CN216958231U - Electrolyte heating device - Google Patents
Electrolyte heating device Download PDFInfo
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- CN216958231U CN216958231U CN202220260270.6U CN202220260270U CN216958231U CN 216958231 U CN216958231 U CN 216958231U CN 202220260270 U CN202220260270 U CN 202220260270U CN 216958231 U CN216958231 U CN 216958231U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to the technical field of battery preparation, and provides an electrolyte heating device, which comprises: a liquid conveying pipe and a heating element; one end of the infusion tube is communicated with the liquid storage tank, the other end of the infusion tube is communicated with the liquid injection machine, the liquid storage tank is used for storing electrolyte, the infusion tube is used for conveying the electrolyte, and the liquid injection machine is used for injecting the electrolyte into the battery cell; the heating member cover is located the outside of transfer line, the heating member be used for to the transfer line heat transfer, in order to heat electrolyte in the transfer line. According to the electrolyte heating device, the liquid conveying pipe is used for conveying the electrolyte in the liquid storage tank to the liquid injection machine, the heating element is used for heating the electrolyte flowing in the liquid conveying pipe, so that the temperature of the electrolyte in the liquid conveying pipe is maintained at the preset temperature, the electrolyte has good fluidity, the conveying efficiency of the electrolyte is favorably improved, and meanwhile, the infiltration effect of the electrolyte on the electrode plates and the diaphragms in the battery core is favorably improved.
Description
Technical Field
The utility model relates to the technical field of battery preparation, in particular to an electrolyte heating device.
Background
The lithium ion battery is widely applied as a high-efficiency environment-friendly new energy, and in the manufacturing process of the lithium ion battery, when the infiltration effect of electrolyte is poor, the white strip phenomenon can occur on the diaphragm inside the battery cell, and the pole piece which is not contacted with the electrolyte can not participate in the electrochemical reaction, so that the problems of black spots, lithium precipitation and the like can occur, thereby reducing the electrochemical performance of the battery.
In the production process of the existing battery, the electrolyte is usually stored in a liquid storage tank, the temperature of the electrolyte is the same as the temperature of the external environment, and in the liquid injection stage, the electrolyte in the liquid storage tank is conveyed to a liquid injection machine through a pipeline for liquid injection. The temperature of the electrolyte is greatly influenced by the external environment temperature, when the external environment temperature is low, the conveying efficiency of the electrolyte is low, and the infiltration effect of the electrolyte to the electrode plate and the diaphragm in the battery cell after liquid injection is poor. In the prior art, the electrolyte is heated by using heat conduction oil, but the heat conduction oil has more impurities and is easy to pollute the workshop environment.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electrolyte heating device, which is used for solving the problems that the existing electrolyte is influenced by the external environment temperature in the conveying process, the mobility is poor, and the infiltration effect on a pole piece and a diaphragm in a core is poor.
The utility model provides an electrolyte heating device, comprising: a liquid delivery tube and a heating element;
one end of the infusion tube is communicated with the liquid storage tank, the other end of the infusion tube is communicated with the liquid injection machine, the liquid storage tank is used for storing electrolyte, the infusion tube is used for conveying the electrolyte, and the liquid injection machine is used for injecting the electrolyte into the battery cell;
the heating member cover is located the outside of transfer line, the heating member be used for to the transfer line heat transfer to the heating electrolyte in the transfer line.
According to the electrolyte heating device provided by the utility model, the heating element comprises a sleeve and a resistance wire;
the utility model discloses a transfusion device, including infusion tube, sheathed tube, resistance wire, casing cover is located the outside of infusion tube, sheathed tube inner wall with the outer wall of infusion tube is laminated mutually, the resistance wire is located sheathed tube outer wall, the resistance wire is used for being connected with the power.
According to the electrolyte heating device provided by the utility model, the sleeve is a copper pipe, an aluminum pipe or a copper-aluminum composite pipe.
According to the electrolyte heating device provided by the utility model, the wall thickness of the sleeve is 2-3 times of that of the infusion tube.
According to the electrolyte heating device provided by the utility model, the resistance wire is spirally wound on the outer wall of the sleeve.
According to the electrolyte heating device provided by the utility model, the resistance wire comprises a plurality of resistance wire units, and the resistance wire units are arranged on the outer wall of the sleeve at intervals.
According to the electrolyte heating device provided by the utility model, the electrolyte heating device further comprises a controller;
the controller is connected with the resistance wire units and is used for controlling any one of the resistance wire units to be powered on or powered off.
