Battery cover plate

Abstract

The invention discloses a battery cover plate which comprises a detection assembly used for detecting the temperature and the pressure intensity of a battery main body, a fixing structure used for fixing the detection assembly, an annular sealing ring connected with the first bottom surface of the detection assembly, a cover plate used for being connected with the battery main body, and a preset groove formed in the cover plate, a preset hole is formed in the preset groove, and the detection assembly is communicated with the battery main body through the preset hole; the annular sealing ring is further connected with the fixing structure. With the adoption of the application, the problem that the internal air pressure of the battery cannot be actually tested after the battery liquid injection port is packaged can be solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cover. Background Art

[0002] The liquid filling port assembly is an important safety component on the battery. The liquid filling port assembly is used to seal the liquid filling port of the battery to prevent the electrolyte of the battery from being exposed. However, after the liquid filling port assembly seals the liquid filling port of the battery, during the subsequent battery performance test, it is impossible to actually test the internal air pressure of the battery body in real time, and it is also impossible to quantitatively analyze the internal air pressure values ​​of the battery at different voltages in real time. Therefore, the battery's safety monitoring mechanism is poor and the battery safety is low. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides a battery cover, which can solve the problem that the internal air pressure of the battery body cannot be actually tested after the battery filling port is sealed. By monitoring the temperature and air pressure of the battery in real time, it is possible to observe the various indicators of the battery during the battery dissolution process, thereby improving the safety of the battery.

[0004] In a first aspect, the present application provides a battery cover, comprising: a detection assembly for detecting the temperature and pressure of a battery body, a fixing structure for fixing the detection assembly, an annular sealing ring connected to a first bottom surface of the detection assembly, a cover for connecting to the battery body, and a preset groove formed in the cover, the preset groove having a preset hole formed therein, and the detection assembly communicating with the battery body through the preset hole; The annular sealing ring is also connected to the fixed structure.

[0005] An annular sealing ring is used to prevent the battery body from leaking and to prevent external air from entering the battery body, thereby improving the airtightness of the battery body.

[0006] In an optional embodiment, the preset groove with a preset hole on the cover plate includes: a battery filling port.

[0007] In an optional embodiment, the shape of the detection component includes: a cylinder or a frustum.

[0008] In an optional embodiment, the fixing structure is a first annular base fixedly connected to the detection component; wherein the first annular base includes: a circular portion of the first annular base, a chassis of the first annular base, a first cavity formed by the enclosed space of the circular portion and the chassis, a target annular pit opened on the chassis, a target hole opened on the chassis, and one or more limiting bosses provided on the circular portion; the first annular base is formed by an integral molding process; a preset hole is opened on the preset groove, including: a second hole is opened on the second groove; the target hole includes: a hole located in the enclosed area of ​​the target annular pit and opened on the chassis; the target annular pit includes: an annular pit with a ring shape opened on the chassis; The detection component is connected to the battery body through the target hole and the second hole; The annular sealing ring is placed in the target annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring; The chassis is connected to the cover plate by welding; The detection component is placed in the first cavity, and the limiting boss abuts against the second bottom surface of the detection component to fix the detection component.

[0009] In an optional embodiment, the fixing structure is an annular component for fixing the detection component; the fifth bottom surface of the annular component abuts against the second bottom surface of the detection component to fix the detection component; The preset groove includes: a first groove; the first groove includes: a first hole, a first sidewall, and a first annular pit; wherein the first groove is formed by the cover plate based on a stamping process; wherein the first groove includes: a groove opened on the cover plate, the first hole includes: a hole opened on the first groove, the first sidewall includes: a sidewall formed by the first groove after the stamping process, and the first annular pit includes: an annular pit opened on the first groove; The preset groove is provided with a preset hole, including: a first hole is provided on the first groove; the detection component is connected to the battery body through the first hole; The second outer side surface of the annular component is welded to the first side wall of the first groove; the detection component includes: a first bottom surface; the annular sealing ring is placed in the first annular pit; the first bottom surface of the detection component is connected to the annular sealing ring; the annular component includes: a component in the shape of a three-dimensional circular ring; the second outer side surface of the annular component is: a curved surface on one side of the annular component facing away from the center position of the annular component.

[0010] In an optional embodiment, the preset groove includes: a fourth groove; The fixing structure includes: a hollow nut and a hollow screw; the hollow nut includes: a first internal thread; the hollow screw includes: a second side wall, a hole portion, a second annular base, a second cavity, an annular pit portion, and a first external thread; the second annular base is connected to the cover plate by welding; The annular sealing ring is placed in the annular recess, and the first bottom surface of the detection assembly is connected to the annular sealing ring; The preset groove is provided with a preset hole, including: a fourth hole is provided on the fourth groove; the detection component is connected to the battery body through the fourth hole and the hole portion; The detection component is placed in the cavity, and the hollow nut is screwed to the first internal thread of the hollow screw through the first external thread, so that the third bottom surface of the hollow nut abuts the second bottom surface of the detection component to fix the above-mentioned detection component.

[0011] Among them, the chassis and the cover plate are connected by welding to prevent the battery body from leaking, and it is also convenient for the fixing structure to be easily welded to the cover plate through the chassis at the lower part of the hollow screw; it should be noted that the chassis and the cover plate are connected by welding to prevent the battery body from leaking, and it is also convenient for the chassis at the lower part of the hollow screw to be easily welded to the cover plate.

[0012] In an optional embodiment, the preset groove includes: a fifth groove; the fifth groove includes: a fifth hole, a fifth sidewall, and a fifth annular pit; the preset hole is formed on the preset groove, including: a fifth hole is formed on the fifth groove; the detection component is connected to the battery body through the fifth hole; wherein the fifth groove includes: a groove formed on the cover plate, the fifth hole includes: a hole formed on the fifth groove, the fifth sidewall includes: a sidewall formed by stamping the fifth groove, and the fifth annular pit includes: an annular annular pit formed on the fifth sidewall; The fixing structure includes: a retaining spring; the retaining spring includes: an annular retaining spring with an annular shape or a polygonal retaining spring with a polygonal shape; When the retaining spring is an annular retaining spring, the annular sealing ring is placed in the fifth annular recess, and the first bottom surface of the detection component is connected to the annular sealing ring; the side surface of the annular retaining spring is elastically connected to the fifth side wall, and the sixth bottom surface of the annular retaining spring abuts against the second bottom surface of the detection component to fix the detection component placed in the fifth groove.

[0013] In an optional embodiment, the preset groove includes: a sixth groove, the sixth groove includes: a sixth hole, a sixth sidewall, and a sixth annular pit; the preset hole is formed on the preset groove, including: a sixth hole is formed on the sixth groove; the detection assembly is connected to the battery body through the sixth hole; wherein the sixth groove includes: a groove formed on the cover plate, the sixth hole includes: a hole formed on the sixth groove, the sixth sidewall includes: a sidewall formed by stamping the sixth groove, and the sixth annular pit includes: an annular pit formed on the sixth groove; The fixing structure includes: a concave ring portion, wherein the concave ring portion is formed by stamping the sixth side wall; The annular sealing ring is placed in the sixth annular pit, and the first bottom surface of the detection component is connected to the upper surface of the annular sealing ring; The first edge surface of the concave ring portion abuts against the second bottom surface of the detection component to fix the detection component placed in the sixth groove.

[0014] In an optional embodiment, the preset groove includes: a seventh groove, the seventh groove includes: a seventh hole, a seventh sidewall, and a seventh annular pit; the preset hole is opened on the preset groove, including: a seventh hole is opened on the seventh groove; wherein the seventh groove includes: a groove opened on the cover plate, the seventh hole includes: a hole opened on the seventh groove, the seventh sidewall includes: a sidewall formed by stamping the seventh groove, and the seventh annular pit includes: a ring-shaped pit formed on the seventh sidewall; The detection component is connected to the battery body through the seventh hole; The fixing structure includes: a plurality of movable parts; the movable parts are formed by stamping the seventh side wall; The annular sealing ring is placed in the seventh annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring; The second edge surface of the movable portion abuts against the second bottom surface of the detection component to fix the detection component placed in the seventh groove.

[0015] In an optional embodiment, the preset groove includes: an eighth groove, the eighth groove includes: an eighth hole, an eighth sidewall, and an eighth annular pit; wherein the eighth sidewall is machined with a second internal thread; the preset hole is opened on the preset groove, including: an eighth hole is opened on the eighth groove; wherein the eighth groove includes: a groove opened on the cover plate, the eighth hole includes: a hole opened on the eighth groove, and the eighth sidewall includes: a sidewall of the eighth groove formed by stamping; The detection component is connected to the battery body through the eighth hole; The fixing structure includes: a hollow screw portion, the outer side surface of the hollow screw portion is processed with a second external thread; The annular sealing ring is placed in the eighth annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring; The hollow screw portion is threadedly connected to the second internal thread on the eighth side wall through the second external thread, so that the fourth bottom surface of the hollow screw portion abuts against the second bottom surface of the detection component to fix the detection component placed in the eighth groove.

[0016] In an optional embodiment, the preset groove includes: a ninth groove, the ninth groove includes: a ninth hole and a ninth sidewall; the preset hole is opened on the preset groove, including: a ninth hole is opened on the ninth groove; the detection component is connected to the battery body through the ninth hole; wherein the ninth groove includes: a groove opened on the cover plate, the ninth hole includes: a hole opened on the ninth groove, and the ninth sidewall includes: a sidewall formed by stamping the ninth groove; The fixing structure includes: a hollow aluminum tube, formed by stamping the front and rear ends of an aluminum tube with a hollow center and a circular cross-section; the hollow aluminum tube includes: a ninth annular recess and a tenth annular recess; a ninth outer side surface of the hollow aluminum tube is welded to a ninth side wall; the ninth outer side surface includes: a curved surface on one side of the side wall of the hollow aluminum tube facing away from the center of the aluminum tube; The annular sealing ring is placed in the ninth annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring; A preset sealing ring is further placed in the tenth annular pit, and the second bottom surface of the detection component is connected to the preset sealing ring, wherein the preset sealing ring is an annular sealing ring; The annular sealing ring placed in the ninth annular pit and the preset sealing ring placed in the tenth annular pit respectively abut against the detection component to fix the detection component.

[0017] With this embodiment, the airtightness of the battery body is further improved by using a preset sealing ring, and it is also convenient to fix the hollow aluminum tube on the side wall.

[0018] In an optional embodiment, the preset groove includes: a tenth groove, the tenth groove includes: a tenth hole, and a tenth sidewall; the preset hole is opened on the preset groove, including: a tenth hole is opened on the tenth groove; the detection component is connected to the battery body through the tenth hole; wherein the tenth groove includes: a groove opened on the cover plate, the tenth hole includes: a hole opened on the tenth groove; the tenth sidewall includes: a sidewall of the tenth groove formed by a stamping process; The fixing structure includes: a first hollow structure, the first hollow structure includes: a protrusion and a bent portion, wherein an eleventh annular recess is formed on the bent portion; the tenth side wall abuts against the bent portion, and the eleventh annular recess includes: an annular recess formed on the bent portion; The annular sealing ring is placed in the eleventh annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring, the first end of the protrusion abuts against the second bottom surface of the detection component to fix the detection component placed in the tenth groove, and the second end of the protrusion is welded to the tenth side wall.

[0019] In an optional embodiment, the preset groove includes: a twelfth groove, the twelfth groove includes: a twelfth hole, a twelfth sidewall, and a twelfth annular pit, wherein the twelfth sidewall is machined with a third internal thread; the preset hole is opened on the preset groove, including: a twelfth hole is opened on the twelfth groove; the detection component is connected to the battery body through the twelfth hole; wherein the twelfth groove includes: a groove opened on the cover plate, the twelfth hole includes: a hole opened on the twelfth groove; the twelfth sidewall includes: a sidewall formed by stamping the twelfth groove; the twelfth annular pit includes: a pit with an annular shape formed on the twelfth groove; The fixing structure includes: a second hollow structure, the second hollow structure includes: an annular portion and a cavity portion, wherein the outer side surface of the cavity portion is processed with a third external thread; The annular sealing ring is placed in the twelfth annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring; The second hollow structure is screwed to the third internal thread on the twelfth side wall via the third external thread, so that the annular portion of the second hollow structure abuts against the second bottom surface of the detection component to fix the detection component placed in the twelfth groove.

[0020] In an optional embodiment, the preset groove includes: a thirteenth groove, the thirteenth groove includes: a thirteenth hole, a thirteenth sidewall, and a thirteenth annular pit; the preset hole is opened on the preset groove, including: a thirteenth hole is opened on the thirteenth groove; the detection component is connected to the battery body through the thirteenth hole; wherein the thirteenth groove includes: a groove opened on the cover plate, the thirteenth hole includes: a hole opened on the thirteenth groove; the thirteenth sidewall includes: a sidewall formed by stamping the thirteenth groove; the thirteenth annular pit includes: a ring-shaped pit formed on the thirteenth groove; The shape of the detection component is cylindrical; The fixing structure includes: a third hollow structure, and the third hollow structure includes: an inner ring portion and a welding portion; The annular sealing ring is placed in the thirteenth annular pit, and the first bottom surface of the detection component is connected to the annular sealing ring, the first ring portion abuts against the second bottom surface of the detection component to fix the detection component placed in the thirteenth groove, and the welding portion is welded to the cover plate.

[0021] In an optional embodiment, the hollow nut also includes a fourteenth annular pit, a preset sealing ring is also placed in the fourteenth annular pit, and the second bottom surface of the detection component is connected to the preset sealing ring, wherein the preset sealing ring is an annular sealing ring.

[0022] In an optional embodiment, the inner side surface of the fixing structure is provided with one or more first limiting protrusions, and the first outer side surface of the detection component is provided with one or more first limiting grooves, the first limiting protrusions are connected to the first limiting grooves by mortise and tenon, and the first limiting protrusions correspond to the first limiting grooves one by one; or, The inner side surface of the fixing structure is provided with one or more second limiting grooves, and the first outer side surface of the detection component is provided with one or more second limiting protrusions, the second limiting protrusions are connected to the second limiting grooves by mortise and tenon, and the second limiting protrusions correspond to the second limiting grooves one by one.

[0023] In an optional embodiment, the first outer side surface of the detection component is connected to the inner side surface of the fixing structure by gluing.

[0024] The present application discloses a battery cover, comprising: a detection component for detecting the temperature and pressure of a battery body, a fixing structure for fixing the detection component, an annular sealing ring connected to the bottom surface of the detection component, a cover for connecting to the battery body, and a preset groove opened on the cover, the preset groove having a preset hole, the detection component being connected to the battery body through the preset hole; the annular sealing ring is also connected to the fixing structure.

[0025] This application solves the problem of being unable to actually test the internal pressure of a battery after the battery filling port is sealed. That is, by monitoring the battery's temperature and pressure in real time, it is possible to observe the various indicators of the battery during the battery's capacity conversion process, thereby improving battery safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is a structural diagram of a battery cover provided by this application; Figure 2 This is a schematic diagram of an exploded structure of a battery cover provided by the present application; Figure 3 This is a structural diagram of a first annular base 21 provided by the present application on which a detection component 11 is placed; Figure 4 This is a schematic structural diagram of a first annular base 21 provided in this application; Figure 5 This is a schematic structural diagram of another battery cover provided by this application; Figure 6 This is a schematic diagram of an exploded structure of another battery cover provided in this application; Figure 7 This is a schematic diagram of the cross-sectional structure of another battery cover provided in this application; Figure 8 This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 9 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 10 This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 11 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 12 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 13 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 14 This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 15 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 16 This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 17 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 18This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 19 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 20 This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 21 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Figure 22 This is a schematic diagram of an exploded structure of another battery cover provided by the present application; Figure 23 This is a schematic diagram of the cross-sectional structure of another battery cover provided by the present application; Among them, 10-cover, 11-detection component, 111-first bottom surface, 113-second bottom surface, 112-first outer side surface, 12-annular sealing ring, 13-first groove, 131-first hole, 133-first annular pit, 134-first side wall, 14-battery body, 15-annular component, 152-fifth bottom surface, 151-second outer side surface, 16-negative electrode, 17-positive electrode, 21-first annular base, 211-circular portion, 212-chassis, 213-first cavity, 214-target annular pit, 215-target hole, 216-limiting boss, 2111-first inner side surface, 23-second groove, 43-fourth groove, 33-hollow nut, 31-hollow screw, 332 -first internal thread, 333-third bottom surface, 310-second side wall, 311-hole portion, 312-second annular base, 313-second cavity, 314-annular recess portion, 315-first external thread, 316-second inner side surface, 331-fourteenth annular recess, 53-fifth groove, 531-fifth hole, 532-fifth side wall, 533-fifth annular recess, 5321-third inner side surface, 41-annular retaining ring, 63-sixth groove, 631-sixth hole, 632-sixth side wall, 633-sixth annular recess, 61-recessed ring portion, 611-first edge surface, 6321-fourth inner side surface, 73-seventh groove, 731-seventh hole, 732-seventh side wall, 733-first Seven annular pits, 71-movable portion, 711-second edge surface, 7321-fifth inner surface, 83-eighth groove, 831-eighth hole, 832-eighth side wall, 833-eighth annular pit, 834-second internal thread, 81-hollow screw portion, 811-second external thread, 812-fourth bottom surface, 93-ninth groove, 931-ninth hole, 932-ninth side wall, 91-hollow aluminum tube, 92-preset sealing ring, 911-ninth annular pit, 912-tenth annular pit, 913-ninth outer surface, 914-ninth inner surface, 102-tenth groove, 1021-tenth hole, 1022-tenth side wall, 101-first hollow structure, 1011-protrusion, 1012 -bending portion, 10111-first end portion, 10112-second end portion, 10121-eleventh annular recess, 1013-tenth inner side surface, 122-twelfth groove, 121-second hollow structure, 1211-cavity portion, 1212-annular portion, 1221-twelfth hole, 1222-twelfth side wall, 1223-twelfth annular recess, 12111-third external thread, 12221-third internal thread, 132-thirteenth groove, 1321-thirteenth hole, 1322-thirteenth side wall, 1323-thirteenth annular recess, 1314-third hollow structure, 1311-first ring portion, 1312-welding portion, 1313-second ring portion, 13131-sixth inner side surface. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth and thirteenth in this application are only used to distinguish different structural parts in this application and have no other special meanings and should not limit the scope of protection of this application.

[0030] In conjunction with the drawings in this application, this application provides a battery cover, including: The battery includes a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a fixing structure for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover plate 10 for connecting to the battery body 14, and a preset groove formed in the cover plate 10. The preset groove has a preset hole formed in the preset groove, and the detection assembly 11 communicates with the battery body 14 through the preset hole. The annular sealing ring 12 is also connected to the fixing structure. The annular sealing ring 12 is used to prevent the battery body 14 from leaking and prevent external air from entering the battery body 14, thereby improving the airtightness of the battery body 14. It should be noted that the battery cover may also include a positive electrode 17 and a negative electrode 16.

[0031] By adopting the above-mentioned battery cover, the temperature and pressure of the battery body 14 can be detected.

[0032] Preferably, the inner side surface of the fixing structure is provided with one or more first limiting protrusions, and the first outer side surface 112 of the detection component 11 is provided with one or more first limiting grooves, the first limiting protrusions and the first limiting grooves are connected by mortise and tenon, and the first limiting protrusions and the first limiting grooves correspond one to one; or, The inner side surface of the fixing structure is provided with one or more second limiting grooves, and the first outer side surface 112 of the detection component 11 is provided with one or more second limiting protrusions, the second limiting protrusions being connected to the second limiting grooves by mortise and tenon joints, and the second limiting protrusions and the second limiting grooves are in a one-to-one correspondence. Optionally, the first outer side surface 112 of the detection component 11 can be: a curved surface of the detection component 11 facing the outside.

[0033] Preferably, the preset groove with the preset hole opened on the cover plate 10 includes: a liquid filling port of the battery.

[0034] Preferably, the shape of the detection component 11 may include but is not limited to: a cylinder or a frustum.

[0035] Preferably, the first outer side surface 112 of the detection component 11 is connected to the inner side surface of the fixing structure by gluing.

[0036] It should be noted that the inner side surface of the fixed structure may be: a side surface of the fixed structure facing the side wall of the detection component 11 placed in the fixed structure. Example

[0037] Figure 1 This is a schematic structural diagram of a battery cover provided by this application. Figure 2 This is a schematic diagram of the explosion structure of a battery cover. Figure 3 1 is a schematic structural diagram of a first annular base 21 on which a detection component 11 is placed. Figure 4 1 is a schematic structural diagram of a first annular base 21 provided.

[0038] Combine Figure 1-4 , the structure of a battery cover provided in this embodiment is described in detail. Specifically, The fixed structure is a first annular base 21 fixedly connected to the detection component 11; wherein, the first annular base 21 may include but is not limited to: a circular portion 211 of the first annular base 21, a chassis 212 of the first annular base 21, a first cavity 213 formed by the enclosed space of the circular portion 211 and the chassis 212, a target annular pit 214 opened on the chassis 212, a target hole 215 opened on the chassis 212, and one or more limiting bosses 216 arranged on the circular portion 211; wherein, the target hole 215 may be: a hole located in the enclosed area of ​​the target annular pit 214 and opened on the chassis 212, and the target annular pit 214 may be: an annular pit with an annular shape opened on the chassis 212; the first annular base 21 may be formed by an integrated molding process.

[0039] The preset groove is provided with a preset hole, which may include: the second groove 23 is provided with a second hole.

[0040] The battery cover in the first embodiment may include but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a first annular base 21 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover 10, and a second groove 23 with a second hole; wherein, The detection component 11 is connected to the battery body 14 through the target hole 215 and the second hole; The annular sealing ring 12 is placed in the target annular pit 214 , and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12 , wherein the annular sealing ring 12 may be a sealing ring in an annular shape; The chassis 212 is welded to the cover plate 10; The detection assembly 11 is placed in the first cavity 213 , and the limiting boss 216 abuts against the second bottom surface 113 of the detection assembly 11 to fix the detection assembly 11 .

[0041] Preferably, the first outer side surface 112 of the detection assembly 11 is connected to the first inner side surface 2111 of the annular portion 211 by gluing, thereby further preventing air leakage from the battery body 14 and maintaining the airtightness of the battery body 14. The first inner side surface 2111 of the annular portion 211 may be a curved surface facing the detection assembly 11 placed in the first cavity 213.

[0042] Preferably, one or more first limiting protrusions are provided on the first inner side surface 2111 of the annular portion 211 of the first annular base 21, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusions are connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, wherein the first limiting protrusions and the first limiting grooves correspond one to one. Optionally, the first limiting grooves can also be used as a channel for injection molding glue. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be interchanged, that is, one or more second limiting grooves can be provided on the first inner side surface 2111 of the annular portion 211, and one or more second limiting protrusions can be provided on the first outer side surface 112 of the detection component 11. The first inner side surface 2111 of the annular portion 211 is connected to the second limiting protrusions provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, and the second limiting protrusions and the second limiting grooves correspond one to one.

[0043] The detection component 11 is also provided with a communication module for sending the detected temperature and pressure of the battery body 14 to the battery management device for determining whether the temperature and pressure are abnormal.

[0044] The battery management device is used to determine in real time whether the temperature and air pressure data are abnormal. If the data is abnormal, the battery management device is also used to issue an early warning and control the disconnection of the connection circuit of the battery body 14.

[0045] Specifically, the battery management device is specifically configured to: in response to receiving the temperature and air pressure data from the detection component 11, determine in real time whether the temperature is within a first safety threshold range, and determine whether the air pressure is within a second safety threshold range; If the temperature is not within the first safety threshold, it is determined that the temperature is abnormal, and a first alarm message is output and the connection circuit of the battery body 14 is cut off in a bypass manner; or, If the air pressure is not within the second safety threshold, the air pressure is determined to be abnormal, a second alarm message is output, and the connection circuit of the battery body 14 is cut off in a bypass manner; The battery management device is further configured to flash and / or highlight abnormal temperature and pressure of the battery body 14 in real time, and emit an alarm sound to indicate abnormality of the battery body 14 .

[0046] Regarding the first embodiment, the steps of fixing the detection component 11 may include but are not limited to: The annular sealing ring 12 is placed in the target annular pit 214, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; the detection component 11 is placed in the first cavity 213; the limiting boss 216 is abutted against the second bottom surface 113 of the detection component 11 to fix the above-mentioned detection component 11; and then the edge portion of the chassis 212 is welded to the cover plate 10. Example

[0047] Figure 5 This is a structural diagram of another battery cover provided by this application. Figure 6 This is a schematic diagram of the explosion structure of another battery cover. Figure 7 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0048] Combine Figure 5-7 , the structure of another battery cover provided in this embodiment 2 is described in detail. Specifically, The fixing structure is an annular component 15 that fixes the detection component 11; the fifth bottom surface 152 of the annular component 15 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11; the annular component 15 can be a circular ring with a hollow center, wherein the fifth bottom surface 152 can be a bottom surface of the annular component 15.

[0049] The preset groove includes: a first groove 13; the first groove 13 may include but is not limited to: a first annular pit 133, a first side wall 134, and a first hole 131; wherein the second outer side surface 151 of the annular component 15 is welded to the first side wall 134 of the first groove 13; wherein the first groove 13 may be a groove opened on the cover plate 10, the first hole 131 may be: a hole opened on the first groove 13, the first side wall 134 may be: a side wall formed by the first groove 13 after the stamping process, the first annular pit 133 may be: an annular pit opened on the first groove 13 pit; that is, the battery cover in the second embodiment may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a ring-shaped component 15 for fixing the detection component 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection component 11, a cover 10, and a first groove 13 for placing the annular component 15; wherein, the first groove 13 can be formed by the cover 10 based on a stamping process; wherein, the annular component 15 includes: a component in the shape of a three-dimensional circular ring; the second outer side surface 151 can be: a side curved surface at the center position of the circular ring facing away from the annular component 15.

[0050] The annular sealing ring 12 is placed in the first annular pit 133 , and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12 ; the function of the annular sealing ring 12 will not be described in detail here.

[0051] The preset groove is provided with preset holes, including: a first hole 131 is provided on the first groove 13 , wherein the detection component 11 is connected to the battery body 14 through the first hole 131 .

[0052] Preferably, the first outer side surface 112 of the detection component 11 is connected or bonded to the inner side surface of the annular component 15 by gluing. The inner side surface of the annular component 15 may be a curved surface facing the center of the annular component 15 .

