An earthquake-resistant battery and its manufacturing method

Abstract

The present invention provides a seismic-resistant battery and a manufacturing method thereof, belonging to the technical field of batteries. It includes a battery case, a pole group, and a battery cover. The lower end surface of the battery cover is provided with a plurality of first fixing grooves and two second fixing grooves. The circumferential direction of the lower end surface of the battery cover is provided with a sealing groove, and through holes are provided at the bottom of the sealing groove; the first fixing grooves, the second fixing grooves, and the sealing groove are all filled with sealing glue. The sealing glue in the first fixing groove surrounds the top and circumference of the bus bar, the sealing glue in the second fixing groove surrounds the circumference of the pole post, and the sealing glue simultaneously surrounds the circumferences of the ear plates at the upper ends of a plurality of pole groups. The seismic-resistant battery provided by the present invention utilizes the sealing glue to fill the gap between the battery cover and the pole group, and at the same time uses the sealing glue to wrap the bus bar, the pole post, and the ear plate to improve the safety of the key anti-vibration area so as to reduce the vibration of the battery.

Description

Technical Field

[0001] The present invention belongs to the technical field of storage batteries, and more specifically, relates to an earthquake-resistant storage battery and a manufacturing method thereof. Background Art

[0002] At present, for lead-acid storage battery manufacturers, the anti-vibration performance of AGM storage batteries mainly adopts the process of gluing at the bottom of the electrode group, so that the electrode group is adhered to the bottom of the housing.

[0003] By using this method of gluing at the bottom of the electrode group, as an AGM tightly assembled storage battery, due to the different displacements of vibration impacts in the key anti-vibration areas of the plate ear, bus bar and pole connection area, the storage battery will still vibrate. Even if an ABS module is placed on the bus bar at the upper part of the electrode group, due to the elastic properties of the ABS module itself, under the action of strong vibration, the ABS module will produce elastic deformation and still cannot fully ensure the safety of its key anti-vibration area. Summary of the Invention

[0004] The purpose of the present invention is to provide an earthquake-resistant storage battery, aiming to solve the problem that the different displacements of vibration impacts in the key anti-vibration areas of the plate ear, bus bar and pole connection area cause the vibration of the storage battery.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: to provide an earthquake-resistant storage battery, including a storage battery cell, an electrode group and a storage battery cover. The electrode group is installed in the storage battery cell, and the storage battery cover is installed on the top of the storage battery cell;

[0006] The electrode group includes a plurality of electrode groups connected side by side. The upper end of the electrode group is provided with a plurality of bus bars connecting the electrode groups and two pole posts;

[0007] The lower end surface of the storage battery cover is provided with a plurality of first fixing grooves and two second fixing grooves. The circumferential direction of the lower end surface of the storage battery cover is provided with a sealing groove, and through holes are opened at the bottom of the sealing groove;

[0008] A plurality of the bus bars are inserted into the corresponding plurality of first fixing grooves one by one, and the two pole posts are inserted into the two second fixing grooves one by one, and the pole posts penetrate through the corresponding through holes;

[0009] The first fixing grooves, the second fixing grooves and the sealing groove are all filled with sealing glue. The sealing glue in the first fixing groove surrounds the top and circumferential direction of the bus bar. The sealing glue in the second fixing groove surrounds the circumferential direction of the pole post. The sealing glue also surrounds the circumferential direction of the ear plates at the upper ends of the plurality of electrode groups.

[0010] In a possible implementation, a glue-resistant sleeve coaxial with the through hole is provided in the second fixing groove, and the glue-resistant sleeve is sleeved on the outer periphery of the pole column.

[0011] In a possible implementation, the glue-resistant sleeve is integrally formed with the second fixing groove, and the wall thickness of the glue-resistant sleeve is 0.3 - 0.5 mm.

[0012] In a possible implementation, a sealing ring is embedded in the lower part of the through hole.

