JP4506694B2 - Storage battery - Google Patents

Description

  The present invention relates to a storage battery including a battery state determination module in which elements necessary for determining a battery state such as a charge state and a life of a battery are accommodated in a package and a battery state display unit is provided on the upper part of the package. .

Storage batteries such as lead storage batteries will deteriorate with use and will eventually run out of life, so in order to prevent a situation in which the load cannot be driven suddenly, it is necessary to accurately grasp the state of the storage battery, It is necessary to replace it before the end of its life. Further, when the storage battery is insufficiently charged, it is necessary to charge the storage battery before driving the load. Therefore, it is desirable to provide the storage battery with means for making it easy to know its state. Therefore, as shown in Patent Document 1, the present applicant first accommodates the elements necessary for determining the battery state such as the state of charge and the life of the battery in the package and puts it in the upper part of the package. The storage battery which arrange | positioned the battery state determination module provided with the battery state display part in the state fitted to the recessed part provided in the upper surface of the lid | cover of a battery case was proposed.
JP 2005-339969 A

  In the previously proposed storage battery, in order to attach the battery state determination module to the battery case lid in a state where the module is positioned at a predetermined position, a concave portion for fitting the module to the battery case cover is provided. When comprised in this way, there was a problem that it could not be applied to a storage battery in which it is difficult to secure a space for providing a recessed portion in the battery case lid or an existing storage battery that does not have a recessed portion in the battery case lid.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a storage battery capable of attaching a battery state determination module without providing a special positioning part on the battery case lid and having a function of displaying the state of the battery. Is to provide.

In the present invention, a battery power generation element composed of a positive electrode plate, a negative electrode plate, a separator and an electrolyte is housed in a battery case, and positive and negative output terminals are attached to the battery case lid and closed by a plug. At least one through hole is provided in the lid of the battery case, and an element necessary for determining the battery state is accommodated in the package provided with the determination result display unit, and the element in the package is output to the positive electrode side. Targeted is a storage battery in which a battery state determination module formed by pulling out a positive electrode side connection conductor and a negative electrode side connection conductor for connecting to a terminal and a negative electrode side output terminal from the package is attached to the lid of the battery case. .

In the present invention, the battery state determination module package is fixed to a plug that closes a hole provided through the lid of the battery case .

  Generally, in a battery case of a storage battery, a liquid stopper mounting hole used for mounting a liquid stopper, an indicator mounting hole for attaching an indicator for indicating a decrease in the electrolyte level, and an electrolyte used for injecting the electrolyte into each cell chamber Various through-holes such as a liquid injection hole (which is closed by an enclosing plug after the electrolyte is injected) are provided, and these through-holes are closed by the plugs. It may be provided so as to form a part of either.

  When configured as described above, the through hole provided in the battery case lid is used for various purposes without specially providing a part for positioning the battery state determination module, such as providing a recess in the battery case lid. Since the battery state determination module can be attached, the storage battery can be provided with a function of displaying the state without increasing the cost.

  Moreover, since the battery state determination module can be attached using holes provided in the lid of the battery case for various purposes, an existing battery can be easily provided with a function of displaying the battery state.

  In a preferred aspect of the present invention, one of the plugs attached to the lid of the battery case is used as a determination module fixing plug, and a recess is formed at the upper end of the determination module fixing plug. A convex portion is provided at a lower portion of the projection, and the convex portion is positioned by being received in the concave portion and fixed to the determination module fixing liquid stopper.

In another preferred aspect of the present invention, a battery state determination device package is integrally formed on one of the liquid stoppers attached to the lid of the battery case . That is, the package is configured to also serve as a liquid stopper.

  In a preferred aspect of the present invention, ring-shaped terminal fittings are respectively attached to the terminal portions of the positive electrode side connection conductor and the negative electrode side connection conductor drawn from the battery state determination module, and the terminal portions of the positive electrode side connection conductor and the negative electrode side connection conductor Ring-shaped terminal fittings attached respectively to the positive electrode side output terminal and the negative electrode side output terminal are connected to each other.

