CN112018454A - Composite separator for horizontal lead acid battery, horizontal lead acid battery comprising same, and method for assembling same - Google Patents

Abstract

The invention provides a composite separator for a horizontal lead-acid battery, which is a strip-shaped structure consisting of an elastic matrix and an insert wrapped in the elastic matrix, wherein the height of the strip-shaped structure is equivalent to the distance between polar plates of the horizontal lead-acid battery, and the upper end and/or the lower end of the strip-shaped structure are/is provided with glue containing grooves which are communicated from left to right and used for containing sealant; the elastic parent body is made of elastic materials with the elastic modulus of 5-50MPa, and the insert is made of acid-resistant rigid materials with the elastic modulus of more than or equal to 200 MPa. The invention also provides a horizontal lead-acid battery comprising the composite separator and an assembling method thereof. The insert provides rigidity, and the deformation and instability of the insert during assembly and compression are prevented; the elastic matrix and the sealant filled in the glue containing groove can enable lead wires to pass through without damage, gas and liquid between different cells are isolated, efficient sealing between horizontal lead-acid battery cells is achieved, and comprehensive performance of the horizontal lead-acid battery is effectively improved.

Description

Composite separator for horizontal lead acid battery, horizontal lead acid battery comprising same, and method for assembling same

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of storage batteries, in particular to a composite separator for a horizontal lead-acid battery, the horizontal lead-acid battery comprising the composite separator and an assembling method of the horizontal lead-acid battery.

[ background of the invention ]

Lead acid batteries began 1859 Gaston Plante's study of the charging and discharging of Pb electrodes in 10 wt% sulfuric acid solution. In 1881, camile failure applied lead paste, which was a mixture of red lead, sulfuric acid, and water, to lead plates as electrodes, and Ernest Volckmar changed the lead plates to lead grids. The two technologies relieve the lead paste softening and dropping of the positive electrode and the negative electrode of the lead-acid battery, and effectively improve the capacity of the lead-acid battery. The lead-acid battery structure is thus substantially shaped and goes to maturity. After more than 150 years of research and improvement, lead-acid batteries are innovated in the directions of polar plates, additives, separator materials, manufacturing processes and the like. At present, the lead-acid battery yield and the electricity storage amount are still the first of the chemical power sources, and great contribution is being made to the development and progress of the human society. The lead-acid battery has been widely used as a starting power supply for automobiles, an uninterruptible power supply, a power supply and an energy storage power supply for electric bicycles to diesel submarines, and the like, because the lead-acid battery has the advantages of stability, reliability, no memory effect, low price, capability of being made into a single large-capacity battery, and the like.

The basic structure of the traditional lead-acid battery is that positive and negative plates are formed by a grid coated with lead plaster, the positive and negative plates are separated by a diaphragm, the positive and negative plates are welded to corresponding busbars and then connect the battery current with the outside through an electrode post, and a battery cover seals the battery and prevents electrolyte from flowing out. The polar plates of the traditional lead-acid battery are placed in a vertical mode, and an electrolyte stratification phenomenon, namely a polarization phenomenon of electrolyte concentration difference, can occur in the using process, and is one of the main reasons for the reduction of the battery capacity and the shortening of the service life.

In order to solve the above problems, a horizontal lead-acid battery has been developed: the polar plate is in a quasi-bipolar structure, namely, one side of the grid is coated with a positive active material to form a positive plate, and the other side of the grid is coated with a negative active material to form a negative plate; the bipolar plates are separated by a diaphragm, horizontally and alternately stacked according to a certain position (as shown in fig. 1), then a pressure frame is installed and fixed to form a battery module, the battery module is installed in a battery jar, the battery module is sealed after cast welding, and then the battery module is subjected to acid filling and formation to finally manufacture a horizontal battery, for example, as described in U.S. Pat. No. 5409787 applied by american electric company 1993 and U.S. Pat. No. 6074774 applied by 1998.

