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CN-122015472-A - Drying device for battery preparation

CN122015472ACN 122015472 ACN122015472 ACN 122015472ACN-122015472-A

Abstract

The invention discloses a drying device for battery preparation, which comprises at least one heat exchange unit, wherein the heat exchange unit comprises a first box body and a second box body, the first box body is positioned above the second box body, a first accommodating cavity is formed in the first box body, a second accommodating cavity is formed in the second box body, a first pipeline and a second pipeline are arranged in the second box body, the upper end of the first pipeline is communicated with the first box body, the lower end of the first pipeline is communicated with the second box body, one end of the second pipeline is communicated with the first box body, the other end of the second pipeline is communicated with the second box body, and the first box body, the second pipeline, the first box body and the first pipeline form a loop. The drying device for battery preparation not only can recover waste heat from hot gas and heat reversely input cold gas, namely, can absorb the waste heat in the gas, store heat and preserve heat, and is used for heating other gases, but also is beneficial to realizing self-circulation and efficient heat exchange of heat storage working media.

Inventors

  • FAN WENGUANG

Assignees

  • 常州长晟创新科技有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (10)

  1. 1. Drying apparatus (100) for battery preparation, comprising at least one heat exchange unit (10), said heat exchange unit (10) comprising: The heat storage device comprises a first box body (11) and a second box body (12), wherein the first box body (11) is positioned above the second box body (12), a first accommodating cavity is formed in the first box body (11), a second accommodating cavity is formed in the second box body (12), and the first accommodating cavity and the second accommodating cavity can be used for accommodating heat storage working media respectively; the first pipeline (13) is positioned between the first box body (11) and the second box body (12), the upper end of the first pipeline (13) is communicated with the first box body (11), the lower end of the first pipeline (13) is communicated with the second box body (12), and the first pipeline (13) is used for heating or cooling gas to be subjected to heat exchange outside; The second pipeline (14), the one end of second pipeline (14) with first box (11) intercommunication, the other end of second pipeline (14) with second box (12) intercommunication, first box (11), second pipeline (14), first box (11) with first pipeline (13) constitution return circuit.
  2. 2. The drying apparatus (100) for battery preparation according to claim 1, wherein the second pipe (14) is located on the same side of the first casing (11) and the second casing (12), the drying apparatus (100) for battery preparation further comprising: The box body (17), the box body (17) is located first box body (11) with the same side of second box body (12), box body (17) simultaneously with first box body (11) with second box body (12) are connected, install the passageway in box body (17), second pipeline (14) are located install the passageway.
  3. 3. The drying apparatus (100) for battery preparation according to claim 1, wherein the first duct (13) has a rectangular or circular cross section.
  4. 4. A drying apparatus (100) for battery preparation according to claim 3, characterized in that, when the cross section is rectangular, the long axis direction of the cross section is parallel to the gas flow direction to be heat exchanged.
  5. 5. The drying apparatus (100) for battery preparation according to claim 1, further comprising: And the heat exchange fins (15) are arranged on the outer surface of the first pipeline (13).
  6. 6. The drying apparatus (100) for battery preparation according to claim 5, wherein the direction of extension of at least a portion of the heat exchange fins (15) is non-parallel to the direction of extension of the first duct (13) and to the direction of flow of the gas to be heat exchanged.
  7. 7. The drying apparatus (100) for battery preparation according to claim 6, wherein the heat exchanging fins (15) are flat-sheet-shaped and are circumferentially wound around and fixed to the outer periphery of the first duct (13), or the heat exchanging fins (15) are reciprocally arranged in a "Z" shape between adjacent two of the first ducts (13).
  8. 8. The drying apparatus (100) for battery preparation according to claim 1, wherein the number of the heat exchanging units (10) is plural and connected in series with each other.
  9. 9. The drying apparatus (100) for battery preparation according to claim 8, wherein a heat insulating layer (16) is provided between the front and rear heat exchanging units (10).
  10. 10. The drying apparatus (100) for battery preparation according to claim 1 or 8, further comprising: And the shell (20) is provided with an accommodating space, and the heat exchange unit (10) is positioned in the accommodating space.

Description

Drying device for battery preparation Technical Field The invention relates to the technical field of batteries, in particular to a drying device for battery preparation. Background In the production process of lithium ion batteries, a vacuum oven is often required to perform a negative pressure baking process to rapidly reduce the water content of the pole piece or the winding core. In the negative pressure baking process, materials can be heated first and then vacuumized, and the vacuum drying method can generate a large amount of high-temperature gas discharge and waste a large amount of waste heat. Meanwhile, if the exhaust gases are directly pumped into the vacuum pump without cooling, the working condition and the service life of the vacuum pump can be greatly influenced. Therefore, an additional cooling device is generally required at the front end of the vacuum pump to prevent the vacuum pump from being damaged by the high-temperature gas. Disclosure of Invention An object of the present invention is to provide a drying device for battery preparation, which at least can solve the problems of complex structure, high cost, etc. of the drying structure in the prior art. In order to achieve the above object, the present invention provides the following technical solutions. The drying device for battery preparation comprises at least one heat exchange unit, a first pipeline, a second pipeline and a first loop, wherein the first box is located above the second box, a first accommodating cavity is formed in the first box, a second accommodating cavity is formed in the second box, the first accommodating cavity and the second accommodating cavity can be used for accommodating heat storage working media respectively, the first pipeline is located between the first box and the second box, the upper end of the first pipeline is communicated with the first box, the lower end of the first pipeline is communicated with the second box, the first pipeline is used for heating or cooling gas to be subjected to heat exchange on the outer side, one end of the second pipeline is communicated with the first box, the other end of the second pipeline is communicated with the second box, and the first pipeline, the second pipeline, the first box and the first pipeline form a loop. Optionally, the second pipeline is located on the same side of the first box body and the second box body, the drying device for battery preparation further comprises a frame body, the frame body is located on the same side of the first box body and the second box body, the frame body is connected with the first box body and the second box body at the same time, an installation channel is formed in the frame body, and the second pipeline is located in the installation channel. Optionally, the cross section of the first pipeline is rectangular or circular. Alternatively, when the cross section is rectangular, the long axis direction of the cross section is parallel to the flow direction of the gas to be heat exchanged. Optionally, the drying device for battery preparation further comprises a heat exchange fin, wherein the heat exchange fin is arranged on the outer surface of the first pipeline. Optionally, the extending direction of at least one part of the heat exchange fins is non-parallel to the extending direction of the first pipeline and is parallel to the flow direction of the gas to be heat exchanged. Optionally, the heat exchange fins are flat and encircle and are fixed on the periphery of the first pipelines, or the heat exchange fins are arranged between two adjacent first pipelines in a Z-shaped mode in a reciprocating mode. Optionally, the number of the heat exchange units is plural, and the heat exchange units are connected in series. Optionally, a heat insulation layer is arranged between the front heat exchange unit and the rear heat exchange unit. Optionally, the drying device for battery preparation further comprises a shell, wherein the shell is provided with an accommodating space, and the heat exchange unit is positioned in the accommodating space. The drying device for battery preparation not only can recover waste heat from hot gas and heat reversely input cold gas, namely, can absorb the waste heat in the gas, store heat and preserve heat and heat other gases, but also is beneficial to realizing self-circulation and efficient heat exchange of heat storage working media. Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. Fig. 1 is a schematic view illustrating an internal structure of a drying apparatus for battery preparation ac