An electric cell preheating furnace

Abstract

The utility model discloses a kind of electric core preheating furnace, it is related to electric core preheating technical field.The electric core preheating furnace includes shell, heating mechanism and fixture, preheating cavity is formed in shell, the sidewall of shell is equipped with material placing opening and air vent, fixture is set in the inside of preheating cavity, electric core can be placed in fixture by material placing opening, heating mechanism is located in the outside of preheating cavity, heating mechanism can generate hot air and send hot air from the air vent to preheating cavity.The electric core preheating furnace, since fixture is set in the inside of preheating cavity, heating mechanism is located in the outside of preheating cavity, thus, when needing to disassemble and repair heating mechanism, heating mechanism can be disassembled without disassembling shell, easy to operate.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell preheating technology, and in particular relates to a battery cell preheating furnace. Background Technology

[0002] In the manufacturing of lithium-ion batteries, battery cells are widely used in various electronic products, electric vehicles, and energy storage systems due to their high energy density, good cycle performance, and ease of mass production. The hot-pressing process of battery cells, as a key production step, plays a decisive role in the performance and quality of the cells. Hot pressing enables the positive and negative electrode plates inside the cell to adhere tightly to the separator, reducing contact resistance, improving ion transport efficiency, and thus enhancing the battery's charge-discharge performance and stability.

[0003] Before the hot pressing process, the battery cells need to undergo preheating. Preheating is a process of heating the battery cells under certain temperature and time conditions. However, in existing preheating devices, the heating mechanism is installed inside the preheating chamber, making disassembly and maintenance of the heating mechanism inconvenient. Therefore, it is necessary to design a battery cell preheating furnace that facilitates the disassembly and maintenance of the heating mechanism. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a preheating furnace for electric cells, which addresses the inconvenience of disassembling and maintaining existing heating mechanisms.

[0005] To address the aforementioned problems, this utility model provides a battery cell preheating furnace for preheating battery cells. The furnace includes a housing, a heating mechanism, and a fixture. A preheating cavity is formed within the housing. A material placement port and a ventilation hole are provided on the side wall of the housing. The fixture is located inside the preheating cavity, allowing the battery cell to be placed into the fixture through the material placement port. The heating mechanism is located outside the preheating cavity and generates hot air, which is then transported to the preheating cavity through the ventilation hole.

[0006] As a further improvement to the above technical solution:

[0007] Optionally, the fixture includes a pull-out mechanism, a placement base plate, and a sealing plate. The pull-out mechanism is installed inside the preheating chamber. The placement base plate and the sealing plate are both installed on the pull-out mechanism. The placement base plate is used to place the battery cell. The pull-out mechanism is used to extend the placement base plate out of or into the preheating chamber. The sealing plate can seal the material inlet.

[0008] Optionally, the fixture further includes a positioning element for positioning the battery cell placed on the placement base plate.

[0009] Optionally, the sealing plate is located on the side of the housing near the sealing plate, and / or the housing is provided with a sealing strip on the side near the sealing plate, the sealing plate being able to compress the sealing strip to seal the material inlet.

[0010] Optionally, the cell preheating furnace further includes a circulating filtration mechanism installed inside the preheating chamber, which is used to filter the hot air generated by the heating mechanism.

[0011] Optionally, the circulating filtration mechanism includes a filter housing, an air distribution plate, and a filter. The air distribution plate and the filter are both installed inside the filter housing. The air distribution plate can evenly blow the hot air generated by the heating mechanism to the battery cell, and the filter can filter the hot air generated by the heating mechanism.

[0012] Optionally, the heating mechanism includes a power fan and a heating element, wherein the power fan can generate airflow, and the heating element can heat the airflow generated by the power fan to form hot air.

[0013] Optionally, the cell preheating furnace further includes a furnace body, and both the shell and the heating mechanism are mounted on the furnace body.

[0014] Optionally, the furnace body has an installation cavity and a hot air cavity, the heating mechanism is installed in the installation cavity, and the housing is installed in the hot air cavity.

[0015] Optionally, the hot air chamber has a furnace opening on its side wall, and a furnace door is installed at the furnace opening of the hot air chamber, which can open or close the furnace opening.

[0016] Optionally, an air curtain is provided between the material inlet and the furnace opening, and the air curtain can isolate the heat inside the shell.

[0017] Optionally, the mounting cavity and the hot air cavity are located at the same height, and the furnace body is provided with multiple layers of the mounting cavity and multiple layers of the hot air cavity along the height direction.

[0018] This utility model provides a battery cell preheating furnace, which, compared with the prior art, has at least the following advantages: When preheating of battery cells is required, the battery cells to be preheated are first placed on the fixture through the feeding port. Then, the heating mechanism generates hot air and delivers the hot air to the preheating chamber to preheat the battery cells. Since the fixture is located inside the preheating chamber and the heating mechanism is located outside the preheating chamber, the heating mechanism can be disassembled and reassembled without disassembling the housing when it needs to be disassembled or repaired, making the operation simple. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a cell preheating furnace provided in one embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of a cell preheating furnace provided in one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the fixture for the battery cell preheating furnace provided in one embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the circulating filtration mechanism of the battery cell preheating furnace provided in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the heating mechanism of the battery cell preheating furnace provided in one embodiment of the present invention;

[0025] Figure 6 This is a front view of the heating mechanism of the battery cell preheating furnace provided in one embodiment of the present invention;

[0026] Figure 7 This is a side view of the heating mechanism of the battery cell preheating furnace provided in one embodiment of the present invention.

[0027] The reference numerals in the accompanying drawings are as follows:

[0028] 100. Battery cell preheating furnace; 110. Shell; 111. Material inlet; 120. Heating mechanism; 121. Power fan; 122. Heating element; 130. Fixture; 131. Pull-out mechanism; 132. Placement base plate; 133. Sealing plate; 134. Positioning component; 135. Sealing strip; 140. Circulation filtration mechanism; 141. Filter shell; 142. Inlet air distribution plate; 143. High-efficiency filter; 144. Return air distribution plate; 145. Primary filter; 150. Furnace body; 151. Mounting cavity; 152. Hot air cavity; 153. Furnace opening; 154. Furnace door; 155. Air curtain. Detailed Implementation

[0029] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 1 to 2 As shown, an embodiment of the present invention provides a battery cell preheating furnace 100 for preheating battery cells. The battery cell preheating furnace 100 includes a shell 110, a heating mechanism 120, and a fixture 130. A preheating cavity is formed inside the shell 110. A material placement port 111 and a ventilation hole are provided on the side wall of the shell 110. The fixture 130 is disposed inside the preheating cavity. The battery cell can be placed in the fixture 130 through the material placement port 111. The heating mechanism 120 is located outside the preheating cavity. The heating mechanism 120 can generate hot air and deliver the hot air to the preheating cavity through the ventilation hole.

[0033] When the battery cell needs to be preheated, the battery cell to be preheated is first placed on the fixture 130 through the feeding port 111. Then the heating mechanism 120 generates hot air and delivers the hot air to the preheating chamber through the ventilation hole so that the hot air preheats the battery cell to be preheated.

[0034] The battery cell preheating furnace 100 provided in one embodiment of the present invention has a fixture 130 located inside the preheating cavity and a heating mechanism 120 located outside the preheating cavity. Therefore, when it is necessary to disassemble and repair the heating mechanism 120, it is not necessary to disassemble the housing 110 to disassemble and repair the heating mechanism 120, which makes the operation simple.

[0035] The battery cell preheating furnace 100 provided in one embodiment of this utility model, please refer to... Figure 3 The fixture 130 includes a pull-out mechanism 131, a placement base plate 132, and a sealing plate 133. The pull-out mechanism 131 is installed inside the preheating chamber. The placement base plate 132 and the sealing plate 133 are both installed on the pull-out mechanism 131. The placement base plate 132 is used to place the battery cell. The pull-out mechanism 131 is used to extend or retract the placement base plate 132 into the preheating chamber. The sealing plate 133 can seal the material inlet 111.

[0036] When the battery cell needs to be preheated, the sealing plate 133 is driven, causing the pulling mechanism 131 to extend outward from the feeding port 111 until the placement base plate 132 extends out of the preheating chamber. Then, the battery cell to be preheated is placed on the placement base plate 132. After that, the sealing plate 133 is driven, causing the pulling mechanism 131 to retract inward from the feeding port 111 until the placement base plate 132 extends into the preheating chamber. The sealing plate 133 seals the feeding port 111. Finally, the heating mechanism 120 generates hot air and delivers the hot air to the preheating chamber so that the hot air preheats the battery cell to be preheated.

[0037] The fixture 130 of this structure is equipped with a pull-out mechanism 131 that can extend the placement base plate 132 out of the preheating cavity when placing the battery cell to be preheated, so as to avoid damage to the operator caused by the high temperature in the preheating cavity. At the same time, a sealing plate 133 is provided, which can seal the material inlet 111 when the placement base plate 132 is extended into the preheating cavity, so as to prevent the high temperature in the preheating cavity from overflowing from the material inlet 111.

[0038] In one specific embodiment, please refer to Figure 3 The fixture 130 also includes a positioning element 134, which is used to position the battery cell placed on the placement base plate 132. In this embodiment, the positioning element 134 is a positioning block, and the position of the positioning block on the placement base plate 132 is adjustable so that the positioning element 134 can position battery cells of different sizes. The placement base plate 132 has multiple mounting holes, and the positioning block can be installed in the mounting holes by bolts.

[0039] Please refer to the battery cell preheating furnace 100 provided in one embodiment of this utility model for details. Figure 2The sealing plate 133 is located on the side of the housing 110 near the sealing plate 133, and / or the housing 110 is provided with a sealing strip 135 on the side of the housing 110 near the sealing plate 133. The sealing plate 133 can compress the sealing strip 135 to seal the material inlet 111. Providing a sealing strip 135 can enhance the sealing performance between the sealing plate 133 and the housing 110. In this embodiment, the sealing strip 135 is a high-temperature rubber sealing strip 135.

[0040] Please refer to the battery cell preheating furnace 100 provided in one embodiment of this utility model for details. Figure 2 and Figure 4 The cell preheating furnace 100 also includes a circulating filter mechanism 140, which is installed inside the preheating chamber. The circulating filter mechanism 140 is used to filter the hot air generated by the heating mechanism 120, effectively control the cleanliness of the hot air blown towards the cell, avoid impurities in the hot air from contaminating the cell, and improve product quality.

[0041] In a specific embodiment, please refer to the following. Figure 2 and Figure 4 The circulating filtration mechanism 140 includes a filter housing 141, an air distribution plate, and a filter. Both the air distribution plate and the filter are installed inside the filter housing 141. The air distribution plate ensures that the hot air generated by the heating mechanism 120 is evenly distributed to the battery cell, and the filter filters the hot air generated by the heating mechanism 120. The heating mechanism 120 includes a power fan 121 and a heating element 122. The power fan 121 generates airflow, and the heating element 122 heats the airflow generated by the power fan 121 to form hot air.

[0042] In this embodiment, the air distribution plate includes an inlet air distribution plate 142 and a return air distribution plate 144, and the filter includes a high-efficiency filter 143 and a pre-filter 145. Hot air is filtered by the pre-filter 145 and the high-efficiency filter 143 to effectively control cleanliness and improve product quality. The inlet air distribution plate 142 and the return air distribution plate 144 can blow hot air evenly onto the battery cell through the air hole structure distributed on them, thereby improving the heating effect. Hot air enters from the air inlet of the filter housing 141, passes through the inlet air distribution plate 142, the high-efficiency filter 143, the return air distribution plate 144 and the pre-filter 145 in sequence, and is discharged from the air outlet of the filter housing 141.

[0043] Please refer to the following for details. Figure 5 , Figure 6 and Figure 7The heating mechanism 120 is equipped with a heating chamber and an air supply chamber. The heating chamber is equipped with a heating element. The air outlet of the heating chamber is connected to the air outlet of the air receiver. The air inlet of the heating chamber is connected to the air outlet of the air supply chamber. The air inlet of the air supply chamber is connected to the air inlet of the air receiver. The circulating hot air enters from the air inlet of the air receiver, passes through the air supply chamber and the heating chamber in sequence, and is discharged from the air outlet of the air receiver. The heating chamber is equipped with a heating element to heat the circulating hot air. The air supply chamber is equipped with an impeller. The impeller is driven to rotate by a high-temperature motor located on the back of the heating air receiver to provide power for the circulating hot air.

[0044] Please refer to the battery cell preheating furnace 100 provided in one embodiment of this utility model for details. Figure 1 and Figure 2 The cell preheating furnace 100 also includes a furnace body 150, with a housing 110 and a heating mechanism 120 both mounted on the furnace body 150. The furnace body 150 forms an mounting cavity 151 and a hot air cavity 152. The housing 110 is mounted in both the mounting cavity 151 and the hot air cavity 152. The furnace body 150 provides mounting positions for the housing 110 and the heating mechanism 120, and the mounting cavity 151 and the hot air cavity 152 can protect the housing 110 and the heating mechanism 120 respectively, preventing damage to them.

