WO2019150538A1

WO2019150538A1 - Lid for lead storage battery, and lead storage battery

Info

Publication number: WO2019150538A1
Application number: PCT/JP2018/003467
Authority: WO
Inventors: 拓弥及川; 彰秀匂坂; 前田　謙一; 平野　貴之
Original assignee: 日立化成株式会社
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2019-08-08
Also published as: JPWO2019150538A1; JP6981479B2

Abstract

A lid 3 for a lead storage battery 1, said lid having handles 4, 5 attached thereto, is provided with: a first lid section 10 to be attached to a battery case 2; and a second lid section 20, which overlaps the first lid section 10, and forms exhaust chambers D1-D6 between the first lid section 10 and the second lid section 20. The second lid section 20 is provided with a housing section 20a, which is recessed toward the first lid section 10 side, and which houses the handles 4, 5. An exhaust path R provided in the second lid section 20 has an overlapping path section R1 that overlaps the housing section 20a when viewed in the direction in which the first lid section 10 and the second lid section 20 overlap each other. In the first lid section 10, a gas circulation section L is provided at a portion facing the overlapping path section R1.

Description

Lead-acid battery lid and lead-acid battery

The present invention relates to a lead-acid battery lid and a lead-acid battery.

For example, as described in Patent Document 1, there is a lead storage battery mounted on an automobile or the like. Such a lead storage battery is equipped with the battery case which accommodates an electrode group, electrolyte solution, etc., and the lid | cover which closes the opening of a battery case. Moreover, the handle | steering-wheel used when an operator etc. lift a lead storage battery is attached to the lid | cover of a lead storage battery. A concave housing portion is provided on the upper surface of the lid. The lid can accommodate the handle in the accommodating portion.

The lid has a double lid structure including a first lid portion and a second lid portion that is overlaid on the upper surface of the first lid portion. An exhaust chamber is formed between the first lid and the second lid. The accommodating portion described above is formed on the upper surface of the second lid portion. An exhaust passage that guides the gas in the exhaust chamber to the outside is provided on a surface of the second lid portion on the first lid portion side. The 1st cover part and the 2nd cover part are formed with resin, and are mutually joined by heat welding.

JP 2003-338285 A

Here, the thickness of the portion of the second lid where the accommodating portion is provided is thinner than the thickness of the other portion of the second lid. The second lid portion is also provided with an exhaust passage at a portion having a small thickness. That is, the height of the portion of the exhaust passage provided in the portion where the thickness of the second lid portion is thin is low. For this reason, when the 1st cover part and the 2nd cover part are joined by heat welding, it is possible that the exhaust passage is plugged up with the melted resin in the part where the thickness of the 2nd cover part is thin. If the exhaust passage is blocked with resin, the lead-acid battery cannot exhaust gas from the exhaust chamber. For this reason, in this technical field, the lid | cover of a lead storage battery and the lead storage battery which can ensure the discharge path | route of the gas from an exhaust chamber are calculated | required.

A lid of a lead storage battery according to one aspect of the present invention is a lid of a lead storage battery to which a handle is attached, and is overlaid on a first lid part and a first lid part attached to an upper part of a battery case of the lead storage battery, A second lid portion that forms an exhaust chamber between the first lid portion and the second lid portion. The second lid portion is provided with a housing portion that is recessed toward the first lid portion side and accommodates a handle. An exhaust passage for guiding the gas in the exhaust chamber to the outside is provided on the surface of the lid portion on the first lid portion side, and the exhaust passage is viewed along the overlapping direction of the first lid portion and the second lid portion. The first lid portion is provided with a gas circulation portion that extends along the overlap passage portion and circulates gas in a portion facing the overlap passage portion. The overlapping passage portion opens to the first lid portion side, and the gas flow portion opens to the second lid portion side.

In the lid of the lead storage battery, the portion where the second lid portion is provided is thinner than other portions of the second lid portion. The overlapping passage portion in the exhaust passage provided in the second lid portion is provided in a portion where the thickness of the second lid portion is thin. The first lid portion is provided with a gas circulation portion at a portion facing the overlapping passage portion. For this reason, when the first lid portion and the second lid portion are joined by heat welding, even if the overlapping passage portion of the exhaust passage in the second lid portion is blocked with melted resin (partially blocked). Even so, the lead storage battery lid can ensure the circulation of the gas in the exhaust passage through the gas circulation section provided in the first lid section. Therefore, the lead storage battery lid can secure a gas discharge path from the exhaust chamber.

In the lead-acid battery lid, the first lid portion has a main body portion and a wall portion that rises from the main body portion toward the second lid portion side and partitions the exhaust chamber of the first lid portion, and the wall portion is It may be provided at a position facing the surface on the first lid portion side in the accommodating portion and at a position avoiding a portion facing the overlapping passage portion. In this case, even if the lid of the lead storage battery is provided with a wall portion, a portion of the first lid portion that faces the overlapping passage portion can be used as the gas circulation portion.

In the lead-acid battery lid, the first lid portion has a main body portion and a wall portion that rises from the main body portion toward the second lid portion side and partitions the exhaust chamber of the first lid portion, and the wall portion is A notch may be provided at a position facing the surface on the first lid portion side of the housing portion, and a wall portion may be provided with a portion facing the overlapping passage portion. In this case, even if the lid of the lead storage battery is provided with a wall portion, a portion of the first lid portion that faces the overlapping passage portion can be used as the gas circulation portion.

A lead-acid battery according to another aspect of the present invention includes the lead-acid battery lid described above. In this case, the lead storage battery can secure a gas discharge path from the exhaust chamber.

According to various aspects of the present invention, a gas discharge path from the exhaust chamber can be secured.

It is a front view of the lead acid battery concerning an embodiment. It is a top view of the lead acid battery of FIG. It is a top view which shows the lead acid battery of the state from which the handle was removed. It is a top view which shows the lead acid battery of the state from which the 2nd cover part was removed. It is a bottom view of the 2nd lid part. It is sectional drawing around the gas distribution part cut along the VI-VI line of FIG. It is sectional drawing which shows the gas distribution part periphery of the lid | cover of the lead storage battery in a modification.

Hereinafter, an embodiment of a lead storage battery to which the lid of the present invention is applied will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIG. 1 and FIG. 2, the lead storage battery 1 is a liquid lead storage battery. The lead storage battery 1 includes a battery case 2 whose upper surface is open, a lid (lid storage battery lid) 3 for closing the opening of the battery case 2, and handles 4 and 5 attached to the lid 3. The battery case 2, the lid 3, and the

handles

4 and 5 are made of a resin such as polypropylene, for example. A plurality of electrode groups and an electrolytic solution are accommodated in the battery case 2.

The lid 3 has a substantially rectangular shape when viewed from above (see FIG. 2). Hereinafter, for convenience of explanation, as shown in FIG. 2, the longitudinal direction of the lid 3 is defined as the X-axis direction, and the lateral direction of the lid 3 is defined as the Y-axis direction. In the present embodiment, six cell chambers arranged along the X-axis direction are formed inside the battery case 2. An electrode group is disposed in each cell chamber.

The lid 3 has a double lid structure including a first lid portion 10 and a second lid portion 20. The 1st cover part 10 is attached to the upper part of the battery case 2 so that the opening of the battery case 2 of the lead storage battery 1 may be closed. An exhaust chamber constituting portion 100 (see FIGS. 1 and 4) on which the second lid portion 20 is disposed is formed on a part of the first lid portion 10. The exhaust chamber constituting portion 100 extends along the X-axis direction when viewed from above.

The second lid portion 20 is overlapped on the exhaust chamber constituting portion 100 of the first lid portion 10 to form an exhaust chamber between the second lid portion 20 and the first lid portion 10. In the present embodiment, six exhaust chambers D1 to D6 (see FIGS. 4 and 5) are formed between the first lid portion 10 and the second lid portion 20.

The hollow part 11 which protruded upwards is formed in the 1st cover part 10 in the area | region where the 2nd cover part 20 is not provided among the upper surfaces of the 1st cover part 10. As shown in FIG. The protruding portion 11 and the exhaust chamber constituting portion 100 are adjacent to each other in the Y-axis direction. The protrusion 11 is provided with an indicator mounting hole H11. An indicator (not shown) for displaying the liquid level of the electrolyte in the battery case 2 is attached to the indicator attachment hole H11.

In the present embodiment, the height position of the upper surface of the second lid portion 20 and the height position of the upper surface of the protruding portion 11 are substantially the same. That is, the upper surface of the second lid portion 20 and the upper surface of the protruding portion 11 are substantially flush with each other.

The first lid portion 10 is provided with a positive electrode terminal T1 and a negative electrode terminal T2 in a region of the upper surface of the first lid portion 10 where the protruding portion 11 and the exhaust chamber constituting portion 100 are not provided. The positive terminal T1 is provided in the vicinity of one end of the first lid 10 in the X-axis direction. The negative terminal T 2 is provided in the vicinity of the other end of the first lid 10 in the X-axis direction. The protrusion 11 is located between the positive terminal T1 and the negative terminal T2 in the X-axis direction when viewed from above. The electrode groups in the battery case 2 are connected to the positive terminal T1 and the negative terminal T2, respectively.

The

handles

4 and 5 are attached to the lid 3 so as to be rotatable. Specifically, the handle 4 includes an arm part 41, an arm part 42, and a grip part 43. When viewed from above, the

arm portions

41 and 42 sandwich the protruding portion 11 and the exhaust chamber constituting portion 100 (second lid portion 20) in the Y-axis direction. The base end portion of the arm portion 41 is rotatably fitted to a shaft portion P41 that protrudes from the protruding portion 11 in the Y-axis direction. A base end portion of the arm portion 42 is rotatably fitted to a shaft portion P42 (see FIG. 3) protruding from the exhaust chamber constituting portion 100 in the Y-axis direction.

One end portion of the grip portion 43 is attached to the tip portion of the arm portion 41. The other end portion of the grip portion 43 is attached to the distal end portion of the arm portion 42. That is, the handle 4 has a substantially U shape. The shaft portions P41 and P42 are located closer to the positive electrode terminal T1 than the center position of the first lid portion 10 in the X-axis direction when viewed from above.

The handle 5 includes an arm part 51, an arm part 52, and a grip part 53. When viewed from above, the

arm portions

51 and 52 sandwich the projecting portion 11 and the exhaust chamber constituting portion 100 (second lid portion 20) in the Y-axis direction. A base end portion of the arm portion 51 is rotatably fitted to a shaft portion P51 that protrudes from the protruding portion 11 in the Y-axis direction. A base end portion of the arm portion 52 is rotatably fitted to a shaft portion P52 (see FIG. 3) protruding from the exhaust chamber constituting portion 100 in the Y-axis direction.

One end portion of the grip portion 53 is attached to the tip portion of the arm portion 51. The other end portion of the grip portion 53 is attached to the distal end portion of the arm portion 52. That is, the handle 5 has a substantially U shape. The shaft portions P51 and P52 are located closer to the negative electrode terminal T2 than the center position of the first lid portion 10 in the X-axis direction when viewed from above.

The handle 4 is rotatable about the shaft portions P41 and P42. The handle 5 is rotatable about the shaft portions P51 and P52. The

handles

4 and 5 each rotate around an axis along the Y-axis direction. The handle 4 and the handle 5 are arranged side by side in the X-axis direction. The axis of rotation of the handle 4 is parallel to the axis of rotation of the handle 5.

The upper surface of the protruding portion 11 of the first lid portion 10 and the upper surface of the second lid portion 20 accommodate the

grip portions

43 and 53 when the

handles

4 and 5 are tilted as shown in FIGS. Recessed

accommodating portions

11a and 20a (see FIG. 3) are respectively provided. The

accommodating portions

11a and 20a each extend along the Y-axis direction. The

accommodating portions

11a and 20a are located in the central portion of the lid 3 in the X-axis direction. The

handles

4 and 5 are attached to the lid 3 so that when the

handles

4 and 5 are tilted, the grip portion 43 of the handle 4 and the grip portion 53 of the handle 5 are aligned in the X-axis direction.

