Energy Storage Cabinet

Abstract

The energy storage cabinet (200) comprises a cabinet (60) having a first space (40) and a second space (41) formed therein, a plurality of battery modules (201) arranged in the first space (40), where the plurality of battery modules (201) are stacked in a first direction of the energy storage cabinet (200) and the first space (40) and the second space (41) are arranged side by side in a second direction perpendicular to the first direction, and a control unit (1000) arranged in the second space (41) and electrically connected to the battery modules (201).

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to Chinese Patent Application No. 2022210571428, filed on April 29, 2022, the entirety of which is incorporated herein by reference.

[0002] The present disclosure relates to the field of energy storage cabinets, and more particularly to energy storage cabinets. [Background technology]

[0003] In the related art, a space for installing a battery module and a control unit is defined in an existing energy storage cabinet, but interference between the battery module and the control unit may easily occur, the assembly of components in the energy storage cabinet is not compact, and the volume of the energy storage cabinet becomes large. Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art. To achieve this goal, one of the aims of the present disclosure is to propose an energy storage cabinet, which can separate a control unit from a battery module to avoid interference therebetween, and also enable compact assembly of the control unit and multiple battery modules, which helps to reduce the volume of the energy storage cabinet. [Means for solving the problem]

[0005] The energy storage cabinet according to the present disclosure includes a cabinet body having a first space and a second space formed therein, a plurality of battery modules, the plurality of battery modules being arranged in the first space and stacked in a first direction of the energy storage cabinet, and the first space and the second space being arranged side by side in a second direction perpendicular to the first direction, and a control unit being arranged in the second space and electrically connected to the battery modules.

[0006] The energy storage cabinet according to the present disclosure can separate the control unit from the battery modules to avoid interference between them by arranging the control unit and the battery modules in separate spaces, and also allows for compact assembly of the control unit and multiple battery modules, which helps to reduce the overall volume of the energy storage cabinet.

[0007] Additional aspects and advantages of the present disclosure will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practice of the present disclosure. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is an exploded view of a battery module according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a schematic diagram of the internal structure of a battery module according to one embodiment of the present disclosure. [Figure 3] FIG. 1 is a schematic diagram of a battery module according to one embodiment of the present disclosure. [Figure 4] FIG. 2 is a schematic diagram of a battery module without ventilation panels, according to one embodiment of the present disclosure. [Figure 5] FIG. 2 is a schematic assembly diagram of battery cells and side plates of a battery module according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a schematic diagram illustrating the relative positions of the drive fan and heat sink of a battery module according to one embodiment of the present disclosure. [Figure 7]FIG. 2 is a schematic assembly diagram of a battery cell and a heat sink of a battery module according to one embodiment of the present disclosure. [Figure 8] FIG. 8 is an enlarged view of section M in FIG. 7. [Figure 9] FIG. 2 is a side view of a heat sink of a battery module according to one embodiment of the present disclosure. [Figure 10] FIG. 2 is a front view of a heat sink of a battery module according to an embodiment of the present disclosure. [Figure 11] FIG. 2 is a schematic diagram of a battery cell of a battery module according to one embodiment of the present disclosure. [Figure 12] FIG. 2 is a schematic assembly diagram of a heat dissipating end plate and a driving fan according to an embodiment of the present disclosure. [Figure 13] FIG. 10 is a schematic view of a heat dissipating end plate and drive fan assembly from another angle, according to an embodiment of the present disclosure. [Figure 14] FIG. 10 is a schematic diagram of a second side plate and a fixing bracket according to an embodiment of the present disclosure. [Figure 15] FIG. 10 is a schematic assembly view of a second side plate and a fixing bracket according to an embodiment of the present disclosure. [Figure 16] FIG. 2 is a schematic diagram of a top cover according to one embodiment of the present disclosure. [Figure 17] FIG. 1 is a front view of a support beam according to one embodiment of the present disclosure. [Figure 18] FIG. 10 is a top view of a support beam according to one embodiment of the present disclosure. [Figure 19] FIG. 2 is a schematic assembly diagram of a battery cell and a connecting piece according to one embodiment of the present disclosure. [Figure 20] FIG. 1 is a schematic assembly view of a connecting piece and a busbar mounting bracket according to an embodiment of the present disclosure. [Figure 21] FIG. 2 is a partial enlarged view of a connection piece and busbar mounting bracket assembly according to an embodiment of the present disclosure. [Figure 22] FIG. 2 is a schematic assembly diagram of a heat dissipating end plate, a driving fan, and an information collector according to one embodiment of the present disclosure. [Figure 23]1 is a schematic diagram of an assembly of an electrical connection component and a connection terminal according to one embodiment of the present disclosure. [Figure 24] 10 is a schematic view of an assembly of an electrical connection component and a connection terminal from another angle according to an embodiment of the present disclosure. [Figure 25] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 26] FIG. 2 is an exploded view of a conductive bar and a connection terminal according to one embodiment of the present disclosure. [Figure 27] FIG. 2 is a schematic diagram of an assembly of a conductive bar and a connection terminal according to one embodiment of the present disclosure. [Figure 28] FIG. 1 is an exploded view of a conductive bar and insulating cover according to one embodiment of the present disclosure. [Figure 29] FIG. 2 is a schematic diagram of an assembly of a conductive bar and an insulating cover according to one embodiment of the present disclosure. [Figure 30] FIG. 2 is an exploded view of electrical connection components and connection terminals on a battery module according to one embodiment of the present disclosure. [Figure 31] FIG. 2 is a schematic assembly diagram of electrical connection components and connection terminals on a battery module according to one embodiment of the present disclosure. [Figure 32] FIG. 1 is a schematic diagram of a ventilation panel according to one embodiment of the present disclosure. [Figure 33] FIG. 1 is a schematic diagram of an energy storage cabinet according to one embodiment of the present disclosure. [Figure 34] FIG. 1 illustrates a cross-sectional view of an energy storage cabinet according to one embodiment of the present disclosure. [Figure 35] FIG. 1 illustrates an internal structural view of an energy storage cabinet according to one embodiment of the present disclosure. [Figure 36] FIG. 1 is a schematic diagram of an energy storage cabinet without battery modules installed, according to one embodiment of the present disclosure. [Figure 37] FIG. 4 is an exploded view of FIG. 3. [Figure 38] FIG. 33 is a partial enlarged view of the ventilation panel of FIG. 32. [Figure 39] FIG. 1 is a front view of a ventilation panel according to one embodiment of the present disclosure. [Figure 40] FIG. 10 is a bottom view of a ventilation panel according to one embodiment of the present disclosure. [Figure 41] FIG. 41 is a partially enlarged view of FIG. 40. [Figure 42] FIG. 10 is a bottom view of a ventilation panel according to another embodiment of the present disclosure. [Figure 43] FIG. 43 is an enlarged view of a partial structure of FIG. 42. [Figure 44] FIG. 10 is a front view of a ventilation panel according to yet another embodiment of the present disclosure. [Figure 45] FIG. 10 is a front view of a ventilation panel according to another embodiment of the present disclosure. [Figure 46] FIG. 10 is a front view of a ventilation panel according to another embodiment of the present disclosure. [Figure 47] FIG. 10 is a close-up view of the ventilation panel at the second mounting portion according to an embodiment of the present disclosure. [Figure 48] FIG. 10 is a close-up view of a heat dissipating end plate at a first mounting portion according to an embodiment of the present disclosure. [Figure 49] FIG. 1 is a schematic diagram of an energy storage cabinet according to one embodiment of the present disclosure. [Figure 50] FIG. 2 is a schematic diagram of a driving fan and an information collector according to one embodiment of the present disclosure. [Figure 51] FIG. 1 is a schematic diagram of a connection between information collectors of two adjacent battery modules according to one embodiment of the present disclosure. [Figure 52] FIG. 10 is a schematic diagram of an information collector connection between two adjacent battery modules according to another embodiment of the present disclosure. [Figure 53] FIG. 2 is a schematic assembly diagram of a battery module, a control unit, positive power lines, and negative power lines according to an embodiment of the present disclosure. [Figure 54] FIG. 1 is a schematic diagram of an energy storage cabinet filled with battery modules according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009]

[0023] Below, a detailed description of embodiments of the present disclosure is provided, along with examples of these embodiments shown in the accompanying drawings. Throughout the drawings, the same or similar reference numerals indicate the same or similar components, or components having the same or similar functions. The embodiments described below with reference to the drawings are merely exemplary and are intended to explain the present disclosure, but should not be construed as limiting the present disclosure.

[0010] The following is a description of an energy storage cabinet 200 according to an embodiment of the present disclosure with reference to Figures 1 to 54. The energy storage cabinet 200 can supply power to other electrical devices. A battery module 201 can be installed inside the energy storage cabinet to supply power to other electrical devices.

[0011] As shown in FIGS. 1 to 52 , an energy storage cabinet 200 according to an embodiment of the present disclosure includes a control unit 1000, a cabinet 60, and a plurality of battery modules 201. The plurality of battery modules 201 are installed inside the cabinet 60 and stacked in a first direction of the energy storage cabinet 200. When the energy storage cabinet 200 is placed in the direction shown in FIG. 35 , the first direction of the energy storage cabinet 200 refers to the vertical direction of the energy storage cabinet 200, i.e., the plurality of battery modules 201 are stacked vertically within the energy storage cabinet 200. Within the cabinet 60, a first space 40 and a second space 41 are formed, which are arranged side by side in a second direction perpendicular to the first direction. The first space 40 and the second space 41 can also be understood as being arranged side by side in the second direction of the energy storage cabinet 200, and the first space 40 and the second space 41 can be arranged adjacent to each other, i.e., the first space 40 and the second space 41 are arranged adjacent to each other. 35 , the second direction of the energy storage cabinet 200 may point to the left-right direction of the energy storage cabinet 200. The first space 40 is used to install the battery modules 201, and multiple battery modules 201 are installed in the first space 40. That is, the battery modules 201 are located in the first space 40, and the control unit 1000 is installed in the second space 41. The control unit 1000 is electrically connected to the battery modules 201 and can control the battery modules 201 to deliver electrical energy to an external device.

[0012] Separately arranging the control unit 1000 and the battery modules 201 in different spaces, i.e., the control unit 1000 is arranged in the second space 41 and the battery modules 201 are arranged in the first space 40, allows for clear separation between the control unit 1000 and the battery modules 201, thereby avoiding interference between them. Furthermore, this arrangement facilitates compact assembly of the control unit 1000 and the multiple battery modules 201, contributing to a reduction in the overall volume of the energy storage cabinet 200.

[0013] In some embodiments of the present disclosure, the first space 40 and the second space 41 are connected, and the second space 41 is adapted to guide airflow into the first space 40. By arranging the first space 40 and the second space 41 side by side along the second direction of the energy storage cabinet 200, air can be guided laterally from the second space 41 to the first space 40. After the air enters the first space 40, the air flowing into the first space 40 is evenly distributed to each battery module 201, ensuring that each module receives the same or approximately the same amount of air intake. This improves the consistency of heat dissipation efficiency among the multiple battery modules 201, ensures uniform heat dissipation among the multiple battery modules 201, and enhances the heat dissipation efficiency of the battery modules 201. This further ensures the heat dissipation effect of each battery module 201, uniforms the temperature of the multiple battery modules 201, more effectively prevents thermal runaway in the battery modules 201, and improves the operational safety of the energy storage cabinet 200.

[0014] 35 , a plurality of module mounting racks 401 are provided in the first space 40, and the plurality of module mounting racks 401 are spaced apart sequentially in the first direction. A plurality of battery modules 201 are individually installed in these plurality of module mounting racks 401, and there is a one-to-one correspondence between the plurality of battery modules 201 and the plurality of module mounting racks 401. One battery module 201 is installed in each module mounting rack 401, and the module mounting racks 401 securely support the battery modules 201, ensuring that the battery modules 201 are firmly installed in the first space 40.

[0015] In some embodiments of the present disclosure, as shown in FIGS. 34 and 35 , a third space 42 is formed in the cabinet 60, and the third space 42 communicates with both the first space 40 and the second space 41. Furthermore, the third space 42, the first space 40, and the second space 41 are all arranged to extend in a first direction of the energy storage cabinet 200. The air in the second space 41 is adapted to flow into the first space 40 through the third space 42. After entering the second space 41, the air can be guided laterally from the second space 41 to the third space 42. After entering the third space 42, the air flowing into the third space 42 is evenly distributed to each battery module 201, ensuring that each battery module receives the same or approximately the same amount of air intake, thereby achieving balanced air intake. This further improves the consistency of heat dissipation efficiency among the battery modules 201, and further ensures uniform heat dissipation among the battery modules 201. It also enhances the effective cooling performance of each module. Furthermore, a balanced temperature is maintained among the battery modules 201, which more effectively prevents thermal runaway and enhances the operational safety of the energy storage cabinet 200.

[0016] In some embodiments of the present disclosure, as shown in Figures 34 and 35, in the second orientation of the energy storage cabinet 200, the first space 40 and the third space 42 are located on the same side of the second space 41, and the third space 42 is adjacent to both the second space 41 and the first space 40. When the energy storage cabinet 200 is placed in the orientation shown in Figure 35, the first space 40 and the third space 42 can be located on the left or right side of the second space 41. The present disclosure uses, as an example, an arrangement in which the first space 40 and the third space 42 are located on the right side of the second space 41. Furthermore, in the third orientation of the energy storage cabinet 200, when the energy storage cabinet 200 is placed in the orientation shown in FIG. 35 , the third orientation of the energy storage cabinet 200 refers to the front-to-rear direction of the cabinet, and the third space 42 is located behind the first space 40. Specifically, the left side of the third space 42 communicates with the second space 41, and the front end of the third space 42 communicates with the first space 40. After entering the second space 41, the air flows toward the rear end of the second space 41. When the air reaches the third space 42, the air flows into the third space 42 from the left side of the third space 42. The air in the third space 42 then flows into the first space 40 through the front end thereof, dissipating heat from the battery module 201 and thereby achieving a cooling effect for the battery module 201.

[0017] In some embodiments of the present disclosure, the energy storage cabinet 200 is equipped with a first connection hole 44, which connects the first space 40 to the second space 41. The first connection hole 44 may be one or more. After entering the second space 41, the air flows into the first space 40 through the first connection hole 44 and exchanges heat with the battery module 201, thereby preventing thermal runaway and improving the operational safety of the energy storage cabinet 200.

[0018] In some embodiments of the present disclosure, there are multiple first connection holes 44 arranged sequentially and spaced apart along the first direction, and each battery module 201 corresponds to at least one first connection hole 44. Air in the second space 41 flows into the first space 40 through the multiple first connection holes 44, allowing the air to be evenly distributed to each battery module 201. This ensures that each battery module 201 receives the same or similar amount of airflow, achieving a balanced air intake effect. This further improves the consistency of heat dissipation efficiency among the multiple battery modules 201 and further ensures uniform heat dissipation among the multiple battery modules 201. It also enhances the effective cooling performance of each module. Furthermore, a balanced temperature is maintained among the multiple battery modules 201, more effectively preventing thermal runaway and improving the operational safety of the energy storage cabinet 200.

[0019] In some embodiments of the present disclosure, as shown in Figures 34 and 35, a third space 42 is formed in the cabinet 60, the third space 42 is connected to the second space 41 via a first connecting hole 44, the first connecting hole 44 is one or more, preferably multiple, and the multiple first connecting holes 44 are all connected to the third space 42 and the second space 41, that is, the third space 42 and the second space 41 are connected via these multiple first connecting holes 44, the first connecting holes 44 are arranged along a first direction, the third space 42 includes a second connecting hole connecting the third space 42 to the first space 40, and air in the second space 41 is suitable to flow into the first space 40 via the third space 42, and one or more second connecting holes exist. Furthermore, the multiple first connection holes 44 are arranged sequentially and spaced apart along the first direction, and at least one first connection hole 44 is positioned at a height corresponding to each battery module 201 in the first direction of the energy storage cabinet 200. Preferably, multiple second connection holes are also present. After air enters the second space 41, the air in the second space 41 flows into the third space 42 through the multiple first connection holes 44, and the air flows into the third space 42 from the side of the second space 41. After air enters the third space 42 through the multiple first connection holes 44, the air in the third space 42 flows into the first space 40 through the second connection hole, allowing the air flowing into the first space 40 to be more evenly distributed to each battery module 201. This ensures that each battery module 201 receives the same or approximately the same amount of air intake, achieving a balanced air intake effect. This further improves the consistency of heat dissipation efficiency among the plurality of battery modules 201 and ensures more uniform heat dissipation among the plurality of battery modules 201. This further ensures the heat dissipation effect of each battery module 201, promotes temperature balance among the modules, and more effectively prevents thermal runaway of the battery modules 201, thus further improving the operational safety of the energy storage cabinet 200.

[0020] Furthermore, there are multiple second connection holes arranged along the first direction, and the multiple second connection holes are spaced apart from one another, with the multiple first connection holes 44 and the multiple second connection holes having a one-to-one correspondence. After air simultaneously flows into the third space 42 through the multiple first connection holes 44, the air in the third space 42 then flows into the first space 40 through the multiple second connection holes. This allows the air flowing into the third space 42 to be more evenly distributed to each battery module 201, ensuring that each battery module 201 receives the same or similar amount of airflow, thereby achieving balanced air intake. This further improves the consistency of heat dissipation efficiency among the multiple battery modules 201 and ensures more uniform heat dissipation among the multiple battery modules 201.

[0021] Furthermore, multiple sub-spaces are formed within the third space 42, and the third space 42 has several partition plates, which are spaced apart sequentially in the first direction to divide the third space 42 into multiple sub-spaces. There is a one-to-one correspondence between the multiple sub-spaces, the multiple first connection holes 44, and the multiple second connection holes. Each sub-space communicates with its corresponding first connection hole 44 and second connection hole. After air simultaneously flows into the third space 42 through the multiple first connection holes 44, the air entering through each first connection hole 44 flows into the corresponding sub-space of each first connection hole 44. The air in each sub-space then flows to the corresponding battery module 201 through the corresponding second connection hole. This allows the air flowing into the third space 42 to be more evenly distributed to each battery module 201, ensuring that each battery module 201 receives the same or approximately the same amount of air intake. This can better achieve a balanced air intake effect, thereby further improving the consistency of heat dissipation efficiency among the plurality of battery modules 201 and ensuring more uniform heat dissipation of the plurality of battery modules 201.

[0022] In some embodiments of the present disclosure, the second connection hole is configured as a single hole and is positioned near the center of the third space 42 in the first direction. After air flows into the third space 42, the air then enters the first space 40 through the second connection hole. When the air diffuses in the first direction, this allows the air flowing into the third space 42 to be more evenly distributed to each battery module 201, ensuring that each battery module 201 receives the same or similar amount of airflow. This better achieves balanced air intake. This further improves the consistency of heat dissipation efficiency among the multiple battery modules 201 and ensures more uniform heat dissipation among the multiple battery modules 201.

[0023] In some embodiments of the present disclosure, a third space 42 is formed within the cabinet 60, the third space 42 connecting the first space 40 and the second space 41, air flows from the second space 41 into the third space 42, and the air within the third space 42 flows into the first space 40 to dissipate heat from the battery module 201, thereby promoting rapid temperature reduction.

[0024] 33 to 35 , the energy storage cabinet 200 may further include an air conditioner 50, which may be positioned within the cabinet 60. The air conditioner 50 is equipped with an air outlet 51 and an air inlet 52, the air outlet 51 being connected to the second space 41 and / or the first channel 43 within the cabinet 60, and the air inlet 52 being connected to the first space 40. When the air conditioner 50 is operating, cool air blows into the second space 41 from the air outlet 51 of the air conditioner 50 and then flows into the third space 42 through the multiple first connection holes 44. The cool air then enters the first space 40 from the third space 42 and exchanges heat with the battery modules 201, effectively dissipating heat. Finally, after exchanging heat with the battery modules 201, the heated air is recirculated to the air conditioner 50 via the air inlet 52, maintaining a continuous circulating airflow that efficiently dissipates heat from the battery modules 201, thereby improving the heat dissipation efficiency of the multiple battery modules 201.

[0025] In some embodiments of the present disclosure, the air conditioner 50 is positioned outside the cabinet 60. Such an arrangement prevents the air conditioner 50 from occupying the interior space of the cabinet 60, thereby preserving sufficient assembly space for other components within the cabinet 60.

[0026] In some embodiments of the present disclosure, the dimension of the second space 41 along the first direction is larger than the dimension of the air inlet 52 along the same direction, and this configuration ensures easy alignment between the second space 41 and the air inlet 52 and promotes air flow from the second space 41 to the air inlet 52.

[0027] In some embodiments of the present disclosure, as shown in FIGS. 33 to 35 , a first channel 43 is also formed in the cabinet 60, the first channel 43 and the first space 40 are arranged along a first direction, and the first channel 43 is connected to the first space 40 and / or the third space 42, i.e., the first channel 43 is connected to the first space 40, or the first channel 43 is connected to the third space 42, or both. For illustrative purposes, the present disclosure will cite an example in which the first channel 43 is connected to the third space 42. Furthermore, the cabinet 60 has a base and a top plate spaced apart along the first direction, and the first channel 43 is located between the top plate and the first space 40. When the energy storage cabinet 200 is placed in the orientation shown in FIG. 33 , the first channel 43 is located above the first space 40 and is connected to both the air outlet 51 of the air conditioner 50 and the third space 42. Furthermore, the front end of the first channel 43 is connected to the air outlet 51 of the air conditioner 50, and the rear end of the first channel 43 is connected to the third space 42. When the air conditioner 50 is operating, cool air is blown out from the air outlet 51 of the air conditioner 50, with a portion of the air entering the second space 41 and another portion entering the first channel 43. After entering the first channel 43, the air flows along the first channel 43 to the upper end of the third space 42. From there, the cool air flows downward toward the lower end of the third space 42, participating in the heat dissipation cycle and providing additional power to the battery module 201. This improves the heat dissipation efficiency of the battery module 201 and allows heat to be removed from the battery module 201 more quickly.

[0028] In some embodiments of the present disclosure, as shown in FIGS. 33 and 35 , the end of the first space 40 adjacent to the air inlet 52 is open to form a first opening, and the end of the second space 41 adjacent to the air outlet 51 is also open to form a second opening. When the energy storage cabinet 200 is placed in the orientation shown in FIG. 35 , the front end of the first space 40 is open to form the first opening, and the front end of the second space 41 is open to form the second opening. Furthermore, the cabinet 60 includes a cabinet body 61 and an opening / closing door 62. The cabinet body 61 includes a base and a top plate and defines an installation chamber that is open at one end, specifically the front end. The first space 40, the second space 41, the third space 42, and the first channel 43 are formed within this chamber. The opening / closing door 62 serves to open or close the installation chamber, and the air conditioner 50 is attached to the opening / closing door 62. Furthermore, a partition 63 is provided in the installation chamber to divide the installation chamber into the first space 40, the second space 41, the third space 42, and the first channel 43. Since the air conditioner 50 is installed on the opening / closing door 62, both the air outlet 51 and the air inlet 52 of the air conditioner 50 are located on the opening / closing door 62. The end of the first space 40 close to the air inlet 52 is open, the end of the second space 41 close to the air outlet 51 is open, and the end of the first channel 43 close to the air inlet 52 is also open, which facilitates the inflow of cool air into the second space 41 and the first channel 43, and the inflow of cool air from the first space 40 into the air inlet 52 of the air conditioner 50.

[0029] Furthermore, the first opening and the second opening are separated by a spacer (not shown), and in the process of air blowing into the second space 41, the air in the first space 40 simultaneously flows toward the air inlet 52 of the air conditioner 50. By using a spacer to separate the open end of the first space 40 from the open end of the second space 41, the inlet and outlet air flows are prevented from interfering with each other. This allows cool air to smoothly flow into the second space 41, and also allows the air that has undergone heat exchange in the first space 40 to smoothly flow into the air conditioner 50. Furthermore, this avoids contributing to noise generated by the energy storage cabinet 200.

[0030] In some embodiments of the present disclosure, the partition 63 is provided with a first connecting hole 44. Because the partition 63 divides the installation chamber into the first space 40, the second space 41, the third space 42, and the first channel 43, positioning the first connecting hole 44 in the partition 63 facilitates communication between the second space 41 and the third space 42 via the first connecting hole 44.

[0031] In some embodiments of the present disclosure, the third space 42 and the first space 40 are disposed in a third direction of the energy storage cabinet 200, where the third direction is perpendicular to both the first direction and the second direction. When the energy storage cabinet 200 is placed in the orientation shown in FIG. 35, the third direction of the energy storage cabinet 200 points in the front-to-back direction in FIG. 35, and this arrangement allows for a more compact internal structure of the energy storage cabinet 200.

[0032] 53 and 54 , the energy storage cabinet 600 may further include a positive power line 1001 and a negative power line 1002. One end of the positive power line 1001 is connected to the control unit 1000, and the other end of the positive power line 1001 is suitable for insertion into the connection terminal 202 of the battery module 201; similarly, one end of the negative power line 1002 is connected to the control unit 1000, and the other end of the negative power line 1002 is suitable for insertion into the connection terminal 202 of the battery module 201. Specifically, a plurality of battery modules 201 are connected in series in order, one end of a positive power line 1001 is electrically connected to the control unit 1000, and the other end is electrically connected to the positive electrode connection terminal 2029 of a battery module 201, and one end of a negative power line 1002 is electrically connected to the control unit 1000, and the other end is electrically connected to the negative electrode connection terminal 2030 of another battery module 201 at the opposite end of the series. This arrangement realizes the electrical connection between the control unit 1000 and the battery modules 201, and can achieve the purpose of the control unit 1000 controlling the battery modules 201.

[0033] Furthermore, the positive power line 1001 and the negative power line 1002 are wire harnesses, and their positions within the energy storage cabinet 600 are adjustable, and the connection ends of the positive power line 1001 and the negative power line 1002 to the battery modules 201 can be appropriately adjusted based on the positions of the battery modules 201 within the energy storage cabinet 600. For example, as shown in FIG. 53 , when the energy storage cabinet 600 is fully loaded with battery modules 201, the positive power line 1001 can be routed to the battery module 201 located at one end and electrically connected to its positive connection terminal 2029, and the negative power line 1002 can be routed to the battery module 201 located at the other end and electrically connected to its negative connection terminal 2030. As shown in FIG. 54, when the energy storage cabinet 600 is not fully loaded with battery modules 201, the positive power line 1001 can be moved to the battery module 201 located at the end and electrically connected to the positive connection terminal 2029 of the battery module 201, and the negative power line 1002 can be moved to the battery module 201 located at the end and electrically connected to the negative connection terminal 2030 of the battery module 201.

[0034] Due to the various usage scenarios and total power consumption of electrical equipment, users have different requirements for the electrical power capacity of the energy storage cabinet 200. Because the energy storage cabinet 200 needs to be used with an inverter, the diverse needs of users lead to various demands on the inverter, and the diverse needs of users lead to various requirements on the inverter. Different brands and models of inverters have different operating voltage ranges, thus creating the need for flexible voltage expansion. In the present disclosure, when different numbers of battery modules 201 are installed in the energy storage cabinet 600, the battery modules 201 and the control unit 1000 can be electrically connected by adjusting the positions of the positive power line 1001 and the negative power line 1002, thereby enabling flexible configuration of the number of battery modules 201 in the energy storage cabinet 600 and obtaining energy storage cabinets 600 with different capacities to meet different needs of users.

[0035] Furthermore, one end of the positive power line 1001 and one end of the negative power line 1002 are both located in the second space 41, and the other ends of both lines are both located in the first space 40. Furthermore, as shown in FIGS. 53 and 54 , the partition 63 is provided with a wiring hole 1008 that penetrates the partition 63, allowing the positive power line 1001 and the negative power line 1002 to pass through. As a result, one end of the positive power line 1001 and one end of the negative power line 1002 are both located in the second space 41, and the other end of the positive power line 1001 and the other end of the negative power line 1002 are both located in the first space 40. This arrangement enables the positive power line 1001 and the negative power line 1002 to be connected between the control unit 1000 and the battery module 201.

[0036] It should be noted that the positive power line 1001 can be connected to the conductive bar 10, and the electrical connection between the positive power line 1001 and the battery module 201 is achieved by inserting the positive connection terminal 2029 of the battery module 201 into the conductive bar 10. The negative power line 1002 can also be connected to the conductive bar 10, and the electrical connection between the negative connection terminal 2030 and the battery module 201 is achieved by inserting the negative connection terminal 2030 of the battery module 201 into the conductive bar 10.

[0037] As shown in FIGS. 3 to 5 , a battery module 201 according to an embodiment of the present disclosure includes a battery unit 220, a support beam 219, a first side plate 211, and a second side plate 212. The battery unit 220 includes a plurality of battery cells 208, which are sequentially arranged along the thickness direction of the battery cells 208. A first air duct 210 is formed between at least two adjacent battery cells 208, extending along a third direction perpendicular to both the first and second directions, and the first air duct 210 communicates with the first space 40. When the battery unit 220 is placed in the orientation shown in FIG. 7 , the thickness direction of the battery cells 208 corresponds to the left-right direction shown in FIG. 7 . The battery unit 220 is positioned between the first side plate 211 and the second side plate 212. 2 and 4 , the support beams 219 extend along the thickness direction of the battery cells 208 and connect the first side plate 211 and the second side plate 212 to firmly sandwich the battery unit 220. Furthermore, the support beams 219 are positioned between the first side plate 211 and the second side plate 212 to further sandwich the battery unit 220. The support beams 219 are provided on at least one side in the width direction of the battery unit 220. When the battery unit 220 is placed in the direction shown in FIG. 2 , the width direction of the battery cells 208 corresponds to the vertical direction of the battery module 201 in FIG. 2. The support beams 219 can be installed on either the upper or lower side or both sides of the battery unit 220. Preferably, the support beams 219 are installed on both the upper and lower sides of the battery unit 220.

[0038] 4, when the battery module 201 is placed in the orientation shown in FIG. 4, the first side plate 211 and the second side plate 212 are disposed on the left and right sides of the battery unit 220, respectively. The present disclosure provides an example in which the first side plate 211 is installed on the left side of the battery unit 220 and the second side plate 212 is installed on the right side of the battery unit 220. The support beam 219 connects the first side plate 211 and the second side plate 212, and the battery unit 220 is placed between the first side plate 211 and the second side plate 212. Therefore, after the support beam 219 is assembled, the first side plate 211 and the second side plate 212 can firmly hold the battery unit 220. This allows the battery unit 220 to be fixed within the battery module 201. There is no need to install brackets inside the battery module 201 to secure the battery cells 208, which increases the space available for arranging more battery cells 208 within the battery module, thereby increasing the energy density of the battery module 201. For a battery module 201 with the same energy density, the battery module 201 of the present disclosure has a smaller volume. Furthermore, by providing support beams 219 on both the upper and lower sides of the battery unit 220, the support beams 219 on the lower side of the battery unit 220 can support the battery unit 220, thereby firmly sandwiching the battery unit 220 between the first side plate 211 and the second side plate 212. At the same time, sandwiching the battery unit 220 using the support beams 219, the first side plate 211, and the second side plate 212 simplifies the structure of the battery module 201, improving the assembly efficiency of the battery module 201 and, therefore, the production efficiency of the battery module 201.

[0039] Therefore, the battery unit 220 can be clamped by cooperation between the battery unit 220, the first side plate 211, the second side plate 212, and the support beam 219, simplifying the structure of the battery module 201 and improving the assembly efficiency of the battery module 201. In addition, there is no need to install brackets to fix the battery cells 208 inside the battery module 201. More battery cells 208 can be arranged in the battery module 201, which improves the energy density of the battery module 201. If the battery module 201 has the same energy density, the volume of the battery module 201 becomes smaller.

[0040] In some embodiments of the present disclosure, as shown in FIGS. 1 and 3 , the battery module 201 may further include a top cover 213 and a bottom cover 214, and in the width direction of the battery cells 208, the top cover 213 and the bottom cover 214 are located on two sides of the battery unit 220, respectively. When the battery module 201 is placed in the direction shown in FIG. 1 , in the vertical direction shown in FIG. 1 , the top cover 213 is located on the upper side of the battery unit 220, and the bottom cover 214 is located on the lower side of the battery unit 220. A plurality of battery cells 208 are arranged between the first and second side plates 211 and 212, and both the top cover 213 and the bottom cover 214 are connected to the first and second side plates 211 and 212, and further, both the top cover 213 and the bottom cover 214 are connected between the first and second side plates 211 and 212, or both the first and second side plates 211 and 212 are connected between the top cover 213 and the bottom cover 214, preferably, both the top cover 213 and the bottom cover 214 are connected between the first and second side plates 211 and 212. Due to the separating effect of the support beam 219, the second air duct 216 is formed between the surface of the battery unit 220 close to the top cover 213 and the top cover 213, and / or between the surface of the battery unit 220 close to the bottom cover 214 and the bottom cover 214; in other words, due to the separating effect of the support beam 219, the second air duct 216 is formed between the surface of the battery unit 220 close to the top cover 213 and the top cover 213, or between the surface of the battery unit 220 close to the bottom cover 214 and the bottom cover 214. The second air duct 216 can be formed between a surface close to the top cover 214 of the battery unit 220 and the bottom cover 214, or between a surface close to the top cover 213 of the battery unit 220 and the top cover 213, and between a surface close to the bottom cover 214 of the battery unit 220 and the bottom cover 214, and preferably, the second air duct 216 is formed between a surface close to the top cover 213 of the battery unit 220 and the top cover 213, and between a surface close to the bottom cover 214 of the battery unit 220 and the bottom cover 214.In other words, the second air duct 216 is formed between the top cover 213 and the battery cells 208 and / or between the bottom cover 214 and the battery cells 208, and preferably the second air duct 216 is present in both locations and communicates with the first space 40.

[0041] Specifically, the support beams 219 are provided between the surface of the battery unit 220 close to the top cover 213 and the top cover 213, and between the surface of the battery unit 220 close to the bottom cover 214 and the bottom cover 214. The support beams 219 between the battery unit 220 and the top cover 213 separate them to form a second air duct 216 between the battery unit 220 and the top cover 213. Similarly, the support beams 219 between the battery unit 220 and the bottom cover 214 separate them to form another second air duct 216 between the battery unit 220 and the bottom cover 214. Air outside the battery unit 220 can flow into the second air duct 216, and after flowing into the second air duct 216, the air can exchange heat with the battery unit 220 and then flow out of the battery module 201, thereby removing heat from the battery cells 208 and achieving a cooling effect, and improving the heat dissipation efficiency of the battery cells 208. Furthermore, by disposing the second air duct 216 between the battery unit 220 and the top cover 213, and between the battery unit 220 and the bottom cover 214, the temperature difference between the two sides of a single battery cell 208 can be controlled within 4 degrees, so that the temperature difference between different regions of the battery cell 208 can be more balanced.

[0042] In some embodiments of the present disclosure, as shown in Figures 2, 4, and 5, the support beam 219 contacts both the surface close to the top cover 213 of the battery unit 220 and the top cover 213, and / or both the surface close to the bottom cover 214 of the battery unit 220 and the bottom cover 214, dividing the second air duct 216 into multiple sub-air ducts 217, and the support beam 219 has an air passage 218 connecting two adjacent sub-air ducts 217. Furthermore, when the battery module 201 is placed in the orientation shown in FIG. 1 , the support beams 219 positioned between the battery unit 220 and the top cover 213 are in contact with both the upper surface of the battery unit 220 and the top cover 213, and similarly, the support beams 219 positioned between the battery unit 220 and the bottom cover 214 are in contact with both the lower surface of the battery unit 220 and the bottom cover 214, and both sets of support beams 219 divide the second air duct 216 into multiple sub-air ducts 217, which are arranged sequentially along the length of the battery cells 208.

[0043] Air outside the battery module 201 flows into the sub-air duct 217, and can then flow into an adjacent sub-air duct 217 via the air passage 218. As the air flows, it can exchange heat with the battery unit 220, thereby removing heat from the battery cells 208, and then flow out of the battery module 201. Furthermore, by bringing the support beams 219 into contact with the battery unit 220, the support beams 219 located below the battery unit 220 can support the battery unit 220. Meanwhile, the support beams 219 located below the battery unit 220 and the support beams 219 located above the battery unit 220 sandwich the battery unit 220, thereby allowing the battery unit 220 to be firmly assembled within the battery module 201.

[0044] 2 and 4, a plurality of support beams 219 can be arranged between the battery unit 220 and the top cover 213, spaced apart from one another along the length of the battery cells 208 (i.e., the front-to-rear direction in FIG. 4), and a plurality of support beams 219 can also be arranged between the battery unit 220 and the bottom cover 214, with the plurality of support beams 219 between the battery unit 220 and the bottom cover 214 spaced apart from one another along the length of the battery cells 208. By simultaneously sandwiching the battery unit 220 between the plurality of support beams 219 and by sandwiching the battery unit 220 between the first side plate 211 and the second side plate 212, the battery unit 220 can be more firmly assembled within the battery module 201, and the first side plate 211 and the second side plate 212 can also firmly sandwich the battery unit 220.

[0045] In some embodiments of the present disclosure, as shown in Fig. 4, the support beam 219 spans all of the battery cells 208 in the thickness direction of the battery cells 208. As shown in Fig. 4, the leftmost end of the support beam 219 is connected to the first side plate 211, and the rightmost end is connected to the second side plate 212. As the support beam 219 spans all of the battery cells 208 in the thickness direction of the battery cells 208 and is connected to the first plate 211 and the second plate 212, the support beam 219 enables the first side plate 211 and the second side plate 212 to firmly sandwich the battery unit 220.

[0046] 5 , the inner surface of the first side plate 211 and / or the second side plate 212 close to the battery unit 220 may be equipped with a limiting boss 221 that protrudes toward the battery unit 220. It may also be understood that the limiting boss 221 can be installed on the inner surface of either the first side plate 211, the second side plate 212, or both close to the battery unit 220, and that after the support beam 219, the first side plate 211, and the second side plate 212 are assembled, the limiting boss 221 can compress the battery unit 220, thereby fixing the battery unit 220 within the battery module 201.

[0047] Furthermore, the support beam 219 is overlapped with the limiting boss 221. Specifically, as shown in FIG. 5, the two ends of the support beam 219 located between the battery unit 220 and the top cover 213 are overlapped with the upper surfaces of the limiting bosses 221 of the first side plate 211 and the second side plate 212, respectively, and the limiting bosses 221 provide support for the support beam 219 between the battery unit 220 and the top cover 213, ensuring reliable assembly of the first side plate 211 and the second side plate 212. Similarly, the two ends of the support beam 219 located between the battery unit 220 and the bottom cover 214 are respectively overlapped on the undersides of the limiting bosses 221 of the first side plate 211 and the second side plate 212, and the limiting bosses 221 provide support for the support beam 219 between the battery unit 220 and the bottom cover 214, thereby preventing the support beam 219 between the battery unit 220 and the bottom cover 214 from excessively compressing the battery cells 208.

[0048] 5 , a third air duct 222 extending along the length of the battery cell 208 is formed in the restricting boss 221, and the restricting boss 221 is in contact with the battery unit 220, so that after the air flows into the third air duct 222, the air can exchange heat with the battery unit 220. When the air flows along the third air duct 222, the air can continuously remove heat from the battery unit 220, thereby achieving the effect of cooling the battery unit 220.

[0049] 5 , both the first side plate 211 and the second side plate 212 are provided with mounting holes 223 designed for assembling the support beams 219, with the axes of the mounting holes 223 extending in the thickness direction of the battery cells 208. The mounting holes 223 on the first side plate 211 penetrate the plate in its thickness direction, and similarly, the mounting holes 223 on the second side plate 212 penetrate the second side plate 212 in its thickness direction. First fasteners 224 pass through the mounting holes 223 and engage with the support beams 219, allowing the first side plate 211 and the second side plate 212 to firmly clamp the battery unit 220. There are a plurality of first fasteners 224 and a plurality of mounting holes 223, each corresponding to one hole, and the first fasteners 224 may be bolts or screws. The first fasteners 224 pass through corresponding mounting holes 223 from the outside of the first side plate 211 and the second side plate 212, and are then threadedly connected to the support beam 219, thereby fixing the first side plate 211 and the second side plate 212 together and allowing these side plates to firmly clamp the battery unit 220.

[0050] In some embodiments of the present disclosure, as shown in FIGS. 7 and 8 , the battery module 201 may further include a heat sink 209, where the heat sink 209 is disposed between at least two adjacent battery cells 208 among the plurality of battery cells 208 and is in contact with the adjacent battery cells 208. The heat sink 209 defines a first air duct 210 extending along the length of the battery cells 208. When the battery module 201 is disposed in the orientation shown in FIG. 7 , the length of the battery cells 208 corresponds to the front-to-rear direction in FIG. 7 . This arrangement allows the contact surface between the heat sink 209 and the battery cells 208 to be a large surface of the battery cells 208, which can improve the heat dissipation effect of the heat sink 209 on the battery cells 208. Furthermore, air (such as cool air) can flow from the battery module 201 into the first air duct 210. When the cool air flows through the first air duct 210, it exchanges heat with the battery cells 208 and removes the heat, thereby achieving the effect of cooling the battery cells 208. After the air in the first air duct 210 flows out of the first air duct 210, the air flows out of the battery modules 201 and can release heat from the battery modules 201.

[0051] Furthermore, the first air duct 210 is connected to the first space 40. After the cool air flows from the third space 42 into the first space 40, the cool air can then enter the first air duct 210. When the cool air flows through the first air duct 210, the cool air exchanges heat with the battery cells 208 and removes the heat, thereby achieving the effect of cooling the battery cells 208. After the air in the first air duct 210 flows out of the first air duct 210, the air can flow into the air conditioner 50 through the air inlet 52.

[0052] In some embodiments of the present disclosure, as shown in FIGS. 5 , 7 , and 8 , the heat sink 209 can define multiple first air ducts 210, which are arranged sequentially along the width direction of the battery cells 208. When the battery module 201 is placed in the orientation shown in FIG. 7 , the width direction of the battery cells 208 points to the vertical direction in FIG. 7. This arrangement allows air to flow smoothly through the different first air ducts 210 and prevents vortex formation within the heat sink 209, thereby ensuring a consistent airflow velocity and facilitating the outflow of air from the heat sink 209, removing heat from the battery cells 208, and also avoiding noise generated by the air within the heat sink 209.

[0053] In some embodiments of the present disclosure, as shown in FIGS. 7 and 8 , a plurality of battery cells 208 are divided into a plurality of battery cell groups, each group including at least one battery cell 208. Furthermore, as shown in FIG. 7 , two battery cells 208 constitute one battery cell group, and two battery cells 208 positioned at the ends each form one battery cell group. A heat sink 209 is positioned between each pair of adjacent battery cell groups. This arrangement not only ensures that each battery cell 208 is in contact with at least one heat sink 209 for effective heat dissipation, but also ensures that the heat sink 209 is attached over a large area on the side of the battery cell 208, thereby increasing the heat dissipation area of ​​the battery cell 208 and reducing the temperature difference between various regions of the battery cell 208. At the same time, this layout enhances the structural stability and safety of the battery module 201 by providing support to the battery cells 208.

[0054] In some embodiments of the present disclosure, as shown in FIGS. 4 and 12 , the battery module 201 may further include a drive fan 2061. The drive fan 2061 is provided at one end of the battery unit 220 along the length direction of the battery cells 208 and is spaced apart from the battery unit 220. The drive fan 2061 drives the air flowing through the first air duct 210. Furthermore, as shown in FIG. 4 , when the battery module 201 is oriented as shown in FIG. 4 , the drive fan 2061 is located at the front end of the battery unit 220. Different types of fans may be selected as the drive fan 2061 based on specific heat dissipation requirements. When the drive fan 2061 is operating, the blades of the drive fan 2061 rotate, and under the driving of the drive fan 2061, the air in the first air duct 210 flows along the first air duct 210 toward the drive fan 2061, the heat generated by the battery cells 208 is removed by the air flow, and the air carried out by the drive fan 2061 is finally discharged outside the battery module 201. By providing the drive fan 2061, the air flow speed in the first air duct 210 can be increased, and the heat of the battery cells 208 can be removed more quickly, thereby improving the heat exchange efficiency of the heat sink 209.

[0055] Furthermore, the air conditioner 50 can be replaced with another type of blower, which should be connected to the battery management system in the same way as the air conditioner, and the blower should be located inside the cabinet 60 and outside the drive fan 2061.

[0056] In some embodiments of the present disclosure, as shown in FIGS. 4 and 6 , a plurality of drive fans 2061 may be installed spaced apart along the thickness direction of the battery cells 208. It should be noted that the number of drive fans 2061 is positively correlated with the number of battery cells 208 in the battery module 201. That is, the more battery cells 208 installed in the battery module 201, the more drive fans 2061 are required, and vice versa. For illustrative purposes, the present disclosure takes an example in which two drive fans 2061 are installed in the battery module 201. By installing multiple drive fans 2061, the coverage area of ​​the drive fans 2061 can be enlarged, thereby ensuring that the airflow through the first air ducts 210 of each heat sink 209 in the battery module 201 is increased, thereby further improving the heat dissipation efficiency of the battery module 201.

[0057] 6 , the spacing distance A between any two adjacent driving fans 2061 along the thickness direction of the battery cell 208 satisfies the relationship 90 mm≦A≦100 mm, for example, the spacing distance between two adjacent driving fans 2061 is 98 mm. Setting the spacing distance A between two adjacent driving fans 2061 along the thickness direction of the battery cell 208, i.e., the left-right direction in FIG. 6 , ensures that the driving fans 2061 can drive airflow in the first air duct 210 located between the two driving fans 2061, allowing for faster removal of heat from the battery cell 208 and therefore ensuring the heat exchange efficiency of the heat sink 209.

[0058] 6 , in some embodiments of the present disclosure, the spacing distance B between the centers of any two adjacent drive fans 2061 along the thickness direction of the battery cell 208 satisfies the relationship 180 mm≦B≦200 mm, for example, the spacing distance B between the centers of two adjacent drive fans 2061 is 190 mm. Such an arrangement can further ensure that the drive fans 2061 can drive the airflow in the first air duct 210 located between the two drive fans 2061, allowing for faster removal of heat from the battery cell 208 and therefore ensuring the heat exchange efficiency of the heat sink 209.

[0059] In some embodiments of the present disclosure, as shown in FIG. 6 , the spacing distance C between the drive fan 2061 and the battery cell 208 along the length of the battery cell 208 satisfies the relationship 40 mm≦C≦50 mm. For example, the spacing distance between the drive fan 2061 and the battery cell 208 is 45.6 mm. Furthermore, the spacing distance between the drive fan 2061 and the heat sink 209 along the length of the battery cell 208 is also C. This arrangement further ensures that the drive fan 2061 can drive the airflow in the first air duct 210 located between the two drive fans 2061, allowing for more rapid removal of heat from the battery cell 208 and therefore ensuring the heat exchange efficiency of the heat sink 209. As a result, the spacing dimensions between the drive fan 2061 and the battery cell 208 and between the drive fan 2061 and the heat sink 209 are suitable for efficient heat dissipation.

[0060] 6 , in some embodiments of the present disclosure, along the thickness direction of the battery cell 208, a distance D between the outermost surface of the heat sink 209 away from the drive fan 2061 and the adjacent drive fan 2061 satisfies the relationship 60 mm≦D≦70 mm, for example, the distance D between the outermost surface of the heat sink 209 away from the drive fan 2061 and the adjacent drive fan 2061 is 65.2 mm. Such an arrangement ensures that the air in each first air duct 210 flows while being driven by the drive fan 2061, enhancing temperature uniformity across various regions of the battery module 201 and thereby achieving uniform heat dissipation of the battery module 201.

[0061] It should be noted that the larger the size of the driving fan 2061, the faster the airflow speed in the first air duct 210. In the width direction of the battery cells 208, the size of the driving fan 2061 is equal to or larger than the width direction of the battery cells 208. In this case, the dimension of the driving fan 2061 in the width direction of the battery cells 208 achieves 100% coverage of the battery cells 208, and the operating area of ​​the driving fan 2061 is circular, thereby achieving the maximum airflow in the first air duct 210 and ensuring the heat dissipation effect of the battery module 201. Furthermore, in the width direction of the battery module 201, the dimension of the driving fan 2061 accounts for 40% to 50% of the width dimension of the battery module 201. For example, the dimension of the driving fan 2061 accounts for 44.62% of the width dimension of the battery module 201.

[0062] In some embodiments of the present disclosure, in the thickness direction of the battery cell 208, the area of ​​the outer surface (i.e., the large surface) of the battery cell 208 is S1, and the contact area between the heat sink 209 and the adjacent battery cell 208 is S2, which satisfies the relationship 0.90≦S2 / S1≦1, for example, S2 / S1 is 0.97. This arrangement can ensure the contact area between the heat sink 209 and the adjacent battery cell 208 and can improve the heat exchange efficiency between the heat sink 209 and the battery cell 208.

[0063] In some embodiments of the present disclosure, as shown in FIGS. 4 and 12 , the battery module 201 may further include a heat-dissipating end plate 206, on which a driving fan 2061 is mounted and which is fixedly connected to the first side plate 211 and / or the second side plate 212. It may also be understood that the heat-dissipating end plate 206 can be connected to the first side plate 211, the second side plate 212, or both. As shown in FIG. 4 , the heat-dissipating end plate 206 is installed at the front ends of the first side plate 211 and the second side plate 212 and connected to both. The heat-dissipating end plate 206 can be attached to the first side plate 211 and the second side plate 212 using bolts. Furthermore, the heat-dissipating end plate 206 is spaced apart from the battery unit 220. By attaching the driving fan 2061 to the heat dissipation end plate 206, the air in the first air duct 210 can be directed along the first air duct 210 toward the front of the battery module 201, and the driving fan 2061 can also be reliably positioned within the battery module 201.

[0064] 1 and 19 to 21 , the battery module 201 may further include connection pieces 2083 and busbar mounting brackets 2084, where positive and negative posts are provided at two ends of the battery cells 208 in the longitudinal direction of the battery cells 208, respectively. The connection pieces 2083 are connected between the positive and negative posts of two adjacent battery cells 208 to establish electrical connection therebetween. The busbar mounting brackets 2084 are disposed between the heat dissipation end plate 206 and the battery unit 220, and the connection pieces 2083 are installed on the busbar mounting brackets 2084. The busbar mounting brackets 2084 can be fixedly installed on the first side plate 211 and the second side plate 212 using bolts, or can be snapped to the first side plate 211 and the second side plate 212. The specific assembly format is not particularly limited. The heat dissipating end plate 206 is removably attached to the bus bar mounting bracket 2084 , thereby indirectly attaching the heat dissipating end plate 206 to the first side plate 211 and the second side plate 212 .

[0065] 1 and 4 , the battery module 201 may further include a fixing plate 2065, which is attached to the first side plate 211 and / or the second side plate 212. In other words, the fixing plate 2065 may be attached to either the first side plate 211, the second side plate 212, or both. Furthermore, the portion connecting the fixing plate 2065 to the side plates is configured as a flat structure. As shown in FIGS. 2 and 4 , the fixing plate 2065 may be equipped with a handle 2066, particularly located at the end away from the side plates, and the portion connecting the fixing plate 2065 to the handle 2066 is also structured as a flat plate. When handling the battery module 201, personnel can easily lift the battery module 201 by grasping the handle 2066, making it easy to transport. In some embodiments of the present disclosure, the heat dissipating end plate 206 can be fixedly connected to the fixed plate 2065 by installing the heat dissipating end plate 206 to the fixed plate 2065 using bolts.

[0066] 1, the battery module 201 may also include a fixing bracket 2067. The fixing bracket 2067 is attached to the first side plate 211 and / or the second side plate 212. Preferably, the fixing bracket 2067 is provided on both the first side plate 211 and the second side plate 212. The fixing bracket 2067 is positioned between the fixing plate 2065 and the heat-dissipating end plate 206, specifically, on the inner side of the fixing plate 2065. The fixing bracket 2067 serves to limit the movement of the heat-dissipating end plate 206. As shown in FIGS. 1 and 4, the fixing bracket 2067 is provided on both the front end of the first side plate 211 and the front end of the second side plate 212. The fixing bracket 2067 is located between the heat-dissipating end plate 206 and the side plates (i.e., the first side plate 211 and the second side plate 212) in the front-rear direction of the battery module 201. Positioning the fixing bracket 2067 between the heat-dissipating end plate 206 and the side plates allows the heat-dissipating end plate 206 to be spaced apart from the battery unit 220, providing installation space for arranging components such as the connection piece 2083, i.e., the bus bar mounting bracket 2084. Furthermore, due to the restrictive cooperation between the fixing bracket 2067 and the heat-dissipating end plate 206, the fixing bracket 2067 can limit the movement of the heat-dissipating end plate 206 in the width direction of the battery module 201 and ensure reliable assembly between the heat-dissipating end plate 206 and the bus bar mounting bracket 2084. Furthermore, the fixing bracket 2067 is removably connected to the fixing plate 2065 by, for example, bolts or screws, and is firmly fixed thereto. Additionally, the heat dissipating end plate 206 may be attached to a fixed bracket 2067 using bolts or screws.

[0067] 14 , a plug post 2085 is provided on the fixing bracket 2067, and plug holes 2086 are provided on both the first side plate 211 and the second side plate 212. When the fixing bracket 2067 is assembled with the first side plate 211, the plug post 2085 is inserted into the plug hole 2086 of the first side plate 211, and then a bolt is used to secure the fixing bracket 2067 to the first side plate 211. Similarly, when the fixing bracket 2067 is assembled with the second side plate 212, the plug post 2085 is inserted into the plug hole 2086 of the second side plate 211, and then a bolt is used to secure the fixing bracket 2067 to the second side plate 212. This arrangement allows the fixing bracket 2067 to be firmly mounted to the first side plate 211 and the second side plate 212 and facilitates easy assembly and disassembly of the fixing bracket 2067.

[0068] 4 and 13, a positive electrode connection terminal 2029 and a negative electrode connection terminal 2030 are provided on the heat dissipation end plate 206. The positive electrode connection terminal 2029 is connected to all positive output terminals of the battery unit 220, and the negative electrode connection terminal 2030 is connected to all negative output terminals of the battery unit 220. Furthermore, in the thickness direction of the battery cell 208, the positive electrode connection terminal 2029 and the negative electrode connection terminal 2030 are disposed near the same side closer to the heat dissipation end plate 206. For example, as shown in FIG. 4, both the positive electrode connection terminal 2029 and the negative electrode connection terminal 2030 are positioned near the left side of the heat dissipation end plate 206. When the battery modules 201 are stacked in the energy storage cabinet, arranging the positive electrode connection terminal 2029 and the negative electrode connection terminal 2030 on the same side of the heat dissipation end plate 206 facilitates connection between the positive electrode connection terminal 2029 of one battery module 201 and the negative electrode connection terminal 2030 of another adjacent battery module 201, thereby shortening the length of the conductive bar 10. The conductive bar 10 is connected between the positive electrode connection terminal 2029 and the negative electrode connection terminal 2030. Furthermore, the conductive bar 10 is plug-connected to both the positive electrode connection terminal 2029 and the negative electrode connection terminal 2030.

[0069] 4 and 13, the heat-dissipating end plate 206 can define a mounting groove 2063 in which both the positive and negative connection terminals 2029, 2030 are located. Furthermore, the mounting groove 2063 is recessed inward from the outer surface of the heat-dissipating end plate 206. By locating the positive and negative connection terminals 2029, 2030 within the mounting groove 2063, the terminals are concealed and prevented from protruding beyond the outer surface of the heat-dissipating end plate 206, thus avoiding interference with other components.

[0070] 4 and 13 , the heat-dissipating end plate 206 further defines a foolproof slot 203, which is connected to the mounting groove 2063 and used for wiring (e.g., the conductive bar 10). The foolproof slot 203 further includes a first slot segment 20641, a second slot segment 20642, and a third slot segment 20643. The first slot segment 20641 and the second slot segment 20642 extend in the height direction of the battery module 201. The second slot segment 20642 extends in the width direction of the battery module 201, with one end connected to the first slot segment 20641 and the other end connected to the third slot segment 20643. The third slot segment 20643 communicates with the mounting groove 2063, and the shape of the conductive bar 10 is the same as that of the foolproof slot 203. As shown in FIG. 13 , the positive electrode connection terminal 2029 can be located to the left of the negative electrode connection terminal 2030. When multiple battery modules 201 are stacked in order, the conductive bar 10 connects adjacent battery modules 201, with the lower end of the conductive bar 10 being plugged into the positive electrode connection terminal 2029 of the lower battery module 201 and the upper end of the conductive bar 10 being plugged into the negative electrode connection terminal 2030 of the upper battery module 201, thereby achieving electrical connection between the two adjacent battery modules 201. Furthermore, by positioning the conductive bar 10 within the foolproof slot 203, the foolproof slot 203 can guide the conductive bar 10 and prevent the conductive bar 10 from being installed incorrectly (for example, the upper end of the conductive bar 10 is inserted into and connected to the negative electrode connection terminal 2030 of the upper battery module 201, and the lower end of the conductive bar 10 is inserted into and connected to the negative electrode connection terminal 2030 of the lower battery module 201). At the same time, hiding the conductive bar 10 within the foolproof slot 203 can prevent the conductive bar 10 from interfering with other components, ensuring the reliability of the assembly of the conductive bar 10 with the positive electrode connection terminal 2029 and the negative electrode connection terminal 2030.

[0071] Furthermore, the heat-dissipating end plate 206 may also define a wiring slot 2064, which is connected to the mounting groove 2063. The foolproof slot 203 and the wiring slot 2064 are located on opposite sides of the mounting groove 2063. Furthermore, when the battery module 201 is placed in the orientation shown in FIG. 4 , the wiring slot 2064 is located above the mounting groove 2063, and the foolproof slot 203 is located below the mounting groove 2063. The wiring slot 2064 is located corresponding to the positive connection terminal 2029, and the foolproof slot 203 is located corresponding to the negative connection terminal 2030. When multiple battery modules 201 are stacked in order, the conductive bar 10 is connected between two adjacent battery modules 201. The lower end of the conductive bar 10 is plugged into the positive electrode connection terminal 2029 of the battery module 201 located below and is positioned within the wiring slot 2064 of the battery module 201, and the upper end of the conductive bar 10 is plugged into the negative electrode connection terminal 2030 of the battery module 201 located above and is positioned within the foolproof slot 203 of the battery module 201, thereby connecting the two battery modules 201 in series. The wiring slot 2064 is used to avoid the conductive bar 10. The conductive bar 10 is hidden within the wiring slot 2064 to avoid interference between the conductive bar 10 and other components. The foolproof slot 203 and the wiring slot 2064 can both limit the position of the conductive bar 10.

[0072] In some embodiments of the present disclosure, the battery module 201 may further include a temperature detection component, which is used to collect the temperature of the battery unit 220. It should be noted that the temperature detection component may be configured as a temperature sensor. The driving fan 2061 and the temperature detection component are both suitable for connection to a battery management system of the battery module 201. The battery management system is used to adjust the rotation speed of the driving fan 2061 by receiving the temperature information collected by the temperature detection component. In other words, the battery management system controls the operation mode of the driving fan 2061 through the temperature information detected by the temperature detection component.

[0073] In this configuration, both the driving fan 2061 and the temperature detection component can be connected to the battery management system of the battery module 201 via a communication harness. The temperature detection component can monitor the temperature of the battery unit 220 in real time and transmit the detected temperature information to the battery management system. The battery management system controls the rotation speed of the driving fan 2061 based on the received temperature information. For example, when the temperature of the battery unit 220 is relatively high (e.g., above 35°C), the battery management system instructs the driving fan 2061 to increase its rotation speed, preferably to operate at full speed, to efficiently cool the battery module 201. When the temperature of the battery unit 220 is relatively low (e.g., reaching 30°C), the battery management system adjusts the driving fan 2061 to operate at a low speed, such as half speed, which can also effectively cool the battery module 201. This setting allows for variable speed adjustment of the driving fan 2061 according to different temperatures of the battery module 201, ensuring that the fan is adjusted to an appropriate speed to meet the cooling requirements of the battery module 201, which helps to save electricity costs and has an important effect on improving heat dissipation efficiency and energy utilization. In addition, this arrangement maintains the temperature stability of the battery module 201 during operation, effectively supporting stable output of the battery module 201.

[0074] 22 , the battery module 201 may also include an information collector 2062 (BIC). The information collector 2062 may be connected between the temperature detection component and the battery management system. Temperature information detected by the temperature detection component is transmitted to the battery management system via the information collector 2062. Furthermore, the driving fan 2061 is electrically connected to the information collector 2062 via a wiring harness, and draws power from the outside via the information collector 2062, driving the driving fan 2061 to rotate.

[0075] In some embodiments of the present disclosure, as shown in FIGS. 1 , 2 , and 32 , the battery module 201 may also include a ventilation panel 207, which is arranged on the side of the driving fan 2061 away from the battery unit 220, and which is provided with air outlet holes 20722. As shown in FIG. 1 , the ventilation panel 207 and the heat-dissipating end plate 206 are both disposed on the front side of the battery unit 220. The heat-dissipating end plate 206 is located between the ventilation panel 207 and the battery unit 220. The ventilation panel 207 is installed on the heat-dissipating end plate 206, and the ventilation panel 207 can be attached to the heat-dissipating end plate 206 via magnetic attraction or bolts. The specific assembly method of the ventilation panel 207 and the heat-dissipating end plate 206 is selected according to specific circumstances. When the drive fan 2061 is operating, the blades of the drive fan 2061 rotate, and under the driving of the drive fan 2061, the air in the first air duct 210 flows along the first air duct 210 toward the drive fan 2061, the heat generated in the battery cells 208 is removed by the air flow, and the air carried out by the drive fan 2061 is finally discharged to the outside of the battery module 201 through the air discharge holes 20722 located on the ventilation panel 207, effectively dissipating the hot air. In addition, the ventilation panel 207 also serves to shield the drive fan 2061, preventing the drive fan 2061 from being exposed to the outside of the battery module 201.

[0076] 1 and 2 , the battery module 201 may further include an end plate 2081, which is disposed at one end of the battery unit 220 and spaced apart from the battery unit 220. The end plate 2081 is connected to the top cover 213 and / or the bottom cover 214 and has a first air inlet hole 2082 communicating with the first air duct 210. The end plate 2081 may be directly or indirectly connected to both the top cover 213 and the bottom cover 214 and may be directly assembled to the top cover 213 and the bottom cover 214 via bolts. As shown in FIG. 1 , a bus bar mounting bracket 2084 may be disposed between the end plate 2081 and the battery unit 220, and the bus bar mounting bracket 2084 may be directly or indirectly installed on the first side plate 211 and the second side plate 212. The busbar mounting bracket 2084 also has a connecting piece 2083, and the end plate 2081 can be installed on the top cover 213 and / or the bottom cover 214, thereby achieving an indirect connection between the end plate 2081 and the first side plate 211 and the second side plate 212. In addition, the end plate 2081 is provided with a first air inlet hole 2082 communicating with the first air duct 210, so that air can flow into the battery module 201 through the first air inlet hole 2082. A portion of the air flowing into the battery module 201 flows into the heat sink 209, and another portion of the air flows into the second air duct 216 to surround the battery cells 208 with air, thereby further improving the heat dissipation efficiency of the battery cells 208.

[0077] Furthermore, the battery module 201 is provided with an air supply hole 215, which connects the first space 40 and the second air duct 216. In the third direction, the air supply hole 215 is located at the center of the battery module 201, which can also be understood as the air supply hole 215 being disposed at the center position of the battery module 201. Specifically, both the top cover 213 and the bottom cover 214 are provided with air supply holes 215 that communicate with the second air duct 216. After the cool air flows into the first space 40, the cool air in the first space 40 can flow into the second air duct 216 through the air supply hole 215, surrounding the battery cells 208 and thereby further improving the heat dissipation efficiency of the battery cells 208.

[0078] In some embodiments of the present disclosure, as shown in FIG. 1 , the top cover 213 and / or the bottom cover 214 are provided with air supply holes 215 communicating with the second air duct 216, for example, both the top cover 213 and the bottom cover 214 are provided with air supply holes 215 communicating with the second air duct 216, and cool air can flow into the second air duct 216 through the air supply holes 215, surrounding the battery cells 208 with the cool air, thereby further improving the heat dissipation efficiency of the battery cells 208.

[0079] 11 , the shape of the battery cell 208 is flat and resembles a blade, and the battery cell 208 may be a new type of lithium iron phosphate battery. The length dimension of the battery cell 208 is E, where E satisfies the relationship 400 mm≦E≦1500 mm, the width dimension of the battery cell 208 is F, where F satisfies the relationship 70 mm≦F≦150 mm, and the thickness dimension of the battery cell 208 is G, where G satisfies the relationship 10 mm≦G≦25 mm. This arrangement allows the flat-shaped battery cells 208 to be arranged in the battery module 201, and by sequentially arranging multiple battery cells 208 along the thickness direction of the battery cells 208, the energy density in the battery module 201 can be increased.

[0080] In the energy storage cabinet according to the embodiment of the present disclosure including the battery module 201 of the above embodiment, the battery module 201 has a simple structure that improves the assembly efficiency of the battery module 201, thereby improving the assembly efficiency of the energy storage cabinet, and further, there is no need to install brackets to fix the battery cells 208 in the battery module 201, so more battery cells 208 can be arranged in the battery module 201, which further improves the energy density of both the battery module 201 and the energy storage cabinet. When the battery module 201 has energy density, the battery module 201 of the present disclosure has a smaller volume.

[0081] 23 to 31 , an energy storage cabinet 200 can include an electrical connection assembly 100, which is used to electrically connect two battery modules 201, and the electrical connection assembly 100 is plugged into the battery modules 201, and the two battery modules 201 are connected via the electrical connection assembly 100, which is suitable for connecting the two battery modules 201 to establish an electrical connection therebetween, thus connecting the two battery modules 201 in series or in parallel. For illustrative purposes, the present disclosure provides an example in which the electrical connection assembly 100 is connected in series between two battery modules 201. The battery module 201 has a connection terminal 202, and two connection terminals 202 can be provided in each battery module 201, one of the two connection terminals 202 being configured as a positive electrode connection terminal 2029 of the battery module 201, and the other of the two connection terminals 202 being configured as a negative electrode connection terminal 2030 of the battery module 201.

[0082] 23 to 31 , an electrical connection assembly 100 includes a conductive bar 10 and an insulating cover 20, where the conductive bar 10 can be installed as a copper bar and is suitable for plug-in connection with two adjacent battery modules 201 to enable electrical connection between the two battery modules 201, the insulating cover 20 can be covered on the conductive bar 10 and is suitable for connection with the battery modules 201, and the conductive bar 10 is suitable for plug-in connection with a connection terminal 202 to enable electrical connection between the conductive bar 10 and the connection terminal 202. The insulating cover 20 can be covered on the conductive bar 10 to prevent the conductive bar 10 from jumping out of the connection terminal 202, and the insulating cover 20 is connected to the connection terminal 202 and is suitable for pressing the conductive bar 10.

[0083] When two battery modules 201 need to be connected in series, the conductive bar 10 is inserted into and connected to the positive electrode connection terminal 2029 of one of the two battery modules 201, and the conductive bar 10 is also inserted into and connected to the negative electrode connection terminal 2030 of the other of the two battery modules 201. In this way, the two battery modules 201 are connected in series, and in the process of inserting the conductive bar 10 into the connection terminal 202, there is no need to use a tool such as a wrench to insert the conductive bar 10 into the connection terminal 202, making it easier for the conductive bar 10 to dock with the connection terminal 202. This improves the assembly efficiency of the conductive bar 10 and the connection terminal 202 and also reduces installation costs. At the same time, the insulating cover 20 is connected to the connection terminal 202 and presses the conductive bar 10, and by pressing the conductive bar 10 through the insulating cover 20, the conductive bar 10 can be securely inserted into the connection terminal 202, preventing virtual connection and arc discharge, and improving the operational safety of the electrical connection assembly 100 and also improving the operational safety of the battery module 201. In addition, the insulating cover 20 is an insulating component and can be covered on the conductive bar 10, which can prevent the conductive bar 10 from being exposed, avoid electric leakage, and improve high-voltage safety.

[0084] In some embodiments of the present disclosure, as shown in Figures 26 to 29 and 31, the conductive bar 10 may include a first sub-conductive bar 11, a second sub-conductive bar 12, and a third sub-conductive bar 13, where the first sub-conductive bar 11 and the third sub-conductive bar 13 are used for insertion and mating with corresponding connection terminals 202, and the second sub-conductive bar 12 is connected between and separates the first sub-conductive bar 11 and the third sub-conductive bar 13, thereby forming avoidance spaces 14 between the first sub-conductive bar 11 and the second sub-conductive bar 12 and between the third sub-conductive bar 13 and the second sub-conductive bar 12, and each avoidance space 14 is configured to accommodate a connection terminal 202.

[0085] As shown in Figures 30 and 31, a foolproof slot 203 can be installed in the battery module 201, and the shape of the foolproof slot 203 is consistent with the shape of the conductive bar 10. When two battery modules 201 need to be connected in series, the first sub-conductive bar 11 is plugged into and connected to the positive electrode connection terminal 2029 of one of the two battery modules 201, and the negative electrode connection terminal 2030 of the battery module 201 connected to the first sub-conductive bar 11 is located in the avoidance space 14 between the first sub-conductive bar 11 and the second sub-conductive bar 12, and the third sub-conductive bar 13 is , which is plugged into the negative electrode connection terminal 2030 of the other battery module 201, and the positive electrode connection terminal 2029 of the battery module 201 connected to the third sub-conductive bar 13 is located in the avoidance space 14 between the third sub-conductive bar 13 and the second sub-conductive bar 12, and the conductive bar 10 is located in the foolproof slot 203, which restricts the conductive bar 10 in the length, width, and thickness directions of the conductive bar 10. This arrangement allows the conductive bar 10 to be hidden within the foolproof slot 203, prevents the conductive bar 10 from being scratched, and facilitates positioning of the conductive bar 10. Furthermore, the foolproof slot 203 is designed as a curved structure and is assembled in conjunction with the conductive bar 10, thereby preventing the conductive bar 10 from being installed incorrectly and achieving a foolproof function.

[0086] In some embodiments of the present disclosure, one end of the second sub-conductive bar 12 is connected to the first sub-conductive bar 11, and the other end of the second sub-conductive bar 12 is connected to the third sub-conductive bar 13, and the first sub-conductive bar 11 and the third sub-conductive bar 13 extend away from each other. As shown in Figures 26 to 29 and 31, one end of the second sub-conductive bar 12 is connected to one end of the first sub-conductive bar 11, and the other end of the second sub-conductive bar 12 is connected to one end of the third sub-conductive bar 13. Furthermore, the second sub-conductive bar 12 is arranged perpendicular to the first sub-conductive bar 11 and the third sub-conductive bar 13. This arrangement achieves the technical effect of forming avoidance spaces 14 between the first sub-conductive bar 11 and the second sub-conductive bar 12 and between the third sub-conductive bar 13 and the second sub-conductive bar 12, thereby enabling a rational layout of the first sub-conductive bar 11, the second sub-conductive bar 12, and the third sub-conductive bar 13. The conductive bar 10 can also be configured as a "Z" shaped structure, in which the conductive bar 10 is set as a "Z" shape and the positive connection terminal 2029 and the negative connection terminal 2030 are pulled out from the same side of the battery module 201, thereby facilitating installation and removal of the electrical connection assembly 100 and facilitating maintenance of the electrical connection assembly 100.

[0087] 26 to 28 , the conductive bar 10 is provided with a positioning groove 15 suitable for positioning and fitting with the connecting terminal 202, and the positioning groove 15 penetrates the conductive bar 10 in the thickness direction of the conductive bar 10. The first sub-conductive bar 11 and the third sub-conductive bar 13 are provided with a positioning groove 15, and the connecting terminal 202 may be provided with a limiting protrusion 2026. After the conductive bar 10 is inserted into the connecting terminal 202, the limiting protrusion 2026 extends into the positioning groove 15 of the conductive bar 10. By cooperating with the limiting protrusion 2026, the conductive bar 10 can be securely inserted into the connecting terminal 202, and separation of the connecting terminal 202 and the conductive bar 10 can be prevented, thereby further avoiding a virtual connection therebetween and preventing the conductive bar 10 from swinging relative to the connecting terminal 202.

[0088] Furthermore, both the first sub-conductive bar 11 and the third sub-conductive bar 13 can be equipped with a plurality of positioning grooves 15, and the connection terminal 202 can be provided with a plurality of limiting protrusions 2026, and through the cooperation of the plurality of positioning grooves 15 and the plurality of limiting protrusions 2026, the conductive bar 10 can be more securely inserted into the connection terminal 202, and further prevent separation of the connection terminal 202 and the conductive bar 10, thereby further avoiding virtual connection between them and further preventing the conductive bar 10 from swinging relative to the connection terminal 202.

[0089] In some embodiments of the present disclosure, as shown in Figures 23, 28, and 29, the insulating cover 20 may include an insulating cover main body 21 and a first clamping portion 22, wherein the insulating cover main body 21 can be covered on the conductive bar 10 and is adapted to press the conductive bar 10, and in a first direction of the insulating cover 20, when the electrical connection assembly 100 is placed in the direction shown in Figure 23, the first direction of the insulating cover 20 refers to the left-right direction in the figure, and the first clamping portion 22 is provided on at least one side of the insulating cover main body 21, and preferably, in the first direction of the insulating cover 20, first clamping portions 22 suitable for clamping with the connection terminals 202 are provided on both sides of the insulating cover main body 21. By providing the first clamping portion 22 on the insulating cover body 21, the insulating cover 20 can be firmly installed on the connecting terminal 202 and the insulating cover body 21 can be reliably pressed against the conductive bar 10, thereby further preventing virtual connection between the conductive bar 10 and the connecting terminal 202. The conductive bar 10 is also covered by the insulating cover body 21, which serves as insulation protection, prevents electric leakage in the electrical connection assembly 100, and improves the operational safety of the electrical connection assembly 100. At the same time, by snapping the insulating cover 20 and the connecting terminal 202 together, the insulating cover 20 and the connecting terminal 202 can be easily disassembled and assembled, thereby improving the assembly efficiency of the insulating cover 20 and the connecting terminal 202.

[0090] In some embodiments of the present disclosure, when the electrical connection assembly 100 is placed in the orientation shown in FIG. 23 in the second orientation of the insulating cover 20, the second orientation of the insulating cover 20 refers to the front-to-rear direction shown in FIG. 23 , and a shielding portion 23 is provided at the end of the insulating cover body 21 away from the conductive bar 10, and the shielding portion 23 is used to shield the conductive bar 10. As shown in FIGS. 23 , 27 , and 29 , the connection terminal 202 defines a plug slot 2023, and when the electrical connection assembly 100 is placed in the orientation shown in FIG. 27 , the top end of the plug slot 2023 is open, and in the second orientation of the insulating cover 20, both the front and rear ends of the plug slot 2023 are open. The conductive bar 10 can be pushed into the plug slot 2023 of the connection terminal 202 from the open end of the plug slot 2023 to achieve plug-in engagement between the conductive bar 10 and the connection terminal 202. After the conductive bar 10 is inserted into the insertion slot 2023, the insulating cover 20 is placed on the connection terminal 202, and the shielding portion 23 can shield the open end of the insertion slot 2023 in the second direction of the insulating cover 20, thereby shielding the conductive bar 10 and preventing leakage of electricity from the electrical connection assembly 100. In addition, the insulating cover 20 can cover the upper end of the insertion slot 2023, restricting the movement of the conductive bar 10 and preventing the conductive bar 10 from jumping out of the insertion slot 2023.

[0091] 23, 26 to 28, in some embodiments of the present disclosure, the conductive bar 10 is fitted with an insulating sheath 30 on the outside, which serves as an insulating function, and the insulating sheath 30 may be made of insulating adhesive, and at least a portion of the structure of the first sub-conductive bar 11 and the third sub-conductive bar 13 in the longitudinal direction of the conductive bar 10 is exposed outside the insulating sheath 30. By providing the insulating sheath 30 on the outside of the conductive bar 10, electric leakage of the conductive bar 10 can be avoided and electric shock after a user touches the conductive bar 10 can be prevented, thereby further improving the operational safety of the electrical connection assembly 100.

[0092] A battery module 201 is provided with a connection terminal 202, and there are multiple battery modules 201 in the energy storage cabinet, the multiple battery modules 201 are stacked in order in the height direction of the energy storage cabinet, and each battery module 201 is provided with two connection terminals 202, which are arranged in the width direction of the battery module 201 and located at the same end, one of the two connection terminals 202 being constructed as a positive connection terminal 2029 of the battery module 201 and the other being constructed as a negative connection terminal 2030 of the battery module 201. The electrical connection assembly 100 is used to electrically connect the two battery modules 201.

[0093] When two battery modules 201 need to be connected in series, the conductive bar 10 is inserted into and connected to the positive electrode connection terminal 2029 of one of the two battery modules 201, and is also inserted into and connected to the negative electrode connection terminal 2030 of the other of the two battery modules 201 to achieve the series connection. The process of inserting the conductive bar 10 into the connection terminal 202 does not require the use of a tool such as a wrench, which facilitates the connection between the conductive bar 10 and the connection terminal 202 and improves the assembly efficiency of the conductive bar 10 and the connection terminal 202, thereby improving the assembly efficiency of the energy storage cabinet and reducing the installation costs of the conductive bar 10 and the connection terminal 202. At the same time, the insulating cover 20 is connected to and presses against the connection terminal 202. By pressing the conductive bar 10 against the insulating cover 20, the conductive bar 10 can be securely connected to the connection terminal 202, avoiding virtual connection between the conductive bar 10 and the connection terminal 202, preventing arc discharge, and improving the operational safety of the electrical connection assembly 100, as well as the operational safety of the battery module 201, thereby improving the operational safety of the energy storage cabinet. In addition, the insulating cover 20 is an insulating component and can be covered on the conductive bar 10, which can prevent the conductive bar 10 from being exposed, avoid electric leakage, and improve high-voltage safety.

[0094] 31 , a battery module 201 is provided with two connection terminals 202, one of which is connected to the conductive bar 10 and the other of which is spaced apart from the conductive bar 10. Each battery module 201 is provided with two connection terminals 202, one of which is connected to the conductive bar 10 and the other is located within the avoidance space 14 formed by the conductive bar 10 so as to keep the connection terminal 202 spaced apart from the conductive bar 10 and avoid interference therebetween. Both connection terminals 202 are mounted on the same end of the battery module 201 and are disposed adjacent to the same side of the battery module 201; in one embodiment, it may also be understood that a battery module 201 is provided with a positive connection terminal 2029 and a negative connection terminal 2030, both of which are disposed adjacent to the same side of the battery module 201.

[0095] As shown in FIG. 31, when the electrical connection assembly 100 and the connection terminal 202 are placed in the orientation shown in FIG. 31, the positive connection terminal 2029 and the negative connection terminal 2030 are positioned adjacent to each other on the same side of the battery module 201, for example, the positive connection terminal 2029 and the negative connection terminal 2030 are positioned adjacent to each other on the left side of the battery module 201.

[0096] 26 and 27 , the connection terminal 202 may include a conductive elastic piece 2021 and an insulating terminal body 2022, the terminal body 2022 defining an insertion slot 2023, the conductive elastic piece 2021 being disposed in the insertion slot 2023, and after the conductive bar 10 is inserted into the insertion slot 2023, the conductive bar 10 comes into contact with the conductive elastic piece 2021. Furthermore, when the electrical connection assembly 100 is placed in the orientation shown in FIG. 27 , the upper end of the insertion slot 2023 is open, and in the second orientation of the insulating cover 20, both the front and rear ends of the insertion slot 2023 are open, and the conductive bar 10 is pushed into the insertion slot 2023 of the connection terminal 202 from the open end of the insertion slot 2023 to bring the conductive elastic piece 2021 into contact with the conductive bar 10, thereby achieving an electrical connection between the conductive bar 10 and the conductive elastic piece 2021.

[0097] Further, as shown in Figures 26 and 27, the conductive elastic piece 2021 may include a first conductive elastic piece 2024 and a second conductive elastic piece 2025, the first conductive elastic piece 2024 and the second conductive elastic piece 2025 being arranged opposite to each other in a first direction of the connection terminal 202, the first direction of the connection terminal 202 being consistent with the first direction of the insulating cover 20, and the conductive bar 10 being suitable for being inserted between the first conductive elastic piece 2024 and the second conductive elastic piece 2025. Furthermore, there are a plurality of first conductive elastic pieces 2024 and a plurality of second conductive elastic pieces 2025, which are arranged in sequence along the second direction of the connecting terminal 202, the plurality of first conductive elastic pieces 2024 correspond one-to-one to the plurality of second conductive elastic pieces 2025, and the second direction of the connecting terminal 202 coincides with the second direction of the insulating cover 20. After the conductive bar 10 is pushed into the insertion slot 2023 of the connecting terminal 202 from the open end of the insertion slot 2023, the conductive bar 10 is sandwiched between the first conductive elastic piece 2024 and the second conductive elastic piece 2025, which ensures reliable contact between the conductive bar 10 and both the first conductive elastic piece 2024 and the second conductive elastic piece 2025, thereby further avoiding virtual connection between the conductive bar 10 and the connecting terminal 202.

[0098] 26 and 27, the conductive bar 10 is provided with a positioning groove 15, and at least one of the first conductive elastic piece 2024 and the second conductive elastic piece 2025 has a limiting protrusion 2026, which is adapted to extend into the positioning groove 15 of the conductive bar 10, and the positioning groove 15 may penetrate the conductive bar 10 in its thickness direction. The first sub-conductive bar 11 and the third sub-conductive bar 13 are provided with the positioning groove 15, and the first conductive elastic piece 2024 and the second conductive elastic piece 2025 have a limiting protrusion 2026, which is adapted to extend into the positioning groove 15 of the conductive bar 10. Both the conductive elastic piece 2021 and the conductive bar 10 may have a limiting protrusion 2026, which extends into the positioning groove 15 of the conductive bar 10 after the conductive bar 10 is inserted into the connecting terminal 202. The cooperation of the limiting protrusion 2026 and the positioning groove 15 allows the conductive bar 10 to be securely inserted into the connecting terminal 202, preventing separation between the conductive elastic piece 2021 and the conductive bar 10, thus further avoiding a virtual connection between them, and preventing the conductive bar 10 from swinging relative to the connecting terminal 202. Furthermore, by having the limiting protrusion 2026 extend into the positioning groove 15 of the conductive bar 10, it can be determined whether the conductive bar 10 is inserted in a predetermined position.

[0099] 23 and 26 , the connection terminal 202 may further include a conductive component 2027, which may be configured as a metal piece, connected to the conductive elastic piece 2021, and adapted to be electrically connected to the battery module 201. Furthermore, one end of the conductive component 2027 extends into the insertion slot 2023 and is connected to the conductive elastic piece 2021. When the connection terminal 202 is installed in the battery module 201, the conductive component 2027 is connected between the conductive elastic piece 2021 and the battery module 201, thereby achieving an electrical connection between the connection terminal 202 and the battery module 201.

[0100] 23 and 26 , the insulating cover 20 is provided with a first clamping portion 22, and the connecting terminal 202 is provided with a second clamping portion 2028, which is adapted to be latched onto the first clamping portion 22 of the insulating cover 20. In a first direction of the connecting terminal 202, the second clamping portions 2028 are provided on both sides of the connecting terminal 202, and the second clamping portions 2028 are connected to the first clamping portions 22, respectively. Latching the second clamping portions 2028 with the first clamping portions 22 simplifies the installation and removal of the insulating cover 20 on the connecting terminal 202, thereby improving the efficiency of installation and removal of the insulating cover 20 and the connecting terminal 202. However, the present disclosure is not limited thereto, and the insulating cover 20 and the connecting terminal 202 can also be assembled by bolts, and the specific assembly method of the insulating cover 20 and the connecting terminal 202 can be selected according to the actual situation.

[0101] 23 and 26, the first clamping portion 22 is one of a clamping hole and a clamping hook, and the second clamping portion 2028 is the other of a clamping hole and a clamping hook. For example, the first clamping portion 22 is a clamping hole, and the second clamping portion 2028 is a clamping hook. In the process of assembling the insulating cover 20 and the connection terminal 202, the insulating cover 20 is pressed to fit the clamping hook into the clamping hole, thereby completing the assembly of the insulating cover 20 and the connection terminal 202. This arrangement simplifies the structure of the first clamping portion 22 and the second clamping portion 2028, reduces the difficulty of manufacturing the insulating cover 20 and the connection terminal 202, and improves the manufacturing efficiency of the insulating cover 20 and the connection terminal 202.

[0102] In some embodiments of the present disclosure, in the second direction of the connection terminal 202, both ends of the insertion slot 2023 are open, and the insulating cover body 21 is provided with a shielding portion 23, which is used to shield the open end of the insertion slot 2023 away from the conductive bar 10. 27 , when the connection terminal 202 is placed in the direction shown in FIG. 27 , the upper end of the insertion slot 2023 is open; when the connection terminal 202 is in the second direction, both ends of the insertion slot 2023 are open, and the conductive bar 10 is pushed into the insertion slot 2023 of the connection terminal 202 from the open end of the insertion slot 2023, causing the conductive elastic piece 2021 to contact the conductive bar 10; after the conductive bar 10 is inserted into the insertion slot 2023, the insulating cover 20 is installed on the connection terminal 202, and the shielding portion 23 can shield the open end of the insertion slot 2023, thereby shielding the conductive bar 10 and thereby preventing leakage of electricity from the electrical connection assembly 100.

[0103] Furthermore, as shown in FIG. 23, the connection terminals 202 are equipped with mounting posts 2031, and bolts are passed through these mounting posts to connect with the battery module 201, thereby firmly fixing the connection terminals 202 to the battery module 201.

[0104] It should be noted that first, a plurality of battery modules 201 are installed in the energy storage cabinet, and the plurality of battery modules 201 are stacked in layers in the height direction of the energy storage cabinet, and then the conductive bar 10 is installed in the foolproof slot 203. Next, the conductive bar 10 is installed in the foolproof slot 203, ensuring that the lower end of the conductive bar 10 is aligned with the connection terminal 202 of the lower battery module 201 while the upper end of the conductive bar 10 is aligned with the connection terminal 202 of the upper battery module 201, and the conductive bar 10 is firmly pressed until it cannot be pushed into the insertion slot 2023, so that the conductive bar 10 is placed between the first conductive elastic piece 2024 and the second conductive elastic piece 2025.

[0105] In some embodiments of the present disclosure, the module assembly includes a battery module and a ventilation panel 207, and the battery module includes a battery unit 220 and a heat dissipating end plate 206.

[0106] The battery unit 220 is used to store and release electrical energy. The battery unit 220 generates heat during charging and discharging. The heat-dissipating end plate 206 is installed on one side of the battery unit 220. In other words, the heat-dissipating end plate 206 functions as an end plate located on one outer surface of the battery unit 220. The heat-dissipating end plate 206 provides support and protection for the battery unit 220. At the same time, the heat-dissipating end plate 206 is equipped with a driving fan 2061, which can increase the airflow speed passing through the battery unit 220, thereby improving the heat dissipation effect of the battery unit 220 and maintaining the operation of the energy storage unit 220 at an appropriate temperature. Preferably, the heat-dissipating end plate 206 is installed on one side of the battery unit 220 in the longitudinal direction, increasing the heat exchange area and heat exchange time between the airflow and the battery unit 220, thereby improving the heat dissipation effect of the battery unit 220.

[0107] The ventilation panel 207 is attached to the outside of the heat-dissipating end plate 206. That is, the ventilation panel 207 is attached to the side of the heat-dissipating end plate 206 away from the battery unit 220. The ventilation panel 207 can cover the heat-dissipating end plate 206. The ventilation panel 207 includes a panel frame 2071 and a ventilation grill 2072 fixed to the panel frame 2071. The panel frame 2071 is suitable for being fixed to the heat-dissipating end plate 206. The ventilation grill 2072 is used for ventilation and protection of the heat-dissipating end plate 206. The ventilation grill 2072 is hollowed out to facilitate airflow through the ventilation grill 2072, ensuring the heat dissipation effect of the battery module 201. At the same time, the ventilation grille 2072 can also prevent foreign objects from entering the driving fan 2061 and the battery unit 220, ensuring the safety and reliability of the battery module 201. The foreign objects may be debris, insects, fingers, etc. In addition, the ventilation grille 2072 can visually shield the heat-dissipating end plate 206, reducing the exposure of the driving fan 2061 and other electrical components on the heat-dissipating end plate 206 and improving the neatness and aesthetics of the module assembly. Furthermore, the ventilation grille 2072 can also be equipped with a company logo to enhance product recognition of the module assembly.

[0108] It should be noted that the drive fan 2061 is a wear part compared with the service life of the battery unit 220. When the drive fan 2061 requires maintenance or replacement due to a malfunction, the ventilation panel 207 is removed to expose the drive fan 2061 located on the heat-dissipating end plate 206. The drive fan 2061 on the heat-dissipating end plate 206 is disassembled and assembled on the side of the heat-dissipating end plate 206 facing away from the battery unit 220. In other words, the drive fan 2061 is disassembled and assembled on the side of the heat-dissipating end plate 206 facing the ventilation panel 207. This allows for maintenance or replacement of the drive fan 2061 without having to remove the heat-dissipating end plate 206, thereby improving the convenience of maintaining the module assembly. As shown in FIG. 12 , the drive fan 2061 is installed on the side of the heat-dissipating end plate 206 facing away from the battery unit 220 via a plurality of second fasteners 20611, which may be bolts.

[0109] According to the module assembly of the embodiment of the present disclosure, a heat-dissipating end plate 206 is provided on one side of the battery unit 220. A driving fan 2061 is provided on the heat-dissipating end plate 206. A ventilation panel 207 is provided on the outside of the heat-dissipating end plate 206. The ventilation panel 207 ensures the heat dissipation effect of the module assembly and prevents foreign objects from entering. Furthermore, the ventilation panel 207 can improve the maintenance convenience of the module assembly, thereby enhancing its market competitiveness.

[0110] In some embodiments of the present disclosure, the perforation rate α of the ventilation grille 2072 satisfies the following equation: α≧(μV / v) / S1, where μ is an empirical coefficient, μ satisfies the relationship 0.9≦μ≦1.1, V is the exhaust volume per unit time when the driving fan 2061 is running at full power, v is the maximum wind speed of the driving fan 2061, and S1 is the effective air outlet area of ​​the driving fan 2061, thereby ensuring the ventilation effect of the heat dissipation end plate 206 and ensuring that the heat dissipation end 206 meets the heat dissipation requirements of the battery module 201.

[0111] In a specific embodiment of the present disclosure, μ may be 1.0, and when the drive fan 2061 is running at full power, the exhaust volume is 149.50 CFM, where 1 CFM=0.000472 m 3 / s, i.e., V is 0.070564 m 3 / s, the maximum wind speed v of the driving fan 2061 is 17 m / s, and the effective air outlet area of ​​the driving fan 2061 is L1 × L2 (as shown in FIG. 7), where L1 = L2 = 92 mm, i.e., S1 is 0.008464 m 2 Therefore, (μV / v) / S1=49%, that is, when the perforation rate α of the ventilation grille 2072 is 49% or more, it can meet the heat dissipation requirements of the battery module 201. At the same time, in order to ensure the shielding and protection effect of the ventilation grille 2072 on the heat dissipation end plate 206 and its aesthetic appearance, the perforation rate α of the ventilation grille 2072 is preferably 50%.

[0112] Furthermore, the perforation rate α of the ventilation grille 2072 also satisfies the following formula: α≦70%. It can be understood that if α is greater than 70%, the strength of the ventilation grille 2072 is relatively weak, making the ventilation grille 2072 more susceptible to damage and poor in preventing foreign matter from entering the driving fan 2061 and the battery unit 220.

[0113] In some embodiments of the present disclosure, as shown in FIGS. 38 and 39 , the ventilation grill 2072 includes a plurality of air induction grills 20721 arranged at intervals. Both ends of each air induction grill 20721 are fixed to the panel frame 2071, and air outlet holes 20722 are formed between adjacent air induction grills 20721. The air outlet holes 20722 have equal widths, i.e., the widths of the air outlet holes 20722 in the air outlet direction are equal, and the width of the air outlet holes 20722 is D1. The air induction grills 20721 have equal widths, i.e., the widths of the air induction grills 20721 in the air outlet direction are equal, and the width D2 of the air induction grills 20721 satisfies the following formula: 0.6≦D1 / D2≦1.4. The air outlet holes and air induction grills with equal widths facilitate the production and manufacturing of the ventilation grill 2072. At the same time, when the air outlet holes 20722 and the air guide grille 20721 have the same width, D1 / D2 is approximately equal to the perforation rate α of the ventilation grille 2072. When D1 / D2 is less than 0.6, the width of the air outlet holes 20722 is too small, and the ventilation grille 2072 will result in insufficient heat dissipation from the battery module 201. On the other hand, when D1 / D2 is greater than 1.4, the width of the air outlet holes 20722 is too large, and it will be difficult for the ventilation grille 2072 to prevent foreign matter from entering the driving fan 2061 and the battery unit 220.

[0114] In certain embodiments of the present disclosure, the ventilation panel 207 is manufactured using an integrated injection molding process, where D1 / D2=1, where D1 is 2 mm and D2 is 2 mm, which facilitates demolding of the ventilation panel 207 and improves the yield of the ventilation panel 207.

[0115] In another embodiment of the present disclosure, as shown in FIGS. 42 and 43 , the ventilation grille 2072 includes a plurality of air guide grilles 20721 arranged at intervals. Both ends of each air guide grille 20721 are fixed to the panel frame 2071, and air outlet holes 20722 are formed between adjacent air guide grilles 20721. The width of the air outlet holes 20722 gradually narrows in the air outlet direction, and the minimum width of the air outlet holes 20722 is D3. The width of the air guide grille 20721 gradually widens in the air outlet direction, and the maximum width D4 of the air guide grille 20721 satisfies the following formula: 0.6≦D3 / D4≦1.4. This ensures the ventilation effect of the ventilation grille 2072 and prevents small foreign objects from entering the battery module 201 through the air outlet holes 20722.

[0116] It can be understood that the width of the air outlet holes 20722 is variable, and the width of the air guide grille 20721 is also variable. When the driving fan 2061 blows air toward the ventilation grille 2072, the innermost width of the air outlet holes 20722 is wider than its outermost width, while the innermost width of the air guide grille 20721 is narrower than its outermost width, and D3 / D4 is approximately equal to the perforation rate α of the ventilation grille 2072. If D3 / D4<0.6, the minimum width of the air outlet holes 20722 is too small, which results in insufficient heat dissipation from the battery module 201 by the ventilation grille 20722. If D3 / D4>1.4, the minimum width of the air outlet holes 20722 is too large, which results in difficulty for the ventilation grille 2072 to prevent foreign matter from entering the driving fan 2061 and the battery unit 220.

[0117] When the driving fan 2061 blows air toward the battery unit 220, if the innermost width of the air outlet hole 20722 is smaller than its outermost width and the innermost width of the air guide grille 20721 is larger than its outermost width, when D3 / D4<0.6, the maximum width of the air outlet hole 20722 is too small, resulting in insufficient heat dissipation from the battery module 201; and when D3 / D4>1.4, the maximum width of the air outlet hole 20722 is too large, making it difficult for the ventilation grille 2072 to prevent foreign objects from entering the driving fan 2061 and the battery unit 220.

[0118] 43 , the innermost width of the air outlet holes 20722 is greater than its outermost width, and the innermost width of the air induction grill 20721 is smaller than its outermost width. It can be understood that the innermost width of the air outlet holes 20722 refers to the width of the air outlet holes 20722 on the side closer to the panel frame 2071, the outermost width of the air outlet holes 20722 refers to the width of the air outlet holes 20722 on the side farther from the panel frame 2071, the innermost width of the air induction grill 20721 refers to the width of the air induction grill 20721 on the side closer to the panel frame 2071, and the outermost width of the air induction grill 20721 refers to the width of the air induction grill 20721 on the side farther from the panel frame 2071. That is, the width of the air outlet holes 20722 on the side closer to the driving fan 2061 is greater than the width on the side farther from the driving fan 2061, and the width of the air induction grille 20721 on the side closer to the driving fan 2061 is smaller than the width on the side farther from the driving fan 2061. The air outlet holes 20722 may form an inverted bell-mouth structure in the direction of airflow to reduce the air resistance of the air outlet holes 20722 and the air induction grille 20721 to the air output of the driving fan 2061, thereby helping to improve the heat dissipation effect of the module assembly.

[0119] 43 , in order to reduce the air resistance of the air outlet holes 20722 and the air induction grille 20721 relative to the air output of the driving fan 2061, the angle β between the air induction sidewall of the air induction grille 20721 and the air flow direction satisfies the following formula: 5°≦β≦15°, for example, β can be 5°, 10°, or 15°. When β is less than 5°, the reduction in air resistance is not significant, and when β is greater than 15°, the strength of the air induction grille 20721 may be affected, and the air induction grille 20721 may be easily deformed and vibrated under the force of the air flow.

[0120] In some embodiments of the present disclosure, the material used for the ventilation panel 207 is PPO (polyphenylene oxide), which has good toughness, heat resistance, flame retardancy, abrasion resistance, oxidation resistance, and weather resistance, among other advantages. The life cycle of PPO is at least equivalent to the life cycle of the battery unit 220 (10 to 15 years), and it can remain unchanged even when exposed to hot air for a long time.

[0121] In some embodiments of the present disclosure, multiple air induction grilles 20721 are arranged at equal intervals along the fourth direction, so that the air induction grilles 20721 and the air outlet holes 20722 are evenly distributed on the ventilation grille 2072. The protrusion length D5 of the air induction grille 20721 in the fourth direction and the protrusion length D6 of the panel frame 2071 in the fourth direction satisfy the following formula: 0.002≦D5 / D6≦0.006. This ensures that the ventilation grille 20722 has a sufficient number of air induction grilles 20721, so that both the air induction grilles 20721 and the air outlet holes 20722 are arranged relatively closely, which improves the uniformity of the air permeability of the ventilation grille 2072 and prevents small foreign objects from entering the interior of the module assembly through the air outlet holes 20722.

[0122] The fourth direction may coincide with the first and second directions. For example, as shown in FIG. 7, the fourth direction may be the length direction of the panel frame 2071, and the protruding length D6 of the panel frame 2071 in the fourth direction corresponds to the length of the panel frame 2071. The length of the panel frame 2071 may be equal to or similar to the length of the heat dissipation end plate 206. The protruding length D5 of the air guide grille 20721 in the fourth direction represents the maximum width of the air guide grille 20721. If D6 is 531.4 mm, the protruding length D5 of each air guide grille 20721 in the fourth direction may be 2 mm to ensure uniform air permeability through the ventilation grille 2072 and prevent the passage of foreign objects.

[0123] In some embodiments of the present disclosure, as shown in FIGS. 9 and 43 , the height H of the air induction grille 20721 extending outward from the panel frame 2071 satisfies the following ratio relationship: 1≦H / D5≦4. This ensures sufficient strength of the air induction grille 20721 and, at the same time, when the air flows through the air outlet holes 20722 between the two air induction grilles 20721, the air induction grille 20721 exerts a certain guiding effect on the air flow, preventing the air flow from branching and generating turbulence, thereby helping to improve the heat dissipation effect of the driving fan 2061. The height H of the air induction grille 20721 extending outward from the panel frame 2071 can be understood to be the protruding length of the air induction grille 20721 along a straight line in the air flow direction. For example, if D5 is 2 mm, any size of H may be 4 mm.

[0124] In some embodiments of the present disclosure, the air induction grille 20721 is a straight air induction grille, and the angle δ between the length direction of the straight air induction grille and the length direction of the panel frame 2071 satisfies the following range: 0°≦δ≦180°. The straight air induction grille is convenient to manufacture and enables the ventilation panel 207 to form a harmonious and aesthetically pleasing overall visual effect. In some specific embodiments, when δ=90°, the ventilation panel 207 is as shown in FIG. 7 . When δ=0°, the ventilation panel 207 is as shown in FIG. 44 . When δ=45°, the ventilation panel 207 is as shown in FIG. 45 . When δ=135°, the ventilation panel 207 is as shown in FIG. 46 .

[0125] In other embodiments of the present disclosure, the air induction grille 20721 may be a curved air induction grille that extends along a bent or curved path.

[0126] In some embodiments of the present disclosure, the battery unit 220 includes a plurality of battery cells arranged sequentially at intervals along the thickness direction of the battery cells to form heat dissipation air passages extending along the length direction of the battery cells. These air passages have a large heat exchange area with the battery cells, and a heat dissipation end plate 206 is positioned at one end of the battery cells along the length direction to enhance the heat dissipation effect of the battery unit 220.

[0127] 4 and 12, the heat dissipation end plate 206 is provided with a plurality of driving fans 2061, which are equally spaced along the length of the heat dissipation end plate 206. This ensures uniform heat dissipation of the battery unit 220, avoids localized overheating of the battery unit 220, and prevents the risk of thermal runaway of the battery unit 220.

[0128] 12 , 47 , and 48 , a first mounting portion 2069 is provided on the heat-dissipating end plate 206, and a second mounting portion 2079 corresponding to the first mounting portion 2069 is provided on the ventilation panel 207. One of the first mounting portion 2069 and the second mounting portion 2079 is equipped with a magnetic component 20691, and the other is provided with a magnetic connecting piece 20791. The ventilation panel 207 and the heat-dissipating end plate 206 are connected by the magnetic attraction between the magnetic component 20691 and the magnetic connecting piece 20791, and the ventilation panel 207 can be easily installed on or removed from the heat-dissipating end plate 206 without using an installation tool, thereby improving the efficiency of installation and removal of the ventilation panel 207. At the same time, when the magnetic component 20691 and the magnetic connecting piece 20791 are attracted to each other, the assembly gap between the ventilation panel 207 and the heat dissipation end plate 206 becomes small and uniform, and the ventilation panel 207 is less likely to shake. The magnetic force does not affect the positioning operation of the ventilation panel 207 relative to other components, thereby improving the operational performance of the ventilation panel 207 and preventing improper installation.

[0129] Furthermore, in the process of installing and removing the ventilation panel 207, damage to the first mounting portion 2069 and the second mounting portion 2079 is relatively small, and the ventilation panel 207 can be repeatedly disassembled and assembled multiple times without affecting the connection between the ventilation panel 207 and the heat-dissipating end plate 206. Compared with conventional connection structures such as screw connections and buckles, the ventilation panel 207 and the heat-dissipating end plate 206 of the embodiments of the present disclosure have better reliability even after repeated disassembly and assembly.

[0130] It should be noted that the magnetic component 20691 and the magnetic connecting piece 20791 can attract each other by magnetic force, facilitating the installation and removal of the ventilation panel 207, thereby increasing the convenience of installing and maintaining the module assembly, reducing the cost of installing and maintaining the module assembly, and ultimately improving the user experience. In some embodiments of the present disclosure, the magnetic component 20691 is a magnet having magnetic properties, and the magnetic connecting piece 20791 is iron, cobalt, nickel, and alloys thereof suitable for being attracted by the magnetic component 20691. In other embodiments of the present disclosure, the magnetic component 20691 and the magnetic connecting piece 20791 are magnets with opposite poles facing each other.

[0131] In some embodiments of the present disclosure, first mounting portion 2069 includes a first mounting base 20692 and second mounting portion 2079 includes a second mounting base 20792. One of magnetic component 20691 and magnetic linking piece 20791 is secured to first mounting base 20692 and the other is secured to second mounting base 20792, such that magnetic component 20691 and magnetic linking piece 20791 are secured to ventilation panel 207 and heat dissipating end plate 206, respectively.

[0132] In one embodiment of the present disclosure, as shown in Figures 47 and 48, the magnetic component 20691 is fixed to a first mounting base 20692 of the heat dissipation end plate 206, and the magnetic connecting piece 20791 is fixed to a second mounting base 20792 of the ventilation panel 207.

[0133] In another embodiment of the present disclosure (not shown), the magnetic connecting piece 20791 is fixed to a first mounting base 20692 of the heat dissipating end plate 206, and the magnetic component 20691 is fixed to a second mounting base 20792 of the ventilation panel 207.

[0134] In some embodiments of the present disclosure, both the magnetic component 20691 and the magnetic linking piece 20791 can be strip-shaped structures. The first mounting base 20692 is configured to be a first mounting groove suitable for fixedly engaging with the magnetic component 20691 or the magnetic linking piece 20791. The magnetic component 20691 or the magnetic linking piece 20791 can be connected to the first mounting groove by a welding connection, a buckle connection, a bolt connection, an adhesive connection, or the like, and the second mounting base 20792 is configured to be a second mounting groove suitable for fixedly engaging with the magnetic component 20691 or the magnetic linking piece 20791, and the magnetic component 20691 or the magnetic linking piece 20791 can be connected to the second mounting groove by a welding connection, a buckle connection, a bolt connection, an adhesive connection, or the like.

[0135] 12, 47, and 48, the first mounting base 20692 is located on the side of the heat dissipating end plate 206 facing the battery unit 220, and the second mounting base 20792 is located on the side of the ventilation panel 207 facing the heat dissipating end plate 206. After the heat dissipating end plate 206 and the ventilation panel 207 are assembled, the first mounting base 20692 and the second mounting base 20792 are hidden.

[0136] 12, 47, and 48, the first mounting portion 2069 includes a first positioning component 20693, and the second mounting portion 2079 includes a second positioning component 20793. The first positioning component 20693 is adapted to align and mate with the second positioning component 20793, such that the magnetic component 20691 and the magnetic coupling piece 20791 are directly opposed and attracted to each other, ensuring that the ventilation panel 207 is accurately installed on the heat dissipating end plate 206.

[0137] In one embodiment, the positioning engagement between the first positioning component 20693 and the second positioning component 20793 can be a pin-hole positioning fit or a slide-slot positioning fit.

[0138] In some embodiments of the present disclosure, one of the first positioning element 20693 and the second positioning element 20793 is a positioning hole, and the other is a positioning pin corresponding to the positioning hole. The positioning hole and the positioning pin have a simple structure that is easy to manufacture and highly reliable. When the positioning hole is inserted into the positioning pin, the magnetic element 20691 and the magnetic connecting piece 20791 face each other directly, facilitating accurate installation of the ventilation panel 207 on the heat dissipation end plate 206, thereby reducing the difficulty of installing the ventilation panel 207 and improving installation efficiency.

[0139] In one embodiment of the present disclosure, as shown in FIGS. 12, 47, and 48, the first locating component 20693 is a locating hole and the second locating component 20793 is a locating pin.

[0140] In another embodiment of the present disclosure (not shown), the first locating element 20693 is a locating pin and the second locating element 20793 is a locating hole.

[0141] 47 , the locating pin is provided with a guide surface 20794 suitable for guiding engagement with the inner wall surface of the locating hole, thereby facilitating insertion of the locating pin into the locating hole and improving assembly efficiency. The guide surface 20794 may be a conical guide surface disposed on the end of the locating pin facing toward the locating hole. When the locating pin is inserted into the locating hole, the conical guide surface enters the locating hole first and slides inward along the inner wall surface of the locating hole, aligning the axis of the locating pin with the axis of the locating hole.

[0142] In some embodiments of the present disclosure, the cross-sectional shape of the locating pin includes at least one of a rectangular, circular, T-shaped, and cross-shaped. When the cross-section of the locating pin is circular, the locating pin and the locating hole that fits with the locating pin can be easily processed and manufactured. When the cross-section of the locating pin is rectangular, T-shaped, or cross-shaped, the locating pin can be prevented from rotating or shaking within the locating hole, thereby improving the reliability of the connection between the ventilation panel 207 and the heat dissipation end plate 206. It should be noted that the cross-section of the locating pin is the projection of the locating pin on a plane perpendicular to the installation direction of the locating pin.

[0143] In some embodiments of the present disclosure, the ventilation panel 207 is provided with a plurality of second mounting portions 2079, such as four or eight, spaced apart around the circumference of the ventilation panel 207. The heat dissipating end plate 206 is provided with a plurality of first mounting portions 2069 that correspond one-to-one to the plurality of second mounting portions 2079, thereby facilitating an improved reliability of the connection between the ventilation panel 207 and the heat dissipating end plate 206 and preventing the ventilation panel 207 from falling off.

[0144] In some embodiments of the present disclosure, as shown in FIG. 47 , the ventilation panel 207 includes a panel frame 2071 and a ventilation grille 2072 fixed to the panel frame 2071. Second mounting portions 2079 are disposed on the panel frame 2071, and the panel frame 2071 can be fixed to the heat-dissipating end plate 206 via the second mounting portions 2079. The ventilation grille 2072 can be hollowed out to form an air duct, allowing the air blown out or sucked in by the driving fan 2061 to pass through the ventilation grille 2072 and ensuring the heat dissipation effect of the battery module 201. At the same time, the ventilation grille 2072 can also protect the heat-dissipating end plate 206 and prevent foreign objects from entering the driving fan 2061 and the battery unit 220, thereby ensuring the safety and reliability of the battery module 201.

[0145] It should be noted that the drive fan 2061 is a wear part compared with the service life of the battery unit 220. When the drive fan 2061 requires maintenance or needs to be replaced due to a malfunction, the ventilation panel 207 is removed to expose the drive fan 2061 attached to the heat-dissipating end plate 206. The disassembly and assembly instructions for the drive fan 2061 located on the heat-dissipating end plate 206 are located on the side of the end plate facing away from the battery unit 220. In other words, the disassembly and assembly direction for the drive fan 2061 is on the side of the heat-dissipating end plate 206 facing the ventilation panel 207. This allows for maintenance or replacement of the drive fan 2061 without having to remove the heat-dissipating end plate 206, thereby improving the convenience of maintenance of the module assembly. 12, the driving fan 2061 is mounted to the heat dissipation end plate 206 on the side opposite the battery unit 220 via a plurality of second fasteners 20611, which may be bolts. An energy storage cabinet 200 according to another embodiment of the present disclosure includes the module assembly of the above-described embodiment.

[0146] As shown in FIGS. 49 and 30 , multiple module assemblies can be arranged within an energy storage cabinet 200, and electrical connections are required between the battery modules 201 of these module assemblies. The connection terminals 202 for electrical connections of each battery module 201 can at least partially penetrate the heat-dissipating end plate 206. The connection terminals 202 of two adjacent battery modules 201 can be connected by an electrical connection assembly 100. A ventilation panel 207 can shield at least a portion of the connection terminals 202 and the electrical connection assemblies 100, preventing people from touching them and reducing the risk of electric shock. At the same time, if the number of battery modules 201 in the energy storage cabinet 200 needs to be increased or decreased, the connection terminals 202 on the heat-dissipating end plate 206 can be exposed by removing the ventilation panel 207, facilitating the assembly and disassembly of the electrical connection assembly 100 and thus improving the convenience of maintenance of the energy storage cabinet 200. In one embodiment, to facilitate disassembly and assembly of the ventilation panel 207 and electrical connection assembly 100, the heat dissipating end plate 206 of each battery module 201 in the energy storage cabinet 200 can be positioned toward the cabinet door of the energy storage cabinet 200.

[0147] According to the energy storage cabinet 200 of the embodiment of the present disclosure, a heat-dissipating end plate 206 is provided within the module assembly. A driving fan 2061 is provided on the heat-dissipating end plate 206. A ventilation panel 207 is provided on the outside of the heat-dissipating end plate 206. The ventilation panel 207 ensures the heat dissipation effect of the module assembly and prevents foreign objects from entering. The ventilation panel 207 can also improve the convenience of maintenance of the module assembly, thereby enhancing its market competitiveness.

[0148] 49 through 52 provide detailed depictions of an energy storage cabinet 200 according to an embodiment of the present disclosure.

[0149] 49 to 52, the energy storage cabinet 200 includes a battery module 201 and a high voltage distribution box.

[0150] The battery module 201 includes a driving fan 2061 and an information collector (BIC) 2062. The information collector 2062 can sample parameters such as the voltage and temperature of the battery cells in the battery module 201. The battery cells generate heat during charging and discharging, and the driving fan 2061 can be used to dissipate the heat from the battery cells to maintain an appropriate operating temperature. The information collector 2062 includes an integrated output terminal 20621, a signal input terminal 20622, and a power input terminal 20623. The integrated output terminal 20621 is connected to both the signal input terminal 20622 and the power input terminal 20623. The driving fan 2061 is connected to the integrated output terminal 20621, and the information collector 2062 provides power and a control signal to the driving fan 2061 via the integrated output terminal 20621.

[0151] The high-voltage distribution box 299 (PDU) includes a signal output terminal and a power output terminal. The signal output terminal is connected to the signal input terminal 20622. The high-voltage distribution box 299 provides a control signal to the signal input terminal 20622 via the signal output terminal. The power output terminal is connected to the power input terminal 20623, and the high-voltage distribution box 299 supplies power to the power input terminal 20623 via the power output terminal. The high-voltage distribution box 299 can generate a control signal for controlling the driving fan 2061 based on the temperature of the battery cells. The control signal is output from the signal output terminal, flows into the information collector 2062 via the signal input terminal 20622, and can then be transmitted to the driving fan 2061 via the integrated output terminal 20621, thereby adjusting the rotation speed of the driving fan 2061 to meet the heat dissipation requirements of the battery cells. At the same time, the high-voltage distribution box 299 also supplies power to the driving fan 2061. The power supply current is output from the power supply pull-out terminal, flows into the information collector 2062 via the power supply input terminal 20623, and then transmitted to the driving fan 2061 via the integrated output terminal 20621, thereby realizing the power supply to the driving fan 2061.

[0152] It should be noted that the information collector 2062 may be constructed of a printed circuit board (PCB) and electrically connected electronic components. The integrated output terminal 20621, the signal input terminal 20622, and the power input terminal 20623 may all be sockets on the printed circuit board. The signal input terminal 20622 and the integrated output terminal 20621 are connected via a second internal conductive line within the printed circuit board, and the power input terminal 20623 and the integrated output terminal 20621 are connected via a third internal conductive line within the printed circuit board. The integrated output terminal 20621 can transmit both power supply current and control signals to the drive fan 2061. In one embodiment, the second internal conductive line and the third internal conductive line may be copper foil within the printed circuit board.

[0153] It can be understood that the information collector 2062 integrates a portion of the external lines that supply power to the driving fan 2061 and a portion of the external lines that transmit control information for the driving fan 2061, and outputs the power supply current and control signal through the integrated output terminal 20621, thereby helping to reduce the complexity of the external lines between the high-voltage distribution box 299 and the battery module 201, and facilitating the layout and maintenance of the energy storage cabinet 200.

[0154] In some embodiments of the present disclosure, the battery module 201 further includes a battery cell and a heat-dissipating end plate 206. The heat-dissipating end plate 206 is located on one side of the battery cell. The driving fan 2061 and the information collector 2062 are both located on the heat-dissipating end plate 206. The driving fan 2061 can be connected to the integrated output terminal 20621 via an external integrated line 206111 so that the driving fan 2061 receives power current and control signals. To shorten the length of the external integrated line 206111, the driving fan 2061 and the information collector 2062 can be disposed adjacent to each other. In addition, based on the heat-dissipating requirements of the battery cell, the battery module 201 can be equipped with one or more driving fans 2061, all of which can be installed on the heat-dissipating end plate 206. Furthermore, multiple driving fans 2061 on the heat dissipation end plate 206 can be connected to the integrated output terminal 20621 via the same external integrated line 206111, further reducing the complexity of external lines within the energy storage cabinet 200.

[0155] According to the energy storage cabinet 200 of the embodiment of the present disclosure, both the power supply current and the control signal of the driving fan 2061 pass through the information collector 2062 and are transmitted to the driving fan 2061 via the information collection integrated output terminal 20621. This arrangement helps to reduce the complexity of external wiring within the energy storage cabinet 200 and facilitate its assembly, inspection, and maintenance.

[0156] 49 and 50 , an energy storage cabinet 200 includes a plurality of battery modules 201 stacked along a first direction, and the information collector 2062 of each battery module 201 is aligned in the first direction. The power input terminal 20623 of each battery module 201 is connected to the power draw-out terminal via a first external power line, which facilitates the layout of the first external power line within the energy storage cabinet 200 and reduces bending of these lines.

[0157] The first direction may be the height direction of the energy storage cabinet 200. That is, the battery modules 201 in the energy storage cabinet 200 may be stacked along the height direction of the energy storage cabinet 200, and the heat dissipation end plates 206 having the driving fans 2061 and information collectors 2062 of each battery module 201 facing the same direction are aligned along the stacking direction. This arrangement is advantageous for the layout of the first external power line in the energy storage cabinet 200 and reduces bending of the first external power line.

[0158] 51 , the first external power line includes multiple power supply branches 2990, and the number of power supply branches 2990 corresponds to the number of battery modules 201. In other words, the number of power supply branches 2990 is the same as the number of battery modules 201. Each power supply branch 2990 includes a main branch line 20631 and a sub-branch line 20634 connected in parallel to the main branch line 20631. The main branch lines 20631 of the multiple power supply branches 2990 are connected in sequence to form a main power supply circuit. The sub-branch lines 20634 of the multiple power supply branches 2990 are respectively connected to corresponding power input terminals 20623, thereby realizing a parallel connection between the driving fans 2061 on each battery module 201 and the main power supply circuit.

[0159] It can be understood that the number of battery modules 201 in the energy storage cabinet 200 can be adjusted according to battery demand. The first external power line is divided into multiple detachable power branches 2990, and the number of the power branches 2990 can correspond to the number of battery modules 201. This arrangement ensures that when there are few battery modules 201 in the energy storage cabinet 200, redundancy and waste of the first external power line can be avoided, thereby reducing the cost of the energy storage cabinet 200 and the complexity of the external lines in the energy storage cabinet 200, and facilitating its assembly, inspection, and maintenance.

[0160] In some embodiments of the present disclosure, as shown in Fig. 51 , a male connector 20632 is provided at one end of a branch main line 20631, and a female connector 20633 is provided at the other end. Of two adjacent branch main lines 20631, the male connector 20632 of one branch main line 20631 is inserted into the female connector 20633 of the other branch main line 20631 to connect them, which makes it easy to install, disassemble, and maintain multiple branch main lines 20631.

[0161] 50 and 51 , the information collector 2062 also includes a clamping socket 20625, and the male connector 20632 and / or the female connector 20633 are suitable for being fixed in the clamping socket 20625. In other words, either the male connector 20632 or the female connector 20633 are suitable for being fixed in the clamping socket 20625, or both the male connector 20632 and the female connector 20633 are suitable for being fixed in the clamping socket 20625, thereby facilitating control of the routing of the first external power supply line and avoiding heat generation and signal interference caused by crossing of the first external power supply line. At the same time, this can also prevent the male connector 20632 and the female connector 20633 from loosening at the connection point and improve the reliability of the plug-in connection between the male connector 20632 and the female connector 20633. In one embodiment, the clamping socket 20625 can be fixed to the outside of the printed circuit board of the information collector 2062.

[0162] In some embodiments of the present disclosure, the information collector 2062 further includes a first fuse, which is connected in series in the circuit between the power supply input terminal 20623 and the integrated output terminal 20621, thereby providing overload protection for the driving fan 2061. When the current between the power supply input terminal 20623 and the integrated output terminal 20621 abnormally rises to a first preset current threshold, the electrical connection between the power supply input terminal 20623 and the integrated output terminal 20621 is cut off, thereby increasing the service life and reliability of the driving fan 2061.

[0163] In some embodiments of the present disclosure, the first fuse is a self-recovery fuse. When a short circuit or overcurrent occurs in the circuit between the power supply input terminal 20623 and the integrated output terminal 20621, the large current flowing through the first fuse causes the first fuse to form a high resistance state, thereby limiting and protecting the circuit between the power supply input terminal 20623 and the integrated output terminal 20621. After the fault is removed, the first fuse returns to a low resistance state, allowing the circuit between the power supply input terminal 20623 and the integrated output terminal 20621 to be conductive, thereby avoiding manual replacement of the first fuse and reducing maintenance costs of the energy storage cabinet 200.

[0164] 49 and 52 , the information collector 2062 further includes a power output terminal 20624 and a first internal conductive line. The power output terminal 20624 is connected to the power input terminal 20623 via the first internal conductive line. The integrated output terminal 20621 is connected in parallel to the first internal conductive line. The energy storage cabinet 200 includes a plurality of battery modules 201 stacked along a first direction, and the information collectors 2062 of each battery module 201 are aligned in the first direction. The power input terminal 20623 of one of the plurality of battery modules 201 is connected to the power draw-out terminal, and the power input terminals 20623 of the remaining battery modules 201 are connected to the power output terminal 20624 of the upstream adjacent battery module 201 via a second external power line 2065, thereby shortening the length of the second external power line 2065 and facilitating their layout within the energy storage cabinet 200. The upstream adjacent battery module 201 may be understood to refer to the adjacent battery module 201 through which the power supply current flows first.

[0165] It should be noted that the information collector 2062 may be constructed of a printed circuit board (PCB) and electrically connected electronic components. The integrated output terminal 20621, the signal input terminal 20622, the power input terminal 20623, and the power output terminal 20624 may all be sockets on the printed circuit board. The power output terminal 20624 and the power input terminal 20623 are connected via a first internal conductive line within the printed circuit board, and the signal input terminal 20622 and the integrated output terminal 20621 are connected via a second internal conductive line within the printed circuit board. The integrated output terminal 20621 is connected in parallel with the first internal conductive line via a third internal conductive line. The integrated output terminal 20621 can transmit both power supply current and control signals to the drive fan 2061. In one embodiment, the first internal conductive line, the second internal conductive line, and the third internal conductive line may be copper foil within the printed wiring board.

[0166] A plurality of battery modules 201 in the energy storage cabinet 200 can be stacked along the height direction of the energy storage cabinet 200, with the heat dissipation end plates 206 having the driving fans 2061 and information collectors 2062 of each battery module 201 facing the same direction aligned along the stacking direction. This arrangement is advantageous for the layout of the second external power lines 2065 in the energy storage cabinet 200 and reduces bending of the second external power lines 2065. At the same time, the number of second external power lines 2065 may be the same as the number of battery modules 201. Both ends of the second external power line 2065 are connected to the power input terminal 20623 and the power output terminal 20624 of the adjacent battery modules 201, respectively, to connect the first internal conductive lines in the two adjacent battery modules 201 and form a main power circuit. At the same time, the integrated output terminal 20621 of each battery module 201 is also connected in parallel with the first internal conductive line, so that the driving fan 2061 on each battery module 201 is connected in parallel with the main power circuit.

[0167] In some embodiments of the present disclosure, the number of battery modules 201 in the energy storage cabinet 200 can be adjusted according to power demand. The battery module 201 closest to the high-voltage distribution box 299 in the energy storage cabinet 200 can be designated as the most upstream battery module. The power input terminal 20623 of the most upstream battery module is connected to the power draw-out terminal, and the power input terminals 20623 of the remaining battery modules 201 are connected to the power output terminals 20624 of their upstream adjacent battery modules 201 via second external power lines 2065. The number of second external power lines 2065 corresponds to the number of battery modules 201. This arrangement ensures that redundancy and waste of the second external power lines 2065 can be avoided when there are few battery modules 201 in the energy storage cabinet 200, thereby reducing the cost of the energy storage cabinet 200 and the complexity of the external lines within the energy storage cabinet 200, and facilitating its assembly, inspection, and maintenance.

[0168] For example, the energy storage cabinet 200 includes a first battery module, a second battery module, and a third battery module stacked in order from bottom to top. The first battery module located at the bottom is closest to the high-voltage distribution box 299 and functions as the most upstream battery module. The power input terminal 20623 of the first battery module is connected to the power draw terminal. The power input terminal 20623 of the second battery module is connected to the power output terminal 20624 of the first battery module connected upstream via a second external power line 2065. Similarly, the power input terminal 20623 of the third battery module is connected to the power output terminal 20624 of the second battery module connected upstream via another second external power line 2065. Power current flows from the power draw terminal through the information collectors 2062 of the first battery module, the second battery module, and the third battery module in sequence.

[0169] Furthermore, as shown in FIG. 4 , among the multiple battery modules 201 in the energy storage cabinet 200, the power output terminal 20624 of one battery module 201 is adjacent to the power input terminal 20623 of another adjacent battery module 201, which is beneficial to shorten the length of the second external power line 2065, facilitate the layout of the second external power line 2065, and prevent interference between the multiple second external power lines 2065.

[0170] In some embodiments of the present disclosure, the information collector 2062 further includes a second fuse, which is connected in series in the circuit between the power input terminal 20623 and the power output terminal 20624, to provide overload protection for each information collector 2062 in the main power circuit. When the current between the power input terminal 20623 and the power output terminal 20624 abnormally rises to a second preset current threshold, the second fuse can cut off the electrical connection between the power input terminal 20623 and the power output terminal 20624, thereby increasing the service life and reliability of the second external power line 2065.

[0171] In some embodiments of the present disclosure, the second fuse is a self-recovery fuse. When a short circuit or overcurrent occurs in the circuit between the power supply input terminal 20623 and the power supply output terminal 20624, the large current flowing through the second fuse causes the second fuse to form a high resistance state, thereby limiting and protecting the circuit between the power supply input terminal 20623 and the power supply output terminal 20624. After the fault is removed, the second fuse returns to a low resistance state, allowing the circuit between the power supply input terminal 20623 and the power supply output terminal 20624 to be conductive, thereby avoiding manual replacement of the second fuse and reducing maintenance costs of the energy storage cabinet 200.

[0172] 50 , 51 , and 52 , the information collector 2062 also includes a signal output terminal 20626. Among the multiple battery modules 201, the signal input terminal 20622 of one information collector 2062 is connected to the signal output terminal, and the signal input terminals 20622 of the remaining information collectors 2062 are connected to the signal output terminal 20626 of the upstream adjacent battery module 201 via the external signal line 2066. This arrangement reduces the length of the external signal line 2066 and facilitates the layout of the second external power line 2065 within the energy storage cabinet 200. The upstream adjacent battery module 201 may be understood to refer to the adjacent battery module 201 through which the power supply current flows first.

[0173] It can be understood that the number of battery modules 201 in the energy storage cabinet 200 can be adjusted according to power demand. The battery module 201 closest to the high-voltage distribution box 299 in the energy storage cabinet 200 can be designated as the most upstream battery module. The signal input terminal 20622 of the most upstream battery module is connected to the signal output terminal, and the signal input terminals 20622 of the remaining battery modules 201 are connected to the signal output terminals 20626 of their upstream adjacent battery modules 201 via external signal lines 2066. The number of external signal lines 2066 corresponds to the number of battery modules 201. This arrangement ensures that redundancy and waste of external signal lines 2066 can be avoided when there are few battery modules 201 in the energy storage cabinet 200, thereby reducing the cost of the energy storage cabinet 200 and the complexity of the external lines within the energy storage cabinet 200, and facilitating its assembly, inspection, and maintenance.

[0174] For example, the energy storage cabinet 200 includes a first battery module, a second battery module, and a third battery module stacked from bottom to top. The first battery module located at the bottom is closest to the high-voltage distribution box 299 and functions as the most upstream battery module. The signal input terminal 20622 of the first battery module is connected to the signal output terminal 20626 of the first battery module connected upstream via an external signal line 2066. Similarly, the signal input terminal 20622 of the third battery module is connected to the signal output terminal 20626 of the second battery module connected upstream via another external signal line 2066. Control information can be transmitted from the signal output terminal to the information collectors 2062 of the first battery module, the second battery module, and the third battery module.

[0175] In some embodiments of the present disclosure, the control signal includes ID information and control information. Upon receiving and transmitting the control signal, the information collector 2062 of each battery module 201 can process the control signal to identify whether the ID information in the control signal matches that of the information collector 2062 itself. If the ID information matches, control information corresponding to the ID information is sent to the driving fan 2061 connected to the information collector 2062. If the ID information does not match, no response is made.

[0176] For example, if the high-voltage distribution box 299 needs to control the driving fan 2061 of the first battery module to increase its rotation speed by 5%, the high-voltage distribution box 299 generates a first control signal. The first control signal includes the ID information of the information collector 2062 of the first battery module and control information for increasing the rotation speed of the driving fan 2061 by 5%. The first control signal can be broadcast to the information collectors 2062 of the first battery module, the second battery module, and the third battery module. The information collector 2062 of the first battery module recognizes that the ID information matches and sends corresponding control information to the driving fan 2061 connected to its integrated output terminal 20621, thereby increasing the rotation speed of the driving fan 2061 of the first battery module by 5%.

[0177] In some embodiments of the present disclosure, as shown in FIGS. 50 and 51 , the information collector 2062 also includes a first clamping groove 20627, which can be used to secure the external signal line 2066 and facilitates controlling the routing of the external signal line 2066.

[0178] In some embodiments of the present disclosure, as shown in FIG. 50 and FIG. 51 , the information collector 2062 further includes a second clamping groove 20628, which can be used to secure the power supply branch 2990 and facilitates controlling the routing of the power supply branch 2990.

[0179] In some embodiments of the present disclosure, a switching power supply can be integrated into the high-voltage power distribution box 299, and the switching power supply converts 220V AC main power through AC-DC conversion and outputs 24V DC power from the power draw terminals.

[0180] In another embodiment of the present disclosure, a BMS (Battery Management System) main board can be integrated into the high-voltage power distribution box 299. The BMS main board can take samples from the battery cells of the battery module 201 and output 24V DC power through the power draw terminals.

[0181] 49, a high-voltage distribution box 299 is provided in the left part of the energy storage cabinet 200 (i.e., on the left side of the battery modules 201). The high-voltage distribution box 299 can route the main power supply lines and the main control lines from below the battery modules 201. The main power supply lines are equipped with power lead-out terminals, and the main control lines are equipped with signal lead-out terminals.

[0182] In the description herein, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "particular example," or "some examples" is intended to indicate particular features, structures, materials, or characteristics that are included in at least one embodiment or example of the present disclosure. General references to such terms herein do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics that are described may be combined in any suitable manner in any one or more embodiments or examples.

[0183] While embodiments of the present disclosure have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and scope of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. 1. An energy storage cabinet comprising: A cabinet (60) in which a first space (40) and a second space (41) are formed; a plurality of battery modules (201), the plurality of battery modules (201) being arranged in the first space (40), the plurality of battery modules (201) being stacked in a first direction of the energy storage cabinet (200), and the first space (40) and the second space (41) being arranged side by side in a second direction perpendicular to the first direction; a control unit (1000) disposed in the second space (41) and electrically connected to the battery module (201); A third space (42) is formed in the cabinet (60), the third space (42) is in communication with the first space (40) and the second space (41), and the air in the second space (42) is adapted to flow into the first space (40) through the third space (42); An energy storage cabinet, wherein a first channel (43) is formed in the cabinet (60), the first channel (43) and the first space (40) are arranged along the first direction, and the first channel (43) is in communication with the first space (40) and / or the third space (42).

2. 2. The energy storage cabinet of claim 1, wherein the second space (41) is adapted to direct an air flow into the first space (40).

3. 3. The energy storage cabinet of claim 2, wherein the first space (40) communicates with the second space (41).

4. 2. The energy storage cabinet of claim 1, wherein the cabinet (60) has a base and a top plate spaced apart in the first direction, and the first channel (43) is located between the top plate and the base.

5. 2. The energy storage cabinet of claim 1, further comprising an air conditioner (50), the air conditioner (50) having an air outlet (51) and an air inlet (52), the air outlet (51) communicating with the second space (41) and / or the first channel (43), and the air inlet (52) communicating with the first space (40).

6. 6. The energy storage cabinet of claim 5, wherein an end of the first space (40) adjacent to the air inlet (52) is open to form a first opening, and an end of the second space (41) adjacent to the air outlet (51) is open to form a second opening, and the first opening and the second opening are separated by a spacer.

7. 2. The energy storage cabinet of claim 1, wherein the third space (42) and the first space (40) are disposed in a third direction of the energy storage cabinet, the third direction being perpendicular to both the first direction and the second direction.

8. The battery module further includes a positive power line (1001) and a negative power line (1002), one end of the positive power line (1001) being connected to the control unit (1000) and the other end of the positive power line (1001) being adapted to be inserted into a connection terminal (202) of the battery module (201); 8. The energy storage cabinet according to claim 1, wherein one end of the negative power line (1002) is connected to the control unit (1000), and the other end of the negative power line (1002) is suitable for being inserted into the connection terminal (202) of the battery module (201).

9. 9. The energy storage cabinet of claim 8, wherein one end of the positive power line (1001) and one end of the negative power line (1002) are both located within the second space (41), and the other end of the positive power line (1001) and the other end of the negative power line (1002) are both located within the first space (40).

10. 8. The energy storage cabinet of claim 1, wherein the battery module (201) comprises a battery unit (220), the battery unit (220) comprises a plurality of battery cells (208), the plurality of battery cells (208) are sequentially arranged along a thickness direction of the battery cells (208), a first air duct (210) extending along a third direction is formed between at least two adjacent battery cells (208), the third direction is perpendicular to both the first direction and the second direction, and the first air duct (210) is in communication with the first space (40).

11. The battery module (201) a first side plate (211) and a second side plate (212), between which the battery unit (220) is arranged; 11. The energy storage cabinet of claim 10, further comprising: a support beam (219) extending along the thickness direction of the battery cell (208) and connecting the first side plate (211) and the second side plate (212) so that the first side plate (211) and the second side plate (212) sandwich the battery unit (220), and the support beam (219) is located on at least one side of the battery unit (220) in the width direction of the battery cell (208).

12. 12. The energy storage cabinet of claim 11, wherein the battery module (201) further comprises a top cover (213) and a bottom cover (214), the top cover (213) and the bottom cover (214) are both connected to the first side panel (211) and the second side panel (212), the battery unit (220) is located between the top cover (213) and the bottom cover (214), and a second air duct (216) is formed between the top cover (213) and the battery unit (220) and / or between the bottom cover (214) and the battery unit (220) by a separating action of the support beam (219), and the second air duct (216) is connected to the first space (40).

13. 13. The energy storage cabinet of claim 12, wherein the support beams (219) are in contact with a surface of the battery unit (220) close to the top cover (213) and the top cover (213) to divide the second air duct (216) into a plurality of sub-air ducts (217), and / or the support beams (219) are in contact with a surface of the battery unit (220) close to the bottom cover (214) and the bottom cover (214), and the support beams (219) have air passages (218) connecting two adjacent sub-air ducts (217).

14. 13. The energy storage cabinet according to claim 12, wherein the battery module (201) is provided with an air supply hole (215), the air supply hole (215) being in communication with the first space (40) and the second air duct (216).

15. 11. The energy storage cabinet of claim 10, wherein the battery module (201) further comprises a heat sink (209), the heat sink (209) being arranged between at least two adjacent battery cells (208), and the heat sink (209) defining the first air duct (210).

16. 16. The energy storage cabinet of claim 15, wherein the plurality of battery cells (208) form a plurality of battery cell (208) groups, each group comprising at least one battery cell (208), and the heat sink (209) is arranged between two adjacent battery cell groups.

17. 12. The energy storage cabinet of claim 11, wherein the battery module (201) further comprises a drive fan (2061), the drive fan (2061) being arranged at one end of the battery unit (220) in the length direction of the battery cells (208) and spaced apart from the battery unit (220), and the drive fan (2061) being used to drive air to flow along the first air duct (210) in the first air duct.

18. 18. The energy storage cabinet of claim 17, wherein the battery module (201) further comprises a temperature detection component, the temperature detection component is used to detect the temperature of the battery module (201), both the driving fan (2061) and the temperature detection component are suitable for connection to a battery management system of the battery module (201), and the battery management system is used to control the operation mode of the driving fan (2061) by receiving temperature information detected by the temperature detection component.

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