Battery box

Abstract

The utility model relates to the technical field of energy storage, in particular to a battery box. The battery box comprises a top frame assembly, a bottom frame assembly, an electric connection assembly and a battery assembly. The top frame assembly is arranged to be a hollow frame, the bottom frame assembly is arranged to be a hollow frame, and the electric connection assembly is arranged in a hollow cavity of the bottom frame assembly. The battery assembly comprises a battery unit, a top connecting unit, a middle connecting unit and a bottom connecting unit. The top frame assembly, the at least two battery units and the bottom frame assembly are connected in sequence. Two adjacent battery units are electrically connected through the middle connecting unit; one side, close to the top frame assembly, of the battery unit connected with the top frame assembly is connected with the top connecting unit; the side, close to the bottom frame assembly, of the battery unit connected with the bottom frame assembly is connected with the bottom connecting unit. The electric connection assembly is electrically connected with the bottom connection unit. Therefore, the problem that the battery box cannot adapt to different vehicles is solved.

Description

Technical Field

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

[0002] In the field of electric vehicle technology, different vehicle models have varying requirements for battery capacity, voltage platform, and layout due to factors such as range, power, and vehicle body structure. The traditional approach is to customize the battery box for each vehicle model, adapting everything from the box structure to the internal layout and interfaces to the specific battery pack and vehicle. Patent document CN113611975B discloses a battery pack including a battery box and battery modules. The battery box has a support frame for supporting the battery modules, with several pin holes on the support frame. The battery modules have several pins that mate with the pin holes. The battery modules include a first battery assembly, a second battery assembly connected in parallel with the first battery assembly, and a separator assembly. The first and second battery assemblies are each composed of a different number of module units connected in series.

[0003] Because battery capacities, sizes, interface standards, and installation requirements vary across vehicle models, each model, and even different configurations of the same model, requires independently designed and manufactured battery boxes. From R&D to production, resources are repeatedly invested, making it impossible to achieve economies of scale and standardization. This directly leads to low production efficiency and significant waste of R&D, manufacturing, materials, and time costs. The core problem lies in the lack of universality and standardization in existing battery box designs and configurations, making it difficult to balance the conflict between diverse vehicle needs and efficient production. Utility Model Content

[0004] To address the issue of battery boxes being incompatible with different vehicles, this utility model provides a battery box comprising:

[0005] A top frame component, wherein the top frame component is configured as a hollow frame;

[0006] A bottom frame assembly, wherein the bottom frame assembly is configured as a hollow frame;

[0007] An electrical connection assembly disposed within the hollow cavity of the bottom frame assembly;

[0008] A battery assembly includes battery cells, a top connection unit, a middle connection unit, and a bottom connection unit; the top frame assembly, at least two battery cells, and the bottom frame assembly are connected sequentially; adjacent battery cells are electrically connected through the middle connection unit; the side of the battery cell connected to the top frame assembly is connected to the top connection unit on the side closest to the top frame assembly; the side of the battery cell connected to the bottom frame assembly is connected to the bottom connection unit on the side closest to the bottom frame assembly; and the electrical connection assembly is electrically connected to the bottom connection unit.

[0009] In some embodiments, the battery unit includes a battery casing, a battery cell, and a first electrical connection module; the battery casing is configured as a hollow frame; the top frame assembly, at least two battery casings, and the bottom frame assembly are connected in sequence; the battery cell is disposed in the hollow cavity of the battery casing; the first electrical connection module is connected to the battery casing; the first electrical connection module is electrically connected to the battery cell; the first electrical connection module is electrically connected to the middle connection unit; the first electrical connection module near the bottom frame assembly is electrically connected to the bottom connection unit; the first electrical connection module is provided with a first groove and a second groove; the first groove accommodates a portion of the middle connection unit or the top connection unit; the second groove accommodates a portion of the middle connection unit or a portion of the bottom connection unit.

[0010] In some embodiments, the first electrical connection module includes a battery connector, a positive connector, a negative connector, and a low-voltage battery connector; the battery connector is connected to the battery casing; the positive connector, the negative connector, and the low-voltage battery connector pass through the battery connector; the positive connector, the negative connector, the low-voltage battery connector, and the battery cell are electrically connected; two adjacent positive connectors are electrically connected through the middle connection unit; two adjacent negative connectors are electrically connected through the middle connection unit; two adjacent low-voltage battery connectors are electrically connected through the middle connection unit; the battery connector near the top frame assembly is connected to the top connection unit; the positive connector, the negative connector, and the low-voltage battery connector near the bottom frame assembly are electrically connected to the electrical connection assembly through the bottom connection unit.

[0011] In some embodiments, the intermediate connection unit includes an intermediate connection base, an intermediate positive electrode, an intermediate negative electrode, and an intermediate low-voltage connector; the intermediate positive electrode, the intermediate negative electrode, and the intermediate low-voltage connector pass through the intermediate connection base; the two ends of the intermediate positive electrode are electrically connected to the two positive connectors respectively; the two ends of the intermediate negative electrode are electrically connected to the two negative connectors respectively; and the two ends of the intermediate low-voltage connector are electrically connected to the two battery low-voltage connectors respectively.

[0012] In some embodiments, the bottom connection unit includes a bottom connection base, a bottom positive electrode, a bottom negative electrode, and a bottom low-voltage connector; the bottom positive electrode, the bottom negative electrode, and the bottom low-voltage connector pass through the bottom connection base; one end of the bottom positive electrode is electrically connected to the positive connector near the bottom frame assembly, and the other end is electrically connected to the electrical connection assembly via a cable; one end of the bottom negative electrode is electrically connected to the negative connector near the bottom frame assembly, and the other end is electrically connected to the electrical connection assembly via a cable; one end of the bottom low-voltage connector is electrically connected to the battery low-voltage connector near the bottom frame assembly, and the other end is electrically connected to the electrical connection assembly via a cable.

[0013] In some embodiments, the top connection unit includes a top connection seat, a top low-voltage connector, and a top clearance slot; the top low-voltage connector and the top connection seat are connected; two top clearance slots are respectively disposed on both sides of the top low-voltage connector; the top low-voltage connector is electrically connected to an adjacent battery low-voltage connector; one top clearance slot corresponds to and accommodates a portion of the adjacent positive connector; one top clearance slot corresponds to and accommodates a portion of the adjacent negative connector.

[0014] In some embodiments, the battery box further includes a temperature control component; the temperature control component includes a temperature controller, a temperature control tube, and a liquid replenisher; the battery cell further includes a heat exchanger; the heat exchanger is connected to the battery cell; one end of the temperature control tube is connected to the temperature controller, and the other end is connected to the heat exchanger; the temperature controller is disposed in the hollow cavity formed by the bottom frame assembly; the temperature controller is electrically connected to the electrical connection assembly; the liquid replenisher is connected to the temperature controller through the temperature control tube.

[0015] In some embodiments, the electrical connection assembly includes a control box and a second electrical connection unit; the control box and the second electrical connection unit are electrically connected; the second electrical connection unit is electrically connected to the battery unit through the bottom connection unit.

[0016] In some embodiments, the top frame assembly includes a top side frame and a top connecting beam; two top side frames are spaced apart; the top connecting beam is connected to one of the top side frames at each end; the top side frames and the top connecting beam form a hollow frame.

[0017] In some embodiments, the bottom frame assembly includes bottom side frames and bottom connecting beams; two bottom side frames are spaced apart; each end of the bottom connecting beam is connected to one of the bottom side frames; the bottom side frames and the bottom connecting beams form a hollow frame.

[0018] To solve the problem of battery boxes being incompatible with different vehicles, this utility model has the following advantages:

[0019] The battery pack consists of a top frame assembly, a bottom frame assembly, and multiple battery units. The top and bottom frames are hollow, with the top used for hoisting and the bottom housing the electrical connection components for external power transmission. The battery units are stacked vertically via connecting structures to form a modular, expandable structure. The standardized design of the top and bottom frames separates mechanical load-bearing and electrical connections, while the number of modular battery units in the middle can be increased or decreased as needed. When adjusting the capacity, battery units are inserted or removed between the top and bottom frames. The middle connecting unit completes the circuit connection, and the bottom connecting unit and the electrical connection components ensure conductivity. This structure allows the same-sized top and bottom frames to accommodate different combinations of battery units, changing the fixed connection between the battery box and the vehicle, reducing the cost of repetitive development of multi-specification battery boxes, reducing investment in dedicated equipment, achieving cross-platform commonality of components, and solving problems such as R&D waste, low equipment utilization, and complex supply chain management caused by capacity differences. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a battery box according to one embodiment is shown;

[0021] Figure 2 It shows Figure 1 A schematic diagram of the battery assembly in the diagram;

[0022] Figure 3 It shows Figure 1 A schematic diagram of the top connection unit in the diagram;

[0023] Figure 4 It shows Figure 1 A schematic diagram of the structure of the connecting unit in the middle;

[0024] Figure 5 It shows Figure 1 A schematic diagram of the bottom connecting unit in the middle;

[0025] Figure 6 A partial structural schematic diagram of a temperature control component in one embodiment is shown.

[0026] Reference numerals: 01 Top frame assembly; 11 Top side frame; 12 Top connecting beam; 02 Battery assembly; 21 Battery unit; 211 Battery casing; 212 First electrical connection module; 2121 Battery connector; 2122 Positive connector; 2123 Negative connector; 2124 Battery low-voltage connector; 22 Top connection unit; 221 Top connector; 222 Top low-voltage connector; 223 Top clearance groove; 23 Middle connection unit; 231 Middle connector; 232 Middle positive electrode; 233 Middle negative electrode; 234 Middle low-voltage connector; 24 Bottom connection unit; 241 Bottom connector; 242 Bottom positive electrode; 243 Bottom negative electrode; 244 Bottom low-voltage connector; 03 Bottom frame assembly; 04 Electrical connection assembly; 05 Temperature control assembly; 51 Temperature controller; 52 Temperature control tube; 53 Liquid replenisher. 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 "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0029] In the field of electric vehicle technology, different vehicle models have significantly different requirements for battery capacity, voltage platform, and installation space due to differences in driving range, power system configuration, and body structure. In existing technologies, battery boxes typically require custom design tailored to the specific needs of each vehicle model. Due to the lack of a flexible and universal design, when vehicle requirements for battery capacity change, the matching structure of the top frame assembly 01 and bottom frame assembly 03, the connection method of the battery units 21, and the interface configuration of the electrical connection assembly 04 must be redesigned. This results in electric vehicles with different requirements needing to be equipped with completely independent battery boxes. The fundamental reason is that existing battery boxes lack a standardized, detachable, and combinable connection structure between the top frame assembly 01, bottom frame assembly 03, and battery unit 02. Furthermore, there is no universal intermediate connection unit 23 between adjacent battery units 21, making it impossible to adjust the number of battery units 21 according to actual needs. The electrical connection assembly 04 also cannot achieve universal docking with different combinations of battery units 21. This non-modular design means that each model, and even different configurations of the same model, requires the separate development and manufacturing of dedicated battery boxes, leading to problems such as extended development cycles, increased manufacturing costs, and low production efficiency.

[0030] In this embodiment, as Figure 1 As shown, the battery box may include a top frame assembly 01, a bottom frame assembly 03, an electrical connection assembly 04, and a battery assembly 02. The top frame assembly 01 may be configured as a hollow frame, and the hollow frame structure can provide a standardized hoisting interface. The bottom frame assembly 03 may be configured as a hollow frame, and the electrical connection assembly 04 may be located within the hollow cavity of the bottom frame assembly 03, thereby realizing external circuit interfaces, etc.

[0031] Battery assembly 02 may include battery cells 21, a top connecting unit 22, a middle connecting unit 23, and a bottom connecting unit 24. The top frame assembly 01, at least two battery cells 21, and the bottom frame assembly 03 can be connected sequentially. Adjacent battery cells 21 can be electrically connected via the middle connecting unit 23. When adding a battery cell 21, only one middle connecting unit 23 needs to be added simultaneously to integrate the added battery cell 21 with the existing ones. The side of the battery cell 21 connected to the top frame assembly 01 closest to the top frame assembly 01 can be connected to the top connecting unit 22; the side of the battery cell 21 connected to the bottom frame assembly 03 closest to the bottom frame assembly 03 can be connected to the bottom connecting unit 24. The electrical connecting assembly 04 can be electrically connected to the bottom connecting unit 24.

[0032] The modular, layered design of the battery module 02 achieves vertically expandable connections through the cooperation of the top connecting unit 22, the middle connecting unit 23, and the bottom connecting unit 24. By combining the fixed frame of the top and bottom frames with the stacking design of the detachable battery units 21 in the middle, the number of battery units 21 can be adjusted according to needs, eliminating the rigid binding relationship between the traditional battery box and the vehicle architecture, thereby solving the problems of wasted R&D resources and low production efficiency caused by the parallel development of multiple battery box specifications.

[0033] In this embodiment, as Figure 2 As shown, the battery unit 21 may include a battery casing 211, a battery cell, and a first electrical connection module 212. The battery casing 211 may be configured as a hollow frame, and the battery cell may be disposed in the hollow cavity of the battery casing 211. The top frame assembly 01, at least two battery casings 211, and the bottom frame assembly 03 may be detachably connected in sequence. The first electrical connection module 212 may be connected to the battery casing 211. The first electrical connection module 212 may be located on the side of the battery casing 211 along its length. The first electrical connection module 212 may be electrically connected to the battery cell, thereby transmitting electricity in the battery cell through the first electrical connection module 212. The first electrical connection module 212 may be electrically connected to the middle connection unit 23, and the first electrical connection module 212 near the bottom frame assembly 03 may be electrically connected to the bottom connection unit 24. A first groove and a second groove may be provided on the first electrical connection module 212. The first groove can accommodate part of the middle connecting unit 23 or the top connecting unit 22, and the second groove can accommodate part of the middle connecting unit 23 or part of the bottom connecting unit 24. The adjacent first and second grooves can jointly accommodate the middle connecting unit 23, so that the battery units 21 fit together tightly.

[0034] The frame structure of the battery casing 211 provides a standardized space for the battery cells. The double groove design of the first electrical connection module 212 enables the insertion and positioning of the upper and lower connection units. By connecting the connectors of adjacent units through the first groove and the second groove, the mechanical positioning accuracy and electrical connection reliability of the battery units 21 when stacked vertically are ensured, and the battery units 21 can be quickly assembled and disassembled.

[0035] In this embodiment, as Figure 2As shown, the first electrical connection module 212 may include a battery connector 2121, a positive connector 2122, a negative connector 2123, and a low-voltage battery connector 2124. The battery connector 2121 can be connected to the battery casing 211. The positive connector 2122, negative connector 2123, and low-voltage battery connector 2124 can penetrate the battery connector 2121; the positive connector 2122, negative connector 2123, and low-voltage battery connector 2124 can be electrically connected to the battery cell. Two adjacent positive connectors 2122 can be electrically connected through a middle connection unit 23; two adjacent negative connectors 2123 can be electrically connected through a middle connection unit 23; two adjacent low-voltage battery connectors 2124 can be electrically connected through a middle connection unit 23. The battery connector 2121 near the top frame assembly 01 can be connected to the top connection unit 22; the positive connector 2122, negative connector 2123, and low-voltage battery connector 2124 near the bottom frame assembly 03 can be electrically connected to the electrical connection assembly 04 through the bottom connection unit 24, thereby realizing a complete circuit from the positive connector 2122 to the negative connector 2123. At the same time, the electrical connection assembly 04 can be electrically connected to the low-voltage battery connector 2124 to realize low-voltage control.

[0036] The battery connector 2121 serves as a load-bearing base, integrating the high-voltage power circuit and the low-voltage control circuit into a single module. The independent through-type design of the positive connector 2122, the negative connector 2123, and the low-voltage battery connector 2124 enables hierarchical management of the circuit. The synchronous transmission of three signals between adjacent units is achieved through the middle connection unit 23. The differentiated interfaces of the top connection unit 22 and the bottom connection unit 24 ensure reliable docking between the first and last units and the frame components, forming a complete electrical transmission path.

[0037] In this embodiment, as Figure 4 As shown, the intermediate connection unit 23 may include an intermediate connection base 231, a positive electrode 232, a negative electrode 233, and a low-voltage connector 234. The positive electrode 232, negative electrode 233, and low-voltage connector 234 can pass through the intermediate connection base 231. The two ends of the positive electrode 232 can be electrically connected to two positive connectors 2122 respectively; the two ends of the negative electrode 233 can be electrically connected to two negative connectors 2123 respectively; the two ends of the low-voltage connector 234 can be electrically connected to two low-voltage connectors 2124 respectively, thereby electrically connecting multiple battery units 21. The intermediate connection base 231 serves as an intermediate connection carrier. The positive electrode 232 and negative electrode 233 bridge the high-voltage circuit between adjacent battery units 21. The low-voltage connector 234 synchronously transmits control signals. The parallel arrangement of the three channels ensures the synchronous completion of energy transmission and information interaction between battery units 21, improving the circuit construction efficiency during modular assembly.

[0038] In this embodiment, as Figure 5As shown, the bottom connection unit 24 may include a bottom connection base 241, a bottom positive electrode 242, a bottom negative electrode 243, and a bottom low-voltage connector 244. The bottom positive electrode 242, bottom negative electrode 243, and bottom low-voltage connector 244 may pass through the bottom connection base 241. One end of the bottom positive electrode 242 may be electrically connected to the positive connector 2122 near the bottom frame assembly 03, and the other end may be electrically connected to the electrical connection assembly 04 via a cable; one end of the bottom negative electrode 243 may be electrically connected to the negative connector 2123 near the bottom frame assembly 03, and the other end may be electrically connected to the electrical connection assembly 04 via a cable; one end of the bottom low-voltage connector 244 may be electrically connected to the battery low-voltage connector 2124 near the bottom frame assembly 03, and the other end may be electrically connected to the electrical connection assembly 04 via a cable. The bottom connector 241 serves as the bottom electrical conversion node. The bottom positive terminal 242 and the bottom negative terminal 243 connect the high voltage output terminal of the battery pack to the electrical connection component 04. The bottom low voltage connector 244 enables the transmission of control signals to the external system. The independent routing design of the three cables avoids signal interference and ensures the electrical stability of the terminal output interface.

[0039] In this embodiment, as Figure 3 As shown, the top connection unit 22 may include a top connection base 221, a top low-voltage connector 222, and a top clearance slot 223. The top low-voltage connector 222 can be connected to the top connection base 221, and two top clearance slots 223 can be respectively disposed on both sides of the top low-voltage connector 222. The top low-voltage connector 222 can be electrically connected to the adjacent battery low-voltage connector 2124. One top clearance slot 223 can correspond to and accommodate part of the adjacent positive connector 2122; one top clearance slot 223 can correspond to and accommodate part of the adjacent negative connector 2123. The clearance slot structure of the top connection base 221 provides physical isolation space for the high-voltage connector, and the top low-voltage connector 222 is dedicated to forming a partial signal loop to transmit control signals to the electrical connection component 04. The clearance slot achieves spatial separation of high and low voltage lines, prevents arc interference, and improves the safety of the top connection part.

[0040] In this embodiment, as Figure 6As shown, the battery box may also include a temperature control component 05. The temperature control component 05 may include a temperature controller 51, a temperature control tube 52, and a liquid replenisher 53. The battery cell 21 may also include a heat exchanger. The heat exchanger can be connected to the battery cell 21 for heat exchange. One end of the temperature control tube 52 can be connected to the temperature controller 51, and the other end can be connected to the heat exchanger, so that the temperature-controlled medium in the temperature controller 51 can enter the heat exchanger through the temperature control tube 52, thereby regulating the temperature of the battery cell 21. The first electrical connection module 212 can be located on one side of the battery casing 211 along its length, and the temperature control tube 52 can be located on the other side of the battery casing 211 along its length, thereby dividing the functional modules according to different functions for easy installation and maintenance. The temperature controller 51 can be located in the hollow cavity formed by the bottom frame component 03. The temperature controller 51 can be electrically connected to the electrical connection component 04. The replenishing device 53 can be connected to the temperature controller 51 via the temperature control tube 52, thereby replenishing the medium in the temperature controller 51.

[0041] The temperature controller 51 is integrated in the bottom frame cavity for centralized control. The temperature control tube 52 and the heat exchanger form a closed-loop thermal management circuit. The coolant replenisher 53 automatically replenishes the cooling medium through the pipeline system, ensuring that the modular battery units 21 can achieve a balanced thermal management effect under different configurations.

[0042] In this embodiment, the electrical connection component 04 may include a control box and a second electrical connection unit. The control box can be electrically connected to the second electrical connection unit. The second electrical connection unit can be electrically connected to the battery unit 21 through the bottom connection unit 24. The control box, as a central processing unit, integrates battery management functions, and the second electrical connection unit, as a physical interface layer, realizes a plug-in connection with the bottom connection unit 24, thereby achieving integrated management of the battery component 02.

[0043] In this embodiment, as Figure 1 As shown, the top frame assembly 01 may include a top side frame 11 and a top connecting beam 12. Two top side frames 11 may be spaced apart. Each end of the top connecting beam 12 may be connected to one top side frame 11. The top side frames 11 and the top connecting beam 12 can form a hollow frame. The frame structure formed by the top side frames 11 and the top connecting beam 12 creates a standardized hoisting base. The hollow design reduces overall weight and provides a channel for wiring harnesses, ensuring a balance between the strength and functionality of the top load-bearing structure.

[0044] In this embodiment, the bottom frame assembly 03 may include bottom side frames and bottom connecting beams. Two bottom side frames may be spaced apart. Each end of the bottom connecting beam may be connected to one bottom side frame. The bottom side frames and bottom connecting beams may form a hollow frame. The bottom frame formed by the bottom side frames and bottom connecting beams provides a stable support platform. The hollow chamber integrates core components such as the electrical connection assembly 04 and the temperature controller 51, achieving an integrated layout of functional modules.

[0045] It should be understood that the "this embodiment" mentioned in this utility model refers to the technical points described below, and multiple "this embodiments" may refer to the same embodiment or different embodiments.

[0046] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A battery box, characterized in that, The battery box includes: A top frame component, wherein the top frame component is configured as a hollow frame; A bottom frame assembly, wherein the bottom frame assembly is configured as a hollow frame; An electrical connection assembly disposed within the hollow cavity of the bottom frame assembly; A battery assembly includes battery cells, a top connection unit, a middle connection unit, and a bottom connection unit; the top frame assembly, at least two battery cells, and the bottom frame assembly are connected sequentially; adjacent battery cells are electrically connected through the middle connection unit; the side of the battery cell connected to the top frame assembly is connected to the top connection unit on the side closest to the top frame assembly; the side of the battery cell connected to the bottom frame assembly is connected to the bottom connection unit on the side closest to the bottom frame assembly; and the electrical connection assembly is electrically connected to the bottom connection unit.

2. The battery box according to claim 1, characterized in that, The battery unit includes a battery casing, a battery cell, and a first electrical connection module; the battery casing is configured as a hollow frame; the top frame assembly, at least two battery casings, and the bottom frame assembly are connected in sequence; the battery cell is disposed in the hollow cavity of the battery casing; the first electrical connection module is connected to the battery casing; the first electrical connection module is electrically connected to the battery cell; the first electrical connection module is electrically connected to the middle connection unit; the first electrical connection module near the bottom frame assembly is electrically connected to the bottom connection unit; the first electrical connection module is provided with a first groove and a second groove; the first groove accommodates part of the middle connection unit or the top connection unit; the second groove accommodates part of the middle connection unit or part of the bottom connection unit.

3. A battery box according to claim 2, characterized in that, The first electrical connection module includes a battery connector, a positive connector, a negative connector, and a low-voltage battery connector; the battery connector is connected to the battery casing; the positive connector, the negative connector, and the low-voltage battery connector pass through the battery connector; the positive connector, the negative connector, the low-voltage battery connector, and the battery cell are electrically connected; two adjacent positive connectors are electrically connected through the middle connection unit; two adjacent negative connectors are electrically connected through the middle connection unit; two adjacent low-voltage battery connectors are electrically connected through the middle connection unit; the battery connector near the top frame assembly is connected to the top connection unit; the positive connector, the negative connector, and the low-voltage battery connector near the bottom frame assembly are electrically connected to the electrical connection assembly through the bottom connection unit.

4. A battery box according to claim 3, characterized in that, The intermediate connection unit includes an intermediate connection base, an intermediate positive electrode, an intermediate negative electrode, and an intermediate low-voltage connector; the intermediate positive electrode, the intermediate negative electrode, and the intermediate low-voltage connector pass through the intermediate connection base; the two ends of the intermediate positive electrode are electrically connected to the two positive connectors respectively; the two ends of the intermediate negative electrode are electrically connected to the two negative connectors respectively; and the two ends of the intermediate low-voltage connector are electrically connected to the two battery low-voltage connectors respectively.

5. A battery box according to claim 3, characterized in that, The bottom connection unit includes a bottom connection base, a bottom positive electrode, a bottom negative electrode, and a bottom low-voltage connector; the bottom positive electrode, the bottom negative electrode, and the bottom low-voltage connector pass through the bottom connection base; one end of the bottom positive electrode is electrically connected to the positive connector near the bottom frame assembly, and the other end is electrically connected to the electrical connection assembly via a cable; one end of the bottom negative electrode is electrically connected to the negative connector near the bottom frame assembly, and the other end is electrically connected to the electrical connection assembly via a cable; one end of the bottom low-voltage connector is electrically connected to the battery low-voltage connector near the bottom frame assembly, and the other end is electrically connected to the electrical connection assembly via a cable.

6. A battery box according to claim 3, characterized in that, The top connection unit includes a top connection seat, a top low-voltage connector, and a top clearance groove; the top low-voltage connector and the top connection seat are connected; two top clearance grooves are respectively disposed on both sides of the top low-voltage connector; the top low-voltage connector is electrically connected to the adjacent battery low-voltage connector; one top clearance groove corresponds to and accommodates a portion of the adjacent positive connector; one top clearance groove corresponds to and accommodates a portion of the adjacent negative connector.

7. A battery box according to claim 1, characterized in that, The battery box also includes a temperature control component; the temperature control component includes a temperature controller, a temperature control tube, and a liquid replenisher; the battery unit also includes a heat exchanger; the heat exchanger is connected to the battery unit; one end of the temperature control tube is connected to the temperature controller, and the other end is connected to the heat exchanger; the temperature controller is disposed in the hollow cavity formed by the bottom frame assembly; The temperature controller and the electrical connection assembly are electrically connected; the replenishing device is connected to the temperature controller through the temperature control tube.

8. A battery box according to claim 1, characterized in that, The electrical connection assembly includes a control box and a second electrical connection unit; the control box and the second electrical connection unit are electrically connected; the second electrical connection unit is electrically connected to the battery unit through the bottom connection unit.

9. A battery box according to claim 1, characterized in that, The top frame assembly includes a top side frame and a top connecting beam; two top side frames are spaced apart; each end of the top connecting beam is connected to one of the top side frames; the top side frames and the top connecting beam form a hollow frame.

10. A battery box according to claim 9, characterized in that, The bottom frame assembly includes bottom side frames and bottom connecting beams; two bottom side frames are spaced apart; each end of the bottom connecting beam is connected to one of the bottom side frames; the bottom side frames and the bottom connecting beams form a hollow frame.

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