CN219696690U - Liquid storage tank - Google Patents
Liquid storage tank Download PDFInfo
- Publication number
- CN219696690U CN219696690U CN202321259149.2U CN202321259149U CN219696690U CN 219696690 U CN219696690 U CN 219696690U CN 202321259149 U CN202321259149 U CN 202321259149U CN 219696690 U CN219696690 U CN 219696690U
- Authority
- CN
- China
- Prior art keywords
- component
- tank body
- electrolytic
- electrolyte
- liquid outlet
- 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.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 239000003792 electrolyte Substances 0.000 claims abstract description 28
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 8
- 239000008151 electrolyte solution Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 10
- -1 lithium hexafluorophosphate Chemical compound 0.000 abstract description 8
- 238000000354 decomposition reaction Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 229910003002 lithium salt Inorganic materials 0.000 description 3
- 159000000002 lithium salts Chemical class 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Filling, Topping-Up Batteries (AREA)
Abstract
In order to avoid the reaction of water in the air and lithium hexafluorophosphate in the electrolyte to generate HF acid during the storage and use of the electrolyte and influence the electrochemical performance and the safety performance of the battery cell, the utility model provides a liquid storage tank which comprises a tank body, an electrolysis component and an electrifying component, wherein the electrolysis component is positioned on the tank body and is electrically connected with the electrifying component, and the electrolysis component is used for electrolyzing water in the electrolyte in the tank body; according to the utility model, the electrolytic component is arranged on the tank body, voltage is applied to the electrolytic component through the electrifying component, so that current is electrolyzed through the electrolytic part to decompose the moisture in the electrolyte flowing through the electrolytic component, the generation of HF acid is avoided, the decomposition of lithium hexafluorophosphate is reduced, and the electrical property and the safety performance of the battery core are improved; the tank body is easy to operate and low in processing cost.
Description
Technical Field
The utility model relates to the technical field of electrolyte filling, in particular to a liquid storage tank.
Background
The electrolyte is an important component of the lithium ion battery, and the weight of the electrolyte accounts for 15% and the volume of the whole battery material accounts for 32%. It follows that the performance of the electrolyte and its compatibility with both electrodes directly affect the performance of the lithium ion battery.
LiPF 6 Is the most commonly used electrolyte lithium salt, which has the advantages of stable cathode, large discharge capacity, high conductivity, small internal resistance and high charge and discharge speed, however, liPF 6 Is extremely sensitive to moisture and HF acid, is not resistant to high temperature, and is easy to undergo decomposition reaction.
The battery cell liquid injection process is a key process for processing the lithium ion battery, and when the liquid injection environment does not reach the standard or the liquid injection time is too long, water in the atmosphere can react with lithium hexafluorophosphate to generate HF acid, so that the electrochemical performance and the safety performance of the battery cell are greatly influenced; therefore, how to overcome the above-mentioned technical problems and drawbacks becomes an important problem to be solved.
Disclosure of Invention
Aiming at the problem that water in the atmosphere can react with lithium hexafluorophosphate to generate HF acid and greatly influence the electrochemical performance and the safety performance of the battery cell, the utility model provides a liquid storage tank.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a liquid storage tank which comprises a tank body, an electrolysis component and an energizing component, wherein the electrolysis component is positioned on the tank body and is electrically connected with the energizing component, and the electrolysis component is used for electrolyzing water in electrolyte in the tank body.
Optionally, the electrolysis component comprises an anode cavity and a cathode cavity, wherein an anode is arranged in the anode cavity, and a cathode is arranged in the cathode cavity.
Optionally, the energizing component includes a positive wire and a negative wire, the positive wire is electrically connected with the anode, and the negative wire is electrically connected with the cathode.
Optionally, the positive electrode lead and the negative electrode lead are used for communicating with an external power source.
Optionally, the tank further comprises an insulating layer, and the insulating layer is arranged on the outer surface of the tank body.
Optionally, the insulating layer is selected from one of insulating varnish and insulating adhesive.
Optionally, the tank body is provided with a liquid outlet, and the electrolysis component is located at the liquid outlet.
Optionally, the electrolytic tank further comprises a liquid outlet pipe, one end of the electrolytic component is connected with the liquid outlet of the tank body, the other end of the electrolytic component is connected with the liquid outlet pipe, and the electrolytic component discharges the electrolyzed electrolyte through the liquid outlet pipe.
