Protective device for energy storage lithium battery

Abstract

A protection device for an energy storage lithium battery comprises an energy storage box body, heat dissipation holes are formed in the side wall of the energy storage box body, a movable assembly is installed at the top of the energy storage box body, the movable assembly comprises a movable supporting column, a fixed shell and a first compression spring, a mounting inner cavity is formed in the fixed shell, and a fixed base is arranged at the bottom of the fixed shell; more than three limiting through holes are distributed in the side wall according to an annular array, the movable supporting column is arranged in the mounting inner cavity, a first compression spring is arranged between the movable supporting column and the fixed base, a limiting rod penetrates through the limiting through holes, one end of the limiting rod is in threaded connection with the movable supporting column, and the other end of the limiting rod is connected with a limiting check block; the limiting rod is sleeved with a second compression spring and a third compression spring, the two ends of the second compression spring abut against the outer wall of the movable supporting column and the inner wall of the fixed shell correspondingly, and the two ends of the third compression spring abut against the limiting check block and the outer wall of the fixed shell correspondingly. According to the invention, the lithium battery in the energy storage box body can be protected from being damaged due to external violent impact.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a protective device for energy storage lithium batteries. Background Art

[0002] Energy storage is mostly carried out using lithium batteries, such as installing lithium battery packs in lithium battery energy storage equipment, and placing lithium battery energy storage equipment at a fixed point so that users can obtain electricity in time outdoors. At present, some energy storage boxes need to be placed in mountainous areas for work. Sometimes, rolling rocks or falling trees will violently hit the energy storage equipment and cause the lithium batteries in the energy storage box to vibrate violently, which can easily cause damage to the energy storage box and lithium batteries, affecting the service life of the lithium batteries and increasing maintenance costs. Summary of the invention

[0003] The object of the present invention is to provide a protective device for energy storage lithium batteries, which can effectively solve the technical problems mentioned in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A protective device for an energy storage lithium battery comprises an energy storage box, a side wall of the energy storage box is provided with a heat dissipation hole, a movable component is installed on the top, the movable component comprises a movable pillar, a fixed shell and a first compression spring, the fixed shell is provided with an installation inner cavity, a fixed base is provided at the bottom, and more than three limiting through holes are distributed on the side wall in a circular array, the movable pillar is arranged in the installation inner cavity, a first compression spring is arranged between the movable pillar and the fixed base, a limiting rod is passed through the limiting through hole, one end of the limiting rod is threadedly connected to the movable pillar, and the other end is connected to a limiting block, a second compression spring and a third compression spring are sleeved on the limiting rod, two ends of the second compression spring respectively abut against the outer wall of the movable pillar and the inner wall of the fixed shell, two ends of the third compression spring respectively abut against the limiting block and the outer wall of the fixed shell, When the movable pillar is not subjected to external force, the movable pillar is located at the center position of the installation inner cavity, the central axis of the limit rod coincides with the central axis of the limit through hole, and a movable gap is arranged between the limit rod and the inner wall of the limit through hole, and a protective top plate is installed after the top of the movable pillar extends out of the installation inner cavity, and a side guard is arranged on one side of the protective top plate, and the side guard comprises a side guard plate, a fourth shock absorbing spring and a first limit block equidistantly distributed on one side of the protective top plate, and a second limit block corresponding to the first limit block is arranged on the bottom of the energy storage box, and a first limit groove and a second limit groove are respectively provided on the first limit block and the second limit block, and the lower end of the side guard plate passes through the first limit groove and is inserted into the second limit groove, and the fourth shock absorbing spring is arranged in the second limit groove and one end is connected to the side wall of the energy storage box, and the other end is in contact with the side guard plate.

[0005] Preferably, it includes a limit assembly, which includes a limit plate, a plurality of limit bosses are distributed on the bottom of the limit plate, and fixing screws are respectively connected to both ends. The limit boss is arranged in the first limit groove and is pressed on the top of the side protective plate, and the lower end of the fixing screw passes through the guide through hole on the sliding pressure block and is threadedly connected to the locking nut. The sliding pressure block is provided with an open groove, and the open groove is engaged with the side protective plate.