[0053] Preferably, one or more first limiting protrusions are provided on the inner side surface of the first side wall 134, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusion is connected to the first limiting groove provided on the first outer side surface 112 of the detection component 11 by mortise and tenon, wherein the first limiting protrusion and the limiting groove correspond one to one. Optionally, the position of the limiting protrusion and the setting position of the limiting groove can be interchanged, that is, one or more second limiting grooves are provided on the inner side surface of the first side wall 134, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting groove is connected to the second limiting protrusion by mortise and tenon. The inner side surface of the first side wall 134 can be: a side surface of the first side wall 134 facing the detection component 11 placed in the first groove 13.

[0054] Regarding the second embodiment, the steps of fixing the detection component 11 may include but are not limited to: Place the annular sealing ring 12 in the first annular pit 133, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; place the detection component 11 in the first groove 13; then install the annular component 15 so that the fifth bottom surface 152 of the annular component 15 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11; weld the second outer side surface 151 of the annular component 15 to the first side wall 134 of the first groove 13 to further maintain the airtightness of the battery body 14 and also to fix the annular component 15. Example

[0055] Figure 8 This is another exploded structural diagram of a battery cover provided in this application. Figure 9 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0056] Combine Figure 8-9 , the structure of another battery cover provided in this embodiment 3 is described in detail. Specifically, The preset groove may include: a fourth groove 43; The fixing structure may include but is not limited to: a hollow nut 33 and a hollow screw 31; wherein the hollow nut 33 includes: a first internal thread 332; the hollow screw 31 may include but is not limited to: a second sidewall 310, a hole portion 311, a second annular base 312, a second cavity 313, an annular recess portion 314, and a first external thread 315; Among them, the second cavity 313 can be formed by the space enclosed by the second annular base 312, and the annular pit portion 314 is formed on the second annular base 312; the hole portion 311 is located at the center of the hollow screw 31; the second side wall 310 is the side wall of the hollow screw 31, and the first external thread 315 is: a thread on the outer side surface of the second side wall 310 facing away from the second cavity 313; wherein the outer side surface of the second side wall 310 can be: a side surface of the second side wall 310 facing away from the second cavity 313, and the second annular base 312 is connected to the cover plate 10 by welding; to prevent the battery body 14 from leaking, it is also convenient for the fixing structure to be easily welded to the cover plate 10 through the second annular base 312 at the lower part of the hollow screw 31.

[0057] In addition, the hollow nut 33 may include but is not limited to: a nut with a hollow center; the hollow nut 33 may include but is not limited to: a cavity in which the hollow screw rod 31 can be placed, the cavity of the hollow nut 33 may be formed by a curved side wall and a third bottom surface 333, and the first internal thread 332 may be: a thread on the curved side wall of the cavity facing the hollow nut 33.

[0058] The battery cover in the third embodiment may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a hollow nut 33 and a hollow screw 31 for fixing the detection component 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection component 11, a cover 10, and a fourth groove 43; wherein, the second annular base 312 is connected to the cover 10 by welding to prevent the battery body 14 from leaking, and also to facilitate the fixing structure to be easily welded to the cover 10 through the second annular base 312 at the lower part of the hollow screw 31; it should be noted that the second annular base 312 is connected to the cover 10 by welding to prevent the battery body 14 from leaking, and also to facilitate the second annular base 312 at the lower part of the hollow screw 31 to be easily welded to the cover 10.

[0059] The annular sealing ring 12 is placed in the annular recess 314 , and the first bottom surface 111 of the detection assembly 11 is connected to the annular sealing ring 12 , wherein the annular recess 314 is an annular recess formed on the hollow screw 31 .

[0060] The second annular base 312 is welded to the cover plate 10 , so that the second annular base 312 can be welded to the cover plate 10 .

[0061] The detection component 11 is placed in the second cavity 313. After the hollow nut 33 is screwed to the first internal thread 332 of the hollow screw 31 through the first external thread 315, the third bottom surface 333 of the hollow nut 33 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11.

[0062] The annular sealing ring 12 is placed in the annular recess 314 , and the first bottom surface 111 of the detection assembly 11 is connected to the annular sealing ring 12 ; the predetermined groove is provided with a predetermined hole, which may include: a fourth hole is provided in the fourth groove 43 ; the detection assembly 11 is connected to the battery body 14 through the fourth hole and the hole portion 311 ; Preferably, the first outer side surface 112 of the detection component 11 is connected or bonded to the second inner side surface 316 of the second side wall 310 of the hollow screw 31 by gluing, and the second inner side surface 316 of the second side wall 310 faces the second cavity 313. The second inner side surface 316 of the second side wall 310 is: a side surface of the second side wall 310 facing the second cavity 313 (or the center position of the second cavity 313).

[0063] Preferably, one or more first limiting protrusions are provided on the second inner side surface 316 of the hollow screw 31, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusions are connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, wherein the first limiting protrusions correspond to the first limiting grooves one by one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be interchanged, that is, one or more second limiting grooves are provided on the second inner side surface 316 of the hollow screw 31, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting grooves are connected to the second limiting protrusions by mortise and tenon joints.

[0064] Preferably, the hollow nut 33 may also include a fourteenth annular pit 331, wherein a preset sealing ring 92 is also placed in the fourteenth annular pit 331, and the second bottom surface 113 of the detection component 11 is connected to the preset sealing ring 92, which can further maintain the airtightness of the battery body 14, wherein the preset sealing ring 92 is an annular sealing ring, wherein the fourteenth annular pit 331 is: a pit with an annular shape formed on the hollow nut 33.

[0065] Regarding the third embodiment, the steps of fixing the detection component 11 may include but are not limited to: The annular sealing ring 12 is placed in the annular recess 314, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; the detection component 11 is placed in the second cavity 313 of the hollow screw 31; the hollow nut 33 is screwed to the first internal thread 332 of the hollow screw 31 through the first external thread 315, so that the third bottom surface 333 of the hollow nut 33 is in contact with the second bottom surface 113 of the detection component 11 to fix the above-mentioned detection component 11; the second annular base 312 is welded to the cover plate 10 to further maintain the airtightness of the battery body 14, and is also used to fix the hollow screw 31. Example

[0066] Figure 10 This is another exploded structural diagram of a battery cover provided in this application. Figure 11 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0067] Combine Figure 10-11 , the structure of another battery cover provided in this fourth embodiment is described in detail. Specifically, The preset groove includes: a fifth groove 53; the fifth groove 53 may include but is not limited to: a fifth hole 531, a fifth side wall 532, and a fifth annular pit 533; a preset hole is opened on the preset groove, which may include: a fifth hole 531 is opened on the fifth groove 53; the detection component 11 is connected to the battery body 14 through the fifth hole 531; wherein, the fifth groove 53 is a groove opened on the cover plate 10, the fifth hole 531 may be a hole opened on the fifth groove 53, the fifth side wall 532 may be a side wall formed by stamping the fifth groove 53, and the fifth annular pit 533 may be: an annular pit with an annular shape formed on the fifth side wall 532; the fixing structure may include: a retaining spring; the retaining spring may include but is not limited to: an annular retaining spring 41 with an annular shape or a polygonal retaining spring with a polygonal shape; wherein, the polygonal retaining spring with a polygonal shape may include but is not limited to any of the following: a polygonal retaining spring with a regular hexagonal shape or a polygonal retaining spring with a pentagonal shape.

[0068] When the aforementioned retaining spring is an annular retaining spring 41, the battery cover in this fourth embodiment may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, an annular retaining spring 41 for fixing the detection component 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection component 11, a cover 10, and a fifth groove 53.

[0069] In which, the annular sealing ring 12 is placed in the fifth annular pit 533, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; the side of the annular retaining spring 41 is elastically connected to the fifth side wall 532, and the sixth bottom surface of the annular retaining spring 41 is abutted against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the fifth groove 53, wherein the sixth bottom surface is: a bottom surface of the annular retaining spring 41 facing the detection component 11 placed in the fifth groove 53.

[0070] Preferably, the first outer side surface 112 of the detection component 11 and the fifth side wall 532 of the fifth groove 53 are connected or bonded by gluing.

[0071] Preferably, one or more first limiting protrusions are provided on the third inner side surface 5321 of the fifth side wall 532, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11, and the first limiting protrusion is connected to the first limiting groove provided on the first outer side surface 112 of the detection component 11 by mortise and tenon, wherein the first limiting protrusion corresponds to the first limiting groove one-to-one. Optionally, the position of the limiting protrusion and the setting position of the limiting groove can be interchanged, that is, one or more second limiting grooves are provided on the third inner side surface 5321 of the fifth side wall 532, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting groove is connected to the second limiting protrusion by mortise and tenon. The third inner side surface 5321 can be: a side of the fifth side wall 532 facing the detection component 11 placed in the fifth groove 53.

[0072] Regarding the fourth embodiment, the steps of fixing the detection component 11 may include but are not limited to: Place the annular sealing ring 12 in the fifth annular pit 533 of the stamped fifth groove 53; place the detection component 11 in the fifth groove 53; and then place the annular retaining spring 41 so that the side surface of the annular retaining spring 41 is elastically connected to the fifth side wall 532, and the sixth bottom surface of the annular retaining spring 41 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the fifth groove 53. Example

[0073] Figure 12 This is a schematic diagram of the cross-sectional structure of another battery cover provided in this application.

[0074] Combine Figure 12 , the structure of another battery cover provided in this embodiment 5 is described in detail. Specifically, The preset groove includes: a sixth groove 63, and the sixth groove 63 may include but is not limited to: a sixth hole 631, a sixth side wall 632, and a sixth annular pit 633; ​​the detection component 11 is connected to the battery body 14 through the sixth hole 631; a preset hole is opened on the preset groove, which may include: a sixth hole 631 is opened on the sixth groove 63; wherein the sixth groove 63 may be a groove opened on the cover plate 10, the sixth hole 631 may be a hole opened on the sixth groove 63, the sixth side wall 632 may be: a side wall of the sixth groove 63 formed by stamping, and the sixth annular pit 633 may be: a pit with an annular shape formed on the sixth groove 63.

[0075] The fixing structure includes: a concave ring portion 61, which is formed by stamping the sixth side wall 632; The battery cover in the fifth embodiment may include but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a concave ring portion 61 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover 10, and a sixth groove 63 for placing the detection assembly 11; wherein, The annular sealing ring 12 is placed in the sixth annular recess 633 , and the first bottom surface 111 of the detection assembly 11 is connected to the upper surface of the annular sealing ring 12 ; The first edge surface 611 of the concave ring portion 61 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the sixth groove 63 . The first edge surface 611 can be: a curved surface on one side of the concave ring portion 61 facing the second bottom surface 113 .

[0076] Preferably, the first outer side surface 112 of the detection component 11 is connected to the fourth inner side surface 6321 of the sixth side wall 632 of the sixth groove 63 by gluing or bonding. The fourth inner side surface 6321 may be: a side facing the sixth side wall 632 of the detection component 11 placed in the sixth groove 63; Preferably, one or more first limiting protrusions are provided on the fourth inner side surface 6321 of the sixth side wall 632, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusions are connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, wherein the first limiting protrusions correspond to the first limiting grooves one-to-one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be interchanged, that is, one or more second limiting grooves are provided on the fourth inner side surface 6321 of the sixth side wall 632, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting grooves are connected to the second limiting protrusions by mortise and tenon joints.

[0077] Regarding the fifth embodiment, the steps of fixing the detection component 11 may include but are not limited to: Place the annular sealing ring 12 in the sixth annular pit 633 of the stamped sixth groove 63; place the detection component 11 in the sixth groove 63; form the concave ring portion 61 by stamping the sixth side wall 632; abut the first edge surface 611 of the concave ring portion 61 against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the sixth groove 63. Example

[0078] Figure 13 This is a schematic diagram of the cross-sectional structure of another battery cover provided in this application.

[0079] Combine Figure 13, the structure of another battery cover provided in this embodiment 6 is described in detail. Specifically, The preset groove includes: a seventh groove 73, which may include but is not limited to: a seventh hole 731, a seventh side wall 732, and a seventh annular pit 733; the detection component 11 is connected to the battery body 14 through the seventh hole 731; a preset hole is opened on the preset groove, which may include: a seventh hole 731 is opened on the seventh groove 73; wherein the seventh groove 73 may be: a groove opened on the cover plate 10, the seventh hole 731 may be a hole opened on the seventh groove 73, the seventh side wall 732 may be a side wall formed by stamping the seventh groove 73, and the seventh annular pit 733 may be: a pit with an annular shape formed on the seventh side wall 732.

[0080] The fixing structure includes: multiple movable parts 71; the movable parts 71 are formed by stamping the seventh side wall 732; the movable parts 71 can be movably bent so that the second edge surface 711 of the movable part 71 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the seventh groove 73; the second edge surface 711 can be: a curved surface on one side of the movable part 71 facing the second bottom surface 113.

[0081] The battery cover in the sixth embodiment may include, but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a plurality of movable parts 71 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover 10, and a seventh groove 73 for placing the detection assembly 11; wherein, The annular sealing ring 12 is placed in the seventh annular recess 733 , and the first bottom surface 111 of the detection assembly 11 is connected to the annular sealing ring 12 ; The second edge surface 711 of the movable portion 71 abuts against the second bottom surface 113 of the detection assembly 11 to fix the detection assembly 11 placed in the seventh groove 73 .

[0082] Preferably, the first outer side surface 112 of the detection component 11 is connected or bonded to the fifth inner side surface 7321 of the seventh sidewall 732 of the seventh groove 73 by gluing or bonding. The fifth inner side surface 7321 is a side surface facing the seventh sidewall 732 of the detection component 11 placed in the seventh groove 73.

[0083] Preferably, one or more first limiting protrusions are provided on the fifth inner side surface 7321 of the seventh side wall 732, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusions are connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, wherein the first limiting protrusions correspond to the first limiting grooves one by one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be interchanged, that is, one or more second limiting grooves are provided on the fifth inner side surface 7321 of the seventh side wall 732, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11.

[0084] Regarding the sixth embodiment, the installation steps of the detection component 11 may include but are not limited to: Place the annular sealing ring 12 in the seventh annular recess 733 formed by machining. The detection component 11 is placed in the seventh groove 73 punched through the cover plate 10; the cover plate 10 is punched to form a plurality of movable parts 71, and then the movable parts 71 are bent so that the second edge surface 711 of the movable part 71 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the seventh groove 73. Example

[0085] Figure 14 This is another exploded structural diagram of a battery cover provided in this application. Figure 15 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0086] Combine Figure 14-15 , the structure of another battery cover provided in this embodiment 7 is described in detail. Specifically, The preset groove includes: an eighth groove 83, wherein the eighth groove 83 may include but is not limited to: an eighth hole 831, an eighth side wall 832, and an eighth annular pit 833; wherein, the inner side surface of the eighth side wall 832 is machined with a second internal thread 834; the detection component 11 is connected to the battery body 14 through the eighth hole 831; preset holes are opened on the preset groove, which may include: an eighth hole 831 is opened on the eighth groove 83; wherein, the eighth groove 83 may be: a groove opened on the cover plate 10, the eighth hole 831 may be a hole opened on the eighth groove 83, and the eighth side wall 832 may be a side wall formed by stamping the eighth groove 83.

[0087] The inner side surface of the eighth side wall 832 may be: a side surface of the eighth side wall 832 facing the detection component 11 placed in the eighth groove 83 , and the second internal thread 834 may be: a thread on the inner side surface of the eighth side wall 832 ; The fixing structure includes: a hollow screw portion 81, the outer side of the hollow screw portion 81 is processed with a second external thread 811; the hollow screw portion 81 may include: a hollow annular component at the center of the component, The outer side surface of the hollow screw portion 81 is a curved surface on the side wall of the hollow screw portion 81 facing away from the center of the hollow screw portion 81 .

[0088] The battery cover in the seventh embodiment may include, but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a hollow screw portion 81 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover 10, and an eighth groove 83 for placing the detection assembly 11; wherein, The annular sealing ring 12 is placed in the eighth annular recess 833 , and the first bottom surface 111 of the detection assembly 11 is connected to the annular sealing ring 12 ; The hollow screw portion 81 is threadedly connected to the second internal thread 834 on the eighth side wall 832 through the second external thread 811, so that the fourth bottom surface 812 of the hollow screw portion 81 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the eighth groove 83, wherein the fourth bottom surface 812 of the hollow screw portion 81 can be a side surface of the hollow screw portion 81 facing the second bottom surface 113 of the detection component 11 placed in the eighth groove 83.

[0089] Preferably, the first outer side surface 112 of the detection component 11 and the second internal thread 834 of the eighth side wall 832 of the eighth groove 83 are connected or bonded by gluing.

[0090] Preferably, one or more first limiting protrusions are provided on the inner side surface of the eighth side wall 832, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11, and the first limiting protrusions are connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, wherein the first limiting protrusions correspond to the first limiting grooves one by one. Optionally, the positions of the limiting protrusions and the setting positions of the limiting grooves can be interchanged, that is, one or more second limiting grooves are provided on the inner side surface of the eighth side wall 832, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting grooves are connected to the second limiting protrusions by mortise and tenon joints.

[0091] Regarding the seventh embodiment, the installation steps of the detection assembly 11 and the hollow screw portion 81 may include but are not limited to: The annular sealing ring 12 is placed in the eighth annular pit 833, and the detection component 11 is placed, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; the hollow screw portion 81 is installed, and the second external thread 811 is screwed to the second internal thread 834 on the eighth side wall 832, so that the fourth bottom surface 812 of the hollow screw portion 81 is in contact with the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the eighth groove 83. Example

[0092] Figure 16 This is another exploded structural diagram of a battery cover provided in this application. Figure 17 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0093] Combine Figure 16-17 , the structure of another battery cover provided in this embodiment 8 is described in detail. Specifically, The preset groove includes: a ninth groove 93, and the ninth groove 93 may include but is not limited to: a ninth hole 931 and a ninth side wall 932; a preset hole is opened on the preset groove, including: a ninth hole 931 is opened on the ninth groove 93; the detection component 11 is connected to the battery body 14 through the ninth hole 931; the ninth groove 93 may be: a groove opened on the cover plate 10, the ninth hole 931 may be: a hole opened on the ninth groove 93, and the ninth side wall 932 may be: a side wall formed by stamping the ninth groove 93.

[0094] The fixed structure includes: a hollow aluminum tube 91, which is formed by a stamping process on the end and tail ends of an aluminum tube with a hollow center and a circular cross-section; the hollow aluminum tube 91 includes: a ninth annular pit 911 and a tenth annular pit 912; the ninth outer side surface 913 of the hollow aluminum tube 91 is welded to the ninth side wall 932; wherein, the ninth annular pit 911 is: a ring-shaped pit formed on the first end portion 10111 of the hollow aluminum tube 91, and the tenth annular pit 912 is: a ring-shaped pit formed on the second end portion 10112 of the hollow aluminum tube 91; the ninth outer side surface 913 is: a curved surface on one side of the side wall of the hollow aluminum tube 91 facing away from the center position of the aluminum tube, the ninth annular pit 911 can be a ring-shaped annular pit, and the tenth annular pit 912 can be a ring-shaped annular pit.

[0095] The battery cover in the eighth embodiment may include, but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a hollow aluminum tube 91 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11 and a preset sealing ring 92 connected to the second bottom surface 113 of the detection assembly 11, a cover 10, and a ninth groove 93 for placing the hollow aluminum tube 91; wherein, The annular sealing ring 12 is placed in the ninth annular recess 911 , and the first bottom surface 111 of the detection assembly 11 is connected to the annular sealing ring 12 ; A preset sealing ring 92 is placed in the tenth annular recess 912 , and the second bottom surface 113 of the detection assembly 11 is connected to the preset sealing ring 92 , wherein the preset sealing ring 92 may be an annular sealing ring; The annular sealing ring 12 placed in the ninth annular recess 911 and the preset sealing ring 92 placed in the tenth annular recess 912 respectively abut against the detection component 11 to fix the detection component 11 .

[0096] Preferably, the first outer side surface 112 of the detection component 11 is connected or bonded to the ninth inner side surface 914 of the hollow aluminum tube 91 by gluing. The ninth inner side surface 914 is a curved surface on the side wall of the hollow aluminum tube 91 facing the center of the aluminum tube.

[0097] Preferably, one or more first limiting protrusions are provided on the ninth inner side surface 914 of the hollow aluminum tube 91, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusions are connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11 by mortise and tenon joints, wherein the first limiting protrusions correspond to the first limiting grooves one by one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be interchanged, that is, one or more second limiting grooves are provided on the ninth inner side surface 914 of the hollow aluminum tube 91, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting grooves are connected to the second limiting protrusions by mortise and tenon joints.

[0098] Regarding the eighth embodiment, the installation steps of the detection assembly 11 and the hollow aluminum tube 91 may include but are not limited to: Place the annular sealing ring 12 in the ninth annular pit 911; place the detection component 11 in the hollow aluminum tube 91, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; continue to place the preset sealing ring 92 in the tenth annular pit 912, so that the annular sealing ring 12 placed in the ninth annular pit 911 and the preset sealing ring 92 placed in the tenth annular pit 912 are respectively abutted against the detection component 11 to fix the detection component 11, thereby further improving the airtightness of the battery body 14; place the hollow aluminum tube 91 in the ninth groove 93, and weld the ninth outer side surface 913 of the hollow aluminum tube 91 to the ninth side wall 932, so as to facilitate fixing the hollow aluminum tube 91 on the ninth side wall 932. Example

[0099] Figure 18 This is another exploded structural diagram of a battery cover provided in this application. Figure 19It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0100] Combine Figure 18-19 , the structure of another battery cover provided in this embodiment 9 is described in detail. Specifically, The preset groove includes: a tenth groove 102, the tenth groove 102 includes: a tenth hole 1021, and a tenth side wall 1022; a preset hole is opened on the preset groove, including: a tenth hole 1021 is opened on the tenth groove 102; the detection component 11 is connected to the battery body 14 through the tenth hole 1021; wherein, the tenth groove 102 is a groove opened on the cover plate 10, the tenth hole 1021 is a hole opened on the tenth groove 102; the tenth side wall 1022 is a side wall formed by the tenth groove 102 through a stamping process.

[0101] The fixed structure includes: a first hollow structure 101, the first hollow structure 101 includes: a raised portion 1011 and a bent portion 1012, wherein an eleventh annular pit 10121 is formed on the bent portion 1012; the tenth side wall 1022 abuts against the bent portion 1012; wherein the eleventh annular pit 10121 is: a pit with an annular shape formed on the bent portion 1012.

[0102] The battery cover in the ninth embodiment may include but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a first hollow structure 101 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover 10, and a tenth groove 102 for placing the detection assembly 11; wherein, The annular sealing ring 12 is placed in the eleventh annular pit 10121, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12, the first end 10111 of the protrusion 1011 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the tenth groove 102, and the second end 10112 of the protrusion 1011 is welded to the tenth side wall 1022.

[0103] Preferably, the first outer side surface 112 of the detection component 11 and the tenth inner side surface 1013 of the first hollow structure 101 are connected or bonded by gluing.

[0104] Preferably, one or more first limiting protrusions are provided on the tenth inner side surface 1013 of the first hollow structure 101, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11, and the first limiting protrusion is connected to the first limiting groove provided on the first outer side surface 112 of the detection component 11 by mortise and tenon, wherein the first limiting protrusion corresponds to the first limiting groove one-to-one. Optionally, the position of the limiting protrusion and the position of the limiting groove can be interchanged, that is, one or more second limiting grooves are provided on the tenth inner side surface 1013 of the first hollow structure 101, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting groove is connected to the second limiting protrusion by mortise and tenon. Wherein, the tenth inner side surface 1013 is a side surface of the tenth side wall 1022 facing the detection component 11 placed in the tenth groove 102; Regarding the ninth embodiment, the installation steps of the detection assembly 11 and the first hollow structure 101 may include but are not limited to: Place the detection component 11 in the first hollow structure 101; place the annular sealing ring 12 in the eleventh annular pit 10121; bend the bending portion 1012 so that the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12, and the first end 10111 of the protrusion 1011 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the tenth groove 102; place the first hollow structure 101 in the tenth groove 102, and weld it to the tenth side wall 1022 through the second end 10112 of the protrusion 1011. Example

[0105] Figure 20 This is another exploded structural diagram of a battery cover provided in this application. Figure 21 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0106] Combine Figure 20-21 , the structure of another battery cover provided in this embodiment 10 is described in detail. Specifically, The preset groove includes: a twelfth groove 122, and the twelfth groove 122 may include but is not limited to: a twelfth hole 1221, a twelfth side wall 1222, and a twelfth annular pit 1223, wherein the twelfth side wall 1222 is machine-processed with a third internal thread 12221; a preset hole is opened on the preset groove, including: a twelfth hole 1221 is opened on the twelfth groove 122; the detection component 11 is connected to the battery body 14 through the twelfth hole 1221; wherein the twelfth groove 122 is a groove opened on the cover plate 10, and the twelfth hole 1221 is a hole opened on the twelfth groove 122; the twelfth side wall 1222 is a side wall formed by stamping of the twelfth groove 122; the twelfth annular pit 1223 is: a pit with an annular shape formed on the twelfth groove 122.

[0107] The fixing structure includes: a second hollow structure 121, which may include but is not limited to: an annular portion 1212 and a cavity portion 1211, wherein the outer surface of the cavity portion 1211 is processed with a third external thread 12111; The battery cover in the tenth embodiment may include, but is not limited to: a detection assembly 11 for detecting the temperature and pressure of the battery body 14, a second hollow structure 121 for fixing the detection assembly 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection assembly 11, a cover 10, and a twelfth groove 122 for accommodating the detection assembly 11; wherein the outer side surface of the cavity portion 1211 is: a side wall of the cavity portion 1211 with a curved surface facing away from the side surface of the detection assembly 11 placed in the cavity portion 1211; The annular sealing ring 12 is placed in the twelfth annular recess 1223 , and the first bottom surface 111 of the detection assembly 11 is connected to the annular sealing ring 12 ; The second hollow structure 121 is screwed to the third internal thread 12221 on the twelfth side wall 1222 via the third external thread 12111, so that the annular portion 1212 of the second hollow structure 121 abuts against the second bottom surface 113 of the detection component 11 to fix the detection component 11 placed in the twelfth groove 122.

[0108] Preferably, the first outer side surface 112 of the detection component 11 and the inner side surface of the cavity portion 1211 of the second hollow structure 121 are connected or bonded by gluing, and the inner side surface of the cavity portion 1211 is: the side wall of the cavity portion 1211 with a curved shape faces a side surface of the detection component 11 placed in the cavity portion 1211.