[0013] In a possible implementation, an identification plate is threadedly installed in the upper part of the through hole, and the middle of the identification plate is provided with an opening.

[0014] In a possible implementation, the upper end of the ear plate of the electrode group is inclined.

[0015] In a possible implementation, the inclination angle of the upper end of the ear plate is ≥16°.

[0016] In a possible implementation, the thickness of the sealant at the top of the bus bar is ≥2 mm, and the thickness of the sealant in the circumferential direction of the bus bar is ≥2.5 mm.

[0017] The beneficial effect of an earthquake-resistant storage battery provided by the present invention is that: compared with the prior art, multiple bus bars of the electrode group are respectively inserted into multiple first fixing grooves of the storage battery cover, and two pole columns of the electrode group are correspondingly inserted into two second fixing grooves of the storage battery cover. Sealant is filled in the first fixing groove, the second fixing groove and the sealing groove of the storage battery cover. The sealant wraps around the top and circumferential direction of the bus bar, wraps around the circumferential direction of the pole column, and at the same time, the sealant wraps around the circumferential direction of the ear plate at the upper end of the electrode group. An earthquake-resistant storage battery provided by the present invention utilizes the sealant to fill the gap between the storage battery cover and the electrode group, and at the same time utilizes the sealant to wrap around the bus bar, the pole column and the ear plate to improve the safety of the key anti-vibration area and reduce the vibration of the storage battery.

[0018] The present invention also provides a manufacturing method of an earthquake-resistant storage battery for the earthquake-resistant storage battery, including the following steps:

[0019] S1: Invert the storage battery cover so that multiple first fixing grooves, two second fixing grooves and the sealing groove on the storage battery cover face upward, and inject sealant into the multiple first fixing grooves, the two second fixing grooves and the sealing groove.

[0020] S2: The electrode group is installed in the battery case and is inverted as a whole. Multiple busbars on the electrode group are correspondingly inserted into multiple first fixing grooves, and two electrode posts are correspondingly inserted into two second fixing grooves and penetrate through the through holes in the second fixing grooves. The sealant wraps the busbars and the electrode posts and also wraps the lug plates of the electrode group; the edge of the battery case is inserted into the sealant in the sealing groove;

[0021] S3: After the sealant is cured at high temperature, the battery case, the electrode group and the battery cover are turned over as a whole.

[0022] In a possible implementation manner, in step S1, a glue-blocking sleeve is arranged in the second fixing groove. When injecting the sealant into the second fixing groove, the glue-blocking sleeve blocks the sealant from flowing out of the through hole; meanwhile, in step S2, the electrode post penetrates through the glue-blocking sleeve and is inserted into the through hole. When the electrode group and the battery cover are assembled in place, the busbar at the electrode post presses and damages the glue-blocking sleeve, so that the sealant is wrapped around the circumference of the electrode post.

[0023] The beneficial effect of the manufacturing method of the anti-seismic battery provided by the present invention is that: compared with the prior art, the battery cover is inverted, and the sealant is injected into multiple first fixing grooves, two second fixing grooves and the sealing groove; the electrode group is installed in the battery case and is inverted as a whole, the busbars are inserted into the first fixing grooves, the electrode posts are inserted into the second fixing grooves and penetrate through the through holes in the second fixing grooves, and the sealant wraps the busbars and the electrode posts and also wraps the lug plates of the electrode group; after the sealant is cured at high temperature, the battery case, the electrode group and the battery cover are turned over as a whole. The manufacturing method of the anti-seismic battery provided by the present invention uses the sealant to wrap the busbars, the electrode posts and the lug plates, improves the safety of the key anti-vibration area, and reduces the vibration of the battery. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the lower end surface of the battery cover provided by the embodiment of the present invention;

[0026] Figure 2 For Figure 1 A sectional view along A-A;

[0027] Figure 3 It is a schematic structural diagram of the identification piece provided by the embodiment of the present invention;

[0028] Figure 4 It is a front view of the electrode group provided by the embodiment of the present invention;

[0029] Figure 5 It is a top view of the electrode group provided by the embodiment of the present invention;

[0030] Figure 6 It is an assembly structure diagram of the storage battery provided by the embodiment of the present invention;

[0031] Figure 7 is Figure 6 a partial enlarged view at position B in

[0032] Figure 8 is Figure 6 a partial enlarged view at position C in

[0033] Explanation of reference numerals:

[0034] 100, storage battery cover; 110, first fixing groove; 120, second fixing groove; 130, sealing groove; 140, through hole; 150, glue blocking sleeve; 160, sealing ring; 170, identification piece; 200, electrode group; 210, bus bar; 220, electrode post; 230, ear plate; 300, storage battery case; 400, sealant. Detailed implementation manners

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Please refer to Figures 1 to 8, a seismic storage battery provided by the present invention will be described. A seismic storage battery includes a battery cell 300, a pole group 200, and a battery cover 100. The pole group 200 is installed in the battery cell 300, and the battery cover 100 is installed on the top of the battery cell 300. The pole group 200 includes a plurality of pole clusters connected in parallel. At the upper end of the pole group 200, there are a plurality of busbars 210 connecting the pole clusters and two pole posts 220. On the lower end face of the battery cover 100, there are a plurality of first fixing grooves 110 and two second fixing grooves 120. A sealing groove 130 is formed in the circumferential direction of the lower end face of the battery cover 100, and a through hole 140 is formed at the bottom of the sealing groove 130. The plurality of busbars 210 are respectively inserted into the plurality of first fixing grooves 110 one by one, and the two pole posts 220 are respectively inserted into the two second fixing grooves 120 one by one, and the pole posts 220 penetrate through the corresponding through holes 140. Sealant 400 is filled in the first fixing grooves 110, the second fixing grooves 120, and the sealing groove 130. The sealant 400 in the first fixing groove 110 surrounds the top and circumference of the busbar 210, the sealant 400 in the second fixing groove 120 surrounds the circumference of the pole post 220, and the sealant 400 also surrounds the circumference of the ear plates 230 at the upper ends of the plurality of pole clusters.

[0037] Compared with the prior art, for the seismic storage battery provided by the present invention, the plurality of busbars 210 of the pole group 200 are respectively inserted into the plurality of first fixing grooves 110 of the battery cover 100, and the two pole posts 220 of the pole group 200 are inserted into the two second fixing grooves 120 of the battery cover 100 correspondingly. Sealant 400 is filled in the first fixing grooves 110, the second fixing grooves 120, and the sealing groove 130 of the battery cover 100. The sealant 400 wraps around the top and circumference of the busbar 210, wraps around the circumference of the pole post 220, and at the same time, the sealant 400 wraps around the circumference of the ear plates 230 at the upper ends of the pole clusters. For the seismic storage battery provided by the present invention, the gap between the battery cover 100 and the pole group 200 is filled with the sealant 400, and the sealant 400 wraps around the busbar 210, the pole post 220, and the ear plates 230, improving the safety of the key anti-vibration areas to reduce the vibration of the storage battery.

[0038] The sealant 400 is an epoxy resin adhesive. In the liquid state, the epoxy resin adhesive is injected into the first fixing grooves 110, the second fixing grooves 120, and the sealing groove 130 of the inverted battery cover 100.

[0039] The upper ends of the inner side walls of the first fixing groove 110, the second fixing groove 120 and the sealing groove 130 are at the same height. The first fixing groove 110, the second fixing groove 120 and the sealing groove 130 are interconnected by openings formed in the groove walls, facilitating the epoxy resin glue injected to completely fill the three grooves. In addition, the height of the outer side wall of the sealing groove 130 is higher than the upper ends of the inner side walls of the first fixing groove 110, the second fixing groove 120 and the sealing groove 130, and the height difference is not less than 3 mm, which can prevent the epoxy resin glue injected into the three grooves from flowing out.

[0040] When injecting epoxy resin glue into the second fixing groove 120, in order to prevent the epoxy resin glue from flowing out through the through hole 140, a glue blocking sleeve 150 is arranged in the second fixing groove 120. The outer diameter of the glue blocking sleeve 150 is larger than the inner diameter of the through hole 140 and is coaxially arranged with the through hole 140, thereby blocking the epoxy resin glue from flowing into the through hole 140. The glue blocking sleeve 150 can be integrally injection-molded with the battery cover 100. Of course, it can also be replaced with inorganic substances, such as a glass tube. Preferably, an annular groove is provided at the bottom of the second fixing groove 120, and the annular groove is adapted to the glue blocking sleeve 150, and the glue blocking sleeve 150 can be placed at the bottom of the second fixing groove 120 by means of the annular groove.

[0041] Preferably, a sealing ring 160 is embedded in the through hole 140. On the side of the sealing ring 160 close to the second fixing groove 120, it can seal the gap between the pole column 220 and the through hole 140, preventing the epoxy resin glue from flowing out from the gap between the two.

[0042] The pole group 200 welds multiple pole groups through a casting and welding mold and is installed in the battery cell 300 at the same time to ensure the structural strength. The pole group 200 and the battery cell 300 are integrally inverted so that the multiple bus bars 210 on the pole group 200 are correspondingly inserted into the multiple first fixing grooves 110, and the two pole columns 220 are correspondingly inserted into the two second fixing grooves 120. At the same time, the edge of the battery cell 300 is inserted into the sealing groove 130.

[0043] When the pole group 200 is inverted and installed into the battery cover 100, the pole column 220 is preferentially inserted into the glue blocking sleeve 150 until the pole column 220 penetrates the through hole 140. As the pole column 220 is continuously inserted into the glue blocking sleeve 150, the bus bar 210 at the lower end of the pole column 220 will abut against the lower port of the glue blocking sleeve 150. At this time, the pole group 200 is not completely installed in place. The pole group 200 continues to move, and the bus bar 210 at the lower end of the pole column 220 will squeeze the glue blocking sleeve 150, so that the glue blocking sleeve 150 is damaged. The wall thickness of the glue blocking sleeve 150 is 0.3 - 0.5 mm, which is a thin-walled and easily damaged tube. After the glue blocking sleeve 150 is damaged, it can no longer block the epoxy resin glue, and the epoxy resin glue can directly wrap around the outer periphery of the pole column 220, improving the sealing effect of the pole column 220.

[0044] When the battery cover 100 is inverted, the terminal post 220 penetrates through the through hole 140. In order to prevent the epoxy resin adhesive from flowing out of the gap between the through hole 140 and the terminal post 220, a sealing ring 160 is embedded in the through hole 140. One side of the sealing ring 160 close to the second fixing groove 120 can seal the gap between the terminal post 220 and the through hole 140.

[0045] The upper part of the through hole 140 has internal threads, and the outer wall of the disc-shaped identification piece 170 is provided with external threads. The identification piece 170 is threadedly installed on the upper part of the through hole 140. Identification pieces 170 with different colors are respectively installed in the two through holes 140. A red identification piece 170 is installed in the through hole 140 for installing the positive terminal post 220, and a black identification piece 170 is installed in the through hole 140 for installing the negative terminal post 220. Different colors are marked on the outer surface of the whole machine. Compared with the prior art, in the way of forming with positive red / negative black epoxy resin adhesive on the upper part of the through hole 140, the way of using threaded connection of the identification piece 170 can save the process of one-time injection molding.

[0046] Preferably, the upper end of the ear plate 230 of the electrode group is inclined. The ear plates 230 are located on both sides of the electrode group. The bus bar 210 is connected to the upper ends of adjacent electrode groups. Both ends of the bus bar 210 are flush with the ear plates 230 respectively. Setting the upper end of the ear plate 230 to an inclined structure can minimize the length of the bus bar 210 as much as possible, facilitate the bus bar 210 to enter the corresponding first fixing groove 110, avoid interfering with the inner wall of the first fixing groove 110, and ensure that the epoxy resin adhesive can completely wrap the bus bar 210. Preferably, the inclination angle V of the upper end of the ear plate 230 ≥ 16°.

[0047] Specifically, the thickness of the sealing glue 400 on the top of the bus bar 210 ≥ 2 mm, and the thickness of the sealing glue 400 in the circumferential direction of the bus bar 210 ≥ 2.5 mm.

[0048] The present invention also provides a manufacturing method of an earthquake-resistant battery for the above-mentioned earthquake-resistant battery, including the following steps:

[0049] S1: Invert the battery cover 100 so that the multiple first fixing grooves 110, two second fixing grooves 120 and the sealing groove 130 on the battery cover 100 face upward, and inject the sealing glue 400 into the multiple first fixing grooves 110, two second fixing grooves 120 and the sealing groove 130;

[0050] S2: The electrode group 200 is installed in the battery case 300 and is inverted as a whole. A plurality of bus bars 210 on the electrode group 200 are correspondingly inserted into a plurality of first fixing grooves 110, and two electrode posts 220 are correspondingly inserted into two second fixing grooves 120 and penetrate through the through holes 140 in the second fixing grooves 120. The sealant 400 wraps the bus bars 210 and the electrode posts 220 and at the same time wraps the lug plates 230 of the electrode group; the edge of the battery case 300 is inserted into the sealant 400 in the sealing groove 130;

[0051] S3: After the sealant 400 is cured at high temperature, the battery case 300, the electrode group 200 and the battery cover 100 are turned over as a whole.

[0052] The battery cover 100 and the electrode group 200 after being inserted into the slot are assembled in an inverted manner. Epoxy resin glue is poured into the first fixing groove 110, the second fixing groove 120 and the sealing groove 130 so that the epoxy resin glue wraps the bus bars 210, the lug plates 230 and the electrode posts 220. Finally, the epoxy resin glue is cured at high temperature.

[0053] Among them, the entire manufacturing process of the battery, that is, the time from welding to sealing completion is not more than 30 minutes, in order to limit the oxidation of the bus bars 210 and the lug plates 230 and improve the molecular adhesion between the epoxy resin glue and lead. The shorter the time, the better the effect of firmness and sealing can be achieved. The entire battery is pushed into the curing furnace to cure the epoxy resin glue at high temperature. After curing, identification plates 170 are threadedly installed on the upper part of the through holes 140 respectively. The identification plate 170 of the positive electrode is red, and the identification plate 170 of the negative electrode is black, replacing the way of forming with epoxy resin glue and saving the process.

[0054] In step S1, a glue blocking sleeve 150 is arranged in the second fixing groove 120. When injecting the sealant 400 into the second fixing groove 120, the glue blocking sleeve 150 blocks the sealant 400 from flowing out of the through hole 140 or blocking the through hole 140.

[0055] In step S2, the electrode post 220 penetrates through the glue blocking sleeve 150 and is inserted into the through hole 140. When the electrode group 200 and the battery cover 100 are assembled in place, the bus bar 210 at the electrode post 220 presses and damages the glue blocking sleeve 150, so that the sealant 400 wraps around the circumference of the electrode post 220.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An earthquake-resistant battery, characterized in that, It includes a battery case (300), a plate group (200), and a battery cover (100). The plate group (200) is installed inside the battery case (300), and the battery cover (100) is installed on the top of the battery case (300). The plate group (200) includes a plurality of plate groups connected side by side. At the upper end of the plate group (200), there are a plurality of bus bars (210) connecting the plate groups and two terminal posts (220). On the lower end face of the battery cover (100), there are a plurality of first fixing grooves (110) and two second fixing grooves (120). A sealing groove (130) is provided circumferentially on the lower end face of the battery cover (100), and a through hole (140) is provided at the bottom of the sealing groove (130). A plurality of the bus bars (210) are inserted into the corresponding plurality of first fixing grooves (110) one by one, and two terminal posts (220) are inserted into the two second fixing grooves (120) one by one, and the terminal posts (220) penetrate through the corresponding through holes (140). Sealing glue (400) is filled in the first fixing grooves (110), the second fixing grooves (120), and the sealing groove (130). The sealing glue (400) in the first fixing grooves (110) surrounds the top and circumference of the bus bars (210). The sealing glue (400) in the second fixing grooves (120) surrounds the circumference of the terminal posts (220). The sealing glue (400) also surrounds the circumference of the lug plates (230) at the upper ends of the plurality of plate groups at the same time. In the second fixing groove (120), there is a glue blocking sleeve (150) coaxially arranged with the through hole (140), and the glue blocking sleeve (150) is sleeved on the outer circumference of the terminal post (220). The upper ends of the lug plates (230) of the plate group are inclined.

2. The seismic energy storage battery according to claim 1, wherein, The glue blocking sleeve (150) is integrally formed with the second fixing groove (120), and the wall thickness of the glue blocking sleeve (150) is 0.3 - 0.5 mm.

3. The earthquake-resistant storage battery according to claim 1, wherein, A sealing ring (160) is embedded in the lower part of the through hole (140).

4. The seismic energy storage battery according to claim 1, characterized in that, An identification plate (170) is threadedly installed in the upper part of the through hole (140), and the middle of the identification plate (170) is provided with an opening.

5. An earthquake-resistant battery as claimed in claim 1, characterized in that, The inclination angle of the upper ends of the lug plates (230) ≥ 16°.

6. The seismic storage battery according to claim 1, wherein, The thickness of the sealing glue (400) at the top of the bus bar (210) ≥ 2 mm, and the thickness of the sealing glue (400) in the circumference of the bus bar (210) ≥ 2.5 mm.

7. A manufacturing method of an earthquake-resistant storage battery, which is used for the earthquake-resistant storage battery described in any one of claims 1-6, characterized in that, It includes the following steps: S1: Invert the battery cover (100) so that the plurality of first fixing grooves (110), the two second fixing grooves (120), and the sealing groove (130) on the battery cover (100) face upwards, and inject the sealing glue (400) into the plurality of first fixing grooves (110), the two second fixing grooves (120), and the sealing groove (130). S2: The electrode group (200) is installed in the battery case (300) and is inverted as a whole. A plurality of busbars (210) on the electrode group (200) are correspondingly inserted into a plurality of first fixing grooves (110). Two electrode terminals (220) are correspondingly inserted into two second fixing grooves (120) and penetrate through the through holes (140) in the second fixing grooves (120). The sealant (400) wraps the busbars (210) and the electrode terminals (220) and simultaneously wraps the ear plates (230) of the electrode group. The edge of the battery case (300) is inserted into the sealant (400) in the sealing groove (130). S3: After the sealant (400) is cured at high temperature, the battery case (300), the electrode group (200), and the battery cover (100) are turned over as a whole.

8. The manufacturing method of an earthquake-resistant battery according to claim 7, characterized in that, In step S1, a glue-blocking sleeve (150) is arranged in the second fixing groove (120). When injecting the sealant (400) into the second fixing groove (120), the glue-blocking sleeve (150) blocks the sealant (400) from flowing out of the through hole (140). At the same time, in step S2, the electrode terminal (220) penetrates through the glue-blocking sleeve (150) and is inserted into the through hole (140). When the electrode group (200) and the battery cover (100) are assembled in place, the busbar (210) at the electrode terminal (220) crushes the glue-blocking sleeve (150), so that the sealant (400) is wrapped around the circumference of the electrode terminal (220).

Images