A hot pressed composite plate structure for energy storage box

Abstract

The present invention discloses a hot-pressed composite plate structure for an energy storage box, the hot-pressed composite plate includes a liquid cooling plate, a foam aluminum plate and a bottom guard plate, the liquid cooling plate, the foam aluminum plate and the bottom guard plate are formed into a composite integrated structure by hot pressing with adhesive film, the bottom guard plate is provided with a foam aluminum plate, the liquid cooling plate covers the foam aluminum plate, and the fitting position of the liquid cooling plate and the foam aluminum plate and the fitting position of the foam aluminum plate and the bottom guard plate are respectively a profiled plate surface fitting configuration; the hot-pressed composite plate also includes reverse double-threaded fasteners evenly distributed along its plate edge structure, the reverse double-threaded fasteners penetrate the edge of the hot-pressed composite plate, and fasten the liquid cooling plate and the bottom guard plate along the opposite directions of clamping and tightening the foam aluminum plate. The present invention adopts a hot-pressed composite plate with a composite integrated structure formed by hot pressing of a liquid cooling plate, a foam aluminum plate and a bottom guard plate adhesive film, so as to realize a high-strength lightweight design of the energy storage box, and the edge of the plate body is fastened by a reverse double-threaded fastener to avoid the phenomenon of loose connection caused by metal fatigue, and ensure the stability of the structural connection.

Description

Technical Field

[0001] The present invention belongs to the technical field of plate structures constituting an energy storage box, and in particular relates to a hot-pressed composite plate structure of an energy storage box. Background Art

[0002] In order to meet the load-bearing capacity, the energy storage box generally adopts the technology of combining liquid cooling with high-strength structure to select the required plates. Since the existing plates use more steel structures to improve the structural strength, the mass of the manufactured energy storage box is relatively large. In addition, the connection between the liquid cooling plate and the steel plate of the selected plates is fastened with rivet nuts. Long-term use is prone to fatigue and loosening of the metal connection, which poses a hidden danger to the safety of the box structure. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a hot-pressed composite plate structure for an energy storage box, which is a hot-pressed composite plate with a composite integrated structure formed by hot pressing of a liquid cooling plate, a foam aluminum plate and a bottom guard plate film. The edges of the plate are fastened by reverse double-threaded fasteners, thereby achieving a high-strength and lightweight design of the energy storage box while avoiding loose connections caused by metal fatigue.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides a hot-pressed composite plate structure for an energy storage box, which comprises a liquid cooling plate, a foam aluminum plate and a bottom guard plate. The liquid cooling plate, the foam aluminum plate and the bottom guard plate are formed into a composite integrated structure by hot pressing with adhesive film, the bottom guard plate is arranged to cover the foam aluminum plate, the liquid cooling plate covers the foam aluminum plate, and the fitting position of the liquid cooling plate and the foam aluminum plate and the fitting position of the foam aluminum plate and the bottom guard plate are respectively contoured plate surface fitting configurations; the hot-pressed composite plate also comprises reverse double-threaded fasteners evenly distributed along its plate edge structure, the reverse double-threaded fasteners penetrate the edge of the hot-pressed composite plate, and fasten the liquid cooling plate and the bottom guard plate along the opposite directions of clamping and tightening the foam aluminum plate.

[0005] Furthermore, the liquid cooling plate is composed of a base plate and a flow channel plate connected by brazing, the base plate covers the flow channel groove of the flow channel plate to form a liquid cooling water channel, and the circulating water inlet end and the circulating water outlet end of the liquid cooling water channel are respectively provided with a circulating water inlet interface and a circulating water outlet interface located on the base plate.

[0006] Furthermore, the bottom guard plate is provided with striped ribs uniformly distributed in a linear array along the length direction or the width direction, and the striped ribs are in a concave shape.

[0007] Furthermore, the base plate and the flow channel plate are both aluminum plates, and the bottom guard plate is a steel plate.

