Battery cell holder and battery module

Abstract

The present application relates to the technical field of batteries, and provides a battery cell holder and a battery module. The battery cell holder is provided with a first direction and a second direction; the battery cell holder comprises: a holder body; a plurality of first busbar mounting grooves and a plurality of second busbar mounting grooves are formed in the holder body; the plurality of first busbar mounting grooves and the plurality of second busbar mounting grooves are sequentially arranged in the first direction; and the plurality of first busbar mounting grooves and the plurality of second busbar mounting grooves are arranged at intervals in the second direction, wherein each first busbar mounting groove comprises a first mounting sub-groove and a second mounting sub-groove, and the first mounting sub-groove and the second mounting sub-groove at least partially overlap in the second direction.

Description

Battery cell holder and battery module

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 1, 2023, with application number 202323288387.9. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a battery cell bracket and a battery module. Background Art

[0003] In recent years, soft-pack batteries have been widely used in the power and energy storage sectors. Their high energy density and compact size have been a major research and development focus. In related technologies, to increase the energy density of a battery module, multiple cells are electrically connected in sequence via busbars and mounted on a cell holder. SUMMARY OF THE INVENTION

[0004] The current battery cell holder has many gaps between the busbars and the battery cells, resulting in low space utilization of the battery cell holder.

[0005] In order to improve the defects of the prior art, the main purpose of this application is to provide a battery cell holder and a battery module to improve the problem of low space utilization of the battery cell holder.

[0006] To achieve the above objectives, in a first aspect, the present application provides a cell support, wherein the cell support has a first direction and a second direction, and the cell support includes:

[0007] A frame, wherein a first slot group and a second slot group are formed on the frame, the first slot group and the second slot group are spaced apart along a second direction, the first slot group includes a plurality of first busbar mounting slots, the second slot group includes a plurality of second busbar mounting slots, the plurality of first busbar mounting slots and the plurality of second busbar mounting slots are respectively arranged in sequence along the first direction, and the plurality of first busbar mounting slots and the plurality of second busbar mounting slots are spaced apart along the second direction;

[0008] Each of the first busbar mounting grooves includes a first mounting sub-groove and a second mounting sub-groove, and the first mounting sub-groove and the second mounting sub-groove at least partially overlap along the second direction;

[0009] And / or, each of the second busbar mounting grooves includes a third mounting sub-groove and a fourth mounting sub-groove, and the third mounting sub-groove and the fourth mounting sub-groove at least partially overlap along the second direction.

[0010] In some embodiments of the present application, the plurality of first mounting sub-grooves are alternately connected to the plurality of second mounting sub-grooves in sequence along the first direction;

[0011] And / or, the plurality of third mounting sub-grooves and the plurality of fourth mounting sub-grooves are alternately connected in sequence along the first direction.

[0012] In some embodiments of the present application, the plurality of first mounting sub-grooves are connected to the plurality of second mounting sub-grooves through overlapping portions along the second direction;

[0013] And / or, the plurality of third mounting sub-grooves are connected to the plurality of fourth mounting sub-grooves through overlapping portions along the second direction.

[0014] In some embodiments of the present application, a first through-groove for receiving a tab is formed at the bottom of the first busbar mounting groove, and the first through-groove is formed from the first mounting sub-groove and overlaps with the second mounting sub-groove along the second direction;

[0015] And / or, a second through slot for receiving the tab is formed at the bottom of the second busbar mounting slot, and the second through slot is formed from the third mounting sub-slot and overlaps with the fourth mounting sub-slot along the second direction.

[0016] In some embodiments of the present application, the first through groove communicates with the first mounting sub-groove and the second mounting sub-groove along the second direction;

[0017] And / or, the second through groove communicates with the third mounting sub-groove and the fourth mounting sub-groove along the second direction.

[0018] In some embodiments of the present application, along the first direction, in two adjacent first busbar mounting grooves, the second mounting sub-groove in one first busbar mounting groove is provided with a third through-groove for receiving a tab, the third through-groove extending along the second direction and communicating with the first mounting sub-groove in the other first busbar mounting groove, and the third through-groove is located between the two adjacent first through-grooves;

[0019] And / or, along the first direction, in two adjacent second busbar mounting grooves, a fourth mounting sub-groove in a second busbar mounting groove is provided with a fourth through-groove for passing a pole ear, and the fourth through-groove extends along the second direction and is connected to the third mounting sub-groove in another second busbar mounting groove, and the fourth through-groove is located between two adjacent second through-grooves.

[0020] In some embodiments of the present application, a plurality of first isolation walls and a plurality of second isolation walls are provided on the side of the frame facing away from the first busbar mounting slot, each of the first isolation walls is located between adjacent first through slots and the third through slots, and each of the second isolation walls is located between adjacent second through slots and the fourth through slots.

[0021] In some embodiments of the present application, the frame is further provided with a first output slot and a second output slot, the first output slot is arranged on one side of the first slot group along the first direction, and the first output slot is connected to the first bus mounting slot on one side of the first slot group, the second output slot is arranged on one side of the second slot group along the first direction, and the second output slot is connected to the second bus mounting slot on one side of the second slot group, along the first direction, the first output slot and the second output slot are respectively arranged on opposite sides of the frame; along the second direction, multiple first bus mounting slots and multiple second bus mounting slots are staggered along the second direction.

[0022] In some embodiments of the present application, a conductive through hole is formed at the bottom of the first output slot and the bottom of the second output slot.

[0023] In some embodiments of the present application, the frame is further provided with a harness groove, which is located between the first groove group and the second groove group and extends along the first direction.

[0024] In some embodiments of the present application, at least one temperature probe mounting hole is provided at the bottom of the wiring harness slot.

[0025] In a second aspect, an embodiment of the present application provides a battery module comprising the battery cell holder as described in the first aspect.

[0026] In some embodiments of the present application, further comprising:

[0027] a plurality of first conductive members and a plurality of second conductive members, wherein the first conductive member is disposed in the first busbar mounting slot, the second conductive member is disposed in the second busbar mounting slot, a first through slot and a third through slot are defined at the bottom of the first busbar mounting slot, the first through slot and the second through slot are spaced apart along the first direction, and a second through slot and a fourth through slot are defined at the bottom of the second busbar mounting slot, the second through slot and the fourth through slot are spaced apart along the first direction;

[0028] A plurality of battery cells are arranged along the first direction and installed on a side of the frame away from the first conductive member, the battery cells include a first pole tab and a second pole tab, the first pole tab passes through the first through slot or the third through slot to be connected to the first conductive member, and the second pole tab passes through the second through slot or the fourth through slot to be connected to the second conductive member.

[0029] In some embodiments of the present application, the battery module further includes a collection harness having multiple branch lines and a collection connector, one end of the collection harness is connected to the collection connector, a harness groove is provided on the frame, the harness groove is located between the first bus mounting groove and the second bus mounting groove and extends along the first direction, one end of the collection harness facing away from the collection connector extends into the harness groove, and multiple branch lines are respectively connected to the first conductive member and the second conductive member. Beneficial effects

[0030] In an embodiment of the present application, by opening a plurality of first mounting sub-grooves and second mounting sub-grooves, and making the first mounting sub-grooves and the second mounting sub-grooves at least partially overlap in the second direction, it is possible to open as many mounting sub-grooves as possible in the limited space of the frame, thereby improving the space utilization of the battery cell holder and achieving higher density battery module installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings of the embodiments. Obviously, the drawings described below only relate to some embodiments of the present application and are not intended to limit the present application.

[0032] FIG1 is a schematic structural diagram of a battery cell bracket provided in an embodiment of the present application (first perspective);

[0033] FIG2 is a schematic structural diagram of a battery cell bracket provided in an embodiment of the present application (second viewing angle);

[0034] FIG3 is a schematic structural diagram of a battery module provided in an embodiment of the present application;

[0035] FIG4 is a schematic diagram of the explosion structure of FIG3 (first perspective);

[0036] FIG5 is a schematic diagram of the explosion structure of FIG3 (second perspective).

[0037] Description of reference numerals:

[0038] 1-battery cell bracket; 11-frame; 111-first busbar mounting slot; 1111-first mounting sub-slot; 1112-second mounting sub-slot; 1113-first through-slot; 1114-third through-slot; 112-second busbar mounting slot; 1121-third mounting sub-slot; 1122-fourth mounting sub-slot; 1123-second through-slot; 1124-fourth through-slot; 113-wiring harness slot; 1131-temperature probe mounting hole; 12-first isolation wall; 13-second isolation wall; 14-first output slot; 15-second output slot; 151-conductive through-hole; 2-first conductive member; 3-second conductive member; 4-battery cell; 41-first pole ear; 42-second pole ear; 5-collection harness; 51-temperature collection probe; 6-collection connector; 7-separator; 8-glass fiber tape; 9-insulating board. Modes for Carrying Out the Invention

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0040] In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." The following description is provided to enable any person skilled in the art to make and use the present application. In the following description, details are listed for the purpose of explanation.

[0041] Referring to FIG. 1 and FIG. 2 , the present application provides a battery cell support 1 having a first orientation and a second orientation. The battery cell support 1 includes:

[0042] The frame 11 is provided with a first slot group and a second slot group, the first slot group and the second slot group are spaced apart along the second direction, the first slot group includes a plurality of first busbar mounting slots 111, the second slot group includes a plurality of second busbar mounting slots 112, the plurality of first busbar mounting slots 111 and the plurality of second busbar mounting slots 112 are arranged in sequence along the first direction, and the plurality of first busbar mounting slots 111 and the plurality of second busbar mounting slots 112 are spaced apart along the second direction;

[0043] In which, each first busbar mounting groove 111 includes a first mounting sub-groove 1111 and a second mounting sub-groove 1112, and the first mounting sub-groove 1111 and the second mounting sub-groove 1112 at least partially overlap along the second direction; and / or, each second busbar mounting groove 112 includes a third mounting sub-groove 1121 and a fourth mounting sub-groove 1122, and the third mounting sub-groove 1121 and the fourth mounting sub-groove 1122 at least partially overlap along the second direction.

