CN116845442A - Storage battery cover and storage battery - Google Patents

Storage battery cover and storage battery Download PDF

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Publication number
CN116845442A
CN116845442A CN202310851665.2A CN202310851665A CN116845442A CN 116845442 A CN116845442 A CN 116845442A CN 202310851665 A CN202310851665 A CN 202310851665A CN 116845442 A CN116845442 A CN 116845442A
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CN
China
Prior art keywords
acid
chamber
blocking
wall
acid return
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310851665.2A
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Chinese (zh)
Inventor
查立平
吴思斌
李梦楠
张亚振
贾为宾
朱红英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fengfan Co Ltd
Original Assignee
Fengfan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fengfan Co Ltd filed Critical Fengfan Co Ltd
Priority to CN202310851665.2A priority Critical patent/CN116845442A/en
Publication of CN116845442A publication Critical patent/CN116845442A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/06—Lead-acid accumulators
    • H01M10/12—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

The invention provides a storage battery cover and a storage battery, wherein the storage battery cover comprises a first acid return unit and a second acid return unit, and the first acid return unit and the second acid return unit are symmetrical about the central line of the storage battery; the first acid return unit comprises an acid return chamber and an exhaust chamber, a return hole is formed in the bottom wall of the acid return chamber, a first air hole is formed between two adjacent acid return chambers, and a labyrinth flow guide structure is further arranged between the return hole and the first air hole; the exhaust chamber is provided with a second air hole communicated with one of the acid return chambers, and the exhaust chamber is provided with an exhaust hole. According to the invention, by arranging the labyrinth flow guide structure, on one hand, acid liquid can be prevented from flowing to the first air hole, and electrolyte cannot overflow during jolt or inclination. On the other hand can prolong the gas circulation passageway, help the electrolyte liquefaction back to the backward flow hole along maze water conservancy diversion structure that gas carried, solved the vehicle and probably overflowed the problem from the exhaust hole at the electrolyte of battery when jolting or the road surface of slope is driven, improved the safety in utilization of battery.

Description

Storage battery cover and storage battery
Technical Field
The invention belongs to the technical field of storage battery covers, and particularly relates to a storage battery cover and a storage battery.
Background
The battery cover at the top of the lead-acid storage battery is usually provided with an exhaust hole and an air filtering structure so as to exhaust air generated in the working process of the storage battery. When the vehicle runs on a bumpy road surface after the storage battery is mounted on the vehicle, the storage battery can vibrate or incline along with the vehicle, and electrolyte can overflow from the exhaust hole. Electrolyte overflows and can influence the quality and the life of battery to the electrolyte that overflows also has the possibility to produce the corruption to the vehicle, has the potential safety hazard.
Disclosure of Invention
The invention provides a storage battery cover and a storage battery, which aim to solve the problem that electrolyte of the storage battery may overflow from an exhaust hole when a vehicle runs on a bumpy or inclined road surface so as to improve the use safety of the storage battery.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a battery cover, which is arranged at the top of a battery and comprises a first acid return unit and a second acid return unit, wherein the first acid return unit is arranged at the positive electrode side, the second acid return unit is arranged at the negative electrode side, and the first acid return unit and the second acid return unit are symmetrical about the central line of the battery;
the first acid recovery unit comprises:
the acid return chambers are arranged along a first horizontal direction, the first horizontal direction is perpendicular to the central line of the storage battery, the bottom wall of each acid return chamber is provided with a reflux hole which is used for being communicated with an electrolyte cavity of the storage battery, a first air hole is formed between two adjacent acid return chambers, the first air hole is positioned at one side of the acid return chamber away from the reflux hole, and a labyrinth flow guide structure is further arranged between the reflux hole and the first air hole; and
the exhaust chamber is arranged at one side of the acid return chamber, the exhaust chamber and the acid return chamber are arranged along the central line direction of the storage battery and are provided with second air holes communicated with one of the acid return chambers, and the exhaust chamber is provided with an exhaust hole.
In one possible implementation manner, the storage battery cover includes a main cover body and an exhaust cover, the exhaust cover is arranged on the main cover body, the main cover body and the exhaust cover enclose together to form the first acid return unit and the second acid return unit, the main cover body is provided with the backflow hole, and the exhaust cover is provided with the exhaust hole.
In one possible implementation manner, the first acid return unit has three acid return chambers, which are defined as a first acid return chamber, a second acid return chamber and a third acid return chamber in sequence along a first horizontal direction, and the labyrinth flow guide structures which are defined as a first labyrinth flow guide structure, a second labyrinth flow guide structure and a third labyrinth flow guide structure in sequence, and the exhaust chamber is communicated with the second acid return chamber through the second air hole.