[0006] Preferably, it includes a side protective member, which includes a side protective plate and an L-shaped limiting plate connected to the side protective plate, the L-shaped limiting plate is provided with a fixing boss, the fixing boss is provided with a mounting groove, a threaded hole is provided on the side wall, a clamping block is provided in the mounting groove, an adjusting bolt is threadedly connected in the threaded hole, and one end of the adjusting bolt pushes the clamping block to be pressed against the side protective plate.

[0007] Preferably, the side protection plates are distributed at equal intervals in the vertical direction.

[0008] Preferably, the two side walls of the side protection plate are respectively attached to the L-shaped limit plate and the fixed boss, and the protective top plate, the side protection plate, the clamping block and the side protection plate are all made of rubber material.

[0009] Preferably, a third mounting groove is provided at the top of the movable pillar, a fourth mounting groove is distributed around the third mounting groove, a third mounting boss is provided at the bottom of the protective top plate, a fourth mounting boss is distributed around the third mounting boss, the third mounting boss and the fourth mounting boss are respectively arranged in the third mounting groove and the fourth mounting groove, and the fastening bolts pass through the protective top plate and the third mounting boss in turn and are threadedly connected to the bottom of the third mounting groove.

[0010] Preferably, the fixed shell and the third mounting boss are respectively located at the middle position of the top of the energy storage box and the protective top plate.

[0011] Preferably, there are more than two positioning bosses distributed in a circular array on the side wall of the fixed base, and the top of the energy storage box is provided with a first mounting groove for installing the fixed base and a second mounting groove for installing the positioning boss, and the positioning boss is fixed in the second mounting groove by screws.

[0012] Preferably, the fixed shell and the installation inner cavity are both cylindrical structures.

