Battery cell holder and battery module

Abstract

The application provides an electric core support and a battery module, and relates to the technical field of batteries. The electric core support comprises a base and a top cover. The base is provided with a mounting groove and a first inner cavity for accommodating a heat exchange medium. The top cover covers the mounting groove. The top cover is provided with a second inner cavity for accommodating the heat exchange medium. The second inner cavity is in communication with the first inner cavity. A gap for placing a CCS assembly is arranged between the base and the top cover. A flow channel opening is arranged on the base and / or the top cover. The flow channel opening is in communication with the first inner cavity, the second inner cavity and the outside. In the application, various electronic devices requiring heat dissipation are arranged between the base and the top cover. The electronic devices can share a set of temperature management components, thereby improving the integration of the temperature management system of the battery module. The number of components required for temperature management can be reduced, the structure of the temperature management components can be simplified, and the assembly efficiency of the temperature management components can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery cell support and a battery module. BACKGROUND

[0002] In related technologies, a power battery transmits heat exchange medium to a heat management component at the end of a battery module through a pipeline to perform heat exchange on a battery cell and a CCS (Cells Contact System, battery module collection and integration component) assembly, thereby completing temperature management of the battery cell and the CCS assembly, so that the battery cell and the CCS assembly are within a normal working temperature. Meanwhile, a bottom heat exchange mode is used for temperature management of a BDU (Battery energy Distribution Unit, energy distribution unit) module and a BMS (Battery Management System, battery management system) board. This makes the temperature management components of the battery distributed in a scattered manner, with low integration and many parts, thereby leading to a complex temperature management structure of the battery and low assembly efficiency. SUMMARY

[0003] Embodiments of the present application provide a battery cell support and a battery module, which can simplify the structure of the temperature management components and improve the assembly efficiency of the temperature management components.

[0004] In a first aspect, embodiments of the present application provide a battery cell support, which includes a base and a top cover. The base is provided with a mounting groove and a first inner cavity for accommodating heat exchange medium. The mounting groove includes a battery cell mounting groove, a BMS mounting groove, and a BDU mounting groove. The heat exchange medium is configured to exchange heat with components located in the mounting groove. The top cover covers the mounting groove. The top cover is provided with a second inner cavity for accommodating heat exchange medium. The second inner cavity is in communication with the first inner cavity. The base and the top cover have a gap for placing a CCS assembly between them. The base and / or the top cover is provided with a flow channel opening for communicating the second inner cavity and the first inner cavity with the outside.

[0005] In an embodiment, the base and the top cover are metal pieces. The battery cell support further includes an insulating sheet and a first insulating support for supporting the CCS assembly. The first insulating support is arranged between the base and the top cover. The insulating sheet is arranged between the first insulating support and the top cover.

[0006] In an embodiment, the battery cell support further includes a second insulating support. A first side of the second insulating support is connected to a side of the first insulating support away from the insulating sheet. A second side of the second insulating support opposite to the first side is provided with a BMS card slot, and the second side is inserted into the BMS mounting groove.

[0007] In an embodiment, the base is provided with a stepped groove near one side of the BMS installation groove, the stepped groove is communicated with the BMS installation groove, and the side wall of the second insulating support is provided with a clamping plate near one side of the BMS card groove.

[0008] In an embodiment, one end of the clamping plate away from the first insulating support is provided with a clamping hole.

[0009] In an embodiment, the base comprises a bottom plate, a plurality of first columns and a plurality of second columns protruding from the bottom plate, the plurality of first columns and the plurality of second columns define an installation groove with the bottom plate, the first inner cavity comprises a first sub-inner cavity provided on the bottom plate, a second sub-inner cavity provided on the first column, and a third sub-inner cavity provided on the second column, one end of the second sub-inner cavity and one end of the third sub-inner cavity are communicated with the first sub-inner cavity, and the other end of the third sub-inner cavity is communicated with the second inner cavity.

[0010] In an embodiment, one end of the second column away from the bottom plate is provided with a connecting ring, the first insulating support and the insulating sheet are respectively provided with a first perforation and a second perforation, one end of the connecting ring away from the second column passes through the first perforation and the second perforation in sequence and is sealingly connected with the top cover, and the third sub-inner cavity is communicated with the second inner cavity through the inner hole of the connecting ring.

[0011] In an embodiment, one side of the top cover facing the bottom plate is provided with a first insertion ring, one end of the first insertion ring away from the top cover is inserted into the inner hole of the connecting ring, and the inner holes of the first insertion ring are communicated with the second inner cavity and the inner hole of the connecting ring at both ends; wherein the outer circumferential surface of the first insertion ring is sealingly matched with the hole wall of the inner hole of the connecting ring.

[0012] In an embodiment, a first annular groove is provided on the top cover around the first insertion ring; one end of the connecting ring away from the second column is provided with a second insertion ring, the second insertion ring is sleeved on the first insertion ring, one end of the second insertion ring away from the connecting ring is inserted into the first annular groove, and the second insertion ring is sealingly matched with the first annular groove.

[0013] In an embodiment, one side of the top cover facing the bottom plate is provided with a matching hole, and one end of the connecting ring away from the second column is inserted into the matching hole.

[0014] In an embodiment, the cross section of the connecting ring is a polygon, and the shape of the cross section of the first perforation and the shape of the cross section of the second perforation are consistent with the shape of the cross section of the connecting ring.

[0015] In an embodiment, the insulating sheet is provided with a matching ring near one side of the first insulating support, one end of the matching ring is connected with the insulating sheet, and the other end is located in the annular space between the first perforation and the connecting ring. In an embodiment, the top cover is provided with an air inlet and an air outlet.

[0016] In an embodiment, the base is provided with a support column, and the top cover is detachably connected with the support column.

[0017] In an embodiment, the plurality of cell mounting grooves are divided into two groups, the BMS mounting groove is located between the two groups of cell mounting grooves, and the BDU mounting groove is located at one end of the BMS mounting groove and adjacent to the two groups of cell mounting grooves.

[0018] In an embodiment, a communication groove is arranged between two adjacent cell mounting grooves.

