JP3778383B2 - Capacitor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a capacitor.
[0002]
[Prior art]
Japanese Unexamined Patent Publication No. 7-201679 “Aluminum Electrolytic Capacitor” is known as a capacitor.
The above-mentioned technique solves the liquid leakage failure of the aluminum electrolytic capacitor and the deformation of the sealing body. As shown in FIG. 1 of the same publication, the capacitor element 1 and the electrolytic solution are placed in the aluminum case 5 having an opening in the upper part. 4 and an aluminum electrolytic capacitor in which the opening is closed with a sealing body 7 is disclosed.
[0003]
[Problems to be solved by the invention]
In the above conventional capacitor, the aluminum case 5 has only one power storage unit composed of the capacitor element 1 and the electrolytic solution 4, and the electric capacity of the capacitor is fixed to a predetermined value. If different electric capacities are required, different capacitors must be prepared, or a plurality of the same capacitors must be connected to obtain a predetermined electric capacity.
In addition, for example, when a capacitor fails, there is a disadvantage that it must be replaced with another capacitor.
[0004]
Accordingly, an object of the present invention is to form a plurality of power storage units in one capacitor, so that (1) the electric capacities of these power storage units can be made different, and (2) these power storage units are combined. It is an object of the present invention to provide a capacitor that can be used and can change the setting of its electric capacity, and that can back up the other power storage units even if some power storage units fail.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention , a plurality of vertical grooves are formed on the side wall of the capacitor container, and two vertical grooves facing each other are selected from these vertical grooves, and a partition plate is inserted. Thus, it is possible to divide the inside of the capacitor container into a plurality of rooms with partition plates, and to make the number and size of these rooms different. A plurality of power storage units can be stored in a single capacitor container, and the electric capacity of each power storage unit can be set differently. A lid is attached to the capacitor container, and the power storage unit can be used as a capacitor or a short bar. In order to switch, the control circuit board provided in each electrical storage part was attached together with the electrode plate side .
The electric capacities of a plurality of power storage units can be set differently, and these power storage units can be used in combination, and the setting of the electric capacity can be changed. Even if a failure occurs, this can be backed up by another power storage unit.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a perspective view showing a first embodiment of a capacitor according to the present invention. The capacitor 1 includes a capacitor container 10, a lid 20 attached to the top of the capacitor container 10, and a lid 20 attached to the lid 20. The control circuit board 30 (... indicates a plurality. The same shall apply hereinafter). 2 is a positive connection cable, 3 is a negative connection cable, 4, 4, 5,..., 6 are bolts.
[0007]
FIG. 2 is an exploded perspective view of the capacitor according to the first embodiment of the present invention. The capacitor container 10 includes a thermocouple 12 embedded in the container body 11 and an output terminal 13 of the thermocouple 12. It consists of partition plates 14 for partitioning the inside of the container body 11.
[0008]
The container body 11 is divided into a container body 11 and a flange portion 11a provided on the top of the container body 11, wiring grooves 11b and 11b formed in the flange portion 11a and passing the thermocouples 12 to the output terminals 13. Two chambers 11c, 11c, vertical grooves 11e formed in the side walls 11d of these tanks 11c, 11c, and windows 11f formed in the side walls 11d to expose the thermocouples 12 into the tank 11c. And, in order to attach the lid 20, there are female screws 11g through which bolts 5 (see FIG. 1) are passed. In addition, 11h is a liquid gasket and seals between the container main body 11 and the lid | cover 20, and the partition plate 14 and the lid | cover 20.
[0009]
The partition plate 14 is inserted from above into the two vertical grooves 11e of the container body 11 and a lateral groove (not shown) formed on the bottom surface of the tanks 11c and 11c so as to partition the inside of the tanks 11c and 11c. Thus, a plurality of sections S1, S2, S3, S4, and S5 are formed and fixed to the capacitor container 10 by welding or bonding. The fixing position of these partition plates 14 can be selected.
[0010]
The lid 20 includes an output terminal 21 for outputting a signal from the control circuit board 30, and through holes 22 for inserting bolts 5 to be attached to the capacitor container 10, and positive / negative connection cables 2, 3 ( In order to fix (refer FIG. 1), it has the internal threads 23 and 23 which penetrate the volt | bolts 4 and 4 (refer FIG. 1).
The control circuit board 30 has recesses 31 for receiving the heads of bolts 8 and 9 (see FIG. 3) described later.
[0011]
Capacitor 1 includes electrode plate assemblies 7d, 7e, 7e, 7d, a plurality of electrode plates 7a, positive electrode common terminals 7b, and negative electrode common terminals 7c in sections S1, S2, S3, S4, and S5 of capacitor container 10. 7f.
[0012]
The compartments S1, S2, S3, S4, and S5 are filled with the electrolytic solution R (see FIG. 3), and the electrode plate assembly 7d is accommodated in the compartment S1, thereby forming a power storage unit T1, and this power storage unit T1 and the control circuit board One capacitor module M1 (see FIG. 3) is configured in combination with 30.
[0013]
Similarly, the power storage unit T2 is stored by storing the electrode plate assembly 7d in the partition S2, the power storage unit T3 is stored by storing the electrode plate assembly 7d in the partition S3, and the electrode plate assembly 7e is stored in the partition S4. Thus, the power storage unit T4 is formed, and the electrode plate assembly 7f is housed in the section S5, thereby forming the power storage unit T5. , M3, M4, and M5. The capacitor modules M1, M2, M3, M4, and M5 include thermocouples 12.
[0014]
3 is a cross-sectional view taken along line 3-3 of FIG. 1. The electrode plate assembly 7d is accommodated in the capacitor container 10, a lid 20 is attached to the capacitor container 10, and the control circuit board 30 is attached to the lid 20 with bolts 8 and 9. Shows the state of being attached together with the electrode plate assembly 7d.
[0015]
The lid 20 includes bus bars 15 a and 15 b on the bottom surface, and the bus bar 15 a is electrically connected to the control circuit board 30 with bolts 16, and the bus bar 15 b is electrically connected to the negative common terminal 7 c and the control circuit board 30. In addition, 11j ... is an O-ring groove, 11k, 11k, 11m, 32, 32 are through holes, 17 ... is an O-ring, and R is an electrolyte.
[0016]
FIG. 4 is a bottom view of the lid of the capacitor according to the first embodiment of the present invention, showing the state of arrangement of the bus bars. Here, 15c, 15d, 15e, and 15f are bus bars, and the capacitor modules M1, M2, M3, M4, and M5 are connected to the bus bars 15a and 15b described above. Here, five capacitor modules M1 are connected. , M2, M3, M4, and M5 are connected in series.
[0017]
Thus, by integrally forming the lid 20, the capacitor modules M1, M2, M3, M4, and M5 can be easily connected between the bus bars 15a, 15b, 15c, 15d, 15e, and 15f. The compartments S1, S2, S3, S4, and S5 of the capacitor container 10 can be covered together, and the handling becomes easy.
Furthermore, by making the lid 20 larger than the capacitor container 10, the positive / negative electrode connection cables 2 and 3 can be attached to the lid 20, and the lid 20 can also serve as a power output terminal.
[0018]
FIG. 5 is a diagram for explaining an electric circuit of the capacitor module according to the first embodiment of the capacitor according to the present invention. The capacitor modules M1, M2, M3, M4, and M5 have the same circuit configuration except for the differences described later. Here, the capacitor module M1 will be described.
The capacitor module M1 includes a power storage unit T1, a thermocouple 12, and a control circuit board 30.
The power storage unit T1 is an electric double layer capacitor and is electrically connected to the connection terminals B and E.
[0019]
The electric double layer capacitor is composed of a capacitor having a large capacity (for example, several farads), and is charged by an external charger (not shown) to accumulate a predetermined amount of electricity (charge amount). It stores the amount of electricity corresponding to the power required to connect and drive a motor such as an electric vehicle.
The thermocouple 12 measures the temperature of the electric double layer capacitor and monitors the temperature rise due to heat generated when the electric double layer capacitor is charged.
[0020]
The circuit board 30 includes a switch element 34, a bypass conductor 35 from the contact point D of the switch element 34 to the connection point Q, and connection terminals A1, A2, B1, E1, G2, K2, H2, J2, and L2. .
The connection terminal A1 is electrically connected to the bus bar 15a, and the bus bar 15a is electrically connected to the connection terminal C1.
[0021]
The connection terminal C1 corresponds to the bolt 4 (see FIG. 1) for fixing the positive electrode connection cable 2 (see FIG. 1) in the capacitor module M1, and is adjacent in the capacitor modules M2, M3, M4, and M5. The capacitor module is connected to a connection terminal C2 described later.
[0022]
The connection terminals B1 and E1 are connected to the connection terminals B and E.
The connection terminal A2 is electrically connected to the bus bar 15b, and the bus bar 15b is electrically connected to the connection terminal C2.
[0023]
In the capacitor module M1 and the capacitor modules M2, M3, and M4, the connection terminal C2 is connected to the connection terminal C1 of the adjacent capacitor module. In the capacitor module M5, the negative electrode shown in FIG. It corresponds to the bolt 4 for fixing the connection cable 3 (see FIG. 1).
The connection terminals A1, B1, and E1 are electrically connected to the terminal P, the contact D, and the contact C of the switch element 34, respectively.
[0024]
Further, the connection terminal B1 is electrically connected to the connection terminals L2 and A2, and the connection terminal E1 is electrically connected to the connection terminal K2. That is, the connection terminals B1 and E1 are electrically connected to the electrode plate of the power storage unit T1, and the voltage of the power storage unit T1 can be detected by the connection terminals B1 and E1.
[0025]
The connection terminals H2 and J2 are connected to the thermocouple 12, the electromotive force of the thermocouple 12 can be output from the connection terminals H2 and J2, and the temperature corresponding to the electromotive force can be obtained.
The connection terminal G <b> 2 is a terminal for inputting a control signal to the switch element 34.
[0026]
The switch element 34 is composed of a one-circuit, two-contact type electronic switch having a control terminal. In a normal state (indicated by a solid line) based on a control signal from a control means (not shown), the contact C on the power storage unit T1 side is connected. The capacitor module M1 is used as a capacitor by connecting to the connection terminal A1, and in the break state (indicated by a broken line), the contact D on the bypass conductor 35 side is connected to the connection terminal A1 and the capacitor module M1 is used as a short bar. Is.
[0027]
Next, the operation of the partition plate 14 described above will be described.
FIGS. 6A and 6B are views for explaining attachment of the partition plate of the capacitor according to the first embodiment of the present invention.
(A) shows that when the minimum unit for dividing the tank 11c by the partition plate 14 is one section, two sections are four places (sections SA, SB, SC, SD), and one section is four places (SE, SF, SG, SH) An example of formation is shown.
In this example, for example, in an electric vehicle or the like, a capacitor module composed of sections SA, SB, SC, and SD is used in normal driving, and a large amount of power is required to reach a slope or accelerate. Then, one capacitor module composed of the sections SE, SF, SG, and SH is added and used according to the load.
[0028]
(B) shows an example in which five sections are formed in two places (sections SJ and SK) and one section is formed in two places (sections SL and SM).
In this example, for example, in an electric vehicle that always uses a large amount of power, a capacitor module that is normally configured with the sections SJ and SK is used, and the amount of electricity in the capacitor modules in the sections SJ and SK decreases. In the event of an emergency such as a case, the sections SL and SM are used.
[0029]
Next, the assembly procedure of the capacitor 1 will be described below.
{Circle around (1)} In FIG. 2, in order to obtain a desired electric capacity, partition plates 14 are inserted into vertical grooves 11 e and 11 e at predetermined positions of the capacitor container 10 and horizontal grooves (not shown).
(2) The electrode plate assemblies 7d, 7d, 7d, 7e, and 7f are stored in the sections S1, S2, S3, S4, and S5 divided by the partition plates 14.
(3) An electrolyte R (see FIG. 3) is injected into each of the compartments S1, S2, S3, S4 and S5.
[0030]
(4) The liquid gasket 11h is applied to the flange portion 11a of the capacitor container 10, the upper surface between the tanks 11c and 11c of the capacitor container 10, and the upper end surface of the partition plate 14.
(5) Place the lid 20 on which the control circuit board 30... Is fixed in advance with bolts 16 (see FIG. 3) on the capacitor container 10.
[0031]
(6) In FIG. 3, the bolts 8 and 9 are inserted into the recesses 31 and 31, the through holes 32 and 32 and the through holes 11k and 11k of the control circuit board 30, and the positive and negative common terminals 7b and 7c of the electrode plate assembly 7d. The control circuit board 30 and the electrode plate assembly 7d are fixed to the lid 20 by screwing them into the female screws 7g and 7g.
The other capacitor modules M2, M3, M4, M5 and the control circuit board 30 are similarly fixed.
[0032]
(7) In FIG. 2, bolts 5 (see FIG. 1) are inserted into the through holes 22 of the lid 20 and screwed into the female threads 11 g of the capacitor container 10 to fix the lid 20 to the capacitor container 10.
(8) In FIG. 1, the bolts 4 and 4 are screwed into the internal threads 23 and 23 (see FIG. 2) of the lid 20 to attach the positive / negative electrode connecting cables 2 and 3 to the lid 20.
This completes the assembly of the capacitor 1. In the above assembly method, the control circuit board 30 and the electrode plate assemblies 7d, 7d, 7d, 7e, and 7f may be attached to the lid 20 in advance, and the lid 20 may be attached to the capacitor container 10.
[0033]
As described above, the inside of the capacitor container 10 is divided into a plurality of sections S1, S2, S3, S4, and S5 by the partition plates 14..., And the electrode plate assembly 7d is divided into these sections S1, S2, S3, S4, and S5. , 7d, 7d, 7e, 7f and the electrolytic solution R, a plurality of power storage units T1, T2, T3, T4, and T5 are accommodated in one capacitor container 10, so that each power storage unit T1, The electric capacities of T2, T3, T4, and T5 can be set differently.