Optionally, the material of the tank body is metal alloy.
Optionally, the metal alloy is selected from one of aluminum alloy and copper alloy.
According to the liquid storage tank provided by the utility model, the electrolytic component is arranged on the tank body, and voltage is applied to the electrolytic component through the electrifying component, so that current is electrolyzed through the electrolytic component to the moisture in the electrolyte flowing through the electrolytic component, the moisture in the electrolyte is decomposed, the generation of HF acid is avoided, the decomposition of lithium hexafluorophosphate as lithium salt is reduced, and the electrical property and the safety performance of the battery core are improved; the tank body is easy to operate and low in processing cost.
Drawings
FIG. 1 is a schematic diagram of a liquid storage tank according to an embodiment of the present utility model;
1-tank body, 2-insulating layer, 3-electrolytic component, 4-positive electrode wire, 5-negative electrode wire, 6-drain pipe, 7-electrolyte.
Reference numerals in the drawings of the specification are as follows:
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model 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 utility model.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "side", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, in one embodiment, the utility model provides a liquid storage tank, which comprises a tank body 1, an electrolysis component 3 and an energizing component, wherein the electrolysis component 3 is positioned on the tank body 1, the electrolysis component 3 is electrically connected with the energizing component, and the electrolysis component 3 is used for electrolyzing moisture in an electrolyte 7 in the tank body 1.
Specifically, the electrolytic component 3 is arranged on the tank body 1, and voltage is applied to the electrolytic component 3 through the electrifying component, so that current is electrolyzed through the electrolytic component to the moisture in the electrolyte 7 flowing through the electrolytic component 3, the moisture in the electrolyte 7 is decomposed, the generation of HF acid is avoided, the decomposition of lithium hexafluorophosphate is reduced, and the electrical property and the safety performance of the battery core are improved; the tank body 1 is easy to operate and low in processing cost.
Specifically, the electrolysis unit 3 is electrically connected with a time control unit, so that voltage is applied to the indirectly electrified tank 1; the time of single power-on of the tank body 1 is 10s-10min, and the frequency is 0.5-2h once.
Referring to fig. 1, in one embodiment, the electrolytic member 3 includes an anode chamber in which an anode is disposed and a cathode chamber in which a cathode is disposed.
Referring to fig. 1, in an embodiment, the energizing member includes a positive electrode lead 4 and a negative electrode lead 5, the positive electrode lead 4 is electrically connected to the anode, and the negative electrode lead 5 is electrically connected to the cathode.
Specifically, the positive electrode lead 4 and the negative electrode lead 5 provide electric energy for the electrolytic component 3, so that the electrolytic component 3 electrolyzes water in the electrolyte 7 flowing through the electrolytic component 3, so that the water in the electrolyte 7 is decomposed, the generation of HF acid is avoided, the decomposition of lithium hexafluorophosphate is reduced, and the electrical property and the safety performance of the battery cell are improved.
Referring to fig. 1, in one embodiment, the positive lead 4 and the negative lead 5 are used for communication with an external power source.
The external power supply provides current for the positive electrode lead 4 and the negative electrode lead 5, and further provides electric energy for the electrolytic component 3, the electric energy component is used for applying voltage to the electrolytic component 3, so that the current is electrolyzed through the electrolytic part by convection of the water in the electrolyte 7 passing through the electrolytic component 3, the water in the electrolyte 7 is decomposed, the generation of HF acid is avoided, the decomposition of lithium hexafluorophosphate as lithium salt is reduced, and the electrical property and the safety performance of the battery core are improved.
Referring to fig. 1, in an embodiment, the insulation layer 2 is further included, and the insulation layer 2 is disposed on the outer surface of the can 1.
The outer surface of the tank body 1 is provided with the insulating layer 2, so that safety accidents caused by electric leakage of the tank body 1 are avoided, and the production efficiency of the tank body 1 for canning the battery cells is not affected.
Referring to fig. 1, in one embodiment, the insulating layer 2 is selected from one of insulating varnish and insulating paste.
