Top cover exhaust structure of lead-acid storage battery

Abstract

The utility model discloses a top cover exhaust structure of a lead-acid storage battery, which relates to the technical field of battery top covers, and comprises an upper cover plate, four sides of the upper cover plate are fixedly connected with mounting sleeves, the interiors of the mounting sleeves are rotatably connected with a material changing frame, the interior of the material changing frame is provided with an adjusting cavity, and the adjusting cavity is internally provided with an air inlet. A through hole penetrating to the outside is formed in the end, close to the labyrinth type channel, in the adjusting cavity, a spring groove is formed in the end, away from the through hole, of the adjusting cavity, a spring is fixedly connected into the spring groove, and a square hole penetrating into the adjusting cavity is formed in the material changing frame. According to the top cover exhaust structure of the lead-acid storage battery, the mounting sleeve and the material changing frame component are arranged on the upper cover plate, and the material changing frame can be detached from the mounting sleeve under the condition that the upper cover plate is not detached, so that the filter is replaced, and the condition that the upper cover plate needs to be detached when the filter is replaced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery top covers, and more specifically to a top cover exhaust structure of a lead-acid battery. Background Art

[0002] Lead-acid batteries, also known as secondary batteries, rechargeable batteries or rechargeable batteries, are acid batteries. They use metallic lead as electrodes and manganese dioxide or nickel sulfate as positive active materials. The voltage of lead-acid batteries is 2 volts, so they are also called "batteries". Their function is to convert chemical energy directly into electrical energy. Lead-acid batteries produce gas during charging and discharging. When charging, the acid in the battery decomposes into hydrogen and oxygen, while releasing a certain amount of heat energy. If these gases cannot be discharged from the battery in time, the internal pressure will increase and even cause the battery to explode. Therefore, lead-acid batteries are usually equipped with exhaust holes or exhaust pipes to send the exhausted gas to a safe place.

[0003] A lead-acid battery cover is disclosed in the Chinese utility model patent application number: CN218385360U, which has an upper cover structure, a plurality of fixing holes are arranged on the upper cover, and three to six exhaust holes are arranged horizontally on the side edge of the upper cover, each exhaust hole is connected to the exhaust groove, a filter is arranged on the exhaust groove, and the exhaust hole and the exhaust groove are basically L-shaped; and a plurality of groups of condensation channels are also arranged on the upper cover. The lead-acid battery cover has a filter arranged at the position of the exhaust hole of the battery cover, which can prevent foreign matter from entering the exhaust groove and the battery box through the exhaust hole, and ensure that the exhaust hole is unobstructed. However, after long-term use, the top of the filter is easily blocked by dust and other particles, thereby causing the exhaust hole to be blocked. When the filter is blocked, the internal gas cannot be discharged in time, which will cause the internal pressure to increase, and even cause the battery to explode, which has a safety hazard. Even if it is replaced, the upper cover needs to be disassembled and then operated.

[0004] Therefore, it is necessary to propose a top cover exhaust structure of a lead-acid battery to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to solve the problems raised in the above background technology and provide a top cover exhaust structure of a lead-acid battery.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0009] A top cover exhaust structure of a lead-acid battery comprises an upper cover plate, one side of the upper cover plate is provided with a labyrinth-like passage, the upper cover plate is provided with a plurality of fixing holes penetrating the upper cover plate, four sides of the upper cover plate are provided with filter plates, two sides of the upper cover plate are provided with exhaust grooves, an exhaust pipe connected to the filter plates is fixedly connected in the exhaust groove, four sides of the upper cover plate are fixedly connected with mounting sleeves, the interior of the mounting sleeve is rotatably connected with a material changing rack, an adjustment chamber is provided in the interior of the material changing rack, one end of the adjustment chamber close to the labyrinth-like passage is provided with a through hole penetrating to the outside, the filter plate is located on a side of the adjustment chamber close to the through hole, one end of the adjustment chamber away from the through hole is provided with a spring groove, a spring is fixedly connected in the spring groove, a square hole penetrating into the adjustment chamber is provided on the material changing rack, and the exhaust pipe penetrates the upper cover plate and extends into the adjustment chamber;

[0010] A mounting groove is provided on the inner ring surface of the mounting sleeve, and the mounting groove includes a spiral portion and a vertical portion. The vertical portion is located at one end close to the through hole and does not pass through the mounting sleeve, and the other end of the spiral portion extends out of the mounting sleeve. A moving bead located in the mounting groove is fixedly connected to the outer wall of the material changing rack, and the material changing rack can be installed in the mounting sleeve by moving the moving bead in the mounting groove.

