the first battery insulating member (20). The intelligent detection body (41) can be electrically connected to an external control system. The intelligent detection body (41) is used to detect and transmit the pressure signal and / or temperature signal in the single battery cell. Two electrode connection components (42) are electrically connected to the intelligent detection body (41). The two electrode connection components (42) are spaced apart and extend out of the cover plate body (10) in an insulated and sealed manner to form two external connection parts.

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 electrode connection assembly (42) includes: The electrode terminal (421) is electrically connected to the intelligent detection body (41) at one end and extends out of the cover plate body (10) in an insulated and sealed manner at the other end. An electrode insulating member (422) is sleeved on at least a portion of the outer periphery of the electrode terminal (421); The electrode seal (423) is fitted over the remaining portion of the outer periphery of the electrode terminal (421) and is partially sandwiched between the cover plate body (10) and the outer periphery of the electrode terminal (421).

5. The battery cover structure according to claim 4, characterized in that, The electrode terminal (421) and the cover plate body (10) are riveted or glued together.

6. The battery cover structure according to claim 2, characterized in that, The intelligent detection module (40) also includes a connecting line (43), which is connected between the electrode connection assembly (42) and the intelligent detection body (41).

7. The battery cover structure according to claim 1, characterized in that, The cover plate body (10) has a mounting groove (101) on the side facing the first battery insulator (20), and the intelligent detection module (40) is disposed in the mounting groove (101).

8. The battery cover structure according to any one of claims 1-7, characterized in that, The cover plate body (10) has an insulating layer on the side facing the first battery insulator (20), and the insulating layer 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 layer and the cover plate body (10) are integrally stamped with coated aluminum material; or the cover plate body (10) is stamped and the insulating layer 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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