According to the electrolyte heating device provided by the utility model, the electrolyte heating device further comprises heat-insulating cotton, and the heat-insulating cotton is wrapped on the sleeve between every two adjacent resistance wire units.
According to the electrolyte heating device provided by the utility model, the infusion tube is made of a plastic hose.
According to the electrolyte heating device provided by the utility model, the electrolyte heating device further comprises a temperature sensor, and the temperature sensor is used for detecting the temperature of the electrolyte in the infusion tube.
According to the electrolyte heating device provided by the utility model, the liquid conveying pipe is used for conveying the electrolyte in the liquid storage tank to the liquid injection machine, and the heating element is used for heating the electrolyte flowing in the liquid conveying pipe, so that the temperature of the electrolyte in the liquid conveying pipe is maintained at the preset temperature, the electrolyte has good fluidity, the conveying efficiency of the electrolyte is favorably improved, and meanwhile, the infiltration effect of the electrolyte on the electrode piece and the diaphragm in the battery core is favorably improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of an electrolyte heating apparatus provided by the present invention;
reference numerals: 1: a transfusion tube; 2: a sleeve; 3: resistance wire.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An electrolyte heating apparatus according to an embodiment of the present invention will be described with reference to fig. 1.
As shown in fig. 1, an electrolyte heating apparatus provided in an embodiment of the present invention includes: a transfusion tube 1 and a heating element; one end of the infusion tube 1 is communicated with a liquid storage tank, the other end of the infusion tube 1 is communicated with a liquid injection machine, the liquid storage tank is used for storing electrolyte, the infusion tube 1 is used for conveying the electrolyte, and the liquid injection machine is used for injecting the electrolyte into the battery core; the heating member cover is located the outside of transfer line 1, and the heating member is used for transmitting the heat to transfer line 1 to the electrolyte in the heating transfer line 1.
Specifically, electrolyte is usually stored in the liquid storage tank before using, and the temperature of electrolyte in the liquid storage tank is close to external environment temperature, and electrolyte in the liquid storage tank receives external environment temperature's influence, and when ambient temperature was higher, electrolyte was in high temperature, and when ambient temperature was lower, electrolyte was in the low temperature. When the temperature of the electrolyte is low, for example, the temperature of the electrolyte is lower than 20 degrees, the viscosity of the electrolyte is increased, the fluidity is deteriorated, the conveying efficiency and the liquid injection efficiency are affected, and the infiltration effect of the electrolyte, the pole piece and the diaphragm is affected.
Electrolyte in the liquid storage tank passes through transfer line 1 and carries to annotating the liquid machine, it is inside further to pour into electric core with electrolyte into through annotating the liquid machine, accomplish and annotate the liquid operation, it preheats to the interior mobile electrolyte of transfer line 1 through the heating member before annotating the liquid, make the temperature of electrolyte in the transfer line 1 can maintain between 20 ~ 30 of presetting the temperature, it is the same with annotating the liquid temperature to preset the temperature, the temperature of electrolyte is between 20 ~ 30, the mobility preferred of electrolyte, electrolyte can smoothly flow in transfer line 1, the infiltration effect of preferred can be obtained to electrolyte and pole piece and diaphragm simultaneously.
The heating member cover is located the outside of transfer line 1, and the heating member does not do specific restriction, and for example the heating member can be the companion tropical, and the companion tropical twines on the outer wall of transfer line 1, and when electrolyte flowed in transfer line 1, the companion tropical was in the heating state, and the heat transfer of companion tropical is to in the transfer line 1 for the temperature of electrolyte in transfer line 1 reaches preset temperature. Or the outside of the infusion tube 1 is sleeved with a hollow tube, one end of the hollow tube is provided with a water inlet, the other end of the hollow tube is provided with a water outlet, and hot water is injected into the hollow tube, so that the heat of the hot water is transferred to the infusion tube 1 to heat the electrolyte in the infusion tube 1; or one end of the hollow tube is provided with an air inlet, the other end of the hollow tube is provided with an air outlet, and the heat of the hot air is conducted to the infusion tube 1 by filling the hot air into the hollow tube so as to heat the electrolyte in the infusion tube 1. Or the heating element is a resistance wire, the resistance wire is electrified to generate heat, and the heat of the resistance wire is conducted to the infusion tube 1 so as to heat the electrolyte in the infusion tube 1.
