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, a lower frame assembly, an electric connection assembly and a temperature control assembly. The upper frame assembly is arranged to be a hollow frame. The lower frame assembly is arranged to be a hollow frame. One end of the battery assembly is connected with the upper frame assembly, and the other end is connected with the lower frame assembly. The electric connection assembly is electrically connected with the battery assembly; the electric connection assembly is connected with the lower frame assembly. And the two temperature control assemblies are respectively communicated with the battery assembly. The temperature control assembly is connected with the lower frame assembly. The electric connection assembly and the two temperature control assemblies are sequentially arranged in the hollow cavity of the lower frame assembly at intervals in the length direction of the lower frame assembly. Therefore, the problem that the electric connection assembly of the battery box is inconvenient to overhaul 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] At present, large electric vehicles (such as transport vehicles or functional vehicles) usually adopt large-capacity battery boxes as driving energy sources. Since the battery box is large in size and heavy in weight, the internal battery components will generate a high heat during the working process, and therefore a high-efficiency temperature control system needs to be configured to ensure the stable operation of the battery. The patent document with the publication number CN114256497B provides a battery pack and a vehicle, which includes a box assembly, the box assembly includes a box, a heat-conducting beam and a temperature control component, the heat-conducting beam is arranged in the box and connected to the box, and the temperature control component is arranged at the bottom region of the box; a heat-conducting cover is connected with the heat-conducting beam and located above the heat-conducting beam along the height direction of the battery pack, and the heat-conducting cover and the box and the heat-conducting beam form a first cavity; and a plurality of battery monomers form a battery assembly, and the battery assembly is arranged in the first cavity and located above the temperature control component.

[0003] Since the internal space of the lower frame assembly is limited, and a plurality of temperature control components and electrical connection assemblies need to be arranged, it will cause difficulty in component arrangement. If the temperature control components and the electrical connection assemblies are too dense or the layout is unreasonable, it may be difficult to access and maintain the electrical connection assemblies when they fail. Therefore, it is urgent to optimize the space allocation of the lower frame assembly to make the maintenance of the electrical connection assemblies and the temperature control components more convenient. SUMMARY

[0004] To solve the problem of inconvenient maintenance of the electrical connection assembly of the battery box, the utility model provides a battery box, which comprises:

[0005] An upper frame assembly is arranged as a hollow frame;

[0006] A battery assembly;

[0007] A lower frame assembly is arranged as a hollow frame; one end of the battery assembly is connected with the upper frame assembly, and the other end is connected with the lower frame assembly;

[0008] An electrical connection assembly is electrically connected with the battery assembly; the electrical connection assembly is connected with the lower frame assembly;

[0009] Two temperature control assemblies are respectively communicated with the battery assembly; the temperature control assemblies are connected with the lower frame assembly;

[0010] The electrical connection assembly and the two temperature control assemblies are sequentially and spacedly arranged in the hollow cavity of the lower frame assembly along the length direction of the lower frame assembly.

[0011] In some embodiments, the lower frame assembly comprises a first lower frame, a second lower frame, a lower column; the first lower frame is connected with the battery assembly; the first lower frame and the second lower frame are arranged at intervals; one end of the lower column is connected with the first lower frame, and the other end is connected with the second lower frame; the first lower frame, the second lower frame and the lower column enclose a hollow frame.

[0012] In some embodiments, the electrical connection assembly comprises an electrical connector and a controller; the electrical connector is connected with the lower frame assembly; the electrical connector is electrically connected with the controller; the controller is electrically connected with the battery assembly.

[0013] In some embodiments, the projection profile of the electrical connection assembly along a first direction is contained in the projection profile of the cavity of the hollow frame enclosed by the lower frame assembly near one end of the electrical connection assembly along the first direction; wherein the first direction is the direction in which the electrical connection assembly and the two temperature control assemblies are arranged in sequence.

[0014] In some embodiments, the projection profile of the temperature control assembly along a first direction is contained in the projection profile of the cavity of the hollow frame enclosed by the lower frame assembly near one end of the temperature control assembly along the first direction.