However, although this kind of horizontal lead-acid battery has solved the electrolyte stratification phenomenon, and internal resistance is little, lightweight, and the series connection between the unit check is directly realized by the lead wire of connecting the bipolar plate, need not the welding (traditional unit check is established ties, and the positive pole that welds an organic whole of leading-out terminal of the first unit and the negative pole that welds an organic whole of following unit lead-out terminal become an organic whole through the welded mode again, realizes the series connection of adjacent unit check), but there is another fatal defect of coming now: liquid channeling or gas channeling (liquid channeling means that electrolyte among different single-cell batteries is communicated to cause short circuit among the single cells, gas channeling means gas of a certain single cell, particularly positive electrode oxygen, lead oxide is synthesized by a negative electrode and spongy lead in a chemical reaction mode, then the lead oxide reacts with sulfuric acid to generate lead sulfate, and the lead sulfate is recharged and reduced to lead, so that the loss of water of the single cell is avoided, but if the single cells are not completely sealed, oxygen generated by the single cell can be channeled to an adjacent single cell to cause water loss of the single cell, and simultaneously, the negative electrode of the adjacent single cell is discharged, so that the self-discharge of the battery is increased, lead wire corrosion is intensified, the grouping consistency is poor, the service life of the battery is greatly influenced, and the factor limiting the application of the horizontal lead-acid battery is also included.

The fundamental method of suppressing blow-by or blow-by between horizontal lead acid battery cells is to solve the problem of sealing between cells, and the provision of separators (or so-called seals, separators, insulators) between cells is a highly feasible solution. CN104160526A discloses in an embodiment a rectangular electrochemical storage device, forming an ion-insulating physical barrier by gasket + spacer + potting compound; CN103208633A discloses a horizontal battery, which is provided with a separator for blocking the electrolyte circulation between the battery electrode groups, wherein the separator is a connecting plastic frame arranged between the stacked positive and negative electrode plates, and the connecting plastic frame and the plastic grid frame are melted together by ultrasonic welding; CN107305966A discloses a modular multi-cell battery, in which each cell is isolated by an isolating material, and each cell boundary of the side and bottom surfaces of the pressure frame is provided with an opening or a groove for injecting the isolating material to form a seal; CN107026287A discloses a method for manufacturing a lead-acid horizontal battery, which seals by matching a partition wall, a sealing member and a filling agent, wherein the filling spaces of a plurality of sealing members are sequentially communicated from top to bottom to form a filling channel.

Although the above-mentioned patents all propose the technical solution of providing the spacers between the cells (corresponding to the battery electrode groups), the thin and dense lead wires between the bipolar plates, and the requirements of the existing assembly process, it is difficult to achieve both the passing and sealing without damage, and the solution of filling the filler through the gap design is very difficult to control in operation, the filler will flow in all directions through the holes or gaps, and cannot be controlled to form the ideal isolation barrier only in the vertical direction, even if it is overfilled. Therefore, although the separator is only a fitting, it is one of the key factors for realizing the industrial production and application of the horizontal lead-acid battery, and it is urgently needed to develop a separator which is convenient to assemble, does not damage the lead wire, has corrosion resistance, and is easy to completely seal and realize gas and liquid isolation and is suitable for the horizontal lead-acid battery.

Based on the above starting points, we developed several spacer structures, such as those disclosed in CN201821685672.0 and CN 201821686118.4. However, horizontal lead acid batteries require a large assembly pressure during assembly, and the above-described separator structures are susceptible to deformation and instability, fail to seal properly, and ultimately fail. Therefore, further improvements are still needed.

[ summary of the invention ]

The invention provides a composite separator for a horizontal lead-acid battery, which has enough elasticity and rigidity, can be used for lead wires to pass through without damage, can also improve the stability and realizes the efficient sealing among the unit cells of the horizontal lead-acid battery.

The technical solution of the invention is as follows:

the composite separator for the horizontal lead-acid battery is characterized in that the separator is a bar-shaped structure consisting of an elastic matrix and an insert wrapped in the elastic matrix, the height of the bar-shaped structure is equal to the distance between polar plates of the horizontal lead-acid battery, and the upper end and/or the lower end of the bar-shaped structure are/is provided with glue containing grooves which are communicated from left to right and used for containing sealant; the elastic parent body is made of elastic materials with the elastic modulus of 5-50MPa, and the insert is made of acid-resistant rigid materials with the elastic modulus of more than or equal to 200 MPa. The insert provides rigidity, and the insert is prevented from deforming and being unstable during assembly and compression; the elastic matrix and the sealant filled in the glue containing groove can enable lead wires to pass through without damage, gas and liquid between different cells are isolated, efficient sealing between horizontal lead-acid battery cells is achieved, and comprehensive performance of the horizontal lead-acid battery is effectively improved.