[0019] In a second aspect, the embodiments of the present application also provide a battery module, which comprises a cell, a CCS assembly, a BMS board, a BDU module, and the cell support described above, the cell mounting groove and the cell are both provided in plurality, and the plurality of cells are arranged one by one corresponding to the plurality of cell mounting grooves; the CCS assembly is arranged between the base and the top cover, and the CCS assembly comprises a first output pole and a busbar electrically connected with the cell; the BMS board is arranged in the BMS mounting groove, and the BMS board has a voltage acquisition end and a second output pole, the voltage acquisition end is electrically connected with the CCS assembly, and the voltage acquisition end electrically connected with the first output pole is electrically connected with the second output pole; the BDU module is arranged in the BDU mounting groove, and the BDU module is electrically connected with the second output pole.

[0020] In an embodiment, the BDU module comprises a shell, a first input pole, a third output pole, a first high-voltage protection cover, a second high-voltage protection cover, and an energy distribution unit. The shell is provided with a receiving cavity, an input groove, and an output groove, the input groove is located on the side of the shell away from the BMS board, and the output groove is located on the side of the shell close to the top cover; the first input pole is arranged in the input groove; the third output pole is arranged in the output groove; the first high-voltage protection cover covers the input groove; the second high-voltage protection cover covers the output groove; the energy distribution unit is arranged in the receiving cavity, and the energy distribution unit electrically connects the first input pole with the third output pole; wherein, the first input pole is electrically connected with the second output pole.

[0021] In an embodiment, the third output pole comprises a third positive output pole and a third negative output pole, and an insulating partition plate is arranged between the third positive output pole and the third negative output pole, and the insulating partition plate is connected with the shell.

[0022] The embodiments of the present application have the following beneficial effects:

[0023] In the embodiments of the present application, by arranging the various electronic devices needing heat dissipation between the base and the top cover, these electronic devices can share a set of temperature management components, thereby improving the integration of the temperature management system of the battery module, and further reducing the number of components required for temperature management, finally simplifying the structure of the temperature management components and improving the assembly efficiency of the temperature management components. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0025] Figure 1 is a structural schematic diagram of an electric core support provided by an embodiment of the present application;

[0026] Figure 2 is an exploded view of the electric core support provided by an embodiment of the present application;

[0027] Figure 3 is an exploded view of another electric core support provided by an embodiment of the present application;

[0028] Figure 4 is a structural schematic diagram of a connection structure of a first insulation support and a second insulation support provided by an embodiment of the present application;

[0029] Figure 5 is an enlarged view of A in FIG. Figure 3

[0030] Figure 6 is a schematic diagram of a cooperation of a second insulation support and a base provided by an embodiment of the present application;

[0031] Figure 7 is an enlarged view of B in FIG. Figure 6

[0032] Figure 8 is a structural schematic diagram of a base provided by an embodiment of the present application;

[0033] Figure 9 is a top view of the electric core support provided by an embodiment of the present application;

[0034] Figure 10 is a sectional view of C-C in FIG. Figure 9

[0035] Figure 11 is an enlarged view of D in FIG. Figure 10

[0036] is a longitudinal sectional structural schematic diagram of a first column provided by an embodiment of the present application; Figure 12

[0037] is an exploded view of a battery module provided by an embodiment of the present application; Figure 13

[0038] is a structural schematic diagram of a BDU module provided by an embodiment of the present application; Figure 14 ​​​​

[0039] Figure 15 is an exploded view of the BDU module provided by an embodiment of the present application.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 001 - battery cell support;

[0042] 011 - base; 111 - battery cell mounting groove; 112 - BMS mounting groove; 113 - BDU mounting groove; 114 - first inner cavity; 115 - step groove; 116 - bottom plate; 1161 - first sub-inner cavity; 117 - first column; 1171 - second sub-inner cavity; 1172 - second insertion ring; 118 - support column; 119 - communication groove; 120 - second column; 1201 - third sub-inner cavity; 1202 - connecting ring;

[0043] 012 - top cover; 121 - second inner cavity; 122 - first insertion ring; 1221 - first communication hole; 123 - first sealing ring; 124 - first annular groove; 125 - second sealing ring; 126 - bolt through hole; 127 - fitting hole;

[0044] 013 - first insulation support; 131 - sub-groove; 132 first through hole; 133 - second through hole; 134 - first through hole;

[0045] 014 - second insulation support; 141 - BMS card slot; 142 - clamping plate; 1421 - clamping hole;

[0046] 015 - insulation sheet; 151 - second through hole; 152 - fitting ring; 016 - liquid inlet; 017 - liquid outlet; 018 - gas inlet; 019 - gas outlet;

[0047] 002 - CCS assembly; 021 - first output pole; 022 - busbar;

[0048] 003 - BDU module; 031 - first input pole; 311 - socket; 032 - shell; 321 - input groove; 322 - output groove; 323 - insulation partition; 034 - first high-voltage protection cover; 035 - second high-voltage protection cover; 036 - third output pole;

[0049] 004 - BMS board; 041 - voltage acquisition end; 042 - second output pole;

[0050] 005 - battery cell. DETAILED DESCRIPTION

[0051] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0052] In addition, it should be understood that the specific implementations described herein are merely given as an example and are not to be used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0053] The terms "first", "second", "third", etc. are only used for descriptive purpose and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0054] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] The terms "including", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0056] In the description of the embodiments of the present application, the word "example" or "for example" is used to mean "an example of" or "for example". Any embodiment or design solution described as "example" or "for example" in the embodiments of the present application is not interpreted as being more preferred or having more advantages than another embodiment or design solution. The word "example" or "for example" is intended to present the relative concept in a clear manner.

[0057] Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a battery cell support 001 provided by an embodiment of the present application, Figure 2 is an exploded view of the battery cell support 001 provided by an embodiment of the present application. An embodiment of the present application provides a battery cell support 001, which comprises a base 011 and a top cover 012. The base 011 is provided with a mounting groove and a first inner cavity 114 for accommodating a heat exchange medium, the mounting groove comprises a battery cell mounting groove 111, a BMS mounting groove 112 and a BDU mounting groove 113, and the heat exchange medium is configured to exchange heat with components located in the mounting groove. The top cover 012 covers the mounting groove. The top cover 012 is provided with a second inner cavity 121 for accommodating the heat exchange medium. The second inner cavity 121 communicates with the first inner cavity 114. Wherein, there is a gap between the base 011 and the top cover 012 for placing a CCS assembly. The base 011 and / or the top cover 012 is provided with a flow passage opening. The flow passage opening is used to communicate the first inner cavity 114 and the second inner cavity 121 with the outside.

