A device for reducing the loss of electrolyte additives

Abstract

The utility model is suitable for the technical field of electrolyte, provides a device that reduces electrolyte additive loss, including lithium battery shell, the both ends of lithium battery shell are equipped with top cover and bottom cover respectively, the opposite surface of top cover and bottom cover is installed with positive electrode and negative electrode respectively, the inside of lithium battery shell is located between positive electrode and negative electrode and is equipped with the diaphragm, the both sides of the inside of lithium battery shell are equipped with the storage agent pipe of diaphragm, the inside of storage agent pipe places has electrolyte additive, the both ends of storage agent pipe are equipped with SEI membrane. This scheme is through setting up storage agent pipe, and electrolyte additive is placed in the inside of storage agent pipe, and electrolyte additive can slowly release to electrolyte, effectively reduces the loss of electrolyte additive, improves the performance and service life of battery, simultaneously, the SEI membrane of storage agent pipe both ends can prevent electrolyte additive from releasing too fast, further improves the utilization efficiency of electrolyte additive.

Description

Technical Field

[0001] This invention belongs to the field of electrolyte technology, and particularly relates to a device for reducing the loss of electrolyte additives. Background Technology

[0002] Electrolytes are liquid media used in devices such as batteries, supercapacitors, and fuel cells. They facilitate the flow of ions between electrodes, thereby enabling charge transfer. Common electrolytes include acidic, alkaline, and neutral solutions, with specific compositions varying depending on the application.

[0003] Electrolyte additives are chemical substances added to electrolytes to improve battery performance, extend battery life, or enhance safety. There are many types of additives, including common electrolyte additives such as stabilizers, wetting agents, corrosion inhibitors, ionic conductivity enhancers, and explosion retardants. They can have a positive impact on the stability, ionic conductivity, and corrosion resistance of the electrolyte.

[0004] In existing lithium batteries, the electrolyte's additives are often gradually lost during use due to electrolyte circulation and the heat and chemical reactions generated during charging and discharging, thus affecting battery performance and lifespan. To reduce the loss of electrolyte additives and improve battery stability and lifespan, this invention proposes a device for reducing electrolyte additive loss. Utility Model Content

[0005] The purpose of this invention is to provide a device for reducing the loss of electrolyte additives, so as to solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for reducing the loss of electrolyte additives, comprising a lithium battery casing, wherein the two ends of the lithium battery casing are through-connected, and the two ends of the lithium battery casing are respectively provided with a top cover and a bottom cover, and a positive electrode and a negative electrode are respectively installed on the opposite surfaces of the top cover and the bottom cover, and an isolation membrane is provided inside the lithium battery casing between the positive electrode and the negative electrode.

[0007] Inside the lithium battery casing, there are reservoir tubes on both sides of the separator. The two ends of the reservoir tubes are connected. Electrolyte additives are placed inside the reservoir tubes. SEI membranes are sleeved on both ends of the reservoir tubes. The lithium battery casing contains electrolyte.

[0008] Preferably, the top cover and the bottom cover have two symmetrical mounting slots, and the positive electrode and the negative electrode are respectively installed inside the two mounting slots.

[0009] Preferably, the separator is provided with fixing blocks at both ends, and the lithium battery casing is provided with symmetrical fixing grooves on both sides inside, and the fixing blocks are installed in the fixing grooves and fixed by screws.

[0010] Preferably, the reservoir tube comprises a plurality of individual tubes, which are arranged in an equidistant array.

[0011] Preferably, several of the single tubes are interconnected in the transverse or longitudinal direction.

[0012] Preferably, mounting blocks are provided on both sides of the lithium battery casing, and screws are inserted through the mounting blocks.

[0013] This utility model has at least the following beneficial effects:

[0014] This invention provides a device for reducing the loss of electrolyte additives. By setting up a storage tube and placing the electrolyte additive inside the storage tube, the electrolyte additive can be slowly released into the electrolyte, effectively reducing the loss of electrolyte additives and improving battery performance and lifespan. At the same time, the SEI film sleeved at both ends of the storage tube can prevent the electrolyte additive from being released too quickly, further improving the utilization efficiency of the electrolyte additive. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the single tube of this utility model connected laterally;

[0018] Figure 4 This is a schematic diagram of the single tube connected longitudinally according to the present invention.

[0019] In the attached diagram, the following are the reference numerals: 1. Lithium battery casing; 2. Top cover; 3. Bottom cover; 4. Mounting groove; 5. Mounting block; 6. Positive electrode; 7. Negative electrode; 8. Reservoir tube; 9. SEI membrane; 10. Separator membrane; 11. Fixing groove; 12. Fixing block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0021] Example

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a technical solution: a device for reducing the loss of electrolyte additives, including a lithium battery casing 1, with both ends of the lithium battery casing 1 being through-connected, and a top cover 2 and a bottom cover 3 respectively provided at both ends of the lithium battery casing 1. Specifically, the top cover 2 and the bottom cover 3 are welded to the lithium battery casing 1, and a positive electrode 6 and a negative electrode 7 are respectively installed on the opposite surfaces of the top cover 2 and the bottom cover 3. An isolation membrane 10 is provided inside the lithium battery casing 1 between the positive electrode 6 and the negative electrode 7.

[0023] Inside the lithium battery casing 1, on both sides of the separator 10, there are reservoir tubes 8. The two ends of the reservoir tubes 8 are connected. Electrolyte additives are placed inside the reservoir tubes 8. SEI membranes 9 are sleeved on both ends of the reservoir tubes 8. The lithium battery casing 1 contains electrolyte.

[0024] In this embodiment, the reservoir tube 8 provides an environment for storing and slowly releasing electrolyte additives. When the electrolyte circulates in the lithium battery, the SEI film 9 can effectively slow down the rate at which electrolyte additives are lost from the reservoir tube 8, ensuring that the additives can continue to function for a longer period of time. By using this device, the loss of electrolyte additives can be significantly reduced during the use of the lithium battery, thereby extending the battery's lifespan and improving the battery's stability and safety.

[0025] Furthermore, two mounting slots 4 are symmetrically formed on opposite sides of the top cover 2 and the bottom cover 3, and the positive electrode 6 and the negative electrode 7 are respectively installed inside the two mounting slots 4.

[0026] In this embodiment, both the positive electrode 6 and the negative electrode 7 are fixedly connected to the mounting groove 4. By using the mounting groove 4 to install and fix the positive electrode 6 and the negative electrode 7, the stability and reliability of the electrodes can be ensured, while facilitating subsequent assembly and maintenance.

[0027] Furthermore, the separator 10 has fixing blocks 12 at both ends, and the lithium battery casing 1 has symmetrical fixing grooves 11 on both sides inside. The fixing blocks 12 are installed in the fixing grooves 11 and fixed by screws.

[0028] In this embodiment, by using the fixing block 12 and the fixing groove 11 to install and fix the separator 10, the stability and reliability of the separator 10 can be ensured, while facilitating subsequent assembly and maintenance. The separator 10 can effectively isolate the positive electrode 6 and the negative electrode 7, prevent internal short circuits in the battery, and improve battery safety.

[0029] Furthermore, the storage tube 8 includes several individual tubes, which are distributed in an equidistant array.

[0030] In this embodiment, several single tubes are provided to facilitate the storage of a large amount of additives.

[0031] Furthermore, several individual tubes are interconnected in the horizontal or vertical direction.

[0032] In this embodiment, the individual tubes are interconnected in the horizontal or vertical direction, which facilitates the storage of a large number of additives.

[0033] Furthermore, mounting blocks 5 are provided on both sides of the lithium battery casing 1, and screws are inserted through the mounting blocks 5.

[0034] In this embodiment, the mounting block 5 is fixedly connected to the lithium battery casing 1, and the mounting block 5 facilitates the fixing of the lithium battery casing 1.

[0035] The working principle and usage process of this utility model: After the utility model is installed, work according to the above implementation method until all working steps are completed.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for reducing electrolyte additive loss, characterized in that, The lithium battery housing (1) includes a lithium battery casing (1) with both ends of the lithium battery casing (1) being through-connected. The lithium battery casing (1) has a top cover (2) and a bottom cover (3) at both ends of the lithium battery casing (1). A positive electrode (6) and a negative electrode (7) are respectively installed on the opposite sides of the top cover (2) and the bottom cover (3). An isolation membrane (10) is provided inside the lithium battery casing (1) between the positive electrode (6) and the negative electrode (7). The lithium battery casing (1) has storage tubes (8) located on both sides of the separator (10) inside. The two ends of the storage tubes (8) are connected. Electrolyte additives are placed inside the storage tubes (8). SEI membranes (9) are sleeved on both ends of the storage tubes (8). Electrolyte is contained inside the lithium battery casing (1).

2. The device for reducing electrolyte additive loss according to claim 1, characterized in that: The top cover (2) and the bottom cover (3) are symmetrically provided with two mounting slots (4), and the positive electrode (6) and the negative electrode (7) are respectively installed inside the two mounting slots (4).

3. The device for reducing electrolyte additive loss according to claim 1, characterized in that: The separator (10) has fixing blocks (12) at both ends. The lithium battery casing (1) has symmetrical fixing grooves (11) on both sides inside. The fixing blocks (12) are installed in the fixing grooves (11) and fixed by screws.

4. The device for reducing electrolyte additive loss according to claim 1, characterized in that: The reservoir tube (8) includes several individual tubes, which are distributed in an equidistant array.

5. The device for reducing electrolyte additive loss according to claim 4, characterized in that: Several of the aforementioned single tubes are interconnected in the transverse or longitudinal direction.

6. The device for reducing electrolyte additive loss according to claim 1, characterized in that: The lithium battery casing (1) has mounting blocks (5) on both sides, and screws are inserted through the mounting blocks (5).

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