Furthermore, the insert is a rigid structure with a cross section of a parallelogram, a circle, a polygon, an I shape or a U shape.

Furthermore, the insert is a rigid structure which is inseparable and integrated along the length direction, and the simplest structure is a whole flat plate.

Furthermore, a plurality of sealing grooves with depth shallower than the glue containing groove are arranged at the two sides of the glue containing groove at the upper end and/or the lower end of the elastic parent body. The deep groove and the shallow groove are matched, and after the adhesive tapes are stacked, a plurality of sealed sealing grooves can be formed, so that the adhesive is better prevented from leaking from the side face of the adhesive storage groove during adhesive injection.

Furthermore, the upper end and the lower extreme of above-mentioned elastic matrix are in the both sides of holding gluey groove all are provided with first seal groove and second seal groove, and the degree of depth of second seal groove < first seal groove is < the degree of depth of holding gluey recess, and the width of second seal groove < the width of first seal groove is < the width of holding gluey recess, and the degree of depth is more and more shallow from the centre to both sides, width from the centre to both sides more and more narrow promptly, satisfies the liquid sealed law that glues flow from the centre to both sides, reasonable in design, and is sealed effectual.

Further, the elastic matrix is one or more of silicon rubber, ethylene propylene diene monomer, butadiene rubber, styrene butadiene rubber and isoprene rubber, and the insert is one or more of engineering plastics (ABS, PP, PE, polytetrafluoroethylene, SPS and the like), bakelite, glass fiber reinforced plastic, stainless steel, aluminum alloy, titanium alloy, nickel alloy and carbon fiber.

Further, the elastic parent body and the insert are provided with matched glue injection through holes along the height direction on the same straight line, namely: the elastic parent body and the insert are provided with glue injection through holes so as to realize that liquid sealant flows along the vertical direction, and the glue injection through holes are located at the same X, Y position relative to the bottom plate.

A horizontal lead-acid battery is characterized by comprising the composite separator.

Further, the internal surface of the bottom plate, curb plate, the top cap of above-mentioned horizontal lead acid battery's shell with the position that the separator corresponds all is provided with the separator constant head tank, the elasticity parent with the inserts is provided with the injecting glue through-hole of matched with along direction of height on same straight line, the lateral wall of separator with be provided with between battery case's the lateral wall and supply sealed gluey chamber groove of depositing that glues the flow, after the solidification treatment injecting glue through-hole, hold gluey recess, deposit gluey chamber groove and separator constant head tank and all fill up sealed glue.

The assembling method of the horizontal lead-acid battery comprises the following steps: firstly, the separator, the diaphragm and the battery pole plate are stacked and assembled in the battery shell according to a fixed sequence, the top cover is pressed and self-locked, sealant is injected through the glue injection through hole to fill all the glue injection through holes, the glue containing grooves, the glue storage cavity grooves and the separator positioning grooves, and the assembly is completed after curing.

During injecting glue, sealed glue is injected into by the injecting glue through-hole of bottom, and upwards gushes out, when arriving first layer and holding gluey recess, sealed glue to holding gluey recess and both sides diffusion, the sealed glue that overflows fills up and deposits gluey chamber groove, when first layer holds gluey recess and is full of the back, sealed glue gushes to the second layer, and fill up the second layer and hold gluey recess, analogize with this, hold gluey recess and deposit gluey chamber groove until sealed glue is full of all separators, link into an organic whole with all separators and the lead wire of clamp in the middle of the separator after the solidification of sealed glue.

The invention has the following beneficial effects:

the composite isolating piece can be combined into an isolating wall for isolating horizontal lead-acid battery cells, a basically sealed physical barrier is provided, the elastic matrix can enable lead wires of a polar plate to pass through the combining position without damage, the rigid insert provides enough strength, and the lead wires cannot deform or be unstable under the larger assembly pressure of the horizontal lead-acid battery, so that the high-efficiency sealing and high-efficiency assembly between the horizontal lead-acid battery cells are realized, the problems of liquid leakage or gas leakage between the horizontal lead-acid battery cells are effectively solved, the self-discharge of the horizontal lead-acid battery is reduced, the corrosion of the lead wires is reduced, the grouping consistency of battery cores is improved, and the service performance and the cycle life of the battery are greatly improved; arranging glue containing grooves at the upper end and the lower end of the elastic matrix, injecting liquid sealant through the glue injection through hole in the assembling process, filling reserved and potential gaps by utilizing the liquidity and the adhesiveness of the liquid sealant, and realizing sealing and adhesion after curing; the invention has the advantages of reasonable design, optimized processing technology, high operability, low processing cost, good shock resistance, compression resistance and corrosion resistance, and is beneficial to realizing commercial production and application of the horizontal lead-acid battery.

[ description of the drawings ]

Fig. 1 is a schematic diagram of a battery cell of a conventional horizontal lead-acid battery, wherein 1 is a positive plate, 2 is a negative plate, 3 is a separator, 4 is a cell, and 5 is a lead wire;

fig. 2 is a schematic side view of the composite spacer according to the first embodiment, wherein 107 is an elastic matrix, 108 is an insert, 109 is a glue accommodating groove, 110 is a first sealing groove, and 111 is a second sealing groove;

fig. 3 is a top view of the composite spacer of the first embodiment, wherein 112 is a glue injection through hole;

FIG. 4 is an idealized schematic view of ten composite spacers of example one assembled into an isolation barrier, with 106 composite spacers;

fig. 5 is a schematic side view of the composite spacer according to the second embodiment, wherein 207 is an elastic matrix, 208 is an insert, 209 is a glue receiving groove, and 210 is a first sealing groove;

fig. 6 is a schematic side view of the composite separator according to the third embodiment, wherein 307 is an elastic matrix, 308 is an insert, 309 is a glue accommodating groove, 310 is a first sealing groove, and 311 is a second sealing groove;

fig. 7 is a schematic side view of the composite spacer according to the fourth embodiment, in which 407 is an elastic matrix, 408 is an insert, 409 is a glue accommodating groove, 410 is a first sealing groove, and 411 is a second sealing groove;

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples. The direction description in the invention takes the plane of the polar plate as a horizontal plane and the plane of the battery bottom shell as a reference plane, and the longitudinal direction, the transverse direction and the vertical direction respectively correspond to the length direction, the width direction and the height direction of a certain three-dimensional structure; the lead wire described herein may also be an alloy lead wire or the like, which has the same effect as the lead wire.

A schematic diagram of a battery core of a conventional horizontal lead-acid battery in the prior art is shown in fig. 1, that is, a positive active material is coated on one side of a grid to form a positive plate 1, and a negative active material is coated on the other side of the grid to form a negative plate 2; the positive plate 1 and the negative plate 2 are separated by a diaphragm 3 and are horizontally staggered and stacked according to a certain position; the exposed lead of the grid is the lead wire 5, which plays a role in transmitting current; fig. 1 shows three groups of battery poles, corresponding to three battery cells 4; the positive terminal plate and the negative terminal plate are arranged at the head end and the tail end of the battery core, only one side of the positive terminal plate is coated with positive active substances, the other side of the positive terminal plate is used as the positive output end of the battery core, only one side of the negative terminal plate is coated with negative active substances, and the other side of the negative terminal plate is used as the negative output end of the battery core.

The following examples are not provided to limit the scope of the present invention, nor are the steps described to limit the order of execution, and the directions described are limited to the drawings. Modifications of the invention which are obvious to those skilled in the art in view of the prior art are also within the scope of the invention as claimed.

The composite separator for the horizontal lead-acid battery is characterized in that the separator is a bar-shaped structure consisting of an elastic matrix and an insert wrapped in the elastic matrix, the height of the bar-shaped structure is equal to the distance between polar plates of the horizontal lead-acid battery, and the upper end and/or the lower end of the bar-shaped structure are/is provided with glue containing grooves which are communicated from left to right and used for containing sealant; the elastic parent body is made of elastic materials with the elastic modulus of 5-50MPa, and the insert is made of acid-resistant rigid materials with the elastic modulus of more than 100MPa, such as engineering plastics (ABS, PP, PE, polytetrafluoroethylene, SPS and the like), bakelite, glass fiber reinforced plastic, stainless steel, aluminum alloy, titanium alloy, nickel alloy, carbon fiber and the like. The insert provides rigidity, and the insert is prevented from deforming and being unstable during assembly and compression; the elastic matrix and the sealant filled in the glue containing groove can enable lead wires to pass through without damage, gas and liquid between different cells are isolated, efficient sealing between horizontal lead-acid battery cells is achieved, and comprehensive performance of the horizontal lead-acid battery is effectively improved.

The insert can be in various shapes, such as a rigid structure with a rectangular, square, circular, polygonal, I-shaped or U-shaped cross section, and can be an inseparable whole along the length direction or a plurality of structures which are mutually matched to form a whole.

The injecting glue through-hole of matched with along direction of height is provided with the inserts in the collinear to the elasticity parent, forms the injecting glue through-hole on the compound spacer to realize that liquid sealant flows along vertical direction, make things convenient for the equipment greatly, these injecting glue through-holes are located same X, Y positions for the bottom plate.

The upper end and/or the lower end of the elastic parent body are/is arranged at two sides of the glue containing groove, a plurality of sealing grooves with the depth shallower than the glue containing groove are arranged at two sides of the glue containing groove, and the sealing grooves can be arranged at one end or at two ends. The deep groove and the shallow groove are matched, and after the adhesive tapes are stacked, a plurality of sealed sealing grooves can be formed, so that the adhesive is better prevented from leaking from the side face of the adhesive storage groove during adhesive injection.

A horizontal lead-acid battery is characterized by comprising the composite separator. The internal surface of battery case's bottom plate, curb plate, top cap with the position that the separator corresponds all is provided with the separator constant head tank, the elasticity parent with the inserts is provided with the matched with along the injecting glue through-hole of direction of height on same straight line, the lateral wall of separator with be provided with between battery case's the lateral wall and supply sealed gluey chamber groove of depositing that glues the flow, after the solidification treatment injecting glue through-hole, holding gluey recess, depositing gluey chamber groove and separator constant head tank all fill up sealed glue.

The assembling method of the horizontal lead-acid battery comprises the following steps: firstly, the separator, the diaphragm and the battery pole plate are stacked and assembled in the battery shell according to a fixed sequence, sealant is injected through the glue injection through hole to fill all the glue injection through holes, the glue containing grooves, the glue storage cavity grooves and the separator positioning grooves, curing is carried out, the press mounting top cover is self-locked, and the assembly is completed.

During injecting glue, sealed glue is injected into by the injecting glue through-hole of bottom, and upwards gushes out, when arriving first layer and holding gluey recess, sealed glue to holding gluey recess and both sides diffusion, the sealed glue that overflows fills up and deposits gluey chamber groove, when first layer holds gluey recess and is full of the back, sealed glue gushes to the second layer, and fill up the second layer and hold gluey recess, analogize with this, hold gluey recess and deposit gluey chamber groove until sealed glue is full of all separators, link into an organic whole with all separators and the lead wire of clamp in the middle of the separator after the solidification of sealed glue.

Example one

Composite spacers 106 for horizontal lead-acid batteries, as shown in fig. 2-4, are a bar structure composed of an elastic matrix 107 and inserts 108 wrapped inside the elastic matrix 107, the height of the bar structure is equal to the spacing between the plates of a horizontal lead-acid battery, and lead wires can pass between two adjacent composite spacers 106 without damage. The elastic parent body 107 is made of silicon rubber with the elastic modulus of about 25Mpa, the insert is made of acid-resistant stainless steel rigid materials, and the insert is of a plate-shaped integrated structure with a rectangular cross section.

The upper end and the lower extreme of bar structure all are provided with about link up and are used for holding sealed gluey groove 109 of holding, all be provided with first seal groove 110 and second seal groove 111 in the both sides of holding gluey groove 109, the degree of depth of second seal groove 111 < the degree of depth of first seal groove 110 < hold gluey groove 109, the width of second seal groove 111 < the width of first seal groove 110 < hold gluey groove 109, fig. 4 is the ideal schematic diagram of ten composite barrier 106 equipment assembly isolation barriers, in essence under certain assembly pressure, certain deformation can take place for the elastic matrix 107 that contacts each other.

The elastic matrix 107 and the insert 108 are provided with a matched glue injection through hole 112 along the height direction on the same straight line, that is: the composite spacer 106 is provided with vertically connected glue injection through holes 112 for the liquid sealant to flow.

A horizontal lead-acid battery is characterized in that a plurality of composite isolating pieces 106 are combined with sealant on two sides of a battery cell to form an isolating barrier for lead wires to pass through and effectively solving the problem of liquid channeling and gas channeling.

The assembling method of the horizontal lead-acid battery comprises the following steps: firstly, laminating and assembling the composite separator 106, the diaphragm and the battery plate in the battery shell according to a fixed sequence, self-locking the press-fitting top cover, injecting glue through the glue injection through hole 112 to fill all the glue injection through holes, the glue containing grooves, the glue storage cavity grooves and the separator positioning grooves, and curing; when glue is injected, the sealant is injected from the glue injection through hole at the bottom of the isolation piece and swells upwards, when the sealant reaches the first layer of glue containing groove, the sealant diffuses towards the glue containing groove and two sides of the glue containing groove, after the first layer of glue containing groove is filled, the sealant swells towards the second layer and fills the second layer of glue containing groove, and the like until the sealant fills the glue containing grooves of all the isolation pieces; and curing, wherein the sealant connects all the isolating pieces and the lead wires clamped between the isolating pieces into a whole to form an isolating barrier, and the assembly is completed.

Example two

The composite separator for the horizontal lead-acid battery is shown in a schematic side view in fig. 5, and comprises a bar-shaped structure consisting of an elastic parent body 207 and an insert 208 wrapped inside the elastic parent body 207, wherein the height of the bar-shaped structure is equal to the distance between the polar plates of the horizontal lead-acid battery, and lead wires can pass between two adjacent composite separators without damage. The elastic parent body 207 is made of ethylene propylene diene monomer with the elastic modulus of about 35Mpa, and the insert is made of bakelite rigid material and is of an integrated structure with a U-shaped cross section.

The lower extreme of bar structure is provided with about and link up and is used for the sealed gluey recess 209 of appearance that holds of holding, all is provided with first seal groove 210 in the both sides of holding gluey recess 209, and the degree of depth of first seal groove 210 < the degree of depth of holding gluey recess 209, and the width of first seal groove 210 < the width of holding gluey recess 209. The elastic parent body 207 and the insert 208 are provided with a matched glue injection through hole along the height direction on the same straight line, namely: the composite isolation piece is provided with glue injection through holes which are vertically connected and used for allowing liquid sealant to flow.

EXAMPLE III

The composite separator for the horizontal lead-acid battery is shown in a schematic side view in fig. 6, and comprises a bar-shaped structure consisting of an elastic parent body 307 and an insert 308 wrapped inside the elastic parent body 307, wherein the height of the bar-shaped structure is equal to the distance between the polar plates of the horizontal lead-acid battery, and lead wires can pass between two adjacent composite separators without damage. Wherein, the elastic parent body 307 is made of butadiene rubber with the elastic modulus of about 40Mpa, the insert is made of polytetrafluoroethylene rigid material, and the cross section is of an I-shaped integral structure.

The upper end and the lower extreme of bar structure all are provided with about and link up be used for the sealed gluey recess 309 of appearance that holds of holding, all are provided with first seal groove 310 and second seal groove 311 in the both sides of holding gluey recess 309, and the degree of depth of first seal groove 310 is < to the degree of depth of holding gluey recess 309 for the degree of depth of second seal groove 311 < first seal groove 310, and the width of second seal groove 311 < the width of holding gluey recess 309. The elastic parent body 307 and the insert 308 are provided with matched glue injection through holes along the height direction on the same straight line, that is: the composite isolation piece is provided with glue injection through holes which are vertically connected and used for allowing liquid sealant to flow.

Example four

The composite separator for the horizontal lead-acid battery is shown in a schematic side view in fig. 7, and comprises an elastic parent body 407 and a strip-shaped structure wrapped inside the elastic parent body 407 and formed by an insert 408, wherein the height of the strip-shaped structure is equal to the distance between the polar plates of the horizontal lead-acid battery, and lead wires can pass between two adjacent composite separators without damage. The elastic parent body 407 is made of isoprene rubber with the elastic modulus of about 40Mpa, and the insert is made of SPS rigid material and is of an integral round rod structure.

The lower extreme of bar structure is provided with holds gluey recess 409 of holding that is used for sealed glue that link up about, all is provided with first seal groove 410 and second seal groove 411 in the both sides of holding gluey recess 409, and the degree of depth of first seal groove 410 is < to the degree of depth of holding gluey recess 409 is less than to the degree of depth of second seal groove 411, and the width of first seal groove 410 is < to the width of second seal groove 411 is less than the width of holding gluey recess 409. The elastic parent body 407 and the insert 408 are provided with a matched glue injection through hole along the height direction on the same straight line, that is: the composite isolation piece is provided with glue injection through holes which are vertically connected and used for allowing liquid sealant to flow.

Claims (12)

1. The composite separator for the horizontal lead-acid battery is characterized in that the separator is a bar-shaped structure consisting of an elastic matrix and an insert wrapped in the elastic matrix, the height of the bar-shaped structure is equal to the distance between polar plates of the horizontal lead-acid battery, and the upper end and/or the lower end of the bar-shaped structure are/is provided with glue containing grooves which are communicated from left to right and used for containing sealant; the elastic parent body is made of elastic materials with the elastic modulus of 5-50MPa, and the insert is made of acid-resistant rigid materials with the elastic modulus of more than or equal to 200 MPa.

2. The composite separator for a horizontal lead acid battery of claim 1, wherein said insert is a rigid structure having a cross-section in the shape of a parallelogram, circle, polygon, "I" or "U".

3. The composite separator for a horizontal lead acid battery of claim 1, wherein said insert is a rigid structure that is a non-separable unitary body along its length.

4. The composite separator for a horizontal lead-acid battery according to claim 1, wherein the upper end and/or the lower end of the elastic matrix is provided with a plurality of sealing grooves with depth shallower than the glue containing grooves at both sides of the glue containing groove.

5. The composite separator for a horizontal lead-acid battery according to claim 4, wherein the upper end and the lower end of the elastic parent body are provided with a first sealing groove and a second sealing groove on two sides of the glue containing groove, and the depth of the second sealing groove is less than the depth of the first sealing groove and less than the depth of the glue containing groove.

6. The composite separator for a horizontal lead acid battery of claim 5, wherein the width of the second sealing groove < the width of the first sealing groove < the width of the glue receiving groove.

7. The composite separator for a horizontal lead-acid battery according to claim 1, wherein the elastic matrix is one or more of silicone rubber, ethylene propylene diene monomer rubber, butadiene rubber, styrene butadiene rubber and isoprene rubber, and the insert is one or more of engineering plastics, bakelite, glass fiber reinforced plastic, stainless steel, aluminum alloy, titanium alloy, nickel alloy and carbon fiber.

8. The composite separator for a horizontal lead-acid battery as claimed in claim 1, wherein the elastomer matrix and the insert are provided with matching glue injection through holes along the height direction on the same straight line.

9. A horizontal lead acid battery comprising a composite separator according to any of claims 1 to 7.

10. The horizontal lead-acid battery of claim 9, wherein the inner surfaces of the bottom plate, the side plates, and the top cover of the battery case are provided with spacer positioning grooves at positions corresponding to the spacers, the elastic parent body and the insert are provided with matched glue injection through holes along the height direction on the same line, a glue storage cavity groove for sealant to flow is formed between the side wall of the spacer and the side wall of the battery case, and the glue injection through holes, the glue containing grooves, the glue storage cavity groove, and the spacer positioning grooves after curing are filled with sealant.

11. The method of assembling a horizontal lead acid battery of claim 9, comprising the steps of: firstly, the separator, the diaphragm and the battery pole plate are stacked and assembled in the battery shell according to a fixed sequence, the top cover is pressed and self-locked, sealant is injected through the glue injection through hole to fill all the glue injection through holes, the glue containing grooves, the glue storage cavity grooves and the separator positioning grooves, and the assembly is completed after curing.

12. The assembly method according to claim 10, wherein during the glue injection, the sealant is injected from the bottom through hole and is blown upward, when reaching the first layer of the glue containing groove, the sealant is diffused toward the glue containing groove and both sides thereof, the overflowed sealant fills the glue storage cavity groove, when the first layer of the glue containing groove is filled, the sealant is blown toward the second layer and fills the second layer of the glue containing groove, and so on, until the sealant is filled in the glue containing grooves and the glue storage cavity grooves of all the spacers, and the sealant is cured to connect all the spacers and the lead wires sandwiched between the spacers into a whole.

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