Lead-acid battery glue injection sealing structure

Abstract

The utility model provides a kind of lead-acid battery glue injection sealing structure, including top cover and shell, interface plate is equipped on shell upper end, top cover is equipped with outer ring plate and inner ring plate, and annular mounting groove is formed at the interval between outer ring plate and inner ring plate, interface plate is inserted in mounting groove, top cover is equipped with with mounting groove communication glue inlet and exhaust overflow glue inlet, sealing ring is installed on the outside of inner ring plate, annular groove is equipped in the inside of interface plate for sealing ring to be attached, outer frame is equipped on shell for outer ring plate to abut, when top cover is installed on shell, sealing ring is clamped into the annular groove in the inside of interface plate under the elastic action of itself, it is beneficial to install top cover in place, sealing between the bottom of mounting groove and shell is completed before glue injection, and top cover is not easy to accidentally separate from shell, glue solution is injected at glue inlet, and observation is carried out at exhaust overflow glue inlet to judge glue injection condition, glue injection amount can be controlled, glue solution waste is reduced, and the effect of improving glue injection sealing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery technology, specifically to a lead-acid battery glue-filling sealing structure. Background Technology

[0002] In the assembly process of lead-acid batteries, it is usually necessary to combine the casing and cover to form a seal. The sealing methods for the battery casing and cover can be divided into thermoforming welding and adhesive bonding. When adhesive bonding is used, an annular groove for holding adhesive is typically cut into the casing or cover. Adhesive is applied into the groove, and then the cover or casing (without the groove) is inserted into the annular groove. After the adhesive solidifies, the casing and cover are bonded together. Since placing the adhesive groove on the casing would increase the battery's overall size, the adhesive groove is usually placed on the cover. In this case, the general procedure for the adhesive sealing process is to inject liquid adhesive into the annular groove of the cover, then invert the battery casing and its internal electrodes, so that the opening of the casing is inserted into the annular groove of the cover. After the adhesive solidifies, the battery can be flipped over again to complete the sealing. This process involves squeezing the adhesive to fill the gap between the annular groove and the opening of the casing. This process is relatively cumbersome and has the following disadvantages:

[0003] When the outer casing begins to press the adhesive into the annular groove, the groove is not yet sealed and remains open. Adhesive is squeezed out of the bonding area and overflows from the bottom of the groove, resulting in waste. The overflowing adhesive remains around the outer casing, increasing the workload of cleaning it later. During the cap-closing process, the cap may not be properly installed, leaving a large gap between the bottom of the cap and the outer casing. This gap can lead to poor sealing after sealing. Furthermore, it is difficult to judge the amount of adhesive applied to the cap, easily resulting in excessive adhesive leading to waste, or insufficient adhesive preventing complete sealing between the cap and the outer casing, also resulting in poor sealing. Therefore, there is an urgent need for a lead-acid battery sealing structure with excellent sealing performance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a glue-filling and sealing structure for lead-acid batteries, thereby solving the problems described above.

[0005] This utility model provides a lead-acid battery glue-filling sealing structure, including a top cover and a shell. An interface plate is arranged around the upper end of the shell. An outer ring plate and an inner ring plate are provided on the top cover. An annular mounting groove is formed at the interval between the outer ring plate and the inner ring plate. The mounting groove is for the interface plate to be inserted. The top cover is provided with a glue inlet and a glue outlet communicating with the mounting groove. A sealing ring is installed on the outer side of the inner ring plate. An annular groove for the sealing ring to fit is provided on the inner side of the interface plate. An outer frame is arranged around the shell for the outer ring plate to abut against.

[0006] Preferably, the length of the inner ring plate in the vertical direction is greater than the length of the outer ring plate.

[0007] Preferably, a first guide slope is provided around the outer periphery of the bottom of the inner ring plate.

[0008] Preferably, the outer ring plate is characterized by having a second guide slope arranged around the inner side of its bottom.

[0009] Preferably, the outer frame is provided with an abutment platform for the second guide slope to fit against.

[0010] Preferably, there is one glue inlet and one glue vent outlet, and the glue inlet and the glue vent outlet are respectively located at the middle of the left and right ends of the upper surface of the top cover.