[0013] Preferably, the heat dissipation holes are distributed in a linear array on the energy storage box, and the heat dissipation holes have a rectangular structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When a heavy object from the outside hits the protective top plate, on the one hand, the protective top plate will push the movable support to move in the vertical direction, and at the same time the first compression spring will shrink to reduce the impact of the external force on the energy storage box and the lithium battery pack in the energy storage box in the vertical direction; on the other hand, according to the different directions of the external force applied to the protective top plate, the protective top plate can also shake in the horizontal direction, and at the same time the protective top plate drives the movable support to move toward the inner wall of the installation cavity on the fixed shell, and when the second compression spring shrinks, the third compression spring extends, and both of them simultaneously reduce the impact of the external force on the energy storage box and the lithium battery pack in the energy storage box in the horizontal direction, and the anti-impact effect is good; and because the central axis of the limit rod coincides with the central axis of the limit through hole and a movable gap is provided between the limit rod and the inner wall of the limit through hole, the protective top plate can simultaneously move along two mutually perpendicular limit rods on the horizontal plane. direction, and two mutually perpendicular limit rods on the horizontal plane can be displaced in the active gap between the limit rod and the inner wall of the limit through hole; similarly, the side guard plate and the side guard plate protect the side wall of the energy storage box, and at the same time, a reasonable gap is maintained between the side guard plate and the side guard plate and the energy storage box to ensure that the side guard plate and the side guard plate can perform shock-absorbing movement when hit by foreign objects, and the displacement of the side guard plate will drive the fourth shock-absorbing spring to perform telescopic movement, thereby further improving the impact resistance; the number of side guard plates in the vertical direction can be set according to the height of the energy storage box, and when the spacing between adjacent side guard plates is reasonably adjusted, the side guard plate can be slid to the corresponding position along the side guard plate along the fixed boss, and then the adjusting bolt can be adjusted until the adjusting bolt pushes the clamping block to be pressed tightly on the side guard plate, which is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram from a first perspective of a protective device for an energy storage lithium battery in an embodiment of the present invention; Figure 2 is a schematic diagram from a second viewing angle of a protective device for an energy storage lithium battery in an embodiment of the present invention; Figure 3 is a schematic structural diagram of an energy storage box in an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of the active components in an embodiment of the present invention; Figure 5 is a schematic structural diagram of a position limiting assembly in an embodiment of the present invention; Figure 6 is a schematic structural diagram of a side protection member in an embodiment of the present invention; Figure 7 is a schematic structural diagram of a protective top plate in an embodiment of the present invention; In the figure, 1, energy storage box, 2, heat dissipation hole, 3, movable support, 4, fixed shell, 5, installation cavity, 6, fixed base, 7, limiting through hole, 8, limiting rod, 9, limiting block, 10, second compression spring, 11, third compression spring, 12, protective top plate, 13, side protective plate, 14, fourth shock-absorbing spring, 15, first limiting block, 16, second limiting block, 17, first limiting groove, 18, second limiting groove, 19, limiting plate, 20, limiting boss, 21, fixing screw, 22, sliding pressure block, 23, locking nut, 24, opening groove, 25, side protective plate, 26, L-shaped limiting plate, 27, fixing boss, 28, installation groove, 29, pressing block, 30, adjusting bolt, 31, third installation groove, 32, fourth installation groove, 33, second installation groove, 34, positioning boss, 35, first installation groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-7As shown, a protective device for an energy storage lithium battery comprises an energy storage box 1, a side wall of the energy storage box 1 is provided with a heat dissipation hole 2, a movable component is installed on the top, the movable component comprises a movable pillar 3, a fixed shell 4 and a first compression spring, the fixed shell 4 is provided with an installation cavity 5, a fixed base 6 is provided at the bottom, and more than three limiting through holes 7 are distributed on the side wall in a circular array, the movable pillar 3 is arranged in the installation cavity 5, a first compression spring is arranged between the movable pillar 3 and the fixed base 6, a limiting rod 8 is passed through the limiting through hole 7, one end of the limiting rod 8 is threadedly connected to the movable pillar 3, and the other end is connected to the limiting block 9, a second compression spring 10 and a third compression spring 11 are sleeved on the limiting rod 8, two ends of the second compression spring 10 respectively abut against the outer wall of the movable pillar 3 and the inner wall of the fixed shell 4, two ends of the third compression spring 11 respectively abut against the limiting block 9 and the outer wall of the fixed shell 4, and the movable pillar 3 is not subject to the limiting through hole 7. Under the external force state, the movable pillar 3 is located at the center of the installation cavity 5, the central axis of the limit rod 8 coincides with the central axis of the limit through hole 7, and a movable gap is provided between the limit rod 8 and the inner wall of the limit through hole 7, and the top of the movable pillar 3 is extended out of the installation cavity 5 and a protective top plate 12 is installed, and a side protective member is provided on one side of the protective top plate 12, and the side protective member includes a side protective plate 13, a fourth shock absorbing spring 14 and a first spring 15 which is evenly distributed on one side of the protective top plate 12. A limiting block 15, a second limiting block 16 corresponding to the first limiting block 15 is distributed at the bottom of the energy storage box 1, a first limiting groove 17 and a second limiting groove 18 are respectively opened on the first limiting block 15 and the second limiting block 16, the lower end of the side protection plate 13 passes through the first limiting groove 17 and is inserted into the second limiting groove 18, the fourth shock-absorbing spring 14 is arranged in the second limiting groove 18 and one end is connected to the side wall of the energy storage box 1, and the other end is against the side protection plate 13; When the protective top plate 12 above the energy storage box 1 is subjected to a severe impact, the movable support 3 will move in the vertical direction, and the first compression spring will shrink at the same time; if subjected to a lateral external force, the protective top plate 12 can also shake in the horizontal direction, and the movable support 3 moves toward the inner wall 5 of the installation cavity on the fixed shell 4, and when the second compression spring 10 shrinks, the third compression spring 11 stretches, and both reduce the impact of the external force on the energy storage box 1 and the lithium battery pack in the energy storage box 1 in the horizontal direction; The limiting assembly includes a limiting plate 19, a plurality of limiting bosses 20 are distributed at the bottom of the limiting plate 19, and fixing screws 21 are connected to both ends respectively. The limiting bosses 20 are arranged in the first limiting grooves 17 and pressed on the top of the side protection plate 13. The lower end of the fixing screw 21 passes through the guide through hole on the sliding block 22 and is threadedly connected to the locking nut 23. The sliding block 22 is provided with an open groove 24, and the open groove 24 is engaged with the side protection plate 13; Adjust the locking nut 23 so that the opening groove 24 on the sliding block 22 slides along the side protection plate 13 until the sliding block 22 is pressed against the first limiting block 15, and the limiting boss 20 on the limiting plate 19 is pressed against the side protection plate 13 in the first limiting groove 17; The side guard comprises a side guard plate 25 and an L-shaped limit plate 26 connected to the side guard plate 25. The L-shaped limit plate 26 is provided with a fixing boss 27. The fixing boss 27 is provided with a mounting groove 28. A threaded hole is provided on the side wall. A clamping block 29 is provided in the mounting groove 28. An adjusting bolt 30 is threadedly connected in the threaded hole. One end of the adjusting bolt 30 pushes the clamping block 29 to be pressed against the side guard plate 13. The side protection plates 25 are distributed at equal intervals along the vertical direction; The two side walls of the side protection plate 13 are respectively attached to the L-shaped limit plate 26 and the fixed boss 27, and the protective top plate 12, the side protection plate 13, the pressing block 29 and the side protection plate 25 are all made of rubber material; A third mounting groove 31 is provided at the top of the movable pillar 3, and a fourth mounting groove 32 is distributed around the third mounting groove 31. A third mounting boss is provided at the bottom of the protective top plate 12, and a fourth mounting boss is distributed around the third mounting boss. The third mounting boss and the fourth mounting boss are respectively arranged in the third mounting groove 31 and the fourth mounting groove 32, and the fastening bolts pass through the protective top plate 12 and the third mounting boss in turn and are threadedly connected to the bottom of the third mounting groove 32.

