Battery box with natural heat dissipation and heat preservation functions

Abstract

The utility model provides a battery box with both natural heat dissipation and heat preservation. The battery box comprises a box body and a heat insulation assembly, a containing groove is formed in the box body; the heat insulation assembly comprises a fixed plate, a moving framework, a heat insulation sheet and a driving mechanism; the fixing plate comprises a fixing plate body and two folded edges, the fixing plate body is located below the box body, and at least two guide columns are arranged on the fixing plate body; the two folded edges are connected with the two ends of the fixing plate body respectively, and the folded edges are connected with the bottom face of the box body, so that a gap is formed between the fixing plate body and the bottom face of the box body; the motion framework is slidably mounted on the guide column; the heat-insulating sheet is connected with one side, away from the fixing plate body, of the moving framework; the driving mechanism is in driving connection with the moving framework. The driving mechanism drives the moving framework to slide along the guide columns, so that the heat insulation sheet can be attached to or separated from the bottom surface of the box body, the heat insulation sheet acts during attachment to meet the heat preservation requirement of the battery pack, natural heat dissipation of the battery box is not affected during separation, the bonding connection mode of the battery cells and the box body is kept, and the service life of the battery box is prolonged. And the overall rigidity of the battery pack is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery box that combines natural heat dissipation and heat preservation. Background Technology

[0002] The basic function of a battery box is to house and protect the battery pack. Its structure must ensure sufficient strength while maximizing storage space, taking into account space efficiency and the varying operating environments of automobiles. To ensure the battery operates within a suitable temperature range, thereby extending its lifespan and maintaining stable performance, the battery box needs thermal insulation. Common insulation methods for battery boxes include adding internal insulation sheets, such as MPP, aerogel, and PU foam. These insulation sheets are typically placed on the bottom and sides of the battery box, with the sides offering relatively weaker insulation performance; most are placed on the bottom.

[0003] The existing technology of placing the insulation sheet on the bottom of the battery box for heat preservation has the following disadvantages: 1. The original bonding between the battery cell and the sheet metal box body has been changed to bonding between the battery cell and the insulation sheet, which significantly reduces the overall rigidity of the battery pack; 2. Most of the natural heat dissipation of the battery pack is completed from the battery cell to the thermally conductive structural adhesive and then to the bottom of the battery box body. Adding an insulation sheet between the battery cell and the box body will significantly reduce the heat dissipation efficiency of the battery box. Utility Model Content

[0004] In view of this, the present invention proposes a battery box that takes into account both natural heat dissipation and heat preservation, in order to solve the technical problems mentioned in the background art, which are that adding a heat insulation sheet between the battery cell and the box body will greatly reduce the heat dissipation efficiency of the battery box, and that the bonding of the battery cell and the heat insulation sheet will greatly reduce the overall rigidity of the battery pack.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a battery box that combines natural heat dissipation and heat preservation, including a box body and a heat insulation component, wherein:

[0007] The box body is provided with a receiving slot;

[0008] The thermal insulation assembly includes a fixed plate, a moving frame, a thermal insulation sheet, and a driving mechanism. The fixed plate includes a fixed plate body and two flanges. The fixed plate body is located below the housing body and has at least two guide posts. The two flanges are respectively connected to both ends of the fixed plate body and are connected to the bottom surface of the housing body, so that there is a gap between the fixed plate body and the bottom surface of the housing body. The moving frame is slidably mounted on the guide posts. The thermal insulation sheet is connected to the side of the moving frame away from the fixed plate body. The driving mechanism is drivenly connected to the moving frame.

[0009] Based on the above technical solutions, preferably, the heat insulation component further includes a support plate, which is welded to the moving frame, and the heat insulation sheet is attached to the support plate.

[0010] Based on the above technical solutions, preferably, the driving mechanism includes a motor, a driving gear, and a gear screw; the motor is mounted on the fixed plate body; the driving gear is connected to the output shaft of the motor; the gear screw is rotatably mounted on the fixed plate body, the gear screw includes a coaxial driven gear and a screw, the driven gear meshes with the driving gear, the screw is threadedly connected to the motion skeleton, and the screw is parallel to the guide post.

[0011] Based on the above technical solutions, preferably, the fixing plate body is provided with a relief groove protruding to the side away from the folded edge, and the motor is disposed in the relief groove.

[0012] Based on the above technical solutions, preferably, the bottom surface of the box body is provided with a reinforcing longitudinal beam, and the folded edge is connected to the reinforcing longitudinal beam.

[0013] Based on the above technical solutions, preferably, the bottom surface of the box body is also provided with a reinforcing crossbeam, which is perpendicular to the reinforcing longitudinal beam.

