An energy storage device

Abstract

This application discloses an energy storage device, including a chassis, a battery cell assembly, an electronic control assembly, a support member, and a connecting assembly. The chassis includes a first housing and a second housing, which together form a receiving cavity. The receiving cavity includes a first cavity near the first housing and a second cavity near the second housing. An operating port is provided on the chassis. The battery cell assembly and the electronic control assembly are respectively installed in the first cavity and the second cavity. The support member is installed in the receiving cavity. The connecting assembly includes fasteners and two electrical connectors. Each electrical connector includes a first connecting portion and a second connecting portion connected to the first connecting portion. The first connecting portions of the two electrical connectors are respectively connected to the battery cell assembly and the electronic control assembly, and the second connecting portions have first connecting holes. The fasteners pass through the first connecting holes of the two second connecting portions and are connected to the support member to fix the second connecting portions of the two electrical connectors to the support member. This can improve the safety and reliability of the energy storage device.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more particularly to an energy storage device. Background Technology

[0002] Energy storage devices typically include a protective shell, a battery cell module located inside the protective shell, and an electronic control module. The protective shell is formed by splicing two detachable shells. The battery cell module includes multiple energy storage batteries, and the electronic control module is used to control the operation of the battery cell module.

[0003] In related technologies, the battery cell module and the electronic control module are usually installed on two separate housings. When assembling energy storage devices, the process of splicing the two housings together can easily cause the electrical connectors to bend significantly, which can lead to the loosening of the connection between the electrical connectors and the battery cell module and the electronic control module, affecting the safety and reliability of the energy storage device. Utility Model Content

[0004] This application provides an energy storage device that can prevent the two electrical connectors from bending significantly when the first and second housings are closed, which could lead to loosening of the connections between the electrical connectors and the battery cell assembly and the electronic control assembly, thereby improving the safety and reliability of the energy storage device.

[0005] Specifically, an energy storage device is characterized by comprising:

[0006] The chassis includes a first housing and a second housing connected to the first housing. The second housing and the first housing enclose a receiving cavity. The receiving cavity includes a first cavity near the first housing and a second cavity near the second housing. The chassis is provided with an operating port communicating with the receiving cavity.

[0007] The battery cell assembly is installed in the first cavity;

[0008] The electronic control components are installed in the second cavity;

[0009] A support member is installed within the receiving cavity and is connected to the chassis;

[0010] A connecting assembly is installed within the receiving cavity. The connecting assembly includes a fastener and two electrical connectors. Each electrical connector includes a first connecting portion and a second connecting portion connected to the first connecting portion. The first connecting portions of the two electrical connectors are respectively connected to the battery cell assembly and the electronic control assembly. The operating port, the second connecting portions of the two electrical connectors, and the support member are arranged sequentially along a first direction. The second connecting portion has a first connecting hole extending along the first direction. The first connecting hole is positioned opposite to the operating port, so that after the fastener enters the receiving cavity through the operating port, the fastener can pass through the first connecting holes of the two second connecting portions and connect to the support member to fix the second connecting portions of the two electrical connectors to the support member, thereby electrically connecting the battery cell assembly and the electronic control assembly.

[0011] The beneficial effects of this application are as follows: placing the battery cell assembly and the electronic control assembly in the first housing and the second housing respectively can improve the space utilization rate within the housing cavity, thereby reducing the volume of the first housing and the second housing, and thus reducing the volume of the energy storage device; in addition, the operating port can provide a channel for fasteners to enter and exit the housing cavity. When assembling the energy storage device, after the first housing and the second housing are closed, fasteners can be used to enter the housing cavity through the operating port and connect and fix the two electrical connectors, thereby realizing the electrical connection between the battery cell assembly and the electronic control assembly. This can prevent the two electrical connectors from bending significantly when the first housing and the second housing are closed, which could lead to loosening of the connection between the electrical connectors and the battery cell assembly and the electronic control assembly, thereby improving the safety and reliability of the energy storage device. Furthermore, the connection between the battery cell assembly and the electronic control assembly is more convenient, which can improve the assembly convenience and smoothness of the energy storage device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the energy storage device in one embodiment of this application;

[0014] Figure 2 This is a partial structural schematic diagram of an energy storage device in one embodiment of this application;

[0015] Figure 3 This is an exploded view of the components of an energy storage device in one embodiment of this application;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0017] Figure 5 This is a schematic diagram of the structure of the support member and the connecting assembly in one embodiment of this application;

[0018] Figure 6 This is a schematic diagram of the support member in one embodiment of this application;

[0019] Figure 7 This is a schematic diagram of the structure of the protective frame in one embodiment of this application.

[0020] Figure label:

[0021] 10. Chassis; 11. First housing; 111. First cavity; 112. First base plate; 113. First side plate; 12. Second housing; 121. Second cavity; 122. Second base plate; 123. Second side plate; 13. Receiving cavity; 14. Operating port; 15. Sealing groove; 20. Battery cell assembly; 30. Electronic control assembly; 40. Support member; 41. Support body; 42. Limiting part; 43. Connecting post; 431. Second connecting hole; 44. Limiting groove; 45. Support 46. ​​Clearance groove; 47. First reinforcing structure; 48. Second reinforcing structure; 50. Connecting assembly; 51. Fastener; 52. Electrical connector; 521. First connecting part; 522. Second connecting part; 523. First connecting hole; 524. Transition part; 60. Protective frame; 61. Mounting channel; 62. Insertion part; 63. Third reinforcing structure; 70. Fan; 80. Sealing cover; 90. Seal; XX, First direction; YY, Second direction; ZZ, Third direction. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] Energy storage devices typically include a protective shell, a battery cell module located inside the protective shell, and an electronic control module. The protective shell is formed by splicing two detachable shells. The battery cell module includes multiple energy storage batteries, and the electronic control module is used to control the operation of the battery cell module.

[0024] When assembling energy storage devices, if the battery cell module and the control module are both installed on the same housing, the housing needs to have a larger volume to accommodate the battery cell module and the control module, which will increase the size of the energy storage device. In addition, the space in the other housing will not be utilized, resulting in low space utilization.

[0025] If the battery cell module and the control module are installed on two separate housings, they must first be connected using electrical connectors such as wiring harnesses. Then, the two housings are joined together. During the joining process, the electrical connectors are prone to significant bending, which can cause them to loosen at the connection points between the connectors and the battery cell module and the control module. Loose connectors can easily cause short circuits and other risks inside the housing, affecting the safety and reliability of the energy storage device.

[0026] This application provides an energy storage device to solve the above-mentioned technical problems.

[0027] like Figures 1 to 3 As shown, the energy storage device includes a chassis 10, a battery cell assembly 20, an electronic control assembly 30, a support component 40, and a connection assembly 50.

[0028] The chassis 10 includes a first housing 11 and a second housing 12 connected to the first housing 11. The second housing 12 and the first housing 11 enclose a receiving cavity 13. The receiving cavity 13 includes a first cavity 111 near the first housing 11 and a second cavity 121 near the second housing 12. It is understood that the first housing 11 and the second housing 12 are disposed opposite to each other, and the first housing 11 and the second housing 12 respectively form the first cavity 111 and the second cavity 121. When the first housing 11 and the second housing 12 are joined together, the first cavity 111 and the second cavity 121 communicate to form the receiving cavity 13.

[0029] The cell assembly 20 is installed in the first cavity 111. The cell assembly 20 may include a mounting frame and multiple energy storage batteries mounted on the mounting frame. The energy storage batteries can store electrical energy and supply power to electrical devices. This application does not limit the type and size of the energy storage batteries.

[0030] The electronic control component 30 is installed within the second cavity 121. The electronic control component 30 can be electrically connected to the battery cell assembly 20 to control the charging and discharging operation of the battery cell assembly 20. The electronic control component 30 includes components such as a circuit board and can be a DC power module. It should be noted that in this application, placing the battery cell assembly 20 and the electronic control component 30 in the first housing 11 and the second housing 12 respectively can improve the space utilization within the receiving cavity 13, thereby reducing the volume of the first housing 11 and the second housing 12, and consequently reducing the volume of the energy storage device.

[0031] The support member 40 is installed in the receiving cavity 13 and connected to the chassis 10. The support member 40 can be connected to at least one of the first housing 11 and the second housing 12.

[0032] The connecting component 50 is installed inside the receiving cavity 13, and the battery cell assembly 20 and the electronic control assembly 30 are electrically connected through the connecting component 50.

[0033] Specifically, such as Figures 3 to 5 As shown, the connecting assembly 50 includes two electrical connectors 52. Each electrical connector 52 includes a first connecting portion 521 and a second connecting portion 522 connected to the first connecting portion 521. The first connecting portions 521 of the two electrical connectors 52 are respectively connected to the battery cell assembly 20 and the electronic control assembly 30, and the second connecting portions 522 of the two electrical connectors 52 are connected to each other. It can be understood that both electrical connectors 52 are conductive. The battery cell assembly 20 is electrically connected to the electronic control assembly 30 through the connection of the two electrical connectors 52. The two electrical connectors 52 can have the same or different shapes, and the materials of the two electrical connectors 52 can be the same or different. The electrical connectors 52 can be copper busbars or aluminum busbars, etc.

[0034] The connecting assembly 50 further includes a fastener 51. The housing 10 has an operating port 14 communicating with the receiving cavity 13. The operating port 14 can be located on at least one of the first housing 11 and the second housing 12. The second connecting portions 522 of the two electrical connectors 52 and the support member 40 are arranged sequentially along a first direction XX. The second connecting portions 522 have first connecting holes 523 extending along the first direction XX. The first connecting holes 523 are opposite to the operating port 14, so that after the fastener 51 enters the receiving cavity 13 through the operating port 14, the fastener 51 can pass through the first connecting holes 523 of the two second connecting portions 522 and connect to the support member 40, thereby fixing the second connecting portions 522 of the two electrical connectors 52 to the support member 40, and thus electrically connecting the battery cell assembly 20 and the electronic control assembly 30. The fastener 51 can be connected to the support member 40 by threaded connection or snap-fit, etc. The fastener 51 is a threaded connector (such as a screw or bolt) or a snap-fit, etc. The first direction XX can be the depth direction of the first cavity 111 and the second cavity 121. When the chassis 10 is a cuboid, the first direction XX can be the height direction of the chassis 10. When the bottom surface of the chassis 10 is in contact with the ground or other supporting planes, the first direction XX can be the height direction of the chassis 10.

[0035] It should be noted that the operating port 14 provides a channel for the fastener 51 to enter and exit the receiving cavity 13. When assembling the energy storage device, the cell assembly 20 and the electronic control assembly 30 can be installed in the first housing 11 and the second housing 12 respectively. Then, the positions of the first housing 11 and the second housing 12 are adjusted so that after the first housing 11 and the second housing 12 are closed, the second connecting parts 522 of the two electrical connectors 52 and the support member 40 are arranged sequentially along the first direction XX, and the first connecting holes 523 of the two second connecting parts 522 are opposite to each other. Then, the fastener 51 can be entered into the receiving cavity 13 through the operating port 14 and passed through the first connecting holes 523 on the two second connecting parts 522. The fastener 51 is then connected to the support member 40, thereby realizing the connection and fixation of the two electrical connectors 52. The support member 40 can be used to fasten the fastener. When the fastener 51 connects the two electrical connectors 52, it provides support for the electrical connectors 52 and limits them along the first direction XX, making it easier for the fastener 51 to be inserted into the first connection hole 523. After the first housing 11 and the second housing 12 are closed, the fastener 51 can be used to connect and fix the two electrical connectors 52, thereby realizing the electrical connection between the cell assembly 20 and the electronic control assembly 30. This can prevent the two electrical connectors 52 from bending significantly when the first housing 11 and the second housing 12 are closed, which could cause the connection between the electrical connectors 52 and the cell assembly 20 and the electronic control assembly 30 to become loose. This avoids the possibility of a short circuit caused by a loose electrical connector 52 in the chassis 10, which can improve the safety and reliability of the energy storage device. In addition, the connection between the cell assembly 20 and the electronic control assembly 30 is more convenient, which can improve the assembly convenience and smoothness of the energy storage device.

[0036] In some embodiments, the support member 40 and the second connecting portion 522 are both located on the side of the cell assembly 20 facing the electronic control assembly 30. It is understood that, generally speaking, the larger the volume of the cell assembly 20, the more energy storage batteries it can accommodate, and the greater its energy storage capacity. By placing the support member 40 and the second connecting portion 522 on the side of the cell assembly 20 facing the electronic control assembly 30, it is possible to prevent the support member 40 and the second connecting portion 522 from encroaching on the side space of the cell assembly 20, so that the periphery of the cell assembly 20 can fit against the inner wall surface of the first cavity 111, thereby allowing the cell assembly 20 to have a larger volume and energy storage capacity.

[0037] Furthermore, the projection of the electronic control component 30 on the cell assembly 20 and the projection of the second connection portion 522 on the cell assembly 20 are spaced apart, so that the electronic control component 30 can be set to avoid the second connection portion 522, preventing the fastener 51 from colliding with the electronic control component 30 when the fastener 51 is disassembled and assembled with the second connection portion 522, which would cause damage to the electronic control component 30.

[0038] Furthermore, the projection of the electronic control component 30 onto the cell assembly 20 and the projection of the support member 40 onto the cell assembly 20 are spaced apart, allowing the electronic control component 30 to be set away from the support member 40, making the arrangement of the support member 40 more convenient.

[0039] In some embodiments, the electrical connection portion may further include a transition portion 524, the two ends of which are respectively connected to the first connection portion 521 and the second connection portion 522, so as to connect the first connection portion 521 and the second connection portion 522 through the transition portion 524.

[0040] In some embodiments, see Figure 3 As shown, the first housing 11 includes a first base plate 112 (e.g., Figure 2 The first bottom plate 112 and the second bottom plate 123 are arranged around and connected to the first bottom plate 112. The first bottom plate 113 includes multiple first side plates. The second housing 12 includes a second bottom plate 122 and a second bottom plate 123. The second bottom plate 123 is arranged around and connected to the second bottom plate 122. The second bottom plate 123 includes multiple second side plates. The first bottom plate 112, the first bottom plate 113, the second bottom plate 122 and the second bottom plate 123 together enclose and form a receiving cavity 13.

[0041] In some embodiments, the first housing 11 and the second housing 12 are arranged along a first direction XX, and the operation port 14 is opened in the second housing 12 and located on the side of the support member 40 away from the cell assembly 20. It can be understood that in this embodiment, the first base plate 112 and the second base plate 122 are disposed opposite to each other and arranged along the first direction XX, and the first peripheral side plate 113 and the second peripheral side plate 123 are arranged along the first direction XX and contact the second peripheral side plate 123. At this time, the operation port 14 is opened on the second base plate 122. Compared with the first side plate and the second side plate, the surface area of ​​the second base plate 122 is generally larger, and it has a larger area to open the operation port 14, so that the operation port 14 can be designed to be larger, making it more convenient for the user to reach into the receiving cavity 13 through the operation port 14 to install or remove the fastener 51.

[0042] In other embodiments, the arrangement direction of the first housing 11 and the second housing 12 is perpendicular to the first direction XX, and the operating port 14 is opened on the first housing 11 or the second housing 12. It can be understood that in this embodiment, the first base plate 112 and the second base plate 122 are arranged opposite each other and arranged in a direction perpendicular to the first direction XX, and the first peripheral side plate 113 and the second peripheral side plate 123 are arranged in a direction perpendicular to the first direction XX. At this time, the operating port 14 is opened on the first peripheral side plate 113 or the second peripheral side plate 123. The operating port 14 can be opened on the first side plate or the second side plate that is closest to the support member 40, so that the distance between the operating port 14 and the second connecting part 522 and the support member 40 is smaller, thereby making the connection between the fastener 51 and the second connecting part 522 and the support member 40 more convenient.

[0043] See Figures 4 to 6 As shown, in some embodiments, the second connecting portion 522 extends along the second direction YY, and the support member 40 includes a support body 41, two limiting portions 42, and a connecting post 43.

[0044] The support body 41 is connected to the chassis 10. Two limiting parts 42 are located on the side of the support body 41 facing the second connecting part 522 and are connected to the support body 41. The two limiting parts 42 are respectively located on both sides of the second connecting part 522 along the third direction ZZ. The third direction ZZ, the second direction YY, and the first direction XX are perpendicular to each other. The two limiting parts 42 define a limiting groove 44 that restricts the movement of the second connecting part 522 along the third direction ZZ. The connecting post 43 is located in the limiting groove 44 and is located on the side of the second connecting part 522 away from the operation port 14. The connecting post 43 is provided with a second connecting hole 431 opposite to the position of the first connecting hole 523. The fastener 51 is then inserted into the second connecting hole 431 to fix the second connecting part 522 of the two electrical connectors 52 to the support 40. When the chassis 10 is a cuboid, the second direction YY can be the length direction of the chassis 10, and the third direction ZZ can be the width direction of the chassis 10.

[0045] Understandably, the connecting post 43 can provide support for the second connecting part 522 and limit it along the first direction XX, while the limiting part 42 can provide limit it along the third direction ZZ. This makes the alignment of the first connecting hole 523 and the second connecting hole 431 more convenient and accurate, and makes it easier and smoother for the fastener 51 to pass through the first connecting hole 523 and the second connecting hole 431. It can also prevent the second limiting part 42 from moving along the third direction ZZ when the fastener 51 connects the second connecting part 522 and the connecting post 43, making the connection process between the second connecting part 522 and the connecting post 43 more convenient.

[0046] Furthermore, the support member 40 also includes two support portions 45, which are located on both sides of the connecting post 43 along the second direction YY. The support portions 45 are located on the side of the second connecting portion 522 away from the operating port 14. The second connecting portion 522 contacts the support portion 45 to provide support for the second connecting portion 522 through the support portion 45, preventing the second connecting portion 522 from easily bending and deforming during its length process in the second direction YY, which would cause the first connecting hole 523 and the second connecting hole 431 to misalign.

[0047] Furthermore, the side of the connecting post 43 facing the second connecting part 522 and the side of the support part 45 facing the second connecting part 522 are on the same plane, so that the side of the connecting post 43 facing the second connecting part 522 and the side of the support part 45 facing the second connecting part 522 are flush, preventing the second connecting part 522 from bending and deforming due to the height difference between the connecting post 43 and the support part 45.

[0048] In some embodiments, the support member 40 may further include a first reinforcing structure 47, which connects at least two of the support column, the limiting part 42, and the support part 45 to improve the structural strength of the support column, the limiting part 42, and the support part 45 and prevent the support column, the limiting part 42, and the support part 45 from bending.

[0049] In some embodiments, a second reinforcing structure 48 may be connected to the support body 41. The second reinforcing structure 48 can improve the structural strength of the support body 41 and prevent the support body 41 from bending.

[0050] See also Figure 2 , Figure 3 and Figure 7 As shown, in some embodiments of this application, the energy storage device further includes a protective frame 60, which is installed in the receiving cavity 13 and connected to the chassis 10. The protective frame 60 can be connected to at least one of the first housing 11 and the second housing 12. The protective frame 60 has a mounting channel 61 located between the operating port 14 and the first connection hole 523. The mounting channel 61 is used to provide a moving channel for the fastener 51 to move between the operating port 14 and the first connection hole 523. It should be noted that when installing the fastener 51, after the fastener 51 enters the receiving cavity 13 through the operating port 14, it can move along the moving channel to the first connecting hole 523; when removing the fastener 51, the fastener 51 can also move along the moving channel from the first connecting hole 523 to the operating port 14, and then be removed from the receiving cavity 13 through the operating port 14. During the movement of the fastener 51 in the receiving cavity 13, the protective frame 60 can separate the fastener 51 from electronic components such as the electronic control component 30 to prevent the fastener 51 from colliding with the electronic components and causing damage or short circuit to the electronic components.

[0051] In some embodiments, the energy storage device further includes a fan 70, which is mounted on a protective frame 60. The fan 70 can generate airflow within the housing cavity 13, thereby improving the heat dissipation effect of electronic components such as the battery cell assembly 20 and the electronic control assembly 30. The protective frame 60 provides a mounting position for the fan 70, thus securing the fan 70 without the need for an additional mounting bracket, which can reduce the production cost of the energy storage device. In addition, the fan 70 can be installed on the protective frame 60 outside the housing cavity 13 first, and then the protective frame 60 can be installed and secured inside the housing cavity 13 to achieve the installation and fixation of the fan 70, making the assembly of the energy storage device more convenient.

[0052] Furthermore, the support member 40 has a recessed groove 46 on the side facing the protective frame 60. The protective frame 60 includes an insertion part 62 that is inserted into the recessed groove 46. The fan 70 is installed in the insertion part 62. The insertion part 62 has a larger area than other parts of the protective frame 60, which can provide more installation space for the fan 70, making the installation of the fan 70 more convenient.

[0053] In some embodiments, a third reinforcing structure 63 may be connected to the insertion part 62. The third reinforcing structure 63 can improve the structural strength of the insertion part 62 and prevent the insertion part 62 from bending.

[0054] See also Figure 1 and Figure 3 As shown, in some embodiments, the energy storage device further includes a sealing cover 80. The sealing cover 80 is located outside the receiving cavity 13 and covers the operating port 14. The sealing cover 80 is used to open and close the operating port 14 to prevent water or dirt from entering the receiving cavity 13 through the operating port 14. It is understood that the sealing cover 80 can be detachably connected to the housing 10 by means of snap-fit, magnetic connection, or threaded connection, or the sealing cover 80 can be movably connected to the housing 10 by means of rotational connection or sliding connection. Specifically, when the operating port 14 is located in the first housing 11, the sealing cover 80 is located in the first housing 11 and can move relative to the first housing 11 to open and close the operating port 14; when the operating port 14 is located in the second housing 12, the sealing cover 80 is located in the second housing 12 and can move relative to the second housing 12 to open and close the operating port 14.

[0055] The chassis 10 has a sealing groove 15 on the side facing the sealing cover 80. In some embodiments, a sealing element 90 is provided in the sealing groove 15 surrounding the operation port 14. The sealing cover 80 contacts the sealing element 90 to close the operation port 14, thereby achieving a seal between the sealing cover 80 and the chassis 10, thereby improving the sealing performance at the operation port 14 and preventing water or dirt from entering the receiving cavity 13 through the operation port 14.

[0056] In other embodiments, the sealing groove 15 may also be formed by a seal 90 surrounding the operating port 14, thus eliminating the need for additional grooving work on the sealing cover 80.

[0057] In some embodiments, the battery cell assembly 20 has a first positive electrode and a first negative electrode, the electronic control assembly 30 has a second positive electrode and a second negative electrode, and the connection assembly 50 is provided in two sets. The first positive electrode is electrically connected to the second positive electrode through one set of connection assemblies 50, and the first negative electrode is electrically connected to the second negative electrode through the other set of connection assemblies 50, so that the first positive electrode and the first negative electrode of the battery cell assembly 20 are electrically connected to the electronic control assembly 30 through the two sets of connection assemblies 50 respectively.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An energy storage device, characterized in that, include: The chassis includes a first housing and a second housing connected to the first housing. The second housing and the first housing enclose a receiving cavity. The receiving cavity includes a first cavity near the first housing and a second cavity near the second housing. The chassis is provided with an operating port communicating with the receiving cavity. The battery cell assembly is installed in the first cavity; The electronic control components are installed in the second cavity; A support member is installed within the receiving cavity and is connected to the chassis; A connecting assembly is installed within the receiving cavity. The connecting assembly includes a fastener and two electrical connectors. Each electrical connector includes a first connecting portion and a second connecting portion connected to the first connecting portion. The first connecting portions of the two electrical connectors are respectively connected to the battery cell assembly and the electronic control assembly. The operating port, the second connecting portions of the two electrical connectors, and the support member are arranged sequentially along a first direction. The second connecting portion has a first connecting hole extending along the first direction. The first connecting hole is positioned opposite to the operating port, so that after the fastener enters the receiving cavity through the operating port, the fastener can pass through the first connecting holes of the two second connecting portions and connect to the support member to fix the second connecting portions of the two electrical connectors to the support member, thereby electrically connecting the battery cell assembly and the electronic control assembly.

2. The energy storage device according to claim 1, characterized in that, The support member and the second connecting part are both located on the side of the cell assembly facing the electronic control assembly, and the projection of the electronic control assembly on the cell assembly and the projection of the second connecting part on the cell assembly are spaced apart.

3. The energy storage device according to claim 2, characterized in that, The first housing and the second housing are arranged along the first direction, and the operating port is opened in the second housing and located on the side of the support member away from the cell assembly; or, The arrangement direction of the first housing and the second housing is perpendicular to the first direction, and the operating port is opened in the first housing or the second housing.

4. The energy storage device according to claim 1, characterized in that, The second connecting portion extends along a second direction, and the support member includes: The supporting body is connected to the chassis; Two limiting portions are disposed on the side of the support body facing the second connecting portion and connected to the support body. The two limiting portions are respectively located on both sides of the second connecting portion along a third direction. The third direction, the second direction, and the first direction are perpendicular to each other. The two limiting portions define limiting grooves that restrict the movement of the second connecting portion along the third direction; and, A connecting post is located within the limiting groove and on the side of the second connecting portion away from the operating port. The connecting post is provided with a second connecting hole opposite to the position of the first connecting hole. The fastener is then inserted into the second connecting hole to fix the second connecting portions of the two electrical connectors to the support member.

5. The energy storage device according to claim 4, characterized in that, The support member also includes: Two support portions are located on opposite sides of the connecting column along the second direction, and the support portions are located on the side of the second connecting portion away from the operating port, and the second connecting portion is in contact with the support portions.

6. The energy storage device according to claim 5, characterized in that, The side of the connecting column facing the second connecting part and the side of the supporting part facing the second connecting part are located on the same plane.

7. The energy storage device according to claim 1, characterized in that, The energy storage device also includes: A protective frame is installed within the receiving cavity and connected to the chassis. The protective frame has a mounting channel located between the operating port and the first connecting hole, the mounting channel being used to provide a movement channel for the fastener to move between the operating port and the first connecting hole.

8. The energy storage device according to claim 7, characterized in that, The energy storage device also includes: A fan is mounted on the protective frame. The support member has a recessed groove on the side facing the protective frame. The protective frame includes an insertion part that is inserted into the recessed groove, and the fan is mounted on the insertion part.

9. The energy storage device according to claim 1, characterized in that, The energy storage device also includes: A sealing cap is located outside the receiving cavity and covers the operating port. The sealing cap is used to open and close the operating port.

10. The energy storage device according to claim 9, characterized in that, The chassis has a sealing groove on the side facing the sealing cover. A sealing element is provided in the sealing groove and surrounds the operation port. Alternatively, the sealing groove is formed by the sealing element surrounding the operation port. The sealing cover contacts the sealing element to close the operation port.

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