[0044] It should be noted that the at least partial overlap of the first and second mounting sub-grooves 1112 along the second direction includes two situations: the first situation is that the first mounting sub-grooves 1111 and the second mounting sub-grooves 1112 are offset along the second direction; the second situation is that the first mounting sub-grooves 1111 and the second mounting sub-grooves 1112 are aligned along the second direction, i.e., completely overlapping. Similarly, the at least partial overlap of the third mounting sub-grooves 1121 and the fourth mounting sub-grooves 1122 along the second direction includes two situations: the first situation is that the third mounting sub-grooves 1121 and the fourth mounting sub-grooves 1122 are offset along the second direction; the second situation is that the third mounting sub-grooves 1121 and the fourth mounting sub-grooves 1122 are aligned along the second direction, i.e., completely overlapping. In this embodiment, whether the first mounting sub-grooves 1111 and the second mounting sub-grooves 1112 or the third mounting sub-grooves 1121 and the fourth mounting sub-grooves 1122 are used, the first situation is used, i.e., offset arrangement.

[0045] The technical solution provided in the present application is mainly achieved by opening a plurality of first bus bar mounting grooves 111 and a plurality of second bus bar mounting grooves 112 at intervals on the frame 11, and each first bus bar mounting groove 111 opening a first mounting sub-groove 1111 and a second mounting sub-groove 1112 set in a staggered manner, and each second bus bar mounting groove 112 opening a third mounting sub-groove 1121 and a fourth mounting sub-groove 1122 set in a staggered manner, so as to open as many mounting sub-grooves as possible in the limited space of the frame 11, thereby improving the space utilization of the battery cell holder 1 and achieving higher density battery module installation. In detail, it is mainly achieved by opening a plurality of first busbar mounting slots 111 and a plurality of second busbar mounting slots 112 on the frame 11, and the plurality of first busbar mounting slots 111 and the plurality of second busbar mounting slots 112 are staggered along the second direction, so that the first busbar mounting slots 111 and the second busbar mounting slots 112 can compress the space as much as possible in the first direction, thereby increasing the number of busbar mounting slots that can be opened on the frame 11; further, each first busbar mounting slot 111 includes a first mounting sub-groove 1111 and a second mounting sub-groove 1112 that are staggered, and each second busbar mounting slot 112 includes a third mounting sub-groove 1121 and a fourth mounting sub-groove 1122 that are staggered, so that the structures of the first busbar mounting slots 111 and the second busbar mounting slots 112 themselves are more compact, which can further improve the space utilization rate of the battery cell holder 1.

[0046] It should be noted that the first busbar mounting slots 111 staggered along the second direction can be arranged in one row or in multiple rows, and correspondingly, the second busbar mounting slots 112 staggered along the second direction can be arranged in one row or in multiple rows, which is not limited here. Also, in this embodiment, the first busbar mounting slot 111 includes a first mounting sub-groove 1111 and a second mounting sub-groove 1112. In other embodiments, the first busbar mounting slot 111 can also include more mounting sub-grooves, and all of them are staggered along the second direction, which is not limited here. Similarly, the mounting sub-grooves in the second busbar mounting slot 112 can also include only the third mounting sub-groove 1121 and the fourth mounting sub-groove 1122, or can include more mounting sub-grooves, which is not limited here.

[0047] In addition, the first busbar mounting slot 111 and the second busbar mounting slot 112 are both used to set up busbars, and the electrical conduction properties of the busbar set in the first busbar mounting slot 111 and the busbar set in the second busbar mounting slot 112 are opposite. In other embodiments, the busbar set in the first busbar mounting slot 111 and the busbar set in the second busbar mounting slot 112 are alternately connected to the positive polarity tabs and the negative polarity tabs of the battery cells, thereby connecting multiple battery cells in series.

[0048] In some embodiments, the plurality of first mounting sub-grooves 1111 and the plurality of second mounting sub-grooves 1112 are alternately connected in sequence along the first direction; and / or the plurality of third mounting sub-grooves 1121 and the plurality of fourth mounting sub-grooves 1122 are alternately connected in sequence along the first direction. The plurality of first mounting sub-grooves 1111 and the plurality of second mounting sub-grooves 1112 being alternately connected in sequence along the first direction means that the first mounting sub-grooves 1111 and the second mounting sub-grooves 1112 are closely adjacent to each other in the first direction, and there is no gap between adjacent first mounting sub-grooves 1111 and second mounting sub-grooves 1112 in the first direction, thereby improving the space utilization of the frame 11. Similarly, the plurality of third mounting sub-grooves 1121 and the plurality of fourth mounting sub-grooves 1122 being alternately connected in sequence along the first direction can also improve the space utilization of the frame 11. It should be noted that, the multiple first mounting sub-grooves 1111 and the multiple second mounting sub-grooves 1112 being alternately connected in sequence along the first direction means that along the first direction, the second mounting sub-grooves 1112 of the previous first bus mounting groove 111 are connected with the first mounting sub-grooves 1111 of the next first bus mounting groove 111; similarly, the multiple third mounting sub-grooves 1121 and the multiple fourth mounting sub-grooves 1122 being alternately connected in sequence along the first direction means that the third mounting sub-grooves 1121 of the previous second bus mounting groove 112 are connected with the fourth mounting sub-grooves 1122 of the next second bus mounting groove 112.

[0049] In some embodiments, multiple first installation sub-grooves 1111 and multiple second installation sub-grooves 1112 are connected through overlapping portions along the second direction, so that one bus can be installed in two connected installation sub-grooves, reducing the number of bus installations; and / or, multiple third installation sub-grooves 1121 and multiple fourth installation sub-grooves 1122 are connected through overlapping portions along the second direction. Similarly, one bus can be installed in two connected installation sub-grooves, reducing the number of bus installations.

