Electrolyte circulation structure and storage battery
By introducing an electrolyte circulation structure of the injection channel and the flow-blocking orifice plate into the battery, the lower electrolyte is driven to circulate to the upper part by inertia, solving the problem of electrolyte layering and improving the service life of the battery.
Patent Information
- Application Number
- CN202421942531.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-12
AI Technical Summary
In the prior art, liquid-rich batteries such as automobiles and aircraft are delaminated due to gravity during use, which affects the service life.
The electrolyte circulation structure is adopted, including an injection channel and a flow-blocking orifice plate. The electrolyte with a high specific gravity at the lower part is sprayed through the injection channel to form a cycle to solve the problem of electrolyte layering.
The electrolyte circulation is driven by inertia, so that the electrolyte density is achieved, significantly improving the service life of the battery.
Smart Images
Figure CN223167632U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of storage batteries, and more specifically, relates to an electrolyte circulation structure and a storage battery. Background Art
[0002] At present, for flooded batteries used in automobiles, airplanes, etc., during static and use processes, due to the action of gravity, sulfuric acid with a high specific gravity has a downward movement tendency, while water with a low specific gravity remains in the upper part. As the use time prolongs, this phenomenon of sulfuric acid moving downward becomes more obvious, that is, the electrolyte of the storage battery is stratified, seriously affecting the service life of the storage battery. To alleviate this problem, many manufacturers adopt various methods, for example: adding an AGM fiberglass separator on the PVC separator, adding powdered SiO2 in the electrolyte, etc. It is very difficult to completely adsorb sulfate ions in the solution by the above methods. Because dilute sulfuric acid is completely ionized into hydrogen ions and sulfate ions in water, and sulfate ions are easily soluble in water, under the action of gravity, sulfate ions will still move downward. The author, in order to solve the problem of stratification of flooded batteries in automobiles, airplanes, etc., the best way is to circulate the electrolyte with a high specific gravity in the lower part to the upper part. Therefore, the author considered that the principle of energy conservation can be adopted, relying on the kinetic energy generated by the self-acceleration of automobiles, airplanes, etc., to make the electrolyte run from bottom to top, so as to solve the problem of electrolyte stratification of the storage battery. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an electrolyte circulation structure and a storage battery, aiming to solve the problem of life attenuation caused by electrolyte stratification of flooded batteries.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide an electrolyte circulation structure, including a storage battery tank and a spray channel. The spray channel is longitudinally arranged on the side wall of the storage battery tank. An inlet liquid buffer area is provided at the lower end port of the spray channel. A flow blocking orifice plate is arranged in the inlet liquid buffer area. One side of the flow blocking orifice plate away from the inner wall of the storage battery tank is arranged at an angle with the horizontal direction. The flow blocking orifice plate is driven by inertia to approach the spray channel and squeeze the electrolyte in the inlet liquid buffer area into the spray channel. The upper end outlet of the spray channel extends above the liquid level of the storage battery tank.
[0005] As another embodiment of this application, a plurality of longitudinal spray pipes are arranged on the side wall of the storage battery tank. Both the upper and lower ends of the spray pipe are in an open state. The inner cavity of the spray pipe forms a spray channel. An inlet liquid buffer area is formed between the lower end of the spray pipe and the bottom of the storage battery tank.
[0006] As another embodiment of the present application, a horizontally extending baffle is connected to the lower end of the injection pipe, and the baffle is parallel to the bottom of the battery cell; the flow baffle plate is longitudinally arranged between the baffle and the bottom of the battery cell, and the flow baffle plate has a degree of freedom in the horizontal direction; the baffle, the bottom of the battery cell, the side wall of the battery cell, and the flow baffle plate enclose the liquid inlet buffer zone.
[0007] As another embodiment of the present application, the injection channel is parallel to the direction of the electrode plates in the electrode group in the battery cell, and a plurality of injection channels are arranged at intervals in the horizontal direction.
[0008] As another embodiment of the present application, only one liquid inlet buffer zone is provided on one side of the battery cell, and the liquid inlet buffer zone extends in the horizontal direction; the liquid inlet buffer zone communicates with a plurality of the injection channels on the same side of the battery cell at the same time.
[0009] As another embodiment of the present application, the height difference between the upper end of the injection channel and the liquid level in the battery cell is ≥ 10 mm.
[0010] As another embodiment of the present application, an edge siphon pipe fitting is further provided in the battery cell; the edge siphon pipe fitting includes a first pipe fitting and a second pipe fitting arranged horizontally at intervals, the upper ends of the first pipe fitting and the second pipe fitting are connected by a transverse connecting pipe fitting, and the lower ends of the first pipe fitting and the second pipe fitting are flush.
[0011] As another embodiment of the present application, the first pipe fitting is attached to the inner side wall of the battery cell, and the lower end of the first pipe fitting communicates with the liquid inlet buffer zone or is located on one side of the liquid inlet buffer zone.
[0012] As another embodiment of the present application, an air extraction port is provided on the transverse connecting pipe fitting, and a one-way exhaust valve or a sealing cover is provided at the air extraction port.
[0013] The beneficial effect of the electrolyte circulation structure provided by the present utility model is as follows: compared with the prior art, in the electrolyte circulation structure of the present utility model, when the battery accelerates forward or decelerates, the electrolyte in the battery cell will move accordingly and generate inertia force, and the inertia force impacts the flow baffle plate. The flow baffle plate moves to squeeze the electrolyte in the liquid inlet buffer zone, so that the electrolyte enters the lower end port of the injection channel and is ejected through the upper end outlet of the injection channel, so that the electrolyte with a high specific gravity at the lower part is continuously sprayed to the upper part of the electrolyte, forming a good circulation, solving the stratification of the electrolyte in the battery, contributing to the uniform density of the electrolyte, and greatly improving the service life of the battery.
[0014] A battery is further provided, which adopts the above-mentioned electrolyte circulation structure.
[0015] The beneficial effects of the storage battery provided by the present utility model are as follows: Compared with the prior art, the storage battery provided by the present utility model has all the beneficial effects of the electrolyte circulation structure; by using the inertia generated by the movement of the electrolyte in the battery tank, the inertia impacts the baffle orifice plate, and the baffle orifice plate moves to squeeze the electrolyte in the liquid inlet buffer area, so that the electrolyte with a high specific gravity at the lower part is continuously sprayed onto the upper part of the electrolyte, forming a good cycle, solving the stratification of the electrolyte in the storage battery, contributing to the uniform density of the electrolyte, and greatly improving the service life of the storage battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 It is a schematic position diagram of the electrolyte circulation structure provided by the first embodiment of the present utility model;
[0018] Figure 2 It is a schematic structural diagram of the electrolyte circulation structure provided by the first embodiment of the present utility model;
[0019] Figure 3 For Figure 2 the enlarged view at A in
[0020] Figure 4 It is a side sectional view of the storage battery provided by the first embodiment of the present utility model;
[0021] Figure 5 It is a schematic structural diagram of the electrolyte circulation structure provided by the second embodiment of the present utility model.
[0022] In the figure: 1. Battery tank; 2. Injection pipe; 3. Liquid inlet buffer area; 4. Baffle orifice plate; 5. Baffle; 6. Through hole; 7. Edge siphon pipe fitting; 8. Air extraction port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0024] Please refer to Figures 1 to 5, the electrolyte circulation structure and battery provided by the present utility model will be described. The electrolyte circulation structure and battery, wherein the electrolyte circulation structure includes a battery cell 1 and a spraying channel. The spraying channel is longitudinally arranged on the side wall of the battery cell 1. There is a liquid inlet buffer area 3 at the lower end port of the spraying channel. A flow blocking orifice plate 4 is arranged in the liquid inlet buffer area 3. One side of the flow blocking orifice plate 4 away from the inner wall of the battery cell 1 is arranged at an angle with the horizontal direction. The flow blocking orifice plate 4 is driven by inertia to approach the spraying channel and squeeze the electrolyte in the liquid inlet buffer area 3 into the spraying channel; the upper end outlet of the spraying channel extends above the liquid level of the battery cell 1.
[0025] The sulfuric acid with a high specific gravity of the electrolyte in the battery moves downward due to gravity. As the parking and usage time prolongs, it causes the density of the upper part of the electrolyte to be low and the density of the lower part to be high, which not only affects the discharge performance of the upper and lower plates of the battery, but even seriously reduces the service life of the battery.
[0026] Compared with the prior art, for the electrolyte circulation structure provided by the present utility model, when the battery accelerates forward or decelerates, the electrolyte in the battery cell 1 will move accordingly and generate inertia. The inertia impacts the flow blocking orifice plate 4, and the flow blocking orifice plate 4 moves to squeeze the electrolyte in the liquid inlet buffer area 3, so that the electrolyte enters the lower end port of the spraying channel and is sprayed out through the upper end outlet of the spraying channel, making the electrolyte with a high specific gravity in the lower part continuously sprayed to the upper part of the electrolyte, forming a good cycle, solving the stratification of the electrolyte in the battery, contributing to the uniform density of the electrolyte, and greatly improving the service life of the battery.
[0027] A pole group is installed in the battery cell 1, and the pole group is immersed in the electrolyte; the spraying channels are located on the inner side walls of the battery cell 1 on both sides of the pole group. The spraying channels are parallel to the direction of the plates in the pole group in the battery cell 1. Because the plates are placed horizontally, it will hinder the flow of the electrolyte, so they are placed in parallel. There are two groups of spraying channels, and the two groups of spraying channels are symmetrically arranged on the two inner side walls of the battery cell 1 respectively, solving the electrolyte circulation caused by inertia in two directions. For example, if the battery has an acceleration to the left or right, the spraying channels are arranged on the left and right side walls of the battery cell 1.
[0028] The spraying channels can be arranged at intervals in the horizontal direction. The multiple spraying channels are arranged at intervals. When the battery has an acceleration, the multiple spraying channels on the same side simultaneously realize the spraying of the electrolyte.
[0029] The multiple spraying channels on the left side wall and the right side wall of the battery cell 1 are completely symmetric.
[0030] Taking one group as an example, the spraying channels in the same group are located on the same side wall of the battery cell 1.
[0031] On the side wall of the battery cell 1, a plurality of longitudinal spray pipes 2 are provided. Both the upper and lower ends of the spray pipe 2 are in an open state. The inner cavity of the spray pipe 2 forms a spray channel, and a liquid inlet buffer zone 3 is formed between the lower end of the spray pipe 2 and the bottom of the battery cell 1.
[0032] The spray pipe 2 is a circular pipe, and the cross-section of the spray channel formed by the spray pipe 2 is circular, which can effectively reduce the structural force of the fluid in the spray pipe 2. And the cross-sectional area of the spray channel is much smaller than the cross-sectional area of the liquid inlet buffer zone 3. To ensure that when operating at an accelerated speed, the lower liquid is under pressure. Due to the smaller cross-sectional area of the spray channel, the electrolyte will be accelerated and then sprayed out from the upper end outlet of the spray pipe 2.
[0033] The lower end of the spray pipe 2 is a liquid inlet, and the liquid inlet of the spray pipe 2 is communicated with the liquid inlet buffer zone 3.
[0034] Specifically, as Figure 2 and Figure 3 shown, a baffle plate 5 extending in the horizontal direction is connected to the lower end of the spray pipe 2. The baffle plate 5 is parallel to the bottom of the battery cell 1; a flow blocking orifice plate 4 is longitudinally arranged between the baffle plate 5 and the bottom of the battery cell 1. The flow blocking orifice plate 4 has a degree of freedom in the horizontal direction; the baffle plate 5, the bottom of the battery cell 1, the side wall of the battery cell 1, and the flow blocking orifice plate 4 enclose the liquid inlet buffer zone 3.
[0035] One or more liquid inlet buffer zones 3 are provided on the left and / or right side walls of the battery cell 1. The same liquid inlet buffer zone 3 can be communicated with one or more spray channels. Due to the existence of left or right acceleration of the battery, spray channels and liquid inlet buffer zones 3 are provided on both the left and right side walls of the battery cell 1.
[0036] When the liquid inlet buffer zone 3 and the spray channel correspond one by one, that is, a baffle plate 5 is provided at the lower end of the spray pipe 2. The baffle plate 5 is an inverted U-shaped plate member. The edge of the baffle plate 5 is connected to the inner side plate of the battery cell 1, and the end face of the open end of the baffle plate 5 is attached to the bottom of the battery cell 1. The flow blocking orifice plate 4 is parallel to the inner side plate of the battery cell 1 and moves horizontally to approach or move away from the inner side plate of the battery cell 1. The baffle plate 5, the inner side wall of the battery cell 1, the bottom of the battery cell 1, and the flow blocking orifice plate 4 enclose a rectangular liquid inlet buffer zone 3. The horizontal movement of the flow blocking orifice plate 4 is used to press the liquid in the liquid inlet buffer zone 3 into the spray channel by using the pressure of the electrolyte and the moving inertia of the flow blocking orifice plate 4.
[0037] The baffle orifice plate 4 has a plurality of through holes 6, and the total flow area of the plurality of through holes 6 is less than or equal to one-tenth of the total area of the end face of the baffle orifice plate 4. When the baffle orifice plate 4 moves to be close to the lower end inlet of the injection channel, it is limited, the baffle orifice plate 4 stops moving, the power of injection ends, and a gap is left between the baffle orifice plate 4 and the inner side wall of the battery tank 1. As the residual liquid in the injection channel drops under the action of gravity, and the electrolyte flows into the liquid inlet buffer area 3 from the through holes 6 of the baffle orifice plate 4, the baffle orifice plate 4 gradually returns to its original position. The volume of the liquid inlet buffer area 3 is larger than the volume of the injection channel.
[0038] In addition, for the convenience of the movement and reset of the baffle orifice plate 4, a horizontal guide rail or guide groove is provided on the lower end face of the baffle plate 5, and the baffle orifice plate 4 is slidably matched with the guide rail or guide groove. A flanging is also provided at the free end of the baffle plate 5, and the flanging is used to prevent the baffle orifice plate 4 from coming out. An elastic member is provided between the inner side wall of the battery tank 1 in the liquid inlet buffer cavity and the baffle orifice plate 4, and the elastic member is in a compressed state. When the baffle orifice plate 4 is limited when it moves to be close to the lower end inlet of the injection channel, the elastic member is extruded, and the elastic member drives the baffle orifice plate 4 to move in the reverse direction until the baffle orifice plate 4 gradually resets.
[0039] When there are a plurality of injection channels corresponding to the liquid inlet buffer area 3, for example, if only one liquid inlet buffer area 3 is provided on one side of the battery tank 1, the liquid inlet buffer area 3 extends in the horizontal direction; the liquid inlet buffer area 3 communicates with a plurality of injection channels on the same side of the battery tank 1 at the same time.
[0040] The baffle plate 5 extends horizontally to cover the lower end ports of a plurality of injection channels. Both ends of the baffle plate 5 extend to the front and rear side walls of the battery tank 1 or are arranged at intervals from the front and rear side walls of the battery tank 1. One baffle plate 5 is provided with one baffle orifice plate 4, and the baffle orifice plate 4 completely covers the port of the baffle plate 5.
[0041] In some possible embodiments, please refer to Figure 4 , the height difference between the upper end of the injection channel and the liquid level in the battery tank 1 ≥ 10 mm, so as to prevent the electrolyte in the battery tank 1 from covering the upper end outlet of the injection channel.
[0042] In some possible embodiments, please refer to Figure 5 , an edge siphon pipe fitting 7 is further provided in the battery tank 1; the edge siphon pipe fitting 7 includes a first pipe fitting and a second pipe fitting which are horizontally arranged at intervals, the upper ends of the first pipe fitting and the second pipe fitting are communicated by means of a transverse connecting pipe fitting, and the lower ends of the first pipe fitting and the second pipe fitting are flush. The edge siphon pipe fitting 7 is filled with electrolyte.
[0043] The edge siphon pipe fitting 7 is located near the front and rear side walls of the battery case 1, avoiding the electrode group. The first pipe fitting and the second pipe fitting are connected by a transverse connecting pipe fitting to form an inverted U-shaped pipe fitting. The first pipe fitting is located on the side of the second pipe fitting close to the side wall of the battery case 1, and the second pipe fitting is located in the middle of the battery case 1. The lower ends of the first pipe fitting and the second pipe fitting are flush to form a siphon pipe.
[0044] Specifically, the first pipe fitting is attached to the inner side wall of the battery case 1, and the lower end of the first pipe fitting communicates with the liquid inlet buffer area 3 or is located on one side of the liquid inlet buffer area 3. Taking the example that the lower end of the first pipe fitting is located on one side of the liquid inlet buffer area 3, when the battery has an acceleration, the electrolyte will accumulate on one side in the battery case 1, and there is a pressure difference between the lower end surfaces of the first pipe fitting and the second pipe fitting of the edge siphon pipe fitting 7. Under the action of the pressure difference, liquid flow will be instantaneously generated in the edge siphon pipe fitting 7. During the flowing process, the liquid level at the first pipe fitting rises, and the liquid level at the second pipe fitting drops below the port. The liquid level at the lower end of the second pipe fitting is exposed. Taking the example that the lower end of the first pipe fitting communicates with the liquid inlet buffer area 3, when the battery has an acceleration, the electrolyte and the baffle plate 4 both move towards one side of the battery case 1. As the baffle plate 4 moves, the baffle plate 4 pushes the electrolyte in the liquid inlet buffer area 3 into the first pipe fitting, and the electrolyte in the edge siphon pipe fitting 7 is discharged from the lower end of the second pipe fitting to complete the cycle.
[0045] Optionally, the lower end surface of the edge siphon pipe fitting 7 is located 5 mm - 10 mm below the liquid level of the electrolyte. The extension length of the transverse connecting pipe fitting is not less than one-fourth of the length of the battery case 1.
[0046] An air extraction port 8 is provided on the transverse connecting pipe fitting. The air extraction port 8 is provided with a one-way exhaust valve or a sealing cover. The air extraction port 8 protrudes from the upper end surface of the transverse connecting pipe fitting. The one-way exhaust valve or the sealing cover is used to extract the air in the inner cavity of the edge siphon pipe fitting 7 and seal the edge siphon pipe fitting 7.
[0047] A battery is also provided, which adopts the above-mentioned electrolyte circulation structure.
[0048] Compared with the prior art, the battery provided by the present utility model has all the beneficial effects of the electrolyte circulation structure; by using the inertia generated by the movement of the electrolyte in the battery case 1, the baffle plate 4 is impacted by the inertia, and the baffle plate 4 moves to squeeze the electrolyte in the liquid inlet buffer area 3, so that the electrolyte with a higher specific gravity at the lower part is continuously sprayed to the upper part of the electrolyte, forming a good cycle, solving the layering of the electrolyte in the battery, contributing to the uniform density of the electrolyte, and greatly improving the service life of the battery.
[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. Electrolyte circulation structure, characterized in that, It includes a battery cell (1) and an injection channel. The injection channel is longitudinally arranged on the side wall of the battery cell (1). There is a liquid inlet buffer zone (3) at the lower end port of the injection channel. A baffle plate (4) is provided in the liquid inlet buffer zone (3). One side of the baffle plate (4) away from the inner wall of the battery cell (1) is arranged at an angle with the horizontal direction. The baffle plate (4) is driven by inertia to approach the injection channel to squeeze the electrolyte in the liquid inlet buffer zone (3) into the injection channel. The upper end outlet of the injection channel extends above the liquid level of the battery cell (1).
2. The electrolyte circulation structure according to claim 1, wherein, A plurality of longitudinal injection pipes (2) are provided on the side wall of the battery cell (1). Both the upper and lower ends of the injection pipe (2) are in an open state. The inner cavity of the injection pipe (2) forms an injection channel. An inlet buffer zone (3) is formed between the lower end of the injection pipe (2) and the bottom of the battery cell (1).
3. The electrolyte circulation structure according to claim 2, wherein, A horizontally extending baffle plate (5) is connected to the lower end of the injection pipe (2). The baffle plate (5) is parallel to the bottom of the battery cell (1). The baffle plate (4) is longitudinally arranged between the baffle plate (5) and the bottom of the battery cell (1). The baffle plate (4) has a degree of freedom in the horizontal direction. The baffle plate (5), the bottom of the battery cell (1), the side wall of the battery cell (1), and the baffle plate (4) enclose the liquid inlet buffer zone (3).
4. The electrolyte circulation structure according to claim 1, characterized in that The injection channel is parallel to the direction of the plates in the electrode group in the battery cell (1). A plurality of injection channels are arranged at intervals in the horizontal direction.
5. The electrolyte circulation structure according to claim 4, wherein Only one liquid inlet buffer zone (3) is provided on one side of the battery cell (1). The liquid inlet buffer zone (3) extends in the horizontal direction. The liquid inlet buffer zone (3) communicates with a plurality of injection channels on the same side of the battery cell (1) at the same time.
6. The electrolyte circulation structure according to claim 1, wherein The height difference between the upper end of the injection channel and the liquid level of the battery cell (1) is ≥ 10 mm.
7. The electrolyte circulation structure according to claim 1, wherein An edge siphon pipe fitting (7) is further provided in the battery cell (1). The edge siphon pipe fitting (7) includes a first pipe fitting and a second pipe fitting arranged horizontally at intervals. The upper ends of the first pipe fitting and the second pipe fitting are connected by a transverse connecting pipe fitting. The lower ends of the first pipe fitting and the second pipe fitting are flush.
8. The electrolyte circulation structure according to claim 7, wherein, The first pipe fitting is attached to the inner side wall of the battery cell (1). The lower end of the first pipe fitting communicates with the liquid inlet buffer zone (3) or is located on one side of the liquid inlet buffer zone (3).
9. The electrolyte circulation structure according to claim 7, wherein, An air extraction port (8) is provided on the transverse connecting pipe fitting. The air extraction port (8) is provided with a one-way exhaust valve or a sealing cover.
10. A storage battery, characterized in that, An electrolyte circulation structure as described in any one of the above claims 1-9 is adopted.