CN114160025A - Slurry temperature control device for lithium ion battery stirrer - Google Patents
Slurry temperature control device for lithium ion battery stirrer Download PDFInfo
- Publication number
- CN114160025A CN114160025A CN202111417344.9A CN202111417344A CN114160025A CN 114160025 A CN114160025 A CN 114160025A CN 202111417344 A CN202111417344 A CN 202111417344A CN 114160025 A CN114160025 A CN 114160025A
- Authority
- CN
- China
- Prior art keywords
- slurry
- heat
- water tank
- lithium ion
- ion battery
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a slurry temperature control device for a lithium ion battery stirrer, which belongs to the technical field of lithium batteries and comprises an air-cooled direct-expansion air conditioning unit, a brazing plate type heat exchanger, a heat preservation buffer water tank and slurry barrels of positive and negative electrodes of the lithium ion battery stirrer, wherein the air-cooled direct-expansion air conditioning unit is provided with a heat source interface and a cold source interface, the brazing plate type heat exchanger is provided with a heat source transfer port and a cold source transfer port, the heat source interface is connected to the heat source transfer port, the cold source interface is connected to the cold source transfer port, a temperature sensor is arranged in the heat preservation buffer water tank, an external water pipeline pump is arranged between the brazing plate type heat exchanger and the heat preservation buffer water tank, an internal circulating water pipeline pump is arranged between the heat preservation buffer water tank and the slurry barrels of the positive and negative electrodes of the lithium ion battery stirrer, and electromagnetic valves and controllers are arranged on the external water pipeline pump and the internal water pipeline pump. The invention adjusts the temperature of the slurry in the slurry barrel of the positive and negative electrode stirring machine by circulating water in the heat-insulation buffer water tank, so that the temperature of the slurry is always kept within the process temperature range.
Description
Technical Field
The invention belongs to the technical field of lithium batteries, and particularly relates to a slurry temperature control device for a lithium ion battery stirrer.
Background
The lithium ion battery electrode slurry is the beginning of the battery and is also the most important production process link. The electrode slurry is composed of a plurality of raw materials with different specific gravities and different particle sizes, and is formed by mixing and dispersing solid and liquid phases, and belongs to non-Newtonian fluid. The lithium ion battery slurry can be divided into two types of anode slurry and cathode slurry, and the properties of the slurry are different due to different systems (oil property and water property).
The main parameters for judging the stability of the slurry are as follows: viscosity, particle size, solid content, density, etc. of the slurry. The electrode slurry needs to have stable and proper viscosity, the electrode slurry has a crucial influence on a pole piece coating process, the problem frequently occurring in the production process is that the viscosity of the slurry changes, the pole piece coating is not facilitated due to overhigh or overlow viscosity, the slurry with high viscosity is not easy to precipitate, the dispersibility is good, the overhigh viscosity is not conducive to the leveling effect, the coating is not facilitated, and local cracks and even breakage of the pole piece are easily caused during subsequent rolling. When the viscosity is low, the problems that although the fluidity of the slurry is good, the drying is difficult, the drying efficiency of coating is reduced, the coating cracks and the consistency of the agglomerated surface density of the slurry is not good can be caused when the viscosity is too low.
Factors influencing the viscosity of the slurry mainly include the temperature and humidity of the environment, the speed of stirring the slurry, time control, the batching sequence and the like. Wherein the viscosity of the slurry is greatly influenced by the ambient temperature.
The original process measures are as follows: the temperature of the slurry in the barrel exceeds 50 ℃ in the high-speed dispersion process of the stirrer, and cooling treatment is needed. The temperature of the slurry in the slurry barrel of the positive and negative electrode stirring machine is directly reduced by utilizing the refrigeration circulating water (the water temperature is 6-10 ℃) of a heating ventilation air conditioner. The disadvantages are as follows: the freezing temperature is too low and temperature variation is big, and is unstable, and need control freezing circulating water flow through artifical governing valve size, causes the interior thick liquids temperature fluctuation of mixer thick liquids bucket very big, and the viscosity of direct influence thick liquids reduces the uniformity of production efficiency and battery.