In one possible implementation, the first labyrinth guide structure includes:
one end of the first acid blocking wall is connected with one side wall of the first acid return chamber, the other end of the first acid blocking wall extends towards the direction of the exhaust chamber and is spaced from the side wall of the first acid return chamber adjacent to the exhaust chamber to form a first outlet, the first acid blocking wall and the side wall of the first acid return chamber jointly enclose to form a first blocking chamber, and the backflow hole is formed in the bottom wall of the first blocking chamber;
the second acid blocking wall is arranged opposite to the first acid blocking wall, one end of the second acid blocking wall is connected with the other side wall of the first acid return chamber, the other end of the second acid blocking wall extends towards the direction of the exhaust chamber and is spaced from the first acid blocking wall to form a second outlet, and the second acid blocking wall and the side wall of the first acid return chamber are enclosed together to form a second blocking chamber; and
one end of the third acid blocking wall is connected with one side wall of the first acid return chamber, the other end of the third acid blocking wall extends towards the direction of the exhaust chamber and is spaced from the other side wall of the first acid return chamber to form a third outlet, the first acid blocking wall, the second acid blocking wall, the third acid blocking wall and the side wall of the first acid return chamber are enclosed together to form a third blocking cavity, and the third acid blocking wall and the side wall of the first acid return chamber are enclosed together to form a fourth blocking cavity;
the first outlet is communicated with the first blocking cavity and the second blocking cavity, the second outlet is communicated with the second blocking cavity and the third blocking cavity, the third outlet is communicated with the third blocking cavity and the fourth blocking cavity, and the first air hole which is communicated with the first acid return cavity and the second acid return cavity is formed in the side wall of the fourth blocking cavity, which is far away from the third outlet.
In one possible implementation, the bottom wall of the first blocking chamber forms a first backflow ramp, the backflow orifice being at a low point of the first backflow ramp;
the bottom wall of the second blocking cavity forms a second backflow inclined surface, and the first outlet is positioned at the low point of the second backflow inclined surface;
the bottom wall of the third blocking cavity forms a third backflow inclined surface, and the second outlet is positioned at the low point of the third backflow inclined surface;
the bottom wall of the fourth blocking cavity forms a fourth backflow inclined plane, the third outlet is positioned at the low position of the fourth backflow inclined plane, and the first air hole is positioned at the high position of the fourth backflow inclined plane.
In one possible implementation, the second labyrinth guide structure includes:
one end of the fourth acid blocking wall is connected with the side wall of the second acid return chamber adjacent to the exhaust chamber, the other end of the fourth acid blocking wall extends in a direction away from the exhaust chamber and is spaced from one side wall of the second acid return chamber to form a fourth outlet, the fourth acid blocking wall and the side wall of the second acid return chamber are jointly enclosed to form a fifth blocking chamber, and the backflow hole is formed in the bottom wall of the fifth blocking chamber;
one end of the fifth acid blocking wall is connected with the fourth acid blocking wall, the other end of the fifth acid blocking wall extends in a direction far away from the exhaust chamber and is spaced from the other side wall of the second acid return chamber to form a fifth outlet, the fifth acid blocking wall and the fourth acid blocking wall jointly form a Y-shaped structure, the side walls of the fifth acid blocking wall, the fourth acid blocking wall and the second acid return chamber jointly enclose to form a sixth blocking chamber, and the side wall of the sixth blocking chamber adjacent to the exhaust chamber is provided with the second air hole; and
two sixth acid blocking walls are oppositely arranged, one end of each sixth acid blocking wall is connected with one side wall of the second acid return chamber, the other end of each sixth acid blocking wall is close to the exhaust chamber and is spaced to form a sixth outlet, the two sixth acid blocking walls, the side wall of the second acid return chamber, the fourth acid blocking wall and the fifth acid blocking wall jointly enclose to form a seventh separation chamber, and the two sixth acid blocking walls and the side wall of the second acid return chamber jointly enclose to form an eighth separation chamber;
the fourth outlet is communicated with the fifth blocking cavity and the seventh blocking cavity, the fifth outlet is communicated with the sixth blocking cavity and the seventh blocking cavity, the sixth outlet is communicated with the seventh blocking cavity and the eighth blocking cavity, and the side wall of the eighth blocking cavity is provided with the first air hole.
In one possible implementation, the bottom wall of the fifth blocking chamber forms a fifth backflow ramp, the backflow hole is located at a low point of the fifth backflow ramp, and the fourth outlet is located at a high point of the fifth backflow ramp;
the bottom wall of the sixth baffle cavity forms a sixth backflow slope, and the fifth outlet is positioned at the low point of the sixth backflow slope;
the bottom wall of the seventh baffle cavity is provided with a seventh backflow bevel, the fourth outlet is positioned at the low point of the seventh backflow bevel, and the fifth outlet is positioned at the high point of the seventh backflow bevel;
the bottom wall of the eighth baffle chamber is provided with an eighth backflow bevel, the sixth outlet is positioned at a low point of the eighth backflow bevel, and the first air hole is positioned at a high point of the eighth backflow bevel.
In one possible implementation manner, the exhaust chamber is further provided with a plurality of baffles between the exhaust hole and the second air hole, and the baffles and the side wall of the exhaust chamber jointly enclose to form a tortuous exhaust channel.
In one possible implementation manner, the first acid return unit further comprises a plurality of balance chambers, the balance chambers are in one-to-one correspondence with the acid return chambers, the upper parts of the balance chambers are communicated with the corresponding acid return chambers, the lower parts of the balance chambers are provided with third air holes communicated with the electrolyte chambers, and the third air holes are used for balancing the internal air pressures of the acid return chambers and the electrolyte chambers.
Compared with the prior art, the storage battery cover provided by the embodiment of the invention has the beneficial effects that:
the storage battery cover provided by the invention comprises a first acid return unit and a second acid return unit which are symmetrically arranged and are respectively used for exhausting and blocking acid on the positive electrode side and the negative electrode side. The first acid return unit comprises a plurality of acid return chambers and an exhaust chamber, wherein the backflow holes are used for gas overflow and electrolyte backflow, the adjacent acid return chambers are communicated through the first gas holes, and the gas of the acid return chambers of the first acid return unit is finally converged into the acid return chamber provided with the second gas holes, enters the exhaust chamber through the second gas holes and is finally exhausted through the exhaust holes.
