New energy heavy truck power battery fixing device

Abstract

The utility model relates to a new energy heavy truck power battery fixing device which comprises a power battery frame assembly, the power battery frame assembly is connected with a frame through a connecting support, and the power battery frame assembly comprises a bottom layer battery bracket, a protective cover, two sets of protective cover supports and a plurality of upper layer battery brackets. At least a bottom-layer battery bracket and an upper-layer battery bracket are sequentially arranged between the two groups of shield brackets from bottom to top, the left ends and the right ends of the bottom-layer battery bracket and the upper-layer battery bracket are connected through the shield brackets, upright post assemblies are arranged at the front ends and the rear ends of the bottom-layer battery bracket and the upper-layer battery bracket, and the power battery frame assembly is wrapped with a shield; the power battery frame assembly is formed by connecting the bottom-layer battery bracket, the protective cover support and the upper-layer battery bracket through bolts and can be correspondingly adjusted according to the specification, model and boundary dimension of the power battery, the assembling efficiency of the power battery is improved, and the purpose of generalization is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a power battery fixing device for a new energy heavy truck. Background Art

[0002] Pure electric heavy trucks are heavy and costly. Currently, the battery capacity, specifications, dimensions and installation hole spacing of power batteries are inconsistent, resulting in a wide variety of power battery fixing device structures.

[0003] To ensure their own safety, all pure electric heavy trucks currently have their power batteries placed at the rear. The rear power battery fixing device is heavy in weight. The battery frame and frame are assembled in such a way that the sub-beam at the bottom of the frame is seated on the wing surface of the frame, and the connecting plate connects the sub-beam and the frame. However, if other components are assembled on the outside of the frame to block the connecting plate, bolt assembly is difficult and inefficient. There are processing errors between the sub-beam and the frame, there is a gap between the connecting plate and the sub-beam or the frame, and there is an unequal fit between the bottom of the sub-beam and the wing surface of the frame, which affects the bolt connection and fixing strength; and the existing rear power battery frame is assembled into a welded integral frame, which makes battery assembly difficult and inefficient. Utility Model Content

[0004] The purpose of the utility model is to provide a new energy heavy truck power battery fixing device in view of the deficiencies in the prior art.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] A power battery fixing device for a new energy heavy truck comprises a power battery frame assembly, wherein the power battery frame assembly is connected to a vehicle frame via a connecting bracket, wherein the power battery frame assembly comprises a bottom battery bracket, a shield, two groups of shield brackets and a plurality of upper battery brackets, wherein at least the bottom battery bracket and the upper battery bracket are sequentially arranged between the two groups of shield brackets from bottom to bottom, wherein the left and right ends of the bottom battery bracket and the upper battery bracket are connected via the shield bracket, wherein column assemblies are arranged at the front and rear ends of the bottom battery bracket and the upper battery bracket, and the power battery frame assembly is wrapped with the shield.

[0007] Furthermore, the protective cover includes an upper protective cover, an expansion box protective cover, front and rear protective covers, and left and right protective covers. The upper protective cover is arranged at the upper end of the power battery frame assembly, the front and rear protective covers are arranged at the front and rear sides of the power battery frame assembly, the left and right protective covers are arranged at the left and right sides of the power battery frame assembly, and the expansion box protective cover is arranged at the expansion box.

[0008] Furthermore, the bottom battery bracket includes a plurality of bottom beams and a bottom bracket, the bottom beams are arranged between the bottom brackets, reinforcing ribs are arranged at the connection between the bottom beams and the bottom brackets, an L-shaped reinforcing plate is arranged on the inner side of the bottom bracket, a fixed bracket is arranged on the outer side of the bottom bracket, the fixed bracket is connected to the lower ends of the front and rear shields, and the upper ends of the front and rear shields are connected to the shield bracket.

[0009] Furthermore, the upper battery bracket includes a plurality of upper cross beams and an upper bracket, the upper cross beams are arranged between the upper brackets, reinforcing ribs are arranged at the connection between the upper bracket and the upper cross beams, and an L-shaped inner lining plate is arranged on the inner side of the upper bracket.