Disclosure of Invention
The invention aims to: the slurry temperature control device for the lithium ion battery stirrer is provided for solving the problems of large viscosity change and instability of slurry caused by the uncontrollable temperature phenomenon in the production process of the conventional lithium ion battery electrode slurry.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a be used for lithium ion battery mixer thick liquids temperature control device, includes that air-cooled expands formula air conditioning unit, brazing plate heat exchanger and heat preservation buffer water tank and positive negative pole mixer thick liquids bucket directly, be provided with heat source interface and cold source interface on the air-cooled expands formula air conditioning unit, be provided with heat source transmission mouth and cold source transmission mouth on the brazing plate heat exchanger, heat source interface connection is in on the heat source transmission mouth, cold source interface connection is in on the cold source transmission mouth, be provided with temperature sensor in the heat preservation buffer water tank, brazing plate heat exchanger with be provided with outer water pipeline pump between the heat preservation buffer water tank, heat preservation buffer water tank with be provided with the internal circulation water pipeline pump between the positive negative pole mixer thick liquids bucket, outer water pipeline pump with all be provided with solenoid valve and controller on the internal circulation water pipeline pump.
As a further description of the above technical solution:
the outer water pipeline pump comprises a first outer water pipeline pump and a second outer water pipeline pump, the first outer water pipeline pump is connected with the cold source transfer port, and the second outer water pipeline pump is connected with the heat source transfer port.
As a further description of the above technical solution:
the positive and negative electrode mixer slurry barrel comprises a positive electrode mixer slurry barrel and a negative electrode mixer slurry barrel, and the internal circulation water pipeline pump is respectively connected with the positive electrode mixer slurry barrel and the negative electrode mixer slurry barrel.
As a further description of the above technical solution:
the heat preservation buffer water tank is also provided with a water inlet pipe, and the water inlet pipe is provided with a water inlet valve.
As a further description of the above technical solution:
the heat preservation buffer water tank is also provided with a heat preservation sleeve and a heat preservation cover.
As a further description of the above technical solution:
the bottom of the heat preservation buffer water tank is also provided with a trapezoidal supporting leg.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
in the invention, an air-cooled direct-expansion air conditioning unit (cold and heat source) is connected with a brazing plate heat exchanger through a copper pipe (acts on an evaporator for heat exchange), the load end of the brazing plate heat exchanger is connected with a heat preservation buffer water tank through an external circulating water pipeline pump to perform heat exchange work of a refrigerant and circulating water, the temperature of water in the heat preservation buffer water tank can be controlled within 23 +/-2 ℃, the start and stop of the air-cooled direct-expansion air conditioning unit and the pipeline pump are controlled by signals of a temperature sensor in the water tank, the internal circulating water pipeline pump is connected with the heat preservation buffer water tank and a positive and negative stirring slurry barrel, slurry in the positive and negative stirring slurry barrel is cooled through water circulation, the temperature of the slurry in the positive and negative stirring slurry barrel can be controlled within 23 +/-2 ℃, compared with the prior art, the temperature control device is constant within a process range value, the stability of the viscosity of the slurry is ensured, and the influence on the coating of a subsequent pole piece is reduced, the coating production efficiency, the qualification rate and the product quality of the pole piece are improved, and the working time cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a working principle diagram of a slurry temperature control device for a lithium ion battery mixer.
Illustration of the drawings:
1-air-cooled direct expansion type air conditioning unit; 2-brazed plate heat exchangers; 3-a heat preservation buffer water tank; 4-positive and negative electrode stirring slurry barrel; 41-positive electrode stirring slurry barrel; 42-negative stirring slurry barrel; 5-heat source interface; 6-cold source interface; 7-a heat source transfer port; 8-cold source transfer port; 9-external water pipe pump; 91-a first external water pipe pump; 92-a second external water pipe pump line; 10-internal circulating water pipeline pump; 11-a water inlet pipe; 12-a water inlet valve; 13-heat preservation cover; 14-ladder-shaped support legs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally 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.