[0008] Furthermore, the reverse double-threaded fastener includes a threaded column, a double-threaded cylinder and an internally threaded sleeve that are coaxially threaded in sequence from the inside to the outside; the double-threaded cylinder passes through the fastening hole on the hot-pressed composite plate to limit the liquid cooling plate axially downward; the threaded column is screwed into the double-threaded cylinder from the bottom thread; the internally threaded sleeve is screwed on the double-threaded cylinder from the bottom thread to limit the bottom guard plate axially upward; the double-threaded cylinder and the internally threaded sleeve cooperate through thread feeding to fasten the liquid cooling plate and the bottom guard plate in opposite directions of clamping and tightening the foam aluminum plate; the thread feed rotation direction of the threaded column is opposite to the thread feed rotation direction of the internally threaded sleeve, and a radially movable positioning screw is provided on the internally threaded sleeve, and the positioning screw feeds radially presses and positions the threaded column, and through the pressure positioning contact of the positioning screw, the loosening activity of the thread withdrawal between the threaded column, the double-threaded cylinder and the internally threaded sleeve is limited.

[0009] Furthermore, the double-threaded barrel is arranged to penetrate the edge of the liquid cooling plate and the bottom guard plate, and it is composed of a barrel head, a barrel through-body and a barrel threaded body with gradually decreasing radial dimensions from top to bottom, the barrel head fits the liquid cooling plate, the barrel through-body passes through the fastening hole of the hot-pressed composite plate, and the inside and outside of the barrel of the barrel threaded body are both threaded structures; the lower end of the threaded column is provided with a baffle and an inner hexagonal mounting head, the threaded column is screwed into the barrel threaded body, and the baffle abuts against the end of the barrel threaded body; the upper end of the inner threaded sleeve is an upper top sleeve part which is partially sleeved on the barrel through-body part, the upper top sleeve part fits the bottom guard plate, the lower end of the inner threaded sleeve is an outer hexagonal mounting head, the positioning screw pin is radially movably connected to the outer hexagonal mounting head, and the positioning screw pin is pressed and positioned on the inner hexagonal mounting head during radial feeding; the barrel head of the double-threaded barrel and the outer hexagonal mounting head of the inner threaded sleeve cooperate to clamp and tighten the liquid cooling plate and the bottom guard plate connected by hot pressing with a rubber film.

[0010] Furthermore, a plurality of outer triangular reinforcing ribs are arranged in a circumferential array at the connection between the upper top sleeve portion and the internal threaded sleeve.

[0011] Furthermore, the barrel is provided with inner reinforcing ribs intersecting at the center of its axis through the barrel.

[0012] Beneficial effect: The present invention adopts a hot-pressed composite plate with a composite integrated structure formed by hot pressing of a liquid cooling plate, a foam aluminum plate and a bottom guard plate film, which eliminates the phenomenon of using a large amount of steel materials and can achieve a high-strength and lightweight design of the energy storage box. The edge of the hot-pressed composite plate is fastened by a reverse double-threaded fastener, and the fastening method is to clamp and tighten the foam aluminum plate in opposite directions to connect and clamp it, instead of the rivet nut being driven in for friction fastening in the prior art. The clamping and fastening in opposite directions can avoid the loose connection caused by metal fatigue, thereby ensuring the stability of the structural connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] AttachedFigure 1 It is a schematic diagram of the overall structure of the hot pressed composite board;

[0014] Attached Figure 2 It is a schematic diagram of the structural decomposition of the hot pressed composite board;

[0015] Attached Figure 3 It is a schematic diagram of the overall structure of a reverse double-threaded fastener;

[0016] Attached Figure 4 It is a schematic diagram of the structural decomposition of a reverse double thread fastener;