[0050] In some embodiments, a first through-slot 1113 for inserting a tab is formed at the bottom of the first busbar mounting slot 111. The first through-slot 1113 extends from the first mounting sub-slot 1111 and overlaps with the second mounting sub-slot 1112 along the second direction. Furthermore, the first through-slot 1113 connects the first mounting sub-slot 1111 with the second mounting sub-slot 1112 along the second direction. The first through-slot 1113 is primarily used to allow the tabs on the battery cell 4 to pass through, so that the tabs can be electrically connected to the busbar located within the first busbar mounting slot 111. Providing the first through-slot 1113 within the first busbar mounting slot 111 helps conserve the limited space of the frame 11, so that the first through-slot 1113 does not occupy additional area of ​​the frame 11. Instead, a through-slot is further provided on the basis of the first busbar mounting slot 111. And because the first through-groove 1113 connects the first mounting sub-groove 1111 and the second mounting sub-groove 1112, when the first through-groove 1113 is opened, there is no need to position and open the first through-groove 1113 twice. The through-groove can be opened at the connection point between the first mounting sub-groove 1111 and the second mounting sub-groove 1112. And / or, the bottom of the second busbar mounting groove 112 is provided with a second through-groove 1123 for passing the pole ear. The second through-groove 1123 is opened from the third mounting sub-groove 1121 and overlaps with the fourth mounting sub-groove 1122 along the second direction. And the second through-groove 1123 connects the third mounting sub-groove 1121 and the fourth mounting sub-groove 1122 along the second direction. The second through-groove 1123 is mainly used to allow the battery cell pole ear on the power core 4 to pass through, so that the battery cell pole ear can be electrically connected to the busbar located in the second busbar mounting groove 112. Providing the second through-slot 1123 within the second busbar mounting slot 112 helps conserve the limited space of the frame 11, so that the second through-slot 1123 does not occupy additional area of ​​the frame 11, but is instead a further through-slot formed on the basis of the second busbar mounting slot 112. Furthermore, because the second through-slot 1123 connects the third mounting sub-slot 1121 and the fourth mounting sub-slot 1122, the second through-slot 1123 does not need to be positioned and opened twice during its creation. Instead, the through-slot can be directly opened at the connection between the third mounting sub-slot 1121 and the fourth mounting sub-slot 1122.

[0051] It should be noted that the area of ​​the busbar is larger than the contact area between the cell tabs and the busbar, which helps increase the heat dissipation area and helps the cell tabs dissipate heat. Furthermore, the connection between the first through-slot 1113 and the first mounting sub-slot 1111 and the second mounting sub-slot 1112 does not distinguish whether the connected first mounting sub-slot 1111 and the second mounting sub-slot 1112 belong to the same first busbar mounting slot 111. That is, the first through-slot 1113 includes the connection between the first mounting sub-slot 1111 and the second mounting sub-slot 1112 in the same first busbar mounting slot 111, and also includes the connection between the second mounting sub-slot 1112 in one first busbar mounting slot 111 and the first mounting sub-slot 1111 in another adjacent first busbar mounting slot 111. The second through-slot 1123 is similar to the first through-slot 1113 and will not be further described.

[0052] In some embodiments, along the first direction, in two adjacent first busbar mounting slots 111, the second mounting sub-slot 1112 in one first busbar mounting slot 111 is provided with a third through slot 1114 for passing the pole ear, and the third through slot 1114 extends along the second direction and connects to the first mounting sub-slot 1111 in the other first busbar mounting slot 111, and the third through slot 1114 is located between the two adjacent first through slots 1113. In other words, a third through slot 1114 is opened in a first busbar mounting slot 111, and the third through slot 1114 extends along the second direction to another first busbar mounting slot 111 adjacent to the first busbar mounting slot 111, and the third through slot 1114 is located between two adjacent first through slots 1113, so that the pole ears that were originally only able to be passed through the first through slot 1113 are now allowed to be passed through both the first through slot 1113 and the third through slot 1114, and the third through slot 1114 does not occupy other positions of the frame 11, but is arranged in a regular sequence along the first direction in each first busbar mounting slot 111. Compared with only setting the first through slot 1113, the number of pole ears can be increased without changing the area of ​​the frame 11. And / or, along the first direction, in two adjacent second busbar mounting slots 112, the fourth mounting sub-slot 1122 in one second busbar mounting slot 112 defines a fourth through-slot 1124 for receiving a tab. The fourth through-slot 1124 extends along the second direction and communicates with the third mounting sub-slot 1121 in the other second busbar mounting slot 112. The fourth through-slot 1124 is located between two adjacent second through-slots 1123. Similarly, the beneficial effects of providing the fourth through-slot 1124 are the same as those of providing the third through-slot 1114 and are not further described herein.