[0014] Based on the above technical solutions, preferably, the bottom of the receiving groove is provided with multiple fixed beams in parallel, the battery cell is placed in the receiving groove, the two sides of the battery cell are respectively attached to two of the fixed beams, and the bottom surface of the battery cell is fixedly attached to the bottom surface of the box body.

[0015] Based on the above technical solutions, preferably, the motion frame is provided with hollow holes.

[0016] Based on the above technical solutions, preferably, the side of the box body is provided with a hoisting structure.

[0017] The battery box of this invention, which combines natural heat dissipation and heat preservation, has the following advantages over the prior art:

[0018] (1) There is a gap between the bottom surface of the fixed plate body and the box body. The driving mechanism drives the moving frame to slide along the guide column, so that the heat insulation sheet can be attached to or separated from the bottom surface of the box body. When attached, the heat insulation sheet can play a role to meet the heat preservation requirements of the battery pack. When separated, it does not affect the natural heat dissipation of the battery box, and maintains the connection method of bonding the battery cell to the box body, thus ensuring the overall rigidity of the battery pack.

[0019] (2) The support plate is welded to the motion frame, and the insulation sheet is pasted on the support plate, which facilitates the replacement of the insulation sheet, makes installation and maintenance convenient, and improves reliability;

[0020] (3) The motor drives the active gear to rotate, and the active gear drives the driven gear to rotate, thereby driving the coaxial screw to rotate. Since the moving frame is limited by the guide column, the moving frame cannot rotate. The moving frame moves along the guide column under the drive of the screw, so that the insulation sheet can be attached to or separated from the bottom surface of the box body.

[0021] (4) A relief groove is provided on the side away from the folded edge through the fixed plate body. The motor is set in the relief groove, so that the motor occupies less of the gap between the fixed plate body and the box body, thereby making the gap utilization rate higher. Under the same motion stroke of the moving frame, the structure can be more compact, the volume can be reduced, the weight can be reduced, and the energy density of the battery pack can be increased.

[0022] (5) A reinforcing longitudinal beam is provided on the bottom surface of the box body, and the folded edge is connected to the reinforcing longitudinal beam to improve the bottom strength of the box body, so as to compensate for the influence of the weight of the insulation component, and at the same time overcome the influence of the driving force of the drive mechanism on the strength of the box body, thereby improving the reliability and stability of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0024] Figure 1 This is a first-view perspective view of the battery box of this utility model, which combines natural heat dissipation and heat preservation.

[0025] Figure 2 This is a perspective view of the battery box of this utility model, which combines natural heat dissipation and heat preservation, from a second-view perspective.

[0026] Figure 3 An exploded view of the battery box of this utility model that combines natural heat dissipation and heat preservation.

[0027] Figure 4 This is a schematic diagram of the structure of the box body of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the thermal insulation component of this utility model;

[0029] Figure 6 This is an exploded view of the thermal insulation component of this utility model;

[0030] Figure 7 This is a schematic diagram of the drive mechanism of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1-Box body, 2-Insulation components;

[0032] 11-Receiving groove, 12-Reinforcing longitudinal beam, 13-Reinforcing transverse beam, 14-Fixing beam, 15-Lifting structure;

[0033] 21-Fixed plate, 211-Fixed plate body, 2111-Allowing groove, 212-Folded edge, 213-Guide post, 22-Motion frame, 221-Hollow hole, 23-Insulation sheet, 24-Drive mechanism, 241-Motor, 242-Drive gear, 243-Gear screw, 2431-Driven gear, 2432-Screw, 25-Support plate. Detailed Implementation

[0034] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0035] Reference Figures 1-7 As shown in the embodiment of this utility model, a battery box that combines natural heat dissipation and heat preservation is proposed, including a box body 1 and a heat insulation component 2, wherein:

[0036] The housing body 1 is provided with a receiving groove 11, in which battery cells, battery management system (BMS), etc. are placed, and the battery cells are attached to the bottom surface of the housing body 1.

[0037] The thermal insulation component 2 includes a fixed plate 21, a moving frame 22, a thermal insulation sheet 23, and a driving mechanism 24. The fixed plate 21 includes a fixed plate body 211 and two flanges 212. The fixed plate body 211 is located below the housing body 1, and at least two guide posts 213 are provided on the fixed plate body 211. The two flanges 212 are respectively connected to both ends of the fixed plate body 211, and the flanges 212 are perpendicular to the fixed plate body 211 and located on the same side. The flanges 212 are connected to the bottom surface of the housing body 1, so that there is a gap between the fixed plate body 211 and the bottom surface of the housing body 1. The moving frame 22 is slidably mounted on the guide posts 213. The thermal insulation sheet 23 is connected to the side of the moving frame 22 away from the fixed plate body 211. The driving mechanism 24 is drivenly connected to the moving frame 22.

[0038] In this embodiment, as Figure 6 As shown, there are four guide posts 213 arranged in a rectangular pattern, which makes the sliding of the moving frame 22 smoother and improves the reliability of the device. The number of guide posts 213 can also be set to three, five or more, depending on the needs.

[0039] The battery box proposed in this embodiment combines natural heat dissipation and heat preservation. By having a gap between the fixed plate body 211 and the bottom surface of the box body 1, the driving mechanism 24 drives the moving frame 22 to slide along the guide post 213, so that the heat insulation sheet 23 can be attached to or separated from the bottom surface of the box body 1. When attached, the heat insulation sheet 23 can function to meet the heat preservation requirements of the battery pack. When separated, it does not affect the natural heat dissipation of the battery box, and maintains the bonding connection between the battery cell and the box body 1, thus ensuring the overall rigidity of the battery pack.

[0040] In some embodiments, the insulation component 2 further includes a support plate 25, which is welded to the moving frame 22, and the insulation sheet 23 is adhered to the support plate 25. The support plate 25 is located between the moving frame 22 and the insulation sheet 23. The support plate 25 is attached to the moving frame 22 and fixed by welding. The insulation sheet 23 is connected to the support plate 25 by adhesion, which facilitates the replacement of the insulation sheet 23, makes installation and maintenance convenient, improves reliability, and the support plate 25 provides good support for the insulation sheet 23, allowing the insulation sheet 23 to be laid out flat, increasing the contact area with the bottom surface of the housing body 1, and improving the insulation effect.

[0041] In some embodiments, the drive mechanism 24 includes a motor 241, a drive gear 242, and a gear screw 243; the motor 241 is mounted on the fixed plate body 211; the drive gear 242 is connected to the output shaft of the motor 241; the gear screw 243 is rotatably mounted on the fixed plate body 211, the gear screw 243 includes a coaxial driven gear 2431 and a screw 2432, the driven gear 2431 meshes with the drive gear 242, the screw 2432 is threadedly connected to the motion frame 22, and the screw 2432 is parallel to the guide post 213. The motor 241 drives the drive gear 242 to rotate, which in turn drives the driven gear 2431 to rotate, thereby causing the coaxial screw 2432 to rotate. Since the moving frame 22 is limited by the guide post 213, the moving frame 22 cannot rotate. Driven by the screw 2432, the moving frame 22 moves along the guide post 213, so that the insulation sheet 23 can be attached to or separated from the bottom surface of the housing body 1.

[0042] In other embodiments, the drive mechanism 24 may be a combination of a cylinder and a lead screw, and is not limited to the above structure, as long as it can drive the moving frame 22 to move linearly.

[0043] In some embodiments, the fixing plate body 211 has a relief groove 2111 protruding from the side away from the folded edge 212, and the motor 241 is disposed in the relief groove 2111. By disposing the motor 241 in the relief groove 2111, which protrudes from the fixing plate body 211 from the side away from the folded edge 212, the motor 241 occupies less space between the fixing plate body 211 and the housing body 1, thereby increasing the utilization rate of the space. With the same stroke of the moving frame 22, the structure can be more compact, reducing volume and weight, and increasing the energy density of the battery pack.

[0044] In some embodiments, the bottom surface of the housing body 1 is provided with a reinforcing longitudinal beam 12, and the folded edge 212 is connected to the reinforcing longitudinal beam 12. By connecting the folded edge 212 to the reinforcing longitudinal beam 12, the reinforcing longitudinal beam 12 improves the bottom surface strength of the housing body 1 to compensate for the influence of the weight of the insulation component 2, and at the same time overcomes the influence of the driving force of the drive mechanism 24 on the strength of the housing body 1, thereby improving the reliability and stability of the device.

[0045] In a further embodiment, the bottom surface of the housing body 1 is also provided with a reinforcing crossbeam 13, which is perpendicular to the reinforcing longitudinal beams 12. Specifically, there are three reinforcing longitudinal beams 12, which are arranged parallel to each other at intervals. The reinforcing crossbeam 13 passes through and connects the three reinforcing longitudinal beams 12, dividing the space into four squares, each square being provided with a heat insulation component 2. The reinforcing crossbeam 13 further improves the bottom surface strength of the housing body 1, thereby further improving the reliability of the device.

[0046] In some embodiments, the bottom of the receiving groove 11 is provided with a plurality of fixing beams 14 parallel to each other. The battery cell is placed in the receiving groove 11, with its two sides respectively abutting against two of the fixing beams 14, and its bottom surface fixedly abutting against the bottom surface of the housing body 1. By clamping the two sides of the battery cell with the two fixing beams 14, the bottom surface of the battery cell is bonded to the bottom surface of the housing body 1, thereby facilitating the installation and fixing of the battery cell, improving the overall integrity of the battery pack, and increasing the overall strength of the battery pack.

[0047] In some embodiments, the motion frame 22 is provided with perforated holes 221. By providing perforated holes 221 on the motion frame 22, weight can be reduced while ensuring strength, thereby reducing the overall weight of the battery box and increasing the energy density of the battery pack.

[0048] In some embodiments, a lifting structure 15 is provided on the side of the housing body 1. The lifting structure 15 is a downward hook structure, and the lifting structure 15 is welded and fixed to the side of the housing body 1 to facilitate lifting operations and provide convenience for the transfer and transportation of the battery box.

[0049] The working principle of this battery box, which combines natural heat dissipation and heat preservation, is as follows: the motor 241 drives the active gear 242 to rotate, and the active gear 242 drives the driven gear 2431 to rotate, thereby driving the coaxial screw 2432 to rotate. The moving frame 22 moves along the guide post 213 under the drive of the screw 2432, so that the heat insulation sheet 23 can be attached to or separated from the bottom surface of the box body 1. When attached, the heat insulation sheet 23 can play its role to meet the heat preservation requirements of the battery pack. When separated, it does not affect the natural heat dissipation of the battery box, and maintains the bonding connection between the battery cell and the box body 1, thus ensuring the overall rigidity of the battery pack.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery box that combines natural heat dissipation and heat preservation, characterized in that, Includes the enclosure body (1) and the insulation components (2), wherein: The top surface of the box body (1) is provided with a receiving groove (11); The insulation component (2) includes a fixed plate (21), a moving frame (22), an insulation sheet (23), and a driving mechanism (24). The fixed plate (21) includes a fixed plate body (211) and two flanges (212). The fixed plate body (211) is located below the box body (1). The fixed plate body (211) is provided with at least two guide posts (213). The two flanges (212) are respectively connected to the two ends of the fixed plate body (211) and the flanges (212) are connected to the bottom surface of the box body (1) so that there is a gap between the fixed plate body (211) and the bottom surface of the box body (1). The moving frame (22) is slidably mounted on the guide posts (213). The insulation sheet (23) is connected to the side of the moving frame (22) away from the fixed plate body (211). The driving mechanism (24) is drivenly connected to the moving frame (22).

2. The battery box as described in claim 1, which combines natural heat dissipation and heat preservation, is characterized in that, The insulation component (2) also includes a support plate (25), which is welded to the motion frame (22), and the insulation sheet (23) is attached to the support plate (25).

3. The battery box as described in claim 1, which combines natural heat dissipation and heat preservation, is characterized in that... The drive mechanism (24) includes a motor (241), a drive gear (242), and a gear screw (243); the motor (241) is mounted on the fixed plate body (211); the drive gear (242) is connected to the output shaft of the motor (241); the gear screw (243) is rotatably mounted on the fixed plate body (211), the gear screw (243) includes a coaxial driven gear (2431) and a screw (2432), the driven gear (2431) meshes with the drive gear (242), the screw (2432) is threadedly connected to the motion frame (22), and the screw (2432) is parallel to the guide post (213).

4. The battery box as described in claim 3, which combines natural heat dissipation and heat preservation, is characterized in that... The fixed plate body (211) has a relief groove (2111) protruding from the side away from the folded edge (212), and the motor (241) is disposed in the relief groove (2111).

5. The battery box as described in claim 1, which combines natural heat dissipation and heat preservation, is characterized in that... The bottom surface of the box body (1) is provided with a reinforcing longitudinal beam (12), and the folded edge (212) is connected to the reinforcing longitudinal beam (12).

6. The battery box as described in claim 5, which combines natural heat dissipation and heat preservation, is characterized in that... The bottom surface of the box body (1) is also provided with a reinforcing crossbeam (13), which is perpendicular to the reinforcing longitudinal beam (12).

7. The battery box as described in claim 1, which combines natural heat dissipation and heat preservation, is characterized in that, The bottom of the receiving groove (11) is provided with multiple fixed beams (14) in parallel. The battery cell is placed in the receiving groove (11). The two sides of the battery cell are respectively attached to two of the fixed beams (14), and the bottom surface of the battery cell is fixedly attached to the bottom surface of the box body (1).

8. The battery box as described in claim 1, which combines natural heat dissipation and heat preservation, is characterized in that, The motion frame (22) is provided with hollow holes (221).

9. The battery box that combines natural heat dissipation and heat preservation as described in any one of claims 1-8, characterized in that, The side of the box body (1) is provided with a hoisting structure (15).

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