Cover plate assembly and battery

Abstract

Provided are a cover plate assembly and a battery. The cover plate assembly is mounted on a housing (201), the housing (201) having an accommodating cavity. The cover plate assembly comprises: a cover plate (101), the cover plate (101) being provided with a first mounting hole (1013) in communication with the accommodating cavity; an acquisition member (240), which is located in the accommodating cavity and is used for obtaining parameter information in the housing (201); a lower connector (103) having a first end located in the first mounting hole (1013), and a second end communicatively connected to the acquisition member (240); and an upper connector (102) having a first end detachably and communicatively connected to the first end of the lower connector (103), and a second end passing through the first mounting hole (1013).

Description

Cover assembly and battery

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 15, 2023, with application number 202310716945.2. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a cover assembly and a battery. Background Art

[0003] Lithium batteries offer advantages such as compact size, high energy density, long lifespan, and environmental friendliness. They are widely used in industries such as automotive, electronics, and energy storage systems. However, during use, lithium batteries generate heat and gas due to charge and discharge cycles. This high level of heat can significantly impact the battery's operation and maintenance, while the generated gas can cause the battery cell to swell. SUMMARY OF THE INVENTION

[0004] Batteries in related technologies cannot monitor data inside the battery in real time, making it difficult to take responsive measures based on real-time situations.

[0005] The present application provides a cover assembly. The cover assembly is mounted on a housing, which has a receiving cavity in which a core pack is mounted. The cover assembly includes a cover, a collection member, a lower connector, and an upper connector. The cover is mounted on the housing, and a first mounting hole is formed on the cover that communicates with the receiving cavity. The collection member is located in the receiving cavity and is used to obtain parameter information within the housing. The first end of the lower connector is located in the first mounting hole, and the second end of the lower connector extends into the receiving cavity and is in communication connection with the collection member. The first end of the upper connector is located in the first mounting hole and is detachably connected to the first end of the lower connector. The second end of the upper connector extends through the first mounting hole.

[0006] The present application also provides a battery. It comprises a battery core pack, a housing, a collection member, a lower connector, and an upper connector. The housing has a receiving cavity, in which the core pack is mounted; a cover is mounted on the housing, and a first mounting hole is formed on the cover, communicating with the receiving cavity; the collection member is located in the receiving cavity and is used to obtain parameter information within the housing; the first end of the lower connector is located in the first mounting hole, the second end of the lower connector extends into the receiving cavity and is in communication connection with the collection member; the first end of the upper connector is located in the first mounting hole and is detachably connected to the first end of the lower connector; the second end of the upper connector extends through the first mounting hole. Beneficial effects

[0007] The battery cell provided in the present application collects parameter information inside the shell through a collection component, and sends the parameter information collected by the collection component to an external device through an upper connecting component and a lower connecting component, thereby being able to monitor the data inside the battery in real time and then take response measures according to the real-time situation.

[0008] The battery provided in the present application includes a core pack, a shell and the above-mentioned cover assembly. It can collect parameter information inside the shell through the collection part in the cover assembly, and send the parameter information collected by the collection part to an external device through the upper connecting part and the lower connecting part, so as to monitor the data inside the battery in real time and then take response measures according to the real-time situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a schematic structural diagram of a cover plate assembly provided in an embodiment.

[0010] FIG2 is a schematic diagram of a partial structure of a cover plate assembly provided in an embodiment.

[0011] FIG3 is a schematic structural diagram of a first fixing member provided in an embodiment.

[0012] FIG4 is a schematic structural diagram of the upper connecting member provided in the embodiment.

[0013] FIG5 is a schematic structural diagram of the lower connecting member provided in the embodiment.

[0014] FIG6 is an enlarged schematic diagram of point A in FIG1 .

[0015] FIG7 is a schematic cross-sectional view of a portion of the structure of the cover plate assembly provided in the embodiment.

[0016] FIG8 is a schematic cross-sectional view of a partial structure of a cover plate assembly provided in an embodiment.

[0017] FIG9 is a schematic cross-sectional view of the protective cover provided in the embodiment.

[0018] FIG10 is a schematic structural diagram of the shell, core package and collection piece provided in the embodiment.