In the invention, the plurality of acid return chambers are communicated with each other through the first air holes and then are communicated with one exhaust chamber, so that compared with the arrangement of the exhaust chambers corresponding to the acid return chambers respectively, the acid return chambers can prolong the air circulation channels on one hand, and enable electrolyte carried by air to flow back to the reflow holes along the labyrinth flow guide structure after being liquefied. On the other hand, only one exhaust chamber is needed, so that the occupied space of the exhaust chamber is simplified, and the sizes and positions of the acid return chamber and the exhaust chamber can be reasonably arranged in the space only of the battery cover.
According to the invention, the labyrinth flow guide structure is arranged between the backflow hole and the first air hole, so that on one hand, acid liquid can be prevented from flowing to the first air hole, and electrolyte cannot overflow during jolt or inclination. On the other hand can prolong the gas circulation passageway, help the electrolyte liquefaction back to the backward flow hole along maze water conservancy diversion structure that gas carried, solved the vehicle and probably overflowed the problem from the exhaust hole at the electrolyte of battery when jolting or the road surface of slope is driven, improved the safety in utilization of battery.
In a second aspect, the invention also provides a battery comprising a housing having an electrolyte receiving cavity and a battery cover as in any of the above implementations, the battery cover covering an opening of the electrolyte receiving cavity.
The storage battery provided by the invention comprises the storage battery cover in any implementation mode, has the same technical effects as the storage battery cover, and is not repeated here.
Drawings
Fig. 1 is a schematic structural view of a battery cover according to one embodiment of the present invention;
FIG. 2 is a schematic view of a main cover according to one embodiment of the present invention;
FIG. 3 is a schematic view showing a partial structure of a main cover according to one embodiment of the present invention;
FIG. 4 is a schematic diagram showing a partial structure of a main cover according to one embodiment of the present invention;
FIG. 5 is a schematic view of an exhaust cover according to one embodiment of the present invention;
FIG. 6 is a schematic view of an alternative view of the vent cover according to one embodiment of the invention;
FIG. 7 is a partial cross-sectional view of the location of a second vent in one embodiment of the invention.
Reference numerals illustrate:
1. a battery cover; 2. a main cover body; 3. an exhaust cover;
10. acid return chamber; 11. a first air hole; 12. a first acid blocking wall; 121. a first outlet; 122. a first compartment; 13. a second acid blocking wall; 131. a second outlet; 132. a second compartment; 14. a third acid blocking wall; 141. a third outlet; 142. a third compartment; 143. a fourth compartment; 15. a fourth acid blocking wall; 151. a fourth outlet; 152. a fifth compartment; 16. a fifth acid blocking wall; 161. a fifth outlet; 162. a sixth compartment; 17. a sixth acid blocking wall; 171. a sixth outlet; 172. a seventh compartment; 173. an eighth compartment; 18. a reflow hole;
20. an exhaust chamber; 21. a second air hole; 22. an exhaust hole; 23. a baffle; 24. a protruding portion;
30. a balancing chamber; 31. and a third air hole.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed," "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to," "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on," "disposed on" another element, it can be directly on the other element or intervening elements may also be present. "plurality" refers to two and more numbers. "at least one" refers to one and more quantities. "number" refers to one or more numbers.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Referring to fig. 1 to 7, a battery cover 1 and a battery according to an embodiment of the invention are described below.
In fig. 2, the arrow indicates the direction of the low point of each return slope. In fig. 4, the broken line indicates a gas exhaust path, and the arrow indicates an exhaust direction. The gases of the first acid return chamber 10, the second acid return chamber 10 and the third acid return chamber 10 pass through the second air holes 21 and are discharged from the air discharge holes 22 of the air discharge chamber 20.
Referring to fig. 1 to 7, in a first aspect, an embodiment of the present invention provides a battery cover 1, where the battery cover 1 is disposed on top of a battery, the battery cover 1 includes a first acid recovery unit and a second acid recovery unit, the first acid recovery unit is disposed on a positive side, the second acid recovery unit is disposed on a negative side, and the first acid recovery unit and the second acid recovery unit are symmetrical about a center line of the battery; the first acid return unit comprises acid return chambers 10 and exhaust chambers 20, the acid return chambers 10 are arranged in a first horizontal direction, the first horizontal direction is perpendicular to the central line of the storage battery, the bottom wall of each acid return chamber 10 is provided with a reflow hole 18, the reflow holes 18 are used for being communicated with electrolyte cavities of the storage battery, a first air hole 11 is formed between two adjacent acid return chambers 10, the first air hole 11 is positioned at one side of the acid return chamber 10 away from the reflow holes 18, and a labyrinth flow guide structure is further arranged between the reflow holes 18 and the first air holes 11; the exhaust chamber 20 is arranged at one side of the acid return chamber 10, the exhaust chamber 20 and the acid return chamber 10 are arranged along the central line direction of the storage battery, and are provided with a second air hole 21 communicated with one of the acid return chambers 10, and the exhaust chamber 20 is provided with an air exhaust hole 22.
Compared with the prior art, the storage battery cover 1 provided by the embodiment of the invention has the beneficial effects that:
the storage battery cover 1 provided by the embodiment of the invention comprises a first acid return unit and a second acid return unit which are symmetrically arranged and are respectively used for exhausting and blocking acid on the positive electrode side and the negative electrode side. The first acid return unit comprises a plurality of acid return chambers 10 and an exhaust chamber 20, wherein the reflow holes 18 are used for gas overflow and electrolyte reflow, the adjacent acid return chambers 10 are communicated through the first gas holes 11, and the gas of the plurality of acid return chambers 10 of the first acid return unit finally gathers into the acid return chamber 10 provided with the second gas holes 21, enters the exhaust chamber 20 through the second gas holes 21 and is finally exhausted through the exhaust holes 22.
In the embodiment of the invention, the plurality of acid return chambers 10 are communicated with each other through the first air holes 11 and then are communicated with one exhaust chamber 20, so that compared with the arrangement of the exhaust chambers 20 corresponding to each acid return chamber 10, the arrangement can prolong the air circulation channel on one hand, and enable electrolyte carried by air to flow back to the return holes 18 along the labyrinth flow guide structure after being liquefied. On the other hand, only one exhaust chamber 20 is needed, so that the occupied space of the exhaust chamber 20 is simplified, and the size and the position of the acid return chamber 10 and the exhaust chamber 20 can be reasonably arranged in the space only of the battery cover.
According to the embodiment of the invention, the labyrinth flow guide structure is arranged between the backflow hole 18 and the first air hole 11, so that on one hand, acid liquid can be prevented from flowing to the first air hole 11, and electrolyte cannot overflow during jolt or inclination. On the other hand, the gas circulation channel can be prolonged, the electrolyte carried by gas can flow back to the backflow hole 18 along the labyrinth flow guiding structure after being liquefied, the problem that the electrolyte of the storage battery can overflow from the exhaust hole 22 when a vehicle runs on a bumpy or inclined road surface is solved, and the use safety of the storage battery is improved.
The battery cover 1 provided in the embodiment of the present invention is suitable for a lead-acid battery, and has a first acid return unit and a second acid return unit, and the embodiment of the present invention describes the structure of the first acid return unit, and since the first acid return unit and the second acid return unit are symmetrically arranged about a symmetrical center line shown in fig. 2, according to the structure of the first acid return unit, a person skilled in the art can understand the structure of the second acid return unit, and the relative positional relationship between the first acid return unit and the second acid return unit, which will not be repeated herein.
The first acid recovery unit includes a plurality of acid recovery chambers 10 (e.g., two, three, five, etc.) arranged in a first horizontal direction shown in fig. 2, and the first acid recovery unit shown in fig. 2 includes three acid recovery chambers 10. The acid return chamber 10 is a chamber capable of containing gas and liquid, a return hole 18 communicated with the electrolyte cavity is formed in the bottom of the acid return chamber 10, and the return hole 18 is used for exhausting gas and returning electrolyte.
The acid return chamber 10 is internally provided with a labyrinth flow guide structure which forms a labyrinth channel for preventing electrolyte from flowing out and preventing the electrolyte flowing out from the return hole 18 from flowing to the exhaust chamber 20 due to jolt and inclination of a vehicle. On the other hand, serves to lengthen the flow path of the gas so that a part of the moisture carried in the gas can be liquefied into a liquid state and re-circulated to the electrolyte chamber along the labyrinth passage and the return hole 18.
The specific path of the labyrinth flow guiding structure is not limited, and liquid and gas can be blocked. To facilitate electrolyte return, the bottom of the labyrinth passage may be designed to be inclined, and the return hole 18 is located at the lowest position of the labyrinth passage, so that electrolyte remaining in the labyrinth passage can be prevented.
The exhaust chamber 20 is used for exhausting gas, and a structure such as a filter may be provided in the exhaust chamber 20, and the exhaust hole 22 of the exhaust chamber 20 communicates with the outside. The exhaust chamber 20 is communicated with one acid return chamber 10 through the second air hole 21, and the gas of the acid return chambers 10 is collected and enters the exhaust chamber 20 through the second air hole 21, and one exhaust chamber 20 corresponds to the acid return chambers 10, so that the number of the exhaust chambers 20 is reduced, the structure of the storage battery cover is simplified, and the positions of the acid return chambers 10 and the exhaust chambers 20 are reasonably arranged.
The exhaust chambers 20 and the corresponding acid return chambers 10 are arranged along the direction of the symmetrical central line of the storage battery shown in fig. 2, and the exhaust chambers 20 can be positioned at the middle position or the edge position of the storage battery cover 1. Preferably, as shown in fig. 2, the vent chamber 20 is disposed at the middle position of the battery shown in fig. 2, so that when the far terminal side of the battery is slightly inclined (simulating the running of the automobile on a half slope), the vent hole 22 is located at a relatively high point on the middle line, and the electrolyte is not easily overflowed during the running of the automobile on a half slope.
The storage battery cover 1 provided by the embodiment of the invention can be integrally formed by adopting processes such as 3D printing, molding and the like, and can also be formed by combining a plurality of parts. The parts can be fixed into a whole by means of screw connection, adhesion, hot melting and the like, and the embodiment of the invention is not limited to this.
Referring to fig. 1, 2, 5 and 6, in some possible embodiments, the battery cover 1 includes a main cover body 2 and an exhaust cover 3, the exhaust cover 3 is covered on the main cover body 2, the main cover body 2 and the exhaust cover 3 enclose together to form a first acid return unit and a second acid return unit, the main cover body 2 is provided with a reflow hole 18, and the exhaust cover 3 is provided with an exhaust hole 22.
In this embodiment, the main cover body 2 is installed at the opening of the electrolyte cavity of the storage battery, and is used for sealing the electrolyte cavity, and the exhaust cover 3 is covered on the main cover body 2 and can be connected into a whole by means of hot melting, gluing and the like. The main cover body 2 and the exhaust cover 3 are enclosed together to form an acid return chamber 10 and an exhaust chamber 20. The main cover 2 may specifically be configured as shown in fig. 2, and the exhaust cover 3 may specifically be configured as shown in fig. 5 and 6.
Since the electrolyte is an acidic liquid, the main lid 2 and the vent cover 3 should be made of a conventional material that is resistant to acid and corrosion.
Referring to fig. 2 to 4, in some possible embodiments, the first acid return unit has three acid return chambers 10, defining three acid return chambers 10 as a first acid return chamber 10, a second acid return chamber 10 and a third acid return chamber 10 in sequence along the first horizontal direction, and labyrinth flow guiding structures defining the first acid return chamber 10, the second acid return chamber 10 and the third acid return chamber 10 as a first labyrinth flow guiding structure, a second labyrinth flow guiding structure and a third labyrinth flow guiding structure in sequence, and the exhaust chamber 20 is communicated with the second acid return chamber 10 through the second air hole 21.
In this embodiment, the second air hole 21 is disposed in the second acid return chamber 10, and the electrolyte in the first acid return chamber 10 and the second acid return chamber 10 only fills the labyrinth flow guiding structure and then enters the second acid return chamber 10, and then enters the exhaust chamber 20 through the second acid return chamber 10 and the second air hole 21, so that the electrolyte is more difficult to flow out when tilting or bumping, and thus the arrangement can prevent the electrolyte from overflowing through the exhaust hole 22 to the maximum extent, and the use is safe and reliable.
Referring to fig. 2, 3 and 4, in some possible embodiments, the first labyrinth flow guiding structure includes a first acid blocking wall 12, a second acid blocking wall 13 and a third acid blocking wall 14. One end of the first acid blocking wall 12 is connected with one side wall of the first acid return chamber 10, the other end extends towards the direction of the exhaust chamber 20 and is spaced from the side wall of the first acid return chamber 10 adjacent to the exhaust chamber 20 to form a first outlet 121, the first acid blocking wall 12 and the side wall of the first acid return chamber 10 are jointly enclosed to form a first blocking chamber 122, and the backflow hole 18 is arranged at the bottom wall of the first blocking chamber 122; the second acid blocking wall 13 is opposite to the first acid blocking wall 12, one end of the second acid blocking wall 13 is connected with the other side wall of the first acid return chamber 10, the other end of the second acid blocking wall extends towards the exhaust chamber 20 and is spaced from the first acid blocking wall 12 to form a second outlet 131, and the second acid blocking wall 13 and the side wall of the first acid return chamber 10 jointly enclose to form a second blocking chamber 132; one end of the third acid blocking wall 14 is connected with one side wall of the first acid return chamber 10, the other end extends towards the direction of the exhaust chamber 20 and is spaced from the other side wall of the first acid return chamber 10 to form a third outlet 141, the first acid blocking wall 12, the second acid blocking wall 13, the third acid blocking wall 14 and the side wall of the first acid return chamber 10 jointly enclose to form a third blocking cavity 142, and the third acid blocking wall 14 and the side wall of the first acid return chamber 10 jointly enclose to form a fourth blocking cavity 143. The first outlet 121 is communicated with the first blocking cavity 122 and the second blocking cavity 132, the second outlet 131 is communicated with the second blocking cavity 132 and the third blocking cavity 142, the third outlet 141 is communicated with the third blocking cavity 142 and the fourth blocking cavity 143, and the first air hole 11 communicated with the first acid return room 10 and the second acid return room 10 is formed in the side wall of the fourth blocking cavity 143 far away from the third outlet 141.
As shown in fig. 3, in this embodiment, the first acid blocking wall 12 and the second acid blocking wall 13 are respectively disposed on two opposite side walls of the first acid return chamber 10, and the first acid blocking wall 12 and the second acid blocking wall 13 respectively extend along an arc in a direction adjacent to the exhaust chamber 20, so that on one hand, the electrolyte is not easy to flow into the labyrinth flow guiding structure (reverse flow forms a barrier), and on the other hand, the electrolyte in the labyrinth flow guiding structure is easy to flow back into the single cell (forward flow is similar to a funnel).
The third acid blocking wall 14 is disposed on the same side of the first acid blocking wall 12, and the third acid blocking wall 14 is used for blocking the electrolyte again, so as to prevent the electrolyte from directly flowing to the first air hole 11. When the space of the third blocking chamber 142 is larger, a seventh acid blocking wall may be further disposed in the third blocking chamber 142, so as to form a secondary barrier for the electrolyte flowing out from the second outlet 131, thereby avoiding the electrolyte from flowing out to the greatest extent.
Referring to fig. 2 and 3, the arrows indicate the direction of inclination of the return ramp, and in some possible embodiments, the bottom wall of the first compartment 122 forms a first return ramp, with the return aperture 18 being at a low point of the first return ramp; the bottom wall of the second blocking chamber 132 forms a second backflow ramp, and the first outlet 121 is positioned at a low point of the second backflow ramp; the bottom wall of the third blocking chamber 142 forms a third backflow ramp, and the second outlet 131 is positioned at a low point of the third backflow ramp; the bottom wall of the fourth blocking chamber 143 forms a fourth backflow ramp, the third outlet 141 is located at a low point of the fourth backflow ramp, and the first air hole 11 is located at a high point of the fourth backflow ramp.
