1E-grade storage battery pole sealing structure

Abstract

The utility model discloses a pole sealing structure of a 1E-grade storage battery, and aims to overcome the defects that the existing pole sealing only adopts a sealing mode of a sealing ring and a single-layer sealant, the sealing is not completed enough on the premise that the sealant has bubbles, air holes and sealant leakage, and the risk of liquid leakage exists. The sealing structure comprises a sealing cover sleeved outside a pole, a sealing cavity arranged between the sealing cover and the pole, and sealant and a sealing ring arranged in the sealing cavity, and is characterized in that a glue sheath is arranged at the root of the pole, a glue accommodating cavity with an open top is arranged between the glue sheath and the pole, the sealant is filled in the glue accommodating cavity, and the sealing cover is embedded on the solidified sealant. Through the sealing mode of multiple layers of sealants, glue leakage protection is achieved, the sealing performance is improved, and the safety requirement of the 1E level is met.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and more specifically, to a 1E-level battery pole sealing structure. Background Art

[0002] A device that converts chemical energy into electrical energy is called a chemical battery, generally referred to as a battery. After discharge, the internal active substances can be regenerated by charging - storing electrical energy as chemical energy; when discharge is required, the chemical energy is converted into electrical energy again. As one of the most important structural parts of the battery, the pole is one of the conductive parts of the battery. It is divided into positive and negative. One part extends to the surface of the battery and is connected to an external cable for customers to charge or discharge. If the pole position is not sealed well, leakage occurs, and sulfuric acid flows out from the inside of the battery. This will cause great safety hazards, such as battery fire and battery short circuit. At the same time, the flowing sulfuric acid will also corrode human skin. Therefore, the sealing of the pole is very important.

[0003] At present, the industry generally only uses sealing rings and sealants to seal battery poles. The main defects of the existing solutions are: the pole sealing method is not perfect, and there is a relatively high risk of pole leakage and leakage. Due to the current conventional sealing method, the risk of acid creep cannot be handled well; and the sealant has bubbles, pores and leakage during the sealing process, which makes the pole sealing incomplete, causing the risk of leakage and failing to meet the 1E level specification requirements. 1E level refers to electrical equipment used for emergency shutdown of reactors, containment isolation, emergency cooling of cores, heat removal from containment, and other electrical equipment mainly used to prevent excessive release of radioactive substances to the environment, including motors, electrical appliances, cables, batteries, chargers, control and protection devices and other types of electrical equipment. All of these electrical equipment will affect the nuclear safety of nuclear power plants when a failure occurs, and they are all safety level, also known as 1E level.

[0004] The purpose of this application is to reduce glue leakage and improve sealing performance through the sealing form of multi-layer sealant, greatly reduce acid leakage of the poles, and meet the safety requirements of Class 1E.

[0005] The Chinese patent announcement number is CN209119258U, and the name is a new pole sealing structure for valve-regulated sealed lead-acid batteries. The application discloses a new pole sealing structure for valve-regulated sealed lead-acid batteries, which includes a lead pole, a U-shaped rubber sealing cap, an outlet pole, and a battery cover. The battery cover is provided with a pole hole and a platform. The pole hole is glued with a U-shaped rubber sealing cap on one side of the battery. The bottom of the U-shaped rubber sealing cap is provided with a through hole. The lead pole extends upward through the U-shaped rubber sealing cap through the through hole and the pole hole from bottom to top. The outlet pole is connected to the lead pole through a lower end connecting plate, and the connecting plate is connected to a fixing nut fixed on the platform by a screw. The pole hole and the platform of the battery cover are filled with sealant. It has a single layer of sealant, which has the risk of leaking glue, resulting in insufficient sealing ability and insufficient risk of liquid leakage. Utility Model Content