[0019] Description of reference numerals:

[0020] 101, cover plate; 1011, transfer boss; 1012, seventh sunken portion; 1013, first mounting hole; 1014, fourth sunken portion; 102, upper connector; 1021, first optical fiber; 1022, first housing; 1023, first ferrule; 103, lower connector; 1031, second optical fiber; 1032, second housing; 1033, second ferrule; 1041, first fixing member; 1042, second fixing member; 1043, first sunken portion; 1044, engaging groove; 1045, first sub-hole; 1046, fifth sunken portion; 1047, second flange; 1048. Base portion; 1049. Second sub-hole; 105. Pressing plate; 1051. Clamping portion; 1052. Fourth mounting hole; 106. Protective cover; 1061. Conical body; 1062. First flange; 1063. Sixth sinking portion; 107. Sleeve; 108. Seal; 109. Pole; 110. Liquid injection hole; 111. Explosion-proof valve; 112. Lower plastic; 1121. Third mounting hole; 1122. Second sinking portion; 1123. Third sinking portion; 201. Shell; 202. Core package; 240. Collection component; 241. Sensor; 242. Connecting line. Modes for Carrying Out the Invention

[0021] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0022] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, with the first feature having a higher horizontal height than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, with the first feature having a lower horizontal height than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," "right," "front," and "rear" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and do not have any special meanings.

[0024] Lithium batteries have the advantages of small size, high energy density, long service life, and environmental friendliness, and are widely used in industries such as automobiles, electronics, and energy storage systems. During use, lithium batteries generate heat and gas due to the charge and discharge cycles. The large amount of heat poses a significant problem for the use and maintenance of lithium batteries, and the generated gas causes the battery cells to swell. In related technologies, a heat dissipation system is installed within the battery to dissipate the accumulated heat. However, this system can only dissipate heat passively and cannot obtain information such as the temperature and pressure inside the battery. It is also impossible to monitor internal battery data, such as temperature and pressure, in real time, making it difficult to respond to real-time situations.

[0025] As shown in FIG1 and FIG10 , an embodiment of the present application provides a cover plate assembly for installation on a battery housing 201 . The cover plate assembly includes a cover plate 101 , a collecting member 240 , an upper connecting member 102 , and a lower connecting member 103 .

[0026] The housing 201 has a receiving cavity for receiving the core package 202. The core package 202 is fixedly disposed in the receiving cavity. The cover 101 is mounted on the housing 201. The cover 101 is provided with a first mounting hole 1013 communicating with the receiving cavity.

[0027] The collecting component 240 is located in the receiving cavity, and the collecting component 240 is used to obtain parameter information in the shell 201. The parameter information includes the temperature of the core package 202 and the pressure in the shell 201, wherein the pressure refers to the pressure of the gas in the shell 201 on the shell 201. The first end of the lower connecting member 103 is located in the first mounting hole 1013, and the second end of the lower connecting member 103 extends into the receiving cavity and is communicatively connected to the collecting component 240. The first end of the upper connecting member 102 is located in the first mounting hole 1013 and is detachably connected to the first end of the lower connecting member 103 for communication. That is, the upper connecting member 102 and the lower connecting member 103 are detachably connected and can communicate. The second end of the upper connecting member 102 passes through the first mounting hole 1013 to transmit the parameter information collected by the collecting component 240 to the external device.

[0028] In this application, the parameter information inside the shell 201 is collected by the collection component 240, and the parameter information collected by the collection component 240 is sent to the external device through the upper connecting component 102 and the lower connecting component 103, so that the data inside the battery can be monitored in real time, and response measures can be taken according to the real-time situation.

[0029] In one embodiment, the cover assembly further includes a fixing member. The cover 101 is provided with a transfer boss 1011 . The transfer boss 1011 is provided with a first mounting hole 1013 communicating with the receiving cavity.

[0030] The fixing member is mounted on the cover plate 101 and has a second mounting hole connected to the first mounting hole 1013. The second end of the upper connecting member 102 passes through the first mounting hole 1013 and the second mounting hole to transmit the parameter information collected by the collecting member 240 to an external device.

[0031] In the present application, parameter information inside the shell 201 is collected by the collecting component 240, and the parameter information collected by the collecting component 240 is sent to an external device through the upper connecting component 102 and the lower connecting component 103, and the upper connecting component 102 is fixed to the transfer boss 1011 of the cover plate 101 by a fixing component, so that the data inside the battery can be stably monitored in real time, and response measures can be taken according to the real-time situation.

[0032] As shown in Figures 1, 2, and 3, in one embodiment, a cover plate assembly is mounted on a housing 201. The cover plate assembly includes a cover plate 101, a collection member 240, a lower connector 103, an upper connector 102, and a fixing member. The housing 201 has a receiving cavity, within which the core package 202 is fixedly disposed. The cover plate 101 is mounted on the housing 201 and is provided with a transfer boss 1011. The transfer boss 1011 has a first mounting hole 1013 that communicates with the receiving cavity.

[0033] The fixing member includes a first fixing member 1041 and a second fixing member 1042. The first fixing member 1041 is sleeved onto the transfer boss 1011. If the first fixing member 1041 has an inner cavity, the transfer boss 1011 is located in the inner cavity. The edge of the first fixing member 1041 is welded to the cover plate 101 to secure the first fixing member 1041 to the cover plate 101. The first fixing member 1041 is provided with a first sub-hole 1045 that communicates with the first mounting hole 1013.

[0034] In some embodiments, the first fixing member 1041 may be engaged with the transfer boss 1011 to further prevent the first fixing member 1041 from rotating relative to the transfer boss 1011 .

[0035] In some embodiments, the first fixing member 1041 includes a base portion 1048 and a second flange 1047. The base portion 1048 is provided with external threads, and the second flange 1047 is disposed around the base portion 1048. The cover plate 101 also includes a seventh sunken portion 1012, which is disposed around the adapter boss 1011. The second flange 1047 is located within the seventh sunken portion 1012 and is welded to the cover plate 101. It will be appreciated that in some embodiments, the cover plate may not be provided with the adapter boss 1011, and the first fixing member 1041 may be directly connected to the cover plate.

[0036] The second fixing member 1042 is sleeved onto the first fixing member 1041 and is detachably connected to the first fixing member 1041. For example, the outer wall of the first fixing member 1041 is provided with external threads, and the inner wall of the second fixing member 1042 is provided with internal threads, so that the first fixing member 1041 and the second fixing member 1042 are threadedly connected. The second fixing member 1042 defines a second sub-hole 1049 that communicates with the first sub-hole 1045. Therefore, in this embodiment, the second mounting hole includes the first sub-hole 1045 and the second sub-hole 1049. In some embodiments, the second fixing member 1042 can also be snap-connected to the first fixing member 1041.

[0037] As shown in Figures 4, 5, and 6, in one embodiment, the upper connector 102 includes a first optical fiber connector and a first optical fiber 1021. The first optical fiber connector includes a first housing 1022 and a first ferrule 1023. One end of the first ferrule 1023 is mounted within the first housing 1022, and the other end of the first ferrule 1023 is mounted within the first mounting hole 1013. The first ferrule 1023 serves as an alignment mechanism for the first optical fiber 1021, facilitating communication with the second optical fiber 1031. A through hole is defined in the center of the first ferrule 1023. The diameter of the through hole is larger than that of the first optical fiber 1021, and the first optical fiber 1021 is disposed within the through hole.

[0038] The lower connector 103 includes a second optical fiber connector and a second optical fiber 1031. The second optical fiber connector includes a second housing 1032 and a second pin 1033. One end of the second pin 1033 is mounted within the second housing 1032, and the other end of the second pin 1033 is mounted within the first mounting hole 1013. Similar to the upper connector 102, the second pin 1033 of the lower connector 103 also serves as an alignment mechanism for the second optical fiber 1031, facilitating communication with the first optical fiber 1021. A through hole is provided in the center of the second pin 1033. The diameter of the through hole is larger than that of the second optical fiber 1031. The second optical fiber 1031 is disposed within the through hole and is in communication with the acquisition component 240.

[0039] The first pin 1023 and the second pin 1033 abut within the first mounting hole 1013, thereby establishing a communication connection between the first optical fiber 1021 and the second optical fiber 1031. The provision of the first pin 1023 and the second pin 1033 facilitates alignment of the first optical fiber 1021 and the second optical fiber 1031 when the upper connector 102 and the lower connector 103 are in communication connection. Furthermore, the detachable connection between the upper connector 102 and the lower connector 103 facilitates replacement and maintenance, resolving the issue of non-replaceable signal connection devices in related art.

[0040] As shown in Figures 3, 7, and 8, in one embodiment, the first fixing member 1041 is provided with a first sunken portion 1043, which is arranged around the perimeter of the first sub-hole 1045. The first housing 1022 is mounted on the first sunken portion 1043, so that the first fixing member 1041 can limit the position of the first housing 1022, thereby ensuring the stability of the connection of the upper connecting member 102. The first optical fiber 1021 passes through the second sub-hole 1049 to transmit parameter information collected by the collection member 240 to external equipment.

[0041] As shown in Figures 2, 3, 7, and 8, in one embodiment, the cover assembly further includes a pressure plate 105. A fifth sunken portion 1046 is further provided on the first fixing member 1041. The fifth sunken portion 1046 is disposed around the perimeter of the first sunken portion 1043. The pressure plate 105 is disposed within the fifth sunken portion 1046 and abuts against the second fixing member 1042. A fourth mounting hole 1052 is defined on the pressure plate 105. The first optical fiber 1021 sequentially passes through the fourth mounting hole 1052 and the second sub-hole 1049 to connect to an external device. In some embodiments, a snap-in groove 1044 is further defined on the sidewall of the fifth sunken portion 1046, and a snap-in portion 1051 is provided on the pressure plate 105 to mate with the snap-in groove 1044. The clamping portion 1051 is clamped in the clamping groove 1044 , so as to limit the pressing plate 105 through the clamping portion 1051 and the clamping groove 1044 , thereby preventing the pressing plate 105 from rotating in the fifth sinking portion 1046 .

[0042] As shown in Figures 1, 2, 7, and 9, in one embodiment, the cover assembly further includes a protective sleeve 106 that is sleeved over the first optical fiber 1021, with the first optical fiber 1021 at least partially exposed from the protective sleeve 106. Thus, the protective sleeve 106 isolates the first optical fiber 1021 from the sidewalls of the second sub-hole 1049, preventing the sidewalls of the second sub-hole 1049 from scratching the first optical fiber 1021. In some embodiments, the protective sleeve 106 includes a tapered body 1061 and a first flange 1062 disposed around the tapered body 1061. The first flange 1062 matches the shape of the first depressed portion 1043 to engage within the first depressed portion 1043. The first flange 1062 abuts against the pressure plate 105, thereby limiting the position of the upper connector 102 through the second fixing member 1042, the pressure plate 105, and the first flange 1062. In some embodiments, a sixth sunken portion 1063 is provided on a side of the protective cover 106 facing the core package 202 , and a portion of the first shell 1022 is snapped into the sixth sunken portion 1063 to fix the upper connector 102 through the protective cover 106 .

[0043] As shown in Figures 1, 2, 7, and 8, in one embodiment, the cover assembly further includes a lower plastic member 112. The lower plastic member 112 is positioned between the cover 101 and the core package 202. The lower plastic member 112 is provided with a third mounting hole 1121 and a second depressed portion 1122 surrounding the third mounting hole 1121. A second housing 1032 is mounted within the second depressed portion 1122, with the end of the second housing 1032 facing away from the core package 202 abutting the cover 101. This allows the cover 101 to longitudinally constrain the second housing 1032, while the sidewalls of the lower plastic member 112 also constrain the second housing 1032 horizontally, thereby ensuring the stability of the connection to the lower connector 103. In some embodiments, the second housing 1032 has multiple bosses with decreasing diameters in the direction from the cover 101 toward the core package 202. The lower plastic member 112 is provided with multiple matching depressed portions to further secure the lower connector 103.

[0044] In some embodiments, the lower plastic 112 further defines a third sinking portion 1123 surrounding the second sinking portion 1122. A portion of the cover 101 is snapped into the third sinking portion 1123 to further stabilize the connection between the lower plastic 112 and the cover 101.

[0045] As shown in Figures 1, 2, and 7, in some embodiments, the cover assembly also includes a sleeve 107, which is located in the first mounting hole 1013 and is sleeved on the first pin 1023 and the second pin 1033 to fix the first pin 1023 and the second pin 1033 and prevent the first pin 1023 and the second pin 1033 from being scratched by the side wall of the first mounting hole 1013.

[0046] In some embodiments, a fourth sunken portion 1014 is provided on the transfer boss 1011 and is disposed around the perimeter of the first mounting hole 1013. The cover assembly further includes a seal 108, which is installed within the fourth sunken portion 1014 and sleeved over the first pin 1023. The seal 108 is used to seal the first mounting hole 1013 and protect the first pin 1023. In some embodiments, the seal is a rubber sealing ring.

[0047] The acquisition component 240 is located within the housing 201 and is used to acquire parameter information within the housing 201. This parameter information includes the temperature of the core package 202 and the pressure within the housing 201. Accordingly, the acquisition component 240 includes multiple sensors 241 and multiple connecting wires 242. The multiple sensors 241 include at least a temperature sensor and a pressure sensor. The multiple connecting wires 242 are used to connect the sensors 241 and to communicate with the second optical fiber 1031. The acquisition component 240 can be located between the housing 201 and the core package 202, or between the two core packages 202. This application does not limit the location of the acquisition component 240. The acquisition component 240 can be attached to the side wall of the housing 201 or the side wall of the core package 202. Depending on the type of signal transmitted by the upper connector 102 and the lower connector 103, the connecting wires 242 can be optical fibers, metal conductors, or other materials. If the connecting wires 242 are metal conductors, a signal conversion device can be provided between the connecting wires 242 and the second optical fiber 1031. The signal conversion device is connected to the connecting line 242 and the second optical fiber 1031 respectively to convert the electrical signal of the connecting line 242 into an optical signal and then send it to the second optical fiber 1031 .

[0048] In some embodiments, the cover plate 101 is further provided with a pole 109 , a liquid injection hole 110 , and an explosion-proof valve 111 .

[0049] The present application also provides a battery. The battery includes a core pack 202, a housing 201, and the cover assembly described in the above embodiment. The housing 201 has a receiving cavity, and the core pack 202 is installed in the receiving cavity.

[0050] The cover assembly includes a cover 101, a collection member 240, a lower connecting member 103, an upper connecting member 102, and a fixing member. The cover 101 is mounted on the housing 201. A transfer boss 1011 is provided on the cover 101. The transfer boss 1011 is provided with a first mounting hole 1013 that communicates with the receiving cavity. The collection member 240 is located in the receiving cavity and is used to obtain parameter information within the housing 201. The first end of the lower connecting member 103 is located in the first mounting hole 1013, and the second end of the lower connecting member 103 extends into the receiving cavity and is communicatively connected to the collection member 240. The first end of the upper connecting member 102 is located in the first mounting hole 1013 and is detachably communicatively connected to the first end of the lower connecting member 103. The fixing member is configured to mount the upper connecting member 102 on the transfer boss 1011 and is provided with a second mounting hole corresponding to the transfer boss 1011. The second end of the upper connecting member 102 passes through the second mounting hole to connect to an external device.

Claims

1. A cover plate assembly is installed on a housing, the housing has a receiving cavity, a core package is installed in the receiving cavity, and the cover plate assembly comprises: A cover plate, mounted on the shell, wherein the cover plate is provided with a first mounting hole communicating with the receiving cavity; A collection component, located in the receiving cavity and used to obtain parameter information in the shell; A lower connecting member, wherein a first end of the lower connecting member is located in the first mounting hole, and a second end of the lower connecting member extends into the receiving cavity and is communicatively connected with the collecting member; An upper connecting member, wherein a first end of the upper connecting member is located in the first mounting hole and is detachably communicatively connected with the first end of the lower connecting member, and a second end of the upper connecting member passes through the first mounting hole.

2. The cover plate assembly according to claim 1, wherein: The upper connecting member includes a first optical fiber connector and a first optical fiber connected to each other, and the lower connecting member includes a second optical fiber connector and a second optical fiber connected to each other, the first optical fiber connector abuts against the second optical fiber connector, and the second optical fiber is communicatively connected to the acquisition member.

3. The cover assembly according to claim 2 further includes a fixing member, which is configured to install the upper connecting member on the cover, and the fixing member has a second mounting hole corresponding to the first mounting hole, and the first optical fiber connector passes through the second mounting hole and abuts against the second optical fiber connector.

4. The cover plate assembly according to claim 3, wherein: The second mounting hole includes a first sub-hole and a second sub-hole, and the fixing member includes: A first fixing member is connected to a side of the cover plate away from the core package, the first fixing member is provided with the first sub-hole, and the first optical fiber connector is installed in the first installation hole after passing through the first sub-hole; The second fixing member is sleeved on the first fixing member and is used to limit the first optical fiber connector. The second fixing member is provided with the second sub-hole, and the first optical fiber passes through the second sub-hole.

5. The cover plate assembly according to claim 4, wherein: The first optical fiber connector includes a first shell and a first pin, the first pin is installed in the first shell and connected to the first optical fiber, the first fixing member is provided with a first sinking portion, the first sinking portion is arranged around the periphery of the first sub-hole, the first shell is installed in the first sinking portion, and the first pin is installed in the first mounting hole. 6 . The cover plate assembly according to claim 5 , further comprising a pressing plate abutting between the first housing and the second fixing member.

7. The cover plate assembly according to claim 6, wherein: The first fixing member is further provided with a fifth sinking portion, which is arranged around the periphery of the first sinking portion. The pressing plate is arranged in the fifth sinking portion and abuts against the second fixing member.

8. The cover plate assembly according to claim 7, wherein: A clamping groove is provided on the side wall of the fifth sinking portion, and a clamping portion matching the clamping groove is provided on the pressing plate, and the clamping portion is clamped in the clamping groove.

9. The cover plate assembly according to any one of claims 5 to 8, wherein: The second optical fiber connector includes a second shell and a second pin, the second pin is installed in the second shell and connected to the second optical fiber, the second shell is located on the side of the cover plate facing the core package, and the second pin is abutted against the first pin in the first mounting hole.

10. The cover plate assembly according to claim 9 further comprises a lower plastic located between the cover plate and the core package, the lower plastic is provided with a third mounting hole and a second sinking portion arranged around the perimeter of the third mounting hole, and the second shell is installed in the second sinking portion.

11. The cover plate assembly according to claim 10, wherein: The lower plastic is further provided with a third sinking portion arranged around the periphery of the second sinking portion, and part of the cover plate is clamped in the third sinking portion.

12. The cover plate assembly according to any one of claims 9 to 11, further comprising a sleeve, wherein the sleeve is located in the first mounting hole and is sleeved on the first pin and the second pin.

13. The cover plate assembly according to any one of claims 6 to 8, further comprising: The protective sleeve is sleeved on the first optical fiber and located between the first optical fiber and the side wall of the second sub-hole, and the first optical fiber is at least partially exposed from the protective sleeve.

14. The cover plate assembly according to claim 13, wherein: The protective sleeve includes a conical body and a first flange arranged around the conical body, the first flange is clamped in the first sinking portion, and the first flange abuts against the pressing plate.

15. The cover plate assembly according to claim 13 or 14, wherein: A sixth sinking portion is provided on a side of the protective sleeve facing the core package, and a portion of the first shell is clamped in the sixth sinking portion.

16. The cover plate assembly according to any one of claims 4 to 15, wherein: The cover plate is provided with a transfer boss, the transfer boss is provided with the first mounting hole, and the fixing member is configured to mount the upper connecting member on the transfer boss.

17. The cover plate assembly according to claim 16, wherein: The transfer boss is also provided with a fourth sinking portion, which is arranged around the periphery of the first mounting hole. The cover assembly also includes a sealing member, which is installed in the fourth sinking portion and sleeved on the upper connecting member.

18. The cover plate assembly according to claim 16 or 17, wherein: The first fixing member comprises a base portion and a second flange, the base portion is provided with an external thread, and the second flange is arranged around the base portion; The cover plate is also provided with a seventh sinking portion, and the seventh sinking portion is arranged around the transfer boss; The second flange is located in the seventh sinking portion and is welded to the cover plate.

19. The cover plate assembly according to any one of claims 4 to 16, wherein: The first fixing member and the second fixing member are threadedly connected.

20. A battery comprising: Core package; A shell having a receiving cavity, wherein the core package is installed in the receiving cavity; as well as A cover plate, mounted on the shell, wherein the cover plate is provided with a first mounting hole communicating with the receiving cavity; A collection component, located in the receiving cavity and used to obtain parameter information in the shell; A lower connecting member, wherein a first end of the lower connecting member is located in the first mounting hole, and a second end of the lower connecting member extends into the receiving cavity and is communicatively connected with the collecting member; An upper connecting member, wherein a first end of the upper connecting member is located in the first mounting hole and is detachably communicatively connected with the first end of the lower connecting member, and a second end of the upper connecting member passes through the first mounting hole.

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