Battery cell hot-pressing die

Abstract

The embodiment of the utility model provides a battery cell hot-pressing mold, and relates to the technical field of battery production equipment. The battery cell hot-pressing mold fixes the mold and the first covering layer. The fixed mold comprises a first side and a second side which are arranged at an interval along the thickness direction of the fixed mold, the first side of the fixed mold is provided with a mounting groove for placing a battery cell, the first covering layer is used for covering the first side of the fixed mold so as to cover the battery cell in the mounting groove, and the depth size of the mounting groove is smaller than the thickness size of the battery cell; the first cover layer is made of a high temperature resistant, flexible and thermally conductive material. And the hot press performs hot pressing on one side surface, far away from the battery core, of the first covering layer, so that the damage of the battery core caused by foreign matters on the hot press during hot pressing of the battery core can be effectively reduced through the arrangement of the first covering layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production equipment technical field, specifically, relate to a battery core hot press mould. BACKGROUND

[0002] Lithium ion battery core package is a key step in the hot pressing process, aims at ensuring the close contact of electrode material, improving battery performance and enhancing structural stability by applying pressure and heat.

[0003] Some existing lithium ion battery core package in hot pressing process, mainly uses hot press to directly contact battery core and press, and once there is foreign matter on the surface of the hot press, the foreign matter can cause damage to the battery core under great pressure. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a battery core hot press mould, which can reduce the damage of the battery core in the hot pressing process caused by foreign matter on the surface of the hot press.

[0005] The embodiment of the utility model can be realized as follows:

[0006] In a first aspect, the utility model provides a battery core hot press mould, comprising:

[0007] The fixed mould comprises a first side and a second side arranged at intervals along the thickness direction of the fixed mould, and the first side of the fixed mould is provided with a mounting groove for placing the battery core;

[0008] The first covering layer is used for covering the first side of the fixed mould to cover the battery core in the mounting groove;

[0009] The depth size of the mounting groove is smaller than the thickness size of the battery core, and the first covering layer is made of high-temperature-resistant, flexible and heat-conducting material.

[0010] In an optional embodiment, the fixed mould comprises a mould body and a second covering layer, the second covering layer is used for covering the second side of the mould body, the mould body is provided with a through hole, and the mould body and the second covering layer jointly define the mounting groove.

[0011] In an optional embodiment, the second covering layer is made of flexible material.

[0012] In an optional embodiment, the second covering layer is made of flexible heat-conducting material.

[0013] In an optional embodiment, the second covering layer is bonded to the second side of the mould body.

[0014] In an optional embodiment, the first covering layer has opposite first and second ends, and the first end of the first covering layer is connected to the first side of the fixed mould.

[0015] In an optional embodiment, the first end of the first cover layer is bonded to the first side of the fixed mold.

[0016] In an optional embodiment, the area of the second cover layer is greater than or equal to the area of the second side of the mold body.

[0017] In an optional embodiment, when the first cover layer covers the first side of the fixed mold, the projection of the mounting groove in the thickness direction falls completely on the first cover layer.

[0018] In an optional embodiment, the mounting groove comprises a first groove body, a second groove body and a third groove body arranged in sequence along a first direction, the size of the first groove body in a second direction is smaller than the size of the second groove body in the second direction, the size of the third groove body in the second direction is smaller than the size of the second groove body in the second direction, the first direction and the second direction form an angle, and the thickness direction is perpendicular to the first direction and the second direction.

[0019] The utility model embodiment provides a kind of battery core hot-pressing mold fixed mold and first cover layer. Fixed mold includes the first side and second side being arranged at interval along the thickness direction of itself, the first side of fixed mold is equipped with the mounting groove of battery core placement, first cover layer is used to cover the first side of fixed mold, to cover the battery core in mounting groove, the depth size of mounting groove is less than the thickness size of battery core, and first cover layer is made of high-temperature-resistant, flexible and heat-conducting material. Hot press is heated and pressed to the side surface of first cover layer away from battery core, by the setting of first cover layer, the damage of battery core due to the foreign matter on hot press when hot-pressing can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0021] Fig. 1 The structure schematic diagram under the first visual angle of the battery core hot-pressing mold provided by the embodiments of the utility model is provided.

