CN217387264U

CN217387264U - Structure for increasing available total amount of electrolyte of existing lean-liquid type lead-acid storage battery

Info

Publication number: CN217387264U
Application number: CN202122946842.4U
Authority: CN
Inventors: 谢钢; 杨国兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-09-06
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a structure for increasing the total available amount of electrolyte of the prior poor liquid type lead-acid storage battery, which comprises a battery shell, a battery end cover, a pole group, a pad underframe and a liquid absorption pad plate; the battery shell is connected with the battery end cover in a sealing mode, the base frame is located in the battery shell and placed at the bottom of the battery shell, the base frame comprises a supporting plate and supporting legs, one end of each supporting leg is connected with one side of the corresponding supporting plate, the other end of each supporting leg is abutted to the bottom surface of the battery shell, the supporting plate, the supporting legs and the bottom surface of the battery shell are jointly arranged in a surrounding mode to form a liquid storage cavity, electrolyte is filled in the liquid storage cavity, openings are formed in the two ends of the supporting plate respectively, the liquid absorption base plate comprises a main plate and extending portions at the two ends of the main plate, the main plate is attached to the supporting plate, the extending portions enter the liquid storage cavity through the openings, and the extending portions are soaked in the electrolyte; the polar group comprises a positive plate, a negative plate and a partition board, the positive plate and the negative plate are separated by the partition board, the polar group is placed above the liquid absorption backing plate, and the partition board and the liquid absorption backing plate are both made of superfine glass fibers.

Description

Structure for increasing available total amount of electrolyte of existing lean liquid type lead-acid storage battery

Technical Field

The utility model relates to a battery technical field, in particular to increase structure of the usable total amount of current poor liquid formula lead acid battery electrolyte.

Background

Without deep discharge control, lean-flooded lead acid batteries have been invented to achieve higher service life and higher gravimetric to energy ratios of lead acid batteries.

The storage battery is characterized in that an AGM separator with acid-wetting capability is used as an electrode separator, a rubber valve is used as a pressure control tool to retain oxygen generated in the reaction process, a large amount of oxygen is separated out when the cell voltage of the battery reaches 2.30V in the charging process of the battery, the oxygen generated by water decomposition of a positive electrode is transmitted to a negative electrode through a Z-shaped channel in the electrode separator, and the concentration of sulfuric acid near a positive active material is increased due to consumption of water near the positive electrode. Oxygen diffused from the anode reacts with the cathode lead to generate lead oxide, the lead oxide reacts with sulfuric acid to generate lead sulfate and water, and the water is diffused to the anode and the oxygen is diffused to the cathode to achieve circulation closed loop under the action of the concentration gradient of the electrolyte.

The key to whether a battery is durable is whether there is enough H to be maintained ₂ SO ₄ An electrolyte with water. While maintaining sufficient H ₂ SO ₄ The key to the electrolyte with water is that the oxygen recombination reaction is the reverse reaction of the oxygen evolution reaction, which occurs at potentials below a certain voltage. However, oxygen precipitated in the positive electrode is easily reduced by the reaction with the active material in the negative electrode. The recombination reaction in which oxygen gas precipitated from the positive electrode reaches the negative electrode during battery charging is a side reaction of the battery, but is very critical for VRLA batteries. By using the principle, the VRLA battery can lead oxygen generated by the anode to reach the cathode through a certain channel for recombination, thereby achieving the purpose of internal oxygen circulationTherefore, if the inside of the battery is short of such oxygen channels, the progress of oxygen reduction must be greatly prevented. Experiments prove that the relation between the charge quantity of the battery with different saturation separators and the terminal voltage of the battery is as follows: the higher the separator saturation, the faster the battery recharge voltage rises.