[0006] The utility model overcomes the shortcomings of the existing pole sealing that only uses a sealing ring and a single-layer sealant, and the insufficient sealing and the risk of leakage under the premise of bubbles, pores and leakage in the sealant, and provides a 1E-level battery pole sealing structure, which realizes leakage protection and improves the sealing performance through the sealing form of multiple layers of sealant, and meets the safety requirements of 1E level.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A 1E-class battery pole sealing structure comprises a sealing cover sleeved on the pole, a sealing cavity is arranged between the sealing cover and the pole, a sealant and a sealing ring are arranged in the sealing cavity, a rubber sheath is arranged at the root of the pole, a rubber cavity with an open top is arranged between the rubber sheath and the pole, the rubber cavity is filled with sealant, and the sealing cover is embedded in the solidified sealant.

[0009] The existing sealing form includes a sealing cover arranged outside the pole, and the space between the sealing cover and the pole constitutes a sealing cavity filled with sealant and placed with a sealing ring. The sealing ring hoop is installed on the pole to block the creeping liquid, and the sealant also plays the role of sealing and fixing the sealing ring. When the sealant is poured, bubbles, pores and glue leakage are easy to occur. Bubbles and pores are generally improved by adjusting the process and parameters of the injection. As for glue leakage, it refers to the sealant flowing out from the bottom gap of the sealing cavity. Since the amount of glue injected by the machine is similar, glue leakage will cause insufficient amount of sealant in the sealing cavity, resulting in reduced sealing performance. Under the above premise, the present application sets a rubber sheath below the sealing cover, and the rubber sheath is also filled with sealant, realizing a sealing form of multi-layer sealant. Compared with single-layer sealant, multi-layer sealant has better sealing performance and weakens the influence of bubbles and pores on sealing. When the sealing cover leaks, the generated sealant will enter the glue cavity open at the top and continue to play a role. In addition, the sealing cover is embedded in the glue cavity, and the sealing cover can be fixedly connected to the sealant in the glue cavity in a heat-sealed manner. The bottom of the sealing cover has considerable sealing reliability and is not prone to glue leakage. Through the cooperation of the above double-layer sealant, the sealing performance of the pole position is improved, which can better block creeping liquid and eliminate corresponding safety hazards.

[0010] Preferably, the rubber sleeve includes an upper rubber sleeve and a lower rubber sleeve, the rubber sleeve is cylindrical, the lower rubber sleeve and the pole are provided with a gap for the sealant to flow in, the bottom of the rubber sleeve is provided with a sealing flange folded inward, the sealing flange fits the outer edge of the pole, the inner diameter of the upper rubber sleeve gradually decreases from top to bottom, the bottom of the upper rubber sleeve is provided with a horizontal flange folded inward, and the horizontal flange is an integral structure with the lower rubber sleeve. The rubber sleeve can be a rotating body, and the rubber sleeve can be a structure formed by rotating the above shape 360 ​​degrees along the central axis, including the oblique long side corresponding to the upper rubber sleeve, the horizontal side of the corresponding horizontal flange connected to the above oblique long side, the vertical side of the corresponding lower rubber sleeve connected to the horizontal side, and the horizontal side of the corresponding horizontal flange connected to the other end of the vertical side. The above structure is thick at the top and thin at the bottom, the top is open, and the bottom fits tightly with the pole. The structure with thick top and thin bottom is not easy to form bubbles, and the top is open to accommodate the sealing cover. The integral structure is not easy to leak and is also convenient for molding.

[0011] Preferably, the adhesive sheath is a flexible structure, and the flexible adhesive sheath can adapt to the expansion generated during the curing process of the sealant.

[0012] As a preferred embodiment, a fixing piece is also included, the cross section of the fixing piece is "L" shaped, the fixing piece is clamped on the busbar of the battery, and a positioning notch is provided on the fixing piece, and the positioning notch limits the rotation of the rubber sheath. The fixing piece is used to position the rubber sheath and limit its rotation relative to the pole.