[0017] Attached Figure 5 This is a schematic diagram of the half-section structure of a reverse double-threaded fastener. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 5 As shown, a hot-pressed composite plate structure of an energy storage box body, the hot-pressed composite plate includes a liquid cooling plate 1, a foam aluminum plate 3 and a bottom guard plate 2, the liquid cooling plate 1, the foam aluminum plate 3 and the bottom guard plate 2 are formed into a composite integrated structure by hot pressing with adhesive film, the bottom guard plate 2 is arranged to cover the foam aluminum plate 3, the liquid cooling plate 1 covers the foam aluminum plate 3, and the fitting position of the liquid cooling plate 1 and the foam aluminum plate 3 and the fitting position of the foam aluminum plate 3 and the bottom guard plate 2 are respectively contoured plate surface fitting configurations; the hot-pressed composite plate also includes reverse double-threaded fasteners 4 evenly distributed along its plate edge structure, the reverse double-threaded fasteners 4 pass through the edge of the hot-pressed composite plate, and fasten the liquid cooling plate 1 and the bottom guard plate 2 along the opposite directions of clamping and tightening the foam aluminum plate 3. The present invention adopts a hot-pressed composite plate with a composite integrated structure formed by hot-pressing a liquid cooling plate 1, a foam aluminum plate 3 and a bottom guard plate 2, which eliminates the phenomenon of using a large amount of steel materials and can achieve a high-strength and lightweight design of the energy storage box. The edge of the hot-pressed composite plate is fastened by a reverse double-threaded fastener 4, and the fastening method is to clamp and tighten the foam aluminum plate 3 in opposite directions to connect and clamp it, instead of the rivet nut being driven in and frictionally fastened in the prior art. The clamping and fastening in opposite directions can avoid the loose connection caused by metal fatigue, thereby ensuring the stability of the structural connection.

[0020] Foam aluminum has low density, high shock absorption and impact energy absorption rate, and good electromagnetic shielding, sound insulation, heat dissipation and heat resistance.

[0021] As attached Figure 2As shown, the liquid cooling plate 1 is composed of a base plate 11 and a flow channel plate 12 connected by brazing. The base plate 11 covers the flow channel groove of the flow channel plate 12 to form a liquid cooling water channel. The circulating water inlet end and the circulating water outlet end of the liquid cooling water channel are respectively provided with a circulating water inlet interface 1a and a circulating water outlet interface 1b located on the base plate 11. The bottom guard plate 2 is provided with striped ribs uniformly distributed in a linear array along the length direction or the width direction. The striped ribs are in a concave shape to enhance the structural strength of the bottom guard plate 2. The base plate 11 and the flow channel plate 12 are both aluminum plates, and the bottom guard plate 2 is a steel plate.

[0022] As attached Figure 3 , Attachment Figure 4 And attached Figure 5 As shown, the reverse double-threaded fastener 4 includes a threaded column 41, a double-threaded barrel 42 and an internal threaded sleeve 43 that are coaxially threaded from the inside to the outside; the double-threaded barrel 42 is set to penetrate the fastening hole 5 on the hot-pressed composite plate to limit the liquid cooling plate 1 axially downward; the threaded column 41 is screwed into the double-threaded barrel 42 from the bottom thread; the internal threaded sleeve 43 is screwed on the double-threaded barrel 42 from the bottom thread to limit the bottom guard plate 2 axially upward; the double-threaded barrel 42 and the internal threaded sleeve 43 are screwed together by threads The inner thread sleeve 43 is provided with a radially movable positioning screw 44, and the positioning screw 44 feeds radial pressure to position the threaded column 41. Through the pressure positioning contact of the positioning screw 44, the loosening activity of the threaded column 41, the double threaded cylinder 42 and the inner threaded sleeve 43 is limited. The reverse double-threaded fastener 4 in the present invention is different from the rivet nut in the prior art in terms of the fixing method. The rivet nut is driven into the plate and fastened by means of through-friction, while the reverse double-threaded fastener 4 in the present invention clamps and tightens the foam aluminum plate 3 in opposite directions for connection, clamping and fastening. It does not rely on the friction with the plate to provide fastening support. Therefore, its structure is not prone to friction damage and has strong fatigue resistance. Moreover, the threaded column 41, double-threaded cylinder 42, and internal threaded sleeve 43 that constitute the reverse double-threaded fastener 4 realize threaded connection while realizing mutually restricted anti-retraction thread loosening activities, and the fastening is more reliable.

