Output stage base and protective cover integrated structure and battery pack cross beam

Abstract

The utility model discloses an output stage base and protective cover integrated structure and a battery pack cross beam, and belongs to the technical field of new energy batteries. The integrated structure comprises an output-stage base, the output-stage base comprises a base body fixed to a battery pack cross beam, the base body is of a blocky structure, a first base end plate and a second base end plate are arranged at the two ends of the top face of the base body, the top of the first base end plate is rotatably connected with a protective cover through a rotating shaft, and a chip fixing hole is formed in the top face of the base body; limiting grooves and limiting buckles which penetrate through the base body are arranged on the end faces of the two ends of the base body. The battery pack cross beam comprises a cross beam body, a base mounting notch is formed in the top of the cross beam body, and an output-stage base and protective cover integrated structure is mounted in the base mounting notch. According to the utility model, the output-stage protective cover and the base are integrated, so that the number of parts is reduced; the protective cover is hinged to the top of the first base end plate, so that automatic closing of the protective cover is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, and particularly relates to an integrated structure of an output stage base and a protective cover and a battery pack cross beam. Background Art

[0002] The existing module output stage bearing structure is generally composed of two materials, namely an output stage base and a protective cover. The output stage base is used to fix the high-voltage aluminum bar, and the protective cover structure is used to cover the high-voltage part to prevent it from being exposed. However, during the production, installation and maintenance of the battery pack, the protective cover needs to be frequently opened and closed, which easily causes problems such as inconvenient operation for personnel, loss of the protective cover, and forgetting to close the protective cover. At the same time, with the introduction of the CTB and CTC schemes for the battery pack, the cross beam of the battery pack gradually begins to replace the top cover end plate. Some output stage bases that can be installed on the module top cover end plate cannot be fixed on the box cross beam at the same time, and new rivets are needed to fix the base, or the structure needs to be redesigned. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides an integrated structure of an output stage base and a protective cover and a battery pack cross beam to meet the combination of the output stage protective cover and the base, reduce the number of parts, and the protective cover can automatically close after being opened.

[0004] To achieve the above purpose, the utility model designs an integrated structure of an output stage base and a protective cover, including an output stage base. The output stage base includes a base main body fixed on the battery pack cross beam. The base main body is a block structure, and a first base end plate and a second base end plate are provided at both ends of the top surface. The top of the first base end plate is rotatably connected with a protective cover through a rotating shaft. A bar fixing hole is provided on the top surface of the base main body, and a limiting groove and a limiting buckle penetrating the base main body are provided on both end faces of the base main body.

[0005] Preferably, the protective cover includes a cover plate. First and second top cover end plates are fixed at both ends of the bottom of the cover plate. The rotating shaft is a flexible hinge, and the bottom of the first top cover end plate is hinged to the base end plate through the flexible hinge.

[0006] Preferably, a fixed buckle is provided at the bottom of the second top cover end plate, a buckle groove is opened at the top of the second base end plate, and a limiting hole matched with the fixed buckle is opened on the inner wall of the buckle groove.

[0007] Preferably, the bar fixing hole is a screw hole, and a flange bolt is provided in the bar fixing hole.

[0008] Preferably, the base main body is integrally injection-molded, and a plurality of cavity holes are provided on the main body.

[0009] Preferably, the limiting buckle is an elastic tongue.

[0010] Preferably, the limit buckle is arranged below the limit groove.

[0011] The utility model also designs a battery pack crossbeam, which includes a crossbeam main body. A base installation notch is arranged at the top of the crossbeam main body. The output stage base and the protective cover integrated structure are installed in the base installation notch, and a first tab and a second tab are fixed in the tab fixing holes.

[0012] Preferably, the crossbeam main body is in a long strip shape, and a groove is opened in the middle of the top surface. One end of the groove penetrates through the other end but does not penetrate to form a base installation notch; limit bumps and rabbet structures are respectively arranged on two side surfaces of the base installation notch. The limit bumps are used to cooperate with the limit grooves to limit the base main body; the rabbet structures are used to cooperate with the limit buckles to limit the base main body.

[0013] Preferably, the crossbeam main body includes a first side plate and a second side plate which are arranged oppositely. The groove forming the base installation notch penetrates through the first side plate. A cavity is formed between the first side plate and the second side plate, and a rib plate is arranged in the cavity. The inner side surface of the first side plate forms a rabbet structure.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. By integrating the output stage protective cover and the base into one, the utility model reduces the number of parts.

[0016] 2. The utility model hinges the first top cover end plate to the base end plate through a flexible hinge, and can realize the automatic closing of the protective cover.

[0017] 3. Through the cooperation of the limit bumps and the limit grooves, and the cooperation of the rabbet structures and the limit buckles, the utility model can realize the rapid installation and fixation of the output stage base and the protective cover integrated structure. Description of the Drawings

[0018] Figure 1 It is the front view of the output stage base and the protective cover integrated structure of the utility model;

[0019] Figure 2 It is the back view of the output stage base and the protective cover integrated structure of the utility model;

[0020] Figure 3 It is the three-dimensional view of the output stage base and the protective cover integrated structure of the utility model when the protective cover is closed;

[0021] Figure 4 It is the three-dimensional view of the output stage base and the protective cover integrated structure of the utility model when forgetting to close the protective cover and the flexible hinge automatically rebounds;

[0022] Figure 5 This is a three-dimensional view of the crossbeam of the battery pack of the present utility model;

[0023] Figure 6 is Figure 5 explosion effect diagram of;

[0024] Figure 7 is the process flow diagram of installing the integrated structure of the output stage base and the protection cover to the battery pack crossbeam;

[0025] Reference numerals:

[0026] 1 Output stage base, 11 Base body, 111 Limit groove, 112 Limit buckle, 113 Cavity hole, 12 First base end plate, 13 Second base end plate, 131 Buckle groove, 14 Tab fixing hole, 15 Flange bolt,

[0027] 2 Protection cover, 21 Cover plate, 22 First top cover end plate, 23 Second top cover end plate, 231 Fixed buckle,

[0028] 3 Rotating shaft,

[0029] 4 Crossbeam body, 41 Base installation notch, 42 Limit protrusion, 421 First limit protrusion, 422 Second limit protrusion, 43 First side plate, 44 Second side plate, 45 Rib plate,

[0030] 5 First tab,

[0031] 6 Second tab. Detailed implementation manners

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0035] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0036] Reference to "one embodiment" or "some embodiments" etc. described in the specification of the present application means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way. The terms "comprise", "include", "have" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in another way.

[0037] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Embodiment 1

[0039] As Figures 1 to 4 shown in the integrated structure of the output stage base and the protection cover, which includes an output stage base 1. The output stage base 1 includes a base body 11 fixed on the battery pack crossbeam. The base body 11 is integrally injection-molded, and a plurality of cavity holes 113 are provided on the body. The base body 11 is a block structure, and a first base end plate 12 and a second base end plate 13 are provided at both ends of the top surface. The top of the first base end plate 12 is rotatably connected to a protection cover 2 through a rotating shaft 3. The rotating shaft 3 is a flexible hinge. A bar piece fixing hole 14 is provided on the top surface of the base body 11. The bar piece fixing hole 14 is a screw hole, and a flange bolt 15 is provided in the bar piece fixing hole 14. Limiting grooves 111 and limiting buckles 112 that penetrate through the base body 11 are provided on both end faces of the base body 11. The limiting buckle 112 is an elastic tongue. The limiting buckle 112 is provided below the limiting groove 111.

[0040] The protective cover 2 includes a cover plate 21. At both ends of the bottom of the cover plate 21, a first top cover end plate 22 and a second top cover end plate 23 are fixed. The bottom of the first top cover end plate 22 is hinged to the base end plate 12 through a flexible hinge. At the bottom of the second top cover end plate 23, there is a fixed buckle 231. On the top of the second base end plate 13, a buckle groove 131 is opened. On the inner wall of the buckle groove 131, a limit hole 132 is opened which is matched with the fixed buckle 231. Through the flexible hinge, the protective cover 2 can automatically rebound to the mold opening position, which can avoid the loss of the protective cover 2 during the maintenance process, or the exposed bare chip due to forgetting to close the protective cover 2. As Figure 4 , although the buckle is not fully buckled, at this time the protective cover 2 is in a nearly closed state, avoiding the direct exposure of the high-voltage chip.

[0041] The integrated structure of the output stage base 1 and the protective cover 2 is an integral whole and can be formed by secondary injection molding. The protective cover 2 has the functions of opening and closing and buckling, and requires a material with relatively weak stiffness but strong toughness. In this embodiment, PA6 is used; the output stage base 1 has the functions of fixing the output stage and locking the flange bolts 15, and requires a material with relatively strong stiffness. In this embodiment, PA66+GF30 is used. The structures of the two different materials can be combined into one by secondary injection molding. The material of the flexible hinge 24 part is the same as that of the protective cover 2, which is PA6, because the flexible hinge needs to deform when opening and closing the protective cover 2, and the selected material should not be too hard.

[0042] Embodiment 2

[0043] As Figures 5 to 6 shown in the battery pack crossbeam, it includes a crossbeam main body 4. At the top of the crossbeam main body 4, a base installation notch 41 is provided. Inside the base installation notch 41, an integrated structure of the output stage base and the protective cover as in Embodiment 1 is installed. The chip fixing hole 14 is successively fixed with a first chip 5 and a second chip 6 from top to bottom through a flange bolt 15.

[0044] The crossbeam main body 4 is in a long strip shape and a groove is opened in the middle of the top surface. One end of the groove penetrates through the other end but does not penetrate to form the base installation notch 41; on both side surfaces of the base installation notch 41, a limit convex block 42 and a rabbet structure are respectively arranged. The limit convex block 42 is used to cooperate with the limit groove 111 to limit the base main body 11; the rabbet structure is used to cooperate with the limit buckle 112 to limit the base main body 11. The crossbeam main body 4 includes a first side plate 43 and a second side plate 44 which are oppositely arranged. The groove forming the base installation notch 41 penetrates through the first side plate 43. Between the first side plate 43 and the second side plate 44 is a cavity and a rib plate 45 is arranged in the cavity. The inner side surface of the first side plate 43 forms the rabbet structure. The limit convex block 42 includes two relatively arranged first limit convex blocks 421 and two relatively arranged second limit convex blocks 422. The first limit convex block 421 is arranged at the notch of the first side plate 43, and the second limit convex block 422 is arranged on the second side plate 44.

[0045] As Figure 7 shown, the output stage base 1 horizontally pushes the crossbeam main body 4. Through the cooperation of the first limiting bump 421 and the second limiting bump 422 with the limiting groove 111, and the limiting buckle 112 with the inner wall of the side plate of the crossbeam main body 4, the output stage base 1 will not come off when installed on the crossbeam main body 4, and the degrees of freedom in six directions are all zero.

[0046] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An integrated structure of an output stage base and a protective cover, characterized in that: The output stage base (1) comprises an output stage base (1), wherein the output stage base (1) comprises a base body (11) fixed on a cross beam of a battery pack, the base body (11) is a block structure and is provided with a first base end plate (12) and a second base end plate (13) at both ends of the top surface, the top of the first base end plate (12) is rotatably connected to a protective cover (2) via a rotating shaft (3), the top surface of the base body (11) is provided with a tab fixing hole (14), and both end surfaces of the base body (11) are provided with a limiting groove (111) and a limiting buckle (112) penetrating the base body (11).

2. The integrated structure of the output stage base and the protective cover according to claim 1, characterized in that: The protective cover (2) comprises a cover plate (21), a first top cover end plate (22) and a second top cover end plate (23) being fixed at both ends of the bottom of the cover plate (21), the rotating shaft (3) being a flexible hinge, and the bottom of the first top cover end plate (22) being hinged to the first base end plate (12) via a flexible hinge.

3. The integrated structure of the output stage base and the protective cover according to claim 2, characterized in that: A fixing buckle (231) is provided at the bottom of the second top cover end plate (23), a buckle groove (131) is provided at the top of the second base end plate (13), and a limiting hole (132) matching with the fixing buckle (231) is provided on the inner wall of the buckle groove (131).

4. The integrated structure of the output stage base and the protective cover according to claim 1, characterized in that: The bar fixing hole (14) is a screw hole, and a flange bolt (15) is arranged in the bar fixing hole (14).

5. The integrated structure of the output stage base and the protective cover according to claim 1, characterized in that: The base body (11) is integrally injection-molded, and a plurality of cavity holes (113) are provided on the body.

6. The integrated structure of the output stage base and the protective cover according to claim 1, characterized in that: The limiting buckle (112) is an elastic buckle.

7. The integrated structure of the output stage base and the protective cover according to claim 1, characterized in that: The limiting buckle (112) is arranged below the limiting groove (111).

8. A battery pack beam, characterized in that: It comprises a crossbeam body (4), a base installation notch (41) is provided on the top of the crossbeam body (4), the output stage base and protective cover integrated structure as claimed in claim 1 is installed in the base installation notch (41), and a first bar piece (5) and a second bar piece (6) are fixed in the bar piece fixing hole (14).

9. The battery pack crossbeam according to claim 8, characterized in that: The crossbeam body (4) is in the shape of an elongated block and has a groove in the middle of the top surface, and one end of the groove passes through the other end and does not pass through to form a base installation notch (41); limiting protrusions (42) and stop structures are respectively provided on both side surfaces of the base installation notch (41), and the limiting protrusions (42) are used to cooperate with the limiting grooves (111) to limit the base body (11); the stop structure is used to cooperate with the limiting buckle (112) to limit the base body (11).

10. The battery pack crossbeam according to claim 9, characterized in that: The crossbeam body (4) comprises a first side plate (43) and a second side plate (44) which are arranged opposite to each other, a groove constituting the base mounting notch (41) passes through the first side plate (43), a cavity is formed between the first side plate (43) and the second side plate (44), and a rib plate (45) is arranged in the cavity, and the inner side surface of the first side plate (43) constitutes a stop structure.

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