Split movable negative pressure cup

Abstract

The utility model relates to a split movable type negative pressure cup which comprises an installation base. A gas flow channel is formed in the axis direction of the suction rod, a gas hole is formed in one end of the suction rod, and the gas flow channel communicates with the gas hole; the spring is used for providing restoring force for sliding of the suction rod; when the suction rod of the negative pressure cup extends into the negative pressure cup, the air hole moves into the cavity of the negative pressure cup, and the air flow channel is communicated with the cavity of the negative pressure cup through the air hole. According to the split movable type negative pressure cup, the suction rod is arranged to be movable, when the lower end of the suction rod is not in contact with a battery, the suction rod cannot be pushed upwards, so that the air flow channel cannot be communicated with the inner cavity of the negative pressure cup through the air hole, and after work is finished, the suction rod moves downwards under the action of elastic restoring force of the spring; the negative pressure cup stops working, so that the negative pressure cup is effectively ensured to work under effective conditions; in addition, the split type structural design is adopted, when part of parts are damaged, only corresponding parts are needed, the whole body does not need to be replaced, and the maintenance cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy battery packs, in particular to a split movable negative pressure cup. Background Art

[0002] The negative pressure cup is an auxiliary device used in the formation equipment during the charging and discharging process of lithium batteries. During the charging and discharging process of square aluminum shell lithium batteries, excess gas and electrolyte bubbles will be generated inside the battery, which will be discharged from the battery filling port. If the gas is directly discharged into the workshop environment, it will directly cause harm to the human body and cause pollution and corrosion to the equipment. In the existing technical solutions, these excess gas and electrolyte are generally discharged by connecting the battery to vacuum negative pressure. The principle is: negative pressure is connected to the battery filling port through the negative pressure cup, and a vacuum is formed inside the battery, and the gas and excess electrolyte bubbles in the battery are drawn out. The electrolyte bubbles condense in the negative pressure cup to form electrolyte and are stored in the negative pressure cup. After the negative pressure formation is completed, under the action of breaking the vacuum and slightly positive pressure, the electrolyte stored in the negative pressure cup is pumped back into the battery again, which plays the role of electrolyte reflux, thereby ensuring that the battery injection volume is consistent with the original.

[0003] When the negative pressure cup is used, it is arranged at intervals on the collection rack, the liquid inlet of the negative pressure cup is connected to each of the lithium batteries arranged at intervals, and the liquid outlet of the negative pressure cup is connected to the bus located on the collection rack. However, during the use of the negative pressure cup of this structure, it was found that it has the following defects:

[0004] 1. Since several negative pressure cups work at the same time, when the number of negative pressure cups on the collection rack is inconsistent with the number of lithium batteries, there is no battery here but the negative pressure cups still work;

[0005] 2. Most of the existing negative pressure cups are integrated as a whole. Therefore, when a negative pressure cup is damaged, it needs to be replaced as a whole, resulting in increased maintenance costs. Utility Model Content

[0006] Therefore, the technical problem to be solved by the utility model is to overcome the existing technology.

[0007] In order to solve the above technical problems, the utility model provides a split movable negative pressure cup, comprising: a mounting seat, which is a fixed support member; a suction rod, which passes through the mounting seat, and the suction rod can slide in the mounting seat along its axial direction, a gas flow channel is provided in the axial direction of the suction rod, and an air hole is provided at one end of the suction rod in the length direction, and the gas flow channel and the air hole are connected; a spring, one end of which is against the mounting seat, and the other end of the spring is against the outer wall of the suction rod, and the spring is used to provide a restoring force for the sliding of the suction rod; a negative pressure cup, which is connected to the suction rod, and the end of the suction rod with the air hole is arranged in the negative pressure cup, when the suction rod is extended into the negative pressure cup, the air hole moves into the cavity of the negative pressure cup, and the gas flow channel is connected with the cavity of the negative pressure cup through the air hole.

[0008] In one embodiment of the utility model, a limiting plate 1 is provided on the outer wall of the suction rod away from the negative pressure cup, and the spring is arranged between the mounting seat and the limiting plate 1.

[0009] In one embodiment of the present invention, the gas flow channel is arranged at the central axis position of the suction rod.

[0010] In one embodiment of the present invention, the air holes are arranged along the radial direction of the suction rod, and the air holes penetrate the outer walls at both ends of the suction rod in the radial direction.

[0011] In one embodiment of the utility model, a second limiting plate is provided on the outer wall of the suction rod, and the second limiting plate can contact the end surface of the mounting seat close to the negative pressure cup.

[0012] In one embodiment of the utility model, a sealing ring installation groove is provided on the outer wall of the cup bottom of the negative pressure cup, a sealing ring is provided in the sealing ring installation groove, one end of the sealing ring is installed in the sealing ring installation groove, and the other end of the sealing ring extends out of the negative pressure cup, and when the limiting plate 2 is in contact and squeezed with the sealing ring 1, the sealing ring 1 is in contact with the outer wall of the suction rod to achieve sealing.

