Battery bracket and battery module

Abstract

The utility model provides a battery bracket and a battery module. The battery support comprises a first support, a second support and a fastener, and the second support is used for being opposite to the first support and arranged at an interval so as to clamp a battery monomer group; the fastener connects the first bracket and the second bracket. The first support is provided with a plurality of functional structures which are arranged at intervals, each functional structure comprises a positive electrode welding through hole, a negative electrode welding through hole and a first partition piece, the positive electrode welding through holes and the negative electrode welding through holes are arranged at intervals, and the first partition pieces are arranged on the side, away from the second support, of the first support in a protruding mode. The first partition piece is arranged between the positive electrode welding through hole and the negative electrode welding through hole; the positive electrode welding through hole and the negative electrode welding through hole are used for exposing the positive terminal and the negative terminal of the cylindrical battery cell of the battery monomer group, and the first separation piece separates the two confluence components connected with the positive terminal and the negative terminal of the corresponding cylindrical battery cell, so that the short circuit of the positive electrode and the negative electrode of the cylindrical battery cell caused by welding is effectively prevented; and the safety of the battery module is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery bracket and a battery module. Background Technology

[0002] A power battery refers to a power source that provides power to tools or equipment. For example, power batteries are widely used in electric vehicles. With the development of electric vehicles, power batteries have become a core component and therefore have a large market demand.

[0003] For different arrangements of cylindrical batteries, multiple battery cells can be connected in series and parallel through busbar components to form corresponding modules. Currently, most cylindrical battery cells on the market use a structure in which the positive and negative electrodes are distributed on opposite sides. However, with the development of battery cells, cylindrical battery cells are now starting to adopt a scheme in which the positive and negative electrodes are distributed on the same side. This concentrates the welding of the busbar components on the same side of the battery cell. However, the existing battery module structure cannot meet the requirement of same-side welding of battery modules.

[0004] Safety is a crucial issue in battery development. Therefore, for battery modules using cylindrical cells with positive and negative electrodes on the same side, reducing the risk of welding short circuits and enhancing battery safety is a pressing technical challenge. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a battery bracket and battery module that can meet the welding requirements on the same side and have high reliability, effectively avoiding welding short circuits and improving the safety performance of the battery module.

[0006] According to a first aspect, a battery holder is provided for assembling a battery cell assembly comprising multiple cylindrical cells, wherein the positive and negative terminals of the cylindrical cells are located at the same end; the battery holder includes:

[0007] First support;

[0008] The second bracket is positioned opposite and spaced apart from the first bracket to hold the battery cell assembly.

[0009] And fasteners, which connect the first bracket and the second bracket;

[0010] The first support has multiple sets of spaced-apart functional structures. Each set of functional structures includes a positive electrode welding through hole, a negative electrode welding through hole, and a first partition. The positive electrode welding through hole and the negative electrode welding through hole are spaced apart. The first partition protrudes from the side of the first support away from the second support and is located between the positive electrode welding through hole and the negative electrode welding through hole. The positive electrode welding through hole is used to expose the positive terminal of the cylindrical battery cell, and the negative electrode welding through hole is used to expose the negative terminal of the cylindrical battery cell. The first partition is used to separate the two busbars connected to the positive terminal and the negative terminal of the corresponding cylindrical battery cell.

[0011] In one optional embodiment, in a set of functional structures, positive electrode welding through holes and negative electrode welding through holes are spaced apart along a first direction, and a first partition is disposed between the positive electrode welding through holes and negative electrode welding through holes along the first direction.

[0012] The first bracket also has a plurality of protruding second partitions on the side opposite to the second bracket. A second partition is provided between two adjacent first partitions along the first direction. The second partitions are spaced apart from and / or connected to the first partitions to form a positioning groove for installing the busbar component.

[0013] In one optional embodiment, the positive electrode welding through hole and the negative electrode welding through hole are spaced apart along a first direction. The functional structure also includes two through first explosion-proof holes, which are disposed opposite to each other on both sides of the negative electrode welding through hole along a second direction. The first direction and the second direction are perpendicular to each other, and both the first direction and the second direction are perpendicular to the axial direction of the cylindrical cell. One of the two first explosion-proof holes is used to expose a first explosion-proof valve of the cylindrical cell.