[0015] In some embodiments, the projection profile of the temperature control assembly along a second direction intersects with the projection profile of the cavity of the hollow frame enclosed by the lower frame assembly along the second direction; wherein the second direction is perpendicular to the first direction.

[0016] In some embodiments, the lower frame assembly further comprises a lower protection plate; the lower protection plate is arranged on the side of the lower frame assembly near the battery assembly and is connected with the first lower frame; the projection profile of the battery assembly on the lower protection plate is contained in the profile of the side of the lower protection plate near the battery assembly.

[0017] In some embodiments, the battery assembly comprises a battery frame, a battery pack and a cooling plate; one side of the battery frame is connected with the upper frame assembly, and the other side is connected with the lower frame assembly; the battery pack is arranged in the hollow frame enclosed by the battery frame and is connected therewith; the battery pack is electrically connected with the electrical connection assembly; the cooling plate is connected with the battery pack, and the cooling plate is in communication with the temperature control assembly.

[0018] In some embodiments, the upper frame assembly comprises a first upper frame, a second upper frame and an upper column; the second upper frame is connected with the battery assembly; the first upper frame and the second upper frame are arranged at intervals; one end of the upper column is connected with the first upper frame, and the other end is connected with the second upper frame; the first upper frame, the second upper frame and the upper column enclose a hollow frame.

[0019] In some embodiments, the upper frame assembly further includes an upper protective plate; the upper protective plate is disposed on the side of the upper frame assembly near the battery assembly and connected to the second upper frame; the projected outline of the battery assembly on the upper protective plate is encompassed by the outline of the upper protective plate on the side near the battery assembly.

[0020] To address the problem of inconvenient maintenance of the battery box electrical connection components, this utility model has the following advantages:

[0021] By sequentially arranging the electrical connection assembly and two temperature control assemblies at intervals along the length of the lower frame assembly within its hollow cavity, the electrical connection assembly is positioned on one side of the lower frame assembly, achieving a partitioned arrangement of the electrical connection assembly and temperature control assemblies. This structure allows for rapid location and repair of the electrical connection assembly in case of failure, without the need to disassemble other components. Simultaneously, the two temperature control assemblies are positioned in different locations, ensuring that if one temperature control assembly fails, the other can still maintain basic temperature control functions, thereby guaranteeing the temperature control stability of the battery pack. Ultimately, this solves the problem of difficult maintenance of the electrical connection assembly caused by unreasonable internal arrangement of the lower frame assembly, and improves the reliability and maintainability of the battery pack system. Attached Figure Description

[0022] Figure 1 A schematic diagram of a battery box structure according to one embodiment is shown;

[0023] Figure 2 It shows Figure 1 Front view of the battery box;

[0024] Figure 3 It shows Figure 1 Right view of the middle battery box;

[0025] Figure 4 It shows Figure 1 A schematic diagram of the battery compartment from the left.

[0026] Reference numerals: 01 Upper frame assembly; 11 First upper frame; 12 Second upper frame; 13 Upper column; 02 Battery assembly; 21 Battery frame; 22 Battery pack; 03 Lower frame assembly; 31 First lower frame; 32 Second lower frame; 33 Lower column; 04 Electrical connection assembly; 05 Temperature control assembly. Detailed Implementation

[0027] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0028] 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 "one embodiment" and "an embodiment" are to be read as "at least one embodiment." The term "another embodiment" is to be read as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and similar terms are used for orientation or positional relationship based on the orientation or positional relationship as shown in the drawings. These terms are used merely for the sake of description and are not intended to limit the devices, elements, or components to a particular orientation or configuration unless expressly so limited. Moreover, the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and the like are used only to describe the particular orientation of the components, as shown in the drawings, and are not intended to limit the scope of the disclosure to only such orientations. Additionally, the terms "mount," "set," "provided with," "connected," "linked," should be given broadest 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 intermediate medium, or internal connection between two devices, elements or components. For those skilled 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 mainly used to distinguish different devices, elements or components (the specific types and structures 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.

