CN210730017U - Battery slurry consistency lifting device for coating - Google Patents
Battery slurry consistency lifting device for coating Download PDFInfo
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- CN210730017U CN210730017U CN201921085644.XU CN201921085644U CN210730017U CN 210730017 U CN210730017 U CN 210730017U CN 201921085644 U CN201921085644 U CN 201921085644U CN 210730017 U CN210730017 U CN 210730017U
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Abstract
The utility model provides a coating is with battery thick liquids uniformity lifting device, wherein, thick liquids initiative pump mechanism, thick liquids buffer memory mechanism, coating machine thick liquids inlet pipe, thick liquids backward flow coupling mechanism connect gradually, thick liquids backward flow coupling mechanism connects thick liquids buffer memory mechanism; the slurry constant temperature mechanism is used for keeping the slurry in the slurry caching mechanism at a constant temperature, the temperature measuring mechanism is used for carrying out temperature detection on the slurry in the slurry caching mechanism, the viscosity measuring mechanism is used for carrying out viscosity detection on the slurry in the slurry caching mechanism, and the surface density measuring mechanism is used for detecting the coating surface density. The utility model discloses thereby can regulate and control the temperature and the viscosity of thick liquids and regulate and control coating surface density, effectively improve coating surface density uniformity, reduce the cost output that artifical regulation and control surface density in-process brought.
Description
Technical Field
The utility model relates to a power battery production facility technical field, concretely relates to battery thick liquids uniformity hoisting device for coating.
Background
The lithium ion battery, as a representative of the current new energy, has the characteristics of high discharge efficiency, high energy density, small self-discharge and high capacity retention rate, and has been widely applied in various fields. In the production process of the battery core, the consistency of the density of the coating surface of the battery core is a problem existing in the lithium battery industry and cannot be eliminated fundamentally, and the only method can continuously regulate and control the surface density of a single surface and a double surface in an iterative calculation mode only by improving the consistency of slurry and then performing closed-loop control, so that the numerical covariance (cov) of the transverse and longitudinal surface densities of the single surface is less than 0.3%, and the numerical value cov of the transverse and longitudinal surface densities of the double surface is less than 0.3%. Through the device for keeping the slurry at constant temperature and viscosity, the standard deviation of the surface density and the cov numerical value can be greatly improved, so that the weight of the battery cell is stable, the injection amount of the electrolyte is constant, the standard deviation of the discharge capacity of the battery cell is reduced, the internal resistance of the battery cell is reduced, and the standard deviation of the voltage of the battery cell is reduced. Meanwhile, the cost output caused in the process of manually regulating and controlling the surface density can be greatly reduced, and the huge loss caused by substandard battery cell weight, liquid injection amount and the like can be greatly reduced.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a battery thick liquids uniformity hoisting device for coating to thereby the temperature of automatic regulation and control thick liquids and the uniformity that viscosity improved thick liquids reduce the cost output that artifical regulation and control surface density in-process brought.
The utility model provides a pair of battery thick liquids uniformity hoisting device for coating, include: the device comprises a slurry active pumping mechanism, a slurry caching mechanism, a slurry constant temperature mechanism, a coating machine slurry feeding pipe for feeding to a coating machine, a slurry backflow connecting mechanism, a temperature measuring mechanism, a viscosity measuring mechanism and a surface density measuring mechanism;
the slurry active pumping mechanism, the slurry caching mechanism, the slurry feeding pipe of the coating machine and the slurry backflow connecting mechanism are sequentially connected, and the slurry backflow connecting mechanism is connected with the slurry caching mechanism;
the slurry constant temperature mechanism is used for keeping the slurry in the slurry caching mechanism at a constant temperature, the temperature measuring mechanism is used for carrying out temperature detection on the slurry in the slurry caching mechanism, the viscosity measuring mechanism is used for carrying out viscosity detection on the slurry in the slurry caching mechanism, and the surface density measuring mechanism is used for detecting the coating surface density.
Preferably, the slurry feeding pipe of the coating machine is provided with a coating valve for controlling the feeding of the coating machine.
Preferably, the slurry caching mechanism comprises a slurry caching container, a slurry feeding pipe and a slurry discharging pipe, the slurry caching container is communicated with the slurry active pumping mechanism through the slurry feeding pipe, the slurry caching container is communicated with the slurry feeding pipe of the coating machine through the slurry discharging pipe, and a slurry discharging valve is arranged on the slurry discharging pipe.
Preferably, thick liquids backward flow coupling mechanism includes backflow heating pipe and backward flow inlet pipe, and backflow heating pipe is equipped with thick liquids backward flow valve through backward flow inlet pipe and the intercommunication of coating machine thick liquids feeding main pipe, backflow heating pipe and thick liquids buffer container intercommunication on the backward flow inlet pipe.
Preferably, the slurry constant temperature mechanism comprises a constant temperature water bath box, and the slurry buffer container is arranged in the constant temperature water bath box.
Preferably, the reflux heating pipe is arranged in the constant temperature water bath tank.
Preferably, the temperature measuring mechanism comprises a temperature measuring probe which is arranged in the slurry cache container, and the viscosity measuring mechanism comprises a viscosity measuring probe which is arranged in the slurry cache container.
Preferably, a stirring component is arranged in the slurry buffer container.
Preferably, the slurry constant temperature device further comprises a PLC control mechanism, wherein the surface density measuring mechanism, the temperature measuring mechanism and the viscosity measuring mechanism are respectively in signal connection with the PLC control mechanism, and the PLC control mechanism is in control connection with the slurry constant temperature mechanism.
The utility model provides a pair of battery thick liquids uniformity hoisting device for coating has following beneficial effect:
(1) thereby regulate and control coating surface density through setting up thick liquids constant temperature mechanism, temperature measurement mechanism, viscosity measurement mechanism and dough density measurement mechanism to the temperature and the viscosity of thick liquids, only need once artificially intervene and control coating surface density, after coating surface density covariance reaches the anticipated ideal value, the temperature and the viscosity of thick liquids are improved in regulation and control of accessible thick liquids constant temperature mechanism, and regulation and control is more accurate moreover, effectively improves the coating uniformity.
(2) Over set up thick liquids initiative pump and give mechanism, thick liquids buffer memory mechanism, coating machine thick liquids inlet pipe, thick liquids backward flow coupling mechanism connects gradually, thick liquids backward flow coupling mechanism connects thick liquids buffer memory mechanism and connects, form the circulation circuit of thick liquids, can effectively improve the different stability of throwing between the material batch of thick liquids, reduce the scrap that the regulation and control caused during follow-up thick liquids unstability, very big improvement is scribbled the horizontal of surface density, vertical covariance, also improved follow-up electric core weight simultaneously, annotate the liquid volume, electric core internal resistance, voltage, the uniformity of discharge capacity etc. for the product uniformity obtains promoting by a wide margin
Drawings
Fig. 1 is a schematic structural diagram of a device for improving consistency of battery slurry for coating according to the present invention.
Fig. 2 is a plot of the coating machine direction areal density cov (covariance) trend.
Detailed Description
Referring to fig. 1, the utility model provides a coating is with battery thick liquids uniformity hoisting device, include: the slurry automatic feeding device comprises a slurry active pumping mechanism 1, a slurry caching mechanism, a slurry constant temperature mechanism, a coating machine slurry feeding pipe 6 for feeding to a coating machine, a slurry backflow connecting mechanism, a temperature measuring mechanism, a viscosity measuring mechanism and a surface density measuring mechanism;
the slurry active pumping mechanism 1, the slurry caching mechanism, the slurry feeding pipe 6 of the coating machine and the slurry backflow connecting mechanism are sequentially connected, and the slurry backflow connecting mechanism is connected with the slurry caching mechanism;
the slurry constant temperature mechanism is used for keeping the slurry in the slurry caching mechanism at a constant temperature, the temperature measuring mechanism is used for carrying out temperature detection on the slurry in the slurry caching mechanism, the viscosity measuring mechanism is used for carrying out viscosity detection on the slurry in the slurry caching mechanism, and the surface density measuring mechanism is used for detecting the coating surface density.
The utility model discloses a set up thick liquids initiative pump and give mechanism 1, thick liquids buffer memory mechanism, coating machine thick liquids inlet pipe 6, thick liquids backward flow coupling mechanism connects gradually, thick liquids backward flow coupling mechanism connects thick liquids buffer memory mechanism and connects, form the circulation circuit of thick liquids, can effectively improve the stability between the thick liquids different batch of throwing, reduce the scrapping that the regulation and control caused during follow-up thick liquids unstable, the horizontal of very big improvement coating surface density, vertical covariance, the uniformity of follow-up electric core weight, notes liquid volume, electric core internal resistance, voltage, discharge capacity etc. has also been improved simultaneously, make the product uniformity promote by a wide margin; secondly, the coating surface density is regulated and controlled by regulating and controlling the temperature and the viscosity of the slurry through the slurry constant temperature mechanism, the temperature measuring mechanism, the viscosity measuring mechanism and the surface density measuring mechanism, the coating surface density is regulated and controlled only through one-time manual intervention, and after the coating surface density covariance reaches an expected ideal value, the temperature and the viscosity of the slurry are improved through the slurry constant temperature mechanism, so that the regulation and the control are more accurate, and the coating consistency is effectively improved.
In the present embodiment, the coater slurry feed pipe 6 is provided with a coating valve 7 for controlling the feeding of the coater. By opening or coating the valve 7, the slurry can be controlled for coating by the coater or entering the reflux connection mechanism.
In this embodiment, the slurry caching mechanism comprises a slurry caching container 2, a slurry feeding pipe 3 and a slurry discharging pipe 4, the slurry caching container 2 is communicated with the slurry active pumping mechanism 1 through the slurry feeding pipe 3, the slurry caching container 2 is communicated with a slurry feeding pipe 6 of the coating machine through the slurry discharging pipe 4, and a slurry discharging valve 5 is arranged on the slurry discharging pipe 4. The slurry active pumping mechanism 1 feeds slurry into the slurry cache container 2 through the slurry feeding pipe 3, the slurry in the slurry cache container 2 flows into the slurry feeding pipe 6 of the coating machine through the slurry discharging pipe 4, and the slurry discharging valve 5 controls whether the slurry in the slurry cache container 2 flows into the slurry feeding pipe 6 of the coating machine.
In this embodiment, the slurry backflow connecting mechanism includes a backflow heating pipe 10 and a backflow inlet pipe 8, the backflow heating pipe 10 is communicated with the slurry feeding main pipe 6 of the coating machine through the backflow inlet pipe 8, a slurry backflow valve 9 is arranged on the backflow inlet pipe 8, and the backflow heating pipe 10 is communicated with the slurry cache container 2. Whether the slurry enters the slurry buffer container 2 through the reflux heating pipe 10 is controlled by controlling the opening and closing of the slurry reflux valve 9.
In this embodiment, the slurry constant temperature mechanism includes a constant temperature water bath 11, and the slurry buffer container 2 is disposed in the constant temperature water bath 11 so as to heat and preserve heat of the slurry buffer container 2.
In a further embodiment, the backflow heating pipe 10 is arranged in the constant temperature water bath 11, so that the slurry entering the slurry buffer container 2 through the backflow heating pipe 10 is preheated in advance, the temperature of the mixed slurry is more uniform, and the consistency of the slurry is improved.
In the embodiment, the temperature measuring mechanism comprises a temperature measuring probe which is arranged in the slurry buffer container 2 to detect the temperature of the slurry, the viscosity measuring mechanism comprises a viscosity measuring probe which is arranged in the slurry buffer container 2 to detect the viscosity of the slurry, and the temperature and the viscosity of the slurry are conveniently regulated and controlled according to the information measured by the temperature measuring mechanism and the viscosity measuring mechanism to improve the consistency of the slurry, so that the consistency of the coating surface density is improved.
In the present embodiment, a stirring component is provided in the slurry buffer container 2 to make the slurry in the slurry buffer container 2 uniformly distributed and improve the consistency of the viscosity.
In the embodiment, the slurry constant temperature device further comprises a PLC control mechanism, wherein the surface density measuring mechanism, the temperature measuring mechanism and the viscosity measuring mechanism are respectively in signal connection with the PLC control mechanism, and the PLC control mechanism is in control connection with the slurry constant temperature mechanism. The PLC control mechanism is prior art. Through the automatic regulation and control of interveneeing of PLC control mechanism, reduce artifical the participation, reduce the cost of labor, regulate and control moreover more accurately, effectively improve the coating uniformity. Specifically, the PLC control mechanism controls and connects the coating valve 7, the slurry discharging valve 5 and the slurry backflow valve 9 respectively, so that the coating valve 7, the slurry discharging valve 5 or the slurry backflow valve 9 can be automatically controlled to be opened and closed, the circulation path of the slurry is controlled, the temperature and the viscosity of the slurry can be conveniently regulated, and the surface density consistency is improved.
When in specific implementation, the method comprises the following steps:
the first step is as follows: manually regulating and controlling the density of the coating surface to ensure that the range of the density of the single surface is withinWithin a certain range (200 +/-2 g/m)2) The surface density numerical covariance of each point of the coating surface density in the transverse direction and the longitudinal direction meets a certain condition (less than 0.8 percent);
the second step is that: starting a temperature measuring mechanism and a viscosity measuring mechanism, and recording the temperature and the viscosity of the slurry when the coating surface density is manually regulated and controlled by a PLC control mechanism so that the coating surface density is within a corresponding curve fluctuation range under the condition that the covariance of transverse numerical values and longitudinal numerical values meets a certain condition (less than 0.8%);
the third step: the PLC control mechanism controls the slurry discharging valve 5 and the coating valve 7 to be closed, the slurry backflow valve 9 to be opened, the constant-temperature water bath box 11 to be opened, the temperature and the viscosity of the slurry reach the temperature range recorded in the second step, meanwhile, the PLC control mechanism records real-time detection values detected by the temperature measuring probe and the viscosity measuring probe, the constant-temperature is adjusted and controlled through iterative calculation in time, and the optimal range (less than 0.3%) that the temperature and the viscosity of the slurry meet covariance adjustment and control is indirectly reached;
the fourth step: after the temperature and viscosity of the slurry are constant, the PLC control mechanism controls to open the slurry discharging valve 5 and the coating valve 7 and close the slurry backflow valve 9, the slurry flows into the coating machine for coating through the slurry discharging pipe 4 and the slurry feeding pipe 6 of the coating machine, the surface density measuring mechanism measures and records the slurry, and the covariance data of the transverse direction and the longitudinal direction is obtained by calculating each group of data of the surface density; then, the PLC control mechanism continuously regulates and controls the constant temperature water bath box 11 to work, so that the standard deviation and the covariance value of the coating transverse and longitudinal surface density tend to be reduced, and the effect of the covariance value (less than 0.3%) under an ideal condition is finally achieved;
the fifth step: the PLC control mechanism controls the constant temperature water bath tank 11 to repeat the third step and the fourth step according to the calculated slurry temperature and viscosity data of the covariance value under the ideal condition, so that the consistency of the coating surface density is continuously improved.
Fig. 2 is a trend graph of cov (covariance) of longitudinal surface density of coating in the using process of the device, as can be seen from the graph, the coating surface density tends to be stable under the intervention adjusting state after the PLC control mechanism controls the slurry constant temperature mechanism to be opened, and the covariance numerical value of the coating surface density is far lower than the covariance numerical value of the coating surface density under the single manual regulation mode under the closing state of the current slurry constant temperature mechanism, so that the effect is better, the coating consistency of the battery cell is improved, the reduction of productivity caused by manual intervention regulation is reduced, the productivity is improved, the benefit of an enterprise is increased, and the cost output and the pollution to the environment are indirectly reduced.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art should be covered within the protection scope of the present invention in the technical scope disclosed by the present invention, according to the technical solution of the present invention and the concept of the present invention, equivalent replacement or change is added.
Claims (9)
1. A coating battery paste consistency improving device is characterized by comprising: the device comprises a slurry active pumping mechanism (1), a slurry caching mechanism, a slurry constant temperature mechanism, a coating machine slurry feeding pipe (6) for feeding to a coating machine, a slurry backflow connecting mechanism, a temperature measuring mechanism, a viscosity measuring mechanism and a surface density measuring mechanism;
the slurry active pumping mechanism (1), the slurry caching mechanism, the slurry feeding pipe (6) of the coating machine and the slurry backflow connecting mechanism are sequentially connected, and the slurry backflow connecting mechanism is connected with the slurry caching mechanism;
the slurry constant temperature mechanism is used for keeping the slurry in the slurry caching mechanism at a constant temperature, the temperature measuring mechanism is used for carrying out temperature detection on the slurry in the slurry caching mechanism, the viscosity measuring mechanism is used for carrying out viscosity detection on the slurry in the slurry caching mechanism, and the surface density measuring mechanism is used for detecting the coating surface density.
2. The coating battery slurry uniformity improving device according to claim 1, wherein the coater slurry feeding pipe (6) is provided with a coating valve (7) for controlling the feeding of the coater.
3. The coating battery slurry consistency improving device according to claim 2, wherein the slurry cache mechanism comprises a slurry cache container (2), a slurry feeding pipe (3) and a slurry discharging pipe (4), the slurry cache container (2) is communicated with the slurry active pumping mechanism (1) through the slurry feeding pipe (3), the slurry cache container (2) is communicated with the coating machine slurry feeding pipe (6) through the slurry discharging pipe (4), and a slurry discharging valve (5) is arranged on the slurry discharging pipe (4).
4. The coating battery slurry consistency improving device according to claim 3, wherein the slurry backflow connecting mechanism comprises a backflow heating pipe (10) and a backflow feeding pipe (8), the backflow heating pipe (10) is communicated with the coating machine slurry feeding pipe (6) through the backflow feeding pipe (8), a slurry backflow valve (9) is arranged on the backflow feeding pipe (8), and the backflow heating pipe (10) is communicated with the slurry cache container (2).
5. The coating battery paste consistency improving apparatus according to claim 4, wherein the paste thermostatic mechanism comprises a thermostatic water bath (11), and the paste buffer container (2) is disposed in the thermostatic water bath (11).
6. The coating battery paste consistency improving apparatus according to claim 5, characterized in that a back-flow heating pipe (10) is provided inside the constant temperature water bath tank (11).
7. The coating battery slurry consistency improving apparatus according to claim 3, wherein the temperature measuring mechanism comprises a temperature measuring probe, the temperature measuring probe is disposed in the slurry buffer container (2), and the viscosity measuring mechanism comprises a viscosity measuring probe, the viscosity measuring probe is disposed in the slurry buffer container (2).
8. The coating battery paste consistency improving apparatus according to claim 3, wherein a stirring component is provided in the paste buffer container (2).
9. The coating battery slurry uniformity improving device according to any one of claims 1 to 8, further comprising a PLC control mechanism, wherein the surface density measuring mechanism, the temperature measuring mechanism and the viscosity measuring mechanism are respectively in signal connection with the PLC control mechanism, and the PLC control mechanism is in control connection with the slurry constant temperature mechanism.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921085644.XU CN210730017U (en) | 2019-07-11 | 2019-07-11 | Battery slurry consistency lifting device for coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921085644.XU CN210730017U (en) | 2019-07-11 | 2019-07-11 | Battery slurry consistency lifting device for coating |
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| CN210730017U true CN210730017U (en) | 2020-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430572A (en) * | 2022-07-26 | 2022-12-06 | 深圳市曼恩斯特科技股份有限公司 | Feeding system and coating production line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430572A (en) * | 2022-07-26 | 2022-12-06 | 深圳市曼恩斯特科技股份有限公司 | Feeding system and coating production line |
| CN115430572B (en) * | 2022-07-26 | 2024-02-13 | 深圳市曼恩斯特科技股份有限公司 | Feeding system and coating production line |
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