[0058] It can be understood that the battery cell mounting groove 111 is used to mount a battery cell, the BMS mounting groove 112 is used to mount a BMS board, and the BDU mounting groove 113 is used to mount a BDU module. When the battery cell is a cylindrical battery cell, the battery cell mounting groove 111 is a cylindrical groove. In order to further improve the temperature management efficiency of the battery cell, a heat-conducting adhesive can be applied between the battery cell and the battery cell mounting groove 111. The heat exchange medium in the first inner cavity 114 exchanges heat with electronic devices located in the mounting groove, and the heat exchange medium in the second inner cavity 121 exchanges heat with the CCS assembly. The first inner cavity 114 can communicate with the second inner cavity 121 through a pipeline arranged outside the support, or can communicate with the second inner cavity 121 through a pipeline arranged between the base 011 and the top cover 012.

[0059] In addition, the flow passage opening is at least two, one is a liquid inlet 016 for sending new heat exchange medium into the inner cavity, and the other is a liquid outlet 017 for discharging the heat exchange medium in the inner cavity. A plurality of flow passage openings can be arranged on the base 011, the first inner cavity 114 directly communicates with the outside through the flow passage opening, and the second inner cavity 121 communicates with the outside through the first inner cavity 114 and the flow passage opening in turn. A plurality of flow passage openings can also be arranged on the base 011 and the top cover 012.

[0060] Exemplarily, the heat exchange medium includes, but is not limited to, pure water, distilled water, heat-conducting liquid, etc. When the battery cell needs to be heated, the heat exchange medium can heat the battery cell; when the battery cell needs to be cooled, the heat exchange medium can cool the battery cell. The top cover 012 can be connected with the base 011 into one body through screws or connecting glue, etc. or can be bound with the base 011 into one body through a cable tie. A part of the first inner cavity 114 can be opposite to the bottom of each mounting groove, and another part can at least partially wrap the wall of each mounting groove.

[0061] The liquid inlet 016 is arranged on the top cover 012.

[0062] In the embodiment, by arranging the electronic devices needing heat dissipation between the base 011 and the top cover 012, the electronic devices can share a set of temperature management components, thereby improving the integration of the temperature management system of the battery module, and further reducing the number of components required for temperature management, and finally simplifying the structure of the temperature management components and improving the assembly efficiency of the temperature management components.

[0063] In addition, by integrating the electronic devices needing heat dissipation of the battery together, the compactness of the internal structure of the battery can be improved, thereby facilitating the miniaturization of the battery and controlling the manufacturing cost of the battery.

[0064] Further, the base 011 has the functions of supporting the battery cell and adjusting the temperature of the battery cell, thereby integrating the battery cell tray and the components for heat dissipation of the battery cell, and further reducing the components. The fewer the components, the lower the equipment failure rate caused by component aging defects, etc. Therefore, the reliability of the temperature management system can be improved.

[0065] Please refer to Figure 3 , Figure 3 is an exploded view of another battery cell support 001 provided by the embodiment of the application. In an embodiment, the base 011 and the top cover 012 are metal pieces. The battery cell support 001 further includes an insulating sheet 015 and a first insulating support 013 for supporting the CCS assembly. The first insulating support 013 is arranged between the base 011 and the top cover 012. The insulating sheet 015 is arranged between the first insulating support 013 and the top cover 012.

[0066] It can be understood that arranging the base 011 and the top cover 012 as metal pieces can improve their strength, thereby making the support of the battery cell support 001 to the battery cell more stable and reliable. After arranging the base 011 and the top cover 012 as metal pieces, in order to avoid the CCS assembly from being in contact and short-circuiting, insulating pieces need to be arranged on both sides of the CCS assembly to insulate and isolate the CCS assembly from the battery cell support 001. In order to further improve the stability of current transmission, an insulating layer, an insulating rubber sleeve, etc. can be arranged on the outer periphery of the battery cell to insulate and isolate the outer periphery of the battery cell from the base 011.

[0067] Correspondingly, when the first inner cavity 114 is communicated with the second inner cavity 121 through the pipeline arranged between the base 011 and the top cover 012, the insulating sheet 015 and the first insulating support 013 are correspondingly provided with through holes for the pipeline to pass through.

[0068] In the embodiment, through the above arrangement, the strength of the battery cell support 001 can be increased, so that the stability and reliability of the support of the battery cell support 001 to the battery cell can be improved, and the short circuit caused by the contact between the CCS assembly and the battery cell support 001 can be avoided, so that the stability of the electrical connection inside the battery can be ensured.

[0069] Please refer to Figure 4 , Figure 4 is a schematic view of a connection structure of the first insulating support 013 and the second insulating support 014 provided by the embodiment of the present application. In an embodiment, the battery cell support 001 further comprises a second insulating support 014. The first side of the second insulating support 014 is connected to the side of the first insulating support 013 away from the insulating sheet 015, and the second side of the second insulating support 014 opposite to the first side is provided with a BMS card slot 141, and the second side is inserted into the BMS mounting slot 112.

[0070] It can be understood that the slot of the BMS card slot 141 is opposite to the slot bottom of the BMS mounting slot 112. The BMS board is mounted in the BMS card slot 141. The collection end of the BMS board is electrically connected with the CCS assembly, so that the voltage and other information of the battery can be collected.

[0071] For example, the second insulating support 014 is clamped in the BMS mounting slot 112. The first insulating support 013 and the second insulating support 014 are integrally formed, specifically, injection molded.

[0072] In the embodiment, by connecting the first insulating support 013 for supporting the CCS assembly and the second insulating support 014 for mounting the BMS board into one, the CCS assembly and the BMS board can be positioned based on the integrally connected insulating support, so that the position accuracy between the BMS board and the CCS assembly can be improved, and the convenience of assembly and the stability of electrical connection between the BMS board and the CCS assembly can be improved.

[0073] Please refer to Figures 5 to 7 , in an embodiment, the base 011 is provided with a stepped groove 115 near the side of the BMS mounting slot 112, and the stepped groove 115 is communicated with the BMS mounting slot 112, as shown in Figure 5 , Figure 5 is Figure 3 is an enlarged view of A in Figure 4The card plate 142 is matched with the stepped groove 115, as shown in Figure 6 and Figure 7 as shown, Figure 6 is a schematic view of the cooperation between the second insulation support 014 and the base 011 provided by the embodiments of the present application, Figure 7 is Figure 6 an enlarged view of B in FIG. 14.

[0074] It can be understood that the two groove ends of the BMS installation groove 112 are provided with notches, so that the BMS plate can be electrically connected with the BDU module through one notch and electrically connected with other control systems through the other notch.

[0075] Exemplarily, the second insulation support 014 is provided with a stepped groove 115 communicated with the BMS installation groove 112 at the two groove ends of the BMS installation groove 112. The two ends of the side wall of the second insulation support 014 are provided with card plates 142. The two card plates 142 are matched with the two stepped grooves 115 respectively.

[0076] In the embodiments, by providing the stepped groove 115 and the card plate 142 matched with the stepped groove 115, the position accuracy of the second insulation support 014 relative to the base 011 can be improved, and then the position accuracy of the CCS assembly on the first insulation support 013 relative to the battery cell on the base 011 can be improved. Thus, the operability of the electrical connection between the CCS assembly and the battery cell is improved, and the stability of the electrical connection between the CCS assembly and the battery cell can be improved.

[0077] Please refer to Figure 4 and Figure 5 In an embodiment, the end of the card plate away from the first insulation support is provided with a clamping hole.

[0078] It can be understood that the end of the shell of the BMS plate towards the clamping hole is provided with a positioning platform matched with the clamping hole. Thus, the position accuracy of the BMS plate installed in the BMS card groove relative to the battery cell support can be further improved through the clamping hole, so as to facilitate the electrical connection between the BMS plate and other electrical components.

[0079] Please refer to Figure 4In an embodiment, the first insulating support 013 is provided with a plurality of sub-slots 131 on the side facing away from the second insulating support 014, and the plurality of sub-slots 131 are sequentially arranged along a first direction. In the second direction, the two ends of the sub-slots 131 are symmetrical to each other. The first direction is the length direction of the arrangement of the plurality of battery cells, and the second direction is perpendicular to the first direction and the axis of the battery cell. The bottom of the sub-slot 131 is provided with a first through hole 132, a second through hole 133, and a first through hole 134. The first through hole 132 is arranged opposite to the collection end of the BMS board. The second through hole 133 is arranged opposite to the electrode of the battery cell. The first through hole 134 is used to pass the pipeline connecting the first inner cavity 114 and the second inner cavity 121. The first through hole 132 is arranged at the center of symmetry of the sub-slot 131, and the second support is arranged opposite to the center of symmetry of the sub-slot 131.

[0080] It can be understood that the CCS assembly includes a first output pole and a plurality of busbars 022, which correspond one-to-one to the plurality of sub-slots 131 and are installed in the corresponding sub-slots 131. The first output pole and the plurality of busbars 022 can be embedded in the corresponding sub-slots 131, or can be further bonded in the corresponding sub-slots 131 by glue.

[0081] In this embodiment, by arranging the sub-slots 131, the first output pole and the busbars 022 of the CCS assembly can be respectively located in a sub-slot 131, so that the first output pole and the busbars 022 are respectively installed and positioned based on the plurality of sub-slots 131, thereby further improving the positional accuracy of the CCS assembly, and making the electrical connection structure between the CCS assembly and the battery cell more stable and reliable.

[0082] In addition, by arranging the sub-slots 131 in a symmetrical structure, the load of the first insulating support 013 can be balanced, so that the gravity of the CCS assembly acting on the first insulating support 013 is more evenly distributed, thereby reducing the condition of unilateral overload or uneven force on both sides of the first insulating support 013, and further improving the stability and carrying capacity of the first insulating support 013.

[0083] Correspondingly, the first insulating support 013, the second insulating support 014, the first output pole, and the busbars 022 are respectively symmetrical along the center of the sub-slot 131.

[0084] Please refer to Figure 8 , Figure 8is a structural schematic diagram of the base 011 provided by an embodiment of the present application. In an embodiment, the base 011 includes a bottom plate 116 and a plurality of first columns 117 and a plurality of second columns 120 protruding from the bottom plate 116, the plurality of first columns 117 and the plurality of second columns 120 defining a mounting slot with the bottom plate 116. The first inner cavity 114 includes a first sub-inner cavity 1161 disposed on the bottom plate 116, a second sub-inner cavity 1171 disposed on the first column 117, and a third sub-inner cavity 1201 disposed on the second column 120, one end of the second sub-inner cavity 1171 and one end of the third sub-inner cavity 1201 being in communication with the first sub-inner cavity 1161, and the other end of the third sub-inner cavity 1201 being in communication with the second inner cavity 121.

[0085] It can be understood that the bottom plate 116 forms a slot bottom of the mounting slot, and the first column 117 and the second column 120 form a slot wall of the mounting slot. The second columns 120 are multiple and divided into two groups, the second columns 120 in each group are arranged in sequence and uniformly spaced apart along a first direction, and two adjacent second columns 120 along the first direction are connected as one, as shown in Figure 9 Figure 9 is a top view of the base 011 provided by an embodiment of the present application. The gap between the two groups of second columns 120 is a BMS mounting slot. Each second column 120 is provided with a third sub-inner cavity 1201, and at least part of the third sub-inner cavity 1201 away from one end of the first sub-inner cavity 1161 is in communication with the second inner cavity 121, as shown in Figure 10 Figure 10 is Figure 9 a sectional view of C-C in Figure 12 Figure 12 is a longitudinal sectional structural schematic diagram of the first column 117 provided by an embodiment of the present application.

[0086] ​​​Wherein, when the battery is managed in temperature, the heat exchange medium in the inner cavity exchanges heat with the electronic device. When the temperature of the heat exchange medium in the inner cavity reaches a first preset value, or after a certain time, the liquid outlet 017 is opened. At this time, the liquid inlet 016 is closed. The heat exchange medium in the inner cavity is discharged through the liquid outlet 017 by means of a hydraulic pump or the like, and flows into the temperature management module. The temperature management module manages the temperature of the heat exchange medium, so that the temperature of the heat exchange medium reaches a second preset value, for example, when the second preset value is 50℃, the heat exchange medium is heated to 50℃; when the second preset value is 3℃, the heat exchange medium is cooled to 3℃. When the heat exchange medium in the inner cavity is discharged, the liquid inlet 016 is opened. At this time, the liquid outlet 017 is closed. The new heat exchange medium flows into the inner cavity from the liquid inlet 016. When the heat exchange medium fills the inner cavity, the temperature of the heat exchange medium in the inner cavity can reach the first preset value, or after a certain time, the foregoing steps can be repeated to discharge the heat exchange medium and fill the new heat exchange medium, so as to continuously manage the temperature of the battery.

[0087] In the embodiment, by setting the first inner cavity 114 to the above structure, on the one hand, the transmission path of the heat exchange medium can be shortened, so that the circulation speed of the heat exchange medium can be accelerated, and then the temperature management period can be shortened, so as to provide efficient cooling effect for the battery in a shorter time, and finally the temperature management efficiency can be improved; on the other hand, the second sub-inner cavity 1171 is the end of the transmission path of the heat management medium, and these second sub-inner cavities 1171 can be filled synchronously, so that the transmission path of the heat exchange medium can be shortened, so as to reduce the time of filling the second cavity with the heat exchange medium, and then the temperature management effect of the battery at the end of the transmission path of the heat exchange medium can be improved, so that the temperature management of each battery is more uniform and efficient.

[0088] In addition, the heat management process of the battery in the embodiment is the reciprocating cycle of filling and emptying the inner cavity, rather than the continuous flow cycle of the heat exchange medium. Wherein, the end of the second sub-inner cavity 1171 and the third sub-inner cavity 1201 connected with the first sub-inner cavity 1161 can be used as the liquid inlet end of the second sub-inner cavity 1171 and the third sub-inner cavity 1201, and also can be used as the liquid outlet end of the second sub-inner cavity 1171 and the third sub-inner cavity 1201, so that it is not necessary to configure a partition wall inside the second sub-inner cavity 1171 and the third sub-inner cavity 1201 to make the flow direction of the heat exchange medium inside the second sub-inner cavity 1171 and the third sub-inner cavity 1201 unique, and then the structure of the inner cavity can be simplified. Therefore, the manufacturing process of the battery holder 001 is simpler, which is beneficial to the manufacturing cost. Moreover, the bottom plate 116 can be integrally formed with the first column 117 and the second column 120, so that the heat exchange medium can be prevented from leaking from the connection between the first column 117 and the second column 120 and the bottom plate 116, and then the working stability can be improved, and the maintenance frequency can be reduced.

[0089] Please refer to Figure 3 、 Figure 10 and Figure 11 , Figure 11 is Figure 10 at D in FIG. 1. In an embodiment, the second column 120 is provided with a connecting ring 1202 at one end away from the bottom plate 116. The first insulating support 013 and the insulating sheet 015 are respectively provided with a first through hole 134 and a second through hole 151. The connecting ring 1202 is sealingly connected to the top cover 012 after passing through the first through hole 134 and the second through hole 151 in sequence away from the second column 120. The third sub-internal cavity 1201 is in communication with the second internal cavity 121 through the inner hole of the connecting ring 1202.

[0090] For example, the cross section of the connecting ring 1202 is polygonal, and the shapes of the cross sections of the first through hole 134 and the second through hole 151 are consistent with the shape of the cross section of the connecting ring 1202. For example, the connecting ring 1202 is a triangular ring, the cross section of which is a triangle, and the three edges of which are all rounded. The first through hole 134 and the second through hole 151 are both in clearance fit with the connecting ring 1202.

[0091] In this embodiment, by passing the second column 120 through the first insulating support 013 and the insulating sheet 015, the first insulating support 013 and the insulating sheet 015 can be prevented from rotating, so as to improve the position stability of the first insulating support 013 and the insulating sheet 015 relative to the second column 120, and further improve the structural stability of the battery cell support 001.

[0092] Please refer to Figure 10 and Figure 11 , in an embodiment, the top cover 012 is provided with a first insertion ring 122 at one side facing the bottom plate 116. The first insertion ring 122 is inserted into the inner hole of the connecting ring 1202 at one end away from the top cover 012, and the inner holes of the first insertion ring 122 are in communication with the second internal cavity 121 and the inner hole of the connecting ring 1202 at both ends. Among them, the outer peripheral surface of the first insertion ring 122 is sealingly fitted with the hole wall of the inner hole of the connecting ring 1202.

[0093] For example, a first sealing ring 123 is arranged between the outer peripheral surface of the first insertion ring 122 and the cavity wall of the third sub-internal cavity 1201, and the first sealing ring 123 is radially compressed to realize the sealing fit between the two parts. The inner peripheral side of the first sealing ring 123 can be embedded on the outer peripheral surface of the first insertion ring 122. Among them, the first sealing ring 123 can be an O-shaped sealing ring.

[0094] In the embodiment, the first ring 122 is inserted into the inner hole of the connecting ring 1202, so that the top cover 012 can be positioned relative to the base 011 through the insertion structure, thereby improving the position accuracy of the top cover 012. The insertion structure can increase the resistance of the flow of the heat exchange medium, thereby improving the sealing of the connecting part between the top cover 012 and the second cylinder 120, and preventing the heat exchange medium from leaking from the connecting part.

[0095] Referring to Figure 10 and Figure 11 In an embodiment, the first annular groove 124 is arranged on the top cover 012 around the first ring 122. The end of the connecting ring 1202 away from the second cylinder 120 is provided with the second ring 1172, the second ring 1172 is sleeved on the first ring 122, the end of the second ring 1172 away from the connecting ring 1202 is inserted into the first annular groove 124, and the second ring 1172 is in sealing cooperation with the first annular groove 124.

[0096] In the embodiment, the first annular groove 124 and the second ring 1172 are arranged, so that the top cover 012 is further positioned through the cooperation of the first annular groove 124 and the second ring 1172, thereby not only further improving the position accuracy of the top cover 012, but also improving the stability of the connection between the top cover 012 and the cylinder 117.

[0097] The outer circumferential surface of the second ring 1172 is in sealing cooperation with the outer side groove wall of the first annular groove 124.

[0098] For example, the second sealing ring 125 is arranged between the outer circumferential surface of the second ring 1172 and the outer side groove wall of the first annular groove 124, and the second sealing ring 125 is radially compressed to realize the sealing cooperation between the two parts. The second sealing ring 125 is a rectangular sealing ring. In this way, the outer circumferential surface of the second ring 1172 is in sealing cooperation with the outer side groove wall of the first annular groove 124, thereby improving the sealing of the connection between the top cover 012 and the cylinder 117, and preventing the heat exchange medium from leaking from the connecting part between the top cover 012 and the cylinder 117.

[0099] Referring to Figure 10 and Figure 11 In an embodiment, the side of the top cover 012 facing the bottom plate 116 is provided with a matching hole 127, and the end of the connecting ring 1202 away from the second cylinder 120 is inserted into the matching hole 127.

[0100] In the embodiment, the connecting ring 1202 is inserted into the top cover 012, the matching structure between the base 011 and the top cover 012 is increased, the matching precision between the base 011 and the top cover 012 is further improved, the misalignment of the connecting part between the second inner cavity 121 and the first inner cavity 114 is avoided, and finally the structural stability of the battery cell support 001 is improved.

[0101] Referring to Figure 10 and Figure 11 In an embodiment, the insulating sheet 015 is provided with a matching ring 152 near one side of the first insulating support 013. One end of the matching ring 152 is connected with the insulating sheet 015, and the other end is located in the annular space between the first through hole 134 and the connecting ring 1202.

[0102] In the embodiment, the matching ring 152 is arranged, the matching area between the insulating sheet 015, the connecting ring 1202 and the first insulating support 013 is increased, the insulating sheet 015 is prevented from shaking at will, and the position stability of the insulating sheet 015 is improved.

[0103] Referring to Figure 9 In an embodiment, the top cover 012 is provided with an air inlet 018 and an air outlet 019.

[0104] It can be understood that, in order to prevent the heat exchange medium from being discharged from the air outlet 019, a gas-selective permeation membrane is covered on the air inlet 018 and the air outlet 019, so that only gas can pass through the air inlet 018 and the air outlet 019.

[0105] When the heat exchange medium in the inner cavity is discharged, the air inlet 018 and the liquid outlet 017 are opened. At this time, the air outlet 019 and the liquid inlet 016 are closed. The heat exchange medium in the inner cavity is discharged through the liquid outlet 017 and flows into the temperature management module. At the same time, the air inlet 018 is filled with the space occupied by the reduced heat exchange medium in the inner cavity, so as to facilitate the rapid discharge of the heat exchange medium. When the heat exchange medium in the inner cavity is discharged and new heat exchange medium is input, the air outlet 019 and the liquid inlet 016 are opened, and the air inlet 018 and the liquid outlet 017 are closed. The new heat exchange medium flows into the inner cavity from the liquid inlet 016. At the same time, the air in the inner cavity is discharged from the air outlet 019, so as to facilitate the rapid filling of the inner cavity with the heat exchange medium.

[0106] In the embodiment, the air inlet 018 and the air outlet 019 are arranged, on the one hand, the negative pressure of the inner cavity is avoided when the liquid is discharged, the discharge of the heat exchange medium is facilitated, and the liquid discharge is more smooth; on the other hand, the air in the inner cavity is avoided when the liquid is input, the liquid input is not sufficient, the liquid input efficiency is guaranteed, and the temperature management efficiency is guaranteed.

[0107] In the above, regarding the bottom plate 116 being integrally formed with the first column 117 and the second column 120, the following scheme can be specifically adopted: the bottom plate 116 includes a cover plate and a box body with an opening, the cover plate covers the opening to seal and isolate the inner cavity of the box body from the outside. The first column 117 and the second column 120 are integrally connected to the side of the box body away from the cover plate. In this way, the first column 117, the second column 120 and the box body can be integrally stamped and formed, and then the cover plate is separately stamped or blanked and formed, and then the cover plate is welded to the opening.

[0108] Referring to Figure 1 In an embodiment, the base 011 is provided with support columns 118, and the top cover 012 is detachably connected with the support columns 118. Specifically, the top cover 012 is provided with bolt through holes 126, and the threaded end of the bolt passes through the bolt through hole 126 and is threadedly connected with the support column 118.

[0109] For example, the top cover 012 is provided with bolt through holes 126 at four corners thereof, and the bottom plate 116 is provided with support columns 118 at four corners thereof, and the bolt passes through the bolt through hole 126 and is threadedly connected with the support column 118, so as to detachably fix the top cover 012 on the bottom plate 116, thereby improving the positional stability of the top cover 012 and the stability of the communication between the second sub-cavity 1171 and the second cavity.

[0110] Referring to Figure 2 In an embodiment, the battery cell mounting grooves 111 are multiple, and the multiple battery cell mounting grooves 111 are divided into two groups, the BMS mounting groove 112 is located between the two groups of battery cell mounting grooves 111, and the BDU mounting groove 113 is located at one end of the BMS mounting groove 112 and adjacent to the two groups of battery cell mounting grooves 111.

[0111] In an embodiment, by limiting the relative positions of the three kinds of mounting grooves, the battery cell support 001 is a symmetrical structure, which can improve the arrangement neatness of the battery cells and other components, thereby improving the convenience of assembly and maintenance; on the other hand, it can balance the load of the base 011, so that the gravity of the base 011 from the battery cells and other components is more evenly distributed, thereby reducing the condition of unilateral overload or uneven force on both sides of the base 011, and improving the stability and carrying capacity of the base 011.

[0112] Referring to Figure 2 , Figure 3 and Figure 8 In an embodiment, a communication groove 119 is arranged between two adjacent battery cell mounting grooves 111.

[0113] It is understandable that, in order to improve the stability of the battery cell and prevent it from wobbling relative to the battery cell bracket 001, glue needs to be injected between the battery cell bracket 001 and the battery cell to connect the battery cell and the battery cell bracket 001 into one unit. Therefore, in order to improve the flowability of the glue and the uniformity of the injected glue, a connecting groove 119 is provided to connect two adjacent battery cell mounting grooves 111, so that the glue can flow through the connecting groove 119.

[0114] Furthermore, a connecting groove 119 can be provided between the BDU mounting groove 113 and the cell mounting groove 111 to further improve the uniformity of the glue injected into the cell bracket 001.

[0115] like Figure 13 As shown, Figure 13 This is an exploded view of a battery module provided in an embodiment of this application. Accordingly, an embodiment of this application also provides a battery module, which includes a battery cell 005, a CCS module 002, a BMS board 004, a BDU module 003, and the aforementioned battery cell support 001. There are multiple battery cell mounting slots 111 and multiple battery cells 005, and each of the multiple battery cells 005 corresponds to one of the multiple battery cell mounting slots 111. The CCS module 002 is disposed between the base 011 and the top cover 012. The CCS module 002 includes a first output terminal 021 electrically connected to the battery cell 005 and a busbar 022. The BMS board 004 is disposed in the BMS mounting slot 112. The BMS board 004 has a voltage acquisition terminal 041 and a second output terminal 042. The voltage acquisition terminal 041 is electrically connected to the CCS module 002, and the voltage acquisition terminal 041 electrically connected to the first output terminal 021 is electrically connected to the second output terminal 042. BDU module 003 is disposed in BDU mounting slot 113. BDU module 003 is electrically connected to the second output terminal 042. BDU module 003 has a third output terminal 036 and a first input terminal 031 electrically connected to the third output terminal 036. The second output terminal 042 is electrically connected to the first input terminal 031.

[0116] As can be understood, the input terminals include a positive input terminal and a negative input terminal, and the output terminals include a positive output terminal and a negative output terminal. The positive input terminal is electrically connected to the corresponding positive output terminal, and the negative input terminal is electrically connected to the corresponding negative output terminal. Electrical connections can be achieved through soldering, butt-fitting, or plugging.

[0117] In this configuration, the CCS component 002 is made of Al 1060-O material, and correspondingly, the first output electrode 021 and bus 022 are aluminum busbars. The second output electrode 042 and the first input electrode 031 are copper busbars.

[0118] In the embodiment, the first output pole 021 and the busbar 022 are arranged opposite to the plurality of voltage collection terminals 041, so that the first output pole 021 and the busbar 022 can be directly electrically connected with the voltage collection terminals 041 to transmit the voltage signal and can be connected with the BDU module 003 via the BMS board 004 to output the high-voltage current. In this way, on the one hand, the CCS assembly can use a set of first output poles 021 to realize the transmission of the voltage signal and the output of the high-voltage current, thereby reducing a set of first output poles 021, ultimately improving the material cost and the related installation process cost of the electrical connection of the battery module, and improving the installation efficiency. On the other hand, the jumper bar, the bolt, the wire harness, the connector and the related installation process can be omitted, thereby further reducing the material cost and the related installation process cost of the electrical connection, thereby improving the installation efficiency.

[0119] Referring to Figure 14 , Figure 14 is a structural schematic diagram of the BDU module 003 provided by the embodiment of the present application. In an embodiment, the first input pole 031 is plugged with the second output pole 042. Specifically, the first input pole 031 is provided with a socket 311 at one end close to the second output pole 042, and the second output pole 042 is inserted into the socket 311.

[0120] In the embodiment, by plugging the first input pole 031 with the second output pole 042, on the one hand, the BDU module 003 can be positioned relative to the BMS board 004 based on the plugging structure, thereby improving the position accuracy of the BDU module 003. On the other hand, the electrical connection structure between the first input pole 031 and the second output pole 042 is simple, easy to operate, and convenient for subsequent maintenance.

[0121] Correspondingly, in order to facilitate the smooth plugging of the first input pole 031 and the second output pole 042, the side of the BDU mounting groove 113 away from the BMS mounting groove 112 is an open end, so that the BDU module 003 can be moved from the open end to the BDU mounting groove 113, and then the first input pole 031 and the second output pole 042 are plugged.

[0122] The first input pole 031 is provided with a first bolt through hole 126, the second output pole 042 is provided with a second bolt through hole 126, and the BDU module 003 is provided with a nut. The threaded end of the bolt is sequentially threaded through one end of the first bolt through hole 126, the second bolt through hole 126 and the other end of the first bolt through hole 126, and then is threadedly connected with the nut, so as to fix the first input pole 031 and the second output pole 042 to each other, complete the high-voltage circuit connection, and further improve the electrical connection stability between the BDU module 003 and the BMS board 004.

[0123] Referring to Figure 15 ,Figure 15 is an exploded view of the BDU module 003 provided by an embodiment of the present application. In an embodiment, the BDU module 003 includes a housing 032, a first high-voltage protection cover 034, a second high-voltage protection cover 035, a first input pole 031, an energy distribution unit, and a third output pole 036. The housing 032 is provided with a receiving cavity, an input slot 321, and an output slot 322. The input slot 321 is located on a side of the housing 032 away from the BMS board. The output slot 322 is located on a side of the housing 032 close to the top cover 012. The first input pole 031 is arranged in the input slot 321, and the first high-voltage protection cover 034 covers the input slot 321 to insulate the first input pole 031 from the outside. The positive and negative poles of the first input pole 031 are arranged along the axial direction of the first through hole. The third output pole 036 is arranged in the output slot 322, and the second high-voltage protection cover 035 covers the output slot 322 to insulate the third output pole 036 from the outside. The positive pole of the third output pole 036 is electrically connected to the positive pole of the first input pole 031, and the negative pole of the third output pole 036 is electrically connected to the negative pole of the first input pole 031.

[0124] In addition, the third output pole 036 includes a third positive output pole and a third negative output pole. When the spacing between the third positive output pole and the third negative output pole is small, in order to improve the working stability of the BDU, an insulating partition plate 323 is arranged between the third positive output pole and the third negative output pole, and the insulating partition plate 323 is connected to the housing 032. In this way, by arranging the insulating partition plate 323 between the third positive output pole and the third negative output pole, the insulation between the third positive output pole and the third negative output pole can be improved, thereby improving the working stability of the BDU.

[0125] The above describes the embodiments of the present application in detail, and the specific examples are applied to explain the principles and implementation modes of the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. An electrode holder, characterized by, The application relates to a battery cell support, comprising: a base provided with installation grooves including cell installation grooves, BMS installation grooves and BDU installation grooves, and a first inner cavity for containing heat exchange medium configured to exchange heat with components in the installation grooves; a top cover covering the installation grooves and provided with a second inner cavity for containing heat exchange medium, the second inner cavity being in communication with the first inner cavity; wherein the base and the top cover have a gap for placing a CCS assembly, the base and / or the top cover are provided with flow channel openings for communicating the second inner cavity and the first inner cavity with the outside world; the base and the top cover are metal pieces, the battery cell support further comprises an insulating sheet and a first insulating support for supporting the CCS assembly, the first insulating support is arranged between the base and the top cover, and the insulating sheet is arranged between the first insulating support and the top cover; the battery cell support further comprises a second insulating support, a first side of the second insulating support is connected to a side of the first insulating support away from the insulating sheet, a second side of the second insulating support away from the first side is provided with a BMS card slot, and the second side is inserted into the BMS installation groove.

2. The cell holder of claim 1, wherein, the base is provided with a stepped groove near a side of the BMS installation groove, the stepped groove is in communication with the BMS installation groove, and a side wall of the second insulating support is provided with a clamping plate near an end of the BMS card slot, the clamping plate is matched with the stepped groove.

3. The cell holder of claim 2, wherein, an end of the clamping plate away from the first insulating support is provided with a clamping hole.

4. The cell holder of any one of claims 1-3, wherein, the base comprises a bottom plate, a plurality of first columns and a plurality of second columns protruding from the bottom plate, and the first columns and the second columns define the installation grooves with the bottom plate; the first inner cavity comprises a first sub-inner cavity arranged on the bottom plate, a second sub-inner cavity arranged on the first columns and a third sub-inner cavity arranged on the second columns, one end of the second sub-inner cavity and one end of the third sub-inner cavity are in communication with the first sub-inner cavity, and the other end of the third sub-inner cavity is in communication with the second inner cavity.

5. The cell holder of claim 4, wherein, an end of the second column away from the bottom plate is provided with a connecting ring, the first insulating support and the insulating sheet are respectively provided with a first perforation and a second perforation, and an end of the connecting ring away from the second column sequentially passes through the first perforation and the second perforation and is sealingly connected with the top cover, the third sub-inner cavity is in communication with the second inner cavity through an inner hole of the connecting ring.

6. The cell holder of claim 5, wherein, a first insertion ring protruding from a side of the top cover towards the bottom plate, an end of the first insertion ring away from the top cover is inserted into the inner hole of the connecting ring, and the inner hole of the first insertion ring is in communication with the second inner cavity and the inner hole of the connecting ring at two ends thereof; wherein the outer circumferential surface of the first insertion ring is sealingly matched with the hole wall of the inner hole of the connecting ring.

7. The cell holder of claim 6, wherein, A first annular groove is arranged on the top cover around the first insertion ring; a second insertion ring protrudes from one end of the connecting ring away from the second column, the second insertion ring is sleeved on the first insertion ring, one end of the second insertion ring away from the connecting ring is inserted into the first annular groove, and the second insertion ring is in sealing fit with the first annular groove.

8. The cell holder of any of claims 5-7, wherein, A matching hole is arranged on one side of the top cover facing the bottom plate, and one end of the connecting ring away from the second column is inserted into the matching hole.

9. The cell holder of any of claims 5-7, wherein, The cross section of the connecting ring is a polygon, and the shapes of the cross sections of the first and second through holes are consistent with the shape of the cross section of the connecting ring.

10. The cell holder of any of claims 5-7, wherein, A matching ring is arranged on one side of the insulating sheet close to the first insulating support, one end of the matching ring is connected with the insulating sheet, and the other end is located in the annular space between the first through hole and the connecting ring.

11. The cell holder of claim 4, wherein, An air inlet and an air outlet are arranged on the top cover.

12. The cell holder of any one of claims 1-3, wherein, A support column is arranged on the base, and the top cover is detachably connected with the support column.

13. The cell holder of any one of claims 1-3, wherein, The plurality of cell mounting grooves are divided into two groups, the BMS mounting groove is located between the two groups of cell mounting grooves, and the BDU mounting groove is located at one end of the BMS mounting groove and adjacent to the two groups of cell mounting grooves.

14. The cell holder of claim 13, wherein, A communication groove is arranged between adjacent two cell mounting grooves.

15. A battery module, comprising: The cell support includes: The cell support includes: A plurality of cells are arranged one by one corresponding to the plurality of cell mounting grooves. A CCS assembly is arranged between the base and the top cover, and the CCS assembly includes a first output pole and a busbar electrically connected with the cells. A BMS plate is arranged in the BMS mounting groove, and the BMS plate has a voltage acquisition end and a second output pole, the voltage acquisition end is electrically connected with the CCS assembly, and the voltage acquisition end electrically connected with the first output pole is electrically connected with the second output pole. A BDU module is arranged in the BDU mounting groove, and the BDU module is electrically connected with the second output pole.

16. The battery module of claim 15, wherein, The BDU module includes: A housing is provided with a receiving cavity, an input slot and an output slot, the input slot is located on one side of the housing away from the BMS plate, and the output slot is located on one side of the housing close to the top cover; A first input pole is arranged in the input slot; A third output pole is arranged in the output slot; A first high-voltage protection cover covers the input slot; A second high-voltage protection cover covers the output slot; An energy distribution unit is arranged in the receiving cavity, and the energy distribution unit electrically connects the first input pole with the third output pole. The first input pole is electrically connected with the second output pole.

17. The battery module of claim 16, wherein, The third output pole includes a third positive output pole and a third negative output pole, and an insulating partition plate is arranged between the third positive output pole and the third negative output pole, and the insulating partition plate is connected with the housing.

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