[0013] Preferably, the bottom of the sealing cover is provided with an inwardly folded limiting flange, which is used to position the sealing ring. The side wall of the sealing cover and the limiting flange limit the sealing ring. The sealing ring can be tightly matched with the pole or the inner diameter can be larger than the outer diameter of the pole.

[0014] Preferably, a positioning screw sleeve is further included, the outer wall of the positioning screw sleeve is threadedly connected to the inner wall of the sealing cover, an annular projection is provided on the top of the positioning screw sleeve, and the annular projection abuts against the sealing ring. The positioning screw sleeve is fed in the axial direction by the threaded connection with the sealing cover, moves downward by rotation, and is pressed onto the sealing ring by the annular projection, causing the sealing ring to deform so that it extends in the horizontal direction to improve the sealing performance.

[0015] Preferably, the inner wall of the sealing cover is provided with an inwardly protruding step, which abuts against the positioning screw sleeve and limits the height of the annular protrusion. The step limits and indicates the depth of the axial feed of the screw sleeve to avoid under-extrusion or over-extrusion.

[0016] Preferably, the outer ring surface of the pole is provided with grooves, and the electrolyte flows out of the shell along the outer ring surface of the pole through the grooves. The grooves increase the surface area of ​​the pole, increase the path of the electrolyte climbing the pole, increase the difficulty of acid climbing, and reduce the occurrence of acid leakage.

[0017] Preferably, a positioning step is provided on the pole, a heat shrink sleeve is provided on the pole outer shell, and the bottom of the heat shrink sleeve fits the positioning step. The positioning step positions the heat shrink sleeve to locate the height and reduce the deflection during the placement of the heat shrink sleeve.

[0018] Preferably, a lubricant is provided between the annular projection and the sealing ring. During the process of thread sleeve installation, the lubricant prevents excessive friction between the contact surface of the thread sleeve and the sealing ring, which causes the sealing ring to deform and wrinkle, thereby affecting the sealing effect.

[0019] Preferably, part of the heat shrink sleeve is fixedly connected to the sealant in the glue containing cavity, and part of the heat shrink sleeve is fixedly connected to the sealant in the sealing cavity. The pole gradually becomes thicker from top to bottom, the inner wall of the heat shrink sleeve fits the pole, and the outer diameter of the outer wall of the heat shrink sleeve is the same at all places. The heat shrink sleeve is fixed to the sealant in the glue containing cavity and the sealant in the sealing cavity respectively, and double fixing and positioning are performed. Under the premise that the lower part of the heat shrink sleeve is fixed, before the sealant is poured on the upper part, the compression of the heat shrink sleeve by the sealing ring will generate a component force along the top of the pole under the limitation of the shape of the heat shrink sleeve, so that the upper heat shrink sleeve is subjected to an upward force. In this way, when pouring the sealant, it is possible to avoid the internal stress generated by the solidification pushing the heat shrink sleeve downward and destroying the good sealing of the heat shrink sleeve on the pole.

[0020] Preferably, a colored colloid for identifying the positive electrode or the negative electrode is also provided on the top of the sealant in the sealing cavity. Such a structure facilitates identification of the positive and negative electrodes of the pole.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) by providing a second layer of sealant corresponding to the sealant sheath in addition to the existing sealant plus the sealing ring, the leaked sealant of the upper layer can be absorbed, thereby eliminating the defect of reduced sealing performance caused by the leaked sealant; (2) by setting the shape of the pole and the corresponding heat shrink sleeve, the heat shrink sleeve can be reliably fitted on the pole to maintain the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the utility model;

[0023] Figure 2 This is a schematic diagram of the installation of the utility model with the sealing cover omitted;

[0024] Figure 3 It is a bottom view of the positioning screw sleeve of the utility model;

[0025] In the figure:

[0026] Sealing cover 1, sealing cavity 2, sealant 3, sealing ring 4, rubber sleeve 5, rubber containing cavity 6, rubber sleeve upper part 7, rubber sleeve lower part 8, sealing flange 9, horizontal flange 10, fixing part 11, positioning notch 12, bus 13, limiting flange 14, positioning screw sleeve 15, annular protrusion 16, in-position step 17, slot 18, positioning step 19, heat shrink sleeve 20, colored colloid 21, pole 22, convex ridge 23, lubricant 24. DETAILED DESCRIPTION

[0027] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0031] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0032] Example:

[0033] A battery pole 22 sealing structure, such as Figure 1 As shown, from top to bottom, it includes a first sealing structure and a second sealing structure. The first sealing structure includes a sealing cover 1, a sealant 3 and a sealing ring 4 which are sleeved on the outside of the pole 22. A sealing cavity 2 is provided between the sealing cover 1 and the pole 22, and the sealant 3 and the sealing ring 4 are located in the sealing cavity 2. Specifically, a limiting flange 14 folded inward is provided at the bottom of the sealing cover 1, and the limiting flange 14 is used to position the sealing ring 4. The side wall of the sealing cover 1 and the limiting flange 14 limit the sealing ring 4. The sealing ring 4 can be tightly fitted with the pole 22 or the inner diameter can be larger than the outer diameter of the pole 22. The inner edge of the limiting flange 14 fits the pole 22. In some embodiments, the inner edge of the limiting flange 14 is gap-fitted with the pole 22. The sealing ring 4 on the limiting flange 14 also limits the sealant 3 before curing from flowing out of the limiting flange 14.

[0034] In some embodiments, a positioning screw sleeve 15 is also included, the outer wall of the positioning screw sleeve 15 has a thread, and the inner wall of the sealing cover 1 has a thread, and the two are threadedly connected. The top of the positioning screw sleeve 15 is provided with an annular projection 16, and the annular projection 16 abuts the sealing ring 4. The positioning screw sleeve 15 realizes feeding in the axial direction by threaded connection with the sealing cover 1, moves downward by rotation, and is pressed on the sealing ring 4 by the annular projection 16, causing the deformation of the sealing ring 4, so that it extends in the horizontal direction to improve the sealing performance. Among them, the inner wall of the sealing cover 1 is provided with an inwardly protruding step 17, which abuts the positioning screw sleeve 15 and limits the height of the annular projection. The in-place step 17 limits and indicates the depth of the axial feeding of the positioning screw sleeve to avoid the situation of insufficient or excessive extrusion. In order to position the sealing cover 1 and limit its deflection, the sealing cover 1 has a plug, which is inserted into the corresponding concave hole of the top cover of the battery.

[0035] like Figure 3As shown, in some possible embodiments, the side of the annular projection 16 of the positioning screw sleeve 15 facing the sealing ring 4 has a plurality of spiral ridges 23 centered on the central axis of the pole 22. When the positioning screw sleeve 15 rotates and contacts the sealing ring 4, the top of the sealing ring 4 is attached to the side wall of the pole 22 under the action of the ridges 23. When the plurality of ridges 23 rotate with the annular projection 16, corresponding shear loads will be generated and applied to the sealing ring 4, so that the sealing ring 4 generates a plurality of equally spaced bite points on the basis of the deformation caused by the axial pressure applied by the positioning screw sleeve 15. The bite points exert a greater force on the pole than other positions. This structure makes it difficult for the sealing ring to rotate relative to the pole during the rotation of the positioning screw sleeve, so as to avoid the sealing ring driving the contacting heat shrink sleeve to rotate, causing the heat shrink sleeve to be damaged and ineffective.

[0036] In other embodiments, a lubricant 24 is provided between the annular projection and the sealing ring 4. In the process of screw sleeve installation, the lubricant 24 prevents excessive friction between the contact surface of the positioning screw sleeve 15 and the sealing ring 4, causing the sealing ring to deform and wrinkle, thereby affecting the sealing effect. In some embodiments, the lubricant 24 is a lubricant applied to the sealing ring, and the component is liquid dimethyl silicone oil. The sealing ring is placed in a container filled with liquid dimethyl silicone oil for a period of time, and after it is completely soaked, it is taken out and used; in other embodiments, the lubricant 24 is a solid lubricant applied on the annular projection, and the component is talc.