Referring to fig. 1, the present invention provides a technical solution: a slurry temperature control device for a lithium ion battery mixer comprises an air-cooled direct expansion type air conditioning unit 1, a brazing plate type heat exchanger 2, a heat preservation buffer water tank 3 and a slurry barrel 4 of a positive and negative mixer, the air-cooled direct-expansion air conditioning unit 1 is provided with a heat source interface 5 and a cold source interface 6, the brazed plate heat exchanger 2 is provided with a heat source transfer port 7 and a cold source transfer port 8, the heat source interface 5 is connected with the heat source transfer port 7, the cold source interface 6 is connected with the cold source transfer port 8, a temperature sensor is arranged in the heat-preservation buffer water tank 3, an external water pipeline pump 9 is arranged between the brazing plate type heat exchanger 2 and the heat-preservation buffer water tank 3, an internal circulating water pipeline pump 10 is arranged between the heat preservation buffer water tank 3 and the slurry barrel 4 of the positive and negative electrode stirring machines, the external water pipeline pump 9 and the internal circulating water pipeline pump 10 are both provided with electromagnetic valves and controllers. Through set up solenoid valve and controller on outer water pipe pump and interior circulating water pipe pump, wherein be provided with temperature sensor in the heat preservation buffer memory water tank, through temperature sensor transmission signal to controller, opening of controller control solenoid valve, come to control the temperature degree in the heat preservation buffer memory water tank, temperature as temperature sensor reaches the regulation temperature, temperature sensor gives the controller on the interior circulating water pipe pump with the temperature transfer, the solenoid valve is opened to the controller, with homothermal water transfer to positive negative pole mixer thick liquids bucket in, thereby avoid the temperature phase difference too big, guarantee the stability of thick liquids viscosity, reduce the coating influence to follow-up pole piece.
The external water pipeline pump 9 comprises a first external water pipeline pump 91 and a second external water pipeline pump 92, the first external water pipeline pump 91 is connected to the cold source transfer port 8, and the second external water pipeline pump is connected to the heat source transfer port 7. The air-cooled direct-expansion air conditioning unit (cold and heat source) is connected with the brazing plate type heat exchanger (acting on the evaporator for heat exchange) through a copper pipe, and the load end of the brazing plate type heat exchanger is connected with the heat preservation cache water tank through an external circulating water pipeline pump.
Positive negative pole mixer thick liquids bucket 4 includes anodal mixer thick liquids bucket 41 and negative pole mixer thick liquids bucket 42, internal circulation water pipeline pump 10 is connected respectively anodal mixer thick liquids bucket 41 with negative pole mixer thick liquids bucket 42. The water in the heat preservation buffer water tank enters the slurry barrels of the positive and negative electrode mixers through the internal circulating water pipeline pump, so that the temperature in the slurry barrels of the positive and negative electrode mixers is constant, and the stability of the viscosity of the slurry is ensured.
The heat preservation buffer water tank 3 is also provided with a water inlet pipe 11, and the water inlet pipe 11 is provided with a water inlet valve 12. When the water in the heat-preservation cache water tank is used up, the water can be added into the heat-preservation cache water tank by opening the water inlet valve.
The bottom of the connecting body 7 is provided with a trapezoidal support plate 13 with a narrow upper part and a wide lower part, and the trapezoidal support plate 13 is connected on the base 1. And the heat-preservation cache water tank 3 is also provided with a heat-preservation sleeve and a heat-preservation cover 13. The heat preservation effect of the heat preservation buffer water tank is ensured.
The bottom of the heat preservation buffer water tank 3 is also provided with a trapezoidal supporting leg 14. The stability of the heat preservation buffer water tank is ensured.