[0045] In a specific embodiment, please refer to the following. Figure 1 and Figure 2 A furnace opening 153 is provided on the side wall of the hot air chamber 152. A furnace door 154 is installed at the furnace opening 153 of the hot air chamber 152. The furnace door 154 can open or close the furnace opening 153. When the battery cell needs to be preheated, the furnace door 154 is opened, and the sealing plate 133 is driven so that the pulling mechanism 131 extends outward from the material inlet 111 until the placement base plate 132 extends out of the preheating chamber. Then, the battery cell to be preheated is placed on the placement base plate 132. After that, the sealing plate 133 is driven so that the pulling mechanism 131 retracts inward from the material inlet 111 until the placement base plate 132 extends into the preheating chamber. The sealing plate 133 seals the material inlet 111 and closes the furnace door 154. Finally, the heating mechanism 120 generates hot air and delivers the hot air to the preheating chamber so that the hot air preheats the battery cell to be preheated.

[0046] In this embodiment, please refer to the following for details. Figure 1 and Figure 2 An air curtain 155 is installed between the material inlet 111 and the furnace opening 153. The air curtain 155 can isolate the heat inside the shell 110. When the furnace door 154 is opened, the air curtain 155 can isolate the heat inside and outside, preventing heat from escaping from the shell 110 and burning workers, and preventing cold air from entering the shell 110 and interfering with the heating effect.

[0047] Please refer to the battery cell preheating furnace 100 provided in one embodiment of this utility model for details. Figure 2 The mounting cavity 151 and the hot air cavity 152 are located at the same height, and the furnace body 150 has multiple layers of mounting cavities 151 and multiple layers of hot air cavities 152 stacked along the height direction. Multiple heating mechanisms 120 can simultaneously preheat the corresponding battery cells in the shell 110, improving preheating efficiency. At the same time, since the multiple layers of mounting cavities 151 and multiple layers of hot air cavities 152 are stacked along the height direction, the floor space can be saved.

[0048] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A cell preheating furnace for preheating battery cells, characterized in that, The device includes a housing, a heating mechanism, and a fixture. A preheating cavity is formed inside the housing. A material placement port and a ventilation hole are provided on the side wall of the housing. The fixture is disposed inside the preheating cavity. The battery cell can be placed in the fixture through the material placement port. The heating mechanism is located outside the preheating cavity. The heating mechanism can generate hot air and deliver the hot air to the preheating cavity through the ventilation hole.

2. The cell preheating furnace according to claim 1, characterized in that, The fixture includes a pull-out mechanism, a placement base plate, and a sealing plate. The pull-out mechanism is installed inside the preheating chamber. The placement base plate and the sealing plate are both installed on the pull-out mechanism. The placement base plate is used to place the battery cell. The pull-out mechanism is used to extend or retract the placement base plate into the preheating chamber. The sealing plate can seal the material inlet.

3. The cell preheating furnace according to claim 2, characterized in that, The fixture also includes a positioning element for positioning the battery cell placed on the placement base plate.

4. The cell preheating furnace according to claim 2, characterized in that, The sealing plate is located on the side of the housing, and / or the housing is provided with a sealing strip on the side of the sealing plate, the sealing plate being able to compress the sealing strip to seal the material inlet.

5. The cell preheating furnace according to claim 1, characterized in that, The cell preheating furnace also includes a circulating filtration mechanism, which is installed inside the preheating chamber and is used to filter the hot air generated by the heating mechanism.

6. The cell preheating furnace according to claim 5, characterized in that, The circulating filtration mechanism includes a filter housing, an air distribution plate, and a filter. The air distribution plate and the filter are both installed inside the filter housing. The air distribution plate can evenly blow the hot air generated by the heating mechanism to the battery cell, and the filter can filter the hot air generated by the heating mechanism.

7. The cell preheating furnace according to claim 1, characterized in that, The heating mechanism includes a power fan and a heating element. The power fan can generate airflow, and the heating element can heat the airflow generated by the power fan to form hot air.

8. The cell preheating furnace according to claim 1, characterized in that, The cell preheating furnace also includes a furnace body, and the shell and the heating mechanism are both installed in the furnace body.

9. The cell preheating furnace according to claim 8, characterized in that, The furnace body has an installation cavity and a hot air cavity, the heating mechanism is installed in the installation cavity, and the shell is installed in the hot air cavity.

10. The cell preheating furnace according to claim 9, characterized in that, The hot air chamber has a furnace opening on its side wall, and a furnace door is installed at the furnace opening of the hot air chamber. The furnace door can open or close the furnace opening.

11. The cell preheating furnace according to claim 10, characterized in that, An air curtain is provided between the material inlet and the furnace opening, and the air curtain can isolate the heat inside the shell.

12. The cell preheating furnace according to claim 9, characterized in that, The mounting cavity and the hot air cavity are located at the same height, and the furnace body is provided with multiple layers of the mounting cavity and multiple layers of the hot air cavity along the height direction.

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