[0037] A rubber sheath 5 is provided at the root of the pole 22, the rubber sheath 5 is located below the sealing cover 1, a rubber cavity 6 with an open top is provided between the rubber sheath 5 and the pole 22, the rubber cavity 6 is filled with sealant 3, and the sealing cover 1 is embedded on the cured sealant 3. Specifically, after the sealant 3 in the sealant cavity 6 is cured, the surface of the sealing cover 1 or the sealant 3 in the sealant cavity 6 is heated, and then the sealing cover 1 is vertically inserted to achieve thermal packaging.

[0038] The rubber sheath 5 includes a rubber sheath upper part 7 and a rubber sheath lower part 8. The rubber sheath 5 is cylindrical. A gap is provided between the rubber sheath lower part 8 and the pole 22 for the sealant 3 to flow in. The bottom of the rubber sheath 5 is provided with a sealing flange 9 folded inwards. The sealing flange 9 fits the outer edge of the pole 22. The inner diameter of the rubber sheath upper part gradually decreases from top to bottom. The bottom of the rubber sheath upper part 7 is provided with a horizontal flange 10 folded inwards. The horizontal flange 10 is an integral structure with the rubber sheath lower part 8. The rubber sheath 5 can be a rotating body. The rubber sheath 5 can be a structure formed by rotating the above shape 360 ​​degrees along the central axis, including the oblique long side corresponding to the rubber sheath upper part 7, the horizontal side corresponding to the horizontal flange 10 connected to the above oblique long side, the vertical side corresponding to the rubber sheath lower part 8 connected to the horizontal side, and the horizontal side corresponding to the horizontal flange 10 connected to the other end of the vertical side. The above structure is thick at the top and thin at the bottom, open at the top, and fits tightly with the pole 22 at the bottom. The structure of thick top and thin bottom is not easy to form bubbles, and the top is open to accommodate the sealing cover 1. The integrated structure is not easy to leak and is also convenient for molding. In some embodiments, the rubber sheath 5 is a flexible structure. The flexible rubber sheath 5 can adapt to the expansion generated during the curing process of the sealant 3.

[0039] The existing sealing form includes a sealing cover 1 arranged outside the pole 22, and the space between the sealing cover 1 and the pole 22 constitutes a sealing cavity 2 filled with sealant 3 and placed with a sealing ring 4. The sealing ring 4 is mounted on the pole 22 to block the creeping liquid, and the sealant 3 also seals and fixes the sealing ring 4. When the sealant 3 is poured in, bubbles, pores and leakage are easily generated. Bubbles and pores are generally improved by adjusting the process and parameters of the injection. As for leakage, it refers to the sealant 3 flowing out from the bottom gap of the sealing cavity 2. Since the amount of machine injection is similar, leakage will cause insufficient amount of sealant 3 in the sealing cavity 2, resulting in reduced sealing performance. Under the above premise, the present application sets a rubber sheath 5 below the sealing cover 1, and the rubber sheath 5 is also filled with sealant 3, realizing the sealing form of multi-layer sealant 3. Compared with the single-layer sealant 3, the multi-layer sealant 3 has better sealing performance, weakening the influence of bubbles and pores on the sealing. When the sealing cover 1 leaks glue, the generated sealant 3 will enter the glue holding cavity 6 opened at the top and continue to work. In addition, the sealing cover 1 is embedded in the glue holding cavity 6, and the sealing cover 1 can be fixedly connected to the sealant 3 in the glue holding cavity 6 in a heat-sealed manner. The bottom of the sealing cover 1 has considerable sealing reliability and is not prone to glue leakage. Through the cooperation of the above-mentioned double-layer sealant 3, the sealing performance of the pole 22 position is improved, which can better block creeping liquid and eliminate corresponding safety hazards.

[0040] like Figure 2As shown, in some embodiments, the rubber sheath 5 and the battery cannot rotate relative to each other, which is achieved as follows: a fixing part 11 is provided, the cross section of the fixing part 11 is "L"-shaped, the fixing part 11 is clamped on the bus 13 of the battery, and a positioning notch 12 is provided on the fixing part 11, and the positioning notch 12 limits the rotation of the rubber sheath 5. The fixing part 11 is used to position the rubber sheath 5 and limit its rotation relative to the pole 22. Among them, the positioning notch 12 limits the rotation of the rubber sheath 5 in a manner including but not limited to the clamping connection between the two, the movable connection through a fastener-like connection, and the friction generated by the positioning notch 12 and the outer edge of the rubber sheath 5. In some optional embodiments, the number of fixing parts 11 is multiple, and they are evenly distributed at the outer edge of the rubber sheath 5, and the distance between adjacent fixing parts 11 is the same. Specifically, the number of fixing parts 11 is 2.

[0041] In some embodiments, the outer annular surface of the pole 22 is provided with a groove 18, and the electrolyte flows out of the shell along the outer annular surface of the pole 22 through the groove 18. The groove 18 increases the surface area of ​​the pole 22, increases the path for the electrolyte to climb the pole 22, increases the difficulty of acid climbing, and reduces the occurrence of acid leakage.

[0042] In some embodiments, a positioning step 19 is provided on the pole 22, and a heat shrink sleeve 20 is provided on the outer cover of the pole 22, and the bottom of the heat shrink sleeve 20 fits the positioning step 19. The positioning step 19 positions the heat shrink sleeve 20, and is used to locate the height and reduce the deflection that occurs during the placement of the heat shrink sleeve 20. Part of the heat shrink sleeve 20 is fixedly connected to the sealant 3 in the glue cavity 6, and part of the heat shrink sleeve 20 is fixedly connected to the sealant 3 in the sealing cavity 2. The pole 22 gradually becomes thicker from top to bottom, and the inner wall of the heat shrink sleeve 20 fits the pole 22, and the outer diameter of the outer wall of the heat shrink sleeve 20 is the same at all places. The heat shrink sleeve 20 is fixed to the sealant 3 in the glue cavity 6 and the sealant 3 in the sealing cavity 2, respectively, for double fixing and positioning. Under the premise that the lower part of the heat shrink sleeve 20 is fixed, before the sealant 3 is poured on the upper part, the sealing ring 4 presses the heat shrink sleeve 20, which will generate a component force along the upper part of the pole 22 under the restriction of the shape of the heat shrink sleeve 20, so that the upper heat shrink sleeve 20 is subjected to an upward force. In this way, when pouring the sealant 3 , it is possible to avoid the internal stress generated by curing pushing the heat shrink sleeve 20 downwards and destroying the good sealing of the heat shrink sleeve 20 on the pole 22 .

[0043] In some embodiments, a colored colloid 21 for identifying the positive or negative pole is further provided on the top of the sealant 3 in the sealed cavity 2 . Such a structure facilitates identification of the positive and negative poles of the pole 22 .

[0044] The whole sealing method is this:

[0045] (1) A heat shrink sleeve 20 is placed on the pole 22 having a groove on the surface, the bottom of the heat shrink sleeve 20 is in contact with the positioning step 19, and then the heat shrink sleeve 20 is heated to cause it to shrink;

[0046] (2) placing the rubber sheath 5 at the bottom of the pole 22, so that the fixing member 11 is fixed on the busbar 13 and the rubber sheath 5 respectively to limit the displacement of the rubber sheath 5;

[0047] (3) Introduce the sealant 3 into the sealant cavity 6 between the sealant sheath 5 and the pole 22 until it exceeds half the height of the sealant cavity 6;