The working principle is as follows: an air-cooled direct-expansion air conditioning unit (cold and heat source) is connected with a brazed plate heat exchanger through a copper pipe (acting on an evaporator for heat exchange), the load end of the brazed plate heat exchanger is connected with a heat preservation cache water tank through an external circulating water pipeline pump to perform heat exchange work of a refrigerant and circulating water, the water temperature in the heat preservation cache water tank can be controlled to be 23 +/-2 ℃, the start and stop of the air-cooled direct-expansion air conditioning unit and a pipeline pump are controlled by signals of a temperature sensor in the water tank, the internal circulating water pipeline pump is connected with the heat preservation cache water tank and positive and negative stirring slurry barrels, slurry in the positive and negative stirring slurry barrels is cooled through water circulation, the temperature of the slurry in the positive and negative stirring slurry barrels can be controlled to be 23 +/-2 ℃, compared with the prior art, the temperature control device is constant in a process range value, the stability of the slurry viscosity is ensured, the influence on the subsequent pole piece coating is reduced, and the production efficiency of pole piece coating is improved, The qualification rate and the product quality reduce the working hour cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a be used for lithium ion battery mixer thick liquids temperature control device, a serial communication port, including air-cooled direct expansion air conditioning unit (1), brazed plate heat exchanger (2) and heat preservation buffer water tank (3) and positive negative pole mixer thick liquids bucket (4), be provided with heat source interface (5) and cold source interface (6) on air-cooled direct expansion air conditioning unit (1), be provided with heat source transmission mouth (7) and cold source transmission mouth (8) on brazed plate heat exchanger (2), heat source interface (5) are connected on heat source transmission mouth (7), cold source interface (6) are connected on cold source transmission mouth (8), be provided with temperature sensor in heat preservation buffer water tank (3), brazed plate heat exchanger (2) with be provided with outer water pipe pump (9) between heat preservation buffer water tank (3), heat preservation buffer water tank (3) with be provided with inner loop water pipe between positive negative pole mixer thick liquids bucket (4) The pipeline pump (10), outer water pipeline pump (9) with all be provided with solenoid valve and controller on interior circulating water pipeline pump (10).
2. The slurry temperature control device for a lithium ion battery mixer according to claim 1, wherein the external water pipe pump (9) comprises a first external water pipe pump (91) and a second external water pipe pump (92), the first external water pipe pump (91) is connected to the cold source transfer port (8), and the second external water pipe pump is connected to the heat source transfer port (7).
3. The slurry temperature control device for the lithium ion battery mixer according to claim 2, wherein the positive and negative mixer slurry buckets (4) comprise a positive mixer slurry bucket (41) and a negative mixer slurry bucket (42), and the internal circulating water pipeline pump (10) is respectively connected to the positive mixer slurry bucket (41) and the negative mixer slurry bucket (42).
4. The slurry temperature control device for the lithium ion battery mixer according to claim 1, wherein the heat-preservation buffer water tank (3) is further provided with a water inlet pipe (11), and the water inlet pipe (11) is provided with a water inlet valve (12).
5. The slurry temperature control device for the lithium ion battery mixer according to claim 1, wherein the heat-preservation buffer water tank (3) is further provided with a heat-preservation sleeve and a heat-preservation cover (13).
