Convergence junction box of energy storage battery

Abstract

A confluence junction box of an energy storage battery is characterized by comprising a bottom plate, a reinforcing copper plate and a cover plate, the utility model provides a regular and beautiful confluence junction box, which avoids line faults caused by contact between a terminal and a metal battery rack, improves the overall structural strength of a confluence binding post, avoids loosening or damage of the binding post due to mechanical effect, and has popularization and application values.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage battery systems, in particular to an energy storage battery confluence junction box. Background Art

[0002] At present, in the battery pack structure of energy storage power stations, generally, several energy storage battery units arranged on a battery rack are connected in series, and positive and negative busbars are set on one side of the battery rack. Then, wires are connected from the terminals to the next battery pack or the load unit. In order to meet the large load power, the connected wires are generally thicker hard copper wires. The rough connection method leads to messy lines on the terminals, and the leads often contact the battery rack, causing circuit failures. When moving or transporting, the hard and thick copper wires are prone to imperceptible mechanical stress. The terminals on the battery rack are often loose or damaged due to mechanical effects, which has an adverse effect on the efficiency of the energy storage power station and the convenience of daily maintenance. Summary of the invention

[0003] The utility model provides an energy storage battery bus junction box, which provides more regular wiring ports on the battery rack, reduces the possibility of contact between the lead wires and the battery rack, improves the overall structural strength of the bus terminal, and avoids the terminal from loosening or being damaged due to mechanical effects.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An energy storage battery bus junction box, characterized by comprising a bottom plate, a reinforcement copper plate and a cover plate;

[0006] The bottom plate is provided with two rows of terminal holes that are evenly distributed in a horizontal linear manner. The terminal holes are cylindrical through holes that protrude upward by a certain height, and are used to allow threaded terminals to pass through them. At least two fixed positioning holes are provided between the two rows of terminal holes. The upper ends of the fixed positioning holes are cylindrical through holes that protrude upward by a certain height and the protruding height is higher than the terminal holes. The bottom of the lower end of the fixed positioning hole is provided with a step hole with a smaller hole diameter than the upper end, and is used to allow bolts to pass through the step hole at the lower end of the fixed positioning hole and be fixed to the battery rack;

[0007] The reinforcing copper plate is provided with through holes corresponding to the hole positions on the base plate, wherein the aperture of the through holes corresponding to the positions of the terminal holes is consistent with the inner diameter of the terminal holes, so as to allow the terminal to pass through; the aperture of the through holes on the reinforcing copper plate consistent with the positions of the fixed positioning holes is consistent with the outer circular shape of the columnar protrusions of the fixed positioning holes, so as to sleeve the through holes at the corresponding positions on the reinforcing copper plate on the cylindrical protrusions of the fixed positioning holes, thereby limiting the lateral displacement of the reinforcing copper plate and positioning the reinforcing copper plate.

[0008] Preferably, the cover plate is in the shape of a box with openings on the side and bottom, and protruding convex strips are provided on the two opposite side walls on the inner side of the cover plate, and protruding skirts with a certain thickness are provided on both sides of the bottom plate, and strip grooves are provided on the upper ends of the skirts to cooperate with the convex strips on the cover plate. The convex strips and the grooves cooperate to detachably mount the cover plate on the bottom plate. Such a structure facilitates disassembly and prevents the terminal posts and wiring harnesses in the junction box from being exposed to the outside.

[0009] Preferably, an integrally formed convex strip is provided between the columnar protrusions of adjacent terminal holes, and extends outside the terminal holes at both ends to the skirts on both sides of the bottom plate, so as to further increase the overall stability of the terminal holes and prevent them from being damaged.

[0010] Preferably, two parallel convex strips are provided on the upper and lower opposite sides of the fixed positioning hole on the back side opposite to the protruding end of the fixed positioning hole on the base plate, and the spacing distance between the convex strips is consistent with the size of the mounting rod of the battery rack, so as to allow the base plate to hold the battery rack more stably and increase the stability of the base plate fixed on the battery rack.

[0011] The installation method and working principle of the utility model are as follows: first, the bottom plate can be held on the battery rack mounting rod corresponding to the battery pack terminal position through the two convex strips on the back, and the bolts are passed through the step holes at the bottom of the fixed positioning holes to connect with the threaded holes corresponding to the mounting rods of the battery rack, and then the reinforcing copper plate is sleeved on the protruding column of the fixed positioning hole. At this time, the terminal also passes through the through holes at the corresponding positions on the fixed copper plate, and then the rings at the ends of the wires are sleeved on the terminal and the nuts are screwed on to complete the wiring, and then the cover plate is put on to avoid the terminal and the wire ends being exposed to the outside, thereby completing the busbar wiring of the energy storage battery pack.

[0012] The beneficial effects of the utility model are: providing a neat and beautiful busbar junction box, avoiding line failure caused by contact between the terminal and the metal battery rack, improving the overall structural strength of the busbar terminal, avoiding loosening or damage of the terminal due to mechanical effects, and having promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0015] Figure 3 This is a schematic diagram of the bottom plate structure of an embodiment of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the reinforced copper plate in the embodiment of the utility model;

[0017] Figure 5 This is a schematic diagram of the cover structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example

[0019] As shown in the figure, an energy storage battery junction box includes a bottom plate 1, a reinforcement copper plate 2 and a cover plate 3;

