CN212783687U

CN212783687U - Connection structure between square batteries

Info

Publication number: CN212783687U
Application number: CN202021413147.0U
Authority: CN
Inventors: 赵得强; 张龙; 王成均; 朱再立; 马旭利
Original assignee: Lanzhou Jinchuan Keliyuan Battery Co ltd
Current assignee: Lanzhou Jinchuan Keliyuan Battery Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-03-23
Anticipated expiration: 2030-07-17

Abstract

The utility model provides a connecting structure between square batteries, which comprises a sub-lock and a main lock, wherein the sub-lock comprises a welding plate, the top of the welding plate is vertically provided with a locking column, and the sub-lock is welded with a positive pole lug or a negative pole lug of a corresponding square battery together through the welding plate to form a positive pole column or a negative pole column; the primary lock comprises one or more than two prisms with polygonal cross sections, through holes are formed in the prisms, and the through holes are matched with the locking columns of the secondary lock in a sleeved and locked mode; when the prism is one, the position of the outer side surface of the prism, which is close to the top, is vertically connected with a leading-out sheet; when the prism is more than two, the connecting pieces are vertically connected between the positions, close to the tops, of the outer side faces of the two adjacent prisms, and the connecting pieces are linearly arranged. The utility model discloses simple structure, convenient to use can realize point-to-point maintenance.

Description

Connection structure between square batteries

Technical Field

The utility model relates to a connection structure between square battery.

Background

The traditional square battery pack connecting method comprises resistance welding, tin soldering and laser welding, and the novel welding method comprises aluminum wire welding. The technical means are all that the connection between the batteries is realized by a welding method, the automatic welding can be realized by laser welding and aluminum wire welding, and the resistance welding and the soldering are basically manual operation. With the development of clean energy, solar lighting is greatly popularized and applied. The solar energy is used to convert light energy into electric energy and store the electric energy, and the square lithium battery is applied to the aspect of solar energy storage due to the characteristics of small volume and large capacity. At present, solar energy storage batteries are connected by traditional methods such as resistance welding and tin soldering, the welding consistency is not high, the maintenance after welding is difficult, and the solar energy storage batteries have serious destructiveness, such as: when one battery is abnormal, the group of batteries is usually disassembled to realize maintenance. In addition, due to the existence of the welding points, the positions of the welding points are easy to damage when the connecting sheet is clamped, and the welding points are not easy to find, so that serious potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connection structure between the square battery of simple structure, convenient to use, realization point-to-point maintenance.

The utility model discloses a following scheme realizes:

a connecting structure between square batteries comprises a sub-lock and a main lock, wherein the sub-lock comprises a welding plate, the top of the welding plate is vertically provided with a locking column, and the sub-lock is welded with a positive electrode lug or a negative electrode lug of a corresponding square battery through the welding plate to form a positive electrode pole or a negative electrode pole; the primary lock comprises one or more than two prisms with polygonal cross sections, through holes are formed in the prisms, and the through holes are matched with the locking columns of the secondary lock in a sleeved and locked mode; when the prism is one, the position, close to the top, of the outer side surface of the prism is vertically connected with a leading-out piece, and a female lock and a sub-lock which are provided with the prism are sleeved and locked to realize the extreme leading-out of the square battery; when the prism is more than two, be connected with the connection piece perpendicularly between the lateral surface of two adjacent prisms is close to the top position and the connection piece is the straight line and arranges, the prism is that the female lock more than two is used for realizing the connection between the square cell with sub lock phase cover locking. Generally, the prism is formed by combining two mother locks and two son lock locks for realizing parallel connection or series connection between square batteries, and the prism is formed by combining more than three mother locks and more than three son lock locks for realizing parallel connection between square batteries; when the square batteries are connected in series, the total positive end and the total negative end of the square battery pack are locked by a master lock with one prism and a slave lock sleeve to form extreme leading-out.

Furthermore, a plurality of mounting grooves with openings at the upper ends are formed in the periphery of the outer side surface of the upper end of the locking column of the sub-lock, a circle of connecting guide grooves are formed in the outer side surface of the upper end of the locking column of the sub-lock below the mounting grooves, and the connecting guide grooves are communicated with the lower ends of the mounting grooves; the through-hole inner wall periphery of female lock is provided with a plurality of bead, the through-hole inner wall of female lock is located the below of bead and is provided with round bulge, bulge has certain compliance and elasticity, the bead is in the same place with the supporting gomphosis of mounting groove one-to-one of sub-lock and the rotatory card of tip in the connecting guide slot of sub-lock under the bead, the bulge corresponds the supporting gomphosis in the same place with the connecting guide slot of sub-lock.

