Battery box

Abstract

The utility model relates to the technical field of energy storage, in particular to a battery box. The battery box comprises an upper frame assembly, a battery assembly and a lower frame assembly. The upper frame assembly comprises an upper frame unit; the upper frame unit is of a hollow frame structure. A plurality of battery mounting spaces are arranged in the hollow cavity of the upper frame unit at intervals along the length direction of the upper frame unit; the battery assembly is arranged in the battery mounting space; the battery assembly is detachably connected with the upper frame unit; a plurality of battery assemblies are arranged in one battery mounting space at intervals in the height direction of the battery mounting space; a battery assembly is arranged in each battery mounting space along the horizontal direction; the lower frame assembly comprises a lower frame unit, an electric connection unit and a temperature control unit; the lower frame unit is a hollow frame; the electric connection unit and the temperature control unit are arranged in the lower frame unit; the electric connection unit is electrically connected with the battery assembly through a cable; the temperature control unit is communicated with the battery assembly through a heat exchange pipeline. Therefore, the problem that the mine card battery box is easy to damage due to bumping is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of energy storage, in particular to a battery box. BACKGROUND

[0002] The current mine vehicle battery system generally adopts an integrated battery pack structure, and the technical scheme mainly comprises an upper frame assembly, a lower frame assembly and a battery assembly. The upper frame assembly is usually designed as a monolithic frame, and a single continuous cavity is formed inside for accommodating the battery assembly, and the rigid fixation with the lower frame assembly is achieved through welding or bolt connection. The patent document with the publication number CN117977089A provides a battery box, which comprises a frame body, a battery pack, a connector and a water cooling unit. The frame body has a main frame and a lower frame connected to the main frame, the main frame has an upper cavity, and the lower frame has a lower cavity; the battery pack is arranged in the upper cavity; the connector is arranged in the lower frame, and the connector is electrically connected with the battery pack; the water cooling unit is at least partially arranged in the lower cavity, and the water cooling unit is in communication with the cooling pipeline in the battery pack.

[0003] In the actual application of the above-mentioned monolithic battery box, due to the continuous vibration and impact load in the mine truck operating environment, the integrated battery pack has a large overall volume and a concentrated weight, which generates significant inertial force under dynamic working conditions, easily causing plastic deformation of the frame structure and displacement of the battery assembly, and causing collision and wear between the internal components of the battery pack. At the same time, the electrical connection unit and the temperature control unit in the lower frame assembly are fixed in the same sealed space, and when the battery assembly is displaced, interference with the cable and the heat exchange pipeline is easy to occur, which aggravates the risk of fatigue fracture at the connection part. SUMMARY

[0004] To solve the problem that the mine truck battery box is easily damaged by bumping, the utility model provides a battery box, which comprises:

[0005] An upper frame assembly, the upper frame assembly comprises an upper frame unit; the upper frame unit is arranged as a hollow frame structure; a plurality of battery mounting spaces are arranged in the hollow cavity of the upper frame unit along the length direction of the upper frame unit;

[0006] A battery assembly, the battery assembly is arranged in the battery mounting space; the battery assembly is detachably connected with the upper frame unit; a plurality of battery assemblies are arranged in one battery mounting space along the height direction thereof; one battery assembly is arranged in one battery mounting space along the horizontal direction thereof;

[0007] A lower frame assembly, the lower frame assembly comprises a lower frame unit, an electrical connection unit and a temperature control unit; the lower frame unit is arranged as a hollow frame; the electrical connection unit and the temperature control unit are arranged in the lower frame unit; the electrical connection unit is electrically connected with the battery assembly through a cable; the temperature control unit is in communication with the battery assembly through a heat exchange pipeline.

[0008] In some embodiments, the battery mounting space is arranged along the length direction of the upper frame unit, and at least three battery mounting spaces are arranged along the height direction of the battery mounting space.

[0009] In some embodiments, the battery assembly comprises a battery frame, a battery pack, and a temperature control plate; the battery frame is connected with the upper frame assembly; the battery pack is arranged in the battery frame and detachably connected with the battery frame; the battery pack and the electrical connection unit are electrically connected through the cable; the temperature control plate is detachably connected with the battery pack; the temperature control plate is in communication with the temperature control unit through the heat exchange pipeline; and the temperature control plate and the battery pack exchange heat.

[0010] In some embodiments, a pipeline mounting space is arranged near one side of the hollow chamber of the upper frame assembly along the length direction; and the cable passes through the pipeline mounting space to connect the battery pack and the electrical connection unit.

[0011] In some embodiments, the heat exchange pipeline passes through the pipeline mounting space to connect the temperature control plate and the temperature control unit; and the heat exchange pipeline and the cable are arranged at intervals.

[0012] In some embodiments, a refrigerant mounting space is arranged near the other side of the hollow chamber of the upper frame assembly along the length direction; and the heat exchange pipeline passes through the refrigerant mounting space to connect the temperature control plate and the temperature control unit.

[0013] In some embodiments, the upper frame unit comprises a first upper side frame, a second upper side frame, and an upper connecting beam; the first upper side frame and the second upper side frame are arranged at intervals; one end of the upper connecting beam is connected with the first upper side frame, and the other end is connected with the second upper side frame; the first upper side frame, the second upper side frame, and the upper connecting beam enclose the hollow chamber; and multiple upper connecting beams divide the hollow chamber into multiple battery mounting spaces.

[0014] In some embodiments, the upper frame assembly further comprises a hoisting unit and a sealing unit; the hoisting unit comprises a first hoisting frame, a second hoisting frame, and a top connecting beam; the hoisting unit is located above the upper frame unit and connected with the upper frame unit; the first hoisting frame and the second hoisting frame are arranged at intervals; one end of the top connecting beam is connected with the first hoisting frame, and the other end is connected with the second hoisting frame; the sealing unit comprises a top plate, a side plate, and a bottom plate; the top plate is connected with the top of the upper frame unit; the side plate is connected with the side of the upper frame unit; and the bottom plate is connected with the bottom of the lower frame unit.

[0015] In some embodiments, the lower frame unit comprises a first lower side frame, a second lower side frame, and a lower connecting beam; the lower frame unit is located below the upper frame unit and connected to the upper frame unit; the first lower side frame and the second lower side frame are arranged at intervals; one end of the lower connecting beam is connected to the first lower side frame, and the other end is connected to the second lower side frame; the first lower side frame, the second lower side frame, and the lower connecting beam form a hollow frame.

[0016] In some embodiments, the electrical connection unit comprises an electrical connection part and a controller; the electrical connection part and the controller are arranged in the hollow frame formed by the lower frame unit; the electrical connection part is electrically connected to the controller through the cable; and the controller is electrically connected to the battery pack through the cable.

[0017] To solve the problem that the mining truck battery box is easily damaged by bumps, the utility model has the following advantages:

[0018] By arranging the upper frame unit with a hollow frame structure in the upper frame assembly and arranging multiple battery mounting spaces along the length direction at intervals, the battery assembly is installed in the multiple-layer layout in the height direction and the single-layer layout in the horizontal direction of each battery mounting space in a detachable manner, so that the split modular arrangement of the battery unit is realized. The structure significantly reduces the weight of the battery assembly in the single battery mounting space, and the independent layout of each battery mounting space can limit the collision energy transmission range when the vehicle bumps, thereby effectively reducing the collateral damage between adjacent battery assemblies. The scheme separates and disperses the space and weight of the battery unit, reduces the overall inertia impact under the collision condition, avoids the spread of single faults through the independent installation structure, finally solves the easy damage problem of the integrated battery pack caused by the concentration of volume and weight, and maintains the reliable operation ability of the battery system. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structural schematic diagram of a battery box of an embodiment is shown;

[0020] Figure 2 An enlarged view of a part of the battery box is shown Figure 1

[0021] Figure 3 A front view schematic diagram of the battery box is shown Figure 1

[0022] Figure 4 A left view schematic diagram of the battery box is shown Figure 1

[0023] ​​​Label: 01 upper frame assembly; 11 upper frame unit; 111 first upper side frame; 112 second upper side frame; 113 upper connecting beam; 12 hoisting unit; 121 first hoisting frame; 122 second hoisting frame; 123 top connecting beam; 02 battery assembly; 21 battery frame; 22 battery pack; 23 temperature control plate; 03 lower frame assembly; 31 lower frame unit; 311 first lower side frame; 312 second lower side frame; 313 lower connecting beam; 32 electrical connection unit; 321 electrical connection part; 33 temperature control unit; 04 heat exchange pipeline; 05 cable. DETAILED DESCRIPTION

[0024] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be appreciated that these embodiments are discussed only with the intent to provide a more complete understanding of the disclosure, and are not intended to limit the scope of the disclosure in any way.

[0025] As used herein, the term "includes" and its variants are to be read as open-ended terms that mean "includes, but is not limited to." The term "based on" is to be construed as "based at least in part on." The terms "a" and "an" are to be construed as "at least one" The term "another" is to be construed as "at least one other." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and the like are used for clarity in describing the figures and are not to be construed as limiting the present application and its embodiments to any particular spatial arrangement or orientation. These terms are used primarily for the purpose of clarity in describing the application and its embodiments to those of ordinary skill in the art, and are not to be construed as limiting the present application and its embodiments to any particular spatial arrangement or orientation. Also, the terms "mount," "set," "provided with," "connected," "linked," should be given a broad interpretation. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first," "second," and the like are primarily used to distinguish different devices, elements or components (the specific types and structures of which can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0026] The battery box of the mine truck usually adopts an integrated battery pack 22 structure, and the overall volume of the battery box of the mine truck is large. When the mine truck operating environment has continuous jolting and vibration, and the weight of the battery box of the mine truck is concentrated in a single cavity, the inertial force generated by the movement of the vehicle acts on the inside of the battery pack 22, causing concentrated stress between the battery assembly 02 and the frame structure, which easily causes deformation of the frame structure and displacement of the battery assembly 02. Such structural defects significantly increase the probability of collision damage of the battery assembly 02 under dynamic working conditions, and it is difficult to perform local repair and replacement when a fault occurs, affecting the overall reliability of the battery system. In the present embodiment, a battery box is provided, as shown in Figure 1 The upper frame assembly 01 can include an upper frame unit 11, which can be provided as a hollow frame structure. A plurality of battery mounting spaces can be arranged at intervals in the hollow cavity of the upper frame unit 11 along the length direction of the upper frame unit 11. The hollow frame structure of the upper frame unit 11 can reduce the overall weight, and the plurality of battery mounting spaces arranged at intervals can form independent separate areas, thereby limiting the energy transmission range and reducing the loss when the mine truck jolts and collides.

[0027] The battery assembly 02 can be arranged in the battery mounting space. The battery assembly 02 can be detachably connected with the upper frame unit 11. A plurality of battery assemblies 02 can be arranged at intervals in a battery mounting space along the height direction thereof, and one battery assembly 02 can be arranged in a battery mounting space along the horizontal direction thereof. Through the combination of the multi-layer layout in the height direction and the single-layer layout in the horizontal direction, the split modular installation of the battery assembly 02 can be realized, the load concentration in a single battery mounting space is reduced, and thus when the vehicle jolts, the plurality of battery assemblies 02 will not collide with each other to cause a large amount of damage. In addition, the detachable connection structure can be disassembled for individual battery assemblies 02, facilitating local maintenance and replacement.

[0028] The lower frame assembly 03 can include a lower frame unit 31, an electrical connection unit 32, and a temperature control unit 33. The lower frame unit 31 can be provided as a hollow frame, and the electrical connection unit 32 and the temperature control unit 33 can be arranged in the hollow frame of the lower frame unit 31. The electrical connection unit 32 can be electrically connected with the battery assembly 02 through the cable 05 to charge and discharge the battery assembly 02; the temperature control unit 33 can be in communication with the battery assembly 02 through the heat exchange pipeline 04 to dissipate heat from the battery assembly 02. By integrating the electrical connection unit 32 and the temperature control unit 33 in the lower frame unit 31, the power transmission stability and the thermal management efficiency of the split battery assembly 02 can be maintained.

[0029] By setting multiple battery assemblies 02 and split battery mounting spaces, the single-point weight can be reduced, the overall inertial impact during a collision can be reduced, and the independent chamber structure can limit the spread of collision energy, thereby reducing the damage caused by the shaking of the battery box when the mining truck is jolted, and ultimately solving the problem of easy damage caused by the concentration of volume and weight of the integrated battery pack 22.

[0030] In the present embodiment, as shown in Figure 1 , the battery mounting space can be provided along the length direction of the upper frame unit 11. At least three battery assemblies 02 can be provided in the height direction of the battery mounting space. By increasing the number of battery mounting spaces in the length direction and the height direction, the weight distribution of the battery assemblies 02 is further dispersed, and the density of the battery assemblies 02 in a single chamber is reduced, thereby reducing the collision probability and the associated damage range between adjacent battery assemblies 02 when the vehicle is jolted.

[0031] In the present embodiment, as shown in Figure 2 , the battery assembly 02 can include a battery frame 21, a battery pack 22, and a temperature control plate 23. The battery frame 21 can be detachably connected to the upper frame assembly 01, thereby fixing the position of the battery assembly 02 so that it is not easily shaken, and also facilitating disassembly and assembly. The battery pack 22 can be provided in the battery frame 21 and detachably connected thereto. The battery pack 22 and the electrical connection unit 32 can be electrically connected by the cable 05, thereby enabling charging and discharging of the battery pack 22. The temperature control plate 23 can be detachably connected to the battery pack 22, and the temperature control plate 23 can be in communication with the temperature control unit 33 through the heat exchange pipeline 04, so that the temperature control unit 33 can exchange heat with the battery pack 22 through the temperature control plate 23. The detachable connection of the battery pack 22 and the temperature control plate 23 facilitates independent maintenance, and the heat exchange structure ensures temperature balance of the battery pack 22.

[0032] In the present embodiment, as shown in Figure 4 , the hollow chamber of the upper frame assembly 01 can be provided with a pipeline mounting space near one side in the length direction. The cable 05 can pass through the pipeline mounting space to connect the battery pack 22 and the electrical connection unit 32. Concentrating the cable 05 in the dedicated pipeline mounting space can reduce the installation complexity caused by the dispersion of the cable, and facilitate fault diagnosis and line maintenance.

[0033] In the present embodiment, as shown in Figure 3 , the heat exchange pipeline 04 can pass through the pipeline mounting space to connect the temperature control plate 23 and the temperature control unit 33. The heat exchange pipeline 04 and the cable 05 are arranged in a spaced manner. By arranging the cable 05 and the heat exchange pipeline 04 in the pipeline mounting space but maintaining a spaced arrangement, the space utilization is optimized while reducing the installation complexity, facilitating fault diagnosis and maintenance, and avoiding thermal interference or mechanical wear caused by contact between the heat exchange pipeline 04 and the cable 05.

[0034] In the embodiment, the hollow chamber of the upper frame assembly 01 can be provided with a refrigerant mounting space near the other side in the length direction. The heat exchange pipeline 04 can pass through the refrigerant mounting space to connect the temperature control plate 23 and the temperature control unit 33. That is, by separating the heat exchange pipeline 04 and the cable 05 on both sides of the battery pack 22, the physical isolation of the functional pipeline is realized, and the structural clarity is improved. The maintenance process can be simplified and the risk of misoperation is reduced.

[0035] In the embodiment, as shown in Figure 3 The upper frame unit 11 can include a first upper side frame 111, a second upper side frame 112, and an upper connecting beam 113. The first upper side frame 111 and the second upper side frame 112 can be arranged at intervals, and one end of the upper connecting beam 113 is connected to the first upper side frame 111 and the other end is connected to the second upper side frame 112, so that the first upper side frame 111, the second upper side frame 112, and the upper connecting beam 113 can enclose a hollow chamber. A plurality of upper connecting beams 113 can separate the hollow chamber into a plurality of battery mounting spaces.

[0036] The modular frame structure realizes chamber separation through the upper connecting beam 113, enhances the overall mechanical strength, and facilitates standardized production and assembly. In addition, the expandable frame design supports flexible adjustment of the number of battery mounting spaces.

[0037] In the embodiment, as shown in Figure 1 The upper frame assembly 01 can also include a hoisting unit 12 and a sealing unit. The hoisting unit 12 can include a first hoisting frame 121, a second hoisting frame 122, and a top connecting beam 123. The hoisting unit 12 can be located above and connected to the upper frame unit 11. The first hoisting frame 121 and the second hoisting frame 122 are arranged at intervals, and one end of the top connecting beam 123 is connected to the first hoisting frame 121 and the other end is connected to the second hoisting frame 122. The sealing unit can include a top plate, a side plate, and a bottom plate. The top plate is connected to the top of the upper frame unit 11; the side plate is connected to the side of the upper frame unit 11; and the bottom plate is connected to the bottom of the lower frame unit 31, so that the sealing unit can surround the battery assembly 02 and play a role in dustproof and anti-collision. In addition, the top plate, the side plate, and the bottom plate can be provided in multiple, so as to facilitate precise disassembly for local maintenance. The hoisting unit 12 can provide a stable lifting support point, and the multi-layer protection structure of the sealing unit prevents external environment from invading.

[0038] In the embodiment, as shown in Figure 1As shown, the lower frame unit 31 can include a first lower side frame 311, a second lower side frame 312, and a lower connecting beam 313. The lower frame unit 31 is located below the upper frame unit 11 and connected to the upper frame unit 11. The first lower side frame 311 and the second lower side frame 312 are arranged in a spaced manner, one end of the lower connecting beam 313 is connected to the first lower side frame 311, and the other end is connected to the second lower side frame 312, so that the first lower side frame 311, the second lower side frame 312, and the lower connecting beam 313 can form a hollow frame, and other structures can be arranged in the hollow frame.

[0039] The frame structure of the lower frame unit 31 and the upper frame unit 11 can form mechanical complementarity, disperse bearing stress, and provide a stable installation foundation for the internal unit.

[0040] In the embodiment, as shown, Figure 3 The electrical connection unit 32 can include an electrical connection part 321 and a controller. The electrical connection part 321 and the controller can be arranged in the hollow frame formed by the lower frame unit 31. The electrical connection part 321 can be electrically connected to the controller through the cable 05; and the controller can be electrically connected to the battery pack 22 through the cable 05.

[0041] Arranging the electrical connection part 321 and the controller in a separate chamber can avoid mechanical vibration interference on the power control unit.

[0042] It can be understood by those skilled in the art that the above-mentioned embodiments are specific cases for implementing the present disclosure, and in actual application, various changes can be made in form and details without departing from the scope of the present disclosure.

Claims

1. A battery box characterized by, The battery box comprises: an upper frame assembly comprising an upper frame unit; the upper frame unit is arranged as a hollow frame structure; a plurality of battery mounting spaces are arranged in the hollow chamber of the upper frame unit along the length direction of the upper frame unit; a battery assembly arranged in the battery mounting space; the battery assembly is detachably connected with the upper frame unit; a plurality of battery assemblies are arranged in one battery mounting space along the height direction thereof; one battery assembly is arranged in one battery mounting space along the horizontal direction thereof; a lower frame assembly comprising a lower frame unit, an electrical connection unit and a temperature control unit; the lower frame unit is arranged as a hollow frame; the electrical connection unit and the temperature control unit are arranged in the lower frame unit; the electrical connection unit is electrically connected with the battery assembly through a cable; the temperature control unit is in communication with the battery assembly through a heat exchange pipeline.

2. The battery box according to claim 1, wherein the battery mounting spaces are arranged at least three along the length direction of the upper frame unit; and at least three battery assemblies are arranged in one battery mounting space along the height direction thereof.

3. The battery box according to claim 1, wherein the battery assembly comprises a battery frame, a battery pack and a temperature control plate; the battery frame is connected with the upper frame assembly; the battery pack is arranged in the battery frame and detachably connected therewith; the battery pack and the electrical connection unit are electrically connected through the cable; the temperature control plate is detachably connected with the battery pack; the temperature control plate is in communication with the temperature control unit through the heat exchange pipeline; and the temperature control plate and the battery pack exchange heat.

4. The battery box according to claim 3, wherein a pipeline mounting space is arranged on one side of the hollow chamber of the upper frame assembly along the length direction; and the cable passes through the pipeline mounting space to connect the battery pack and the electrical connection unit.

5. The battery box according to claim 4, wherein the heat exchange pipeline passes through the pipeline mounting space to connect the temperature control plate and the temperature control unit; and the heat exchange pipeline and the cable are arranged in intervals.

6. The battery box according to claim 4, wherein a refrigerant mounting space is arranged on the other side of the hollow chamber of the upper frame assembly along the length direction; and the heat exchange pipeline passes through the refrigerant mounting space to connect the temperature control plate and the temperature control unit.

7. The battery box according to claim 1, wherein the upper frame unit comprises a first upper side frame, a second upper side frame and an upper connecting beam; the first upper side frame and the second upper side frame are arranged in intervals; one end of the upper connecting beam is connected with the first upper side frame and the other end thereof is connected with the second upper side frame; the first upper side frame, the second upper side frame and the upper connecting beam enclose the hollow chamber; and a plurality of the upper connecting beams divide the hollow chamber into a plurality of the battery mounting spaces.

8. The battery box according to claim 1, wherein The upper frame assembly further comprises a hoisting unit and a sealing unit; the hoisting unit comprises a first hoisting frame, a second hoisting frame and a top connecting beam; the hoisting unit is located above the upper frame unit and connected with the upper frame unit; the first hoisting frame and the second hoisting frame are arranged at intervals; one end of the top connecting beam is connected with the first hoisting frame, and the other end is connected with the second hoisting frame; the sealing unit comprises a top plate, a side plate and a bottom plate; the top plate is connected with the top of the upper frame unit; the side plate is connected with the side of the upper frame unit; and the bottom plate is connected with the bottom of the lower frame unit.

9. The battery box of claim 3, wherein, The lower frame unit comprises a first lower side frame, a second lower side frame and a lower connecting beam; the lower frame unit is located below the upper frame unit and connected with the upper frame unit; the first lower side frame and the second lower side frame are arranged at intervals; one end of the lower connecting beam is connected with the first lower side frame, and the other end is connected with the second lower side frame; and the first lower side frame, the second lower side frame and the lower connecting beam form a hollow frame.

10. The battery box of claim 9, wherein, The electrical connection unit comprises an electrical connection part and a controller; the electrical connection part and the controller are arranged in the hollow frame formed by the lower frame unit; the electrical connection part is electrically connected with the controller through the cable; and the controller is electrically connected with the battery pack through the cable.

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