Electrolyte barrel suitable for electrolyte storage
By using aluminum inner liner and stainless steel barrel in the electrolyte barrel, combined with cooling medium and control valves and other devices, the space, temperature and cost problems of low-temperature electrolyte storage are solved, and the stable storage and efficient transportation of electrolyte are achieved. , extends the service life of the electrolyte.
Patent Information
- Application Number
- CN202420832627.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-19
AI Technical Summary
In the prior art, the storage of low-temperature electrolytes has problems such as limited space, uneven temperature, high cost, and high construction costs of hazardous chemical safety and environmental protection standards. Especially for small and medium-sized enterprises, the temporary use plan of low-temperature electrolytes is relatively high. , and unstable additives can easily cause the electrolyte to deteriorate during storage, affecting the performance of the battery cell.
An electrolyte barrel consisting of an aluminum inner liner and a stainless steel barrel body is designed. A cooling medium storage cavity and spiral pipe are arranged between the inner liner and the barrel body. The reduction performance of aluminum prevents the electrolyte from oxidizing, and a control valve is installed. The liquid level device, pressure gauge and spray device, the cooling medium keeps the electrolyte at a constant temperature of 0-10°C, and improves storage performance.
Through the combination of aluminum inner liner and cooling medium, the storage performance of the electrolyte is improved, the storage time of the electrolyte is extended, the transportation and storage costs are reduced, and the electrolyte batch is provided, which is suitable for electrolyte transportation , production and storage.
Smart Images
Figure CN222224958U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lithium ion batteries, and in particular relates to an electrolyte barrel suitable for storing electrolyte. Background Art
[0002] Lithium-ion battery electrolyte is the carrier of ion transmission in the battery, plays the role of conducting ions between the positive and negative electrodes of the lithium battery, and is one of the main raw materials of lithium-ion batteries. With the improvement of performance requirements for power batteries, energy storage batteries and high-end digital batteries, the matching research of electrolyte and material system, battery design and application scenarios will become increasingly important.
[0003] In order to meet the higher requirements of the market, the types and amounts of additives used in electrolytes have increased significantly, which will pose greater challenges to electrolyte storage. In particular, unstable additives such as methylene disulfonate (MMDS), diethylene sulfate (DTD) and silanes are extremely unstable during electrolyte storage, which can easily lead to decomposition and deterioration of electrolyte components, causing the electrolyte to turn yellow and turbid, and ultimately affect the performance of the battery cell. Currently, low-temperature electrolytes with unstable additives are mainly improved by lowering the storage temperature. The general process is to inject the electrolyte into a stainless steel barrel, then put it into a low-temperature cabinet, and then put it into the injection room when it is used. The space in the low-temperature cabinet is limited, and the electrolyte storage space is small. Secondly, the temperature in the low-temperature cabinet is uneven, resulting in poor batch stability of the electrolyte. In addition, the cost of the low-temperature cabinet with explosion-proof capability is high, and the construction cost will be higher if it meets the production and use standards of hazardous chemicals that are safe and environmentally friendly. Currently, low-temperature cabinet storage is only used as a temporary solution for enterprises. When it is used in large quantities, huge amounts of money have to be spent to build low-temperature storage libraries. In order to save the production costs of enterprises, and in view of the fact that small and medium-sized enterprises use a small amount of low-temperature electrolyte, it is indeed necessary to provide an electrolyte barrel for electrolyte storage. Utility Model Content
[0004] The utility model aims to provide an electrolyte barrel suitable for storing electrolyte, so as to solve at least one of the above problems existing in the prior art.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An electrolyte barrel suitable for storing electrolyte, comprising an inner liner and a barrel body sleeved on the outer side of the inner liner, wherein the inner liner is made of aluminum or aluminum alloy; an injection port for injecting electrolyte into the inner liner is installed at the upper end of the barrel body, and a discharge port for discharging the electrolyte in the inner liner to the outside is installed at the lower end of the barrel body; a cooling medium accommodating chamber is arranged between the inner liner and the barrel body, a lower interface and an upper interface both connected to the cooling medium accommodating chamber are installed on the barrel body, and a spiral pipe with both ends connected to the cooling medium accommodating chamber is installed in the inner liner.
[0007] As a preferred technical solution in the utility model, the liquid discharge port, the liquid injection port, the lower interface and the upper interface are all equipped with control valves.
[0008] As a preferred technical solution in the utility model, a pressure gauge and a safety valve extending outside the barrel are installed on the inner liner.
[0009] As a preferred technical solution in the utility model, a liquid level meter fixed to the barrel body through a flange is installed in the inner tank.
[0010] As a preferred technical solution in the utility model, the liquid level meter includes an air-conducting cable, a measuring and controlling level meter and a transmitter. The transmitter is arranged on the inner bottom surface of the inner tank, the measuring and controlling level meter is installed outside the barrel, and the transmitter and the measuring and controlling level meter are connected through the air-conducting cable.
[0011] As a preferred technical solution in the present invention, the outer skin of the air guide cable is made of polyurethane material.
[0012] As a preferred technical solution in the utility model, a spray device is installed on the inner top of the inner tank, and a cleaning interface connected to the spray device is provided at the upper end of the barrel body; the spray device includes a spray pipe connected to the cleaning interface, and a spray ball is provided at the outlet of the spray pipe.
[0013] As a preferred technical solution in the utility model, the lower part of the barrel body is provided with supporting feet, and a filter screen is arranged at the drain port.
[0014] As a preferred technical solution in the present invention, the width of the cooling medium accommodating cavity formed between the inner liner and the barrel body is 1-10 mm.
[0015] As a preferred technical solution in the present utility model, the barrel body is made of stainless steel.
[0016] Beneficial effects: The utility model stores the electrolyte in an inner tank made of aluminum or aluminum alloy, and prevents the electrolyte from oxidizing or discoloring side reactions due to the reducing properties of aluminum, thereby improving the storage performance of the electrolyte; wherein the cooling medium accommodating cavity and the spiral pipe can both store cooling medium, so that the cooling medium can better conduct cooling to the electrolyte, so that the electrolyte is in a relatively constant temperature environment (generally a low temperature environment of 0-10°C), thereby improving the storage performance of the electrolyte, and allowing the electrolyte barrel to be used in electrolyte transportation, electrolyte storage in electrolyte production plants, and electrolyte storage and production in battery core factories, thereby extending the storage time of the electrolyte and greatly reducing transportation and storage costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model.
[0018] In the figure: 1- liner; 2- barrel body; 3- support leg; 4- level gauge; 5- drain port; 6- filling port; 7- lower interface; 8- upper interface; 9- safety valve; 10- pressure gauge; 11- spray device; 12- gas guide cable; 13- measurement and control level gauge; 14- transmitter; 15- spiral pipe. DETAILED DESCRIPTION
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.
[0020] Example:
[0021] like Figure 1 As shown, this embodiment provides an electrolyte barrel suitable for storing electrolyte, including an inner liner 1 and a barrel body 2 sleeved on the outer side of the inner liner 1, the inner liner 1 is made of aluminum or aluminum alloy. In practice, the reduction property of aluminum can prevent the electrolyte from being oxidized or discolored, thereby improving the storage performance of the electrolyte; the upper end of the barrel body 2 is provided with a liquid injection port 6 for injecting electrolyte into the inner liner 1, and the lower end of the barrel body 2 is provided with a liquid discharge port 5 for discharging the electrolyte in the inner liner 1 to the outside, so as to facilitate the injection and discharge of the electrolyte; A cooling medium accommodating chamber is provided between the inner liner 1 and the barrel body 2, a lower interface 7 and an upper interface 8 both connected to the cooling medium accommodating chamber are installed on the barrel body 2, and a spiral pipe 15 with both ends connected to the cooling medium accommodating chamber is installed in the inner liner 1. In practice, the cooling medium can be controlled to flow between the cooling medium accommodating chamber and the spiral pipe 15, so that the cooling medium can better conduct cooling to the electrolyte, so that the electrolyte is in a relatively constant temperature environment (generally a low temperature environment of 0-10°C), thereby improving the storage performance of the electrolyte.
[0022] It should be noted that the cooling medium can be cooling water or cooling compressed gas.
[0023] The utility model stores the electrolyte in an inner tank 1 made of aluminum or aluminum alloy, and prevents the electrolyte from oxidizing or discoloring by virtue of the reducing property of aluminum, thereby improving the storage performance of the electrolyte; wherein the cooling medium accommodating cavity and the spiral pipe 15 can both store the cooling medium, thereby enabling the cooling medium to be better transferred to the electrolyte, so that the electrolyte is in a relatively constant temperature environment (generally a low temperature environment of 0-10°C), thereby improving the storage performance of the electrolyte, and enabling the electrolyte barrel to be used in electrolyte transportation, electrolyte storage in electrolyte production plants, and electrolyte storage and production in battery cell plants, thereby extending the storage time of the electrolyte and greatly reducing the transportation and storage costs.
[0024] As a preferred implementation scheme in this embodiment, it needs to be further explained that the drain port 5, the injection port 6, the lower interface 7 and the upper interface 8 are all installed with control valves to achieve circulation control and flow control.
[0025] As a preferred implementation scheme in this embodiment, it needs to be further explained that the inner liner 1 is installed with a pressure gauge 10 and a safety valve 9 extending to the outside of the barrel 2, so as to facilitate real-time observation of the pressure in the inner liner 1 and improve safety.
[0026] As a preferred implementation scheme in this embodiment, it needs to be further explained that a liquid level meter 4 fixed to the barrel body 2 through a flange is installed in the inner liner 1, so as to facilitate real-time observation of the amount of electrolyte in the inner liner 1, conveniently record the remaining weight of the electrolyte in the barrel, and avoid weighing the electrolyte during use.
[0027] As a preferred implementation scheme in this embodiment, it needs to be further explained that the liquid level meter 4 includes an air-conducting cable 12, a measuring and controlling level meter 13 and a transmitter 14. The transmitter 14 is arranged on the inner bottom surface of the inner liner 1, and the measuring and controlling level meter 13 is installed outside the barrel body 2. The transmitter 14 is connected to the measuring and controlling level meter 13 through the air-conducting cable 12, which is convenient for remote monitoring of the amount of electrolyte in the inner liner 1.
[0028] As a preferred implementation scheme in this embodiment, it needs to be further explained that the outer skin of the gas-conducting cable 12 is made of polyurethane material, which can prevent the corrosion of the cable by the electrolyte.
[0029] As a preferred implementation scheme in this embodiment, it needs to be further explained that a spray device 11 is installed on the inner top of the inner tank 1, and a cleaning interface connected to the spray device 11 is provided at the upper end of the barrel body 2, and the top of the cleaning interface can be connected to an external faucet; the spray device 11 includes a spray pipe connected to the cleaning interface, and a spray ball is provided at the outlet of the spray pipe, which can flush the inside of the inner tank 1.
[0030] As a preferred implementation scheme in this embodiment, it needs to be further explained that a support leg 3 is provided at the lower part of the barrel body 2 to facilitate the transportation of the electrolyte barrel, and a filter is provided at the drain port 5 to control the outlet flow rate and facilitate sampling and testing.
[0031] As a preferred implementation scheme in this embodiment, it needs to be further explained that the width of the cooling medium accommodating cavity formed between the inner liner 1 and the barrel body 2 is 1-10 mm, which can ensure the cooling effect on the electrolyte.
[0032] As a preferred implementation scheme in this embodiment, it needs to be further explained that the barrel body 2 is made of stainless steel, including 201, 202, 304, and 316, to ensure that the barrel body has strong rigidity to prevent the electrolyte from colliding and leaking during transportation and use.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An electrolyte barrel suitable for storing electrolyte, characterized in that: The invention comprises an inner liner (1) and a barrel body (2) sleeved on the outer side of the inner liner (1); the inner liner (1) is made of aluminum or aluminum alloy; the upper end of the barrel body (2) is provided with a liquid injection port (6) for injecting electrolyte into the inner liner (1); the lower end of the barrel body (2) is provided with a liquid discharge port (5) for discharging the electrolyte in the inner liner (1) to the outside; a cooling medium accommodating chamber is provided between the inner liner (1) and the barrel body (2); a lower interface (7) and an upper interface (8) both connected to the cooling medium accommodating chamber are provided on the barrel body (2); and a spiral pipe (15) with both ends connected to the cooling medium accommodating chamber is provided in the inner liner (1).
2. An electrolyte barrel suitable for electrolyte storage according to claim 1, characterized in that: The liquid discharge port (5), the liquid injection port (6), the lower interface (7) and the upper interface (8) are all equipped with control valves.
3. An electrolyte barrel suitable for electrolyte storage according to claim 1, characterized in that: The inner container (1) is provided with a pressure gauge (10) and a safety valve (9) extending outside the barrel (2).
4. The electrolyte barrel suitable for electrolyte storage according to claim 1, characterized in that: A liquid level meter (4) fixed to the barrel body (2) via a flange is installed in the inner container (1).
5. An electrolyte barrel suitable for electrolyte storage according to claim 4, characterized in that: The liquid level meter (4) comprises an air-conducting cable (12), a measuring and controlling level meter (13) and a transmitter (14); the transmitter (14) is arranged on the inner bottom surface of the inner tank (1); the measuring and controlling level meter (13) is installed outside the barrel body (2); and the transmitter (14) and the measuring and controlling level meter (13) are connected via the air-conducting cable (12).
6. An electrolyte barrel suitable for electrolyte storage according to claim 5, characterized in that: The outer sheath of the air guide cable (12) is made of polyurethane material.
7. An electrolyte barrel suitable for electrolyte storage according to claim 1, characterized in that: A spray device (11) is installed at the inner top of the inner container (1), and a cleaning interface connected to the spray device (11) is provided at the upper end of the barrel body (2); the spray device (11) comprises a spray pipe connected to the cleaning interface, and a spray ball is provided at the outlet of the spray pipe.
8. The electrolyte barrel suitable for electrolyte storage according to claim 1, characterized in that: The lower part of the barrel body (2) is provided with a support foot (3), and the drain port (5) is provided with a filter screen.
9. The electrolyte barrel suitable for electrolyte storage according to claim 1, characterized in that: The width of the cooling medium accommodating cavity formed between the inner liner (1) and the barrel body (2) is 1-10 mm.
10. An electrolyte barrel suitable for storing electrolyte according to claim 1, characterized in that: The barrel body (2) is made of stainless steel.