6. The slurry temperature control device for the lithium ion battery mixer according to claim 1, wherein the bottom of the heat-preservation buffer water tank (3) is further provided with a trapezoid supporting leg (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111417344.9A CN114160025A (en) | 2021-11-25 | 2021-11-25 | Slurry temperature control device for lithium ion battery stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111417344.9A CN114160025A (en) | 2021-11-25 | 2021-11-25 | Slurry temperature control device for lithium ion battery stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114160025A true CN114160025A (en) | 2022-03-11 |
Family
ID=80480795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111417344.9A Pending CN114160025A (en) | 2021-11-25 | 2021-11-25 | Slurry temperature control device for lithium ion battery stirrer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114160025A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2620711A2 (en) * | 2012-01-30 | 2013-07-31 | Mitsubishi Electric Corporation | Heat Source Unit Control System |
| CN203258922U (en) * | 2013-03-29 | 2013-10-30 | 瞿红 | Water-cooled heat pipe energy-saving refrigerating system |
| CN204865030U (en) * | 2015-08-17 | 2015-12-16 | 赵剑芳 | Evaporative concentration ware with waste heat recovery device |
| CN205878437U (en) * | 2016-07-12 | 2017-01-11 | 罗佰特（北京）环境科技有限公司 | A constant temperature constant humidity air conditioner set |
| CN206259464U (en) * | 2016-09-29 | 2017-06-16 | 安徽安凯汽车股份有限公司 | The thermostat of pulp of lithium ion battery |
| CN113634458A (en) * | 2021-07-19 | 2021-11-12 | 中材锂膜有限公司 | Lithium ion battery coating diaphragm preparation system and method |
-
2021
- 2021-11-25 CN CN202111417344.9A patent/CN114160025A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2620711A2 (en) * | 2012-01-30 | 2013-07-31 | Mitsubishi Electric Corporation | Heat Source Unit Control System |
| CN203258922U (en) * | 2013-03-29 | 2013-10-30 | 瞿红 | Water-cooled heat pipe energy-saving refrigerating system |
| CN204865030U (en) * | 2015-08-17 | 2015-12-16 | 赵剑芳 | Evaporative concentration ware with waste heat recovery device |
| CN205878437U (en) * | 2016-07-12 | 2017-01-11 | 罗佰特（北京）环境科技有限公司 | A constant temperature constant humidity air conditioner set |
| CN206259464U (en) * | 2016-09-29 | 2017-06-16 | 安徽安凯汽车股份有限公司 | The thermostat of pulp of lithium ion battery |
| CN113634458A (en) * | 2021-07-19 | 2021-11-12 | 中材锂膜有限公司 | Lithium ion battery coating diaphragm preparation system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112378113B (en) | Semiconductor temperature control device and method | |
| CN112611140A (en) | Temperature control device and method | |
| CN114160025A (en) | Slurry temperature control device for lithium ion battery stirrer | |
| CN218866378U (en) | Temperature control device for recycling cooling liquid | |
| CN107192185A (en) | Hydraulic agitation device and ice machine in Ice Storage Tank | |
| CN111603955A (en) | Solid-liquid material mixing system | |
| CN207035598U (en) | Hydraulic agitation device and ice machine in Ice Storage Tank | |
| CN213611308U (en) | Automatic temperature control system of reation kettle | |
| CN215693890U (en) | Polyether polyol reation kettle temperature regulating device | |
| CN206868165U (en) | It is a kind of to be used to reclaim the acid preparing system again for washing sour water | |
| CN215373661U (en) | Cold water system and spent fuel aftertreatment system suitable for cold area | |
| CN212492439U (en) | Solid-liquid material mixing system | |
| CN211109101U (en) | Receiving tank for refining feed liquid | |
| CN211384960U (en) | Loss-reducing and energy-saving material circulating system | |
| CN211501827U (en) | Pressure regulating device of pressure vessel | |
| CN109647270B (en) | Continuous circulation material melting system | |
| CN206983464U (en) | Magnesium plate platemaking machine refrigeration mechanism | |
| CN220250402U (en) | Raw and auxiliary material feeding temperature control device | |
| CN220624525U (en) | Constant pressure closed-circuit cooling water circulation system | |
| CN207365538U (en) | A kind of freezing exchange system for slurries cooling | |
| CN214427831U (en) | Storage tank temperature control system | |
| CN219955771U (en) | Cooling water adjusting system | |
| CN216006044U (en) | Auxiliary agent adding device and system for electrolytic copper foil production | |
| CN2480994Y (en) | Acid cooler for accumulator | |
| CN220143560U (en) | Silicon nitride particle ball milling equipment with cooling function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |