JPH0514466Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a storage battery and a plate group fixing device, which are characterized by a fixing structure of a plate group in each cell chamber of a battery case.

[Prior Art] Japanese Utility Model Application Publication No. 52-75028 discloses a plate group fixing device that is placed on top of a plate group housed in a cell chamber and presses the plate group toward the bottom wall of a battery case. A storage battery is disclosed. The conventional plate group fixture is
It consists of a single plate-shaped electrode group holder that comes into contact with the upper end of the separator of the electrode group, and protrusions provided at both ends of the electrode group holder. In conventional electrode group fixing devices, the electrode group fixing device was fixed to the battery case by ultrasonically welding protrusions provided at both ends of the electrode group holder to the opposing inner walls of the cell chamber. .

[Problems to be solved by the invention] However, if the plate group fixing device is fixed by ultrasonic welding like the conventional electrode plate group fixing device, the process of fusing the plate group fixing device will be added to the battery assembly process. As a result, the number of assembly steps increases and special fusing equipment for the electrode plate group fixing device is required, which raises the problem of increasing the manufacturing cost of the storage battery.

An object of the present invention is to provide a plate group fixing device that can be easily fixed using existing assembly equipment, and a storage battery equipped with the plate group fixing device.

[Means for Solving the Problems] The configuration of the present invention for achieving the above object will be explained with reference to FIGS. 1 to 3 a to 3 c corresponding to the embodiments. In the storage battery of the present invention, A plurality of cell chambers 1B partitioned by partition walls 1A are formed in a battery case 1. A separator 2C is provided in the plurality of cell chambers 1B.
A plurality of anode plates 2A and a plurality of cathode plates 2B are laminated via a plurality of anode plates 2A and a plurality of cathode plates 2B, an anode strap 2D connecting the plurality of anode plates, respectively, and a cathode strap 2E connecting the plurality of cathode plates, respectively. A plurality of electrode plate groups 2 are stored. Two adjacent cell chambers 1B, two electrode plate groups 2 housed in 1B,
2 straps to be connected to each other 2
D, 2D or 2E, 2E are inter-cell connection through holes 1 formed in a partition wall 1A that partitions two cell chambers.
They are mutually connected by an inter-cell connection conductor portion 4 passing through A1. Then, a plate group fixture 3 for pressing the plate group 2 toward the bottom of the battery case 1 to prevent movement of the plate group 2 within the cell chamber is arranged on the plate group 2 for each cell chamber.

The electrode plate group fixing device 3 of the present invention is provided at both ends of the electrode plate group holding part 3A which presses the electrode plate group 2 from above and the electrode plate group holding part 3A, and facing inner wall 1C of the cell chamber 1B.
and an inner wall abutting portion 3B that comes into contact with the inner wall abutting portion 3B. Then, a through-hole 3B1 for attaching a fixing device that is aligned with the through-hole 1A1 for connecting between cells is formed in the inner wall abutting portion 3B, and the inter-cell connecting conductor portion 4 is passed through the through-hole 3B1 for attaching a fixing device to fix the electrode plate group. The tool 3 is fixed to the partition wall 1A.

The electrode plate group holding part 3A is composed of a separator holding part 3A1 that comes into contact with the upper end of the separator 2C, and a strap holding part 3A2 that comes into contact with the top surface of the anode strap 2D and the top surface of the cathode strap 2E, respectively. The strap holding portion 3A2 is provided with a claw portion 3A3 that comes into contact with the upper end of the separator 2C.

[Function] When fixing the electrode plate group fixing device 3 to the partition wall 1A of the battery case 1, first, the inter-cell connection formed in the partition wall 1A through the fixing device attachment through hole 3B1 provided in the inner wall contact portion 3B. The electrode plate group fixture 3 is arranged on the electrode plate group 2 so as to be aligned with the through hole 1A1. Next, the two straps 2D, 2D or 2E, 2E to be connected to each other of the two electrode plate groups 2, 2 housed in the two adjacent cell chambers 1B, 1B are connected to the partition wall 1A that partitions the two cell chambers. They are mutually connected by the inter-cell connection conductor portion 4 passing through the inter-cell connection through-hole 1A1 formed in , and the fixture attachment through-hole 3B1 of the electrode plate group fixture 3. The cell-to-cell connection work of connecting the straps of the two electrode plate groups 2, 2 by the cell-to-cell connection conductor portion 4 is a work that is performed with existing storage batteries. Therefore, according to the present invention, it is possible to complete the work of fixing the electrode plate group fixing device 3 to the partition wall 1A at the same time as the work of connecting the cells, which eliminates the need for an increase in the assembly process of the storage battery compared to the conventional method, and the need for special assembly. The electrode plate group fixture 3 can be fixed using existing equipment without using any equipment. Further, according to the present invention, since the electrode plate group fixture 3 is fixed to the partition wall 1A by the inter-cell connection conductor portion 4, there is no need to prepare separate fixing parts, and the number of parts of the storage battery does not increase. do not have.

Furthermore, the separator holding part 3 of the electrode plate group holding part 3A
By pressing each separator 2C of the electrode plate group 2 with A1 and pressing the anode strap 2D and cathode strap 2E with the strap holding portion 3A2, the electrode group can be held down more reliably than when pressing only the separators. can. In particular, if the claw 3A3 provided on the strap holding portion 3A2 is also brought into contact with the separator 2C, the electrode plate group 2 can be held down with even higher precision.

[Example] An example of the present invention will be described below with reference to Figs. 1 to 3a.
This will be explained in detail with reference to .

In this embodiment, the present invention is applied to a lead-acid battery, and a battery case 1 made of synthetic resin or the like is provided with a plurality of cell chambers 1B by a plurality of separators, that is, partition walls 1A.
are formed independently, and each cell chamber 1B has an electrode plate group 2.
is stored. Each electrode plate group 2 includes a plurality of anode plates 2A and a plurality of cathode plates 2B and a plurality of separators 2.
The ears of each anode plate 2A are connected by an anode strap 2D, and the ears of each cathode plate 2B are connected by a cathode strap 2E. Inside each cell chamber 1B, a plate made of an insulating material is placed on the plate group 2 and prevents the plate group 2 from moving by pressing the plate group 2 against the bottom 1D of the battery case 1. A group fixture 3 is housed. The electrode plate group fixture 3 is fixed in the cell chamber 1B by being pressed against each inner wall 1C facing each other in the stacking direction of the electrode plate group 2 in each cell chamber 1B. Each electrode plate group fixture 3
is a plate group holding part 3A that presses the plate group 2 from above.
and two inner wall abutting portions 3B which are pressed against each inner wall 1C at both ends of the electrode plate group holding portion 3A. Each inner wall contact portion 3B is formed into a plate shape so as to be interposed between the inter-cell connection portion 2D1 of the anode strap 2D or the inter-cell connection portion 2E1 of the cathode strap 2E and the inner wall 1C.
A fixture mounting through hole 3B1 is formed in the inner wall abutting portion 3B, which matches the intercell connection through hole 1A1 of the partition wall 1A. Since the electrode plate group fixing tool 3 is formed in this way, when performing cell-to-cell connection, the cell-to-cell connection portion 2D1 is inserted into the cell-to-cell connection through-hole 1A1 and the fixture attachment through-holes 3B1 on both sides thereof. Alternatively, it is fixed to the partition wall 1A by an intercell conductor connection portion 4 formed by filling with 2E1 molten lead. The electrode plate group holding part 3A is connected to each inner wall contact part 3.
A separator holding part 3A1 which is provided between the straps B and comes into contact with the upper end of each separator 2C, and two strap holding parts 3 which come into contact with the upper surface of the anode strap 2D and the cathode strap 2E, respectively.
It is composed of A2. A claw portion 3A3 for hooking each strap 2D, 2E is formed at a position below each strap holding portion 3A2 of the electrode plate group fixture 3. As shown in the figure, the tip of this claw portion 3A3 is connected to the separator holding portion 3A.
1, the separator 2C can also be held down by the claw portion 3A3.

In manufacturing the lead-acid battery of the above example,
First, the electrode plate groups 2 are respectively housed in each cell chamber 1B of the battery case 1. In this case, the overall thickness of each electrode plate group 2 in the stacking direction does not have to be so thick that it would be forced into each cell chamber 1B as in the conventional case, and each component of each electrode plate group 2 can be separated. The thickness should be sufficient to maintain contact without touching the surface. Therefore, each electrode plate group 2 can be stored in each cell chamber 1B more easily than in the past. Next, the electrode plate group fixture 3 is placed above each electrode plate group 2 in each cell chamber 1B. At this time, each inner wall contact portion 3B of the electrode plate group fixture 3 is connected to the inter-cell connection portions 2D1, 2E1 of each strap 2D, 2E and the inner wall 1 of the cell chamber 1B.
C and is pressed against the inner wall 1C. Further, at this time, each separator holding portion 3A1 is pressed against the upper end of each separator 2C of the electrode plate group 2, and each strap holding portion 3A2 is pressed against the upper surface of each strap 2D, 2E of the electrode plate group 2, respectively. Thereby, the electrode plate group 2 is clamped and fixed between the electrode plate group holding part 3A and the bottom part 1D of the battery case 1, and is prevented from moving within the cell chamber 1B. Next, the inter-cell connection parts 2D1 or 2E1 of adjacent cells are resistance welded. At this time, electricity is applied to each cell-to-cell connection portion 2D1 or 2E1 to melt the lead in the cell-to-cell connection portion 2D1 or 2E1, and the molten lead is passed through the inner wall contact portion 3B of each electrode plate group fixture 3. The intercell connection conductor portion 4 is formed by filling the hole 3B1 and the intercell connection through hole 1A1 of the partition wall 1A.

In this way, each electrode plate group fixture 3 is attached to the battery case 1.
Each separator holding part 3A1 can hold each separator 2C, and each anode plate 2A and each cathode plate 2B can be fixed to each strap holding part 3A2 through an anode strap 2D and a cathode strap 2E. Since the electrode plate group 2 can be held in place, the entire electrode plate group 2 can be completely integrated with the battery case 1.

It should be noted that the work required to arrange the electrode plate group fixture 3 in each cell chamber 1B is only a few seconds, and is not a troublesome work at all.

[Effects of the invention] As described above, according to the invention, it is possible to complete the work of fixing the electrode plate group fixing device to the partition wall at the same time as the work of connecting the cells, and the assembly process of the storage battery is increased compared to the conventional method. In addition, the electrode plate group fixture can be fixed using existing equipment without using special assembly equipment. Further, according to the present invention, since the electrode plate group fixing device is fixed to the partition wall by the inter-cell connection conductor portion, there is no need to prepare separate fixing parts, and the number of parts of the storage battery does not increase.

Furthermore, according to the present invention, each separator of the electrode plate group is held down by the separator holding part of the electrode plate group holding part, and the anode strap and the cathode strap are held down by the strap holding part, respectively. The electrode plate group can be held down securely. In particular, if the claws provided on the strap holding portions are also brought into contact with the separator, the electrode plate group can be held down with even higher precision.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional front view of essential parts of a storage battery according to an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, and Figs.
3C is a partially sectional plan view, a partially sectional side view, and a front view of the electrode plate group fixing device of the present invention, respectively. 1... Battery case, 1A... Partition wall, 1A1... Through hole for connection between cells, 1B... Cell chamber, 1C... Opposing inner wall of cell chamber, 1D... Bottom of battery case, 2... Pole plate Group, 2A... Anode plate, 2B... Cathode plate, 2C...
...Separator, 2D...Anode strap, 2E...
... Cathode strap, 3... Plate group fixing tool, 3A...
... Plate group holding part, 3A1... Separator holding part, 3A2... Strap holding part, 3A3...
Claw part, 3B... Inner wall contact part, 3B1... Through hole for fixing tool attachment, 4... Inter-cell connection conductor part.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of cell chambers partitioned by partition walls are formed in a battery case, a plurality of anode plates and a plurality of cathode plates stacked with separators interposed therebetween, and a plurality of A plurality of electrode plate groups each comprising an anode strap that connects a plurality of anode plates and a cathode strap that connects a plurality of cathode plates, respectively, are stored in the plurality of cell chambers, and two adjacent cell chambers The two straps to be connected to each other of the two electrode plate groups housed in the cell chambers are connected to each other by the intercell connection conductor portion passing through the intercell connection through hole formed in the partition wall that partitions the two cell chambers. An electrode plate group fixing device is connected to the electrode plate group for each cell chamber and presses the electrode plate group toward the bottom of the battery case to prevent movement of the electrode plate group within the cell chamber. In the storage battery arranged above, the plate group fixing device is provided at both ends of a plate group holding part that presses the plate group from above and the plate group holding part so that the plate group fixing devices face each other in the cell chamber. It has an inner wall abutting part that comes into contact with the inner wall, and the inner wall abutting part is formed with a through hole for attaching a fixture that is aligned with the through hole for connecting between cells, and the through hole for attaching a fixing tool is formed in the inner wall abutting part. A storage battery characterized in that the intercell connection conductor portion passes through the hole and the electrode plate group fixture is fixed to the partition wall. (2) The electrode plate group holding part is composed of a separator holding part that comes into contact with the upper end of the separator, and a strap holding part that comes into contact with the top surface of the anode strap and the top surface of the cathode strap, respectively, and the strap holding part The storage battery according to claim 1, wherein the portion is provided with a claw portion that comes into contact with the upper end of the separator. (3) A plate group holding part that presses down the plate group arranged in the cell chamber of the storage battery from above, and an inner wall contact provided at both ends of the plate group holding part and abutting against the opposing inner walls of the cell chamber. An electrode plate group fixing device for a storage battery, characterized in that a through hole for fixing the fixing device through which an inter-cell connection conductor portion passes is formed in the inner wall contact portion. (4) A separator holding part where the plate group holding part contacts the upper end of the separator of the plate group, and a strap which contacts the top surface of the anode strap of the plate group and the top surface of the cathode strap of the plate group, respectively. 4. The storage battery electrode plate group fixing device according to claim 3, further comprising a holding part, and the strap holding part is provided with a claw part that comes into contact with the upper end of the separator.