[0014] In one optional embodiment, the first explosion-proof hole is an oblong hole, and the dimension of the first explosion-proof hole along the first direction is greater than the dimension of the first explosion-proof hole along the second direction.

[0015] In one optional embodiment, the second bracket has a plurality of through-holes for corresponding one-to-one with the second explosion-proof valve of the cylindrical battery cell; the outer surface of the second bracket opposite to the first bracket is formed with a pressure relief channel for airflow, the pressure relief channel is connected to the plurality of second explosion-proof holes, and the pressure relief channel has a plurality of pressure relief outlets located on the side of the battery bracket.

[0016] In one optional embodiment, the second bracket has a plurality of protruding support protrusions on its outer surface away from the first bracket. The plurality of support protrusions are spaced apart and correspond one-to-one with a plurality of second explosion-proof holes. The space between the plurality of support protrusions together forms a pressure relief channel. The support protrusions surround the second explosion-proof holes circumferentially. The support protrusions are provided with at least one notch, which connects the pressure relief channel and the second explosion-proof hole.

[0017] In one optional embodiment, the second bracket has a protruding rim facing away from the outer surface of the first bracket. The rim surrounds the four edges of the second bracket. The space between the multiple support protrusions and the space between the support protrusions and the rim together form a pressure relief channel. The pressure relief outlet passes through the rim. The multiple pressure relief outlets are spaced apart along the four edges of the second bracket. The rim and the support protrusions are flush in the first direction.

[0018] In one optional embodiment, the first bracket has a plurality of first positioning parts on the side facing the second bracket, and the second bracket has a plurality of second positioning parts on the side facing the first bracket. The first positioning parts are used to position one end of the cylindrical cell where the positive terminal and the negative terminal are located, and the second positioning parts are used to position the end of the cylindrical cell away from the positive terminal.

[0019] According to the second aspect, a battery module is provided, comprising:

[0020] The aforementioned battery bracket;

[0021] A battery cell assembly comprises multiple cylindrical cells, each having a positive terminal and a negative terminal located at the same end.

[0022] And multiple busbars, which are electrically connected to multiple cylindrical cells;

[0023] The battery cell assembly is sandwiched between the first and second supports, with both the positive and negative terminals facing the first support. Multiple cylindrical cells correspond one-to-one with multiple functional structures, so that the positive terminal is exposed through the positive electrode welding through hole and the negative terminal is exposed through the negative electrode welding through hole. The first partition can separate the two busbars connected to the positive and negative terminals of the corresponding cylindrical cells.

[0024] In one optional embodiment, the battery module further includes a data acquisition component, which is electrically connected to at least a portion of the busbar components; the first bracket is provided with a plurality of fasteners for connecting and fixing the data acquisition component, and both the fasteners and the data acquisition component are located on the outer surface of the first bracket away from the second bracket.

[0025] According to the battery bracket of the above embodiment, a set of functional structures on the first bracket corresponds to a cylindrical battery cell, so as to expose the positive and negative terminals of the cylindrical battery cell to the first bracket for subsequent welding. The positive and negative welding through holes for welding are separated by a first partition, so as to separate the positive and negative welding areas of the same cylindrical battery cell when welding the busbar, thereby separating the two busbar components connected to the positive and negative terminals of the corresponding cylindrical battery cell. This can effectively prevent short circuits caused by short circuits between the positive and negative terminals of the cylindrical battery cell, effectively solve the welding problem of cylindrical positive and negative terminals on the same side in the prior art, and improve the safety of the battery module. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall assembly of the battery holder provided in some embodiments of the present invention.

[0027] Figure 2 for Figure 1 An exploded diagram of the battery holder.

[0028] Figure 3 for Figure 1 A schematic diagram of the first support in the diagram.

[0029] Figure 4 for Figure 3 Another perspective illustration.

[0030] Figure 5 for Figure 1 A schematic diagram of the second support in the diagram.

