A single-cell centralized exhaust valve-regulated lead-acid battery

Abstract

The utility model provides a valve-regulated lead-acid battery with centralized exhaust of a single cell, belonging to the technical field of lead-acid batteries, comprising a plurality of cells and a battery cover, with a plurality of injection holes provided on the battery cover; a gas connection channel is provided near the center of the upper and lower end surfaces of the battery cover, the gas connection channel sequentially connects the plurality of injection holes corresponding to the gas-connected cells, a vent hole connected to the exhaust cell is provided at the lower end of the gas connection channel, an exhaust duct is transversely provided in the battery cover, the injection hole corresponding to the exhaust cell is connected to the outside through the exhaust duct and the air filter, the injection hole of the gas-connected cell is provided with a sealing plug without a valve core, and the injection hole of the exhaust cell is installed with a sealing plug with a valve core. The utility model provides a valve-regulated lead-acid battery with centralized exhaust of a single cell, which only uses a sealing plug with a valve core, can greatly reduce costs, exhaust all cells synchronously, and prevent the lagging cells from being over-exhausted and affecting the service life of the entire battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and more specifically, relates to a valve-controlled lead-acid battery with single-cell centralized exhaust. Background Art

[0002] Valve-regulated lead-acid batteries are widely used in automobile start-stop systems due to their excellent characteristics such as maintenance-free and long life. Different from ordinary flooded lead-acid batteries, each cell of a valve-regulated lead-acid battery has a sealing plug with a valve core (instead of the exhaust cap of a flooded battery), which can ensure that there is a certain pressure inside the battery cell during use (to ensure the normal oxygen reduction reaction of the AGM battery). When the internal pressure exceeds the pressure limit of the sealing plug, it is necessary to release the pressure through the internal valve core, otherwise it is easy to cause deformation of the battery shell and create safety risks. Therefore, the sealing plug with a valve core is a necessary component of the valve-regulated lead-acid battery. There are two problems with this structural design: Problem 1. The sealing plug is a precision component on the battery. Each battery requires multiple sealing plugs with valve cores, and the battery cost is relatively high; Problem 2. Each cell sealing plug works independently, and the life of the first cell to fail determines the life of the entire battery, so the consistency requirements of the sealing plug are very high. Utility Model Content

[0003] The utility model aims to provide a valve-regulated lead-acid battery with centralized exhaust of a single cell, aiming to solve the problem that conventional batteries have high costs for arranging multiple sealing plugs with valve cores; the sealing plugs of the single cells work independently, and the lagging single cells are over-exhausted, thus affecting the service life of the entire battery.

[0004] To achieve the above object, the technical solution adopted by the utility model is: to provide a valve-regulated lead-acid battery with centralized exhaust of a single cell, comprising a plurality of cells arranged in sequence and a battery cover arranged on the upper ends of the plurality of cells, wherein the battery cover is provided with a plurality of injection holes, and the plurality of injection holes are connected to the plurality of cells in a one-to-one correspondence;

[0005] The rightmost cell is defined as an exhaust cell, and the remaining cells are defined as gas-connected cells. An air-connecting channel is provided between adjacent cells, and the air-connecting channel is connected to the injection holes corresponding to each cell in sequence. A vent is provided in the air-connecting channel corresponding to the exhaust cell, and an exhaust duct is horizontally provided in the battery cover corresponding to the exhaust cell. The left end of the exhaust duct is connected to the injection hole corresponding to the exhaust cell, and the right end of the exhaust duct extends to the right side wall of the battery cover to communicate with the outside world. The injection hole corresponding to the gas-connected cell is provided with a sealing plug without a valve core, and the injection hole corresponding to the exhaust cell is installed with a sealing plug with a valve core.

[0006] In a possible implementation, a left end of the air connection channel extends the left side wall of the battery cover to form an air hole, and an airway plug is installed in the air hole.

[0007] In a possible implementation, a right end of the gas connection channel extends to the corresponding liquid injection hole of the exhaust cell to form a connecting hole, and a blocking block is provided in the connecting hole.

[0008] In a possible implementation, the number of the cells is six, the last cell is an exhaust cell, and the remaining five cells are gas-connecting cells.

[0009] The beneficial effect of a valve-regulated lead-acid battery with centralized exhaust of a single cell provided by the utility model is that: compared with the prior art, the gas of the multiple connected cells on the left side enters the gas connection channel through the lower port of the injection hole, and the gas is connected between the cells inside the battery through the gas connection channel and the vent hole. When the air pressure in the battery is greater than the safety pressure, the valve core of the sealing plug of the exhaust cell opens, and the gas enters the exhaust duct through the lower port of the injection hole above the exhaust cell, and is finally discharged after the exhaust duct and the air filter; when the air pressure drops to the safety pressure, the valve core of the sealing plug closes, and the battery is in a closed state as a whole. The valve-regulated lead-acid battery with centralized exhaust of a single cell provided by the utility model only uses a sealing plug with a valve core, which can greatly reduce costs. At the same time, all cells are exhausted synchronously, which can alleviate the problem of excessive exhaust of lagging cells and extend the service life of the entire battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A three-dimensional diagram of a battery cover of a valve-regulated lead-acid battery with single-cell centralized exhaust provided by the utility model;

[0012] Figure 2 A bottom view of a battery cover of a single-cell centralized exhaust valve-regulated lead-acid battery provided by the utility model;

[0013] Figure 3 The utility model provides a three-dimensional diagram of a single-cell centralized exhaust valve-regulated lead-acid battery.

[0014] Description of reference numerals:

[0015] 1. Battery cover; 2. Terminal; 3. Liquid filling hole; 4. Sealing plug without valve core; 5. Sealing plug with valve core; 6. Gas channel; 7. Vent hole; 8. Exhaust duct; 9. Airway plug; 10. Sealing block. DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0018] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0019] See also Figures 1 to 3 Now, a valve-regulated lead-acid battery with single-cell centralized exhaust provided by the utility model is described. A valve-regulated lead-acid battery with centralized exhaust of cells comprises a plurality of cells arranged in sequence and a battery cover 1 arranged at the upper ends of the plurality of cells, the battery cover 1 is provided with a plurality of injection holes 3, and the plurality of injection holes 3 are connected to the plurality of cells one by one; the rightmost cell is defined as an exhaust cell, and the remaining cells are defined as gas-connected cells, and a gas connection channel 6 is provided between adjacent cells, and the gas connection channel 6 is connected to the injection holes 3 corresponding to the cells in sequence, and a vent hole 7 is provided in the gas connection channel 6 corresponding to the exhaust cell, but the side surface remains closed to the injection hole 3, an exhaust channel 8 is transversely provided in the battery cover 1 corresponding to the exhaust cell, a left end of the exhaust channel 8 is connected to the injection hole 3 corresponding to the exhaust cell, and a right end of the exhaust channel 8 extends to the right side wall of the battery cover 1 to be connected to the outside, a sealing plug 4 without a valve core is provided in the injection hole 3 corresponding to the gas-connected cell, and a sealing plug 5 with a valve core is installed in the injection hole 3 corresponding to the exhaust cell.

[0020] The utility model provides a valve-regulated lead-acid battery with centralized exhaust of a single cell. Compared with the prior art, the gas of the multiple gas-connected cells on the left side enters the gas connection channel 6 through the lower port of the injection hole 3. The gas is connected between the cells inside the battery through the gas connection channel 6 and the vent hole 7. When the air pressure in the battery is greater than the safety pressure, the valve core of the sealing plug 5 with a valve core of the exhaust cell opens, and the gas enters the exhaust channel 8 through the lower port of the injection hole 3 above the exhaust cell, and is finally discharged through the air filter; when the air pressure drops to the safety pressure, the valve core of the sealing plug 5 with a valve core closes, and the battery is in a closed state as a whole. The utility model provides a valve-regulated lead-acid battery with centralized exhaust of a single cell. It only uses one sealing plug 5 with a valve core, which can greatly reduce costs. At the same time, all cells are exhausted synchronously, which can alleviate the problem of excessive exhaust of lagging cells and extend the service life of the entire battery.

[0021] See also Figure 3 The left end of the gas connection channel 6 extends from the left wall of the battery cover 1 to form an air hole, in which an airway plug 9 is installed. The right end of the gas connection channel 6 extends to the corresponding injection hole 3 of the exhaust cell to form a connecting hole, in which a blocking block 10 is arranged.

[0022] Specifically, the upper end surface of the battery cover 1 is provided with positive and negative terminals 2, and the adjacent cells of the battery cover 1 are transversely provided with through holes, and the two ends of the through holes are respectively located on the left and right walls of the battery cover 1, and the through holes are the above-mentioned gas connection channel 6 and exhaust duct 8. An airway plug 9 is installed at the left end of the gas connection channel 6 to close the left end of the gas connection channel 6, and the gas in the cell can only move to the right. The blocking block 10 is located in the left connecting hole of the gas connection channel 6 connecting the injection hole 3 corresponding to the exhaust cell to close the gas connection channel 6 and the injection hole 3 corresponding to the exhaust cell, so as to prevent the gas connection channel 6 from being directly connected to the outside through the exhaust valve 5 with a valve core and the exhaust duct 8, resulting in the failure of the control of the exhaust valve 5 with a valve core.

[0023] For conventional vent holes 7, their shape and size are subject to ensuring normal exhaust, and no specific regulations are given.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-cell centralized exhaust valve-regulated lead-acid battery, characterized in that: It comprises a plurality of cells arranged in sequence and a battery cover (1) arranged on the upper ends of the plurality of cells, the battery cover (1) being provided with a plurality of injection holes (3), the plurality of injection holes (3) being connected to the plurality of cells in a one-to-one correspondence; The rightmost cell is defined as an exhaust cell, and the remaining cells are defined as gas-connected cells. An air-connected channel (6) is provided between adjacent cells. The air-connected channel (6) is connected to the injection holes (3) corresponding to each cell in sequence. A vent hole (7) is provided in the air-connected channel (6) corresponding to the exhaust cell. An exhaust channel (8) is transversely provided in the battery cover corresponding to the exhaust cell. The left end of the exhaust channel (8) is connected to the injection hole (3) corresponding to the exhaust cell, and the right end of the exhaust channel (8) extends to the right side wall of the battery cover and is connected to the outside. The injection hole (3) corresponding to the gas-connected cell is provided with a sealing plug (4) without a valve core, and the injection hole (3) corresponding to the exhaust cell is installed with a sealing plug (5) with a valve core.

2. A single-cell centralized exhaust valve-regulated lead-acid battery as claimed in claim 1, characterized in that: The left end of the air connection channel (6) extends the left wall of the battery cover (1) to form an air hole, and an airway plug (9) is installed in the air hole.

3. A single-cell centralized exhaust valve-regulated lead-acid battery as claimed in claim 1, characterized in that: One right end of the gas connection channel (6) extends to the corresponding liquid injection hole (3) of the exhaust cell to form a connecting hole, and a blocking block (10) is arranged in the connecting hole.

4. A single-cell centralized exhaust valve-regulated lead-acid battery as claimed in claim 1, characterized in that: The number of the cells is six, the last cell is an exhaust cell, and the remaining five cells are gas communication cells.

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