[0053] Furthermore, a plurality of first isolation walls 12 and a plurality of second isolation walls 13 are provided on the side of the frame 11 facing away from the first busbar mounting slot 111. Each first isolation wall 12 is located between adjacent first and third slots 1113 and 1114, and each second isolation wall 13 is located between adjacent second and fourth slots 1123 and 1124. The first, second, third, and fourth slots 1113 and 1124 are all used to allow the cell tabs to pass through, enabling electrical connection to the busbar. The main bodies of the plurality of battery cells 4 connected to the cell tabs are located directly below the first, second, third, and fourth slots 1113 and 1124, respectively. By providing the first and second isolation walls 12 and 13, two adjacent battery cells 4 can be effectively isolated. The first and second isolation walls 12 and 13 are primarily used to isolate the cell tabs of the battery cells 4. Since the battery cell tabs are prone to heat generation, isolating adjacent battery cell tabs with isolation walls can reduce heat concentration to a certain extent.

[0054] In some embodiments, the frame 11 is further provided with a first output slot 14 and a second output slot 15. A plurality of first busbar mounting slots 111 form a first slot group, and a plurality of second busbar mounting slots 112 form a second slot group. The first output slot 14 is located on one side of the first slot group along a first direction. The first output slot 14 communicates with the first slot group, meaning that the first output slot 14 communicates with the first busbar mounting slot 111 on one side of the first slot group. The second output slot 15 is located on the other side of the second slot group along the first direction, meaning that the other side is relative to the first output slot 14. The second output slot 15 communicates with the second slot group, meaning that the second output slot 15 communicates with the second busbar mounting slot 112 on one side of the second slot group. The first and second output slots 14, 15 are primarily used to accommodate output aluminum busbars. The output aluminum busbars provided in the first and second output slots 14, 15 have opposite electrical properties, forming positive and negative output electrodes, respectively, enabling the battery module to be connected to external devices. The first output slot 14 is connected to the first slot group, so that the first output slot 14 can be close to the first slot group, thereby improving the space utilization of the frame 11. Similarly, the second output slot 15 is connected to the second slot group, which also has the effect of improving the space utilization of the frame 11.

[0055] In addition, along the first direction, the first output slot 14 and the second output slot 15 are respectively arranged on opposite sides of the frame 11; along the second direction, multiple first busbar mounting slots 111 and multiple second busbar mounting slots 112 are staggered along the second direction, so that the first busbar mounting slots 111 and the second busbar mounting slots 112 can compress the space as much as possible in the first direction, increase the number of busbar mounting slots that can be opened in the frame 11, and improve the space utilization rate of the battery cell 4 bracket 1.

[0056] It should be noted that the first output slot 14 and the second output slot 15 can be arranged on the same side or on opposite sides along the first direction. In this embodiment, the first output slot 14 and the second output slot are arranged on opposite sides.

[0057] Furthermore, conductive through holes 151 are provided on the bottoms of the first output slot 14 and the second output slot 15 . The conductive through holes 151 can be provided with conductive posts or conductive posts for connecting external devices to facilitate electrical connection between the battery module and external devices.

[0058] In some embodiments, the frame 11 is further provided with a harness slot 113. The harness slot 113 is located between the first slot group and the second slot group and extends along the first direction. The harness slot 113 is mainly used to place the harness, so that the harness can be stored in the harness slot 113, and the harness can extend along the harness slot 113, so that the harness can be distributed to each bus mounting slot, thereby electrically connecting each bus mounting slot to complete information collection. The harness slot 113 is provided between the first bus mounting slot 111 and the second bus mounting slot 112, which not only utilizes the area that must be separated between the first bus mounting slot 111 and the second bus mounting slot 112, but also enables the harness slot 113 to extend through each bus mounting slot, thereby facilitating harness routing.

[0059] Furthermore, at least one temperature probe mounting hole 1131 is provided at the bottom of the wiring harness slot 113, so that the probe for monitoring the temperature can extend to one side of the battery cell 4 through the temperature probe mounting hole 1131, without having to set a probe installation position elsewhere on the frame 11, and the probe wiring can also be directly connected from the wiring harness slot 113, making wiring more convenient.

[0060] Referring to FIG. 1 to FIG. 5 , an embodiment of the present application further provides a battery module, comprising a cell holder 1 as in any of the aforementioned embodiments.

[0061] In some embodiments, the battery module further comprises:

[0062] Multiple first conductive members 2 and multiple second conductive members 3, the first conductive members 2 are arranged in the first busbar mounting groove 111, and the second conductive members 3 are arranged in the second busbar mounting groove 112. The bottom of the first busbar mounting groove 111 is provided with a first through groove 1113, and the bottom of the second busbar mounting groove 112 is provided with a second through groove 1123;

[0063] Multiple battery cells 4 are arranged along the first direction and installed on the side of the frame 11 away from the first conductive member 2. The battery cells 4 include a first pole tab 41 and a second pole tab 42. The first pole tab 41 passes through the first through slot 1113 to connect with the first conductive member 2, and the second pole tab 42 passes through the second through slot 1123 to connect with the second conductive member 3.

[0064] The multiple battery cells 4 in the battery module are mainly installed through the battery cell holder 1 described in the above embodiment, mainly by opening a plurality of staggered first bus bar mounting grooves 111 and a plurality of second bus bar mounting grooves 112 on the frame 11, and each first bus bar mounting groove 111 opens a staggered first mounting sub-groove 1111 and a second mounting sub-groove 1112, and each second bus bar mounting groove 112 opens a staggered third mounting sub-groove 1121 and a fourth mounting sub-groove 1122, and opens as many mounting sub-grooves as possible in the limited space of the frame 11, thereby improving the space utilization of the battery cell holder 1 and achieving higher density battery module installation. Specifically, the structure of the first busbar mounting slots 111 and the second busbar mounting slots 112 is further improved by providing the frame 11 with a plurality of first busbar mounting slots 111 and a plurality of second busbar mounting slots 112. The plurality of first busbar mounting slots 111 and the plurality of second busbar mounting slots 112 are staggered along the second direction, thereby minimizing the space between the first busbar mounting slots 111 and the second busbar mounting slots 112 in the first direction and increasing the number of busbar mounting slots that can be provided on the frame 11. Furthermore, each first busbar mounting slot 111 includes a first mounting sub-slot 1111 and a second mounting sub-slot 1112 arranged in a staggered manner, and each second busbar mounting slot 112 includes a third mounting sub-slot 1121 and a fourth mounting sub-slot 1122 arranged in a staggered manner. This makes the structures of the first busbar mounting slots 111 and the second busbar mounting slots 112 more compact, further improving the space utilization of the battery cell holder 1. While improving the space utilization of the battery cell holder 1, the number of integrated battery cells 4 is also increased, thereby improving the energy density of the battery module.

[0065] It should be noted that in this embodiment, as shown in Figures 4 and 5 , both the first conductive member 2 and the second conductive member 3 are aluminum bars. Multiple first conductive members 2 form a series aluminum bar, and multiple second conductive members 3 also form a series aluminum bar. In the parallel embodiment, the first conductive member 2 and the second conductive member 3 have opposite conductivities, with the first conductive member 2 conducting positive electricity and the second conductive member 3 conducting negative electricity. The battery cell 4 has a positive electrode and a negative electrode, and the positive and negative electricity are output through the first and second tabs 41 and 42. In this embodiment, the first tab 41 is the positive tab, and the second tab 42 is the negative tab. The first tab 41 is connected to the first conductive member 2, allowing electricity from the battery cell 4 to be output to the first conductive member 2. The second tab 42 is connected to the second conductive member 3, allowing electricity from the battery cell 4 to be output to the second conductive member 3. The first and second conductive members 2 and 3 have the same shape and are different in shape. A first conductive member 2 is disposed in a first mounting sub-groove 1111 and a second mounting sub-groove 1112 adjacent to each other along the second direction, and a second conductive member 3 is disposed in a third mounting sub-groove 1121 and a fourth mounting sub-groove 1122 adjacent to each other along the second direction. This arrangement increases the area of ​​the first conductive member 2 and the second conductive member 3, reduces the number of times the conductive members are installed, improves the assembly efficiency of the conductive members, and increases the heat dissipation area, thereby facilitating heat dissipation of the tab.

[0066] In addition, the connection between the first tab 41 and the first conductive member 2 is achieved by welding, and the connection between the second tab 42 and the second conductive member 3 is also achieved by welding. Compared with bolt connection, this can avoid the risk of the tabs being crushed, and the connection standards are easier to unify.

[0067] In some embodiments, the battery module further includes a positive output aluminum busbar and a negative output aluminum busbar. The positive output aluminum busbar is disposed within the first output slot 14, and the negative output aluminum busbar is disposed within the second output slot 15. Both the positive and negative output aluminum busbars are provided with output through-holes that communicate with the conductive through-holes 151, facilitating the placement or connection of the conductive posts.

[0068] In some embodiments, the battery module further includes a collection harness 5 having multiple branch lines and a collection connector 6. One end of the collection harness 5 is connected to the collection connector 6, which is used to integrate the current, voltage, and temperature conditions of multiple battery cells 4 collected by the collection harness 5 and connect to external detection equipment to collect information about the battery cells 4. A harness slot 113 is provided on the frame 11. The harness slot 113 is located between the first busbar mounting slot 111 and the second busbar mounting slot 112 and extends along a first direction. The end of the collection harness 5 facing away from the collection connector 6 extends into the harness slot 113, and multiple branch lines are respectively connected to the first conductive member 2 and the second conductive member 3 to collect current and voltage information for each battery cell 4.

[0069] Furthermore, at least one temperature collection probe 51 branches out from the collection harness 5, and at least one temperature probe mounting hole 1131 is provided at the bottom of the harness slot 113. Each temperature collection probe 51 extends to one side of the battery cell 4 through a temperature probe mounting hole 1131 for monitoring the temperature of the battery cell 4.

[0070] In some embodiments, multiple battery cells 4 are arranged in sequence along a first direction. Due to the adjacent through-slot structure of the battery cell holder 1, the distance between two adjacent battery cells 4 is very small, and the structure is more compact. In order to avoid the generation of a large amount of heat and heat concentration between adjacent battery cells 4, a separator 7 is provided between adjacent battery cells 4. The separator 7 has a low thermal conductivity and is insulating, which can isolate the temperature between adjacent battery cells 4. On the one hand, it can make the temperature acquisition probe 51 more accurate in monitoring the temperature of the battery cells 4. On the other hand, it can prevent the battery cells 4 from affecting each other, reduce and delay the propagation speed of thermal runaway between the battery cells 4, so as to ensure a safe reaction time and improve the safety of the battery module.

[0071] In some embodiments, among the multiple battery cells 4 arranged in sequence along the first direction, the first and last battery cells 4 are both provided with an insulating plate 9 on the side facing away from the other battery cells 4 to provide basic protection for the multiple battery cells 4 .

[0072] Furthermore, the battery module includes a glass fiber tape 8. Multiple battery cells 4 are arranged sequentially along a first direction, and the glass fiber tape 8 is wrapped around the outside of the battery cells 4 to bundle the multiple battery cells 4 together, thereby securing the multiple battery cells 4. Compared to the related art method of using steel tape and end plates for securing, the use of glass fiber tape 8 is more cost-effective and simpler.

[0073] The battery module in this embodiment can be used as a power battery for new energy vehicles, new energy working machinery, etc.

[0074] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0075] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers allow for ±% changes. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining the digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

Claims

1. A battery cell support, the battery cell support having a first direction and a second direction, the battery cell support comprising: A frame, wherein a first slot group and a second slot group are formed on the frame, the first slot group and the second slot group are spaced apart along a second direction, the first slot group includes a plurality of first busbar mounting slots, the second slot group includes a plurality of second busbar mounting slots, the plurality of first busbar mounting slots and the plurality of second busbar mounting slots are respectively arranged in sequence along the first direction, and the plurality of first busbar mounting slots and the plurality of second busbar mounting slots are spaced apart along the second direction; Each of the first busbar mounting grooves includes a first mounting sub-groove and a second mounting sub-groove, and the first mounting sub-groove and the second mounting sub-groove at least partially overlap along the second direction.

2. The battery cell support according to claim 1, wherein: The plurality of first mounting sub-grooves are alternately connected with the plurality of second mounting sub-grooves in sequence along the first direction.

3. The battery cell support according to claim 2, wherein: The plurality of first mounting sub-grooves are connected to the plurality of second mounting sub-grooves through overlapping portions along the second direction.

4. The battery cell support according to any one of claims 1 to 3, wherein: A first through slot for passing the pole ear is formed at the bottom of the first busbar installation slot. The first through slot is formed from the first installation sub-slot and overlaps with the second installation sub-slot along the second direction.

5. The battery cell support as claimed in claim 4, wherein: The first through groove communicates with the first mounting sub-groove and the second mounting sub-groove along the second direction.

6. The battery cell support as claimed in claim 4, wherein: Along the first direction, in two adjacent first busbar mounting grooves, a second mounting sub-groove in a first busbar mounting groove is provided with a third through groove for passing a pole ear, and the third through groove extends along the second direction and is connected to the first mounting sub-groove in another first busbar mounting groove, and the third through groove is located between two adjacent first through grooves.

7. The battery cell support as claimed in claim 6, wherein: A plurality of first isolation walls are disposed on one side of the frame body away from the first busbar installation slot, and each of the first isolation walls is located between adjacent first through slots and the third through slots.

8. The battery cell support as claimed in claim 1, wherein: Each of the second busbar mounting grooves includes a third mounting sub-groove and a fourth mounting sub-groove, and the third mounting sub-groove and the fourth mounting sub-groove at least partially overlap along the second direction.

9. The battery cell support as claimed in claim 8, wherein: The plurality of first mounting sub-grooves are connected to the plurality of second mounting sub-grooves in sequence and alternately along the first direction; The plurality of third mounting sub-grooves are alternately connected to the plurality of fourth mounting sub-grooves in sequence along the first direction.

10. The battery cell support as claimed in claim 9, wherein: The plurality of first mounting sub-grooves are connected to the plurality of second mounting sub-grooves through overlapping portions along the second direction; The plurality of third mounting sub-grooves are connected to the plurality of fourth mounting sub-grooves through overlapping portions along the second direction.

11. The battery cell support as claimed in claim 8, wherein: A first through slot for inserting a pole ear is formed at the bottom of the first busbar installation slot, and the first through slot is formed from the first installation sub-slot and overlaps with the second installation sub-slot along the second direction; A second through slot for passing the pole ear is formed at the bottom of the second busbar mounting slot. The second through slot is formed from the third mounting sub-slot and overlaps with the fourth mounting sub-slot along the second direction.

12. The battery cell support as claimed in claim 11, wherein: The first through groove is connected to the first mounting sub-groove and the second mounting sub-groove along the second direction; The second through groove communicates with the third mounting sub-groove and the fourth mounting sub-groove along the second direction.

13. The battery cell support as claimed in claim 11, wherein: Along the first direction, in two adjacent first busbar mounting grooves, a second mounting sub-groove in one first busbar mounting groove is provided with a third through groove for passing a pole ear, the third through groove extends along the second direction and communicates with the first mounting sub-groove in another first busbar mounting groove, and the third through groove is located between two adjacent first through grooves; Along the first direction, in two adjacent second bus mounting grooves, a fourth mounting sub-groove in one second bus mounting groove is provided with a fourth through groove for passing a pole ear, and the fourth through groove extends along the second direction and is connected to the third mounting sub-groove in another second bus mounting groove, and the fourth through groove is located between two adjacent second through grooves.

14. The battery cell support as claimed in claim 13, wherein: A plurality of first isolation walls and a plurality of second isolation walls are provided on the side of the frame away from the first busbar mounting slot, each of the first isolation walls is located between adjacent first through slots and the third through slots, and each of the second isolation walls is located between adjacent second through slots and the fourth through slots.