[0011] Preferably, one end of the spring close to the filter is fixedly connected with a pressing ring, and the spring squeezes the filter through the pressing ring to push the filter close to the through hole, and a slope is provided on one side of the pressing ring close to the filter.

[0012] Preferably, a thumb groove is provided at one end of the material changing rack away from the through hole, and the material changing rack, the mounting sleeve and the side of the upper cover plate away from the maze-like passage form a plane.

[0013] Preferably, the square groove is located on a side of the material changing rack away from the exhaust pipe, and the length of the square hole is 0.1-0.3 mm greater than the outer annular surface of the filter plate.

[0014] Preferably, the outer annular surface of the filter plate has the same diameter as that of the adjustment cavity, and the diameter of the through hole is smaller than the diameter of the adjustment cavity.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The device is provided with a mounting sleeve and a material changing rack component on the upper cover plate. The material changing rack can be removed from the mounting sleeve without removing the upper cover plate, so as to replace the filter sheet, avoiding the situation that the upper cover plate needs to be removed to replace the filter sheet, and has the effect of facilitating the replacement of the filter sheet and facilitating use.

[0017] 2. The device is provided with a square hole and a spring component inside the material changing rack. The size of the square hole is slightly larger than the diameter of the filter disc. The filter disc can be replaced after the spring is compressed. At the same time, after replacement, the spring can push the filter disc toward the through hole, thereby blocking the position of the through hole, increasing the sealing during filtration, and facilitating replacement, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a rear perspective cross-sectional schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the upper cover plate and the mounting sleeve in the utility model;

[0021] Figure 4 It is a three-dimensional schematic diagram of the connection structure between the material changing rack and the moving bead in the utility model;

[0022] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the mounting sleeve and the exhaust pipe in the utility model;

[0023] Figure 6 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the installation sleeve and the installation groove in the utility model;

[0024] Figure 7 It is a partial three-dimensional cross-sectional schematic diagram of the connection structure between the material changing rack and the filter sheet in the utility model;

[0025] Figure 8 It is a schematic diagram of the positions of the adjustment cavity and the square hole in the utility model.

[0026] Reference numerals:

[0027] 101. Upper cover plate; 102. Labyrinth passage; 103. Fixing hole; 104. Filter; 105. Exhaust groove; 106. Exhaust pipe; 107. Mounting sleeve; 108. Material changing rack; 109. Adjustment chamber; 110. Through hole; 111. Spring groove; 112. Spring; 113. Square hole; 114. Mounting groove; 115. Spiral part; 116. Vertical part; 117. Moving bead; 118. Pressing ring; 119. Thumb groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-8 A top cover exhaust structure of a lead-acid battery includes an upper cover plate 101. The upper cover plate 101 is only a part of the lead-acid battery, and the other parts are not shown. The upper cover plate 101 is installed on the other components. The fixing holes 103 on the upper cover plate are used for the passage of the battery pole. A labyrinth channel 102 is opened on one side of the upper cover plate 101. The tortuous labyrinth channel 102 can extend the distance from the gas to the filter sheet 104 to prevent the internal acid from spilling. The upper cover plate 101 is provided with a plurality of fixing holes 103 penetrating the upper cover plate 101. The fixing holes 103 are provided on the upper cover plate 101. 3 During assembly, the poles are passed through, corresponding to the number and position of the poles. The four sides of the upper cover plate 101 are provided with filter sheets 104, and the two sides of the upper cover plate 101 are provided with exhaust grooves 105. The exhaust grooves 105 are used to accommodate the exhaust pipe 106, and the exhaust pipe 106 will not extend out of the exhaust grooves 105. The exhaust pipe 106 connected to the filter sheet 104 is fixedly connected in the exhaust grooves 105. The four sides of the upper cover plate 101 are fixedly connected with the mounting sleeves 107. The mounting sleeves 107 are fixed on the upper cover plate 101, and the interior is used for connecting with the replacement The material rack 108 is combined, and the internal rotation of the mounting sleeve 107 is connected to the material rack 108. The material rack 108 is provided with an adjustment chamber 109. The same adjustment chamber 109 is provided with a through hole 110 that penetrates to the outside at one end close to the labyrinth passage 102. The generated gas contacts the filter sheet 104 at the top after passing through the through hole. After being filtered by the filter sheet 104, it enters the adjustment chamber 109 and is discharged through the exhaust pipe 106 on the side wall of the adjustment chamber 109. The filter sheet 104 is located in the adjustment chamber 109 close to the exhaust pipe 106. On one side of the through hole 110, a spring groove 111 is provided at one end of the adjustment cavity 109 away from the through hole 110. When the spring 112 is compressed, it can be received in the spring groove 111. The spring 112 is fixedly connected in the spring groove 111. A square hole 113 is provided on the material changing rack 108 and passes through the adjustment cavity 109. The length of the square hole 113 is 0.1-0.3 mm greater than the outer annular surface of the filter 104, and the height is the same as the thickness of the filter 104. The exhaust pipe 106 passes through the upper cover plate 101 and extends into the adjustment cavity 109.