After long-time observation of the existing poor liquid type product, the failure mode of the product is mainly that the polar plate is overheated to expand and break caused by drying of the electrolyte, after a certain service time, the electrolyte is almost completely consumed, the positive active substance and the positive grid are corroded very seriously, and the poor liquid type battery is particularly suitable for the poor liquid type battery for starting and stopping an automobile, has lower internal gas holding pressure than a common fixed poor liquid type battery, is used as starting and stopping power, has higher service frequency, is based on the condition of high-frequency secondary use and higher service environment temperature, and has to use lower opening and closing rubber valve pressure from the safety point of view. But such an arrangement would allow the electrolyte within to be depleted more quickly.

Therefore, there is a great need for improvement of the corresponding products to extend the exhaustion time of the electrolyte, thereby increasing the service life thereof.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a structure that increases the usable total amount of current poor liquid formula lead acid battery electrolyte, under the condition that does not change current battery size specification, ensure the effective space in furthest using battery, store and call more electrolyte to ensure that its limited oxygen combined capacity can go on.

The technical scheme of the utility model is that: a structure for increasing the total available amount of electrolyte of the existing poor liquid type lead-acid storage battery comprises a battery shell, a battery end cover, a pole group, a pad underframe and a liquid absorption pad plate;

the battery shell is hermetically connected with a battery end cover, the base frame is positioned in the battery shell and is placed at the bottom of the battery shell, the base frame comprises a supporting plate and supporting legs, one end of each supporting leg is connected with one side of the supporting plate, the other end of each supporting leg is abutted against the bottom surface of the battery shell, the supporting plate, the supporting legs and the bottom surface of the battery shell are jointly enclosed to form a liquid storage cavity, electrolyte is filled in the liquid storage cavity, openings are formed in two ends of the supporting plate respectively, the liquid absorption base plate comprises a main plate and extending parts at two ends of the main plate, the main plate is attached to the supporting plate, the extending parts enter the liquid storage cavity through the openings, and the extending parts are soaked in the electrolyte;

the pole group comprises a positive plate, a negative plate and a partition board, the positive plate and the negative plate are separated by the partition board, the pole group is placed above the liquid absorption backing plate, and the partition board and the liquid absorption backing plate are both made of superfine glass fibers.

The utility model discloses an increase the structure of the available total amount of current poor liquid formula lead acid battery electrolyte, under the circumstances that does not change current battery size specification, through set up pad chassis and imbibition backing plate in the battery inside, the bottom surface of backup pad, supporting legs and battery case encloses jointly and establishes and forms the stock solution chamber, the stock solution intracavity is filled with electrolyte, imbibition backing plate part soaks in electrolyte, when the baffle appears inhaling when moist not enough, electrolyte passes through capillary phenomenon, from imbibition backing plate to baffle conveying electrolyte, realize the degree of moisturizing of increment electrolyte to monomer baffle; the pad chassis is provided with openings through two ends, and the openings only allow the liquid absorption base plate to pass through, so that the incremental electrolyte placed in the liquid storage cavity can be prevented from directly impacting the partition plate, and the looseness of the partition plate is avoided.

Further, the extension includes vertical linkage segment and horizontal segment, the end connection of the one end of vertical linkage segment and mainboard, and the other end is connected with the horizontal segment, and the horizontal segment extends towards the stock solution intracavity. Through setting up the horizontal segment, the horizontal segment extends and immerses in electrolyte towards the stock solution intracavity in, ensures that the imbibition backing plate has sufficient imbibition ability.

Furthermore, the horizontal section is attached to the bottom surface of the battery shell. The bottom surface of horizontal segment laminating battery case along with electrolyte consumes gradually, and the horizontal segment also soaks with electrolyte all the time, avoids electrolyte to consume and influences the imbibition ability of imbibition backing plate.

Further, the bottom cushion frame is made of polypropylene plastics. The polypropylene material has acid resistance, can be soaked in the electrolyte for a long time, and prevents the electrolyte from corroding the bottom frame of the pad.

Furthermore, a positive pole column and a negative pole column are arranged on the battery end cover and are respectively electrically connected with the pole group.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses a structure of the usable total amount of current poor liquid formula lead acid battery electrolyte of increase, on the basis that does not change current battery structure, through at inside pad chassis and the imbibition backing plate of setting up of battery, the backup pad, supporting legs and battery case's bottom surface encloses jointly and establishes the formation stock solution chamber, the stock solution intracavity is filled there is electrolyte, imbibition backing plate part soaks in electrolyte, when the baffle appears inhaling moist not enough, electrolyte passes through capillary phenomenon, from imbibition backing plate to baffle conveying electrolyte, realize the degree of moisturizing of increment electrolyte to monomer baffle.

The utility model discloses a structure of the usable total amount of current poor liquid formula lead acid battery electrolyte of increase, through the inner structure who changes lead acid battery, under the condition that does not change current battery size specification, increased the structure of storing and using increment electrolyte, improved because the overheated and frequent charge-discharge problem that brings lead acid battery life and shorten of external environment.

The utility model discloses an increase the structure of the usable total amount of present barren liquid formula lead acid battery electrolyte, can be applied to the great all barren liquid formula lead acid battery of monomer surplus, especially use the frequency higher, the higher product of service environment temperature, for example, solar energy storage battery that tropical area or desert area used.

Drawings

Fig. 1 is a top view of the structure of the present invention for increasing the total amount of the electrolyte of the lean-type lead-acid battery.

Fig. 2 is a cross-sectional view of the structure of the present invention for increasing the total amount of the electrolyte available in the lean-type lead-acid storage battery.

Fig. 3 is a cross-sectional view of another view angle of the structure of the present invention for increasing the total amount of electrolyte available in the conventional lean-type lead-acid battery.

Fig. 4 is a schematic structural view of the bottom frame of the present invention.

Fig. 5 is a cross-sectional view taken along line a-a of fig. 4.

Fig. 6 is a cross-sectional view taken along line B-B of fig. 5.

Fig. 7 is a side view of the absorbent pad of the present invention.

The battery comprises a battery shell 1, a liquid storage cavity 11, a battery end cover 2, a positive pole 21, a negative pole 22, a pole group 3, a pad base frame 4, a support plate 41, support legs 42, an opening 43, a liquid absorption base plate 5, a main plate 51, a vertical connecting section 52 and a horizontal section 53.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Examples

As shown in fig. 1 and 2, the present embodiment provides a structure for increasing the total amount of electrolyte available in the conventional lean-type lead-acid battery, which includes a battery case 1, a battery end cap 2, a pole group 3, a bottom bracket 4 and a liquid-absorbing pad 5.

As shown in fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, battery shell and battery end cover sealing connection, the bedding frame is located in the battery shell, the bedding frame is placed in the bottom of battery shell, the bedding frame comprises a supporting plate 41 and supporting legs 42, one end of each supporting leg is connected with one side of the supporting plate, the other end of each supporting leg is abutted to the bottom surface of the battery shell, the supporting plate, the supporting legs and the bottom surface of the battery shell jointly enclose to form a liquid storage cavity 11, electrolyte is filled in the liquid storage cavity, openings 43 are respectively arranged at two ends of the supporting plate, the liquid absorption padding plate comprises an extending part at two ends of a main plate 51 and at two ends of the main plate, the main plate is attached to the supporting plate, the extending part enters the liquid storage cavity through the openings, and the extending part is soaked in the electrolyte.

As shown in fig. 1, fig. 2 and fig. 3, utmost point group includes positive plate, negative plate and baffle, and positive plate and negative plate are separated to the baffle, and utmost point group places in imbibition backing plate top, is equipped with anodal post 21 and negative pole post 22 on the battery end cover, anodal post and negative pole post respectively with utmost point group electric connection, the baffle all adopts superfine glass fiber to make with the imbibition backing plate, fills up the chassis and adopts polypropylene plastics to make, and polypropylene materials acid resistance can soak in electrolyte for a long time, avoids electrolyte to corrode and fills up the chassis.

