An energy storage device and electric engineering machinery

Abstract

This utility model discloses an energy storage device and electric engineering machinery, including a first battery bracket, with a plurality of second battery brackets arranged vertically below the first battery bracket. The first battery bracket is rectangular plate-shaped, with a plurality of first mounting holes arranged front-to-back on its left and right side edges, and a plurality of second mounting holes arranged left-to-right on its front and rear side edges. The second battery brackets are rectangular boxes with their openings facing upwards, with a plurality of third mounting holes arranged front-to-back on the left and right side edges of their top, a plurality of fourth mounting holes arranged front-to-back on the left and right side edges of their bottom, and a plurality of fifth mounting holes arranged left-to-right on the front and rear side edges of their bottom. This utility model features multi-layer stacking installation, a compact structure, and facilitates assembly and subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to an energy storage device and electric engineering machinery. Background Technology

[0002] Driven by both environmental pressures and the need for lower operating costs, the electrification of construction machinery is an inevitable trend. Electric construction machinery is characterized by high power consumption, long continuous operating times, and the need for large battery capacities. Furthermore, the harsh operating conditions of construction machinery, including significant impacts and vibrations, affect its reliability and can even shorten battery life and compromise operational safety. Therefore, developing a compact, easy-to-install, and highly reliable energy storage device is essential.

[0003] With the development of battery technology, the energy density of battery packs is getting higher and higher, especially the zero-boundary battery pack (bottom mounting), which physically pushes the volumetric energy density of the battery pack to the limit. The mounting threaded holes of the zero-boundary battery pack are located at the bottom of the battery pack, which requires the battery pack to be fixed and installed with the bracket of that layer before being assembled into a whole. This makes the existing battery brackets unsuitable. In addition, the whole vehicle has put forward higher requirements for the volumetric energy density of the new battery system, and the compactness of the battery bracket is also of paramount importance.

[0004] Existing energy storage devices, as disclosed in the technology, have each battery pack or each layer as an independent shock absorber, resulting in complex structures, high costs, poor overall structural stability, and low reliability. Utility Model Content

[0005] The purpose of this utility model is to provide an energy storage device and electric engineering machinery to solve the technical problems of complex structure and low compactness of existing energy storage devices.

[0006] To achieve the above objectives, the present invention provides an energy storage device, including a first battery bracket, with a plurality of second battery brackets arranged vertically below the first battery bracket. The first battery bracket is rectangular in shape, with a plurality of first mounting holes arranged front-to-back on its left and right sides, and a plurality of second mounting holes arranged left-to-right on its front and rear sides. The second battery brackets are rectangular boxes with their openings facing upwards, with a plurality of third mounting holes arranged front-to-back on the left and right sides of the top of the second battery brackets, and a plurality of fourth mounting holes arranged front-to-back on the left and right sides of the bottom of the second battery brackets. The bottom of the frame has several fifth mounting holes arranged along the left and right sides on both the front and rear edges. The third and fourth mounting holes are located outside the second battery bracket. The first mounting hole is coaxially arranged with the third and fourth mounting holes. The fifth mounting hole is located inside the second battery bracket. The first mounting hole is bolted to the third mounting hole below it, and the fourth mounting hole is bolted to the third mounting hole below it. A first battery pack is provided above the first battery bracket. The first battery pack is installed with the second mounting hole using screws. A second battery pack is provided inside the second battery bracket. The second battery pack is installed with the fifth mounting hole using screws.

[0007] Furthermore, the front and rear edges of the first battery holder are provided with upwardly protruding strip plates, the first battery pack is located between the two strip plates, and the second mounting hole is located between the two strip plates.

[0008] Furthermore, the length of the strip extends left and right, and the two strips are provided with two first lifting holes arranged left and right.

[0009] Furthermore, the first battery bracket is provided with a first weight reduction port, and four of the first weight reduction ports are arranged in a grid pattern between the first mounting hole and the second mounting hole.

[0010] Furthermore, the top left and right sides of the second battery bracket are provided with horizontally outwardly bent plate edges, the length of which extends along the front and back, and the third mounting hole is provided on the plate edge.

[0011] Furthermore, the outer walls on the left and right sides of the second battery bracket are provided with a number of reinforcing ribs arranged in a front-to-back manner, and the length of the reinforcing ribs extends vertically.

[0012] Furthermore, the front sidewall of the second battery bracket is provided with two process openings distributed along the left and right sides, the process openings corresponding to the panel positions on the second battery pack, and the left and right ends of the front and rear sidewalls of the second battery bracket are provided with second lifting holes.

[0013] Furthermore, the bottom of the second battery bracket is provided with a second weight reduction opening, and four of the second weight reduction openings are arranged in a grid pattern inside the second battery bracket.

[0014] Furthermore, a shock-absorbing pad is provided between the fourth mounting hole and the bolt on one of the second battery brackets.

[0015] This utility model also provides an electric engineering machinery, including an electric engineering machinery body and an energy storage device as described in any of the above technical solutions, wherein the energy storage device is disposed on the electric engineering machinery body.

[0016] In summary, the technical solution of this utility model has the following beneficial effects: The structural design of this utility model is reasonable. By setting a first battery bracket, several second battery brackets are arranged vertically below the first battery bracket. The first battery bracket is rectangular, with several first mounting holes arranged front-to-back on its left and right sides, and several second mounting holes arranged left-to-right on its front and rear sides. The second battery bracket is a rectangular box with its opening facing upwards. Several third mounting holes are arranged front-to-back on its top left and right sides, several fourth mounting holes are arranged front-to-back on its bottom left and right sides, and several fifth mounting holes are arranged left-to-right on its bottom front and rear sides. The third and fourth mounting holes are located outside the second battery bracket, and the first, third, and fourth mounting holes are coaxially arranged. The fifth mounting holes are located on the second battery bracket... Internally, in practical applications, one or more first battery packs can be placed on top of the first battery bracket, and then the first battery packs can be screwed onto the second mounting holes to form the first component. Next, one or more second battery packs can be placed inside the second battery bracket, and then the second battery packs can be screwed onto the fifth mounting holes to form the second component. This process can be repeated to form a third component… (the specific number can be selected according to actual needs). Finally, the first, second, and third components… (the specific number can be selected according to actual needs) are stacked, that is, the first mounting hole of the first component is bolted onto the third mounting hole of the second component, the fourth mounting hole of the second component is bolted onto the third mounting hole of the third component, and so on (the specific number can be selected according to actual needs). Therefore, this utility model features multi-layer stacking, a simple overall structure, and the top of the second battery bracket is a box opening, reducing the insulation thickness, resulting in a compact structure that facilitates assembly and future maintenance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the first battery holder and the two second battery holders of this utility model, separated. Explanation of reference numerals in the attached drawings: First battery bracket (1), second battery bracket (2), bolt (3), first battery pack (4), second battery pack (5), shock-absorbing pad (6), screw (7); first mounting hole (101), second mounting hole (102), strip plate (103), first weight-reducing opening (104), first lifting hole (105); third mounting hole (201), fourth mounting hole (202), fifth mounting hole (203), reinforcing rib (204), process opening (205), second weight-reducing opening (206), plate edge (207), second lifting hole (208). Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0019] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 In this observation, the observer's left rear side is designated as front, the observer's right front side as rear, the observer's left front side as right, the observer's right rear side as left, the observer's top as up, and the observer's bottom as down. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate the orientation or positional relationship based on the accompanying drawings. These are merely for the purpose of clearly describing this utility model and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0020] See Figures 1 to 3This embodiment provides an energy storage device, including a first battery bracket 1. Several second battery brackets 2 are arranged vertically below the first battery bracket 1. The first battery bracket 1 is rectangular in shape, with several first mounting holes 101 arranged front-to-back on its left and right sides, and several second mounting holes 102 arranged left-to-right on its front and rear sides. The second battery brackets 2 are rectangular boxes with their openings facing upwards. Several third mounting holes 201 are arranged front-to-back on the left and right sides of the top of the second battery brackets 2, and several fourth mounting holes 202 are arranged front-to-back on the left and right sides of the bottom of the second battery brackets 2. The second battery brackets 2 also have several third mounting holes 201 arranged front-to-back on the front and rear sides of their bottom. Several fifth mounting holes 203 are arranged along the left and right sides. The third mounting holes 201 and the fourth mounting holes 202 are located on the outside of the second battery bracket 2. The first mounting hole 101 is coaxially arranged with the third mounting holes 201 and the fourth mounting holes 202. The fifth mounting holes 203 are located inside the second battery bracket 2. The first mounting hole 101 is installed with the third mounting hole 201 below it by bolts 3. The fourth mounting hole 202 is installed with the third mounting hole 201 below it by bolts 3. A first battery pack 4 is provided above the first battery bracket 1. The first battery pack 4 is installed with the second mounting hole 102 by screws 7. A second battery pack 5 is provided inside the second battery bracket 2. The second battery pack 5 is installed with the fifth mounting hole 203 by screws 7. Function: In practical applications, one or more first battery packs can be placed on top of the first battery bracket, and then the first battery packs can be screwed onto the second mounting holes to form the first component. Next, one or more second battery packs can be placed inside the second battery bracket, and then the second battery packs can be screwed onto the fifth mounting holes to form the second component. This process can be repeated to form a third component… (the specific number can be selected according to actual needs). Finally, the first, second, and third components… (the specific number can be selected according to actual needs) can be stacked, that is, the first mounting hole of the first component can be bolted onto the third mounting hole of the second component, the fourth mounting hole of the second component can be bolted onto the third mounting hole of the third component, and so on (the specific number can be selected according to actual needs). Analysis shows that this utility model features multi-layer stacking, a simple overall structure, and the top of the second battery bracket is a box opening, reducing the insulation thickness, resulting in a compact structure that facilitates assembly and future maintenance.

[0021] Specifically, the front and rear edges of the first battery bracket 1 are provided with upwardly protruding strip plates 103, the first battery pack 4 is located between the two strip plates 103, and the second mounting hole 102 is located between the two strip plates 103. Function: The strip plates 103 facilitate the setting of structures such as lifting holes.

[0022] Specifically, the length of the strip plate 103 extends left and right, and the two strip plates 103 are provided with two first lifting holes 105 arranged left and right. Function: The first lifting holes 105 facilitate the lifting of the first battery bracket 1.

[0023] Specifically, the first battery holder 1 is provided with first weight-reducing openings 104, and four first weight-reducing openings 104 are arranged in a grid pattern between the first mounting hole 101 and the second mounting hole 102. Function: The first weight-reducing openings 104 can reduce the weight of the first battery holder 1.

[0024] Specifically, the top left and right edges of the second battery bracket 2 are provided with horizontally outwardly bent plate edges 207, the length of which extends front and back, and the third mounting hole 201 is provided on the plate edge 207. Function: The plate edge 207 is provided to facilitate the vertical alignment of the third mounting hole 201 and the fourth mounting hole 202.

[0025] Specifically, the outer walls of the left and right sides of the second battery bracket 2 are provided with several reinforcing ribs 204 arranged front to back, and the length of the reinforcing ribs 204 extends vertically. Function: The reinforcing ribs can support the upper and lower edges of the frame of the second battery bracket 2.

[0026] Specifically, the front side wall of the second battery bracket 2 is provided with two process openings 205 distributed along the left and right sides. The process openings 205 correspond to the positions of the panels on the second battery pack 5. The left and right ends of the front and rear side walls of the second battery bracket 2 are provided with second lifting holes 208. Function: The two process openings 205 facilitate operation on the panels of the two second battery packs 5, and the second lifting holes 208 facilitate lifting the second battery bracket 2.

[0027] Specifically, the bottom of the second battery holder 2 is provided with a second weight-reducing opening 206, and four second weight-reducing openings 206 are arranged in a grid pattern inside the second battery holder 2. Function: The second weight-reducing openings 206 can reduce the weight of the second battery holder 2.

[0028] Specifically, a shock-absorbing pad 6 is provided between the fourth mounting hole 202 and the bolt 3 on one of the second battery brackets 2. Function: The second battery bracket 2, which is a layer of multi-layer stacked structures (which can be the bottom layer or an intermediate layer), can be installed with the frame of electric engineering machinery by providing a shock-absorbing pad, thereby achieving overall shock absorption.

[0029] Preferably, two first battery packs 4 are placed on the first battery bracket 1, and two second battery packs 5 are accommodated inside the second battery bracket 2. The frame and base plate of the second battery bracket 2 can be installed with bolts.