[0030] A mounting groove 114 is provided on the inner ring surface of the mounting sleeve 107, and the material changing rack 108 can be installed in the mounting sleeve 107 through the mounting groove 114. The mounting groove 114 includes a spiral portion 115 and a vertical portion 116. The vertical portion 116 is located at one end close to the through hole 110 and does not pass through the mounting sleeve 107. The vertical portion 116 can prevent the material changing rack 108 from escaping from the mounting groove 114 when it shakes left and right. The other end of the spiral portion 115 extends out of the mounting sleeve 107. A moving bead 117 located in the mounting groove 114 is fixedly connected to the outer wall of the material changing rack 108. The material changing rack 108 can be installed in the mounting sleeve 107 by the movement of the moving bead 117 in the mounting groove 114. The material changing rack 108 can be installed in the mounting sleeve 107 by the movement of the moving bead 117 in the mounting groove 114.

[0031] Specifically, one end of the spring 112 close to the filter 104 is fixedly connected with a pressing ring 118. When a new filter 104 is installed into the material changing rack 108, the pressing ring 118 is pressed by fingers to push the filter 104 into the adjustment cavity 109. The spring 112 squeezes the filter 104 through the pressing ring 118, pushing the filter 104 close to the through hole 110. The pressing ring 118 has an inclined surface on one side close to the filter 104, which facilitates the installation of the filter 104 into place.

[0032] Specifically, a thumb groove 119 is provided at one end of the material changing rack 108 away from the through hole 110, and the thumb grooves 119 are arranged in two symmetrical shapes to facilitate grasping of the material changing rack 108 by the index finger and thumb. The material changing rack 108, the mounting sleeve 107 and the upper cover plate 101 form a plane on one side away from the maze-like passage 102.

[0033] Specifically, the square hole 113 is located on a side of the material changing rack 108 away from the exhaust pipe 106 . The positions of the square hole 113 and the exhaust pipe 106 are opposite on the outer wall of the material changing rack 108 so that there will be no impact. The length of the square hole 113 is 0.1-0.3 mm greater than the outer ring surface of the filter plate 104 .

[0034] Specifically, the outer annular surface of the filter plate 104 has the same diameter as the adjustment cavity 109 , and the same diameter can prevent gas leakage. The diameter of the through hole 110 is smaller than the diameter of the adjustment cavity 109 .

[0035] In this embodiment, the upper cover plate 101 is installed on the battery assembly (not shown in the figure). The fixing hole 103 on the upper cover plate 101 is used for the battery pole to pass through. The labyrinth channel 102 on the upper cover plate 101 can extend the channel through which the gas passes when gas is generated in the battery, so as to prevent the acid inside the lead-acid battery from spilling out from the air flow channel. Exhaust pipes 106 are installed in the exhaust grooves 105 on both sides of the upper cover plate 101. The exhaust pipe 106 and the filter plate 104 form an air flow channel, so that the generated gas passes through the labyrinth channel 102 and then enters the filter plate 104. After being filtered by the filter plate 104, it will enter the adjustment chamber 109, and then be discharged to the outside through the exhaust pipe 106 connected to the adjustment chamber 109, so as to prevent the situation where the lead-acid battery is expanded due to the internal generation of gas when it is used;