[0010] Furthermore, the shield bracket includes a left shield bracket and a right shield bracket, and the left shield bracket and the right shield bracket each include two groups of U-shaped beams, and the two groups of U-shaped beams are connected by a cross beam and a rectangular tube, and a hook bracket is provided at the upper end of the U-shaped beam. The inner sides of the left shield bracket and the right shield bracket are connected by a connecting rod, the bottom battery bracket and the upper battery bracket, the upper end of the connecting rod is connected to the upper shield, and the front and rear sides of the connecting rod are connected to the upper ends of the front and rear shields, and the outer sides of the left shield bracket and the right shield bracket are connected to the left and right shields.

[0011] Furthermore, the upper guard cover is provided with a hook hole, and the hook bracket passes through the hook hole and is located outside the upper guard cover.

[0012] Furthermore, the column assembly includes an I-shaped beam, a rectangular plate is provided at the lower end of the I-shaped beam, an L-shaped fixing plate is provided at the connection between the I-shaped beam and the rectangular plate, the I-shaped beam is connected to the bottom battery bracket and the upper battery bracket by bolts, and the rectangular plate is connected to the connecting bracket.

[0013] Furthermore, the connecting bracket is an L-shaped connecting bracket, the connecting bracket is provided with a fixing block, the connecting bracket is provided with a plurality of threaded holes, the connecting bracket is respectively arranged on the left and right sides of the frame by bolts, and the fixing block is connected to the rectangular plate.

[0014] Furthermore, observation holes and heat dissipation holes are provided on both sides of the expansion tank shield, and a filling cover is hinged on the upper end of the expansion tank shield; the left and right shields and the front and rear shields are all provided with louver heat dissipation holes.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The power battery frame assembly is fixedly connected to the frame by connecting the bracket to the column assembly, which solves the problems of being blocked by other parts during installation when the fixing device is connected to the frame, resulting in difficult and low assembly efficiency, and the problem of quality problems in the processing of the sub-beam resulting in failure to fully fit the frame. The power battery frame assembly is composed of a bottom battery bracket, a shield bracket and an upper battery bracket connected by bolts, and can be adjusted accordingly according to the specifications and dimensions of the power battery, thereby improving the assembly efficiency of the power battery and achieving the purpose of universalization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the protective cover in the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the power battery frame assembly of the utility model;

[0020] Figure 4 The structure of the bottom battery bracket in the utility model is shown in FIG. Figure 1 ;

[0021] Figure 5 The structure of the bottom battery bracket in the utility model is shown in FIG. Figure 2 ;

[0022] Figure 6 The structure of the upper battery bracket of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 7 The structure of the upper battery bracket of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 8 It is a schematic diagram of the connection structure between the connecting bracket and the frame in the utility model;

[0025] Fig. 9 It is a structural schematic diagram of the connecting bracket in the utility model;

[0026] Fig.10 It is a structural schematic diagram of the left shield bracket in the utility model;

[0027] Fig.11 It is a structural schematic diagram of the center column assembly of the utility model.

[0028] Reference numerals

[0029] 10. Power battery frame assembly; 20. Connecting bracket; 21. Fixing block; 30. Vehicle frame; 100. Bottom battery bracket; 101. Bottom crossbeam; 102. Bottom bracket; 103. Reinforcement rib; 104. L-shaped reinforcement plate; 105. Fixing bracket; 200. Shield; 201. Upper shield; 202. Expansion tank shield; 203. Front and rear shields; 204. Left and right shields; 300. Shield Bracket; 301, left shield bracket; 302, right shield bracket; 303, U-shaped beam; 304, cross beam; 305, rectangular tube; 306, hook bracket; 307, connecting rod; 400, upper battery bracket; 401, upper cross beam; 402, upper bracket; 404, L-shaped lining plate; 500, column assembly; 501, "J"-shaped beam; 502, rectangular plate; 503, L-shaped fixing plate. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] like Figure 1-11 As shown, a new energy heavy-duty truck power battery fixing device includes a power battery frame assembly 10, which is connected to a vehicle frame 30 via a connecting bracket 20. The power battery frame assembly 10 includes a bottom battery bracket 100, a shield 200, two groups of shield brackets 300 and a plurality of upper battery brackets 400. Between the two groups of shield brackets 300, at least a bottom battery bracket 100 and an upper battery bracket 400 are sequentially arranged from bottom to bottom. The left and right ends of the bottom battery bracket 100 and the upper battery bracket 400 are connected by the shield bracket 300. The front and rear ends of the bottom battery bracket 100 and the upper battery bracket 400 are both provided with a column assembly 500, and the power battery frame assembly is wrapped with a shield 200.

[0032] The protective cover 200 includes an upper protective cover 201, an expansion box protective cover 202, front and rear protective covers 203 and left and right protective covers 204. The upper protective cover 201 is arranged at the upper end of the power battery frame assembly 10, the front and rear protective covers 203 are arranged at the front and rear sides of the power battery frame assembly 10, the left and right protective covers 204 are arranged at the left and right sides of the power battery frame assembly 10, and the expansion box protective cover 202 is arranged at the expansion box.

[0033] The bottom battery bracket 100 includes a plurality of bottom cross beams 101 and a bottom bracket 102. The bottom cross beams 101 are arranged between the bottom brackets 102. A reinforcing rib 103 is arranged at the connection between the bottom cross beams 101 and the bottom bracket 102. An L-shaped reinforcing plate 104 is arranged on the inner side of the bottom bracket 102. A fixed bracket 105 is arranged on the outer side of the bottom bracket 102. The fixed bracket 105 is connected to the lower ends of the front and rear shields 203. The upper ends of the front and rear shields 203 are connected to the shield bracket 300.

[0034] The upper battery bracket 400 includes a plurality of upper cross beams 401 and an upper bracket 402 . The upper cross beams 401 are arranged between the upper brackets 402 . A reinforcing rib 103 is arranged at the connection between the upper bracket 402 and the upper cross beams 401 . An L-shaped inner lining plate 404 is arranged on the inner side of the upper bracket 402 .

[0035] The shield bracket 300 includes a left shield bracket 301 and a right shield bracket 302. The left shield bracket 301 and the right shield bracket 302 each include two groups of U-shaped beams 303. The two groups of U-shaped beams 303 are connected by a cross beam 304 and a rectangular tube 305. A hook bracket 306 is provided at the upper end of the U-shaped beam 303. The inner sides of the left shield bracket 301 and the right shield bracket 302 are connected by a connecting rod 307, a bottom battery bracket 100 and an upper battery bracket 400. The upper end of the connecting rod 307 is connected to the upper shield 201. The front and rear sides of the connecting rod 307 are connected to the upper ends of the front and rear shields 203. The outer sides of the left shield bracket 301 and the right shield bracket 302 are connected to the left and right shields 204.

[0036] The upper shield 201 is provided with a hook hole, and the hook bracket 306 passes through the hook hole and is located outside the upper shield 201 .

[0037] The column assembly 500 includes an I-shaped beam 501, a rectangular plate 502 is provided at the lower end of the I-shaped beam 501, an L-shaped fixing plate 503 is provided at the connection between the I-shaped beam 501 and the rectangular plate 502, the I-shaped beam 501 is connected to the bottom battery bracket 100 and the upper battery bracket 400 by bolts, and the rectangular plate 502 is connected to the connecting bracket 20.

[0038] The connecting bracket 20 is an L-shaped connecting bracket. The connecting bracket 20 is provided with a fixing block 21 . The connecting bracket 20 is provided with a plurality of threaded holes. The connecting bracket 20 is respectively provided on the left and right sides of the frame 30 by bolts. The fixing block 21 is connected to the rectangular plate 502 .

[0039] Observation holes and heat dissipation holes are arranged on both sides of the expansion tank shield 202, and a filling cover is hinged on the upper end of the expansion tank shield 202; the left and right shields 204 and the front and rear shields 203 are all provided with louver heat dissipation holes.

Claims

1. A new energy heavy truck power battery fixing device, characterized in that: The invention comprises a power battery frame assembly (10), wherein the power battery frame assembly (10) is connected to a vehicle frame (30) via a connecting bracket (20), the power battery frame assembly (10) comprises a bottom battery bracket (100), a shield (200), two groups of shield brackets (300) and a plurality of upper battery brackets (400), at least the bottom battery bracket (100) and the upper battery bracket (400) are arranged in sequence from bottom to bottom between the two groups of shield brackets (300), the left and right ends of the bottom battery bracket (100) and the upper battery bracket (400) are connected via the shield bracket (300), the front and rear ends of the bottom battery bracket (100) and the upper battery bracket (400) are both provided with a column assembly (500), and the power battery frame assembly is wrapped with the shield (200).

2. The new energy heavy truck power battery fixing device according to claim 1 is characterized in that: The protective cover (200) comprises an upper protective cover (201), an expansion box protective cover (202), front and rear protective covers (203) and left and right protective covers (204); the upper protective cover (201) is arranged at the upper end of the power battery frame assembly (10); the front and rear protective covers (203) are arranged at the front and rear sides of the power battery frame assembly (10); the left and right protective covers (204) are arranged at the left and right sides of the power battery frame assembly (10); and the expansion box protective cover (202) is arranged at the expansion box.

3. The new energy heavy truck power battery fixing device according to claim 2 is characterized in that: The bottom battery bracket (100) comprises a plurality of bottom cross beams (101) and a bottom bracket (102); the bottom cross beams (101) are arranged between the bottom brackets (102); reinforcing ribs (103) are arranged at the connection between the bottom cross beams (101) and the bottom bracket (102); an L-shaped reinforcing plate (104) is arranged on the inner side of the bottom bracket (102); a fixing bracket (105) is arranged on the outer side of the bottom bracket (102); the fixing bracket (105) is connected to the lower ends of the front and rear shields (203); and the upper ends of the front and rear shields (203) are connected to the shield bracket (300).

4. The new energy heavy truck power battery fixing device according to claim 2 is characterized in that: The upper battery bracket (400) comprises a plurality of upper cross beams (401) and an upper bracket (402), the upper cross beams (401) being arranged between the upper brackets (402), reinforcing ribs (103) being arranged at the connection between the upper brackets (402) and the upper cross beams (401), and an L-shaped inner lining plate (404) being arranged on the inner side of the upper bracket (402).

5. The new energy heavy truck power battery fixing device according to claim 2 is characterized in that: The shield bracket (300) comprises a left shield bracket (301) and a right shield bracket (302), each of which comprises two groups of U-shaped beams (303), the two groups of U-shaped beams (303) being connected via a crossbeam (304) and a rectangular tube (305), a hook bracket (306) being provided at the upper end of the U-shaped beam (303), the inner sides of the left shield bracket (301) and the right shield bracket (302) being connected via a connecting rod (307), the bottom battery bracket (100) and the upper battery bracket (400), the upper end of the connecting rod (307) being connected to the upper shield (201), the front and rear sides of the connecting rod (307) being connected to the upper ends of the front and rear shields (203), and the outer sides of the left shield bracket (301) and the right shield bracket (302) being connected to the left and right shields (204).

6. The new energy heavy truck power battery fixing device according to claim 5 is characterized in that: The upper guard cover (201) is provided with a hook hole, and the hook bracket (306) passes through the hook hole and is located outside the upper guard cover (201).

7. The new energy heavy truck power battery fixing device according to claim 1 is characterized in that: The column assembly (500) comprises an I-shaped beam (501), a rectangular plate (502) is provided at the lower end of the I-shaped beam (501), an L-shaped fixing plate (503) is provided at the connection between the I-shaped beam (501) and the rectangular plate (502), the I-shaped beam (501) is connected to the bottom battery bracket (100) and the upper battery bracket (400) by bolts, and the rectangular plate (502) is connected to the connecting bracket (20).

8. The new energy heavy truck power battery fixing device according to claim 7 is characterized in that: The connecting bracket (20) is an L-shaped connecting bracket, the connecting bracket (20) is provided with a fixing block (21), the connecting bracket (20) is provided with a plurality of threaded holes, the connecting bracket (20) is respectively arranged on the left and right sides of the vehicle frame (30) by bolts, and the fixing block (21) is connected to the rectangular plate (502).

9. The new energy heavy truck power battery fixing device according to claim 2 is characterized in that: Observation holes and heat dissipation holes are provided on both sides of the expansion tank shield (202), and a filling cover plate is hingedly connected to the upper end of the expansion tank shield (202); the left and right shields (204) and the front and rear shields (203) are all provided with louver heat dissipation holes.

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