The first air hole 11 may be provided in the main cover 2, may be provided in the exhaust cover 3, or may be formed by joining the main cover 2 and the exhaust cover 3.
In this embodiment, the bottom surface of the first acid return chamber 10 has a backflow slope, and when the storage battery is placed, the electrolyte can be quickly returned to the storage battery through the slope of the backflow slope and the backflow hole 18 at the lowest point, so that the electrolyte is prevented from being accumulated in the labyrinth guide structure.
It should be noted that the third acid return chamber 10 and the third labyrinth flow guiding structure may be identical or symmetrical to the structures of the first acid return chamber 10 and the first labyrinth flow guiding structure, and those skilled in the art can understand the specific structures of the third acid return chamber 10 and the third labyrinth flow guiding structure according to the first acid return chamber 10 and the first labyrinth flow guiding structure, and the third acid return chamber 10 and the third labyrinth flow guiding structure will not be described again.
Referring to fig. 3 and 4, in some possible embodiments, the second labyrinth flow guiding structure includes a fourth acid blocking wall 15, a fifth acid blocking wall 16, and a sixth acid blocking wall 17. One end of the fourth acid blocking wall 15 is connected with the side wall of the second acid return chamber 10 adjacent to the exhaust chamber 20, the other end extends in a direction away from the exhaust chamber 20 and is spaced from one side wall of the second acid return chamber 10 to form a fourth outlet 151, the fourth acid blocking wall 15 and the side wall of the second acid return chamber 10 are jointly enclosed to form a fifth blocking chamber 152, and the backflow hole 18 is arranged at the bottom wall of the fifth blocking chamber 152; one end of the fifth acid blocking wall 16 is connected with the fourth acid blocking wall 15, the other end extends towards the direction far away from the exhaust chamber 20 and is spaced from the other side wall of the second acid return chamber 10 to form a fifth outlet 161, the fifth acid blocking wall 16 and the fourth acid blocking wall 15 jointly form a Y-shaped structure, the side walls of the fifth acid blocking wall 16, the fourth acid blocking wall 15 and the second acid return chamber 10 jointly enclose to form a sixth blocking chamber 162, and the side wall of the sixth blocking chamber 162 adjacent to the exhaust chamber 20 is provided with a second air hole 21; the two sixth acid blocking walls 17 are oppositely arranged, one end of each sixth acid blocking wall 17 is connected with one side wall of the second acid return chamber 10, the other end of each sixth acid blocking wall 17 is close to the exhaust chamber 20 and is spaced to form a sixth outlet 171, the two sixth acid blocking walls 17, the side wall of the second acid return chamber 10, the fourth acid blocking wall 15 and the fifth acid blocking wall 16 jointly enclose to form a seventh separation chamber 172, and the two sixth acid blocking walls 17 and the side wall of the second acid return chamber 10 jointly enclose to form an eighth separation chamber 173; the fourth outlet 151 is communicated with the fifth blocking cavity 152 and the seventh blocking cavity 172, the fifth outlet 161 is communicated with the sixth blocking cavity 162 and the seventh blocking cavity 172, the sixth outlet 171 is communicated with the seventh blocking cavity 172 and the eighth blocking cavity 173, and the side wall of the eighth blocking cavity 173 is provided with the first air hole 11.
As shown in fig. 2, in the embodiment of the present invention, the fourth acid blocking wall 15 and the fifth acid blocking wall 16 form a Y-shaped structure, which can prevent the electrolyte from flowing into the sixth blocking chamber 162 and then flowing into the exhaust chamber 20 through the second air hole 21, and also helps the electrolyte of the second labyrinth guiding structure to flow back to the fifth blocking chamber 152. The two sixth acid blocking walls 17 are respectively arranged on two opposite side walls of the second acid return chamber 10 and extend towards the exhaust chamber 20, so that electrolyte in the second labyrinth flow guiding structure can flow into the fifth blocking chamber 152 and then flow into the electrolyte chamber through the backflow hole 18.
Referring to fig. 3 and 4, in some possible embodiments, the bottom wall of the fifth barrier 152 forms a fifth backflow ramp, the backflow hole 18 is located at a low point of the fifth backflow ramp, and the fourth outlet 151 is located at a high point of the fifth backflow ramp; the bottom wall of the sixth blocking chamber 162 forms a sixth backflow ramp, and the fifth outlet 161 is located at a low point of the sixth backflow ramp; the bottom wall of the seventh blocking chamber 172 has a seventh backflow ramp, the fourth outlet 151 is located at a low point of the seventh backflow ramp, and the fifth outlet 161 is located at a high point of the seventh backflow ramp; the bottom wall of the eighth blocking chamber 173 has an eighth backflow ramp, the sixth outlet 171 is located at a low point of the eighth backflow ramp, and the first air holes 11 are located at a high point of the eighth backflow ramp.
In this embodiment, the bottom surface of the second acid return chamber 10 has a backflow slope, and when the storage battery is placed, the electrolyte can be quickly returned to the storage battery through the slope of the backflow slope and the backflow hole 18 at the lowest point, so that the electrolyte is prevented from being accumulated in the labyrinth guide structure.
Referring to fig. 2, 5 and 6, in some possible embodiments, the exhaust chamber 20 is further provided with a plurality of baffles 23 between the exhaust hole 22 and the second air hole 21, and the baffles 23 and the side wall of the exhaust chamber 20 form a tortuous exhaust passage.