Furthermore, when the prism is formed by matching more than two female locks and the sub-lock phase sleeves for locking and is used for realizing parallel connection between the square batteries, the position, close to the top, of the outer side face of any prism, which is positioned on the outermost side of the female lock, is vertically provided with the lead-out piece. The lead-out pieces are used as a total positive terminal lead-out end and a total negative terminal lead-out end of the square battery pack which are connected in parallel.

Furthermore, after the female lock and the male lock are sleeved and locked, the bearing tension parallel to the locking column direction of the male lock is more than 3 Kg. That is, after the female lock and the male lock are locked together, a pulling force of 3kg or more is required to remove the female lock from the male lock in a direction parallel to the locking cylinder of the male lock.

The utility model discloses a connection structure between square battery, moreover, the steam generator is simple in structure, high durability and convenient use, directly regard sub-lock as square battery just, the negative pole end, only need to lock mother and the supporting registrate locking of sub-lock together can realize parallelly connected or establishing ties, need not use square battery welding equipment completely, connection between the square battery does not have any welding vestige, the outward appearance is comparatively pleasing to the eye, and mother lock can satisfy the pulling force demand of being connected after being in the same place with sub-lock locking completely, the connected mode is simple and direct, when needs are maintained, only need make mother lock and sub-lock phase separation to maintain mother lock and sub-lock phase pull up, can realize square battery's point-to-point maintenance.

Drawings

Fig. 1 is an exploded schematic view of a connection structure between square batteries in example 1;

FIG. 2 is a schematic structural view of a neutron lock in embodiment 1;

FIG. 3(a) is a schematic structural view of a female lock in embodiment 1;

FIG. 3(b) is a top view of a single prism of the female lock of example 1.

Detailed Description

The embodiment is only for illustrating one implementation of the present invention, and is not to be taken as a limiting illustration of the protection scope of the present invention.

Example 1

A connecting structure between square batteries is shown in figure 1 and comprises a sub-lock 1 and a main lock 2, as shown in figure 2, the sub-lock 1 comprises a welding plate 11, a locking column 12 is vertically arranged at the top of the welding plate 11, a plurality of mounting grooves 13 with openings at the upper ends are arranged on the periphery of the outer side surface of the upper end of the locking column 12, a connecting guide groove 14 which is connected into a circle is arranged below the mounting grooves 13 on the outer side surface of the upper end of the locking column 12, the connecting guide groove 14 is communicated with the lower ends of the mounting grooves 13, and the sub-lock 1 is welded with an anode tab or a cathode tab of a corresponding square battery through the welding plate 11 to form an anode pole or a cathode pole; as shown in fig. 3(a) (the convex ribs and the convex parts are not shown in the figure), and fig. 3(b), the primary lock 2 comprises two prisms 21 with polygonal cross sections, through holes 22 are formed on the prisms 21, a plurality of convex ribs 23 are arranged on the periphery of the inner wall of the through holes 22, a circle of convex parts 24 are arranged on the inner wall of the through holes 22 and located below the convex ribs 23, the convex parts 24 have certain softness and elasticity, the convex ribs 23 are correspondingly and correspondingly embedded with the mounting grooves 13 of the secondary lock 1 one by one, the lower end parts of the convex ribs 23 are rotationally clamped in the connecting guide grooves 14 of the secondary lock 1, the convex parts 24 are correspondingly and correspondingly embedded with the connecting guide grooves 14 of the secondary lock 1, so that the through holes 22 are correspondingly and correspondingly embedded and locked with the locking columns 12 of the secondary lock 1, a connecting piece is vertically connected between the outer side surfaces of the two prisms 21 and the position close to the top, an outgoing piece 26 is vertically, the female lock 2 and the sub-lock 1 are matched and locked to realize parallel connection of the square batteries; after the primary lock 2 and the secondary lock 1 are sleeved and locked, the bearing tension parallel to the locking column direction of the secondary lock is more than 3 Kg.

When in use, the sub-lock is welded with the positive pole lug or the negative pole lug of the corresponding square battery through the welding plate to form a positive pole column or a negative pole column, the prismatic convex edge of one main lock moves downwards along the mounting groove of the sub-lock of the square battery serving as the positive pole column until the lower end part of the convex edge of the main lock is arranged in the connecting guide groove of the sub-lock and the convex part of the main lock is matched and embedded in the connecting guide groove of the sub-lock, the main lock is rotated at a small angle to enable the lower end part of the convex edge of the main lock to be clamped in the connecting guide groove of the sub-lock, the nesting locking of the prismatic edge of the main lock and the sub-lock of the square battery serving as the positive pole column is completed, and the nesting locking of the other prismatic edge of the main lock and the sub-lock of the other, namely, the action that the two prisms of the master lock and the sub-locks of the two square batteries as the positive pole posts are correspondingly sleeved and locked together one by one is completed; and then completing the action of correspondingly sleeving and locking the two prisms of the other female lock and the sub-locks of the two square batteries serving as the cathode poles together in a one-to-one matching manner according to the same method, so that the parallel connection of the two square batteries is completed.

Example 2

A connection structure between prismatic batteries, which is similar in structure to the connection structure between prismatic batteries of example 1, except that: the master lock has two structures, wherein one master lock comprises a prism, and the master lock and the slave lock are sleeved and locked to realize the extreme extraction of the square battery; the other type of female lock comprises two prisms, the positions, close to the tops, of the outer side faces of the two prisms located on the outermost sides of the female lock are not provided with leading-out pieces, and the female lock and the sub-lock are locked in a sleeved mode and used for achieving series connection of the square batteries.

When used, the method of use is substantially the same as that in example 1, except that: the two prisms of the two prismatic female locks are correspondingly matched and sleeved with the sub-locks of one square battery serving as a positive pole and the sub-locks of the other square battery serving as a negative pole in a one-to-one matching mode to be locked together, so that the connection of the sub-locks of the two adjacent square batteries serving as the positive pole and the negative pole is realized, the connection of the sub-locks of the other two adjacent square batteries serving as the positive pole and the negative pole is sequentially performed through the two prismatic female locks according to the same method, then the two prismatic female locks are respectively matched and sleeved with the remaining sub-locks (namely, a total positive pole end) serving as the positive pole and the remaining sub-locks (namely, a total negative pole end) serving as the negative pole of the plurality of square batteries connected in series, and the series connection of more than two square batteries is finally completed.

Example 3

A connection structure between prismatic batteries, which is similar in structure to the connection structure between prismatic batteries of example 1, except that: the female lock comprises three prisms, and connecting pieces between two adjacent prisms are arranged in a straight line.

When used, the method of use is substantially the same as that in example 1, except that: the three prisms of one female lock and the sub-locks of the three square batteries serving as the positive pole posts are correspondingly sleeved and locked together one by one, and the three prisms of the other female lock and the sub-locks of the three square batteries serving as the negative pole posts are correspondingly sleeved and locked together one by one, so that the parallel connection of the three square batteries is completed.

Claims

1. A connection structure between square batteries is characterized in that: the square battery locking device comprises a sub-lock and a main lock, wherein the sub-lock comprises a welding plate, a locking column is vertically arranged at the top of the welding plate, and the sub-lock is welded with a positive electrode lug or a negative electrode lug of a corresponding square battery through the welding plate to form a positive electrode pole or a negative electrode pole; the primary lock comprises one or more than two prisms with polygonal cross sections, through holes are formed in the prisms, and the through holes are matched with the locking columns of the secondary lock in a sleeved and locked mode; when the prism is one, the position, close to the top, of the outer side surface of the prism is vertically connected with a leading-out piece, and a female lock and a sub-lock which are provided with the prism are sleeved and locked to realize the extreme leading-out of the square battery; when the prism is more than two, be connected with the connection piece perpendicularly between the lateral surface of two adjacent prisms is close to the top position and the connection piece is the straight line and arranges, the prism is that the female lock more than two is used for realizing the connection between the square cell with sub lock phase cover locking.

2. The connection structure between prismatic batteries according to claim 1, wherein: a plurality of mounting grooves with openings at the upper ends are formed in the periphery of the outer side surface of the upper end of the locking column of the sub-lock, a circle of connecting guide grooves are formed in the outer side surface of the upper end of the locking column of the sub-lock below the mounting grooves, and the connecting guide grooves are communicated with the lower ends of the mounting grooves; the through-hole inner wall periphery of female lock is provided with a plurality of bead, the through-hole inner wall of female lock is located the below of bead and is provided with round bulge, bulge has certain compliance and elasticity, the bead is in the same place with the supporting gomphosis of mounting groove one-to-one of sub-lock and the rotatory card of tip in the connecting guide slot of sub-lock under the bead, the bulge corresponds the supporting gomphosis in the same place with the connecting guide slot of sub-lock.

3. The connection structure between prismatic batteries according to claim 1 or 2, wherein: when the prism is formed by matching more than two female locks and the male lock and is used for realizing parallel connection between the square batteries, the position, close to the top, of the outer side surface of any prism positioned at the outermost edge of the female lock is vertically provided with a lead-out piece.

4. The connection structure between prismatic batteries according to claim 1 or 2, wherein: after the female lock and the sub lock are sleeved and locked, the bearing tension parallel to the locking column direction of the sub lock is more than 3 Kg.

5. The connection structure between the prismatic batteries according to claim 3, wherein: after the female lock and the sub lock are sleeved and locked, the bearing tension parallel to the locking column direction of the sub lock is more than 3 Kg.