15. The battery cell support according to any one of claims 1 to 14, wherein: The frame is also provided with a first output slot and a second output slot, the first output slot is arranged at one side of the first slot group along the first direction, and the first output slot is communicated with the first bus mounting slot on one side of the first slot group, the second output slot is arranged at one side of the second slot group along the first direction, and the second output slot is communicated with the second bus mounting slot on one side of the second slot group, along the first direction, the first output slot and the second output slot are respectively arranged on opposite sides of the frame; along the second direction, a plurality of the first bus mounting slots and a plurality of the second bus mounting slots are staggeredly arranged along the second direction.

16. The battery cell support as claimed in claim 15, wherein: Conductive through holes are formed at the bottom of the first output groove and the bottom of the second output groove.

17. The battery cell support according to any one of claims 1 to 16, wherein: The frame is further provided with a harness groove, which is located between the first groove group and the second groove group and extends along the first direction.

18. The battery cell support as claimed in claim 17, wherein: At least one temperature probe installation hole is provided at the bottom of the wiring harness slot.

19. A battery cell support, the battery cell support having a first direction and a second direction, the battery cell support comprising: A frame, wherein a first slot group and a second slot group are formed on the frame, the first slot group and the second slot group are spaced apart along a second direction, the first slot group includes a plurality of first busbar mounting slots, the second slot group includes a plurality of second busbar mounting slots, the plurality of first busbar mounting slots and the plurality of second busbar mounting slots are respectively arranged in sequence along the first direction, and the plurality of first busbar mounting slots and the plurality of second busbar mounting slots are spaced apart along the second direction; Each of the second busbar mounting grooves includes a third mounting sub-groove and a fourth mounting sub-groove, and the third mounting sub-groove and the fourth mounting sub-groove at least partially overlap along the second direction.

20. The battery cell support as claimed in claim 19, wherein: The plurality of third mounting sub-grooves are alternately connected to the plurality of fourth mounting sub-grooves in sequence along the first direction.

21. The battery cell support as claimed in claim 20, wherein: The plurality of third mounting sub-grooves are connected to the plurality of fourth mounting sub-grooves through overlapping portions along the second direction.

22. The battery cell support according to any one of claims 19 to 21, wherein: A second through slot for passing the pole ear is formed at the bottom of the second busbar mounting slot. The second through slot is formed from the third mounting sub-slot and overlaps with the fourth mounting sub-slot along the second direction.

23. The battery cell support as claimed in claim 22, wherein: The second through groove communicates with the third mounting sub-groove and the fourth mounting sub-groove along the second direction.

24. The battery cell support as claimed in claim 22, wherein: Along the first direction, in two adjacent second bus mounting grooves, a fourth mounting sub-groove in one second bus mounting groove is provided with a fourth through groove for passing a pole ear, and the fourth through groove extends along the second direction and is connected to the third mounting sub-groove in another second bus mounting groove, and the fourth through groove is located between two adjacent second through grooves.

25. The battery cell support as claimed in claim 24, wherein: A plurality of second isolation walls are disposed on one side of the frame away from the first busbar installation slot, and each of the second isolation walls is located between adjacent second through slots and fourth through slots.

26. The battery cell support according to any one of claims 19 to 25, wherein: The frame is also provided with a first output slot and a second output slot, the first output slot is arranged at one side of the first slot group along the first direction, and the first output slot is communicated with the first bus mounting slot on one side of the first slot group, the second output slot is arranged at one side of the second slot group along the first direction, and the second output slot is communicated with the second bus mounting slot on one side of the second slot group, along the first direction, the first output slot and the second output slot are respectively arranged on opposite sides of the frame; along the second direction, a plurality of the first bus mounting slots and a plurality of the second bus mounting slots are staggeredly arranged along the second direction.

27. The battery cell support as claimed in claim 26, wherein: Conductive through holes are formed at the bottom of the first output groove and the bottom of the second output groove.

28. A battery module, comprising the battery cell support according to any one of claims 1 to 27.

29. The battery module according to claim 28, wherein: Also includes: A plurality of first conductive members and a plurality of second conductive members, wherein the first conductive member is disposed in the first busbar mounting groove, the second conductive member is disposed in the second busbar mounting groove, a first through groove and a third through groove are formed at the bottom of the first busbar mounting groove, the first through groove and the second through groove are spaced apart along the first direction, a second through groove and a fourth through groove are formed at the bottom of the second busbar mounting groove, the second through groove and the fourth through groove are spaced apart along the first direction; A plurality of battery cells are arranged along the first direction and installed on a side of the frame away from the first conductive member, the battery cells include a first pole ear and a second pole ear, the first pole ear passes through the first through slot or the third through slot to be connected to the first conductive member, and the second pole ear passes through the second through slot or the fourth through slot to be connected to the second conductive member.

30. The battery module according to claim 29, wherein: The battery module also includes a collection harness having multiple branch lines and a collection connector, one end of the collection harness is connected to the collection connector, a harness groove is provided on the frame, the harness groove is located between the first bus bar installation groove and the second bus bar installation groove and extends along the first direction, one end of the collection harness away from the collection connector extends into the harness groove, and multiple branch lines are respectively connected to the first conductive member and the second conductive member.

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