The insulating paint and the insulating glue are made of high molecular polymers, and can be solidified into an insulating hard film or an insulating whole under certain conditions, so that the tank body 1 is insulated and protected, and safety accidents caused by electric leakage of the tank body 1 are avoided.
Referring to fig. 1, in one embodiment, the tank 1 is provided with a liquid outlet, and the electrolytic component 3 is located at the liquid outlet.
It should be noted that, when the tank body 1 is installed, the tank body is inverted, so that the liquid outlet is close to the ground, and the electrolyte 7 in the tank body 1 can flow out conveniently under the action of gravity.
Referring to fig. 1, in an embodiment, the electrolytic device further includes a liquid outlet pipe 6, one end of the electrolytic component 3 is connected to the liquid outlet of the tank 1, the other end of the electrolytic component 3 is connected to the liquid outlet pipe 6, and the electrolytic component 3 discharges the electrolyzed electrolyte 7 through the liquid outlet pipe 6.
The liquid outlet pipe 6 is convenient for connecting the electrolytic component 3, so that the electrolyte 7 electrolyzed by the electrolytic component 3 is recovered and canned.
Referring to fig. 1, in an embodiment, the material of the can 1 is a metal alloy.
The hardness of the metal alloy is generally greater than the hardness of any of the metals in its components; thereby the service time is longer and the expense is saved. And the metal alloy has corrosion resistance, so that the electrolyte 7 can be reduced to corrode the metal alloy, the service life of the metal alloy is prolonged, and the cost is saved.
Referring to fig. 1, in one embodiment, the metal alloy is selected from one of aluminum alloy and copper alloy.
It should be noted that, the aluminum alloy and the copper alloy have good conductivity, so that the voltage generated by the power supply can be better transferred to the moisture in the electrolyte 7, which is favorable for the decomposition of the moisture in the electrolyte 7, and the generation of HF acid is avoided.
The foregoing description of the preferred embodiments of the utility model 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 utility model.
Claims (10)
1. A liquid storage tank, characterized in that: the electrolytic device comprises a tank body, an electrolytic component and an energizing component, wherein the electrolytic component is positioned on the tank body and is electrically connected with the energizing component, and the electrolytic component is used for electrolyzing water in electrolyte in the tank body.
2. A fluid reservoir as defined in claim 1, wherein: the electrolysis component comprises an anode cavity and a cathode cavity, wherein an anode is arranged in the anode cavity, and a cathode is arranged in the cathode cavity.
3. A liquid storage tank as defined in claim 2, wherein: the energizing component comprises a positive electrode wire and a negative electrode wire, wherein the positive electrode wire is electrically connected with the anode, and the negative electrode wire is electrically connected with the cathode.
4. A fluid reservoir as defined in claim 3, wherein: the positive electrode lead and the negative electrode lead are used for communicating with an external power supply.
5. A fluid reservoir as defined in claim 1, wherein: the tank further comprises an insulating layer, and the insulating layer is arranged on the outer surface of the tank body.
6. The fluid reservoir of claim 5, wherein: the insulating layer is selected from one of insulating paint and insulating adhesive.
7. A fluid reservoir as defined in claim 1, wherein: the tank body is provided with a liquid outlet, and the electrolysis part is positioned at the liquid outlet.
8. The fluid reservoir of claim 7, wherein: the electrolytic device comprises a tank body, and is characterized by further comprising a liquid outlet pipe, wherein one end of the electrolytic component is connected with the liquid outlet of the tank body, the other end of the electrolytic component is connected with the liquid outlet pipe, and the electrolytic component discharges electrolytic solution after electrolysis through the liquid outlet pipe.
9. A fluid reservoir as defined in claim 1, wherein: the material of the tank body is metal alloy.
10. The fluid reservoir of claim 9, wherein: the metal alloy is selected from one of aluminum alloy and copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321259149.2U CN219696690U (en) | 2023-05-23 | 2023-05-23 | Liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321259149.2U CN219696690U (en) | 2023-05-23 | 2023-05-23 | Liquid storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696690U true CN219696690U (en) | 2023-09-15 |
Family
ID=87961745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321259149.2U Active CN219696690U (en) | 2023-05-23 | 2023-05-23 | Liquid storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696690U (en) |
-
2023
- 2023-05-23 CN CN202321259149.2U patent/CN219696690U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |