Battery box and energy storage equipment

Abstract

The utility model relates to a battery box and energy storage equipment, and relates to the technical field of new energy batteries. The utility model provides a battery box which comprises a lower box body, the lower box body comprises a bottom plate, a reinforcing part and boundary beams, the boundary beams are arranged on the two opposite side edges of the bottom plate, and the reinforcing part is arranged at the joint of the bottom plate and the boundary beams; the reinforcing part is solid, and a plurality of mounting holes for mounting the battery box are formed in the reinforcing part. According to the battery box, the solid reinforcing part is arranged at the joint of the bottom plate and the side beam, so that the risk of cracking of the side beam is avoided, and the overall strength of the battery box is also improved; meanwhile, the battery box is mounted on the placement frame through the mounting hole in the solid reinforcing part, and the solid reinforcing part is used for fixedly bearing the whole battery box, so that the battery box can be used under the working condition of a mine truck.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and more specifically, to a battery box and energy storage device. Background Technology

[0002] With the development of new energy technologies, battery technology has been widely adopted in vehicles. Electric mining trucks are mining trucks powered by electricity. Compared to fuel-powered trucks, electric mining trucks use cleaner energy, have superior power performance, and lower maintenance costs. The power of electric mining trucks comes from batteries. Due to the heavy weight and large load capacity of mining trucks, the required battery volume and number are far greater than those of ordinary electric trucks.

[0003] Currently, the commonly used standard C-type boxes are generally made of low-side beam profile boxes or stamped boxes; among them, the lower box adopts the low-side beam profile box design scheme.

[0004] The inventors discovered that current mining trucks use low-side battery packs, with the battery modules bonded to the lower casing using structural adhesive. While this type of low-side battery pack is suitable for the operating conditions of ordinary heavy trucks or buses, it cannot meet the requirements of mining trucks. The harsher operating conditions in mines cause structural failures in ordinary low-side battery packs. Utility Model Content

[0005] The purpose of this utility model is to provide a battery box and energy storage device, which improves the overall strength of the battery box by setting up a reinforcing part and avoids the risk of cracking of the side beams.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, this utility model proposes a battery box, comprising: a lower box body, the lower box body including a bottom plate, a reinforcing part and side beams, the side beams being provided on opposite sides of the bottom plate, the reinforcing part being provided at the connection between the bottom plate and the side beams; the reinforcing part being solid, and the reinforcing part being provided with a plurality of mounting holes for mounting the battery box.

[0008] Optionally, the side beam adopts a high side beam structure;

[0009] The reinforcing part extends upward along the outer wall of the side beam.

[0010] Optionally, the base plate is provided with flow channels;

[0011] The reinforcing part extends a solid extension along the base plate toward the flow channel, and the length of the extension is 10-30mm.

[0012] Optionally, the outer edge of the reinforcing part is connected to the side beam by a connector, one side of the connector is connected to the outer edge of the reinforcing part, and the other side is connected to the outer wall of the side beam, so that the reinforcing part, the side beam and the connector form a triangular cavity.

[0013] Optionally, the connector has a notch relative to the mounting hole, the notch being used to make room for the installation of the battery box.

[0014] Optionally, the side beam is provided with an energy-absorbing structure, which extends upward along the connection between the connector and the side beam to the top of the side beam;

[0015] The energy-absorbing structure has multiple energy-absorbing cavities arranged laterally along the energy-absorbing structure.

[0016] Optionally, the lower box body further includes a front panel and a rear panel, the front panel is provided on the first side of the bottom plate, the rear panel is provided on the third side of the bottom plate, and the side beams are provided opposite to the second and fourth sides of the bottom plate;

[0017] The bottom wall of the front bulkhead is connected to the top wall of the bottom plate, and both side walls of the front bulkhead are connected to the inner wall of the side beam.

[0018] The bottom wall of the rear panel is connected to the top wall of the bottom plate, and both side walls of the rear panel are connected to the inner wall of the side beam.

[0019] The front bulkhead is provided with a mounting opening for mounting the front electrical mounting plate.

[0020] Optionally, the front bulkhead and the rear bulkhead are fixed to the bottom plate by fasteners; the bottom plate is integrally formed with the reinforcing part and the side beam.

[0021] Optionally, the top of the side beam is provided with a cantilever side, and the cantilever side is provided with a plurality of first fixing holes;

[0022] The battery box includes an upper box body, and fixed sides extend outward from all four sides of the upper box body. The fixed sides are provided with a plurality of second fixing holes, and the first fixing holes and the second fixing holes are arranged opposite to each other.

[0023] Secondly, this utility model also proposes an energy storage device, comprising: a battery box as described in any of the above claims; a mounting part, wherein the side beam is fixed to the mounting part through the mounting hole.

[0024] The beneficial effects of the battery box and energy storage device provided in this embodiment of the present invention include:

[0025] By setting a solid reinforcing section at the connection between the base plate and the side beam, the risk of cracking of the side beam is avoided, and the overall strength of the battery box is improved. At the same time, the battery box is installed on the placement frame through the mounting holes on the solid reinforcing section. The solid reinforcing section fixes and supports the entire battery box, so that the battery box can meet the working conditions of mining trucks. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an exploded view of the battery box provided in this embodiment;

[0028] Figure 2 This is a structural schematic diagram of the lower housing provided in this embodiment;

[0029] Figure 3 This is a partial schematic diagram of the base plate, side beams, and reinforcement provided in this embodiment;

[0030] Figure 4 This is a partial sectional view of the base plate, side beams, and reinforcement provided in this embodiment.

[0031] Icons: 010-Battery box; 100-Lower box; 110-Base plate; 111-Flow channel; 120-Side beam; 121-Energy-absorbing structure; 122-Energy-absorbing cavity; 123-Cantilever side; 124-First fixing hole; 130-Reinforcing part; 131-Mounting hole; 132-Extension part; 140-Connector; 141-Notch; 142-Triangular cavity; 150-Front panel; 151-Mounting port; 160-Rear panel; 170-Front electrical mounting plate; 200-Upper box; 201-Second fixing hole; 300-Sealing ring; 400-Battery cell module; Detailed Implementation

[0032] The commonly used standard C-type box is generally made of box body with 120 low side beam profile or stamped box body; among them, the lower box body 100 adopts the design scheme of box body with 120 low side beam profile.

[0033] The inventors discovered that current mining trucks use low-side battery packs, with the battery modules bonded to the lower casing 100 by structural adhesive. While this type of low-side battery pack can meet the operating conditions of ordinary heavy trucks or buses, it cannot meet the requirements of mining trucks operating in mines. Due to the harsher operating conditions in mines, ordinary low-side battery packs are prone to structural failures.

[0034] To address the aforementioned problems, this utility model provides a battery box 010 and an energy storage device. By incorporating a reinforcing part 130, the overall strength of the battery box 010 is improved, avoiding the risk of cracking of the side beam 120, thereby mitigating the aforementioned issues.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0040] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0041] The following describes in detail the overall structure, working principle, and technical effects of the battery box 010 and energy storage device provided by this utility model through embodiments and in conjunction with the accompanying drawings.

[0042] Please refer to Figure 1 The battery box 010 provided by this utility model is used in the energy storage equipment of new energy vehicles.

[0043] Among these applications, new energy vehicles can be used in large vehicles such as heavy-duty trucks and mining trucks. Of course, this energy storage device can also be used in some harsher environments.

[0044] In this embodiment, please refer to Figure 1 The energy storage device includes a mounting rack (not shown in the figure) and multiple battery boxes 010, which are fixed to the mounting rack via mounting holes 131 on the side beam 120.

[0045] The rack is equipped with multiple mounting parts (not shown in the figure) to fix and install multiple battery boxes 010.

[0046] Please refer to Figure 2 The battery box 010 provided in this embodiment includes a lower box 100, which includes a bottom plate 110, a reinforcing part 130 and a side beam 120. Side beams 120 are provided on both opposite sides of the bottom plate 110. The reinforcing part 130 is provided at the connection between the bottom plate 110 and the side beam 120. The reinforcing part 130 is solid and has a plurality of mounting holes 131 for mounting the battery box 010.

[0047] It is understandable that the existing side beam 120 has an internal cavity structure, and the existing battery box is mounted on the placement frame via the side beam 120. During operation in the mine, the battery box 010 experiences severe vibration. The vibration amplitude points of the box are associated with the side beam 120 and the mounting points, making it prone to fatigue. This can lead to stress concentration and cracking of the existing side beam 120 due to vibration. This solution addresses this by incorporating a solid reinforcing section 130 at the connection between the base plate 110 and the side beam 120. This design avoids the risk of cracking in the side beam 120 and improves the overall strength of the battery box 010. Simultaneously, the battery box 010 is mounted on the placement frame via mounting holes 131 on the solid reinforcing section 130. The solid reinforcing section 130 provides fixed support for the entire battery box 010, ensuring it meets the operating conditions of the mine truck.

[0048] In this embodiment, please refer to Figure 1 The battery box 010 includes a lower box 100.

[0049] In this embodiment, please refer to Figure 2The lower box 100 includes a bottom plate 110 and two side beams 120. The bottom plate 110 is a rectangular plate structure, and side beams 120 are provided on both opposite sides of the bottom plate 110. Reinforcing parts 130 are provided at the connection between the two sides of the bottom plate 110 and the two side beams 120.

[0050] In this embodiment, please refer to Figure 2 and Figure 3 The reinforcing part 130 is solid; the reinforcing part 130 is provided with multiple mounting holes 131 for mounting the battery box 010, and the mounting holes 131 vertically penetrate the reinforcing part 130.

[0051] Specifically, the battery box 010 is fixed to the placement frame by bolts passing through the mounting holes 131 of the reinforcing parts 130 on both sides.

[0052] In this embodiment, please refer to Figure 3 The base plate 110 has a flow channel 111 for circulating coolant, so that the base plate 110 can liquid cool the battery module in the battery box 010. Since the flow channel 111 is a hollow cavity, when the battery box 010 vibrates, stress concentration will occur at the connection between the flow channel 111 and the reinforcing part 130, which may cause damage to the battery box 010.

[0053] Therefore, in this embodiment, please refer to Figure 3 and Figure 4 The reinforcing part 130 extends a solid extension 132 along the bottom plate 110 toward the flow channel 111, and the length of the extension 132 is 10-30mm.

[0054] It is understandable that extending the reinforcement 130 into the flow channel 111 to form the extension 132 can further increase the connection strength between the two sides of the base plate 110 and the side beam 120, and avoid stress concentration at the connection between the flow channel 111 and the reinforcement 130, which could cause damage to the battery box 010.

[0055] Optionally, the length of the extension 132 can be 10mm, 15mm, 20mm, 25mm, or 30mm, etc.

[0056] In this embodiment, both side beams 120 adopt a high side beam 120 structure. The reinforcing part 130 extends upward along the outer wall of the side beam 120, which can enhance the strength of the side beam 120.

[0057] In this embodiment, please refer to Figure 3 The outer edge of the reinforcing part 130 is connected to the side beam 120 through the connector 140. One side of the connector 140 is connected to the outer edge of the reinforcing part 130, and the other side is connected to the outer wall of the side beam 120, so that the reinforcing part 130, the side beam 120 and the connector 140 form a triangular cavity 142.

[0058] Among them, the connector 140 is a connecting plate structure. The connecting plate, the reinforcing part 130 and the side beam 120 form a triangular cavity 142. The connecting plate can share the force of the reinforcing part 130 and the bottom plate 110. At the same time, this arrangement can enhance the strength of the side beam 120 and further enhance the overall strength of the battery box 010.

[0059] For further details, please refer to Figure 3 The connector 140 has a notch 141 relative to the mounting hole 131. The notch 141 is used to make room for the installation of the battery box 010 so that the bolt can pass through the notch 141 and be fixed to the mounting bracket through the mounting hole 131.

[0060] In this embodiment, please refer to Figure 3 and Figure 4 An energy-absorbing structure 121 is provided on the side beam 120. The energy-absorbing structure 121 extends upward to the top of the side beam 120 along the connection between the connector 140 and the side beam 120. Multiple energy-absorbing cavities 122 are provided inside the energy-absorbing structure 121. The energy-absorbing cavities 122 are arranged laterally along the energy-absorbing structure 121.

[0061] The cross-sectional shape of the energy-absorbing cavity 122 can be selected according to actual conditions. For example, please refer to... Figure 4 The energy-absorbing structure 121 is located near the connector 140. Since the connector 140 and the side beam 120 are set at an angle, the cross-section of the energy-absorbing cavity 122 at this location is a triangular or rhomboid structure. The portion of the energy-absorbing structure 121 that extends along the side beam 120 toward the top of the side beam 120 can have a rectangular cross-section for its energy-absorbing cavity 122.

[0062] The energy-absorbing structure 121 is set to be relatively narrow so that it can make way for the installation space of the battery box 010 in conjunction with the notch 141.

[0063] Understandably, the energy-absorbing structure 121 can share the stress of the reinforcing part 130 and the base plate 110. This arrangement can further enhance the strength of the side beam 120 and further enhance the overall strength of the battery box 010.

[0064] In this embodiment, please refer to Figure 3 and Figure 4 The top of the side beam 120 is provided with a cantilever side 123. The cantilever side 123 has an L-shaped structure and extends outward along the side beam 120. The cantilever side 123 is provided with a plurality of first fixing holes 124. The first fixing holes 124 are used to fix with the second fixing holes 201 of the upper box 200.

[0065] In this embodiment, the base plate 110 is integrally formed with the reinforcing part 130 and the side beam 120.

[0066] In this embodiment, the lower housing 100 also includes a front panel 150 and a rear panel 160.

[0067] In this embodiment, please refer to Figure 2 The base plate 110 includes a first side, a second side, a third side, and a fourth side. The first side and the third side are arranged opposite each other, and the second side and the fourth side are arranged opposite each other. Two side beams 120 are respectively arranged on the second side and the fourth side. The front panel 150 is arranged opposite each other on the first side, and the rear panel 160 is arranged opposite each other on the third side.

[0068] Specifically, the bottom wall of the front bulkhead 150 is connected to the top wall of the bottom plate 110, and both side walls of the front bulkhead 150 are connected to the inner wall of the side beam 120; the bottom of the front bulkhead 150 is provided with a first fixing part, and the first fixing part is provided with a fixing hole, and the front bulkhead 150 is fixed to the bottom plate 110 by a fastener passing through the fixing hole.

[0069] The front bulkhead 150 is provided with a mounting opening 151, which is used to install the front electrical mounting plate 170.

[0070] Specifically, the bottom wall of the rear panel 160 is connected to the top wall of the bottom plate 110, and both side walls of the rear panel 160 are connected to the inner wall of the side beam 120; the bottom of the rear panel 160 is provided with a second fixing part, and the second fixing part is provided with fixing holes, and the rear panel 160 is fixed to the bottom plate 110 by fasteners passing through the fixing holes.

[0071] Alternatively, the fastener can be a threaded fastener such as a bolt or screw.

[0072] The rear panel 160 is at the same height as the two side beams 120, and the front panel 150 is higher than the two side beams 120; the upper box 200 can be configured to match the part of the front panel 150 that is higher.

[0073] In this embodiment, please refer to Figure 2 The top of both the front panel 150 and the rear panel 160 extends outward with L-shaped cantilever edges 123, and the cantilever edges 123 are provided with multiple first fixing holes 124; the first fixing holes 124 are used to fix with the second fixing holes 201 of the upper box 200.

[0074] In this embodiment, please refer to Figure 1 The battery box 010 includes an upper box 200.

[0075] In this embodiment, the upper housing 200 extends outward from all four sides to form a fixed edge, and the fixed edge is provided with a plurality of second fixing holes 201, with the first fixing hole 124 and the second fixing hole 201 being arranged opposite to each other.

[0076] Multiple threaded parts pass through the first fixing hole 124 and the second fixing hole 201 respectively to fix the upper housing 200 and the lower housing 100 together.

[0077] In this embodiment, please refer to Figure 1 A sealing ring 300 is also used to seal the connection between the upper box 200 and the lower box 100.

[0078] In this embodiment, please refer to Figure 1 The battery box 010 also includes a cell module 400. The upper box 200 and the lower box 100 are sealed together to form an internal mounting cavity, in which the cell module 400 is installed.

[0079] The battery cell module 400 includes multiple battery cells fixed together.

[0080] The working principle and process of the battery box 010 and energy storage device provided in this embodiment are as follows: The battery cell module is installed onto the lower box 100. The upper box 200, sealing ring 300, and lower box 100 are then installed and fixed to form the battery box 010. Finally, the reinforcing parts 130 on both sides of the battery box 010 are aligned with the mounting parts of the mounting bracket, ensuring that the mounting holes 131 of the reinforcing parts 130 correspond to the holes in the mounting parts. The boxes are then fixedly connected using bolts and nuts.

[0081] In summary, the battery box 010 and energy storage device provided in this embodiment of the present invention, by setting a solid reinforcing part 130, which is set at the connection between the bottom plate 110 and the side beam 120, avoids the risk of cracking of the side beam 120 and improves the overall strength of the battery box 010. At the same time, the battery box 010 is mounted on the placement frame through the mounting holes 131 on the solid reinforcing part 130. The solid reinforcing part 130 fixes and supports the entire battery box 010, so that the battery box 010 can meet the working conditions of mining trucks.

[0082] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A battery box, characterized in that, include: The lower housing includes a bottom plate, a reinforcing part, and side beams. The side beams are provided on both opposite sides of the bottom plate, and the reinforcing part is provided at the connection between the bottom plate and the side beams. The reinforcing part is solid and has multiple mounting holes for mounting the battery box.

2. The battery box according to claim 1, characterized in that, The side beam adopts a high side beam structure; The reinforcing part extends upward along the outer wall of the side beam.

3. The battery box according to claim 1, characterized in that, The base plate is provided with flow channels; The reinforcing part extends a solid extension along the base plate toward the flow channel, and the length of the extension is 10-30mm.

4. The battery box according to claim 1, characterized in that, The outer edge of the reinforcing part is connected to the side beam by a connector. One side of the connector is connected to the outer edge of the reinforcing part, and the other side is connected to the outer wall of the side beam, so that the reinforcing part, the side beam and the connector form a triangular cavity.

5. The battery box according to claim 4, characterized in that, The connector has a notch relative to the mounting hole, the notch being used to make room for the installation of the battery box.

6. The battery box according to claim 4, characterized in that, The side beam is provided with an energy-absorbing structure, which extends upward along the connection between the connector and the side beam to the top of the side beam; The energy-absorbing structure has multiple energy-absorbing cavities, which are arranged laterally along the energy-absorbing structure.

7. The battery box according to claim 1, characterized in that, The lower box also includes a front panel and a rear panel. The front panel is provided on the first side of the bottom plate, the rear panel is provided on the third side of the bottom plate, and the side beams are provided opposite to each other on the second and fourth sides of the bottom plate. The bottom wall of the front bulkhead is connected to the top wall of the bottom plate, and both side walls of the front bulkhead are connected to the inner wall of the side beam. The bottom wall of the rear panel is connected to the top wall of the bottom plate, and both side walls of the rear panel are connected to the inner wall of the side beam. The front bulkhead is provided with a mounting opening for mounting the front electrical mounting plate.

8. The battery box according to claim 7, characterized in that, The front panel and the rear panel are fixed to the bottom plate by fasteners; the bottom plate is integrally formed with the reinforcing part and the side beam.

9. The battery box according to claim 1, characterized in that, The top of the side beam is provided with a cantilever side, and the cantilever side is provided with a plurality of first fixing holes; The battery box includes an upper box body, and fixed sides extend outward from all four sides of the upper box body. The fixed sides are provided with a plurality of second fixing holes, and the first fixing holes and the second fixing holes are arranged opposite to each other.

10. An energy storage device, characterized in that, include: The battery box according to any one of claims 1-9; The mounting part is fixed to the side beam through the mounting hole.

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