As described above, according to the present invention, by integrally forming the package of the battery state determining module, or secured to the plug to close the hole provided through the lid of the container, or the said closure, The battery status determination module is attached using a through-hole provided in the lid of the battery case for various purposes without specially providing a part for positioning the module. A function for displaying the status can be provided.

  Further, according to the present invention, the battery state determination module is attached by using the through-hole provided in the battery case lid for various purposes without specially providing a part for positioning the module on the battery case lid. The existing battery can be easily provided with a function of displaying the battery state.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 show an example in which the present invention is applied to a lead storage battery. FIG. 1 is a plan view of a battery state determination module used in the present embodiment. FIG. 2 is an enlarged plan view of a package used in the module. 3 is a front view showing the module together with a liquid stopper attached to the battery case of the storage battery, and FIG. 4 is a cross-sectional view showing a state where the module is attached to the battery case of the storage battery.

  As shown in FIG. 4, the lead-acid battery 1 includes a battery case 2 including a box-type battery case body 201 having an open upper end and a lid 202 that closes an opening at the upper end of the battery case body. The inside of the battery case is partitioned into a plurality of cell chambers, and a battery power generation element composed of a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution is accommodated in each cell chamber. A through hole 203 is formed at a position corresponding to each cell chamber of the battery case lid 202, and the liquid stopper 3 is attached so as to close each through hole 203. A positive electrode side output terminal 4 and a negative electrode side output terminal 5 are attached to the lid 202 of the battery case, and the positive electrode side output terminal 4 and the negative electrode side output terminal 5 are respectively connected to the positive electrode strap and the negative electrode strap (both not shown). Connected).

  In the present embodiment, one liquid stopper 3 attached to the battery case is used as a determination module fixing stopper, and the battery state determination module 6 is attached to this stopper. The liquid stopper 3, which is a determination module fixing stopper, has a plug body 301 having a male screw portion 301 a that is screwed into a female screw portion 203 a provided in the inner periphery of the through-hole 203, and an upper end of the plug body 301. And a tubular portion 303 protruding downward from the lower end of the plug main body 301, and an O-ring 304 is attached to the plug main body 301. An exhaust port 306 for releasing the pressure in the battery case is open on the side surface of the head 302. In the liquid stopper 3, the male thread 301 a of the stopper body 301 is screwed into the female thread 203 a on the inner periphery of the through hole 203, and the O-ring 304 comes into contact with the step formed on the inner periphery of the through hole 203. By tightening the plug body 301 until it is compressed by a predetermined amount, it is fixed to the lid 202 of the battery case. The head 302 of the liquid stopper 3 is formed with a recess 305 that opens at the upper end face.

  The battery state determination module 6 used in the present invention accommodates the elements necessary for determining the battery state in the package 602 provided with the determination result display unit 601, and the elements in the package 602 are output terminals on the positive electrode side of the storage battery. 4 and a negative electrode side connection conductor 604 for connection to the negative electrode side output terminal 5 and a negative electrode side connection conductor 604, respectively, are drawn out from the package 602. Ring-shaped terminal fittings 605 fitted into the positive-side output terminal 4 and the negative-side output terminal 5 are respectively connected to the terminal portions of the positive-side connection conductor 603 and the negative-side connection conductor 604 drawn from the battery state determination module 6. 606 is attached. When the ring-shaped terminal fittings 605 and 606 are connected to the positive output terminal 4 and the negative output terminal 5 respectively, when the terminal fittings 7 and 8 attached to the output cable in a state of being overlapped with these terminal fittings are respectively connected. The positive output terminal 4 and the negative output terminal 5 are fixed.

  In the present embodiment, a convex portion 602 a that is received in the concave portion 305 of the liquid stopper is formed in the lower portion of the package 602, and the package 602 is in the state where the convex portion 602 a is received in the concave portion 305 of the liquid stopper 3. 3 is fixed by appropriate means.

  The means for fixing the package 602 to the liquid stopper 3 may be adhesion or screw connection. When the package 602 is screwed to the liquid stopper 3, a female screw and a male screw are formed on the inner periphery of the recess 305 of the liquid stopper and the outer periphery of the protrusion 602a of the package, respectively, and these screws are screwed together.

  The liquid stopper 3 is provided with an exhaust port 306, which is provided at a position that does not hinder the mounting of the package 601 of the battery state determination module 6 (a position that is not blocked by the package 601). .

  Further, a ring-shaped terminal fitting attached to the end portions of both connecting conductors, in which strip-like (lead-like) conductors having a sufficient thickness are used as the positive-side connecting conductor 603 and the negative-side connecting conductor 604 When 605 and 606 are fitted to the positive electrode side output terminal 4 and the negative electrode side output terminal 5, respectively, the package 602 has the rigidity of the positive electrode side connection conductor 603 and the negative electrode side connection conductor 604, so that the convex portion 602a of the package is a liquid stopper. 3, the positive connection conductor 603 connected to the positive output terminal 4 and the negative output terminal 5 via the ring-shaped terminal fittings 605 and 606, and If the negative electrode side connection conductor 604 has sufficient rigidity to hold the package convex portion 602 a in the concave portion 305 of the liquid stopper 3, 305 simply by fitting the convex portion 602a of the package 602, it is possible to secure the package 602 to the liquid stopper 3.

  In the example shown in FIG. 4, the positive electrode side connection conductor 603 and the negative electrode side connection conductor 604 are bent along the upper surface of the battery case lid 202, but as shown in FIG. The positive electrode side connection conductor 603 and the negative electrode side connection conductor 604 may be arranged so as to extend obliquely between the package 602 and the positive electrode side output terminal 4 and the negative electrode side output terminal 5 of the storage battery.

  As shown in FIG. 2, the determination result display unit 601 provided on the upper portion of the package 602 has an LED display for displaying battery status such as good, caution (requires charging), replacement required, overcharge. There are provided a part 601a, sound generating means 601b for generating an alarm sound when there is an abnormality such as caution (charge required), replacement required, overcharge, etc., a push button switch 601c to be pressed when monitoring the state of the battery, and the like.

  As a monitoring device with the function of diagnosing the state of charge or deterioration of the storage battery and displaying the state, measure the terminal voltage of the storage battery, the temperature of the storage battery, the impedance of the storage battery, or the accumulated value of the usage time of the storage battery, etc. Thus, this data can be obtained from the measured data using a map that gives the relationship between the data and the charge state or the deterioration state. Various types of systems are known, such as those in which a state of charge or a deterioration state is obtained by searching a map, but the monitoring apparatus used in the present invention may be of any type.

  In the above example, the concave portion 305 is provided on the upper portion of the liquid stopper 3 and the convex portion 602a that is received by the concave portion 305 is provided on the package 602 of the battery state determination module. What is necessary is just to provide a convex part in the upper part of the liquid stopper 3, and provide a concave part in the lower part of the package 602, and you may make it fit both.

  The battery state determination module may be configured such that the package 602 forms a part of a plug that closes the through hole provided in the lid 202 of the battery case 2, and the package fixing structure is not necessarily uneven with the liquid plug. It is not limited to the case where the positioning is fixed by the fitting structure.

  In the above embodiment, the package 602 of the battery state determination module is configured separately from the liquid stopper 3, but both can be integrally formed.

  In the above embodiment, the package of the battery state determination module is provided so as to form a part of the liquid stopper, but the package of the battery state determination module is provided so as to form a part of the plug other than the liquid stopper. May be.

  For example, in a sealed lead-acid battery, in order to inject an electrolytic solution into each cell chamber in the battery case, a plurality of through-holes each opened in a plurality of cell chambers in the battery case are provided, and the electrolytic solution is injected. Later, these through holes may be closed with a sealing plug. If such a sealing plug is provided, the battery state determination module package is fixed to one of them, or Alternatively, they can be provided integrally.

  Moreover, when the indicator which displays the fall of the electrolyte level in the battery case of a storage battery is attached, the package of a battery state determination module can be provided so that it may make a part of this indicator.

It is a top view of the battery state determination module used by one Embodiment of this invention. It is an enlarged plan view of the package of the battery state determination module used in the embodiment. It is the front view which showed the battery state determination module used with the embodiment with the liquid stopper attached to the battery case of a storage battery. It is sectional drawing which showed an example of the state which attached the battery state determination module to the battery case of the storage battery in the same embodiment. It is sectional drawing which showed the other example of the state which attached the battery condition determination module to the battery case of the storage battery in the same embodiment.

DESCRIPTION OF SYMBOLS 1 Storage battery 2 Battery case 202 Battery case lid 3 Liquid stopper 4 Positive electrode side output terminal 5 Negative electrode side output terminal 6 Battery state determination module 601 Judgment result display part 602 Package 603 Positive electrode side connection conductor 604 Negative electrode side connection conductor 605,606 Terminal fitting 7,8 Terminal fittings attached to the battery output cable

Claims (4)

A battery power generation element composed of a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution is housed in a battery case, and positive and negative output terminals are attached to the battery case cover, and a through hole that is closed by a plug is provided. At least one element provided in the lid and necessary for determining a battery state is accommodated in a package provided with a determination result display unit, and the elements in the package are output to the positive output terminal and the negative output In a storage battery in which a battery state determination module formed by pulling out a positive electrode side connection conductor and a negative electrode side connection conductor for connecting to terminals to the outside from the package is attached to the lid of the battery case,
The battery state determination module has its package fixed to a plug that closes a through hole provided in the lid of the battery case,
A storage battery characterized by A battery power generation element composed of a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution is housed in a battery case, and positive and negative output terminals are attached to the battery case cover, and a through hole that is closed by a plug is provided. At least one element provided in the lid and necessary for determining a battery state is accommodated in a package provided with a determination result display unit, and the elements in the package are output to the positive output terminal and the negative output In a storage battery in which a battery state determination module formed by pulling out a positive electrode side connection conductor and a negative electrode side connection conductor for connecting to terminals to the outside from the package is attached to the lid of the battery case,
One of the plugs for closing the through hole provided in the lid of the battery case is a determination module fixing plug, and a recess is formed at the upper end of the determination module fixing plug,
The battery state determination module has a convex portion at the bottom of the package, the convex portion is positioned by being received in the concave portion, and is fixed to the determination module fixing plug.
A storage battery characterized by A battery power generation element composed of a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution is housed in a battery case, and positive and negative output terminals are attached to the battery case cover, and a through hole that is closed by a plug is provided. At least one element provided in the lid and necessary for determining a battery state is accommodated in a package provided with a determination result display unit, and the elements in the package are output to the positive output terminal and the negative output In a storage battery in which a battery state determination module formed by pulling out a positive electrode side connection conductor and a negative electrode side connection conductor for connecting to terminals to the outside from the package is attached to the lid of the battery case,
A package of the battery state determination device is integrally formed in one of the plugs for closing the through hole provided in the lid of the battery case;
A storage battery characterized by   Ring-shaped terminal fittings are respectively attached to the terminal portions of the positive electrode side connecting conductor and the negative electrode side connecting conductor drawn from the battery state determination module, and are respectively attached to the terminal portions of the positive electrode side connecting conductor and the negative electrode side connecting conductor. The storage battery according to any one of claims 1, 2, and 3, wherein ring-shaped terminal fittings are respectively fitted and connected to the positive output terminal and the negative output terminal.

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