[0034]
Further, the power storage units T1, T2, T3, T4, and T5 can be used in combination, and the combination can be selected to change the setting of the capacitance.
Furthermore, even if some of the power storage units fail, this can be backed up by another power storage unit.
[0035]
Furthermore, the capacitor 1 can reduce the volume of the wall of the storage container, and can increase the capacity of the capacitor container 10 by that amount, rather than using a plurality of separate capacitors. The capacity can be increased, it can be used alone, and can be handled easily.
[0036]
FIG. 7 is a perspective view showing a second embodiment of the capacitor according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The capacitor 50 is formed by integrally forming the compartment SP, the capacitor container 55, the electrode assembly 60 housed in the compartment SP, a lid 65 attached to the upper portion of the capacitor container 55, and the lid 65. It consists of the control circuit board 70 (bolts 5 ..., 6 ... are omitted). In the figure, the compartments SP have the same volume, but the volumes may be different.
[0037]
In this manner, by forming a plurality of sections SP in the capacitor container 55 and integrally forming them, the capacitor container 55 can be easily formed and the cost can be reduced.
Moreover, the electric capacity of each power storage unit of the capacitor 50 can be set differently, and electric power can be supplied to an electric vehicle or the like as necessary.
[0038]
The partition plate 14 of the present invention is inserted into the vertical groove 11e and the horizontal groove. However, the present invention is not limited to this, and each power storage device can be stored by directly welding and fixing it to the side wall 11d and the bottom surface of the tank 11c. The electric capacity of the part can be further freely set as desired.
The capacitor modules M1, M2, M3, M4, and M5 are connected in series, but may be connected in parallel or a combination of parallel and series.
Furthermore, the partitioning method of the capacitor containers 10 and 55 is not limited to this, and the number and size of the tank 11c and the partitions S1, S2, S3, S4, S5, and SP may be varied.
[0039]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
The capacitor according to claim 1 forms a plurality of vertical grooves on the side wall of the capacitor container, selects two vertical grooves facing each other from these vertical grooves, and inserts a partition plate to partition the interior of the capacitor container. The plate can be divided into a plurality of rooms and the number and size of these rooms can be made different , and each electrode plate and electrolyte can be put in each of these rooms, so that a plurality of capacitors can be placed in one capacitor container. The electricity storage units are housed and can be set by changing the electric capacity of each electricity storage unit. A lid is attached to the capacitor container, and the electricity storage unit is provided on the lid to switch the electricity storage unit to use as a capacitor or a short bar. The control circuit board was attached together with the electrode plate side .
The electric capacities of a plurality of power storage units can be set differently, and these power storage units can be used in combination, and the setting of the electric capacity can be changed. Even if a failure occurs, this can be backed up by another power storage unit.
Furthermore, the volume of the wall of the storage container can be reduced and the capacity of the capacitor container can be increased by that amount, compared to the case where a plurality of separate capacitors are used.
[Brief description of the drawings]
1 is a perspective view showing a first embodiment of a capacitor according to the present invention; FIG. 2 is an exploded perspective view of the first embodiment of a capacitor according to the present invention; FIG. 4 is a bottom view of the lid of the first embodiment of the capacitor according to the present invention. FIG. 5 illustrates an electric circuit of the capacitor module of the first embodiment of the capacitor according to the present invention. FIG. 6 is a diagram for explaining the mounting of the partition plate according to the first embodiment of the capacitor according to the present invention. FIG. 7 is a perspective view showing the second embodiment of the capacitor according to the present invention. ]
DESCRIPTION OF SYMBOLS 1 ... Capacitor, 7a ... Electrode plate, 7d, 7e, 7f ... Electrode plate assembly, 10 ... Capacitor container, 11d ... Side wall, 11e ... Vertical groove, 14 ... Partition plate, 20 ... Lid, 30 ... Control circuit board, R ... Electrolyte solution, S1, S2, S3, S4, S5... Room (section), T1, T2, T3, T4, T5.

Claims (1)

Forming a plurality of longitudinal grooves in the side wall of the capacitor container, these select the two longitudinal grooves opposite from among longitudinal groove by inserting the partition plate, a plurality of chambers inside the condenser container by the partition plate The number and size of these rooms can be made different, and a plurality of power storage units are accommodated in one capacitor container by putting an electrode plate and an electrolyte in each of these rooms. In addition, the electric capacity of each power storage unit can be set differently,
A lid is attached to the capacitor container, and a control circuit board provided in the electricity storage unit is attached to the lid together with the electrode plate side in order to switch the electricity storage unit to use as a capacitor or a short bar. Capacitor characterized by.

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