JPH08115738A - Lead-acid battery - Google Patents

Abstract

PURPOSE: To provide a lead-acid battery with safety, capable of neutralizing an electrolyte with a neutralizer even if a container is accidentally broken by forming a sealed space on the outside of the container of the lead-acid battery and filling the neutralizer in the space. CONSTITUTION: A lead-acid battery comprises a positive plate comprising lead, a negative plate, an electrolyte containing sulfuric acid solution, and a container for housing them. Outside cases 2, 3 are installed so as to form a sealed space 5 on the outside of the container 1. The outside cases 2, 3 may be formed in multi-layers or a single layer. A handle 4 is formed at the upper end of the outside case 3. A neutralizer for neutralizing the electrolyte containing at least sulfuric acid, leaked when the container 1 is accidentally broken is filled in the space 5. By neutralizing the electrolyte with the neutralizer, even if the electrolyte is attached to a body or clothes, a burn or injury can be avoided. In addition, the neutralizer is served as a cushion to protect the container 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead storage battery mounted on an electric bicycle or the like and used as a power source.

[0002]

2. Description of the Related Art Conventionally, a lead-acid battery mounted on an electric bicycle or the like and used as a power source includes a positive electrode plate made of at least lead, a negative electrode plate, an electrolytic solution containing at least a sulfuric acid solution, and these positive electrodes. A plate, a negative electrode plate, and a battery case containing an electrolytic solution.

[0003]

However, in the above-mentioned conventional example, when the battery case is damaged by vibration or the like, the electrolytic solution containing sulfuric acid leaks out, causing burns to the human body or damage to clothes. There is a problem in that there are cases where Therefore, the present invention is mounted on an electric bicycle or the like and is used as a power source, and even when the battery case is damaged, the electrolytic solution containing the sulfuric acid solution is neutralized to cause burns to the human body or clothes. It is an object of the present invention to provide a lead acid battery that prevents damage from occurring.

[0004]

The present invention provides a positive electrode plate made of at least lead, a negative electrode plate, an electrolytic solution containing at least a sulfuric acid solution, the positive electrode plate, the negative electrode plate and the electrolytic solution. In order to improve a lead-acid battery having an internal battery case, an outer case is provided so as to form a sealed space on the outside of the battery case, the battery case is damaged, and the electrolytic solution is added to the battery case. The lead-acid battery is characterized in that the space is filled with a neutralizing agent for neutralizing the electrolytic solution when the space leaks.

[0005]

According to the present invention, an outer case is provided so as to form a sealed space on the outside of the battery case, the battery case is damaged, and when the electrolytic solution containing at least sulfuric acid solution leaks from the battery case,
A neutralizing agent for neutralizing the electrolytic solution is filled in this space. Since the electrolytic solution containing at least sulfuric acid solution is neutralized, even if not only the battery case but the outer case is damaged, the neutralized electrolytic solution adheres to the human body or clothes, causing human burns. Alternatively, damage to clothes is prevented. Further, since the space between the battery case and the outer case is filled with the neutralizing agent, the neutralizing agent serves as a kuntion and protects the battery case.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on its embodiments with reference to the drawings. FIG. 1 is a perspective view including a partial cross section of an embodiment of the present invention. The lead-acid battery has a positive electrode plate made of at least lead and a negative electrode plate, although the inside is not shown.
It has an electrolytic solution containing at least a sulfuric acid solution, a positive electrode plate, a negative electrode plate, and a battery case 1 containing the electrolytic solution.
The positive electrode plate is made of at least lead and naturally includes other members. Further, the electrolytic solution may be any one as long as it contains at least a sulfuric acid solution, and naturally includes a gelled material to which silicic acid anhydride or the like is added.

Further, outer cases 2 and 3 are provided so as to form a closed space 5 outside the battery case 1. The outer cases 2 and 3 are configured in multiple layers, but may be configured in a single layer. A handle 4 is provided on the upper end of the outer case 3. Next, in the case where the battery case 1 is damaged and the electrolytic solution containing at least the sulfuric acid solution leaks from the battery case 1, the space 5 is filled with a neutralizing agent that neutralizes the electrolytic solution. The neutralizing agent is selected from alkali metal carbonates, alkali metal hydrogen carbonates, alkaline earth metal carbonates, alkaline earth metal hydrogen carbonates, and examples thereof include lime, sodium hydrogen carbonate, magnesium salt, and hydroxide. Although it is made of sodium or the like, it is not limited to these as long as it neutralizes an electrolytic solution containing at least a sulfuric acid solution.

[0008]

As described above, the present invention is mounted on an electric bicycle or the like and used as a power source, and even when the battery case is damaged, the electrolytic solution containing the sulfuric acid solution is neutralized and the human body The effect of preventing burns or damage to clothes is obtained. Further, since the space between the battery case and the outer case is filled with the neutralizing agent, the neutralizing agent serves as a kuntion and protects the battery case.

[Brief description of drawings]

FIG. 1 is a perspective view including a partial cross section of an embodiment of the present invention.

[Explanation of symbols]

 1 battery case 2, 3 outer case 4 handle 5 space

Claims (3)

[Claims] 1. A positive electrode plate made of at least lead, a negative electrode plate, an electrolytic solution containing at least a sulfuric acid solution, and a battery case containing the positive electrode plate, the negative electrode plate and the electrolytic solution. In a lead acid battery, an outer case is provided so as to form a sealed space outside the battery case, and when the battery case is damaged and the electrolytic solution leaks from the battery case, the electrolytic solution is neutralized. A lead-acid battery characterized in that the space is filled with a neutralizing agent. 2. The neutralizing agent is an alkali metal carbonate,
Alkali metal bicarbonate, alkaline earth metal carbonate,
The lead-acid battery according to claim 1, which is selected from hydrogen carbonates of alkaline earth metals. 3. The lead acid battery according to claim 1, wherein the outer case is formed in a multi-layer or a single layer.