[0018] The fixed housing 4 and the third mounting boss are respectively located at the middle position between the top of the energy storage box 1 and the protective top plate 12; The side wall of the fixed base 6 is provided with two or more positioning bosses 34 arranged in a circumferential array, the top of the energy storage box 1 is provided with a first mounting groove 35 for mounting the fixed base 6 and a second mounting groove 33 for mounting the positioning boss 34, and the positioning boss 34 is fixed in the second mounting groove 33 by screws; The fixed shell 4 and the installation inner cavity 5 are both cylindrical structures; The heat dissipation holes 2 are distributed in a linear array on the energy storage box 1, and the heat dissipation holes 2 are in a rectangular structure.

[0019] When a heavy object from the outside hits the protective top plate 12, on the one hand, the protective top plate 12 will push the movable support 3 to move in the vertical direction, and at the same time the first compression spring will shrink to reduce the impact of the external force on the energy storage box 1 and the lithium battery pack in the energy storage box 1 in the vertical direction; on the other hand, according to the different directions of the external force applied to the protective top plate 12, the protective top plate 12 can also shake in the horizontal direction, and at the same time the protective top plate 12 drives the movable support 3 to move toward the inner wall of the installation cavity 5 on the fixed shell 4, and when the second compression spring 10 shrinks, the third compression spring 11 extends, and both of them simultaneously reduce the impact of the external force on the energy storage box 1 and the lithium battery pack in the energy storage box 1 in the horizontal direction, and the anti-impact effect is good; and because the central axis of the limit rod 8 coincides with the central axis of the limit through hole 7 and a movable gap is provided between the limit rod 8 and the inner wall of the limit through hole 7, the protective top plate 12 can simultaneously move along the directions of the two mutually perpendicular limit rods 8 on the horizontal plane Displacement, and two mutually perpendicular limit rods 8 on the horizontal plane can be displaced in the movable gap between the limit rod 8 and the inner wall of the limit through hole 7; similarly, the side guard plate 13 and the side guard plate 25 protect the side wall of the energy storage box 1, and at the same time, the side guard plate 13 and the side guard plate 25 maintain a reasonable gap with the energy storage box 1 to ensure that the side guard plate 13 and the side guard plate 25 can perform shock-absorbing movement when hit by foreign objects, and the side guard plate 13 will drive the fourth shock-absorbing spring 14 to perform telescopic movement after the displacement of the side guard plate 13, so as to further improve the impact resistance; the number of side guard plates 25 in the vertical direction can be set according to the height of the energy storage box 1, and when the spacing between adjacent side guard plates 25 is reasonably adjusted, the side guard plate 25 can be slid to the corresponding position along the side guard plate 13 along the fixed boss 27, and then the adjusting bolt 30 is adjusted until the adjusting bolt 30 pushes the clamping block 29 to be pressed on the side guard plate 13, which is convenient for installation.