[0013] In one embodiment of the utility model, the end of the suction rod located at the negative pressure cup is connected to a circular mounting plate via a fastener.

[0014] In one embodiment of the utility model, a second sealing ring is connected to the circular mounting plate, and the second sealing ring is sleeved on the end of the suction rod. When the suction rod is retracted from the negative pressure cup, the second sealing ring contacts the bottom of the negative pressure cup to achieve sealing.

[0015] In one embodiment of the present invention, the upper end of the negative pressure cup is an open structure, and a cup cover is provided at the upper opening of the negative pressure cup.

[0016] In one embodiment of the utility model, a joint is provided on the cup cover, the joint is connected to the manifold, and the manifold is communicated with the inner cavity of the negative pressure cup through the joint.

[0017] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0018] The split movable negative pressure cup described in the utility model has a suction rod that is movable. When the lower end of the suction rod is not in contact with the battery, the suction rod will not be pushed upward, so that the gas flow channel cannot be connected with the inner cavity of the negative pressure cup through the air hole. At this time, the negative pressure cup is not working. Only when the suction rod is in contact with the battery, the negative pressure cup will work. After the work is completed, the suction rod moves downward under the action of the elastic restoring force of the spring, and the air hole is blocked. At this time, the negative pressure cup stops working, thereby effectively ensuring that the negative pressure cup works under effective conditions. In addition, the split structural design is adopted. When some parts are damaged, only the corresponding parts need to be replaced, and the whole does not need to be replaced, thus saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0020] Figure 1 This is an assembly diagram of a split movable negative pressure cup in a preferred embodiment of the utility model;

[0021] Figure 2 This is a front view of a split movable negative pressure cup in a preferred embodiment of the utility model;

[0022] Figure 3 In the preferred embodiment of the utility model Figure 2 Sectional view along the AA direction;

[0023] Figure 4 It is a schematic diagram of the partial structure of the split movable negative pressure cup in the preferred embodiment of the utility model.

[0024] Explanation of the reference numerals in the drawings in the specification: mounting seat 1, suction rod 2, gas flow channel 21, air hole 22, limit plate 1 23, limit plate 2 24, spring 3, negative pressure cup 4, sealing ring mounting groove 1 41, sealing ring 1 42, circular mounting plate 5, sealing ring 2 51, cup cover 6, joint 61, manifold 100. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Reference Figure 1-4 As shown, the split movable negative pressure cup of the utility model comprises several main parts: a mounting seat 1, a suction rod 2, a spring 3 and a negative pressure cup 4; the mounting seat 1, which is a fixed support member; the suction rod 2, which passes through the mounting seat 1, and the suction rod 2 can slide in the mounting seat 1 along its axial direction, and a gas flow channel 21 is provided in the axial direction of the suction rod 2, and an air hole 22 is provided at one end of the suction rod 2 in the length direction, and the gas flow channel 21 and the air hole 22 are connected; a spring 3, one end of which is against the mounting seat 1, and the other end of the spring 3 is against the outer wall of the suction rod 2, and the spring 3 is used to provide a restoring force for the suction rod 2 to slide; a negative pressure cup 4, which is connected to the suction rod 2, and one end of the suction rod 2 provided with the air hole 22 is arranged in the negative pressure cup 4, when the suction rod 2 is extended into the negative pressure cup 4, the air hole 22 moves into the cavity of the negative pressure cup 4, and the gas flow channel 21 is connected with the cavity of the negative pressure cup 4 through the air hole 22.

[0027] The mounting seat 1 and the negative pressure cup 4 are both fixed. When the negative pressure cup is not working, the air hole 22 is set opposite to the inner wall at the bottom of the negative pressure cup 4. At this time, the air hole 22 is blocked. When the negative pressure cup is working, the lower end of the suction rod 2 contacts the battery and presses down the negative pressure cup. At this time, the suction rod 2 is pushed into the negative pressure cup 4. Due to the movement of the suction rod 2, one end of the air hole 22 moves into the cavity of the negative pressure cup 4, so that the air hole 22 is placed in the cavity of the negative pressure cup 4, and the gas flow channel 21 is connected with the cavity of the negative pressure cup 4 through the air hole 22 and can continue to work. At this time, the spring 3 is compressed. When the negative pressure cup 4 stops working, the suction rod 2 is separated from the battery, and the suction rod 2 is pulled out of the negative pressure cup 4 under the action of the elastic restoring force of the spring 3, and the air hole 22 returns to being set opposite to the inner wall at the bottom of the negative pressure cup 4. At this time, the gas flow channel 21 and the cavity of the negative pressure cup 4 are cut off.

[0028] In the above structure, a limit plate 1 23 is provided on the outer wall of the suction rod 2 away from the negative pressure cup 4, and the spring 3 is arranged between the mounting seat 1 and the limit plate 1 23. A limit plate 24 is provided on the outer wall of the suction rod 2, and the limit plate 24 can contact the end surface of the mounting seat 1 close to the negative pressure cup 4.