[0036] When the filter 104 needs to be replaced after long-term use, insert your fingers into the symmetrical thumb grooves 119 and use the strength of your fingers to pull the material replacement rack 108 upwards. At this time, the material replacement rack 108 will move upwards, and the moving beads 117 on the outer wall will move upwards to the top along the vertical portion 116. At this time, rotate the material replacement rack 108 so that the moving beads 117 on the outside of the material replacement rack 108 will move into the spiral portion 115 and rotate upwards along the spiral portion 115. Finally, the material replacement rack 108 is detached from the installation sleeve 107, and a new filter 104 is taken out for use. Put your fingers through the through holes at the bottom of the material replacement rack 108 and press the filter 104 upwards, so that the spring 112 at the top of the filter 104 is compressed. When the filter 104 contacts the top of the adjustment chamber 109, the filter 104 can be pulled out from the square hole 113 to replace the new filter 104. When the new filter 104 is inserted, the pressure ring 118 at the bottom of the spring 112 is pressed. At this time, the spring 112 is pressed into the spring groove 111, and the new filter 104 is installed into the adjustment chamber 109 through the square hole 113. The inclined surface at the bottom of the pressure ring 118 facilitates the insertion of the filter 104. After the new filter 104 is inserted, the spring 112 is reset, and the filter 104 is squeezed toward the through hole 110 through the pressure ring 118. The material replacement rack 108 is installed in the installation sleeve 107 in the reverse order of disassembly, thereby completing the replacement of the filter 104.

[0037] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A top cover exhaust structure of a lead-acid battery, comprising an upper cover plate (101), a labyrinth passage (102) is provided on one side of the upper cover plate (101), a plurality of fixing holes (103) penetrating the upper cover plate (101) are provided on the upper cover plate (101), filter plates (104) are provided on four sides of the upper cover plate (101), exhaust grooves (105) are provided on two sides of the upper cover plate (101), an exhaust pipe (106) connected to the filter plate (104) is fixedly connected in the exhaust groove (105), characterized in that: The four sides of the upper cover plate (101) are fixedly connected with mounting sleeves (107), the interior of the mounting sleeve (107) is rotatably connected with a material changing rack (108), an adjustment chamber (109) is provided inside the material changing rack (108), a through hole (110) penetrating to the outside is provided at one end of the adjustment chamber (109) close to the labyrinth passage (102), the filter plate (104) is located on a side of the adjustment chamber (109) close to the through hole (110), a spring groove (111) is provided at one end of the adjustment chamber (109) away from the through hole (110), a spring (112) is fixedly connected to the spring groove (111), a square hole (113) penetrating to the adjustment chamber (109) is provided on the material changing rack (108), and the exhaust pipe (106) penetrates the upper cover plate (101) and extends into the adjustment chamber (109); A mounting groove (114) is provided on the inner annular surface of the mounting sleeve (107), and the mounting groove (114) includes a spiral portion (115) and a vertical portion (116). The vertical portion (116) is located at one end close to the through hole (110) and does not pass through the mounting sleeve (107). The other end of the spiral portion (115) extends out of the mounting sleeve (107). A moving bead (117) located in the mounting groove (114) is fixedly connected to the outer wall of the material changing rack (108). The material changing rack (108) can be installed in the mounting sleeve (107) by moving the moving bead (117) in the mounting groove (114).

2. The top cover exhaust structure of a lead-acid battery according to claim 1, characterized in that: One end of the spring (112) close to the filter plate (104) is fixedly connected to a pressure ring (118); the spring (112) presses the filter plate (104) through the pressure ring (118) to push the filter plate (104) close to the through hole (110); and a slope is provided on one side of the pressure ring (118) close to the filter plate (104).

3. The top cover exhaust structure of a lead-acid battery according to claim 1, characterized in that: A thumb groove (119) is provided at one end of the material changing rack (108) away from the through hole (110), and the material changing rack (108), the mounting sleeve (107) and the side of the upper cover plate (101) away from the labyrinth passage (102) form a plane.

4. The top cover exhaust structure of a lead-acid battery according to claim 1, characterized in that: The square hole (113) is located on a side of the material changing rack (108) away from the exhaust pipe (106), and the length of the square hole (113) is 0.1-0.3 mm greater than the outer annular surface of the filter plate (104).

5. The top cover exhaust structure of a lead-acid battery according to claim 1, characterized in that: The outer annular surface of the filter plate (104) has the same diameter as the adjustment cavity (109), and the diameter of the through hole (110) is smaller than the diameter of the adjustment cavity (109).

Images