As shown in fig. 2, 3 and 7, in the present embodiment, the extending portion includes a vertical connecting section 52 and a horizontal section 53, one end of the vertical connecting section is connected with the end of the main board, the other end is connected with the horizontal section, and the horizontal section extends into the liquid storage cavity. Through setting up the horizontal segment, the horizontal segment extends and immerses in electrolyte towards the stock solution intracavity, ensures that the imbibition backing plate has sufficient imbibition ability. The horizontal section is attached to the bottom surface of the battery shell. The horizontal segment is attached to the bottom surface of the battery shell, along with the gradual consumption of electrolyte, the horizontal segment is always soaked with the electrolyte, and the liquid absorption capacity of the liquid absorption base plate is prevented from being influenced by the consumption of the electrolyte.

Because the battery inner space size of difference is inequality, among the practical application, the specification of filling up chassis and imbibition backing plate sets up according to the space in the battery, only need ensure under the prerequisite that does not change the original specification of battery, the space in the battery can hold fill up chassis and imbibition backing plate can.

The utility model discloses a structure of the usable total amount of increase current poor liquid formula lead acid battery electrolyte, under the circumstances that does not change current battery size specification, through set up pad chassis and imbibition backing plate in the battery, the bottom surface of backup pad, supporting legs and battery case encloses jointly establishes and forms the stock solution chamber, the stock solution intracavity is filled with electrolyte, imbibition backing plate part soaks in electrolyte, when the baffle appears inhaling moist not enough, electrolyte passes through capillary phenomenon, conveys electrolyte to the baffle from the imbibition backing plate, realizes the degree of moisturizing of increment electrolyte to monomer baffle; the pad chassis is provided with openings through two ends, and the openings only allow the liquid absorption base plate to pass through, so that the incremental electrolyte placed in the liquid storage cavity can be prevented from directly impacting the partition plate, and the looseness of the partition plate is avoided.

As described above, the present invention can be realized well, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are intended to be covered by the scope of the claims of the present invention.

Claims

1. A structure for increasing the available total amount of electrolyte of the existing poor liquid type lead-acid storage battery is characterized by comprising a battery shell, a battery end cover, a pole group, a pad underframe and a liquid absorption pad plate;

the battery shell is connected with the battery end cover in a sealing mode, the base frame is located in the battery shell and placed at the bottom of the battery shell, the base frame comprises a supporting plate and supporting legs, one end of each supporting leg is connected with one side of the corresponding supporting plate, the other end of each supporting leg is abutted to the bottom surface of the battery shell, a liquid storage cavity is formed by the supporting plate, the supporting legs and the bottom surface of the battery shell in a surrounding mode, electrolyte is filled in the liquid storage cavity, openings are formed in the two ends of the supporting plate respectively, the liquid absorption base plate comprises a main plate and extension portions at the two ends of the main plate, the main plate is attached to the supporting plate, the extension portions enter the liquid storage cavity through the openings, and the extension portions are soaked in the electrolyte;

2. The structure for increasing the total available amount of electrolyte in an existing barren liquid type lead acid battery according to claim 1, wherein the extension part comprises a vertical connecting section and a horizontal section, one end of the vertical connecting section is connected with the end part of the main board, the other end of the vertical connecting section is connected with the horizontal section, and the horizontal section extends towards the inside of the liquid storage cavity.

3. The structure for increasing the total available electrolyte of an existing flooded lead acid battery of claim 2, wherein the horizontal segment is attached to the bottom surface of the battery case.

4. The structure for increasing the total available electrolyte of an existing flooded lead acid battery of claim 1, wherein the pad chassis is made of polypropylene plastic.

5. The structure for increasing the available total amount of the electrolyte of the existing barren solution type lead-acid storage battery according to claim 1, wherein a positive pole column and a negative pole column are arranged on the battery end cover, and the positive pole column and the negative pole column are respectively electrically connected with the pole group.