[0030] This utility model also provides an electric construction machinery, including a main body of the electric construction machinery and an energy storage device according to any of the above-mentioned technical solutions, wherein the energy storage device is disposed on the main body of the electric construction machinery. Application: The energy storage device of this utility model can be applied to all electric construction machinery: heavy trucks, wide-body vehicles, excavators, loaders, bulldozers, backhoe loaders, etc. More specifically, the electric construction machinery also includes a battery system, controller, motor, etc.

[0031] In summary, the improvement results are as follows: 1. Overall shock absorption, simple structure, and low cost; 2. The structure is compact and reliable, making effective use of the vehicle space to maximize the amount of electricity and improve the vehicle's range.

[0032] 3. Multi-layer stacking installation facilitates assembly and subsequent maintenance and repair.

[0033] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An energy storage device, comprising a first battery support (1), characterized in that: Below the first battery bracket (1) are several second battery brackets (2) arranged vertically. The first battery bracket (1) is rectangular in shape. The left and right sides of the first battery bracket (1) are provided with several first mounting holes (101) arranged front and back. The front and back sides of the first battery bracket (1) are provided with several second mounting holes (102) arranged left and right. The second battery bracket (2) is rectangular in shape with the opening facing upward. The left and right sides of the top of the second battery bracket (2) are provided with several third mounting holes (201) arranged front and back. The left and right sides of the bottom of the second battery bracket (2) are provided with several fourth mounting holes (202) arranged front and back. The front and back sides of the bottom of the second battery bracket (2) are provided with several fifth mounting holes (203) arranged left and right. The third mounting holes (201), the... The fourth mounting hole (202) is located outside the second battery bracket (2). The first mounting hole (101) is coaxially arranged with the third mounting hole (201) and the fourth mounting hole (202). The fifth mounting hole (203) is located inside the second battery bracket (2). The first mounting hole (101) is installed with the third mounting hole (201) below it by bolts (3). The fourth mounting hole (202) is installed with the third mounting hole (201) below it by bolts (3). A first battery pack (4) is provided above the first battery bracket (1). The first battery pack (4) is installed with the second mounting hole (102) by screws (7). A second battery pack (5) is provided inside the second battery bracket (2). The second battery pack (5) is installed with the fifth mounting hole (203) by screws (7).

2. The energy storage device according to claim 1, characterized in that: The first battery bracket (1) has upward protruding strip plates (103) on its front and rear sides, the first battery pack (4) is located between the two strip plates (103), and the second mounting hole (102) is located between the two strip plates (103).

3. The energy storage device according to claim 2, characterized in that: The length of the strip plate (103) extends from left to right, and the two strip plates (103) are provided with two first lifting holes (105) arranged from left to right.

4. The energy storage device according to claim 2, characterized in that: The first battery bracket (1) is provided with a first weight reduction port (104), and the four first weight reduction ports (104) are arranged in a grid shape between the first mounting hole (101) and the second mounting hole (102).

5. The energy storage device according to claim 1, characterized in that: The top left and right sides of the second battery bracket (2) are provided with horizontally outwardly bent plate edges (207), the length of the plate edges (207) extends along the front and back, and the third mounting hole (201) is provided on the plate edges (207).

6. The energy storage device according to claim 5, characterized in that: The outer walls on the left and right sides of the second battery bracket (2) are provided with a number of reinforcing ribs (204) arranged in a front-to-back manner, and the length of the reinforcing ribs (204) extends in the vertical direction.

7. The energy storage device according to claim 1, characterized in that: The front side wall of the second battery bracket (2) is provided with two process openings (205) distributed along the left and right sides. The process openings (205) correspond to the panel positions on the second battery pack (5). The left and right ends of the front and rear side walls of the second battery bracket (2) are provided with second lifting holes (208).

8. The energy storage device according to claim 1, characterized in that: The bottom of the second battery bracket (2) is provided with a second weight reduction port (206), and four second weight reduction ports (206) are arranged in a grid pattern inside the second battery bracket (2).

9. An energy storage device according to any one of claims 1 to 8, characterized in that: A shock-absorbing pad (6) is provided between the fourth mounting hole (202) on one of the second battery brackets (2) and the bolt (3).

10. An electric construction machinery, comprising an electric construction machinery body, characterized in that: It also includes the energy storage device according to any one of claims 1 to 9, wherein the energy storage device is disposed on the main body of the electric engineering machinery.

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