Sensor protection structure, battery top cover and battery

Abstract

The utility model relates to the technical field of batteries, and discloses a sensor protection structure, a battery top cover and a battery, and the sensor protection structure comprises a sensor assembly and a protection assembly. An air inlet hole is formed in the bottom of the sensor assembly, a sensor is arranged in the sensor assembly, a communication connecting piece is horizontally arranged on the side face of the sensor assembly, and the communication connecting piece is electrically connected with the sensor; the protection assembly is connected with the sensor assembly and surrounds the communication connecting piece. According to the sensor protection structure provided by the utility model, the problem of damage caused by rubbing between the communication connecting piece and an external object or influence of external force is avoided, and the normal use of the sensor assembly is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a sensor protection structure, a battery top cover, and a battery. Background Technology

[0002] Currently, with the continuous development of the energy storage industry, lithium-ion batteries have been widely used due to their high capacity and other excellent characteristics. A lithium-ion battery mainly consists of an aluminum casing and a top cover. The aluminum casing has an opening, and the top cover seals the opening in the aluminum casing, thus forming a closed energy storage system. Within this closed system are corresponding energy storage structures and materials.

[0003] In existing technologies, to actively monitor changes in internal air pressure and temperature of a battery, sensors are typically used to obtain information on these changes. Specifically, one approach is to place the sensor inside the battery, but this occupies internal space and affects battery capacity. Another approach is to place the sensor on the battery top cover and connect it via a connector to transmit signals; however, this method exposes the connector, making it susceptible to damage from external forces and thus affecting the normal operation of the sensor. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a sensor protection structure, a battery top cover, and a battery, which prevents the communication connector from being scratched by external objects or affected by external forces, thus avoiding damage and further ensuring the normal use of the sensor assembly.

[0005] The technical effects to be achieved by this utility model are realized through the following aspects:

[0006] In a first aspect, this utility model provides a sensor protection structure, comprising:

[0007] A sensor assembly, wherein an air inlet is provided at the bottom of the sensor assembly, a sensor is disposed inside the sensor assembly, and a horizontally arranged communication connector is provided on the side of the sensor assembly, the communication connector being electrically connected to the sensor; and

[0008] A protective component, which is connected to the sensor assembly and surrounds the communication connector.

[0009] In some implementations, the protection component includes two first protective walls, which are respectively connected to the sensor component and surround opposite sides of the communication connector.

[0010] In this implementation, the two first protective walls protect the opposite sides of the communication connector, preventing damage to the communication connector caused by external forces on the opposite sides.

[0011] In some implementations, a guide groove is provided on the inner side of the first protective wall, which is parallel to the communication connector.

[0012] In this implementation, when the external signal receiver is electrically connected to the communication connector, the external signal receiver moves along the guide groove opened on the first protective wall and eventually becomes electrically connected to the communication connector, which improves the accuracy and convenience of the external signal receiver being electrically connected to the communication connector.

[0013] In some implementations, the protection component further includes a second protection wall, which is connected to the sensor assembly and the two first protection walls respectively and surrounds the communication connector above.

[0014] In this implementation, the second protective wall is arranged above the communication connector, and its two ends are respectively connected to the first protective wall, thereby protecting the opposite sides and the top of the communication connector, thus improving the protection reliability of the protective component, and making the overall structure more compact.

[0015] In some implementations, the protection component further includes a third protection wall, which is connected to the sensor component and the two first protection walls respectively and surrounds the lower part of the communication connector.

[0016] In some implementations, the inner side of the second protective wall and / or the inner side of the third protective wall are provided with a snap-fit ​​structure for fixing an external signal receiver.

[0017] In this implementation, the snap-fit ​​structure is used to fix the external signal receiver, thereby improving the electrical connection stability between the external signal receiver and the communication connector.

[0018] In some implementations, the snap-fit ​​structure includes snap-fit ​​holes formed in the second protective wall and / or the third protective wall.

[0019] In some implementations, the sensor assembly includes a gas transmission section and a signal acquisition section. The signal acquisition section is mounted on the gas transmission section, the air inlet is located at the bottom of the gas transmission section, the sensor is located inside the signal acquisition section, and the communication connector is horizontally located on the side of the signal acquisition section.

[0020] Secondly, this utility model provides a battery top cover, comprising:

[0021] The top cover body has a through hole; and

[0022] The aforementioned sensor protection structure; the sensor assembly is mounted on the through hole and sealed to the top cover body, and the sensor communicates with the through hole through the air inlet.

[0023] Thirdly, this utility model provides a battery, comprising:

[0024] The housing includes a receiving cavity with an opening;

[0025] Electrode assemblies are installed within the accommodating cavity; and

[0026] The aforementioned battery top cover; the battery top cover closes to the opening.

[0027] In summary, this utility model has at least the following advantages:

[0028] The sensor protection structure provided by this utility model has an air inlet at the bottom of the sensor assembly for connecting to the internal cavity of the battery. The sensor assembly contains a sensor, and a communication connector is horizontally arranged on its side. The communication connector is electrically connected to both the sensor and an external signal receiver. This allows the sensor to sense the internal air pressure and / or temperature information of the battery through the air inlet and transmit this information back to the external signal receiver via the communication connector. The signal receiver is connected to the battery management system via wired or wireless means, thereby achieving the purpose of actively monitoring the internal air pressure and / or temperature information of the battery. Because the communication connector is horizontally arranged on the side of the sensor assembly, and the protection component is connected to the sensor assembly and surrounds the communication connector, the protection component can protect the communication connector, preventing it from being scratched by external objects or subjected to external forces, thus avoiding damage and further ensuring the normal use of the sensor assembly. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the sensor protection structure in Example 1;

[0030] Figure 2 for Figure 1 The diagram shows the structure of the sensor assembly.

[0031] Figure 3 This is another schematic diagram of the sensor protection structure of Example 1;

[0032] Figure 4 This is a schematic diagram of the battery top cover in Example 2;

[0033] Figure 5 This is a schematic diagram of the battery structure in Example 3.

[0034] Marked in the image:

[0035] 1. Sensor protection structure;

[0036] 10. Sensor assembly; 11. Air inlet; 12. Sensor; 13. Communication connector; 14. Gas transmission unit; 15. Signal acquisition unit;

[0037] 20. Protective component; 21. First protective wall; 211. Guide groove; 22. Second protective wall; 221. Snap-fit ​​structure; 23. Third protective wall;

[0038] 2. Battery top cover;

[0039] 30. Top cover body; 31. Through hole;

[0040] 3. Battery;

[0041] 40. Shell; 41. Receiving cavity;

[0042] 50. Electrode assembly. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] Example 1:

[0046] Please see the appendix Figure 1 ~Appendix Figure 3 The sensor protection structure 1 of this utility model includes a sensor assembly 10 and a protection assembly 20.

[0047] In this regard, please combine Figure 1 and Figure 2 , Figure 1 and Figure 2The diagram illustrates the structural relationship between the sensor assembly 10 and the protection assembly 20 in this embodiment of the present invention. Specifically, the sensor assembly 10 has an air inlet 11 at its bottom, a sensor 12 is disposed inside the sensor assembly 10, and a horizontally arranged communication connector 13 is disposed on the side of the sensor assembly 10, which is electrically connected to the sensor 12; the protection assembly 20 is connected to the sensor assembly 10 and surrounds the communication connector 13.

[0048] In this embodiment, the air inlet 11 at the bottom of the sensor assembly 10 is used to connect to the internal cavity of the battery, and the communication connector 13 is used to connect to an external signal receiver, thereby achieving the purpose of actively acquiring information on the internal air pressure and / or temperature of the battery. Specifically, the sensor 12 senses the internal air pressure and / or temperature information of the battery through the air inlet 11 in the sensor assembly 10. Since the communication connector 13 is electrically connected to both the sensor 12 and the external signal receiver, the sensor 12 can feed back the sensed information to the external signal receiver through the communication connector 13, thereby ensuring the reliability of the overall structure. Furthermore, the protective component 20 is connected to the sensor assembly 10 and surrounds the communication connector 13, thereby protecting the communication connector 13 from scratches or external forces that could cause damage, thus ensuring the normal operation of the sensor assembly 10. The communication connector 13 is horizontally positioned on the side of the sensor assembly 10, and the protective component 20 surrounds it, making the overall structure more compact while providing protection, thus preventing damage to both the protective component 20 and the communication connector 13 from external forces. Preferably, the fixed ends of the communication connector 13 and the protective component 20 are horizontally connected to the sensor assembly 10, and the length from the fixed end to the free end of the protective component 20 is greater than the length from the fixed end to the free end of the communication connector 13.

[0049] The aforementioned sensor protection structure 1 has an air inlet 11 at the bottom of the sensor assembly 10 for connecting to the internal cavity of the battery. The sensor assembly 10 contains a sensor 12 and a horizontally arranged communication connector 13 on its side. The communication connector 13 is electrically connected to the sensor 12 and an external signal receiver, allowing the sensor 12 to sense the internal air pressure and / or temperature information of the battery through the air inlet 11 and transmit this information to the external signal receiver via the communication connector 13. The signal receiver is connected to the battery management system via wired or wireless means, thereby achieving the purpose of actively monitoring the internal air pressure and / or temperature information of the battery. Since the communication connector 13 is horizontally arranged on the side of the sensor assembly 10, and the protection component 20 is connected to the sensor assembly 10 and surrounds the communication connector 13, the protection component 20 can protect the communication connector 13, preventing it from being scratched by external objects or subjected to external forces, thus ensuring the normal use of the sensor assembly 10.

[0050] In some preferred embodiments, please refer to Figure 3 , Figure 3 The diagram illustrates the structural relationship between the first protective wall 21 and the communication connector 13 in this embodiment of the invention. Specifically, the protective component 20 includes two first protective walls 21, which are respectively connected to the sensor component 10 and surround the opposite sides of the communication connector 13. The two first protective walls 21 respectively protect the opposite sides of the communication connector 13, preventing damage to the communication connector 13 caused by external forces from the opposite sides.

[0051] In some preferred embodiments, a guide groove 211 parallel to the communication connector 13 is formed on the inner surface of the first protective wall 21. The guide groove 211 is used to guide the external signal receiver. Specifically, when the external signal receiver is electrically connected to the communication connector 13, the external signal receiver moves along the guide groove 211 formed on the first protective wall 21 and finally connects to the communication connector 13, improving the accuracy and convenience of the electrical connection between the external signal receiver and the communication connector 13. Preferably, the communication connector 13 can be a pin, and the external signal receiver can be a plug.

[0052] In some preferred embodiments, the protection component 20 further includes a second protective wall 22, which is connected to the sensor component 10 and the two first protective walls 21 respectively and surrounds the communication connector 13. The second protective wall 22 surrounds the communication connector 13 and its two ends are connected to the first protective walls 21 respectively, thereby protecting the opposite sides and top of the communication connector 13, thus improving the protection reliability of the protection component 20 and making the overall structure more compact.

[0053] In some preferred embodiments, the protective component 20 further includes a third protective wall 23, which is connected to the sensor component 10 and the two first protective walls 21 respectively and surrounds the lower part of the communication connector 13. The third protective wall 23 surrounds the lower part of the communication connector 13, and its two ends are respectively connected to the first protective walls 21, thereby protecting the opposite sides and the lower part of the communication connector 13. Of course, in this preferred embodiment, the protective component 20 preferably includes only the first protective walls 21 and the second protective walls 22, and does not include the third protective wall 23. When the sensor protection structure 1 is not installed on the top cover body 30 and is being debugged, no protective wall is provided below the communication connector 13, which facilitates debugging. The communication connector 13 can be directly accessed from below through a fixture, thereby connecting to external debugging equipment. After the sensor protection structure 1 is installed on the top cover body 30, the top cover body 30 can replace the protective wall to protect the communication connector 13.

[0054] In some preferred embodiments, the inner surface of the second protective wall 22 and / or the inner surface of the third protective wall 23 are provided with a snap-fit ​​structure 221 for fixing an external signal receiver. The snap-fit ​​structure 221 is used to fix the external signal receiver, thereby improving the electrical connection stability between the external signal receiver and the communication connector 13. Specifically, the external signal receiver moves along the guide groove 211 opened on the inner surface of the first protective wall 21 and is finally electrically connected to the communication connector 13. At the same time, the snap-fit ​​structure 221 provided on the inner surface of the second protective wall 22 and / or the inner surface of the third protective wall 23 engages with the snap-fit ​​structure on the external signal receiver, thereby fixing the external signal receiver.

[0055] In some preferred embodiments, the snap-fit ​​structure 221 includes snap-fit ​​holes formed on the second protective wall 22 and / or the third protective wall 23. A corresponding snap-fit ​​portion is provided on the external signal receiver, which engages with the snap-fit ​​hole to secure the external signal receiver to the second protective wall 22 and / or the third protective wall 23. This improves the connection stability between the external signal receiver and the communication connector 13, preventing the external signal receiver from detaching from the communication connector 13 during operation and thus affecting the normal use of the sensor assembly 10.

[0056] In some more preferred embodiments, please refer to Figure 2 , Figure 2The diagram illustrates the structural relationship between the gas transmission unit 14 and the signal acquisition unit 15 in this embodiment of the invention. Specifically, the sensor assembly 10 includes a gas transmission unit 14 and a signal acquisition unit 15. The signal acquisition unit 15 is mounted on the gas transmission unit 14, an air inlet 11 is located at the bottom of the gas transmission unit 14, a sensor 12 is located inside the signal acquisition unit 15, and a communication connector 13 is horizontally located on the side of the signal acquisition unit 15. The gas transmission unit 14 is used to connect to the internal cavity of the battery. The signal acquisition unit 15 is mounted on the gas transmission unit 14 and has the sensor 12 inside. The sensor 12 acquires information about the internal gas pressure and / or temperature of the battery through the air inlet on the gas transmission unit 14 and feeds this information back to the external signal receiver through the communication connector 13, thereby ensuring the normal operation of the sensor assembly 10.

[0057] Example 2:

[0058] This embodiment, based on the above embodiment, provides a battery top cover 2. Please refer to the attached document. Figure 4 .

[0059] A battery top cover 2 includes a top cover body 30 and the aforementioned sensor protection structure 1.

[0060] The top cover body 30 has a through hole 31; the sensor assembly 10 is installed on the through hole 31 and is sealed to the top cover body 30; the sensor 12 is connected to the through hole 31 through the air inlet 11.

[0061] In this embodiment, the sensor assembly 10 covers the through hole 31 and is sealed to the top cover body 30 to ensure airtightness between the top cover body 30 and the sensor assembly 10. The top cover body 30 is used to install on the opening of the battery casing. The sensor 12 is connected to the through hole 31 through the air inlet 11, thereby enabling the monitoring of the internal air pressure and / or temperature of the battery, realizing active monitoring of the internal air pressure and / or temperature of the battery, and thus achieving the purpose of active safety.

[0062] Example 3:

[0063] This embodiment, based on the above embodiments, provides a battery 3. Please refer to the appendix. Figure 5 .

[0064] A battery 3 includes a housing 40, an electrode assembly 50, and the aforementioned battery top cover 2.

[0065] The housing 40 includes a receiving cavity 41 with an opening; an electrode assembly 50 is installed in the receiving cavity 41; and a battery top cover 2 closes to the opening.

[0066] In this embodiment, the electrode assembly 50 is a cell formed by winding or stacking a separator, a positive electrode, and a negative electrode. The battery 3 described above can be a lithium-ion battery or a sodium-ion battery.

[0067] The battery 3 of this invention has an air inlet 11 at the bottom of the sensor assembly 10 for connecting to the internal cavity of the battery 3. The sensor assembly 10 has a sensor 12 inside and a communication connector 13 horizontally arranged on its side. The communication connector 13 is electrically connected to the sensor 12 and an external signal receiver, so that the sensor 12 can sense the air pressure and / or temperature information inside the battery 3 through the air inlet 11 and feed this information back to the external signal receiver through the communication connector 13. The signal receiver is connected to the battery management system by wired or wireless means, thereby realizing the purpose of actively monitoring the air pressure and / or temperature information inside the battery. Since the communication connector 13 is horizontally arranged on the side of the sensor assembly 10, and the protective component 20 is connected to the sensor assembly 10 and surrounds the communication connector 13, the protective component 20 can protect the communication connector 13, avoiding the communication connector 13 from being scratched by external objects or affected by external forces, thus preventing damage and further ensuring the normal use of the sensor assembly 10.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 mechanical connection or an electrical connection; 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 according to the specific circumstances.

[0069] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, 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," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0070] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0071] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may 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" the first 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 first 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.

[0072] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A sensor protection structure, characterized in that, include: A sensor assembly (10) is provided with an air inlet (11) at the bottom of the sensor assembly (10), a sensor (12) is provided inside the sensor assembly (10), and a horizontally arranged communication connector (13) is provided on the side of the sensor assembly (10), and the communication connector (13) is electrically connected to the sensor (12). and A protection component (20) is connected to the sensor component (10) and surrounds the communication connector (13).

2. The sensor protection structure according to claim 1, characterized in that, The protection component (20) includes two first protective walls (21), which are respectively connected to the sensor component (10) and surround the communication connector (13) on opposite sides.

3. The sensor protection structure according to claim 2, characterized in that, The inner side of the first protective wall (21) is provided with a guide groove (211) that is parallel to the communication connector (13).

4. The sensor protection structure according to claim 2, characterized in that, The protection component (20) further includes a second protection wall (22), which is connected to the sensor component (10) and the two first protection walls (21) respectively and surrounds the communication connector (13).

5. The sensor protection structure according to claim 4, characterized in that, The protection component (20) further includes a third protection wall (23), which is connected to the sensor component (10) and the two first protection walls (21) respectively and surrounds the communication connector (13) below.

6. The sensor protection structure according to claim 4 or 5, characterized in that, The inner side of the second protective wall (22) and / or the inner side of the third protective wall (23) are provided with a snap-fit ​​structure (221) for fixing an external signal receiver.

7. The sensor protection structure according to claim 6, characterized in that, The snap-fit ​​structure (221) includes snap-fit ​​holes formed on the second protective wall (22) and / or the third protective wall (23).

8. The sensor protection structure according to claim 1, characterized in that, The sensor assembly (10) includes a gas transmission section (14) and a signal acquisition section (15). The signal acquisition section (15) is mounted on the gas transmission section (14). The air inlet (11) is located at the bottom of the gas transmission section (14). The sensor (12) is located inside the signal acquisition section (15). The communication connector (13) is horizontally located on the side of the signal acquisition section (15).

9. A battery top cover, characterized in that, include: The top cover body (30) has a through hole (31); and The sensor protection structure (1) according to any one of claims 1 to 8; the sensor assembly (10) is covered and installed on the through hole (31) and sealed to the top cover body (30), and the sensor (12) is connected to the through hole (31) through the air inlet (11).

10. A battery, characterized in that, include: The housing (40) includes a receiving cavity (41) with an opening; Electrode assembly (50) is installed in the accommodating cavity (41); and The battery top cover (2) of claim 9; the battery top cover (2) covers the opening.

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