[0029] In the above structure, the suction rod 2 is cylindrical, and the gas flow channel 21 is arranged at the central axis of the suction rod 2. The air hole 22 is arranged along the radial direction of the suction rod 2, and the air hole 22 penetrates the outer wall at both ends of the suction rod 2 in the radial direction. Since the air hole 22 is arranged along the radial direction, the air hole 22 and the gas flow channel 21 are in a vertical relationship.

[0030] In the above structure, a sealing ring installation groove 41 is provided on the outer wall of the bottom of the negative pressure cup 4, a sealing ring 42 is provided in the sealing ring installation groove 41, one end of the sealing ring 42 is installed in the sealing ring installation groove 41, and the other end of the sealing ring 42 extends out of the negative pressure cup 4, and when the limiting plate 24 contacts and squeezes the sealing ring 42, the sealing ring 42 contacts and seals the outer wall of the suction rod 2. The sealing ring 42 is compressed when the suction rod 2 extends into the negative pressure cup 4, and at this time, the sealing ring 42 is pressed tightly against the outer wall of the suction rod 2 to achieve sealing.

[0031] In the above structure, the end of the suction rod 2 located at the negative pressure cup 4 is connected to a circular mounting plate 5 through a fastener. The circular mounting plate 5 is connected to a sealing ring 2 51, and the sealing ring 2 51 is sleeved on the end of the suction rod 2. When the suction rod 2 is retracted from the negative pressure cup 4, the sealing ring 2 51 contacts the bottom of the negative pressure cup 4 to achieve sealing. When the suction rod 2 is pulled out of the negative pressure cup 4, the sealing ring 2 51 is pressed between the circular mounting plate 5 and the bottom of the negative pressure cup 4, and at this time, the sealing ring 2 51 is pressed and fitted with the outer wall of the suction rod 2 to achieve sealing.

[0032] In the above structure, the upper end of the negative pressure cup 4 is an open structure, and the upper end opening of the negative pressure cup 4 is covered with a cup cover 6. The cup cover 6 is provided with a joint 61, and the joint 61 is connected to the manifold 100, and the manifold 100 is connected to the inner cavity of the negative pressure cup 4 through the joint 61.

[0033] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A split movable negative pressure cup, characterized in that: include, A mounting seat, which is a fixed and immovable support member; A suction rod, which passes through the mounting seat and can slide in the mounting seat along its axial direction, a gas flow channel is provided in the axial direction of the suction rod, an air hole is provided at one end of the suction rod in the length direction, and the gas flow channel is connected to the air hole; A spring, one end of which abuts against the mounting seat, and the other end of which abuts against the outer wall of the suction rod, wherein the spring is used to provide a restoring force for the suction rod to slide; The negative pressure cup is connected to a suction rod, wherein one end of the suction rod having an air hole is arranged in the negative pressure cup. When the suction rod is extended into the negative pressure cup, the air hole moves into the cavity of the negative pressure cup, and the gas flow channel is connected with the cavity of the negative pressure cup through the air hole.

2. The split movable negative pressure cup according to claim 1, characterized in that: A limiting plate 1 is provided on the outer wall of the suction rod away from the negative pressure cup, and the spring is arranged between the mounting seat and the limiting plate 1.

3. The split movable negative pressure cup according to claim 1, characterized in that: The gas flow channel is arranged at the central axis position of the suction rod.

4. The split movable negative pressure cup according to claim 3, characterized in that: The air holes are arranged along the radial direction of the suction rod, and the air holes penetrate the outer walls at both ends of the suction rod in the radial direction.

5. The split movable negative pressure cup according to claim 1, characterized in that: A second limiting plate is provided on the outer wall of the suction rod, and the second limiting plate can contact the end surface of the mounting seat close to the negative pressure cup.

6. The split movable negative pressure cup according to claim 5, characterized in that: A sealing ring installation groove 1 is provided on the outer wall of the cup bottom of the negative pressure cup, a sealing ring 1 is provided in the sealing ring installation groove 1, one end of the sealing ring 1 is installed in the sealing ring installation groove 1, and the other end of the sealing ring 1 extends out of the negative pressure cup, and when the limiting plate 2 contacts and squeezes the sealing ring 1, the sealing ring 1 contacts the outer wall of the suction rod to achieve sealing.

7. The split movable negative pressure cup according to claim 1, characterized in that: The end of the suction rod located at the negative pressure cup is connected with a circular mounting plate through a fastener.

8. The split movable negative pressure cup according to claim 7, characterized in that: The circular mounting plate is connected with a second sealing ring, which is sleeved on the end of the suction rod. When the suction rod is retracted from the negative pressure cup, the second sealing ring contacts the bottom of the negative pressure cup to achieve sealing.

9. The split movable negative pressure cup according to claim 1, characterized in that: The upper end of the negative pressure cup is an open structure, and a cup cover is provided at the upper opening of the negative pressure cup.

10. The split movable negative pressure cup according to claim 9, characterized in that: The cup cover is provided with a joint, the joint is connected to the manifold, and the manifold is communicated with the inner cavity of the negative pressure cup through the joint.

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