[0023] More specifically, as Figure 4 and attached Figure 5As shown, the double-threaded barrel 42 is arranged to penetrate the edge of the liquid cooling plate 1 and the bottom guard plate 2, and is composed of a barrel head 42a, a barrel penetration body 42b and a barrel threaded body 42c, which are gradually reduced in radial size from top to bottom. The barrel head 42a fits the liquid cooling plate 1, and the barrel penetration body 42b penetrates the fastening hole 5 of the hot-pressed composite plate. The inside and outside of the barrel of the barrel threaded body 42c are both threaded structures; the lower end of the threaded column 41 has a baffle 41a and a hexagonal mounting head 42b, and the threaded column 41 is screwed into the barrel threaded body 42c, and the baffle 41a abuts against the barrel threaded body 4 2c end; the upper end of the internal threaded sleeve 43 is an upper top sleeve portion 43a that is partially sleeved on the barrel through-body portion 42b, and the upper top sleeve portion 43a fits the bottom guard plate 2, and the lower end of the internal threaded sleeve 43 is an external hexagonal mounting head 43b, and the positioning screw 44 is radially movably connected to the external hexagonal mounting head 43b, and the positioning screw 44 is press-positioned on the internal hexagonal mounting head 42b during radial feeding; the barrel head 42a of the double-threaded barrel 42 and the external hexagonal mounting head 43b of the internal threaded sleeve 43 cooperate to clamp and tighten the liquid cooling plate 1 and the bottom guard plate 2 connected by hot pressing of the adhesive film. The installation method of the reverse double-threaded fastener 4 of the present invention is as follows: place the hot-pressed composite plate on the support platform, first take the double-threaded barrel 42 and insert it into the fastening hole 5 on the hot-pressed composite plate, then use two wrenches, one wrench to fix the double-threaded barrel 42, and the other handle to screw the threaded column 41 into the double-threaded barrel 42, and then use a wrench to screw the internal threaded sleeve 43 onto the barrel thread body 42c, so that the upper top sleeve 43a is on the bottom guard plate 2, and the barrel head 42a is pressed down on the liquid cooling plate 1, so that the barrel head 42a and the upper top sleeve 43a cooperate to clamp the liquid cooling plate 1 and the bottom guard plate 2 for installation, finally install the positioning screw 44 on the external hexagonal mounting head 43b, and make the external hexagonal mounting head 43b feed radial pressure positioning on the threaded column 41, and the installation of the reverse double-threaded fastener 4 can be completed.

[0024] In order to improve the structural strength of the connection between the upper top sleeve portion 43a and the internal threaded sleeve 43, in the present invention, a plurality of outer triangular reinforcing ribs 4.1 are arranged in a circumferential array at the connection between the upper top sleeve portion 43a and the internal threaded sleeve 43.