[0020] The bottom plate 1 is provided with two rows of terminal holes 11 that are evenly distributed in a horizontal linear manner. The terminal holes 11 are cylindrical through holes that protrude upward by a certain height, and are used to allow threaded terminals to pass through them. At least two fixed positioning holes 12 are provided between the two rows of terminal holes 11. The upper ends of the fixed positioning holes 12 are cylindrical through holes that protrude upward by a certain height, and the protruding height is higher than the terminal holes 11. The bottom of the lower end of the fixed positioning hole 12 is provided with a stepped hole 121 with a smaller hole diameter than the upper end, and is used to allow bolts to pass through the stepped hole 121 at the lower end of the fixed positioning hole 12 and be fixed to the battery rack;

[0021] The reinforcing copper plate 2 is provided with through holes corresponding to the hole positions on the base plate 1, wherein the aperture of the through hole corresponding to the position of the terminal hole 11 is consistent with the inner diameter of the terminal hole 11, and is used to allow the terminal to pass through. The aperture of the through hole consistent with the hole position of the fixed positioning hole 12 on the reinforcing copper plate 2 is consistent with the outer circular shape of the columnar protrusion of the fixed positioning hole 12, and is used to sleeve the through hole at the corresponding position on the reinforcing copper plate 2 on the cylindrical protrusion of the fixed positioning hole 12, so as to limit the lateral displacement of the reinforcing copper plate 2 for positioning the reinforcing copper plate 2.

[0022] The cover plate 3 is in the shape of a box with open sides and bottom. The inner side walls of the cover plate 3 are provided with protruding ridges 31. The base plate 1 is provided with protruding skirts 13 of a certain thickness on both sides. The upper end of the skirt 13 is provided with a strip groove 131 that cooperates with the protruding ridge 31 on the cover plate. The protruding ridge 31 and the groove 131 cooperate to detachably mount the cover plate 3 on the base plate 1. Such a structure is convenient for disassembly and prevents the terminal posts and wiring harness in the junction box from being exposed to the outside.

[0023] An integrally formed convex strip 14 is provided between the columnar protrusions of adjacent terminal holes 11 and extends outside the terminal holes 11 at both ends to the skirts 13 on both sides of the bottom plate, so as to further increase the overall stability of the terminal holes 11 and prevent them from being damaged.

[0024] On the back side of the base plate 1 opposite to the protruding end of the fixing positioning hole 12, two parallel convex strips 15 are provided on the upper and lower opposite sides of the fixing positioning hole 12. The spacing distance between the convex strips 15 is consistent with the size of the mounting rod of the battery rack, which is used to allow the base plate 1 to hold the battery rack more stably and increase the stability of the base plate 1 fixed on the battery rack.

[0025] The installation method and working principle are as follows: first, the bottom plate 1 can be held on the battery rack mounting rod corresponding to the battery pack terminal position through the two convex strips 15 on the back, and the bolt is passed through the step hole 121 at the bottom of the fixed positioning hole 12 to connect with the threaded hole corresponding to the mounting rod of the battery rack, and then the reinforcing copper plate 2 is sleeved on the protruding column of the fixed positioning hole 12. At this time, the terminal also passes through the through hole at the corresponding position on the fixed copper plate 2, and then the ring at the end of the wire is sleeved on the terminal and the nut is screwed on to complete the wiring, and then the cover plate 3 is put on to avoid the terminal and the wire end being exposed to the outside, and the busbar wiring of the energy storage battery pack is completed.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A storage battery junction box, characterized by comprising a bottom plate, a reinforcement copper plate and a cover plate; The bottom plate is provided with two rows of terminal holes that are evenly distributed in a horizontal linear manner. The terminal holes are cylindrical through holes that protrude upward by a certain height, and are used to allow threaded terminals to pass through them. At least two fixed positioning holes are provided between the two rows of terminal holes. The upper ends of the fixed positioning holes are cylindrical through holes that protrude upward by a certain height and the protruding height is higher than the terminal holes. The bottom of the lower end of the fixed positioning hole is provided with a step hole with a smaller hole diameter than the upper end, and is used to allow bolts to pass through the step hole at the lower end of the fixed positioning hole and be fixed to the battery rack; The reinforcing copper plate is provided with through holes corresponding to the hole positions on the base plate, wherein the aperture of the through hole corresponding to the position of the terminal hole is consistent with the inner diameter of the terminal hole, so as to allow the terminal to pass through; the aperture of the through hole on the reinforcing copper plate consistent with the hole position of the fixed positioning hole is consistent with the outer circular shape of the columnar protrusion of the fixed positioning hole, so as to sleeve the through hole at the corresponding position on the reinforcing copper plate on the cylindrical protrusion of the fixed positioning hole, so as to position the reinforcing copper plate.

2. The energy storage battery junction box according to claim 1, characterized in that The cover plate is in the shape of a box with openings on the side and bottom. The inner side walls of the cover plate are provided with protruding convex strips. The two sides of the bottom plate are provided with protruding skirts with a certain thickness. The upper ends of the skirts are provided with strip grooves that cooperate with the convex strips on the cover plate. The convex strips and the grooves cooperate to detachably mount the cover plate on the bottom plate.

3. The energy storage battery junction box according to claim 2, characterized in that An integrally formed convex strip is provided between the columnar protrusions of adjacent terminal holes, and extends outside the terminal holes at both ends to the skirts on both sides of the bottom plate, so as to further increase the overall stability of the terminal holes.

4. An energy storage battery junction box as claimed in claim 1, 2 or 3, characterized in that On the back side of the base plate opposite to the protruding end of the fixed positioning hole, two parallel convex strips are provided on the upper and lower opposite sides of the fixed positioning hole. The spacing distance between the convex strips is consistent with the size of the mounting rod of the battery rack, so as to allow the base plate to hold the battery rack more stably.

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