[0031] Figure 6 for Figure 5 Another perspective illustration.

[0032] Figure 7 This is a schematic diagram of a battery module provided in some embodiments of the present invention.

[0033] Figure 8 for Figure 7 Another perspective illustration.

[0034] Figure 9 for Figure 8 Enlarged diagram of point A.

[0035] Figure 10 This is a schematic diagram of the cylindrical cell of a battery pack from another perspective.

[0036] Figure 11 for Figure 7 An exploded view of the battery module.

[0037] Figure 12 for Figure 7 A schematic diagram of a battery module without a busbar and a data acquisition unit installed.

[0038] Figure 13 for Figure 7 This is a schematic diagram showing a battery module without a data acquisition component installed.

[0039] Attached image label: 1000 - Battery module;

[0040] 100-Battery bracket; 110-First bracket; 111-Functional structure; 112-Positive electrode welding through hole; 113-Negative electrode welding through hole; 114-First partition; 115-First explosion-proof hole; 116-Second partition; 117-First positioning part; 120-Second bracket; 121-Second explosion-proof hole; 122-Pressure relief channel; 123-Pressure relief outlet; 124-Supporting protrusion; 125-Notch; 126-Edge; 127-Second positioning part; 130-Fastener; 140-Fixing component;

[0041] 200-Battery cell assembly; 210-Cylindrical cell; 211-Positive terminal; 212-Negative terminal; 213-First explosion-proof valve; 214-Injection port; 215-Second explosion-proof valve; 300-Bucket assembly; 400-Data acquisition assembly; 410-Main harness; 420-Data acquisition terminal. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0043] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0044] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0045] Currently, common battery modules include several components such as battery brackets, battery cell groups, busbars, and data acquisition components. For battery cell groups with different arrangements, the battery brackets with corresponding structures can fix the battery cell groups, and the busbars can connect the battery cell groups in series and parallel to form the corresponding battery module. Most cylindrical cells on the market are designed with the positive and negative terminals located at different ends. However, with the development of cylindrical cells, some designs now use cylindrical cells with the positive and negative terminals located at the same end, allowing the welding of the busbars to the battery cell group to be performed on the same side of the battery cell group. However, current battery brackets cannot accommodate the fixing of cylindrical cells with the positive and negative terminals on the same side, failing to meet the welding requirements of cylindrical cells with the positive and negative terminals on the same side, and also posing a risk of welding short circuits. Therefore, to solve the above technical problems, this utility model provides a battery bracket and battery module, effectively solving the welding problem of cylindrical cells with the positive and negative terminals on the same side in the prior art, and improving the safety of the battery module.

[0046] This utility model discloses a battery bracket for assembling a battery pack comprising multiple cylindrical cells, wherein the positive and negative terminals of the cylindrical cells are located at the same end. Please refer to... Figure 1-Figure 1 The battery bracket 100 includes a first bracket 110, a second bracket 120, and a fastener 130. The second bracket 120 is positioned opposite to and spaced apart from the first bracket 110. The fastener 130 connects the first bracket 110 and the second bracket 120 to clamp and fix the battery cell assembly 200 between the first bracket 110 and the second bracket 120.

[0047] To adapt to the positive terminal 211 and negative terminal 212 of the cylindrical battery cell 210, and to facilitate subsequent soldering operations, please refer to... Figures 1-6 The first support 110 has multiple sets of spaced-apart functional structures 111. Each set of functional structures 111 includes a positive electrode welding through hole 112, a negative electrode welding through hole 113, and a first partition 114. The positive electrode welding through holes 112 and 113 are spaced apart. The first partition 114 protrudes from the side of the first support 110 away from the second support 120 and is located between the positive electrode welding through holes 112 and 113. The side of the first support 110 away from the second support 120 is the side where welding operations will be performed. The positive electrode welding through hole 112 exposes the positive terminal 211 of the cylindrical cell 210, and the negative electrode welding through hole 113 exposes the negative terminal 212 of the cylindrical cell 210. The first partition 114 separates the two busbars 300 connected to the corresponding positive terminal 211 and negative terminal 212 of the cylindrical cell 210.