[0029] At present, the lower frame assembly 03 of the battery box is a key structure for accommodating the electrical connection assembly 04 and the temperature control assembly 05, and the internal space needs to be arranged with the electrical connection assembly 04 and two temperature control assemblies 05. Due to the limited hollow cavity space of the lower frame assembly 03, and the electrical connection assembly 04 and the two temperature control assemblies 05 all need to maintain a connection relationship with the battery assembly 02, the arrangement density of each assembly in the length direction of the lower frame assembly 03 is high. This compact layout makes the electrical connection assembly 04 be arranged in the narrow space between the temperature control assemblies 05, and when the electrical connection assembly 04 fails, the maintenance personnel is difficult to directly touch and effectively maintain. The problem is mainly caused by the unreasonable internal space distribution of the lower frame assembly 03, and each functional assembly does not form a layout structure convenient for maintenance, thereby affecting the maintenance efficiency of the battery box. In the present embodiment, a battery box is provided, such as Figure 1As shown, the battery box comprises an upper frame assembly 01, a battery assembly 02, a lower frame assembly 03, an electrical connection assembly 04 and a temperature control assembly 05.

[0030] The upper frame assembly 01 can be provided as a hollow frame structure, which can reduce the overall weight while ensuring the structural strength, and facilitate the utilization of the internal space and the arrangement of components.

[0031] The lower frame assembly 03 is provided as a hollow frame structure. One end of the battery assembly 02 is connected to the upper frame assembly 01, and the other end is connected to the lower frame assembly 03. The frame structure of the upper frame assembly 01 and the lower frame assembly 03 provides support for both ends of the battery assembly 02, forming a stable mounting structure.

[0032] The electrical connection assembly 04 can be electrically connected to the battery assembly 02; the electrical connection assembly 04 can be detachably connected to the lower frame assembly 03. Thus, the electrical connection assembly 04 can realize the transmission of electrical signals or electrical energy between the battery assembly 02 and the external circuit while being fixed in position by connecting to the lower frame assembly 03.

[0033] The two temperature control assemblies 05 can be respectively communicated with the battery assembly 02 and detachably connected to the lower frame assembly 03. The communication between the temperature control assembly 05 and the battery assembly 02 can regulate the temperature of the battery assembly 02 and ensure its working performance. The detachable connection between the temperature control assembly 05 and the lower frame assembly 03 can fix the position and facilitate the installation and maintenance of the temperature control assembly 05.

[0034] The electrical connection assembly 04 and the two temperature control assemblies 05 can be sequentially and spacedly arranged in the hollow chamber of the lower frame assembly 03 along the length direction of the lower frame assembly 03. Through this layout, the electrical connection assembly 04 and the temperature control assembly 05 located on both sides of the battery box are convenient for maintenance, and when the middle temperature control assembly 05 fails, the outer temperature control assembly 05 can be temporarily replaced to ensure the continuous operation of the system.

[0035] In the present embodiment, as shown, Figure 2 The lower frame assembly 03 can comprise a first lower frame 31, a second lower frame 32 and a lower column 33. The first lower frame 31 can be detachably connected to the battery assembly 02, so that the lower frame assembly 03 becomes one of the support bases of the battery assembly 02. The first lower frame 31 and the second lower frame 32 are spacedly arranged, so that the first lower frame 31 and the second lower frame 32 are spaced at a certain distance, forming a frame structure with a certain space. The lower column 33 can be connected at one end to the first lower frame 31 and at the other end to the second lower frame 32, which can stably support the space between the first lower frame 31 and the second lower frame 32 and enhance the overall structural strength of the lower frame assembly 03.

[0036] In the embodiment, the electrical connection assembly 04 can include an electrical connector and a controller. The electrical connector can be connected with the lower frame assembly 03 so as to be fixed in position. The electrical connector can be electrically connected with the controller so as to realize control of the electrical connector through the controller. The controller can be electrically connected with the battery assembly 02, and the controller controls or adjusts the electrical connection state of the battery assembly 02.

[0037] In the embodiment, as shown in Figure 3 , the projection profile of the electrical connection assembly 04 along the first direction is contained in the projection profile of the cavity of the hollow frame of the lower frame assembly 03 close to the end of the electrical connection assembly 04 along the first direction. The first direction is the direction in which the electrical connection assembly 04 and the two temperature control assemblies 05 are arranged in sequence. Through the projection containing relationship, that is, the opening size of the lower frame assembly 03 in the direction is greater than that of the electrical connection assembly 04, the electrical connection assembly 04 can be disassembled through the cavity on the side of the lower frame assembly 03, which is convenient for the operator to overhaul and maintain the electrical connection assembly 04.

[0038] In the embodiment, as shown in Figure 4 , the projection profile of the temperature control assembly 05 along the first direction is contained in the projection profile of the cavity of the hollow frame of the lower frame assembly 03 close to the end of the temperature control assembly 05 along the first direction. Through the projection containing relationship, that is, the opening size of the lower frame assembly 03 in the direction is greater than that of the temperature control assembly 05, the temperature control assembly 05 can be disassembled through the cavity on the side of the lower frame assembly 03, which is convenient for the operator to overhaul and maintain the temperature control assembly 05.

[0039] In the embodiment, as shown in Figure 2 , the projection profile of the temperature control assembly 05 along the second direction intersects with the projection profile of the cavity of the hollow frame of the lower frame assembly 03 along the second direction. The second direction is perpendicular to the first direction. The second direction is the length direction of the battery box. In order to improve the strength of the lower frame assembly 03, some connecting beams are additionally arranged between the first lower frame 31 and the second lower frame 32 in the length direction, so as to reduce the cavity profile area. In addition, when the battery box is installed on the vehicle, the length direction side of the battery box is close to the cab or the cargo box, so there is no space to disassemble the temperature control assembly 05 or the electrical connection assembly 04 from the length direction.

[0040] In the embodiment, the lower frame assembly 03 can further include a lower protection plate. The lower protection plate can be arranged on the side of the lower frame assembly 03 close to the battery assembly 02 and connected with the first lower frame 31. The projection profile of the battery assembly 02 on the lower protection plate can be contained in the profile of the side of the lower protection plate close to the battery assembly 02, so that the lower protection plate can block the lower side of the battery assembly 02, avoiding the battery assembly 02 from being impacted or collided from the lower side.

[0041] In the embodiment, as shown in Figure 1As shown, the battery assembly 02 includes a battery frame 21, a battery pack 22, and a cooling plate. The battery frame 21 is connected to the upper frame assembly 01 on one side and to the lower frame assembly 03 on the other side, and the battery pack 22 is arranged in and connected to the hollow frame formed by the battery frame 21, so that the battery pack 22 is fixed and protected by the battery frame 21. The battery pack 22 can be electrically connected to the electrical connection assembly 04 to realize electrical signal or electrical energy transmission between the battery pack 22 and the external circuit. The cooling plate is connected to the battery pack 22 and communicates with the temperature control assembly 05, so that the temperature control assembly 05 can exchange heat with the battery pack 22 through the cooling plate to control the temperature of the battery pack 22.

[0042] In the present embodiment, as shown in the drawings, Figure 1 The upper frame assembly 01 can include a first upper frame 11, a second upper frame 12, and an upper stand column 13. The second upper frame 12 can be connected to the battery assembly 02. The first upper frame 11 and the second upper frame 12 are arranged in a spaced manner, and the upper stand column 13 is connected to the first upper frame 11 on one end and to the second upper frame 12 on the other end. A stable hollow frame is formed by the connection of the first upper frame 11, the second upper frame 12, and the upper stand column 13, so as to reduce the weight while ensuring the carrying capacity.

[0043] In the present embodiment, the upper frame assembly 01 can further include an upper protection plate. The upper protection plate can be arranged on the side of the upper frame assembly 01 close to the battery assembly 02 and connected to the second upper frame 12, and the projection profile of the battery assembly 02 on the upper protection plate is contained in the profile of the side of the upper protection plate close to the battery assembly 02. Thus, the upper protection plate can block the upper side of the battery assembly 02 to avoid the battery assembly 02 from being impacted or collided from above.

[0044] Those skilled in the art can understand that the above 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 arranged as a hollow frame; a battery assembly; a lower frame assembly arranged as a hollow frame; one end of the battery assembly is connected with the upper frame assembly, and the other end is connected with the lower frame assembly; an electrical connection assembly electrically connected with the battery assembly; the electrical connection assembly is connected with the lower frame assembly; two temperature control assemblies respectively in communication with the battery assembly; the temperature control assemblies are connected with the lower frame assembly; the electrical connection assembly and the two temperature control assemblies are sequentially and spacedly arranged in the hollow chamber of the lower frame assembly along the length direction of the lower frame assembly.

2. The battery box according to claim 1, wherein the lower frame assembly comprises a first lower frame, a second lower frame and a lower stand column; the first lower frame is connected with the battery assembly; the first lower frame and the second lower frame are spacedly arranged; one end of the lower stand column is connected with the first lower frame, and the other end is connected with the second lower frame; the first lower frame, the second lower frame and the lower stand column enclose a hollow frame.

3. The battery box according to claim 1, wherein the electrical connection assembly comprises an electrical connector and a controller; the electrical connector is connected with the lower frame assembly; the electrical connector is electrically connected with the controller; the controller is electrically connected with the battery assembly.

4. The battery box according to claim 1, wherein a projection profile of the electrical connection assembly along a first direction is contained in a projection profile of a hollow frame enclosed by the lower frame assembly along the first direction near one end of the hollow frame close to the electrical connection assembly; wherein the first direction is a direction in which the electrical connection assembly and the two temperature control assemblies are sequentially arranged.

5. The battery box according to claim 2, wherein a projection profile of the temperature control assembly along the first direction is contained in a projection profile of the hollow frame enclosed by the lower frame assembly along the first direction near one end of the hollow frame close to the temperature control assembly.

6. The battery box according to claim 2, wherein a projection profile of the temperature control assembly along a second direction intersects with a projection profile of a hollow frame enclosed by the lower frame assembly along the second direction; wherein the second direction is perpendicular to the first direction.

7. The battery box according to claim 2, wherein the lower frame assembly further comprises a lower protection plate; the lower protection plate is arranged on a side of the lower frame assembly close to the battery assembly and connected with the first lower frame; a projection profile of the battery assembly on the lower protection plate is contained in a profile of the lower protection plate close to the battery assembly.

8. The battery box according to claim 1, wherein the battery assembly comprises a battery frame, a battery pack and a cooling plate; one side of the battery frame is connected with the upper frame assembly, and the other side is connected with the lower frame assembly; the battery pack is arranged in a hollow frame enclosed by the battery frame and connected therewith; the battery pack is electrically connected with the electrical connection assembly; the cooling plate is connected with the battery pack, and the cooling plate is in communication with the temperature control assembly.

9. The battery box of claim 1, wherein: the upper frame assembly comprises a first upper frame, a second upper frame, and an upper column; the second upper frame is connected to the battery assembly; the first upper frame is spaced apart from the second upper frame; the upper column is connected to the first upper frame at one end and connected to the second upper frame at the other end; and the first upper frame, the second upper frame, and the upper column enclose a hollow frame.

10. The battery box of claim 9, wherein: the upper frame assembly further comprises an upper guard plate; the upper guard plate is disposed on a side of the upper frame assembly proximate to the battery assembly and connected to the second upper frame; and a projection of the battery assembly on the upper guard plate is contained within a contour of the upper guard plate on the side proximate to the battery assembly.

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