[0109] Preferably, one or more first limiting protrusions are provided on the inner side surface of the twelfth side wall 1222, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusion is connected to the limiting groove provided on the first outer side surface 112 of the detection component 11 by mortise and tenon, wherein the first limiting protrusion corresponds to the first limiting groove one-to-one. Optionally, the positions of the limiting protrusion and the positions of the limiting groove can be interchanged, that is, one or more second limiting grooves are provided on the inner side surface of the twelfth side wall 1222, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting groove is connected to the second limiting protrusion by mortise and tenon; wherein the inner side surface of the twelfth side wall 1222 is: the twelfth side wall 1222 faces the side of the detection component 11 in the twelfth groove 122.

[0110] Regarding the tenth embodiment, the installation steps of the detection assembly 11 and the second hollow structure 121 may include but are not limited to: Place the annular sealing ring 12 in the twelfth annular pit 1223; place the detection component 11 in the twelfth groove 122, so that the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; install the second hollow structure 121, so that the third external thread 12111 is screwed with the third internal thread 12221 on the twelfth side wall 1222, so that the bottom surface of the annular portion 1212 of the second hollow structure 121 abuts against the second bottom surface 113 of the detection component 11, so as to fix the detection component 11 placed in the twelfth groove 122.

[0111] Example 11: Figure 22 This is another exploded structural diagram of a battery cover provided in this application. Figure 23 It is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0112] Combine Figure 22-23 , the structure of another battery cover provided in this embodiment eleven is described in detail. Specifically, The preset groove includes: a thirteenth groove 132, and the thirteenth groove 132 may include but is not limited to: a thirteenth hole 1321, a thirteenth sidewall 1322, and a thirteenth annular pit 1323; the preset groove is provided with preset holes, including: a thirteenth hole 1321 is provided on the thirteenth groove 132; the detection component 11 is connected to the battery body 14 through the thirteenth hole 1321; wherein the thirteenth groove 132 may be a groove provided on the cover plate 10, and the thirteenth hole 1321 may be a hole provided on the thirteenth groove 132; the thirteenth sidewall 1322 may be a sidewall formed by stamping the thirteenth groove 132; the thirteenth annular pit 1323 may be: a pit in the shape of an annulus formed on the thirteenth groove 132; The shape of the detection component 11 is cylindrical; The fixing structure includes: a third hollow structure 1314 , which may include but is not limited to: a first ring portion 1311 , a welding portion 1312 , and a second ring portion 1313 ; The battery cover in the eleventh embodiment may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a third hollow structure 1314 for fixing the detection component 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection component 11, a cover 10, and a thirteenth groove 132 for placing the detection component 11; wherein, The annular sealing ring 12 is placed in the thirteenth annular pit 1323, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12, the first ring portion 1311 abuts against the second bottom surface 113 of the detection component 11, and the second ring portion 1313 abuts against the first outer side surface 112 of the detection component 11, so as to jointly fix the detection component 11 placed in the thirteenth groove 132, and the welding portion 1312 is welded to the cover plate 10.

[0113] Preferably, the first outer side surface 112 of the detection component 11 and the sixth inner side surface 13131 of the second ring portion 1313 of the third hollow structure 1314 are connected or bonded by gluing.

[0114] Preferably, one or more first limiting protrusions are provided on the sixth inner side surface 13131 of the second ring portion 1313, and one or more first limiting grooves are provided on the first outer side surface 112 of the detection component 11. The first limiting protrusion is connected to the first limiting groove provided on the first outer side surface 112 of the detection component 11 by mortise and tenon, wherein the first limiting protrusion corresponds to the first limiting groove one-to-one. Optionally, the position of the first limiting protrusion and the position of the first limiting groove can be interchanged, that is, one or more second limiting grooves are provided on the sixth inner side surface 13131 of the second ring portion 1313, and correspondingly, one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11, and the second limiting groove is connected to the second limiting protrusion by mortise and tenon; wherein the sixth inner side surface 13131 can be: a side curved surface facing the second ring portion 1313 of the detection component 11 placed in the thirteenth groove 132.

[0115] Regarding the eleventh embodiment, the installation steps of the detection assembly 11 and the third hollow structure 1314 may include but are not limited to: Place the annular sealing ring 12 in the thirteenth annular pit 1323; place the detection component 11 in the thirteenth groove 132 so that the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; install the third hollow structure 1314 so that the first ring portion 1311 abuts against the second bottom surface 113 of the detection component 11, and the second ring portion 1313 abuts against the first outer side surface 112 of the detection component 11, so as to jointly fix the detection component 11 placed in the thirteenth groove 132, and the welding portion 1312 is welded to the cover plate 10.

[0116] It should be noted that the first limiting groove in the present application can also be used as a channel for injection molding glue.

[0117] Figure 1-23 It is only used to illustrate this application and should not limit the scope of protection of this application.

[0118] The above are merely optional embodiments of the present application and do not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the application concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery cover, characterized in that: include: A detection assembly (11) for detecting the temperature and pressure of a battery body (14); a fixing structure for fixing the detection assembly (11); an annular sealing ring (12) connected to a first bottom surface (111) of the detection assembly (11); a cover plate (10) for connecting to the battery body (14); and a preset groove provided on the cover plate (10), wherein the preset groove is provided with a preset hole, and the detection assembly (11) is connected to the battery body (14) through the preset hole; The annular sealing ring (12) is also connected to the fixed structure; the shape of the detection component (11) includes: a cylinder or a truncated cone.

2. The battery cover according to claim 1, wherein: The preset groove with the preset hole formed on the cover plate (10) includes: a liquid filling port of the battery.

3. The battery cover according to claim 1, wherein: The fixing structure is a first annular base (21) fixedly connected to the detection component (11); wherein the first annular base (21) comprises: a circular portion (211) of the first annular base (21), a base (212) of the first annular base (21), a first cavity (213) formed by the enclosed space between the circular portion (211) and the base (212), a target annular pit (214) provided on the base (212), a target hole (215) provided on the base (212), and and one or more limiting bosses (216) provided on the annular portion (211); the first annular base (21) is formed by an integral molding process; a preset hole is provided on the preset groove, including: a second hole is provided on the second groove (23); the target hole (215) includes: a hole located in the enclosed area of ​​the target annular pit (214) and provided on the base plate (212); the target annular pit (214) includes: an annular pit in an annular shape provided on the base plate (212); The detection component (11) is in communication with the battery body (14) through the target hole (215) and the second hole; The annular sealing ring (12) is placed in the target annular pit (214), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); The chassis (212) is welded to the cover plate (10); The detection component (11) is placed in the first cavity (213), and the limiting boss (216) abuts against the second bottom surface (113) of the detection component (11) to fix the detection component (11).

4. The battery cover according to claim 1, wherein: The fixing structure is an annular component (15) that fixes the detection component (11); the fifth bottom surface (152) of the annular component (15) abuts against the second bottom surface (113) of the detection component (11) to fix the detection component (11); The preset groove includes: a first groove (13); the first groove (13) includes: a first hole (131), a first side wall (134), and a first annular pit (133); wherein the first groove (13) is formed by the cover plate (10) based on a stamping process; wherein the first groove (13) includes: a groove opened on the cover plate (10); the first hole (131) includes: a hole opened on the first groove (13); the first side wall (134) includes: a side wall formed by the first groove (13) after the stamping process; and the first annular pit (133) includes: an annular pit opened on the first groove (13); The preset groove is provided with a preset hole, including: a first hole (131) is provided on the first groove (13); the detection component (11) is connected to the battery body (14) through the first hole (131); The second outer side surface (151) of the annular component (15) is welded to the first side wall (134) of the first groove (13); the detection component (11) comprises: a first bottom surface (111); the annular sealing ring (12) is placed in the first annular pit (133); the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); the annular component (15) comprises: a component in the shape of a three-dimensional circular ring; the second outer side surface (151) of the annular component (15) comprises: a side curved surface of the annular component (15) facing away from the center position of the annular component (15).

5. The battery cover according to claim 1, wherein: The preset groove includes: a fourth groove (43); The fixing structure comprises: a hollow nut (33) and a hollow screw (31); the hollow nut (33) comprises: a first internal thread (332); the hollow screw (31) comprises: a second side wall (310), a hole portion (311), a second annular base (312), a second cavity (313), an annular recess portion (314), and a first external thread (315); the second annular base (312) is connected to the cover plate (10) by welding; The annular sealing ring (12) is placed in the annular recess (314), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); The preset groove is provided with a preset hole, including: a fourth hole is provided on the fourth groove (43); the detection component (11) is connected to the battery body (14) through the fourth hole and the hole portion (311); The detection component (11) is placed in the second cavity (313), and the hollow nut (33) is screwed to the first internal thread (332) of the hollow screw (31) through the first external thread (315), so that the third bottom surface (333) of the hollow nut (33) abuts against the second bottom surface (113) of the detection component (11), thereby fixing the detection component (11).

6. The battery cover according to claim 1, wherein: The preset groove includes: a fifth groove (53); the fifth groove (53) includes: a fifth hole (531), a fifth side wall (532), and a fifth annular pit (533); a preset hole is opened on the preset groove, including: a fifth hole (531) is opened on the fifth groove (53); the detection component (11) is connected to the battery body (14) through the fifth hole (531); wherein the fifth groove (53) includes: a groove opened on the cover plate (10); the fifth hole (531) includes: a hole opened on the fifth groove (53); the fifth side wall (532) includes: a side wall formed by stamping the fifth groove (53); the fifth annular pit (533) includes: an annular pit formed on the fifth side wall (532) in an annular shape; The fixing structure includes: a retaining spring; the retaining spring includes: an annular retaining spring (41) in an annular shape or a polygonal retaining spring in a polygonal shape; When the retaining spring is an annular retaining spring (41), the annular sealing ring (12) is placed in the fifth annular recess (533), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); the side surface of the annular retaining spring (41) is elastically connected to the fifth side wall (532), and the sixth bottom surface of the annular retaining spring (41) is in contact with the second bottom surface (113) of the detection component (11) to fix the detection component (11) placed in the fifth groove (53).

7. The battery cover according to claim 1, wherein: The preset groove includes: a sixth groove (63), the sixth groove (63) includes: a sixth hole (631), a sixth sidewall (632), and a sixth annular pit (633); the preset hole is opened on the preset groove, including: a sixth hole (631) is opened on the sixth groove (63); the detection component (11) is connected to the battery body (14) through the sixth hole (631); wherein the sixth groove (63) includes: a groove opened on the cover plate (10), the sixth hole (631) includes: a hole opened on the sixth groove (63), the sixth sidewall (632) includes: a sidewall formed by stamping the sixth groove (63), and the sixth annular pit (633) includes: an annular pit formed on the sixth groove (63); The fixing structure comprises: a concave ring portion (61), wherein the concave ring portion (61) is formed by stamping the sixth side wall (632); The annular sealing ring (12) is placed in the sixth annular recess (633), and the first bottom surface (111) of the detection component (11) is connected to the upper surface of the annular sealing ring (12); The first edge surface (611) of the concave ring portion (61) abuts against the second bottom surface (113) of the detection component (11) to fix the detection component (11) placed in the sixth groove (63).

8. The battery cover according to claim 1, wherein: The preset groove includes: a seventh groove (73), the seventh groove (73) includes: a seventh hole (731), a seventh sidewall (732), and a seventh annular pit (733); the preset hole is provided on the preset groove, including: a seventh hole (731) is provided on the seventh groove (73); wherein the seventh groove (73) includes: a groove provided on the cover plate (10), the seventh hole (731) includes: a hole provided on the seventh groove (73), the seventh sidewall (732) includes: a sidewall formed by stamping the seventh groove (73), and the seventh annular pit (733) includes: a pit in the shape of an annulus formed on the seventh sidewall (732); The detection component (11) is in communication with the battery body (14) via the seventh hole (731); The fixed structure comprises: a plurality of movable parts (71); the movable parts (71) are formed by stamping the seventh side wall (732); The annular sealing ring (12) is placed in the seventh annular pit (733), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); The second edge surface (711) of the movable portion (71) abuts against the second bottom surface (113) of the detection component (11) to fix the detection component (11) placed in the seventh groove (73).

9. The battery cover according to claim 1, wherein: The preset groove includes: an eighth groove (83), the eighth groove (83) includes: an eighth hole (831), an eighth side wall (832), and an eighth annular pit (833); wherein, the eighth side wall (832) is machined with a second internal thread (834); the preset groove is provided with a preset hole, including: an eighth hole (831) is provided on the eighth groove (83); wherein, the eighth groove (83) includes: a groove provided on the cover plate (10), the eighth hole (831) includes: a hole provided on the eighth groove (83), and the eighth side wall (832) includes: a side wall of the eighth groove (83) formed by stamping; The detection component (11) is in communication with the battery body (14) via the eighth hole (831); The fixing structure comprises: a hollow screw portion (81), the outer side surface of the hollow screw portion (81) being processed with a second external thread (811); The annular sealing ring (12) is placed in the eighth annular recess (833), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); The hollow screw portion (81) is screwed to the second internal thread (834) on the eighth side wall (832) via the second external thread (811), so that the fourth bottom surface (812) of the hollow screw portion (81) abuts against the second bottom surface (113) of the detection component (11), thereby fixing the detection component (11) placed in the eighth groove (83).

10. The battery cover according to claim 1, wherein: The preset groove includes: a tenth groove (102), the tenth groove (102) includes: a tenth hole (1021), and a tenth side wall (1022); the preset hole is provided on the preset groove, including: a tenth hole (1021) is provided on the tenth groove (102); the detection component (11) is connected to the battery body (14) through the tenth hole (1021); wherein the tenth groove (102) includes: a groove provided on the cover plate (10), the tenth hole (1021) includes: a hole provided on the tenth groove (102); the tenth side wall (1022) includes: a side wall of the tenth groove (102) formed by a stamping process; The fixing structure comprises: a first hollow structure (101), the first hollow structure (101) comprising: a protruding portion (1011) and a bent portion (1012), wherein an eleventh annular recess (10121) is formed on the bent portion (1012); the tenth side wall (1022) abuts against the bent portion (1012), and the eleventh annular recess (10121) comprises: an annular recess formed on the bent portion (1012); The annular sealing ring (12) is placed in the eleventh annular pit (10121), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12), the first end (10111) of the protrusion (1011) abuts against the second bottom surface (113) of the detection component (11) to fix the detection component (11) placed in the tenth groove (102), and the second end (10112) of the protrusion (1011) is welded to the tenth side wall (1022).

11. The battery cover according to claim 1, wherein: The preset groove includes: a twelfth groove (122), the twelfth groove (122) includes: a twelfth hole (1221), a twelfth side wall (1222), and a twelfth annular pit (1223), wherein the twelfth side wall (1222) is machined with a third internal thread (12221); the preset groove is provided with a preset hole, including: a twelfth hole (1221) is provided on the twelfth groove (122); the detection component (11) is connected to the battery body (14) through the twelfth hole (1221); wherein the twelfth groove (122) includes: a groove provided on the cover plate (10), the twelfth hole (1221) includes: a hole provided on the twelfth groove (122); the twelfth side wall (1222) includes: a side wall formed by the twelfth groove (122) through stamping; The twelfth annular recess (1223) comprises: a recess in an annular shape formed on the twelfth groove (122); The fixing structure comprises: a second hollow structure (121), the second hollow structure (121) comprises: an annular portion (1212) and a cavity portion (1211), wherein the outer side surface of the cavity portion (1211) is processed with a third external thread (12111); The annular sealing ring (12) is placed in the twelfth annular recess (1223), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); The second hollow structure (121) is screwed to the third internal thread (12221) on the twelfth side wall (1222) via the third external thread (12111), so that the annular portion (1212) of the second hollow structure (121) abuts against the second bottom surface (113) of the detection component (11), thereby fixing the detection component (11) placed in the twelfth groove (122).

12. The battery cover according to claim 1, wherein: The preset groove includes: a thirteenth groove (132), the thirteenth groove (132) includes: a thirteenth hole (1321), a thirteenth side wall (1322), and a thirteenth annular pit (1323); the preset hole is opened on the preset groove, including: a thirteenth hole (1321) is opened on the thirteenth groove (132); the detection component (11) is connected with the battery body (14) through the thirteenth hole (1321); wherein the thirteenth groove (132) includes: a groove opened on the cover plate (10), the thirteenth hole (1321) includes: a hole opened on the thirteenth groove (132); the thirteenth side wall (1322) includes: a side wall formed by stamping the thirteenth groove (132); the thirteenth annular pit (1323) includes: a pit in the shape of an annulus formed on the thirteenth groove (132); The detection component (11) is in the shape of a cylinder; The fixing structure comprises: a third hollow structure (1314); the third hollow structure (1314) comprises: a first ring portion (1311) and a welding portion (1312); The annular sealing ring (12) is placed in the thirteenth annular recess (1323), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12), the first ring portion (1311) abuts against the second bottom surface (113) of the detection component (11) to fix the detection component (11) placed in the thirteenth recess (132), and the welding portion (1312) is welded to the cover plate (10).

13. The battery cover according to claim 5, wherein: The hollow nut (33) further includes a fourteenth annular recess (331), a preset sealing ring (92) is further placed in the fourteenth annular recess (331), and the second bottom surface (113) of the detection component (11) is connected to the preset sealing ring (92), wherein the preset sealing ring (92) is an annular sealing ring.

14. The battery cover according to claim 1, wherein: The inner side surface of the fixing structure is provided with one or more first limiting protrusions, and the first outer side surface (112) of the detection component (11) is provided with one or more first limiting grooves, the first limiting protrusions and the first limiting grooves are connected by mortise and tenon, and the first limiting protrusions and the first limiting grooves correspond one to one; or, One or more second limiting grooves are provided on the inner side surface of the fixing structure, and one or more second limiting protrusions are provided on the first outer side surface (112) of the detection component (11), the second limiting protrusions are connected to the second limiting grooves by mortise and tenon, and the second limiting protrusions correspond to the second limiting grooves one by one.

15. The battery cover according to claim 1, wherein: The first outer side surface (112) of the detection component (11) is connected to the inner side surface of the fixing structure by gluing.

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