[0020] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A protective device for energy storage lithium batteries, characterized in that: The invention comprises an energy storage box, the side wall of which is provided with heat dissipation holes, a movable component is installed on the top, the movable component comprises a movable pillar, a fixed shell and a first compression spring, the fixed shell is provided with an installation inner cavity, a fixed base is provided at the bottom, and more than three limiting through holes are distributed on the side wall in a circular array, the movable pillar is arranged in the installation inner cavity, a first compression spring is arranged between the movable pillar and the fixed base, a limiting rod is passed through the limiting through hole, one end of the limiting rod is threadedly connected to the movable pillar, and the other end is connected to the limiting block, a second compression spring and a third compression spring are sleeved on the limiting rod, two ends of the second compression spring respectively abut against the outer wall of the movable pillar and the inner wall of the fixed shell, two ends of the third compression spring respectively abut against the limiting block and the outer wall of the fixed shell, and the movable pillar is not subject to external Under the force state, the movable pillar is located at the center position of the installation inner cavity, the central axis of the limit rod coincides with the central axis of the limit through hole, and a movable gap is arranged between the limit rod and the inner wall of the limit through hole, and a protective top plate is installed after the top of the movable pillar extends out of the installation inner cavity, and a side protective member is arranged on one side of the protective top plate, and the side protective member includes a side protective plate, a fourth shock-absorbing spring and a first limit block equidistantly distributed on one side of the protective top plate, and a second limit block corresponding to the first limit block is distributed on the bottom of the energy storage box, and a first limit groove and a second limit groove are respectively provided on the first limit block and the second limit block, and the lower end of the side protective plate passes through the first limit groove and is inserted into the second limit groove, and the fourth shock-absorbing spring is arranged in the second limit groove and one end is connected to the side wall of the energy storage box, and the other end is in contact with the side protective plate.

2. A protective device for energy storage lithium batteries according to claim 1, characterized in that: It includes a limit assembly, which includes a limit plate, a plurality of limit bosses are distributed on the bottom of the limit plate, and fixing screws are respectively connected at both ends. The limit boss is arranged in the first limit groove and is pressed on the top of the side protection plate. The lower end of the fixing screw passes through the guide through hole on the sliding pressure block and is threadedly connected to the locking nut. The sliding pressure block is provided with an open groove, and the open groove is engaged with the side protection plate.

3. A protective device for energy storage lithium batteries according to claim 2, characterized in that: It includes a side protective part, which includes a side protective plate and an L-shaped limiting plate connected to the side protective plate, a fixing boss is arranged on the L-shaped limiting plate, a mounting groove is opened on the fixing boss, a threaded hole is opened on the side wall, a clamping block is arranged in the mounting groove, an adjusting bolt is threadedly connected in the threaded hole, and one end of the adjusting bolt pushes the clamping block to be pressed against the side protective plate.

4. A protective device for energy storage lithium batteries according to claim 3, characterized in that: The side protection plates are distributed at equal intervals along the vertical direction.

5. A protective device for energy storage lithium batteries according to claim 4, characterized in that: The two side walls of the side protection plate are respectively attached to the L-shaped limiting plate and the fixing boss, and the protective top plate, the side protection plate, the pressing block and the side protection plate are all made of rubber material.

6. The protective device for energy storage lithium battery according to claim 1, characterized in that: A third mounting groove is provided at the top of the movable pillar, a fourth mounting groove is distributed around the third mounting groove, a third mounting boss is provided at the bottom of the protective top plate, a fourth mounting boss is distributed around the third mounting boss, the third mounting boss and the fourth mounting boss are respectively provided in the third mounting groove and the fourth mounting groove, and the fastening bolts pass through the protective top plate and the third mounting boss in turn and are threadedly connected to the bottom of the third mounting groove.

7. A protective device for energy storage lithium batteries according to claim 7, characterized in that: The fixed shell and the third mounting boss are respectively located at the middle position of the top of the energy storage box and the protective top plate.

8. The protective device for energy storage lithium battery according to claim 1, characterized in that: There are more than two positioning bosses distributed in a circular array on the side wall of the fixed base, and the top of the energy storage box is provided with a first mounting groove for mounting the fixed base and a second mounting groove for mounting the positioning boss, and the positioning boss is fixed in the second mounting groove by screws.

9. The protective device for energy storage lithium battery according to claim 1, characterized in that: The fixed shell and the installation inner cavity are both cylindrical structures.

10. The protective device for energy storage lithium battery according to claim 1, characterized in that: The heat dissipation holes are distributed in a linear array on the energy storage box, and the heat dissipation holes are in a rectangular structure.

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