[0022] Fig. 2 The structure schematic diagram under the second visual angle of the battery core hot-pressing mold provided by the embodiments of the utility model is provided.

[0023] Fig. 3 The explosion schematic diagram of the battery core hot-pressing mold provided by the embodiments of the utility model is provided.

[0024] Icon: 1-battery core hot-pressing die; 100-fixed die; 110-die body; 120-second cover layer; 130-mounting groove; 131-first groove body; 132-second groove body; 133-third groove body; 140-first side; 150-second side; 200-first cover layer; 2-battery core. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the present application when it is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0029] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0031] The specific structure of the battery core hot-pressing die provided by the embodiments of the present application and the corresponding technical effects brought by it will be described in detail below with reference to the patent drawings.

[0032] Please refer to Figs. 1-3The utility model discloses a kind of battery core hot-pressing mould 1 including fixed mould 100 and first covering layer 200. Fixed mould 100 includes the first side 140 and second side 150 being arranged at interval along its thickness direction, the first side 140 of fixed mould 100 is equipped with the installation groove 130 where battery core 2 is placed, first covering layer 200 is used to cover the first side 140 of fixed mould 100, to cover battery core 2 in installation groove 130, the depth size of installation groove 130 is less than the thickness size of battery core 2, first covering layer 200 is made of high-temperature-resistant, flexible and heat-conducting material.

[0033] That is, battery core 2 is protruding from the first side 140 of fixed mould 100 on the side away from the bottom surface of installation groove 130, so that the hot press can transmit pressure to battery core 2 when hot pressing, first covering layer 200 has good flexibility, high-temperature resistance and heat conduction performance.

[0034] Therefore, when the hot press hot-presses battery core 2, battery core 2 can be placed in installation groove 130 in advance, and battery core 2 is guaranteed to be installed in place by the limitation of installation groove 130. Further, first covering layer 200 is covered on the first side 140 of fixed mould 100 and battery core 2 in installation groove 130, and the hot press hot-presses first covering layer 200. Through the setting of first covering layer 200, the damage of battery core 2 caused by foreign matter on the hot press during hot pressing can be effectively reduced.

[0035] It should be noted that first covering layer 200 can be made of one of silicone composite material, polytetrafluoroethylene or flexible metal foil. It can be understood that silicone composite material, polytetrafluoroethylene and flexible metal foil all have good flexibility, heat conductivity and high-temperature resistance, and also have good anti-sticking performance.

[0036] Therefore, first covering layer 200 can better fit the surface of battery core 2, so that battery core 2 has more uniform pressure distribution, to ensure the hot-pressing effect of battery core 2.

[0037] It should be noted that first covering layer 200 also has good high-temperature resistance, and will not be damaged and adhere to the hot press due to high temperature when hot-pressed by the hot press, and has good heat conductivity, which can ensure that heat is quickly and uniformly transmitted to the surface of the core package, improve the hot-pressing efficiency, and the soft surface reduces the risk of adhesion with the glued diaphragm, and maintains good separation even under high temperature conditions.

[0038] In detail, in the embodiment, the first cover layer 200 has opposite first and second ends, the first end of the first cover layer 200 is connected to the first side 140 of the fixed mold 100, and in detail, the first and second ends are arranged along the length direction of the first cover layer 200. Since the first end of the first cover layer 200 is connected to the first side 140 of the fixed mold 100, when the battery cell 2 needs to be hot-pressed, the worker can conveniently lift the first cover layer 200 to place the battery cell 2 in the mounting groove 130, and then cover the first cover layer 200 on the battery cell 2.

[0039] Of course, in some other embodiments, the first and second ends can also be arranged along the width direction of the first cover layer 200.

[0040] In detail, the first end of the first cover layer 200 is bonded to the first side 140 of the fixed mold 100, and the first end is located on one side of the mounting groove 130, so as to ensure the connection strength of the first cover layer 200 and the fixed mold 100.

[0041] It should be noted that in the embodiment, when the first cover layer 200 covers the first side 140 of the fixed mold 100, the projection of the mounting groove 130 in the thickness direction completely falls on the first cover layer 200, that is, the first cover layer 200 can completely cover the mounting groove 130, so as to ensure that the first cover layer 200 completely covers the battery cell 2 in the mounting groove 130.

[0042] In detail, the fixed mold 100 includes a mold body 110 and a second cover layer 120, the second cover layer 120 is used to cover the second side 150 of the mold body 110, the mold body 110 is provided with a through hole, and the mold body 110 and the second cover layer 120 jointly define the mounting groove 130, that is, the second cover layer 120 can be understood as the bottom surface of the mounting groove 130, and the shape of the through hole is matched with the shape of the battery cell 2.

[0043] It can be understood that since the fixed mold 100 is made of the mold body 110 and the second cover layer 120, when the battery cell 2 needs to be hot-pressed, the second cover layer 120 can be arranged on the second side 150 of the mold body 110, so as to facilitate the worker to transport the fixed mold 100, and the worker can also select the second cover layer 120 made of different materials.

[0044] That is, the second cover layer 120 and the first cover layer 200 are arranged opposite to each other in the thickness direction of the mold body 110. It should be noted that when the battery cell hot-pressing mold 1 provided in the embodiment is upright, the second cover layer 120 can be understood as a lower cover layer, and the first cover layer 200 can be understood as an upper cover layer.

[0045] In the embodiment, the second covering layer 120 is made of flexible material. It can be understood that, when the battery core 2 is placed in the installation groove 130, the battery core 2 is in contact with the second covering layer 120, which can ensure that the second covering layer 120 is well attached to the surface of the battery core 2, and the second covering layer 120 will not be in hard contact with the battery core 2, which ensures that the battery core 2 will not be easily damaged during hot pressing.

[0046] In the embodiment, the second covering layer 120 is made of flexible material. It can be understood that, when the battery core 2 is placed in the installation groove 130, the battery core 2 is in contact with the second covering layer 120, which can ensure that the second covering layer 120 is well attached to the surface of the battery core 2, and the second covering layer 120 will not be in hard contact with the battery core 2, which ensures that the battery core 2 will not be easily damaged during hot pressing.

[0047] In order to avoid damage to the second covering layer 120 during hot pressing, the second covering layer 120 also has good heat resistance, which can ensure that it will not be damaged in a high-temperature environment during hot pressing, so as to ensure the smooth completion of hot pressing of the battery core 2.

[0048] Optionally, in the embodiment, the second covering layer 120 is bonded to the second side 150 of the mold body 110, so as to ensure the stability of the connection between the second covering layer 120 and the mold body 110, thereby ensuring that the second covering layer 120 is fixedly arranged on the second side 150 of the mold body 110.

[0049] In order to ensure the bonding stability of the second covering layer 120, one side of the second covering layer 120 can be coated with a bonding layer during bonding, so as to ensure that the second covering layer 120 is relatively uniformly bonded to the surface of the second side 150 of the mold body 110, or a layer of adhesive for bonding the second covering layer 120 is coated on the surface of the second side 150 of the mold body 110.

[0050] Of course, in some other embodiments, the second covering layer 120 can also be bonded to the second side 150 of the mold body 110 by means of glue dispensing. Alternatively, in some embodiments, the second covering layer 120 can also be connected to the second side 150 of the mold body 110 by other means, for example, the second covering layer 120 is connected to the fixed mold 100 by screws.

[0051] Optionally, it should be noted that, in order to ensure that the second covering layer 120 can completely cover the through hole of the mold body 110, the area of the second covering layer 120 is greater than or equal to the area of the second side 150 of the mold body 110. Of course, in some other embodiments, the area of the second covering layer 120 can also be smaller than the area of the second side 150 of the mold body 110, as long as the second covering layer 120 can completely cover the through hole, and the second covering layer 120 serves as the bottom surface of the installation groove 130.