[0025] In order to improve the radial support capability of the barrel through-body portion 42b, the barrel through-body portion 42b is provided with inner reinforcing ribs 4.2 intersecting at the center of its axis.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hot-pressed composite plate structure of an energy storage box, characterized in that: The hot-pressed composite plate comprises a liquid cooling plate (1), a foam aluminum plate (3) and a bottom guard plate (2); the liquid cooling plate (1), the foam aluminum plate (3) and the bottom guard plate (2) are formed into a composite integrated structure by hot pressing with adhesive film; the bottom guard plate (2) is arranged to cover the foam aluminum plate (3); the liquid cooling plate (1) covers the foam aluminum plate (3); and the fitting position of the liquid cooling plate (1) and the foam aluminum plate (3) and the fitting position of the foam aluminum plate (3) and the bottom guard plate (2) are respectively contoured plate surface fitting configurations; the hot-pressed composite plate also comprises reverse double-threaded fasteners (4) uniformly distributed along the edge structure of the plate; the reverse double-threaded fasteners (4) penetrate the edge of the hot-pressed composite plate and fasten the liquid cooling plate (1) and the bottom guard plate (2) along the opposite directions of clamping and tightening the foam aluminum plate (3); The liquid cooling plate (1) is composed of a base plate (11) and a flow channel plate (12) connected by brazing, the base plate (11) covers the flow channel groove of the flow channel plate (12) to form a liquid cooling water channel, and the circulating water inlet end and the circulating water outlet end of the liquid cooling water channel are respectively provided with a circulating water inlet interface (1a) and a circulating water outlet interface (1b) located on the base plate (11); The bottom guard plate (2) is provided with striped ribs evenly distributed in a linear array along the length direction or the width direction, and the striped ribs are in a concave shape; The reverse double-threaded fastener (4) comprises a threaded column (41), a double-threaded barrel (42) and an internal threaded sleeve (43) which are coaxially threadedly connected in sequence from the inside to the outside; the double-threaded barrel (42) is arranged to penetrate the fastening hole (5) on the hot-pressed composite plate to limit the liquid cooling plate (1) axially downward; the threaded column (41) is screwed into the double-threaded barrel (42) from the bottom thread; the internal threaded sleeve (43) is screwed onto the double-threaded barrel (42) from the bottom thread to limit the bottom guard plate (2) axially upward; the double-threaded barrel (42) and the internal threaded sleeve (43) are screwed together by thread feed Cooperate to fasten the liquid cooling plate (1) and the bottom guard plate (2) along the opposite directions of clamping and tightening the foam aluminum plate (3); the thread feed rotation direction of the threaded column (41) is opposite to the thread feed rotation direction of the internal threaded sleeve (43); the internal threaded sleeve (43) is provided with a radially movable positioning screw (44); the positioning screw (44) feeds radial pressure to position the threaded column (41); through the pressure positioning contact of the positioning screw (44), the loosening activity of the thread withdrawal between the threaded column (41), the double threaded cylinder (42) and the internal threaded sleeve (43) is limited.

2. The hot-pressed composite plate structure of an energy storage box according to claim 1, characterized in that: The base plate (11) and the flow channel plate (12) are both aluminum plates, and the bottom guard plate (2) is a steel plate.

3. The hot-pressed composite plate structure of an energy storage box according to claim 1, characterized in that: The double-threaded barrel (42) is arranged to penetrate the edge of the liquid cooling plate (1) and the bottom guard plate (2), and is composed of a barrel head (42a) whose radial size gradually decreases, a barrel penetration body (42b) and a barrel threaded body (42c) from top to bottom. The barrel head (42a) fits the liquid cooling plate (1), the barrel penetration body (42b) penetrates the fastening hole (5) of the hot-pressed composite plate, and the inside and outside of the barrel threaded body (42c) are both threaded structures; the lower end of the threaded column (41) has a baffle (41a) and a hexagonal mounting head (42b), the threaded column (41) is screwed into the barrel threaded body (42c), and the baffle (41a) abuts against the barrel threaded body (42c). c) end portion; the upper end of the internally threaded sleeve (43) is an upper sleeve portion (43a) partially sleeved on the barrel through-body portion (42b), the upper sleeve portion (43a) fits the bottom guard plate (2), the lower end of the internally threaded sleeve (43) is an external hexagonal mounting head (43b), the positioning screw pin (44) is radially flexibly connected to the external hexagonal mounting head (43b), and the positioning screw pin (44) is press-positioned on the internal hexagonal mounting head (42b) during radial feeding; the barrel head (42a) of the double-threaded barrel (42) and the external hexagonal mounting head (43b) of the internally threaded sleeve (43) cooperate with each other to clamp and fasten the liquid cooling plate (1) and the bottom guard plate (2) connected by hot pressing of the adhesive film.

4. The hot-pressed composite plate structure of the energy storage box according to claim 3, characterized in that: A plurality of outer triangular reinforcing ribs (4.1) are arranged in a circumferential array at the connection between the upper top sleeve portion (43a) and the internal thread sleeve (43).

5. The hot-pressed composite plate structure of the energy storage box according to claim 3, characterized in that: The barrel through-body (42b) is provided with inner reinforcing ribs (4.2) intersecting at the center of its axis.

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