Next, details of the exhaust chambers D1 to D6 formed in the lid 3 will be described. As shown in FIG. 4, the exhaust chamber constituting portion 100 of the first lid portion 10 includes a peripheral wall portion 110 that rises upward from the upper surface of the plate-like main body portion 101 that covers the opening of the battery case 2, and the main body portion. Partition walls 111 to 115 rising upward from the upper surface of 101 are provided. The peripheral wall portion 110 extends along the outer peripheral edge of the exhaust chamber constituting portion 100. The partition walls 111 to 115 are respectively provided in the peripheral wall 110 and extend along the Y-axis direction. The partition walls 111 to 115 divide the space surrounded by the peripheral wall 110 into six.

As shown in FIG. 5, the second lid portion 20 has the same contour shape as that of the exhaust chamber constituting portion 100. The second lid 20 includes a plate-like main body 201 that is stacked on the upper surface of the exhaust chamber component 100, a peripheral wall 210 that rises downward from the lower surface of the main body 201, and a lower surface from the lower surface of the main body 201. Rising partition walls 211 to 215 are provided. The peripheral wall portion 210 extends along the outer peripheral edge of the main body portion 201. The partition portions 211 to 215 are provided in the peripheral wall portion 210, respectively, and extend along the Y-axis direction. The partition walls 211 to 215 partition the space surrounded by the peripheral wall 210 into six. In the example shown in FIG. 5, an outer wall portion 220 that surrounds the outer side of the peripheral wall portion 210 is provided on the lower surface of the main body portion 201.

The pattern of the peripheral wall portion 110 and the partition wall portions 111 to 115 provided in the exhaust chamber constituting portion 100 and the pattern of the peripheral wall portion 210 and the partition wall portions 211 to 215 provided in the second lid portion 20 have a mirror image relationship. ing. The upper surface of the exhaust chamber constituting portion 100 and the lower surface of the second lid portion 20 are joined by thermal welding. Thus, exhaust chambers D1 to D6 are formed between the exhaust chamber constituting portion 100 and the second lid portion 20. The exhaust chambers D1 to D6 have a function of accumulating mist of the electrolytic solution generated from each cell chamber in the battery case 2 and refluxing the electrolytic solution liquefied in the exhaust chambers D1 to D6 into the cell chamber.

More specifically, the exhaust chambers D1 to D6 are respectively located above the six cell chambers provided in the battery case 2. The exhaust chambers D1 to D6 are each provided with a reflux hole H that passes through the main body 101 serving as a bottom plate of the exhaust chambers D1 to D6. The exhaust chambers D1 to D6 are respectively connected to the six cell chambers of the battery case 2 through the reflux holes H provided in the exhaust chambers D1 to D6. A plurality of obstacle walls W are provided in the exhaust chambers D1 to D6. The obstacle wall W changes the traveling direction of the electrolytic solution mist so that the electrolytic solution mist entering from the reflux holes H meanders and advances in the exhaust chambers D1 to D6. The obstacle wall W is provided in the exhaust chamber constituting part 100 and the second lid part 20. The upper surface of the main body 101 serving as the bottom plate of the exhaust chambers D1 to D6 is inclined so as to gradually become lower toward the reflux hole H in each of the exhaust chambers D1 to D6.

As a result, the mist of the electrolyte discharged from the reflux holes H of the exhaust chambers D1 to D6 into the exhaust chambers D1 to D6 is liquefied by touching the obstacle walls W and the like, and then the bottom surfaces of the exhaust chambers D1 to D6. It returns to the return holes H of the exhaust chambers D1 to D6 through (the upper surface of the main body 101).

Further, the exhaust chambers D1 to D6 are respectively provided with electrolyte solution inlets C penetrating through the main body 101 serving as bottom plates of the exhaust chambers D1 to D6. In a state before the second lid portion 20 is joined to the exhaust chamber constituting portion 100, the electrolyte is supplied into each cell chamber of the battery case 2 through the electrolyte inlet C provided in each of the exhaust chambers D1 to D6. Injected. The exhaust chamber constituting portion 100 is provided with an annular wall W1 so as to surround the edge of the electrolyte injection port C. The second lid portion 20 is provided with an annular wall W1 at a position facing the annular wall W1 of the exhaust chamber constituting portion 100.

In this embodiment, as shown in FIG. 4, each reflux hole H is provided in the vicinity of the center position of the first lid portion 10 in the Y-axis direction when viewed from above. That is, each of the reflux holes H is provided in the vicinity of the end portion on the side where the protruding portion 11 is provided in the Y-axis direction in each of the exhaust chambers D1 to D6. Each electrolyte solution inlet C is provided in the vicinity of the end opposite to the end on the side where the reflux hole H is provided in the Y-axis direction in each of the exhaust chambers D1 to D6.

The peripheral wall portion 110, the partition walls 111 to 115, the obstacle wall W, and the leading end portions of the annular wall W1 provided in the exhaust chamber constituting portion 100 are located substantially on the same plane. Similarly, the peripheral wall portion 210, the partition walls 211 to 215, the obstacle wall W, and the tip end portion of the annular wall W1 provided in the second lid portion 20 are located on substantially the same plane.

As shown in FIG. 5, an exhaust passage R that guides the gases in the exhaust chambers D1 to D6 to the outside is provided on the lower surface of the second lid 20 (the surface on the first lid 10 side). 5 and 6, the exhaust passage R is indicated by a broken line. The exhaust passage R is adjacent to the end of the exhaust chambers D1 to D6 on the side where the annular wall W1 is provided. In the present embodiment, no wall portion is provided between the exhaust passage R and the exhaust chambers D1 to D6. The exhaust passage R communicates with the exhaust chambers D1 to D6, and exhausts the gases in the exhaust chambers D1 to D6 to the outside.

More specifically, each of the partition walls 211 to 215 rising from the main body 201 is in contact with the inner surface of the peripheral wall 210 at the end where the reflux hole H (projection 11) is provided in the Y-axis direction. The other end in the direction (the side on which the electrolyte injection port C is provided) is separated from the inner surface of the peripheral wall 210 by a predetermined distance. The exhaust passage R passes through the gap between the other end of the partition wall portions 211 to 215 and the peripheral wall portion 210 and communicates with the exhaust chambers D1 to D6. That is, the exhaust passage R is formed by a part of the inner side surface of the peripheral wall part 210 and a part of the lower surface of the main body part 201. The exhaust passage R is open to the exhaust chamber constituting portion 100 (first lid portion 10) side.

At both ends of the second lid 20 in the X-axis direction, there are provided an exhaust port H1 communicating with the exhaust chamber D1 and the outside, and an exhaust port H6 communicating with the exhaust chamber D6 and the outside, respectively. The gas that has flowed into the exhaust chambers D1 to D6 through the reflux holes H passes through the exhaust passage R and is discharged from the exhaust port H1 or H6 to the outside of the lid 3. Depending on the installation location of the lead storage battery 1, one of the exhaust ports H1 and H6 may be closed and only the other exhaust port may be used. Explosion-proof filters may be provided at the exhaust ports H1 and H6.

As described above, the housing part 20a is provided on the upper surface of the second lid part 20 as shown in FIGS. The accommodating part 20a is formed by the body part 201 of the second lid part 20 being recessed toward the exhaust chamber constituting part 100 (first lid part 10). That is, in the second lid part 20, the thickness of the part where the accommodating part 20a is provided is thinner than the other parts. Note that, as shown in FIG. 5, a portion where the accommodating portion 20 a is provided on the lower surface of the main body portion 201 of the second lid portion 20 is referred to as “accommodating portion lower surface 201 a”. That is, the accommodating part lower surface 201a is a surface on the first lid part 10 side in the accommodating part 20a.

As shown in FIGS. 5 and 6, the exhaust passage R has a portion that overlaps the accommodating portion 20 a when viewed along the overlapping direction (vertical direction) of the first lid portion 10 and the second lid portion 20. Have. Note that a portion of the exhaust passage R that overlaps the housing portion 20a when viewed along the overlapping direction of the first lid portion 10 and the second lid portion 20 is referred to as an “overlap passage portion R1”. In other words, the overlapping passage portion R1 crosses the housing portion lower surface 201a. The overlapping passage portion R1 is open to the exhaust chamber constituting portion 100 side. Of the lower surface of the main body 201, the housing lower surface 201a is located closer to the first lid 10 than the other parts by providing the housing 20a. That is, in the exhaust passage R, the overlapping passage portion R1 has a lower passage height than other portions of the exhaust passage R.

Further, in the present embodiment, as shown in FIG. 5, a partition wall 213 is provided on the housing lower surface 201 a. The partition wall 213 partitions the exhaust chamber formed between the exhaust chamber constituting unit 100 and the second lid 20 into an exhaust chamber D3 and an exhaust chamber D4.

As shown in FIGS. 4 and 6, in the exhaust chamber constituting unit 100, the gas extends through the overlapping passage portion R 1 and flows through the portion facing the overlapping passage portion R 1 of the second lid portion 20. A gas circulation part L is provided. In FIG.4 and FIG.6, the gas distribution part L is shown with the broken line. The gas circulation part L is formed by a part of the inner side surface of the peripheral wall part 110 and a part of the upper surface of the main body part 101. The gas circulation part L is open to the second lid part 20 side. As shown in FIG. 6, the gas flow part L and the overlapping passage part R1 are arranged in the vertical direction. The gas circulation part L and the overlapping passage part R1 communicate with each other in the vertical direction.

The partition wall (wall) 113 partitions an exhaust chamber formed between the exhaust chamber constituting unit 100 and the second lid 20 into an exhaust chamber D3 and an exhaust chamber D4. The partition wall 113 has a first wall 113a and a second wall 113b. The first wall 113a extends along the Y-axis direction. The first wall portion 113 a faces the partition wall portion 213 of the second lid portion 20. The end of the first wall 113a on the protruding portion 11 side is in contact with the inner surface of the peripheral wall 110. The other end of the first wall 113a is located in the vicinity of the gas circulation part L. One end of the second wall 113b is connected to the end of the first wall 113a on the gas flow part L side. The other end of the second wall 113b is in contact with an annular wall W1 surrounding the edge of the electrolyte inlet C provided in the exhaust chamber D3.

Thus, the partition wall 113 is bent at the connection portion between the first wall 113a and the second wall 113b so as to avoid the portion where the gas circulation portion L is provided. Thereby, the exhaust chamber constituting part 100 secures an area in which the gas circulation part L is provided by bending the partition wall part 113. That is, the partition wall 113 is provided at a position facing the accommodating portion lower surface 201a, and is provided at a position avoiding a portion facing the overlapping passage portion R1 of the second lid portion 20.

In the exhaust chamber constituting part 100, the wall part such as the partition wall 113 is not provided in the part where the gas circulation part L is provided. As a result, the exhaust chamber constituting unit 100 can use the portion facing the overlapping passage R1 as the gas flow part L without being blocked by the wall.

As described above, in the lid 3 of the lead storage battery 1, the portion of the second lid 20 where the accommodating portion 20 a is provided is thinner than the other portions of the second lid 20. The overlapping passage portion R1 of the exhaust passage R provided in the second lid portion 20 is provided in a portion where the thickness of the second lid portion 20 is thin. In the exhaust chamber constituting portion 100 of the first lid portion 10, a gas circulation portion L is provided at a portion facing the overlapping passage portion R1. For this reason, even when the first lid portion 10 and the second lid portion 20 are joined by heat welding, even if the overlapping passage portion R1 of the second lid portion 20 is blocked by the melted resin (partly blocked). However, the lid 3 of the lead storage battery 1 can ensure the gas flow in the exhaust passage R via the gas flow portion L provided in the exhaust chamber constituting portion 100. Therefore, the lead storage battery 1 can secure a gas discharge path from the exhaust chambers D1 to D6.

In the exhaust chamber constituting part 100, the partition wall 113 provided at the part facing the accommodating part lower surface 201a is bent so as to avoid the part facing the overlapping passage part R1. In this case, even if the lid 3 of the lead storage battery 1 is provided with the partition wall portion 113, the portion facing the overlapping passage portion R 1 in the exhaust chamber constituting portion 100 can be used as the gas circulation portion L.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, instead of the partition wall 113 provided in the exhaust chamber constituting unit 100, a partition wall 113A shown in FIG. 7 may be provided. The partition wall 113A extends along the Y-axis direction. Both end portions of the partition wall portion 113A are in contact with the inner surface of the peripheral wall portion 110, respectively. The partition wall 113A is provided with a notch 113c at a portion of the second lid 20 that faces the overlapping passage R1. In this case, even if the lead storage battery 1 is provided with the partition wall portion 113 A, the portion facing the overlapping passage portion R 1 in the exhaust chamber constituting portion 100 can be used as the gas circulation portion L.

Further, the

accommodating portions

11a and 20a may not be located in the center portion of the lid 3 in the X-axis direction. Moreover, the

accommodating parts

11a and 20a are not limited to extending along the Y-axis direction, and may extend along the X-axis direction. The lid 3 may be configured such that only one handle is attached. The

handles

4 and 5 are not limited to being substantially U-shaped, and may have a portion that is accommodated in the accommodating portion 20a.

In the exhaust chamber constituting part 100, the shape of the wall parts such as the partition walls 111 to 115 is not limited to the shape shown in FIG. 4 and the like as long as the gas flow part L can be secured in a portion facing the overlapping passage part R1. For example, the second wall 113b of the partition wall 113 shown in FIG. 4 is not limited to being in contact with the annular wall W1 provided in the exhaust chamber D3. For example, the second wall 113b may be in contact with an annular wall W1 provided in the exhaust chamber D4, or may be in contact with another wall. For example, the partition portions 111 to 115 for partitioning the exhaust chamber may not be provided in a portion of the exhaust chamber constituting portion 100 that faces the accommodating portion lower surface 201a. The exhaust passage R of the second lid 20 is not limited to the configuration shown in FIG. The exhaust passage R only needs to have an overlapping passage portion R1 that overlaps the accommodating portion 20a when viewed in the overlapping direction of the first lid portion 10 and the second lid portion 20.

Lead storage battery can secure a gas discharge route from the exhaust chamber.

DESCRIPTION OF SYMBOLS 1 ... Lead storage battery, 2 ... Battery case, 3 ... Cover, 4, 5 ... Handle, 10 ... 1st cover part, 20 ... 2nd cover part, 20a ... Storage part, 101 ... Main-body part, 113, 113A ... Partition part (Wall portion), 113c ... notch, D1 to D6 ... exhaust chamber, L ... gas flow portion, R ... exhaust passage.

Claims

A lead-acid battery lid to which a handle is attached,
A first lid attached to the upper part of the battery case of the lead storage battery;
A second lid that overlaps the first lid and forms an exhaust chamber with the first lid;
With
The second lid portion is provided with a housing portion that is recessed toward the first lid portion side and houses the handle.
An exhaust passage for guiding the gas in the exhaust chamber to the outside is provided on the surface of the second lid on the first lid side,
The exhaust passage has an overlapping passage portion that is a portion overlapping the accommodating portion when viewed along the overlapping direction of the first lid portion and the second lid portion,
The first lid portion is provided with a gas circulation portion that extends along the overlap passage portion and circulates gas at a portion facing the overlap passage portion,
The overlapping passage portion opens to the first lid portion side,
The gas circulation part is a lid of the lead storage battery that is open to the second lid part side.
The first lid portion includes a main body portion, and a wall portion that rises from the main body portion toward the second lid portion side and partitions the exhaust chamber of the first lid portion,
The said wall part is provided in the position which opposes the surface at the side of the said 1st cover part in the said accommodating part, and is provided in the position which avoided the site | part which opposes the said overlap channel | path part. Lead-acid battery lid.
The first lid portion includes a main body portion, and a wall portion that rises from the main body portion toward the second lid portion side and partitions the exhaust chamber of the first lid portion,
The wall portion is provided at a position facing the surface of the housing portion on the first lid portion side,
The lid of the lead storage battery according to claim 1, wherein the wall portion is provided with a notch at a portion facing the overlapping passage portion.
A lead storage battery comprising the lid of the lead storage battery according to any one of claims 1 to 3.