[0052] Optionally, the mounting groove 130 comprises a first groove body 131, a second groove body 132 and a third groove body 133 arranged in sequence along a first direction, a size of the first groove body 131 in a second direction is smaller than a size of the second groove body 132 in the second direction, a size of the third groove body 133 in the second direction is smaller than the size of the second groove body 132 in the second direction, the first direction and the second direction are at an angle, and the thickness direction is perpendicular to the first direction and the second direction.

[0053] In detail, in the embodiment, the first direction and the second direction are perpendicular. It should be noted that the first end of the first cover layer 200 is arranged on a side of the first groove body 131 away from the second groove body 132, that is, the arrangement direction of the first end and the second end of the first cover layer 200 is the same as the arrangement direction of the first groove body 131, the second groove body 132 and the third groove body 133.

[0054] It should be noted that the perpendicular in the embodiment should not be limited to the strict sense of perpendicular, but can be approximately perpendicular.

[0055] In summary, the utility model discloses a kind of battery core hot-pressing mould 1 fixed mould 100 and first cover layer 200. Fixed mould 100 includes first side 140 and second side 150 spaced apart along the thickness direction thereof, the first side 140 of fixed mould 100 is provided with mounting groove 130 for placing battery core 2, and first cover layer 200 is used to cover the first side 140 of fixed mould 100, to cover battery core 2 in mounting groove 130, the depth size of mounting groove 130 is smaller than the thickness size of battery core 2, and first cover layer 200 is made of high-temperature-resistant, flexible and heat-conducting material. The side of first cover layer 200 away from battery core 2 is hot-pressed by hot press, by the arrangement of first cover layer 200, the damage of battery core 2 due to foreign matter on hot press during hot-pressing can be effectively reduced.

[0056] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A battery cell hot press mold, characterized by, The battery core hot-pressing mold comprises a fixed mold and a first cover layer. The fixed mold comprises a first side and a second side arranged along a thickness direction of the fixed mold, and the first side of the fixed mold is provided with a mounting groove for placing a battery core. The depth of the mounting groove is smaller than the thickness of the battery core, and the first cover layer is made of high-temperature-resistant, flexible and heat-conducting material.

2. The battery core hot-pressing mold according to claim 1, wherein the fixed mold comprises a mold body and a second cover layer, the second cover layer is arranged on the second side of the mold body, the mold body is provided with a through hole, and the mold body and the second cover layer jointly define the mounting groove.

3. The battery core hot-pressing mold according to claim 2, wherein the second cover layer is made of flexible material.

4. The battery core hot-pressing mold according to claim 2, wherein the second cover layer is made of flexible heat-conducting material.

5. The battery core hot-pressing mold according to claim 2, wherein the second cover layer is bonded to the second side of the mold body.

6. The battery core hot-pressing mold according to claim 1, wherein the first cover layer has opposite first and second ends, and the first end of the first cover layer is connected to the first side of the fixed mold.

7. The battery core hot-pressing mold according to claim 6, wherein the first end of the first cover layer is bonded to the first side of the fixed mold.

8. The battery core hot-pressing mold according to claim 2, wherein the area of the second cover layer is greater than or equal to the area of the second side of the mold body.

9. The battery core hot-pressing mold according to claim 1, wherein when the first cover layer is arranged on the first side of the fixed mold, the projection of the mounting groove on the thickness direction falls completely on the first cover layer.

10. The battery core hot-pressing mold according to claim 1, wherein the mounting groove comprises a first groove body, a second groove body and a third groove body arranged in sequence along a first direction, the size of the first groove body in a second direction is smaller than the size of the second groove body in the second direction, the size of the third groove body in the second direction is smaller than the size of the second groove body in the second direction, the first direction and the second direction form an angle, and the thickness direction is perpendicular to the first direction and the second direction. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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