By providing the baffles 23, the exhaust channel forms a tortuous path, which on the one hand enables electrolyte to flow out and on the other hand also assists in liquefying the moisture in the gas to a liquid state. The baffle plates 23 may be provided in one or more, and when there are a plurality, the plurality of baffle plates 23 are staggered in the exhaust direction.
As shown in fig. 7, in order to further block the electrolyte from entering the exhaust chamber 20 and improve the safety of the battery, in some possible embodiments, the side wall of the second air hole 21 has a plurality of protrusions 24, and the protrusions 24 form a tortuous gas channel for the second air hole 21, so as to block the electrolyte from entering the exhaust chamber 20.
As shown in fig. 7, when the projection 24 has one, the gas passage of the second gas hole 21 is like a "mountain" shape. When the plurality of the protrusions 24 are provided, the plurality of the protrusions 24 are staggered in the exhaust direction to form a meandering gas channel, which can effectively prevent the exhaust chamber 20 from entering the electrolyte.
Referring to fig. 2, in some possible embodiments, the first acid recycling unit further includes a plurality of balancing chambers 30, the balancing chambers 30 are in one-to-one correspondence with the acid recycling chambers 10, the upper portions of the balancing chambers 30 are communicated with the corresponding acid recycling chambers 10, the lower portions of the balancing chambers 30 are provided with third air holes 31 communicated with the electrolyte chamber, and the third air holes 31 are used for balancing the internal air pressures of the acid recycling chambers 10 and the electrolyte chamber.
In this embodiment, the third air hole 31 is used for balancing the internal air pressures of the acid return chamber 10 and the electrolyte chamber of the storage battery, the balancing chamber 30 may be disposed in the area between the acid return chamber 10 and the exhaust chamber 20, and each acid return chamber 10 is correspondingly provided with the balancing chamber 30 and the third air hole 31, so as to ensure that the air pressure of each acid return chamber 10 is consistent with the electrolyte chamber.
In a second aspect, an embodiment of the present invention further provides a battery, including a case having an electrolyte-containing chamber, and the battery cover 1 in any of the above embodiments, the battery cover 1 covering an opening provided in the electrolyte-containing chamber.
The storage battery provided in the embodiment of the present invention includes the storage battery cover 1 in any of the above embodiments, which has the same technical effects as those of the storage battery cover, and is not described herein again.
It will be appreciated that the portions of the foregoing embodiments may be freely combined or omitted to form different combined embodiments, and the details of the respective combined embodiments are not described herein, so that after the description, the present disclosure may be considered as having described the respective combined embodiments, and the different combined embodiments can be supported.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1. The storage battery cover is arranged at the top of the storage battery and is characterized by comprising a first acid return unit and a second acid return unit, wherein the first acid return unit is arranged at the positive electrode side, the second acid return unit is arranged at the negative electrode side, and the first acid return unit and the second acid return unit are symmetrical about the central line of the storage battery;
the first acid recovery unit comprises:
the acid return chambers are arranged along a first horizontal direction, the first horizontal direction is perpendicular to the central line of the storage battery, the bottom wall of each acid return chamber is provided with a reflux hole which is used for being communicated with an electrolyte cavity of the storage battery, a first air hole is formed between two adjacent acid return chambers, the first air hole is positioned at one side of the acid return chamber away from the reflux hole, and a labyrinth flow guide structure is further arranged between the reflux hole and the first air hole; and
the exhaust chamber is arranged at one side of the acid return chamber, the exhaust chamber and the acid return chamber are arranged along the central line direction of the storage battery and are provided with second air holes communicated with one of the acid return chambers, and the exhaust chamber is provided with an exhaust hole.
2. The battery cover of claim 1, wherein the battery cover comprises a main cover body and an exhaust cover, the exhaust cover is arranged on the main cover body, the main cover body and the exhaust cover are enclosed together to form the first acid return unit and the second acid return unit, the main cover body is provided with the backflow hole, and the exhaust cover is provided with the exhaust hole.
3. The battery cover according to claim 1, wherein the first acid return unit has three acid return chambers, defining three of the acid return chambers as a first acid return chamber, a second acid return chamber, and a third acid return chamber in order along a first horizontal direction, and the labyrinth flow guide structures defining the first acid return chamber, the second acid return chamber, and the third acid return chamber are a first labyrinth flow guide structure, a second labyrinth flow guide structure, and a third labyrinth flow guide structure in order, and the exhaust chamber communicates with the second acid return chamber through the second air hole.
4. The battery cover of claim 3, wherein the first labyrinth flow guiding structure comprises:
one end of the first acid blocking wall is connected with one side wall of the first acid return chamber, the other end of the first acid blocking wall extends towards the direction of the exhaust chamber and is spaced from the side wall of the first acid return chamber adjacent to the exhaust chamber to form a first outlet, the first acid blocking wall and the side wall of the first acid return chamber jointly enclose to form a first blocking chamber, and the backflow hole is formed in the bottom wall of the first blocking chamber;
the second acid blocking wall is arranged opposite to the first acid blocking wall, one end of the second acid blocking wall is connected with the other side wall of the first acid return chamber, the other end of the second acid blocking wall extends towards the direction of the exhaust chamber and is spaced from the first acid blocking wall to form a second outlet, and the second acid blocking wall and the side wall of the first acid return chamber are enclosed together to form a second blocking chamber; and
one end of the third acid blocking wall is connected with one side wall of the first acid return chamber, the other end of the third acid blocking wall extends towards the direction of the exhaust chamber and is spaced from the other side wall of the first acid return chamber to form a third outlet, the first acid blocking wall, the second acid blocking wall, the third acid blocking wall and the side wall of the first acid return chamber are enclosed together to form a third blocking cavity, and the third acid blocking wall and the side wall of the first acid return chamber are enclosed together to form a fourth blocking cavity;
the first outlet is communicated with the first blocking cavity and the second blocking cavity, the second outlet is communicated with the second blocking cavity and the third blocking cavity, the third outlet is communicated with the third blocking cavity and the fourth blocking cavity, and the first air hole which is communicated with the first acid return cavity and the second acid return cavity is formed in the side wall of the fourth blocking cavity, which is far away from the third outlet.
5. The battery cover of claim 4, wherein the bottom wall of the first compartment forms a first backflow ramp, the backflow orifice being at a low point of the first backflow ramp;
the bottom wall of the second blocking cavity forms a second backflow inclined surface, and the first outlet is positioned at the low point of the second backflow inclined surface;
the bottom wall of the third blocking cavity forms a third backflow inclined surface, and the second outlet is positioned at the low point of the third backflow inclined surface;
the bottom wall of the fourth blocking cavity forms a fourth backflow inclined plane, the third outlet is positioned at the low position of the fourth backflow inclined plane, and the first air hole is positioned at the high position of the fourth backflow inclined plane.
6. The battery cover of claim 4, wherein the second labyrinth flow guiding structure comprises:
one end of the fourth acid blocking wall is connected with the side wall of the second acid return chamber adjacent to the exhaust chamber, the other end of the fourth acid blocking wall extends in a direction away from the exhaust chamber and is spaced from one side wall of the second acid return chamber to form a fourth outlet, the fourth acid blocking wall and the side wall of the second acid return chamber are jointly enclosed to form a fifth blocking chamber, and the backflow hole is formed in the bottom wall of the fifth blocking chamber;
one end of the fifth acid blocking wall is connected with the fourth acid blocking wall, the other end of the fifth acid blocking wall extends in a direction far away from the exhaust chamber and is spaced from the other side wall of the second acid return chamber to form a fifth outlet, the fifth acid blocking wall and the fourth acid blocking wall jointly form a Y-shaped structure, the side walls of the fifth acid blocking wall, the fourth acid blocking wall and the second acid return chamber jointly enclose to form a sixth blocking chamber, and the side wall of the sixth blocking chamber adjacent to the exhaust chamber is provided with the second air hole; and
two sixth acid blocking walls are oppositely arranged, one end of each sixth acid blocking wall is connected with one side wall of the second acid return chamber, the other end of each sixth acid blocking wall is close to the exhaust chamber and is spaced to form a sixth outlet, the two sixth acid blocking walls, the side wall of the second acid return chamber, the fourth acid blocking wall and the fifth acid blocking wall jointly enclose to form a seventh separation chamber, and the two sixth acid blocking walls and the side wall of the second acid return chamber jointly enclose to form an eighth separation chamber;
the fourth outlet is communicated with the fifth blocking cavity and the seventh blocking cavity, the fifth outlet is communicated with the sixth blocking cavity and the seventh blocking cavity, the sixth outlet is communicated with the seventh blocking cavity and the eighth blocking cavity, and the side wall of the eighth blocking cavity is provided with the first air hole.
7. The battery cover of claim 6, wherein the bottom wall of the fifth compartment forms a fifth backflow ramp, the backflow orifice is located at a low point of the fifth backflow ramp, and the fourth outlet is located at a high point of the fifth backflow ramp;
the bottom wall of the sixth baffle cavity forms a sixth backflow slope, and the fifth outlet is positioned at the low point of the sixth backflow slope;
the bottom wall of the seventh baffle cavity is provided with a seventh backflow bevel, the fourth outlet is positioned at the low point of the seventh backflow bevel, and the fifth outlet is positioned at the high point of the seventh backflow bevel;
the bottom wall of the eighth baffle chamber is provided with an eighth backflow bevel, the sixth outlet is positioned at a low point of the eighth backflow bevel, and the first air hole is positioned at a high point of the eighth backflow bevel.
8. The battery cover of claim 1, wherein the vent chamber is further provided with a plurality of baffles between the vent hole and the second vent hole, the baffles and the side wall of the vent chamber collectively enclosing to form a tortuous vent path.
9. The battery cover according to claim 1, wherein the first acid return unit further comprises a plurality of balance chambers, the balance chambers are in one-to-one correspondence with the acid return chambers, the upper parts of the balance chambers are communicated with the corresponding acid return chambers, the lower parts of the balance chambers are provided with third air holes communicated with the electrolyte chamber, and the third air holes are used for balancing the internal air pressures of the acid return chambers and the electrolyte chamber.
10. A battery, characterized by comprising:
a housing having an electrolyte receiving cavity; and
the battery cover according to any one of claims 1 to 9, which is provided at an opening of the electrolyte-containing chamber.
CN202310851665.2A 2023-07-12 2023-07-12 Storage battery cover and storage battery Pending CN116845442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310851665.2A CN116845442A (en) 2023-07-12 2023-07-12 Storage battery cover and storage battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310851665.2A CN116845442A (en) 2023-07-12 2023-07-12 Storage battery cover and storage battery

Publications (1)

Publication Number Publication Date
CN116845442A true CN116845442A (en) 2023-10-03

Family

ID=88174131

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310851665.2A Pending CN116845442A (en) 2023-07-12 2023-07-12 Storage battery cover and storage battery

Country Status (1)

Country Link
CN (1) CN116845442A (en)

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