[0048] According to the battery holder 100 of this embodiment, in use, a set of functional structures 111 of the battery holder 100 corresponds to the position of a cylindrical cell 210, so that the positive terminal 211 and the negative terminal 212 of the cylindrical cell 210 are exposed on the first holder 110 for subsequent welding. The positive welding through hole 112 and the negative welding through hole 113 used for welding are separated by the first partition 114, so that when welding the busbar, the positive welding area and the negative welding area of ​​the same cylindrical cell 210 are separated, which can also separate the two bus members 300 connected to the same cylindrical cell 210. On the one hand, it can effectively prevent the two bus members 300 from directly contacting each other and play a coarse positioning role for the bus members 300. On the other hand, the protruding first partition 114 can effectively prevent material from splashing between the two adjacent bus members 300 during welding, thereby effectively preventing short circuits caused by short circuits between the positive and negative terminals of the cylindrical cell 210. According to the battery bracket 100 of this embodiment, the positive electrode welding through hole 112 and the negative electrode welding through hole 113 for welding are both provided on the first bracket 110, which are adapted to the battery cell group 200 of the cylindrical cell 210 with the positive terminal 211 and the negative terminal 212 located on the same side. At the same time, the welding problem of the cylindrical cell 210 with the positive and negative terminals on the same side in the prior art is effectively solved by the first partition 114, which is conducive to improving the safety of the battery module 1000.

[0049] This utility model does not limit the arrangement of the multiple functional structures 111. The multiple functional structures 111 can be designed according to the same arrangement rules or according to different arrangement rules. It is only necessary to ensure that the positive electrode welding through hole 112, negative electrode welding through hole 113 and the first partition 114 in each functional structure 111 satisfy the condition that "the positive electrode welding through hole 112 and the negative electrode welding through hole 113 are separated by the first partition 114".

[0050] In some embodiments, please refer to Figure 3 and Figure 4 In a set of functional structures 111, positive electrode welding through holes 112 and negative electrode welding through holes 113 are spaced apart along a first direction, and a first partition 114 is disposed between the positive electrode welding through holes 112 and negative electrode welding through holes 113 along the first direction. By making each set of functional structures 111 follow the same arrangement rule and specify the direction, it is more regular, which is beneficial to the arrangement of the battery cell group 200 and the arrangement of other functional components of the battery module 1000.

[0051] It should be noted that the above-mentioned "positive electrode welding through hole 112 and negative electrode welding through hole 113 are arranged at intervals along the first direction" only limits the arrangement direction and does not limit the arrangement order of the positive electrode welding through hole 112 and negative electrode welding through hole 113. That is to say, in some embodiments, along the first direction, all functional structures 111 can be arranged in the order of "positive electrode welding through hole 112 - first partition 114 - negative electrode welding through hole 113" or all in the order of "negative electrode welding through hole 113 - first partition 114 - positive electrode welding through hole 112". In other embodiments, along the first direction, some groups of functional structures 111 can also be arranged in the order of "positive electrode welding through hole 112 - first partition 114 - negative electrode welding through hole 113", and the remaining groups of functional structures 111 can be arranged in the order of "negative electrode welding through hole 113 - first partition 114 - positive electrode welding through hole 112".

[0052] Additionally, in some embodiments, the first partition 114 may be detachably disposed on the first bracket 110; in other embodiments, such as those described above... Figure 3 The first partition 114 can also be integrally formed into the first bracket 110.

[0053] In some embodiments, please refer to Figure 3 and Figure 4 In order to make full use of the layout and structure of the first partition 114, the side of the first bracket 110 away from the second bracket 120 may also have a plurality of protruding second partitions 116. A second partition 116 is provided between two adjacent first partitions 114 along the first direction. The second partitions 116 are spaced apart from and / or connected to the first partitions 114 to form a positioning groove for installing the busbar component 300. The first partitions 114 and the second partitions 116 play a role in positioning and limiting the busbar component 300, so as to effectively prevent the busbar component 300 from being misaligned when it is assembled onto the first bracket 110.