[0011] Preferably, there are two glue inlets and two glue vent outlets. The two glue inlets are respectively located at the left and right ends of the upper surface of the top cover, and the two glue vent outlets are respectively located at the front and rear ends of the upper surface of the top cover.

[0012] Preferably, it also includes a glue injection tube, the bottom of which is provided with a flexible sealing tube head.

[0013] Preferably, the upper end of the glue inlet is provided with an annular sealing bevel, which is used to abut and fit against the flexible sealing tube head.

[0014] Preferably, the top cover is provided with an adhesive inlet channel and an exhaust channel. The adhesive inlet channel is used to connect the adhesive inlet to the mounting groove, and the exhaust channel is used to connect the exhaust outlet to the mounting groove.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] When installing the top cover on the outer shell, the sealing ring, under its own elasticity, engages with the annular groove on the inner side of the interface plate, facilitating the installation of the top cover. The top cover is less likely to accidentally detach from the outer shell, effectively preventing excessive gaps between the top cover and the outer shell after sealing due to improper installation, thus improving the sealing effect. Furthermore, the sealing between the bottom of the mounting groove and the outer shell is completed before glue injection, preventing glue from overflowing from the bottom of the mounting groove and reducing glue waste. The glue is injected through the glue inlet, and the glue injection status is observed at the vent overflow port, which allows for control of the glue injection amount, reducing glue waste and improving the glue injection sealing effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the external structure of the top cover and outer shell in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the external structure of the glue injection tube, top cover, and outer shell in a certain embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the glue injection tube, top cover, and outer shell in a certain embodiment of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the vent overflow port on the top cover in one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the top cover structure having two glue inlets and two vent overflow outlets in a certain embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of a top cover structure with a single glue inlet and a single glue overflow outlet in one embodiment of the present invention.

[0025] In the diagram, 1-top cover; 11-glue inlet; 111-sealing bevel; 12-venting and overflow outlet; 2-outer shell; 21-outer frame; 22-butt plate; 3-interface plate; 31-annular groove; 4-inner ring plate; 41-sealing ring; 42-first guide bevel; 5-outer ring plate; 51-second guide bevel; 6-mounting groove; 7-glue injection tube; 71-flexible sealing tube head; 8-glue inlet channel; 9-venting channel. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0027] Example 1:

[0028] Reference Figures 1 to 7This utility model provides a lead-acid battery glue-filling sealing structure, including a top cover 1 and a shell 2. An interface plate 3 is arranged around the upper end of the shell 2. An outer ring plate 5 and an inner ring plate 4 are arranged on the top cover 1. An annular mounting groove 6 is formed at the interval between the outer ring plate 5 and the inner ring plate 4. The mounting groove 6 is for the interface plate 3 to be inserted. The top cover 1 is provided with a glue inlet 11 and a glue outlet 12 communicating with the mounting groove 6. A sealing ring 41 is installed on the outer side of the inner ring plate 4. An annular groove 31 for the sealing ring 41 to fit is provided on the inner side of the interface plate 3. An outer frame 21 is arranged around the shell 2 for the outer ring plate 5 to abut.

[0029] When the top cover 1 is installed on the outer shell 2, the sealing ring 41 is engaged in the annular groove 31 on the inner side of the interface plate 3 under its own elasticity, which facilitates the installation of the top cover 1 in place. The top cover 1 is not easy to accidentally detach from the outer shell 2, which can effectively avoid the gap between the top cover 1 and the outer shell 2 after gluing due to improper installation, thus improving the sealing effect. Moreover, the sealing between the bottom of the installation groove 6 and the outer shell 2 is completed before the glue is injected, so that the glue is not easy to overflow from the bottom of the installation groove 6, reducing glue waste. The glue is injected through the glue inlet 11 and the glue injection status is observed at the vent overflow port 12 to judge the glue injection situation, thus controlling the glue injection amount, which has the effect of reducing glue waste and improving glue injection sealing.

[0030] Example 2:

[0031] Reference Figure 3-5 In conjunction with the technical solution of Embodiment 1, in this embodiment, the length of the inner ring plate 4 in the vertical direction is greater than the length of the outer ring plate 5. That is, the inner ring plate 4 extends relative to the outer ring plate 5. Utilizing the structure of the inner ring plate 4 extending relative to the outer ring plate 5, when installing the top cover 1, the inner ring plate 4 first inserts into the interface plate 3, which facilitates guiding the entire installation process of the top cover 1, causing the top cover 1 to move downwards along the inner sidewall of the interface plate 3 towards the outer shell 2, thus playing a guiding installation role.

[0032] Specifically, a first guide slope 42 is provided around the outer periphery of the bottom of the inner ring plate 4.

[0033] By setting a first guide slope 42 around the bottom of the inner ring plate 4, during the process of installing the top cover 1 on the outer shell 2, the inner side of the upper end of the interface plate 3 abuts against the first guide slope 42 and guides the interface plate 3 to be inserted into the mounting groove 6, thus playing a guiding role in the process of the interface plate 3 being inserted into the mounting groove 6.

[0034] Specifically, a second guide slope 51 is provided around the inner side of the bottom of the outer ring plate 5.

[0035] By providing a second guide slope 51 around the inner side of the bottom of the outer ring plate 5, during the process of installing the top cover 1 on the outer shell 2, the second guide slope 51 abuts against the outer side of the upper end of the interface plate 3 and guides the interface plate 3 to be inserted into the mounting groove 6, thus playing a guiding role in the process of inserting the interface plate 3 into the mounting groove 6.

[0036] With the inner ring plate 4 extending relative to the outer ring plate 5, when installing the top cover 1, the inner ring plate 4 first approaches the interface plate 3. The guide slope on the outer side of the inner ring plate 4 abuts against the inner side of the upper end of the interface plate 3 and guides the interface plate 3 to move towards the mounting groove 6. As the interface plate 3 gradually approaches the outer ring plate 5, the second guide slope 51 on the inner side of the outer ring plate 5 abuts against the outer side of the upper end of the interface plate 3 and continues to guide the interface plate 3 into the mounting groove 6. This provides multiple guidance for the process of inserting the interface plate 3 into the mounting groove 6, which is beneficial for the positioning and installation work between the top cover 1 and the outer shell 2.

[0037] Furthermore, an abutment platform 22 is provided around the outer frame 21 for the second guide slope 51 to fit against.

[0038] By providing an abutment platform 22 around the outer frame 21 that abuts against the second guide slope 51, the sealing contact area between the outer ring plate 5 and the outer shell 2 is increased by utilizing the slope fitting structure, thereby further improving its sealing effect.

[0039] Example 3:

[0040] Reference Figure 7 In combination with the technical solutions of Embodiment 1 and Embodiment 2, in this embodiment, there is one glue inlet 11 and one vent overflow 12. The glue inlet 11 and the vent overflow 12 are respectively located at the middle of the left and right ends of the upper surface of the top cover 1.

[0041] Adhesive is injected through the glue inlet 11 at one end of the top cover 1. The adhesive gradually fills the gap between the interface plate 3 and the mounting groove 6 and flows to the vent overflow port 12 at the other end of the top cover 1. The amount of adhesive can be determined by observing the height of the adhesive at the vent overflow port 12. The injection can be stopped when the adhesive overflow port 12 is full, thus controlling the amount of adhesive injected and reducing adhesive waste.

[0042] Example 4:

[0043] Reference Figure 1 , Figure 2 and Figure 6 In conjunction with the technical solutions of Embodiment 1 and Embodiment 2, in this embodiment, there are two glue inlets 11 and two vent overflow outlets 12. The two glue inlets 11 are respectively located at the left and right ends of the upper surface of the top cover 1, and the two vent overflow outlets 12 are respectively located at the front and rear ends of the upper surface of the top cover 1.

[0044] By setting two glue inlets 11, glue can be injected simultaneously from the two glue inlets 11 to improve glue injection efficiency.

[0045] Example 5:

[0046] Reference Figures 1 to 7In conjunction with the technical solutions of embodiments 1-4, this embodiment also includes a glue injection tube 7, and a flexible sealing tube head 71 is provided at the bottom of the glue injection tube 7.

[0047] One end of the dispensing tube 7 is connected to a dispensing device with a pump drive. The dispensing device driven by the pump, in conjunction with the dispensing tube 7, injects adhesive from the dispensing port 11. This is a well-known existing technology and will not be described in detail in this application.

[0048] Specifically, the upper end of the glue inlet 11 is provided with an annular sealing bevel 111, which is used to abut and fit against the flexible sealing tube head 71.

[0049] The sealing bevel 111 makes close contact with the flexible sealing tube head 71, thereby improving the sealing performance between the glue inlet 11 and the glue injection tube 7, making it less likely for the glue in the glue injection tube 7 to leak out. The flexible sealing head is made of rubber.

[0050] Working principle: During the capping process, after the top cover 1 is installed on the outer casing 2, the glue injection tube 7 is pressed down. The flexible sealing head 71 at the end of the glue injection tube 7 tightly engages with the sealing slope 111 at the glue inlet 11 on the top cover 1, maintaining a seal. Then, the pump is started, and the glue enters from the container of the equipment through the pipe, the glue injection tube 7, and the glue inlet 11 into the gap between the mounting groove 6 and the interface plate 3. When the glue overflows to the vent overflow port 12, the pump is stopped, the glue injection tube 7 rises, and the glue injection and capping operation is completed. The glue injection equipment driven by the pump, in conjunction with the glue injection tube 7, injects the glue from the glue inlet 11, which is a known existing technology and will not be elaborated upon in this application. For example, a glue injection machine of model SEL-700HL can be used.

[0051] Specifically, the top cover 1 is provided with an adhesive inlet channel 8 and an exhaust channel 9. The adhesive inlet channel 8 is used to connect the adhesive inlet 11 to the mounting groove 6, and the exhaust channel 9 is used to connect the exhaust overflow port 12 to the mounting groove 6.

[0052] In other embodiments, the amount of extruded adhesive can be measured by a metering device in the system, and the timing of pump stopping can be controlled by the amount of adhesive injected in the system. This method is more convenient for automated production line production.

[0053] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A lead-acid battery encapsulation sealing structure, comprising a top cover and a casing, characterized in that, An interface plate is arranged around the upper end of the outer shell. An outer ring plate and an inner ring plate are provided on the top cover. An annular mounting groove is formed at the interval between the outer ring plate and the inner ring plate. The mounting groove is for the interface plate to be inserted. The top cover is provided with an inlet and an outlet for venting glue that communicate with the mounting groove. A sealing ring is installed on the outer side of the inner ring plate. An annular groove for the sealing ring to fit is provided on the inner side of the interface plate. An outer frame is arranged around the outer shell for the outer ring plate to abut against.

2. The lead-acid battery encapsulation sealing structure according to claim 1, characterized in that, The length of the inner ring plate in the vertical direction is greater than the length of the outer ring plate.

3. The lead-acid battery encapsulation sealing structure according to claim 1, characterized in that, The bottom of the inner ring plate is surrounded by a first guide slope.

4. A lead-acid battery encapsulation sealing structure according to any one of claims 1 or 3, characterized in that, A second guide slope is provided around the inner side of the bottom of the outer ring plate.

5. The lead-acid battery encapsulation sealing structure according to claim 4, characterized in that, The outer frame is surrounded by an abutment platform for the second guide slope to fit against.

6. The lead-acid battery encapsulation sealing structure according to claim 1, characterized in that, The number of glue inlet and glue outlet is one, and the glue inlet and glue outlet are respectively located at the middle of the left and right ends of the upper surface of the top cover.

7. The lead-acid battery encapsulation sealing structure according to claim 1, characterized in that, There are two glue inlets and two glue vent outlets. The two glue inlets are respectively located at the left and right ends of the upper surface of the top cover, and the two glue vent outlets are respectively located at the front and rear ends of the upper surface of the top cover.

8. The lead-acid battery encapsulation sealing structure according to claim 1, characterized in that, It also includes a glue injection tube, the bottom of which is provided with a flexible sealing tube head.

9. The lead-acid battery encapsulation sealing structure according to claim 8, characterized in that, The upper end of the glue inlet is provided with an annular sealing bevel, which is used to abut and fit against the flexible sealing tube head.

10. The lead-acid battery encapsulation sealing structure according to claim 1, characterized in that, The top cover is provided with an adhesive inlet channel and an exhaust channel. The adhesive inlet channel is used to connect the adhesive inlet to the mounting groove, and the exhaust channel is used to connect the exhaust outlet to the mounting groove.

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