When needing to annotate the liquid operation, electrolyte flows to the other end of transfer line 1 by the one end of transfer line 1, under the lower condition of ambient temperature, the heating member starts, the heat conduction of heating member gives transfer line 1, can heat the electrolyte in the transfer line 1 from this, make the temperature of electrolyte maintain predetermineeing the temperature, the electrolyte viscosity after the heating reduces, the mobility increase, be favorable to electrolyte smoothly flowing in transfer line 1, be favorable to shortening the notes liquid time in the notes liquid stage simultaneously, promote the infiltration effect of electrolyte to electrode piece and diaphragm in the electric core.
In the embodiment of the utility model, the liquid conveying pipe 1 is used for conveying the electrolyte in the liquid storage tank to the liquid injection machine, and the heating element is used for heating the electrolyte flowing in the liquid conveying pipe 1, so that the temperature of the electrolyte in the liquid conveying pipe 1 is maintained at a preset temperature, the electrolyte has good fluidity, the conveying time of the electrolyte is favorably shortened, the working efficiency is improved, and the soaking effect of the electrolyte on the electrode plates and the diaphragms in the battery core is favorably improved.
As shown in fig. 1, in an alternative embodiment, the heating element comprises a sleeve 2 and a resistance wire 3; the outside of transfer line 1 is located to sleeve pipe 2 cover, and the inner wall of sleeve pipe 2 laminates with the outer wall of transfer line 1 mutually, and sleeve pipe 2's outer wall is located to resistance wire 3, and resistance wire 3 is used for being connected with the power.
Specifically, the infusion tube 1 is usually made of a plastic hose, for example, the infusion tube 1 may be made of polytetrafluoroethylene, the inner diameter, thickness and length of the infusion tube 1 are set according to actual requirements, and the size of the infusion tube 1 is matched with the liquid injection machine. The heating member includes sleeve pipe 2 and resistance wire 3, and 2 internal diameter sizes of sleeve pipe and the external diameter size looks adaptation of transfer line 1, 2 sleeves are located on transfer line 1, and 2 ~ 3 times of 2 wall thickness for the transfer line 1 wall thickness of sleeve pipe 2. The length of the sleeve 2 can be the same as that of the infusion tube 1, namely, the sleeve 2 is arranged along the length direction of the infusion tube 1; alternatively, the cannula 2 may be attached to the infusion tube 1 in segments, i.e., along the length of the infusion tube 1, the cannula 2 is attached to a partial region, and the cannula 2 is not attached to a partial region.
The sleeve 2 can be a copper pipe, an aluminum pipe or a copper-aluminum composite pipe, and the copper pipe, the aluminum pipe or the copper-aluminum composite pipe has good heat conductivity and low cost, and the sleeve 2 is taken as the copper pipe for description. The surface of resistance wire 3 scribbles insulating material, and resistance wire 3 can be nickel chromium heating wire or iron chromium heating wire etc. and resistance wire 3 twines on the outer wall of copper pipe, and the winding form of resistance wire 3 does not do specific restriction, for example 3 spiral windings of resistance wire are on the outer wall of copper pipe. Resistance wire 3 is connected with the power, and the power circular telegram lets in the electric current to resistance wire 3, and resistance wire 3 begins the heating, and the heat transfer of resistance wire 3 is for the copper pipe, transmits for transfer line 1 by the copper pipe again, heats the electrolyte in the transfer line 1 from this for the temperature of electrolyte keeps at preset temperature in transfer line 1.
When the ambient temperature is lower, for example, the ambient temperature is lower than 10 degrees, the power supply can supply a current with a larger value to the resistance wire 3, so that the temperature of the electrolyte in the infusion tube 1 can quickly reach the preset temperature.
In the prior art, the electrolyte is heated through heat conduction oil, but the heat conduction oil easily pollutes the workshop environment. Electrolyte is heated through the constant temperature box, so that the standby electrolyte is in a constant temperature state, but the structure is complex, and the operation cost is high. In this embodiment, copper pipe box locates on transfer line 1, and resistance wire 3 twines on the outer wall of copper pipe, and copper pipe and resistance wire 3 are with low costs, and the electrolyte in the liquid storage tank is the same with external environment temperature, and external environment temperature is the ambient temperature in the workshop that the liquid storage tank was placed promptly. When the electrolyte is in a standby state, the power supply is disconnected from the resistance wire 3, when liquid injection operation is required, the power supply is communicated with the resistance wire 3, and the resistance wire 3 starts to heat, so that the temperature of the electrolyte flowing in the infusion tube 1 is kept at a preset temperature. The liquid injection process is completed, and the power supply is disconnected from the resistance wire 3, so that the waste of electric quantity can be avoided.
