A battery cover plate

Abstract

The present application discloses a battery cover plate, 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 first bottom surface of the detection component, a cover plate for connecting the battery body, and a preset groove formed in the cover plate, wherein a preset hole is formed in the preset groove, and the detection component is communicated with the battery body through the preset hole; the annular sealing ring is further connected to the fixing structure. By adopting the present application, the problem that the internal air pressure of the battery cannot be actually tested after the battery injection port is encapsulated can be solved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery cover plate. Background Art

[0002] The liquid injection port assembly is an important safety component on the battery. The liquid injection port assembly is used to seal the liquid injection port of the battery to prevent the electrolyte of the battery from leaking out. However, after the liquid injection port of the battery is sealed by the liquid injection port assembly, during the subsequent battery performance detection process, the internal air pressure of the battery main body cannot be actually measured in real time, and thus the internal air pressure value of the battery at different voltages cannot be quantitatively analyzed in real time. Therefore, the safety monitoring mechanism of the battery is poor and the safety of the battery is low. Summary of the Invention

[0003] To solve the above technical problems, this application provides a battery cover plate, which can solve the problem that the internal air pressure of the battery main body cannot be actually measured after the battery liquid injection port is sealed. By monitoring the temperature and air pressure of the battery in real time, various index states presented by the battery during the formation and formation process can be observed, improving the safety guarantee of the battery.

[0004] In a first aspect, this application provides a battery cover plate, including: a detection component for detecting the temperature and pressure of the battery main body, a fixing structure for fixing the detection component, an annular sealing ring connected to the first bottom surface of the detection component, a cover plate for connecting the battery main body, and a preset groove opened on the cover plate. A preset hole is opened on the preset groove, and the detection component is communicated with the battery main body through the preset hole;

[0005] The annular sealing ring is also connected to the fixing structure.

[0006] An annular sealing ring is adopted to prevent air leakage of the battery main body and prevent external air from entering the battery main body, which can improve the airtightness of the battery main body.

[0007] In an optional implementation manner, the preset groove with a preset hole opened on the cover plate includes: the liquid injection port of the battery.

[0008] In an optional implementation manner, the shape of the detection component includes: a cylinder or a frustum of a cone.

[0009] In an alternative embodiment, the fixing structure is a first annular base fixedly connecting the detection component; wherein, the first annular base includes: a circular ring portion of the first annular base, a chassis of the first annular base, a first cavity formed by an enclosed space between the circular ring portion and the chassis, a target annular pit formed on the chassis, a target hole formed on the chassis, and one or more limiting protrusions arranged on the circular ring portion; the first annular base is formed by an integral molding process; the preset groove is provided with a preset hole, including: a second hole is provided in the second groove; the target hole includes: a hole formed on the chassis and located within the enclosed area of the target annular pit; the target annular pit includes: an annular pit with an annular shape formed on the chassis;

[0010] The detection component is communicated with the battery body through the target hole and the second hole;

[0011] 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;

[0012] The chassis is welded to the cover plate;

[0013] The detection component is placed in the first cavity, and the limiting protrusion abuts against the second bottom surface of the detection component to fix the detection component.

[0014] In an alternative 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;

[0015] The preset groove includes: a first groove; the first groove includes: a first hole, a first side wall, 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 formed on the cover plate, the first hole includes: a hole formed on the first groove, the first side wall includes: a side wall formed after the first groove undergoes a stamping process, and the first annular pit includes: an annular pit formed on the first groove;

[0016] The preset groove is provided with a preset hole, including: a first hole is provided in the first groove; the detection component is communicated with the battery body through the first hole;

[0017] The second outer side surface of the annular component is welded and connected to the first side wall of the first groove; The detection assembly includes: a first bottom surface; The annular sealing ring is placed in the first annular pit; The first bottom surface of the detection assembly is connected to the annular sealing ring; The annular component includes: a component with a three-dimensional circular ring shape; The second outer side surface of the annular component is: a curved surface on one side of the annular component facing away from the central position of the annular component.

[0018] In an alternative embodiment, the preset groove includes: a fourth groove;

[0019] 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;

[0020] The annular sealing ring is placed in the annular pit portion, and the first bottom surface of the detection assembly is connected to the annular sealing ring;

[0021] A preset hole is provided in the preset groove, including: a fourth hole is provided in the fourth groove; The detection assembly communicates with the battery body through the fourth hole and the hole portion;

[0022] The detection assembly is placed in the cavity. After the hollow nut is screwed with the first internal thread of the hollow screw through the first external thread, the third bottom surface of the hollow nut abuts against the second bottom surface of the detection assembly to fix the above detection assembly.

[0023] Wherein, the chassis and the cover plate are connected by welding to prevent air leakage of the battery body, 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 air leakage of the battery body, and it is also convenient for the chassis at the lower part of the hollow screw to be easily welded to the cover plate.

[0024] In an alternative embodiment, the preset groove includes: a fifth groove; The fifth groove includes: a fifth hole, a fifth side wall, a fifth annular pit; A preset hole is provided in the preset groove, including: a fifth hole is provided in the fifth groove; The detection assembly communicates with the battery body through the fifth hole; Wherein, the fifth groove includes: a groove provided on the cover plate, the fifth hole includes: a hole provided in the fifth groove, the fifth side wall includes: a side wall formed by stamping the fifth groove, and the fifth annular pit includes: an annular pit with an annular shape formed on the fifth side wall;

[0025] The fixing structure includes: a snap ring; The snap ring includes: an annular snap ring with an annular shape or a polygonal snap ring with a polygonal shape;

[0026] When the snap ring is an annular snap ring, the annular sealing ring is placed in the fifth annular pit, and the first bottom surface of the detection assembly is connected to the annular sealing ring; the side surface of the annular snap ring is elastically connected to the fifth side wall, and the sixth bottom surface of the annular snap ring abuts against the second bottom surface of the detection assembly to fix the detection assembly placed in the fifth groove.

[0027] In an alternative embodiment, the preset groove includes: a sixth groove, and the sixth groove includes: a sixth hole, a sixth side wall, and a sixth annular pit; a preset hole is formed in the preset groove, including: a sixth hole is formed in the sixth groove; the detection assembly communicates with the battery body through the sixth hole; wherein, the sixth groove includes: a groove formed in the cover plate, the sixth hole includes: a hole formed in the sixth groove, the sixth side wall includes: a side wall formed by stamping the sixth groove, and the sixth annular pit includes: an annular pit formed in the sixth groove;

[0028] The fixing structure includes: a concave ring portion, and the concave ring portion is formed by stamping the sixth side wall;

[0029] The annular sealing ring is placed in the sixth annular pit, and the first bottom surface of the detection assembly is connected to the upper surface of the annular sealing ring;

[0030] The first edge surface of the concave ring portion abuts against the second bottom surface of the detection assembly to fix the detection assembly placed in the sixth groove.

[0031] In an alternative embodiment, the preset groove includes: a seventh groove, and the seventh groove includes: a seventh hole, a seventh side wall, and a seventh annular pit; a preset hole is formed in the preset groove, including: a seventh hole is formed in the seventh groove; wherein, the seventh groove includes: a groove formed in the cover plate, the seventh hole includes: a hole formed in the seventh groove, the seventh side wall includes: a side wall formed by stamping the seventh groove, and the seventh annular pit includes: an annular pit formed in the seventh side wall;

[0032] The detection assembly communicates with the battery body through the seventh hole;

[0033] The fixing structure includes: a plurality of movable portions; the movable portions are formed by stamping the seventh side wall;

[0034] The annular sealing ring is placed in the seventh annular pit, and the first bottom surface of the detection assembly is connected to the annular sealing ring;

[0035] The second edge surface of the movable portion abuts against the second bottom surface of the detection assembly to fix the detection assembly placed in the seventh groove.

[0036] In an alternative embodiment, the preset groove includes: an eighth groove, and the eighth groove includes: an eighth hole, an eighth sidewall, and an eighth annular pit; wherein, a second internal thread is machined on the eighth sidewall by a machine tool; a preset hole is provided on the preset groove, including: an eighth hole is provided on the eighth groove; wherein, the eighth groove includes: a groove provided on the cover plate, the eighth hole includes: a hole provided on the eighth groove, and the eighth sidewall includes: the sidewall formed by stamping the eighth groove;

[0037] The detection component communicates with the battery body through the eighth hole;

[0038] The fixing structure includes: a hollow screw part, and a second external thread is machined on the outer side surface of the hollow screw part;

[0039] 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;

[0040] The hollow screw part is screwed with the second internal thread on the eighth sidewall through the second external thread, so that the fourth bottom surface of the hollow screw part abuts against the second bottom surface of the detection component to fix the detection component placed in the eighth groove.

[0041] In an alternative embodiment, the preset groove includes: a ninth groove, and the ninth groove includes: a ninth hole and a ninth sidewall; a preset hole is provided on the preset groove, including: a ninth hole is provided on the ninth groove; the detection component communicates with the battery body through the ninth hole; wherein, the ninth groove includes: a groove provided on the cover plate, the ninth hole includes: a hole provided on the ninth groove, and the ninth sidewall includes: the sidewall formed by stamping the ninth groove;

[0042] The fixing structure includes: a hollow aluminum tube, which is formed by stamping the head and tail ports of an aluminum tube with a hollow center and a circular cross-section; the hollow aluminum tube includes: a ninth annular pit and a tenth annular pit; the ninth outer side surface of the hollow aluminum tube is welded to the ninth sidewall; the ninth outer side surface includes: a curved surface on one side of the sidewall of the hollow aluminum tube facing away from the center of the aluminum tube;

[0043] 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;

[0044] A preset sealing ring is also 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 a kind of annular sealing ring;

[0045] The annular sealing ring placed in the ninth annular pit and the preset sealing ring placed in the tenth annular pit are respectively in contact with the detection component to fix the detection component.

[0046] With this implementation, through the application of the preset sealing ring, the airtightness of the battery body is further improved, and it is also convenient to fix the hollow aluminum tube on the side wall.

[0047] In an alternative implementation, the preset groove includes: a tenth groove, the tenth groove includes: a tenth hole, a tenth side wall; a preset hole is provided on the preset groove, including: a tenth hole is provided on the tenth groove; the detection component communicates with 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 side wall includes: the side wall formed by the tenth groove through a stamping process;

[0048] The fixing structure includes: a first hollow structure, the first hollow structure includes: a convex portion and a bent portion, wherein, an eleventh annular pit is formed on the bent portion; the tenth side wall is in contact with the bent portion, and the eleventh annular pit includes: an annular pit formed on the bent portion;

[0049] 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 convex portion 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 convex portion is welded to the tenth side wall.

[0050] In an alternative implementation, the preset groove includes: a twelfth groove, the twelfth groove includes: a twelfth hole, a twelfth side wall, a twelfth annular pit, wherein, a third internal thread is machined on the twelfth side wall; a preset hole is provided on the preset groove, including: a twelfth hole is provided on the twelfth groove; the detection component communicates with 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 side wall includes: the side wall formed by the twelfth groove through stamping; the twelfth annular pit includes: an annular pit formed on the twelfth groove;

[0051] The fixing structure includes: a second hollow structure, the second hollow structure includes: an annular portion and a cavity portion, wherein, a third external thread is machined on the outer side surface of the cavity portion;

[0052] 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;

[0053] The second hollow structure is screwed to the third internal thread on the twelfth side wall through the third external thread, so that the annular part of the second hollow structure abuts against the second bottom surface of the detection component, so as to fix the detection component placed in the twelfth groove.

[0054] In an alternative embodiment, the preset groove includes: a thirteenth groove, and the thirteenth groove includes: a thirteenth hole, a thirteenth side wall, and a thirteenth annular pit; a preset hole is provided on the preset groove, including: a thirteenth hole is provided on the thirteenth groove; the detection component communicates with the battery body through the thirteenth hole; wherein, the thirteenth groove includes: a groove provided on the cover plate, the thirteenth hole includes: a hole provided on the thirteenth groove; the thirteenth side wall includes: the side wall formed by stamping the thirteenth groove; the thirteenth annular pit includes: an annular pit formed on the thirteenth groove;

[0055] The shape of the detection component is cylindrical;

[0056] The fixing structure includes: a third hollow structure, and the third hollow structure includes: an inner ring part and a welding part;

[0057] 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, and the first ring part abuts against the second bottom surface of the detection component, so as to fix the detection component placed in the thirteenth groove, and the welding part is welded to the cover plate.

[0058] In an alternative embodiment, the hollow nut further 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.

[0059] In an alternative embodiment, one or more first limiting protrusions are provided on the inner side surface of the fixing structure, one or more first limiting grooves are provided on the first outer side surface of the detection component, the first limiting protrusions are mortise-and-tenon connected with the first limiting grooves, and the first limiting protrusions correspond to the first limiting grooves one by one; or,

[0060] One or more second limiting grooves are provided on the inner side surface of the fixing structure, one or more second limiting protrusions are provided on the first outer side surface of the detection component, the second limiting protrusions are mortise-and-tenon connected with the second limiting grooves, and the second limiting protrusions correspond to the second limiting grooves one by one.

[0061] In an alternative embodiment, the first outer side surface of the detection component is connected to the inner side surface of the fixing structure by an adhesive method.

[0062] The present application discloses a battery cover plate, including: a detection component for detecting the temperature and pressure of the 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 plate for connecting the battery body, and a preset groove opened on the cover plate, a preset hole is opened on the preset groove, and the detection component communicates with the battery body through the preset hole; the annular sealing ring is also connected to the fixing structure.

[0063] By adopting the present application, the problem that the internal air pressure of the battery cannot be actually tested after the battery injection port is encapsulated can be solved. That is, by monitoring the temperature and air pressure of the battery in real time, various index states presented by the battery during the formation and formation process can be observed, improving the safety guarantee of the battery. Description of the Drawings

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0065] Figure 1 It is a schematic structural diagram of a battery cover plate provided by the present application;

[0066] Figure 2 It is a schematic exploded structural diagram of a battery cover plate provided by the present application;

[0067] Figure 3 It is a schematic structural diagram of a first annular base 21 with a detection component 11 placed thereon provided by the present application;

[0068] Figure 4 It is a schematic structural diagram of a first annular base 21 provided by the present application;

[0069] Figure 5 It is a schematic structural diagram of another battery cover plate provided by the present application;

[0070] Figure 6 It is a schematic exploded structural diagram of another battery cover plate provided by the present application;

[0071] Figure 7 It is a schematic cross-sectional structural diagram of another battery cover plate provided by the present application;

[0072] Figure 8 It is a schematic exploded structural diagram of yet another battery cover plate provided by the present application;

[0073] Figure 9It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0074] Figure 10 It is a schematic diagram of the exploded structure of another battery cover plate provided by this application;

[0075] Figure 11 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0076] Figure 12 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0077] Figure 13 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0078] Figure 14 It is a schematic diagram of the exploded structure of another battery cover plate provided by this application;

[0079] Figure 15 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0080] Figure 16 It is a schematic diagram of the exploded structure of another battery cover plate provided by this application;

[0081] Figure 17 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0082] Figure 18 It is a schematic diagram of the exploded structure of another battery cover plate provided by this application;

[0083] Figure 19 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0084] Figure 20 It is a schematic diagram of the exploded structure of another battery cover plate provided by this application;

[0085] Figure 21 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0086] Figure 22 It is a schematic diagram of the exploded structure of another battery cover plate provided by this application;

[0087] Figure 23 It is a schematic cross-sectional structure diagram of another battery cover plate provided by this application;

[0088] Among them, 10 - cover plate, 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 ring part, 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 part, 312 - second annular base, 313 - second cavity, 314 - annular pit part, 315 - first external thread, 316 - second inner side surface, 331 - fourteenth annular pit, 53 - fifth groove, 531 - fifth hole, 532 - fifth side wall, 533 - fifth annular pit, 5321 - third inner side surface, 41 - annular snap ring, 63 - sixth groove, 631 - sixth hole, 632 - sixth side wall, 633 - sixth annular pit, 61 - concave ring part, 611 - first edge surface, 6321 - fourth inner side surface, 73 - seventh groove, 731 - seventh hole, 732 - seventh side wall, 733 - seventh annular pit, 71 - movable part, 711 - second edge surface, 7321 - fifth inner side surface, 83 - eighth groove, 831 - eighth hole, 832 - eighth side wall, 833 - eighth annular pit, 834 - second internal thread, 81 - hollow screw part, 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 side surface, 914 - ninth inner side surface, 102 - tenth groove, 1021 - tenth hole, 1022 - tenth side wall, 101 - first hollow structure, 1011 - protruding part, 1012 - bent part, 10111 - first end, 10112 - second end, 10121 - eleventh annular pit, 1013 - tenth inner side surface, 122 - twelfth groove, 121 - second hollow structure, 1211 - cavity part, 1212 - annular part, 1221 - twelfth hole, 1222 - twelfth side wall, 1223 - twelfth annular pit, 12111 - third external thread, 12221 - third internal thread, 132 - thirteenth groove, 1321 - thirteenth hole, 1322 - thirteenth side wall, 1323 - thirteenth annular pit, 1314 - third hollow structure, 1311 - first ring part, 1312 - welding part, 1313 - second ring part, 13131 - sixth inner side surface. Detailed implementation manners

[0089] Next, the technical solutions in the present application will be clearly and completely described in conjunction with the accompanying drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0090] It should be noted that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, and thirteenth in the present application are only used to distinguish different structural parts in the present application, and have no other special meanings, and should not limit the protection scope of the present application.

[0091] In combination with the accompanying drawings in the present application, the present application provides a battery cover plate, including:

[0092] A detection component 11 for detecting the temperature and pressure of the battery body 14, a fixing structure 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 plate 10 for connecting the battery body 14, and a preset groove opened on the cover plate 10, and a preset hole is opened on the preset groove, and the detection component 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 air leakage of the battery body 14 and prevent external air from entering the battery body 14, and can improve the airtightness of the battery body 14. It should be noted that the battery cover plate may further include: a positive electrode 17 and a negative electrode 16.

[0093] By adopting the above battery cover plate, the temperature and pressure of the battery body 14 can be detected.

[0094] Preferably, one or more first limiting protrusions are provided on the inner side surface of the fixing structure, 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 in a mortise and tenon manner, and the first limiting protrusions correspond to the first limiting grooves one by one; or

[0095] 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 in a mortise and tenon manner, and the second limiting protrusions correspond to the second limiting grooves one by one. Optionally, the first outer side surface 112 of the detection component 11 may be: the curved surface of the detection component 11 facing the outside.

[0096] Preferably, the preset groove on the cover plate 10 where the preset hole is opened includes: the liquid injection port of the battery.

[0097] Preferably, the shape of the detection component 11 may include, but is not limited to: a cylinder or a frustum of a cone.

[0098] Preferably, the first outer side surface 112 of the detection component 11 is connected to the inner side surface of the fixing structure by an adhesive method.

[0099] It should be noted that the inner side surface of the fixing structure may be: a side surface facing the side wall of the fixing structure where the detection component 11 is placed in the fixing structure. Embodiment

[0100] Figure 1 is a schematic structural diagram of a battery cover plate provided by the present application, Figure 2 is a schematic exploded structural diagram of a battery cover plate provided, Figure 3 is a schematic structural diagram of a first annular base 21 with a detection component 11 placed thereon, Figure 4 is a schematic structural diagram of a first annular base 21 provided.

[0101] Combined with Figures 1 - 4 , a detailed description of the structure of a battery cover plate provided in the first embodiment of the present application will be given. Specifically,

[0102] The fixing structure is a first annular base 21 fixedly connecting the detection component 11; wherein, the first annular base 21 may include, but is not limited to: a circular ring 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 ring 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 provided on the circular ring portion 211; wherein, the target hole 215 may be: a hole located within 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 integral molding process.

[0103] A preset hole is opened on the preset groove, which may include: a second hole is opened on the second groove 23.

[0104] The battery cover plate in the first embodiment of the present application may include, but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a first annular base 21 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 plate 10, and a second groove 23 provided with a second hole; wherein,

[0105] The detection component 11 communicates with the battery body 14 through the target hole 215 and the second hole;

[0106] The annular sealing ring 12 is placed in the target annular recess 214, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12. Among them, the annular sealing ring 12 can be an annular sealing ring;

[0107] The chassis 212 is welded to the cover plate 10;

[0108] 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.

[0109] Preferably, the first outer side surface 112 of the detection component 11 is adhesively connected to the first inner side surface 2111 of the ring portion 211 to further prevent air leakage of the battery body 14 and maintain the airtightness of the battery body 14. Among them, the first inner side surface 2111 of the ring portion 211 can be: the curved surface facing the detection component 11 placed in the first cavity 213.

[0110] Preferably, one or more first limiting protrusions are provided on the first inner side surface 2111 of the ring 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 mortise-and-tenon connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11, where the first limiting protrusions correspond to the first limiting grooves one by one. Optionally, the first limiting groove can also be used as a channel for injecting plastic 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 ring portion 211, and one or more second limiting protrusions are provided on the first outer side surface 112 of the detection component 11. One or more second limiting grooves provided on the first inner side surface 2111 of the ring portion 211 are mortise-and-tenon connected to the second limiting protrusions provided on the first outer side surface 112 of the detection component 11, and the second limiting protrusions correspond to the second limiting grooves one by one.

[0111] The detection component 11 is also provided with a communication module that sends the detected temperature and pressure of the battery body 14 to the battery management device for judging whether the temperature and pressure are abnormal.

[0112] Among them, the battery management device is used to judge 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 give an early warning and control to cut off the connection circuit of the battery body 14.

[0113] 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 the range of the first safety threshold and whether the air pressure is within the range of the second safety threshold;

[0114] If the temperature is not within the range of 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 main body 14 is controlled to be cut off by a bypass method; or,

[0115] If the air pressure is not within the range of the second safety threshold, it is determined that the air pressure is abnormal, a second alarm message is output and the connection circuit of the battery main body 14 is controlled to be cut off by a bypass method;

[0116] The battery management device is further specifically configured to: flash-display and / or highlight-display in real time the temperature and air pressure of the abnormal battery main body 14, and emit an alarm sound indicating that the battery main body 14 is abnormal.

[0117] Regarding the step of fixing the detection component 11 in the first embodiment, it may include but is not limited to:

[0118] 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; then the edge part of the chassis 212 is welded and connected to the cover plate 10. Embodiment

[0119] Figure 5 is a schematic structural diagram of another battery cover plate provided by the present application, Figure 6 is a schematic exploded structural diagram of another battery cover plate provided, Figure 7 is a schematic cross-sectional structural diagram of another battery cover plate provided.

[0120] Combined with Figures 5 - 7 , the structure of another battery cover plate provided in the second embodiment is elaborated in detail. Specifically,

[0121] The fixing structure is an annular component 15 for fixing the detection component 11; the fifth bottom surface 152 of the annular component 15 is abutted against the second bottom surface 113 of the detection component 11 to fix the detection component 11; the annular component 15 can be a ring with a hollow center, where the fifth bottom surface 152 can be a bottom surface of the annular component 15.

[0122] 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 surface 151 of the annular member 15 is welded to the first side wall 134 of the first groove 13; wherein, the first groove 13 may be a groove formed in the cover plate 10, the first hole 131 may be: a hole formed in the first groove 13, the first side wall 134 may be: the side wall formed after the first groove 13 is processed by a stamping process, and the first annular pit 133 may be: an annular pit formed in the first groove 13; that is, the battery cover plate 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, an annular member 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 plate 10, and a first groove 13 for placing the annular member 15; wherein, the first groove 13 may be formed by the cover plate 10 based on a stamping process; wherein, the annular member 15 includes: a member in the shape of a three-dimensional ring; the second outer surface 151 may be: a side surface on the side opposite to the center position of the ring of the annular member 15.

[0123] 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 elaborated here.

[0124] A preset hole is formed in the preset groove, including: a first hole 131 is formed in the first groove 13, wherein, the detection component 11 communicates with the battery body 14 through the first hole 131.

[0125] Preferably, the first outer surface 112 of the detection component 11 is connected to the inner surface of the annular member 15 by gluing or bonding, and the inner surface of the annular member 15 may be: a side surface facing the center position of the annular member 15.

[0126] Preferably, one or more first limiting protrusions are provided on the inner surface of the first side wall 134, one or more first limiting grooves are provided on the first outer surface 112 of the detection component 11, and the first limiting protrusions are connected to the first limiting grooves provided on the first outer surface 112 of the detection component 11 in a mortise and tenon connection, wherein, the first limiting protrusions and the limiting grooves correspond to each other one by one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be exchanged with each other, that is, one or more second limiting grooves are provided on the inner surface of the first side wall 134, and correspondingly, one or more second limiting protrusions are provided on the first outer surface 112 of the detection component 11, and the second limiting grooves are connected to the second limiting protrusions in a mortise and tenon connection. Wherein, the inner surface of the first side wall 134 may be: a side surface facing the first side wall 134 of the detection component 11 placed in the first groove 13.

[0127] Regarding the step of fixing the detection component 11 in the second embodiment, it may include but is not limited to:

[0128] Place the annular sealing ring 12 in the first annular pit 133, and connect the first bottom surface 111 of the detection component 11 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 be used to fix the annular component 15. Embodiment

[0129] Figure 8 is an exploded structural schematic diagram of another battery cover provided by the present application, Figure 9 is a schematic diagram of the cross-sectional structure of another battery cover provided.

[0130] Combined with Figures 8 - 9 , the structure of another battery cover provided in the third embodiment of the present application will be elaborated in detail. Specifically,

[0131] The preset groove may include: the fourth groove 43;

[0132] 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 side wall 310, a hole portion 311, a second annular base 312, a second cavity 313, an annular pit portion 314, and a first external thread 315;

[0133] Among them, the second cavity 313 may 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 central position 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: the 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 may be: one side 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 air leakage of the battery body 14 and also facilitate 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.

[0134] In addition, the hollow nut 33 may include, but is not limited to: a nut with a hollow center position; the hollow nut 33 may include, but is not limited to: a cavity for placing the hollow screw 31, and the cavity of the hollow nut 33 may be formed by enclosing a curved side wall and a third bottom surface 333. The first internal thread 332 may be: a thread on the curved side wall facing the cavity of the hollow nut 33.

