Lithium battery shell
Technical Field
The invention relates to a lithium battery shell.
Background
The lithium battery refers to a battery containing lithium in an electrochemical system, and comprises metal lithium, lithium alloy, lithium ions and lithium polymers, and the technology of the lithium battery is continuously technically innovated along with the explosive development of smart phones and tablet computers. Compared with the traditional lead storage battery, the lithium battery has the advantages of small volume, light weight, small environmental pollution and the like, and the lithium battery can gradually replace the lead storage battery to become the mainstream in the industries of electric vehicles, UPS (uninterrupted power supply) and energy storage power stations.
General lithium cell is when using in electronic, all need adorn in lithium cell casing, and rethread lithium cell casing sets up on the electric motor car, and general lithium cell casing passes through the conch wall and the cap fixes the lithium cell in lithium cell casing, but such fixed mode can let the lithium cell lead to the fact certain impact to the shell lid in vibrations process, influences the connection fastening nature of its cap.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a lithium battery case that does not need to fix a lithium battery through a case cover is provided.
In order to solve the problems, the invention comprises a shell body and a shell cover, wherein the shell body is a hollow cuboid, one end of the cuboid in the length direction is provided with an opening, two opposite side walls of the cuboid are provided with a pair of self-locking devices, each self-locking device comprises a self-locking plate, a transmission rod and a limiting rod, the self-locking plates are hinged on the side walls of the shell body, each self-locking plate comprises a limiting plate and a buckling plate, the plane of each limiting plate is perpendicular to the plane of each buckling plate, the 90-degree included angle between each limiting plate and each buckling plate faces to the direction in which the opening is formed in the shell body, one side of each limiting plate is fixedly connected with one side of each buckling plate, the joint of each limiting plate and each buckling plate is superposed with the hinge joint of each self-locking plate and the shell body, each limiting plate is positioned on the inner side of the shell, the transmission rod is arranged on the side wall of the shell body in a sliding mode, the transmission rod and the self-locking plate are located on the same side wall of the shell body, the length direction of the transmission rod is parallel to the length direction of the shell body, the sliding direction of the transmission rod is parallel to the length direction of the transmission rod, a groove is formed in the side wall of the shell body, a spring is arranged between the transmission rod and the shell body, and when the spring is in a natural state, one end of the transmission rod protrudes out of the side wall of the groove; the other end of the transmission rod is provided with a rack, the limiting rod is arranged on the side wall of the shell body in a sliding mode, the length direction of the limiting rod is perpendicular to that of the transmission rod, the sliding direction of the limiting rod is parallel to that of the limiting rod, the rack is also arranged on the limiting rod, the rack on the transmission rod and the rack on the limiting rod are meshed and connected with the same gear, the gear is arranged on the side wall of the shell body in a rotating mode, when the buckling plate is buckled in the groove, the plane where the limiting plate is located is perpendicular to the length direction of the shell body, the spring between the transmission rod and the side wall of the shell body is in a compressed state, one end of the limiting rod protrudes into the shell body, and the limiting plate is perpendicular to the length direction of the shell body; when the spring is in a natural state, the limiting rod does not protrude into the shell body.
In order to facilitate clamping of the fastening plate, a clamping groove is formed in the vertical surface of the fastening plate corresponding to the transmission rod, a switch shifting piece is arranged on the side wall of the shell body in a sliding mode and fixedly connected with the transmission rod, when the fastening plate is fastened in the groove, the transmission rod is inserted into the clamping groove, the depth of the clamping groove is defined as a, when a spring between the transmission rod and the shell body is in a natural state, the length of one end of the transmission rod protruding out of the side wall of the groove is defined as b, and b is larger than a.
In order to facilitate the arrangement of the buckling plate and the groove, the depth of the groove is the same as the thickness of the buckling plate, and when the buckling plate is buckled in the groove, corresponding side walls between the buckling plate and the groove are flush.
In order to avoid water seepage in the shell body, the side walls of the grooves are provided with waterproof sealing strips.
In order to facilitate opening of the buckling plate, a torsion spring is arranged between the self-locking plate and the shell body, and when the torsion spring is in a natural state, the plane where the limiting plate is located is not perpendicular to the length direction of the shell body.
The invention has the beneficial effects that: the lithium battery of the invention is provided with a limiting groove matched with the limiting rod, when the lithium battery is arranged in the shell body, the bottom of the lithium battery pushes the limiting plate to rotate towards the direction far away from the opening of the shell body, the buckling plate fixedly connected with the limiting plate into a right angle rotates towards the direction close to the side wall of the shell body, when the buckling plate rotates to be close to the transmission rod, the buckling plate presses the transmission rod to slide towards the direction far away from the buckling plate, the rack at the other end of the transmission rod drives the gear to rotate, the gear drives the limiting rod to extend into the limiting groove of the lithium battery through the rack on the limiting rod, because the last limiting rod is clamped in the limiting groove, the travel distance of the lithium battery in the shell body is smaller, the influence of movement on the extending of the limiting rod into the clamping groove can be ignored, when the buckling plate is completely buckled in the groove, the, to prevent the fastening plate from being loosened. When the lithium battery is arranged in the shell body, the lithium battery can be fixed through the self-locking device, the influence of vibration of the lithium battery on fastening of a shell cover can be avoided, and the safety of the lithium battery shell is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a state after fixing a lithium battery;
FIG. 3 is an enlarged view at A;
FIG. 4 is an enlarged schematic view of the transmission rod and the limiting rod when the lithium battery is not fixed;
FIG. 5 is an enlarged schematic view of the transmission rod and the limiting rod when the lithium battery is fixed;
wherein: 1. the shell comprises a shell body, 2 parts of a self-locking plate, 3 parts of a transmission rod, 4 parts of a gear, 5 parts of a limiting rod, 6 parts of a shell cover, 7 parts of a lithium battery, 1-1 parts of a groove, 2-1 parts of a buckling plate, 2-2 parts of a limiting plate, 2-3 parts of a clamping groove, 3-1 parts of a spring.
Detailed Description
As shown in fig. 1, fig. 3 and fig. 4, lithium battery shell includes housing body 1 and cap 6, housing body 1 be hollow cuboid, the length direction's of cuboid one end be provided with the opening, two relative lateral walls of cuboid on be provided with a pair of self-lock device, self-lock device include from jam plate 2, transfer line 3 and gag lever post 5, self-lock plate 2 articulate on housing body 1's lateral wall, self-lock plate 2 include limiting plate 2-2 and buckle board 2-1, lock plate 2 and housing body 1 between be provided with the torsional spring, when the torsional spring is in natural state, the plane of limiting plate 2-2 place and housing body 1's length direction be in the non-vertical state. The plane of the limiting plate 2-2 is perpendicular to the plane of the buckling plate 2-1, the 90-degree included angle between the limiting plate 2-2 and the buckling plate 2-1 faces the direction of the opening formed in the shell body 1, one side of the limiting plate 2-2 is fixedly connected with one side of the buckling plate 2-1, the joint of the limiting plate 2-2 and the buckling plate 2-1 is superposed with the hinge joint of the self-locking plate 2 and the shell body 1, the limiting plate 2-2 is positioned on the inner side of the shell body 1, the buckling plate 2-1 is positioned on the outer side of the shell body, the transmission rod 3 is arranged on the side wall of the shell body 1 in a sliding mode, the transmission rod 3 and the self-locking plate 2 are positioned on the same side wall of the shell body 1, the length direction of the transmission rod 3 is parallel to the length direction of the shell body 1, and the sliding direction of the transmission, the side wall of the shell body 1 is provided with a groove 1-1, a spring 3-1 is arranged between the transmission rod 3 and the shell body 1, when the spring 3-1 is in a natural state, one end of the transmission rod 3 protrudes out of the side wall of the groove 1-1, a clamping groove 2-3 is arranged on the vertical surface of the buckling plate 2-1 corresponding to the transmission rod 3, a switch plectrum is arranged on the side wall of the shell body 1 in a sliding manner and is fixedly connected with the transmission rod 3, when the buckling plate 2-1 is buckled in the groove 1-1, the transmission rod 3 is inserted into the clamping groove 2-3, the depth of the clamping groove 2-3 is defined as a, when the spring 3-1 between the transmission rod 3 and the shell body 1 is in a natural state, the length of one end of the transmission rod 3 protruding out of the side wall of the groove 1-1 is defined as b, b is greater than a. The depth of the groove 1-1 is the same as the thickness of the buckling plate 2-1, when the buckling plate 2-1 is buckled in the groove 1-1, corresponding side walls between the buckling plate 2-1 and the groove 1-1 are flush, and the side walls of the buckling plate 2-1 and the side walls of the groove 1-1 are tightly attached together. The side walls of the grooves 1-1 are provided with waterproof sealing strips to prevent water from seeping into the shell body 1. The other end of the transmission rod 3 is provided with a rack, the limiting rod 5 is arranged on the side wall of the shell body 1 in a sliding way, the length direction of the limiting rod 5 is vertical to the length direction of the transmission rod 3, the sliding direction of the limiting rod 5 is parallel to the length direction of the limiting rod 5, the limiting rod 5 is also provided with a rack, the rack on the transmission rod 3 and the rack on the limiting rod 5 are both meshed and connected with the same gear 4, the gear 4 is rotationally arranged on the side wall of the shell body 1, when the buckling plate 2-1 is buckled in the groove 1-1, the plane of the limiting plate 2-2 is vertical to the length direction of the shell body 1, the spring 3-1 between the driving rod 3 and the side wall of the shell body 1 is in a compressed state, one end of the limiting rod 5 protrudes into the shell body, and the limiting plate 2-2 is vertical to the length direction of the shell body 1; when the spring 3-1 is in a natural state, the limiting rod 5 does not protrude into the shell body 1.
The working principle is as follows: as shown in fig. 2 and 5, the lithium battery 7 is provided with a limit groove matching with the limit rod 5, when the lithium battery 7 is loaded into the housing body 1, the bottom of the lithium battery 7 pushes the limit plate 2-2 to rotate in a direction away from the opening of the housing body 1, the fastening plate 2-1 fixedly connected with the limit plate 2-2 into a right angle rotates in a direction close to the side wall of the housing body 1, when the fastening plate 2-1 rotates to be close to the transmission rod 3, the fastening plate 2-1 presses the transmission rod 3 to slide in a direction away from the fastening plate 2-1, the rack driving gear 4 at the other end of the transmission rod 3 rotates, the gear 4 drives the limit rod 5 to extend into the limit groove of the lithium battery 7 through the rack on the limit rod 5, and because the distance of the lithium battery 7 traveling in the housing body 1 is smaller in the final card-in stage, the influence of the movement on the extension of the limit rod 5, when the fastening plate 2-1 is completely fastened in the groove 1-1, the transmission rod 3 is inserted into the clamping groove 2-3 of the fastening plate 2-1 to prevent the fastening plate 2-1 from being loosened, and finally the shell cover 6 is installed on the shell body 1.
When the lithium battery 7 needs to be taken out, the transmission rod 3 is stirred through the shifting piece to slide in the direction away from the buckling plate 2-1, the transmission rod 3 drives the limiting rod 5 to exit from the limiting groove of the lithium battery 7 through the gear 4, and the torsion spring on the self-locking plate 2 drives the limiting plate 2-2 to push the lithium battery 7 to move towards the opening of the shell body 1, so that a worker can take out the lithium battery 7 conveniently.