In the embodiment of the utility model, the sleeve 2 is sleeved outside the infusion tube 1, the resistance wire 3 is wound on the outer wall of the sleeve 2, when the electrolyte is in a standby state, the resistance wire 3 is in a power-off state, and when the liquid injection operation is required, the resistance wire 3 is heated, so that the temperature of the electrolyte in the infusion tube 1 is kept at a preset temperature, the material cost of a heating element is low, the operation cost is low, and the heat conduction efficiency is high.
In an alternative embodiment, as shown in fig. 1, the resistance wire 3 is helically wound around the outer wall of the sleeve 2.
Specifically, resistance wire 3 is the heliciform and twines on sleeve pipe 2's outer wall, and the heat of resistance wire 3 can transmit for sleeve pipe 2 uniformly for sleeve pipe 2 can the thermally equivalent, further is favorable to the homogeneity that the interior electrolyte of transfer line 1 was heated, is favorable to promoting the mobility of electrolyte and the infiltration effect of electrolyte.
As shown in fig. 1, in an alternative embodiment, the resistance wire 3 includes a plurality of resistance wire units, and the plurality of resistance wire units are arranged at intervals on the outer wall of the sleeve 2.
Specifically, be equipped with a plurality of resistance wire units along the length direction of sleeve pipe 2, a plurality of resistance wire units are arranged at certain distance interval, or a plurality of resistance wire units are closely laid. The power supply comprises a plurality of power supply modules, the power supply modules are connected with the resistance wire units in a one-to-one correspondence mode, and the power-on or power-off of the resistance wire units can be controlled independently.
One of the resistance wire units is damaged, and the heating of the electrolyte in the infusion tube 1 is not influenced. A plurality of resistance wire units are arranged on the sleeve 2 at intervals, heat generated by a single resistance wire unit is transmitted towards the sleeve 2 along the radial direction, and is also transmitted towards the area of the sleeve 2 on two sides of the resistance wire unit along the axial direction, and the resistance wire units are arranged at intervals, so that the cost is saved, the heating uniformity of the sleeve 2 can be met, and the heating uniformity of electrolyte in the infusion tube 1 is facilitated.
The resistance wire units are distributed along the length direction of the sleeve 2, the power-on or power-off states of the resistance wire units can be set according to actual requirements, for example, in a certain time period, the resistance wire units at even number positions are powered on, and the resistance wire units at odd number positions are powered off; in the next time period, the resistance wire units at the even number positions are powered off, and the resistance wire units at the odd number positions are powered on, namely the resistance wire units at the even number positions and the resistance wire units at the odd number positions are powered on in turn, so that the service life of the resistance wire 3 is prolonged.
The working modes of the resistance wire units can also adopt other modes, for example, when the external environment temperature is close to the preset temperature of the electrolyte, the parts in the resistance wire units are in an electrified state to heat the electrolyte in the infusion tube 1. When the difference between the external environment temperature and the preset temperature of the electrolyte is large, the resistance wire units are simultaneously in a power-on state, so that the temperature of the electrolyte in the infusion tube 1 can rapidly reach the preset temperature required by the injection.
In the embodiment of the utility model, the resistance wire units are arranged on the outer wall of the sleeve 2 at intervals, and according to the actual use requirement, parts of the resistance wire units are electrified or simultaneously electrified, so that the service life of the resistance wire 3 is prolonged, and meanwhile, the damage of a single resistance wire unit cannot influence the heating of electrolyte in the infusion tube 1.
In an alternative embodiment, the electrolyte heating apparatus further comprises a controller; the controller is connected with the plurality of resistance wire units and is used for controlling any one of the plurality of resistance wire units to be powered on or powered off.
Specifically, the power includes a plurality of power module, and the controller is connected through a plurality of power module and a plurality of resistance wire unit one-to-one, and any one in a plurality of resistance wire units of controller control is in the on state or outage state, can satisfy multiple user demand, simple operation.
In an optional embodiment, the electrolyte heating device further comprises heat insulation cotton, and the heat insulation cotton is wrapped on the sleeve 2 between two adjacent resistance wire units.
Specifically, a plurality of resistance wire units are arranged at intervals along the length direction of the sleeve 2, and the insulating cotton is wrapped on the section of the sleeve 2 between two adjacent resistance wire units. For example, the heat preservation layer is an asbestos felt, the asbestos felt is wrapped on the sleeve 2 and is fastened through a binding belt, and the installation is convenient and fast.
When a plurality of resistance wire units circular telegram, the heat of resistance wire unit is along the transmission of 2 sections of sleeve pipe at sleeve pipe 2's axis direction orientation not installed resistance wire unit place, and the outside parcel in 2 sections of sleeve pipe that do not install the resistance wire unit has the asbestos felt, can effectively prevent heat conduction to the external environment for inside heat can effectively transmit to transfer line 1, is favorable to the homogeneity that electrolyte was heated in the transfer line 1.
In the embodiment of the utility model, the resistance wire units are arranged at intervals along the length direction of the sleeve 2, and the outer wall of the section of the sleeve 2 between every two adjacent resistance wire units is wrapped with the heat insulation cotton, so that the heat can be effectively prevented from being conducted to the external environment, the uniformity of heating of electrolyte in the infusion tube 1 is facilitated, and the fluidity of the electrolyte is improved.
In an alternative embodiment, the electrolyte heating device further comprises a temperature sensor for detecting the temperature of the electrolyte in the infusion tube 1.
Specifically, the type of the temperature sensor is not specifically limited, the temperature sensor can be a contact type temperature sensor or a non-contact type temperature sensor, when the resistance wire 3 is in a heating state, the temperature sensor detects the temperature of the electrolyte in the infusion tube 1, and when the detected actual temperature is in an abnormal condition, for example, when the actual temperature of the electrolyte is greatly different from the preset temperature, the temperature sensor can prompt an operator to stop liquid injection operation, so that the heating element is overhauled. The temperature of the electrolyte is detected in the process of liquid injection, and the use reliability of the electrolyte heating device is favorably ensured.
In the embodiment of the utility model, the temperature sensor is used for detecting the temperature of the electrolyte in the infusion tube 1, which is beneficial to ensuring the use reliability of the electrolyte heating device.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An electrolyte heating apparatus, comprising: a liquid conveying pipe and a heating element;
one end of the infusion tube is communicated with the liquid storage tank, the other end of the infusion tube is communicated with the liquid injection machine, the liquid storage tank is used for storing electrolyte, the infusion tube is used for conveying the electrolyte, and the liquid injection machine is used for injecting the electrolyte into the battery cell;
the heating member cover is located the outside of transfer line, the heating member be used for to the transfer line heat transfer to the heating electrolyte in the transfer line.
2. The electrolyte heating device according to claim 1, wherein the heating element comprises a sleeve and a resistance wire;
the sleeve is sleeved on the outer side of the infusion tube, the inner wall of the sleeve is attached to the outer wall of the infusion tube, the resistance wire is arranged on the outer wall of the sleeve, and the resistance wire is used for being connected with a power supply.
3. The electrolyte heating device according to claim 2, wherein the sleeve is a copper tube, an aluminum tube, or a copper-aluminum composite tube.
4. The electrolyte heating device according to claim 2, wherein the wall thickness of the sleeve is 2 to 3 times the wall thickness of the infusion tube.
5. The electrolyte heating device of claim 2, wherein the resistance wire is helically wound around the outer wall of the sleeve.
6. The electrolyte heating device of claim 2, wherein the resistance wire comprises a plurality of resistance wire units, and the plurality of resistance wire units are arranged on the outer wall of the sleeve at intervals.
7. The electrolyte heating device of claim 6, further comprising a controller;
the controller is connected with the resistance wire units and is used for controlling any one of the resistance wire units to be powered on or powered off.
8. The electrolyte heating device according to claim 6, further comprising heat insulation cotton wrapped on the sleeve between two adjacent resistance wire units.
9. The electrolyte heating device of claim 1, wherein the fluid delivery tube is made of a plastic hose.
10. The electrolyte heating device of claim 1, further comprising a temperature sensor for detecting the temperature of the electrolyte within the infusion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220260270.6U CN216958231U (en) | 2022-02-07 | 2022-02-07 | Electrolyte heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220260270.6U CN216958231U (en) | 2022-02-07 | 2022-02-07 | Electrolyte heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216958231U true CN216958231U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220260270.6U Active CN216958231U (en) | 2022-02-07 | 2022-02-07 | Electrolyte heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216958231U (en) |
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2022
- 2022-02-07 CN CN202220260270.6U patent/CN216958231U/en active Active
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