[0135] The battery cover plate in the third embodiment may include, but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery main 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 plate 10, and a fourth groove 43; wherein, the second annular base 312 and the cover plate 10 are connected by welding to prevent air leakage of the battery main body 14, and 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; it should be noted that the second annular base 312 and the cover plate 10 are connected by welding to prevent air leakage of the battery main body 14, and it is also convenient for the second annular base 312 at the lower part of the hollow screw 31 to be easily welded to the cover plate 10.

[0136] The annular sealing ring 12 is placed in the annular recessed portion 314, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12. Among them, the annular recessed portion 314 is: an annular recess formed on the hollow screw 31.

[0137] The second annular base 312 and the cover plate 10 are welded and connected, which can realize the welding of the second annular base 312 to the cover plate 10.

[0138] 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.

[0139] The annular sealing ring 12 is placed in the annular recessed portion 314, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12; a preset hole is provided on the preset groove, which may include: a fourth hole is provided on the fourth groove 43; the detection component 11 is communicated with the battery main body 14 through the fourth hole and the hole portion 311;

[0140] Preferably, the first outer side surface 112 of the detection component 11 and the second inner side surface 316 of the second side wall 310 of the hollow screw 31 are adhesively connected or bonded. The second inner side surface 316 of the second side wall 310 faces the second cavity 313, and 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 central position of the second cavity 313).

[0141] 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 mortise-and-tenon connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11, wherein the first limiting protrusions and the first limiting grooves correspond to each other 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 mortise-and-tenon connected to the second limiting protrusions.

[0142] Preferably, the hollow nut 33 may further include a fourteenth annular pit 331. Among them, 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. Among them, the preset sealing ring 92 is a kind of annular sealing ring, and the fourteenth annular pit 331 is: an annular pit formed on the hollow nut 33.

[0143] Regarding the step of fixing the detection component 11 in Embodiment 3, it may include but is not limited to:

[0144] Place the annular sealing ring 12 in the annular pit portion 314, 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 second cavity 313 of the hollow screw 31; after screwing the hollow nut 33 with the first external thread 315 and the first internal thread 332 of the hollow screw 31, make the third bottom surface 333 of the hollow nut 33 abut against the second bottom surface 113 of the detection component 11 to fix the above-mentioned detection component 11; weld and connect the second annular base 312 and the cover plate 10 to further maintain the airtightness of the battery body 14 and also for fixing the hollow screw 31. Embodiment

[0145] Figure 10 is an exploded structural schematic diagram of another battery cover plate provided by the present application, Figure 11 is a schematic diagram of the cross-sectional structure of another battery cover plate provided.

[0146] Combined with Figures 10 - 11 , the structure of another battery cover plate provided in Embodiment 4 of the present application is elaborated in detail. Specifically,

[0147] 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 formed in the preset groove, which may include: a fifth hole 531 is formed in the fifth groove 53; the detection component 11 communicates with the battery body 14 through the fifth hole 531; wherein, the fifth groove 53 is a groove formed in the cover plate 10, the fifth hole 531 may be a hole formed in the fifth groove 53, the fifth side wall 532 may be the 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 snap ring; the snap ring may include but is not limited to: an annular snap ring 41 with an annular shape or a polygonal snap ring with a polygonal shape; wherein, the polygonal snap ring with a polygonal shape may include but is not limited to any one of the following: a polygonal snap ring with a regular hexagon shape or a polygonal snap ring with a pentagon shape.

[0148] When the aforementioned snap ring is the annular snap ring 41, the battery cover plate in the 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 snap ring 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 plate 10, and a fifth groove 53.

[0149] Wherein, 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 surface of the annular snap ring 41 is elastically connected to the fifth side wall 532, and the sixth bottom surface of the annular snap ring 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, wherein, the sixth bottom surface is: a bottom surface of the annular snap ring 41 facing the detection component 11 placed in the fifth groove 53.

[0150] 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 by gluing or bonding.

[0151] Preferably, one or more first limiting protrusions are provided on the third inner surface 5321 of the fifth side wall 532, and one or more first limiting grooves are provided on the first outer surface 112 of the detection component 11. The first limiting protrusions and the first limiting grooves provided on the first outer surface 112 of the detection component 11 are connected in a mortise and tenon manner, wherein the first limiting protrusions and the first limiting grooves correspond to each other 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 third inner surface 5321 of the fifth side wall 532, and correspondingly, one or more second limiting protrusions are provided on the first outer surface 112 of the detection component 11, and the second limiting grooves and the second limiting protrusions are connected in a mortise and tenon manner. Among them, the third inner surface 5321 can be: a side surface of the fifth side wall 532 facing the detection component 11 placed in the fifth groove 53.

[0152] Regarding the step of fixing the detection component 11 in Embodiment 4, it may include but is not limited to:

[0153] Place the annular sealing ring 12 in the fifth annular pit 533 of the fifth groove 53 after stamping; place the detection component 11 in the fifth groove 53; and then place the annular snap ring 41 so that the side surface of the annular snap ring 41 is elastically connected to the fifth side wall 532, and the sixth bottom surface of the annular snap ring 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. Embodiment

[0154] Figure 12 is a schematic cross-sectional structure diagram of another battery cover plate provided by the present application.

[0155] Combined with Figure 12 , the structure of another battery cover plate provided in this Embodiment 5 is elaborated in detail. Specifically,

[0156] 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 communicates with the battery body 14 through the sixth hole 631; a preset hole is provided on the preset groove, which may include: a sixth hole 631 is provided on the sixth groove 63; among them, the sixth groove 63 can be a groove provided on the cover plate 10, the sixth hole 631 can be a hole provided on the sixth groove 63, the sixth side wall 632 can be: a side wall formed by stamping the sixth groove 63, and the sixth annular pit 633 can be: an annular pit formed on the sixth groove 63.

[0157] The fixing structure includes: a concave ring portion 61, and the concave ring portion 61 is formed by stamping the sixth side wall 632;

[0158] The battery cover plate in the fifth embodiment may include, but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a concave ring portion 61 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 plate 10, and a sixth groove 63 for placing the detection component 11; wherein,

[0159] The annular sealing ring 12 is placed in the sixth annular pit 633, and the first bottom surface 111 of the detection component 11 is connected to the upper surface of the annular sealing ring 12;

[0160] 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 may be: a curved surface on the side of the concave ring portion 61 facing the second bottom surface 113.

[0161] Preferably, the first outer side surface 112 of the detection component 11 and the fourth inner side surface 6321 of the sixth side wall 632 of the sixth groove 63 are adhesively connected or bonded. Wherein, the fourth inner side surface 6321 may be: a side surface of the sixth side wall 632 facing the detection component 11 placed in the sixth groove 63;

[0162] Preferably, one or more first limiting protrusions are provided on the fourth inner side surface 6321 of the sixth side wall 632, 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 mortise-and-tenon connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11, wherein the first limiting protrusions and the first limiting grooves correspond 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 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 mortise-and-tenon connected to the second limiting protrusions.

[0163] Regarding the fifth embodiment, the steps for fixing the detection component 11 may include, but are not limited to:

[0164] Placing the annular sealing ring 12 in the sixth annular pit 633 of the sixth groove 63 after stamping; placing the detection component 11 in the sixth groove 63; forming the concave ring portion 61 by stamping the sixth side wall 632; and abutting 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. Embodiment

[0165] Figure 13It is a schematic cross-sectional structure diagram of another battery cover plate provided by the present application.

[0166] Combined with Figure 13 , the structure of another battery cover plate provided in the sixth embodiment will be elaborated in detail. Specifically,

[0167] The preset groove includes: a seventh groove 73, and the seventh groove 73 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 communicates with the battery body 14 through the seventh hole 731; a preset hole is opened on the preset groove, and it may include: the 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: an annular pit formed on the seventh side wall 732.

[0168] The fixing structure includes: a plurality of movable parts 71; the movable parts 71 are formed by stamping the seventh side wall 732; the movable parts 71 can be bent movably, so that the second edge surface 711 of the movable parts 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 may be: a curved surface on the side of the movable part 71 facing the second bottom surface 113.

[0169] The battery cover plate in the sixth embodiment may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a plurality of movable parts 71 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 plate 10, and a seventh groove 73 for placing the detection component 11; wherein,

[0170] 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;

[0171] 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.

[0172] Preferably, the first outer side surface 112 of the detection component 11 and the fifth inner side surface 7321 of the seventh side wall 732 of the seventh groove 73 are adhesively connected or bonded. Among them, the fifth inner side surface 7321 is: a side surface of the seventh side wall 732 facing the detection component 11 placed in the seventh groove 73.

[0173] Preferably, one or more first limiting protrusions are provided on the fifth inner surface 7321 of the seventh side wall 732, and one or more first limiting grooves are provided on the first outer surface 112 of the detection component 11. The first limiting protrusions and the first limiting grooves provided on the first outer surface 112 of the detection component 11 are connected in a mortise and tenon manner, wherein the first limiting protrusions and the first limiting grooves correspond to each other one by one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be exchanged with each other, that is, one or more second limiting grooves are provided on the fifth inner surface 7321 of the seventh side wall 732, and correspondingly, one or more second limiting protrusions are provided on the first outer surface 112 of the detection component 11.

[0174] Regarding Embodiment 6, the installation steps of the detection component 11 may include but are not limited to:

[0175] Place the annular sealing ring 12 in the seventh annular pit 733 formed by machining with a machine tool.

[0176] Place the detection component 11 in the seventh groove 73 after the cover plate 10 is stamped; after the cover plate 10 is stamped to form a plurality of movable parts 71, then bend the movable parts 71 so that the second edge surface 711 of the movable parts 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. Embodiment

[0177] Figure 14 is an exploded structural schematic diagram of another battery cover plate provided by the present application. Figure 15 is a schematic cross-sectional structure diagram of another battery cover plate provided.

[0178] Combined with Figures 14 - 15 , the structure of another battery cover plate provided in Embodiment 7 is elaborated in detail. Specifically,

[0179] The preset groove includes: an eighth groove 83. Among them, 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, a second internal thread 834 is machined on the inner surface of the eighth side wall 832; the detection component 11 communicates with the battery body 14 through the eighth hole 831; a preset hole is provided on the preset groove, which may include: an eighth hole 831 is provided on the eighth groove 83; among them, the eighth groove 83 may be: a groove provided on the cover plate 10, the eighth hole 831 may be a hole provided on the eighth groove 83, and the eighth side wall 832 may be the side wall formed by stamping the eighth groove 83.

[0180] The inner side surface of the eighth side wall 832 can be: one 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 is: the thread on the inner side surface of the eighth side wall 832;

[0181] The fixing structure includes: a hollow screw part 81, and a second external thread 811 is machined on the outer side surface of the hollow screw part 81; the hollow screw part 81 can include: an annular part with a hollow center position of the part,

[0182] Wherein, the outer side surface of the hollow screw part 81 is: one curved surface of the side wall of the hollow screw part 81 facing away from the center position of the hollow screw part 81.

[0183] The battery cover plate in the seventh embodiment can include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery main body 14, a hollow screw part 81 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 plate 10, and an eighth groove 83 for placing the detection component 11; wherein,

[0184] The annular sealing ring 12 is placed in the eighth annular pit 833, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12;

[0185] The hollow screw part 81 is screwed with 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 part 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 part 81 can be one side surface of the hollow screw part 81 facing the second bottom surface 113 of the detection component 11 placed in the eighth groove 83.

[0186] 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 adhesively connected or bonded.

[0187] Preferably, one or more first limiting protrusions are provided on the inner side surface of the eighth side wall 832, 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 mortise-tenon connected with the first limiting grooves provided on the first outer side surface 112 of the detection component 11, wherein the first limiting protrusions and the first limiting grooves correspond one by one. Optionally, the positions of the limiting protrusions and the positions of the limiting grooves can be exchanged with each other, 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 mortise-tenon connected with the second limiting protrusions.

[0188] In Embodiment 7, the installation steps of the detection component 11 and the hollow screw part 81 may include, but are not limited to:

[0189] The annular sealing ring 12 is placed in the eighth annular pit 833, 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 part 81 is installed, and is screwed through the second external thread 811 and the second internal thread 834 on the eighth side wall 832, so that the fourth bottom surface 812 of the hollow screw part 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. Embodiment

[0190] Figure 16 is another exploded structure schematic diagram of the battery cover plate provided by the present application, Figure 17 is a schematic diagram of the cross-sectional structure of another battery cover plate provided.

[0191] Combined with Figures 16 - 17 , the structure of another battery cover plate provided in Embodiment 8 of the present application will be elaborated in detail. Specifically,

[0192] The preset groove includes: the ninth groove 93, and the ninth groove 93 may include, but is not limited to: the ninth hole 931, the ninth side wall 932; a preset hole is opened on the preset groove, including: the ninth hole 931 is opened on the ninth groove 93; the detection component 11 communicates with the battery main 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: the side wall formed by stamping the ninth groove 93.

[0193] The fixing structure includes: a hollow aluminum tube 91, and the hollow aluminum tube 91 is: formed by stamping the head and tail ports of an aluminum tube with a hollow center and a circular cross-section; the hollow aluminum tube 91 includes: the ninth annular pit 911 and the 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: an annular pit formed on the first end 10111 of the hollow aluminum tube 91, and the tenth annular pit 912 is: an annular pit formed on the second end 10112 of the hollow aluminum tube 91; the ninth outer side surface 913 is: the curved surface on one side of the side wall of the hollow aluminum tube 91 facing away from the center of the aluminum tube, the ninth annular pit 911 may be an annular pit with an annular shape, and the tenth annular pit 912 may be an annular pit with an annular shape.

[0194] The battery cover plate in the eighth 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 aluminum tube 91 for fixing the detection component 11, an annular sealing ring 12 connected to the first bottom surface 111 of the detection component 11, and a preset sealing ring 92 connected to the second bottom surface 113 of the detection component 11, a cover plate 10, and a ninth groove 93 for placing the hollow aluminum tube 91; wherein,

[0195] The annular sealing ring 12 is placed in the ninth annular pit 911, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12;

[0196] The preset sealing ring 92 is placed in the tenth annular pit 912, 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 can be a sealing ring in a ring shape;

[0197] 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.

[0198] Preferably, the first outer side surface 112 of the detection component 11 and the ninth inner side surface 914 of the hollow aluminum tube 91 are adhesively connected or bonded, and the ninth inner side surface 914 is: one curved surface of the side wall of the hollow aluminum tube 91 facing the center position of the aluminum tube.

[0199] 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 mortise-and-tenon connected with the first limiting grooves provided on the first outer side surface 112 of the detection component 11, wherein the first limiting protrusions and the first limiting grooves correspond to each other one by one. Optionally, the positions of the limiting protrusions and the limiting grooves can be exchanged with each other, 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 mortise-and-tenon connected with the second limiting protrusions.

[0200] Regarding the eighth embodiment, the installation steps of the detection component 11 and the hollow aluminum tube 91 may include, but are not limited to:

[0201] Place the annular sealing ring 12 in the ninth annular pit 911; place the detection component 11 in the hollow aluminum tube 91, and connect the first bottom surface 111 of the detection component 11 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 in contact with the detection component 11 to fix the detection component 11, further improving the airtightness of the battery body 14; place the hollow aluminum tube 91 in the ninth groove 93, and connect the ninth outer side surface 913 of the hollow aluminum tube 91 to the ninth side wall 932 by welding, which facilitates fixing the hollow aluminum tube 91 on the ninth side wall 932. Embodiment

[0202] Figure 18 is another exploded structural schematic diagram of the battery cover plate provided by the present application. Figure 19 is a schematic diagram of the cross-sectional structure of another battery cover plate provided.

[0203] Combined with Figures 18 - 19 , the structure of another battery cover plate provided in Embodiment Nine of the present application will be elaborated in detail. Specifically,

[0204] The preset groove includes: the tenth groove 102, and the tenth groove 102 includes: the tenth hole 1021 and the tenth side wall 1022; a preset hole is opened on the preset groove, including: the tenth hole 1021 is opened on the tenth groove 102; the detection component 11 communicates with 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 the side wall formed by the tenth groove 102 through a stamping process.

[0205] The fixing structure includes: the first hollow structure 101, and the first hollow structure 101 includes: a convex 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: an annular pit formed on the bent portion 1012.

[0206] The battery cover plate in Embodiment Nine may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a first hollow structure 101 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 plate 10, and a tenth groove 102 for placing the detection component 11; wherein,

[0207] The annular sealing ring 12 is placed in the eleventh annular recess 10121, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12. The first end portion 10111 of the convex portion 1011 abuts against the second bottom surface 113 of the detection component 11 to fixedly place the detection component 11 in the tenth groove 102, and the second end portion 10112 of the convex portion 1011 is welded to the tenth side wall 1022.

[0208] 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 adhesively connected or bonded.

[0209] 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. The first limiting protrusions are mortise-tenon connected to the first limiting grooves provided on the first outer side surface 112 of the detection component 11, wherein the first limiting protrusions and the first limiting grooves correspond one by one. Optionally, the positions of the limiting protrusions and the limiting grooves 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. The second limiting grooves are mortise-tenon connected to the second limiting protrusions. Wherein, the tenth inner side surface 1013 is the side surface of the tenth side wall 1022 facing the detection component 11 placed in the tenth groove 102;

[0210] Regarding Embodiment Nine, the installation steps of the detection component 11 and the first hollow structure 101 may include but are not limited to:

[0211] Place the detection component 11 in the first hollow structure 101; place the annular sealing ring 12 in the eleventh annular recess 10121; bend the bent 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 portion 10111 of the convex portion 1011 abuts against the second bottom surface 113 of the detection component 11 to fixedly place the detection component 11 in the tenth groove 102; place the first hollow structure 101 in the tenth groove 102, and weld the second end portion 10112 of the convex portion 1011 to the tenth side wall 1022. Embodiment

[0212] Figure 20 is an exploded structure schematic diagram of another battery cover plate provided by the present application, Figure 21 is a schematic diagram of the cross-sectional structure of another battery cover plate provided.

[0213] Combined with Figures 20 - 21, a structure of another battery cover plate provided in Embodiment 10 will be elaborated in detail. Specifically,

[0214] 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. Among them, a third internal thread 12221 is machined on the twelfth side wall 1222 by a machine tool; a preset hole is provided on the preset groove, including: a twelfth hole 1221 is provided on the twelfth groove 122; the detection component 11 communicates with the battery body 14 through the twelfth hole 1221; among them, 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 the twelfth groove 122; the twelfth annular pit 1223 is: an annular pit formed on the twelfth groove 122.

[0215] The fixing structure includes: a second hollow structure 121, and the second hollow structure 121 may include but is not limited to: an annular part 1212 and a cavity part 1211. Among them, a third external thread 12111 is machined on the outer side surface of the cavity part 1211;

[0216] The battery cover plate in Embodiment 10 may include but is not limited to: a detection component 11 for detecting the temperature and pressure of the battery body 14, a second hollow structure 121 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 plate 10, and a twelfth groove 122 for placing the detection component 11; among them, the outer side surface of the cavity part 1211 is: the side wall with a curved shape in the cavity part 1211 facing away from the side of the detection component 11 placed in the cavity part 1211;

[0217] The annular sealing ring 12 is placed in the twelfth annular pit 1223, and the first bottom surface 111 of the detection component 11 is connected to the annular sealing ring 12;

[0218] The second hollow structure 121 is screwed with the third internal thread 12221 on the twelfth side wall 1222 through the third external thread 12111, so that the annular part 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.

[0219] Preferably, the first outer side surface 112 of the detection component 11 and the inner side surface of the cavity part 1211 of the second hollow structure 121 are adhesively connected or bonded. The inner side surface of the cavity part 1211 is: the side wall with a curved shape in the cavity part 1211 facing the side of the detection component 11 placed in the cavity part 1211.

[0220] 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 protrusions are mortise-tenon connected to the limiting grooves provided on the first outer side surface 112 of the detection component 11, wherein the first limiting protrusions and the first limiting grooves correspond to each other one by one. Optionally, the positions of the limiting protrusions and the limiting grooves can be exchanged with each other, 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. The second limiting grooves are mortise-tenon connected to the second limiting protrusions; wherein, the inner side surface of the twelfth side wall 1222 is: the side surface of the twelfth side wall 1222 facing the detection component 11 in the twelfth groove 122.

[0221] Regarding Embodiment Ten, the installation steps of the detection component 11 and the second hollow structure 121 may include but are not limited to:

[0222] 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, and 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 to fix the detection component 11 placed in the twelfth groove 122.

[0223] Embodiment Eleven:

[0224] Figure 22 It is an exploded structural schematic diagram of another battery cover plate provided by the present application, Figure 23 It is a schematic diagram of the cross-sectional structure of another battery cover plate provided.

[0225] Combined with Figures 22 - 23 , a detailed description is given of the structure of another battery cover plate provided in Embodiment Eleven. Specifically,

[0226] The preset groove includes: the thirteenth groove 132, and the thirteenth groove 132 may include but is not limited to: the thirteenth hole 1321, the thirteenth side wall 1322, and the thirteenth annular pit 1323; a preset hole is formed in the preset groove, including: the thirteenth hole 1321 is formed in the thirteenth groove 132; the detection component 11 communicates with the battery body 14 through the thirteenth hole 1321; wherein, the thirteenth groove 132 may be a groove formed in the cover plate 10, and the thirteenth hole 1321 may be a hole formed in the thirteenth groove 132; the thirteenth side wall 1322 may be the side wall formed by stamping the thirteenth groove 132; the thirteenth annular pit 1323 may be an annular pit formed in the thirteenth groove 132.

[0227] The detection component 11 is in the shape of a cylinder.

[0228] The fixing structure includes: the third hollow structure 1314, and the third hollow structure 1314 may include but is not limited to: the first ring portion 1311, the welding portion 1312, and the second ring portion 1313.

[0229] The battery cover plate in the eleventh embodiment may include but is not limited to: the detection component 11 for detecting the temperature and pressure of the battery body 14, the third hollow structure 1314 for fixing the detection component 11, the annular sealing ring 12 connected to the first bottom surface 111 of the detection component 11, the cover plate 10, and the thirteenth groove 132 for placing the detection component 11; wherein,

[0230] 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 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.

[0231] 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 adhesively connected or bonded.

[0232] 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 assembly 11. The first limiting protrusions are mortise-and-tenon connected to the first limiting grooves provided on the first outer side surface 112 of the detection assembly 11, wherein the first limiting protrusions and the first limiting grooves correspond to each other one by one. Optionally, the positions of the first limiting protrusions and the first limiting grooves can be exchanged with each other, 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 assembly 11. The second limiting grooves are mortise-and-tenon connected to the second limiting protrusions; wherein, the sixth inner side surface 13131 can be: a curved surface on one side of the second ring portion 1313 facing the detection assembly 11 placed in the thirteenth groove 132.

[0233] Regarding the installation steps of the detection assembly 11 and the third hollow structure 1314 in Embodiment XI, they may include but are not limited to:

[0234] Place the annular sealing ring 12 in the thirteenth annular pit 1323; place the detection assembly 11 in the thirteenth groove 132 so that the first bottom surface 111 of the detection assembly 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 assembly 11, and the second ring portion 1313 abuts against the first outer side surface 112 of the detection assembly 11 to jointly fix the detection assembly 11 placed in the thirteenth groove 132, and the welding portion 1312 is welded to the cover plate 10.

[0235] It should be noted that the first limiting groove in the present application can also be used as a channel for injecting plastic glue.

[0236] Figures 1 - 23 It is only used to illustrate the present application and should not limit the protection scope of the present application.

[0237] The above are only optional embodiments of the present application, and do not limit the patent scope of the present application. All equivalent structural transformations made under the application concept of the present application using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery cover plate, characterized in that, Comprising: A detection component (11) for detecting the temperature and pressure of the battery body (14), a fixing structure 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 plate (10) for connecting the battery body (14), and a preset groove opened on the cover plate (10), a preset hole is opened on the preset groove, and the detection component (11) communicates with the battery body (14) through the preset hole; The annular sealing ring (12) is also connected to the fixing structure; The preset groove with a preset hole opened on the cover plate (10) includes: a liquid injection port of the battery; The preset groove includes: a ninth groove (93), the ninth groove (93) includes: a ninth hole (931), 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) communicates with the battery body (14) through the ninth hole (931); wherein, the ninth groove (93) includes: a groove opened on the cover plate (10), the ninth hole (931) includes: a hole opened on the ninth groove (93), and the ninth side wall (932) includes: a side wall formed by stamping the ninth groove (93); The fixing structure includes: a hollow aluminum tube (91), the hollow aluminum tube (91) is formed by stamping the head and tail ports 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 surface (913) of the hollow aluminum tube (91) is welded to the ninth side wall (932); the ninth outer surface (913) includes: 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 annular sealing ring (12) is placed in the ninth annular pit (911), and the first bottom surface (111) of the detection component (11) is connected to the annular sealing ring (12); A preset sealing ring (92) is also placed in the tenth annular pit (912), 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; 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 in contact with the detection component (11) to fix the detection component (11).

2. The battery cover plate according to claim 1, wherein The shape of the detection component (11) includes: a cylinder or a frustum of a cone.

3. The battery cover plate according to claim 1, wherein One or more first limiting protrusions are arranged on the inner side surface of the fixing structure, and one or more first limiting grooves are arranged on the first outer side surface (112) of the detection component (11). The first limiting protrusions are connected with the first limiting grooves in a mortise-and-tenon manner, and the first limiting protrusions correspond to the first limiting grooves one by one; or, One or more second limiting grooves are arranged on the inner side surface of the fixing structure, and one or more second limiting protrusions are arranged on the first outer side surface (112) of the detection component (11). The second limiting protrusions are connected with the second limiting grooves in a mortise-and-tenon manner, and the second limiting protrusions correspond to the second limiting grooves one by one.

4. The battery cover plate according to claim 1, wherein, The first outer side surface (112) of the detection component (11) is connected with the inner side surface of the fixing structure by an adhesive method.

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