[0048] (4) After the sealant 3 in the sealant cavity 6 is cured, heat-seal the sealing cover 1 on the sealant 3;

[0049] (5) Place the sealing ring 4 on the limiting flange 14 of the sealing cover 1;

[0050] (6) Install the positioning screw sleeve 15 in a threaded form until the step 17 abuts against the positioning screw sleeve 15, causing good deformation of the sealing ring 4 to ensure good sealing of the sealing ring 4;

[0051] (7) Pour the sealant 3 into the sealed cavity 2 formed between the sealing cover 1 and the pole 22, and then pour a layer of colored colloid 21 (usually red and blue) on the surface of the sealant 3 to distinguish the positive and negative poles.

[0052] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A 1E-class battery pole sealing structure, comprising a sealing cover sleeved on the pole, a sealing cavity provided between the sealing cover and the pole, a sealing glue and a sealing ring provided in the sealing cavity, characterized in that: A rubber sheath is arranged at the root of the pole, a rubber cavity with an open top is arranged between the rubber sheath and the pole, the rubber cavity is filled with sealant, and a sealing cover is embedded on the solidified sealant.

2. A 1E-class battery pole sealing structure according to claim 1, characterized in that the glue The sheath comprises a rubber sheath upper part and a rubber sheath lower part. The rubber sheath is cylindrical. A gap is provided between the lower part of the rubber sheath and the pole for sealant to flow in. The bottom of the rubber sheath is provided with an inwardly folded sealing flange. The sealing flange fits the outer edge of the pole. The inner diameter of the rubber sheath upper part gradually decreases from top to bottom. The bottom of the rubber sheath upper part is provided with an inwardly folded horizontal flange. The horizontal flange is an integrated structure with the rubber sheath lower part.

3. A Class 1E battery pole sealing structure according to claim 2, characterized in that: The invention also comprises a fixing piece, the cross section of which is in an "L" shape, the fixing piece is clamped on the busbar of the storage battery, and a positioning notch is arranged on the fixing piece, and the positioning notch limits the rotation of the rubber sheath.

4. The 1E-class battery pole sealing structure according to claim 1, characterized in that: The bottom of the sealing cover is provided with a limiting flange folded inwards, and the limiting flange is used for positioning the sealing ring.

5. The 1E-class battery pole sealing structure according to claim 1, characterized in that: It also includes a positioning screw sleeve, the outer wall of the positioning screw sleeve is threadedly connected to the inner wall of the sealing cover, the top of the positioning screw sleeve is provided with an annular protrusion, the annular protrusion abuts the sealing ring, and the inner wall of the sealing cover is provided with an inwardly protruding step, the step abuts the positioning screw sleeve and limits the height of the annular protrusion.

6. A Class 1E battery pole sealing structure according to claim 5, characterized in that: Lubricant is arranged between the annular projection and the sealing ring.

7. The 1E-class battery pole sealing structure according to claim 1, characterized in that: The outer ring surface of the pole is provided with slots, and the electrolyte passes through the slots when flowing out of the shell along the outer ring surface of the pole.

8. The 1E-class battery pole sealing structure according to claim 1, characterized in that: A positioning step is arranged on the pole, a heat shrink sleeve is arranged on the pole outer sleeve, and the bottom of the heat shrink sleeve fits the positioning step.

9. A Class 1E battery pole sealing structure according to claim 8, characterized in that: Part of the heat shrink sleeve is fixedly connected to the sealant in the seal cavity, and part of the heat shrink sleeve is fixedly connected to the sealant in the sealing cavity. The pole gradually becomes thicker from top to bottom, the inner wall of the heat shrink sleeve fits the pole, and the outer diameter of the outer wall of the heat shrink sleeve is the same at all places.

10. A Class 1E battery pole sealing structure according to any one of claims 1 to 9, characterized in that: The top of the sealant in the sealing cavity is also provided with a colored colloid for identifying the positive electrode or the negative electrode.

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