[0054] Those skilled in the art should understand that at least one second partition 116 can be provided between two adjacent first partitions 114 along the first direction. When there are two or more second partitions 116, the two second partitions 116 are spaced apart to jointly enclose the aforementioned positioning groove. The number and position of the second partitions 116 can be adaptively adjusted according to actual needs, and this utility model does not impose specific limitations. Similarly, in some embodiments, the second partition 116 can be detachably provided on the first bracket 110; in other embodiments, such as those described above... Figure 3 The second partition 116 can also be integrally formed with the first bracket 110, but this application does not limit it.

[0055] It should be noted that a second partition 116 may be provided on the outer side of the first partition 114 located at both ends of the first direction, so as to jointly position the confluence member 300 located at both ends of the first direction.

[0056] In some embodiments, please refer to Figures 1-4 The positive electrode welding through-hole 112 and the negative electrode welding through-hole 113 are spaced apart along a first direction. The functional structure 111 also includes two through first explosion-proof holes 115. The two first explosion-proof holes 115 are arranged opposite each other on both sides of the negative electrode welding through-hole 113 along a second direction. The first direction and the second direction are perpendicular to each other, and both the first direction and the second direction are perpendicular to the axial direction of the cylindrical cell 210. One of the two first explosion-proof holes 115 is used to expose the first explosion-proof valve 213 of the cylindrical cell 210. By arranging the two first explosion-proof holes 115 on opposite sides of the negative electrode welding through-hole 113 along the second direction, and aligning the first explosion-proof valve 213 with one of the cylindrical cells 210 during assembly, the first explosion-proof valve 213 of the cylindrical cell 210 can avoid the negative electrode welding area and the positive electrode welding area of ​​the cylindrical cell 210. Meanwhile, since the first bracket 110 is provided with two opposing first explosion-proof holes 115, when assembling the battery cell group 200 and the battery bracket 100, there are more selectable angles for the placement of the cylindrical cell 210. There are multiple placement schemes that can achieve the alignment of the cylindrical cell 210 with the functional structure 111, which can greatly reduce the difficulty of cell placement.

[0057] Please refer to Figures 1-4 The first direction is the length direction of the first bracket 110 and the second bracket 120, and the second direction is the width direction of the first bracket 110 and the second bracket 120.

[0058] In addition, if the positive terminal 211 of the cylindrical cell 210 is the entire end face of the cylindrical cell 210, and the negative terminal 212 of the cylindrical cell 210 is located in the middle of the positive terminal 211, then it is only necessary to expose the negative terminal 212 through the negative electrode welding through hole 113 and expose the first explosion-proof valve 213 through one of the first explosion-proof holes 115. In this case, the difficulty of placing the cylindrical cell 210 can be greatly reduced.

[0059] In some embodiments, please refer to Figure 3 and Figure 4 To further avoid the impact of welding on the explosion-proof valve, a second partition 116 can be provided between the first explosion-proof hole 115 and the negative electrode welding through hole 113 along the second direction to separate the two first explosion-proof holes 115 and the negative electrode welding through hole 113.

[0060] In some embodiments, please refer to Figure 3In order to further reduce the difficulty of placing the cylindrical battery cell 210 and improve the alignment accuracy between the first bracket 110 and the cylindrical battery cell 210, the first explosion-proof hole 115 can be an oblong hole, and the size of the first explosion-proof hole 115 along the first direction is larger than the size of the first explosion-proof hole 115 along the second direction, so that the first explosion-proof hole 115 can be aligned and cooperate with the first explosion-proof valve 213 within a certain angle range.

[0061] In some embodiments, please refer to Figure 5 and Figure 6 The second bracket 120 has multiple through-holes 121 for each second explosion-proof hole, which corresponds to the second explosion-proof valve 215 of the cylindrical cell 210. A pressure relief channel 122 for airflow is formed on the outer surface of the second bracket 120 away from the first bracket 110. The pressure relief channel 122 is connected to the multiple second explosion-proof holes 121 and has multiple pressure relief outlets 123 located on the side of the battery bracket 100. By providing the second explosion-proof holes 121 and pressure relief channels 122 on the second bracket 120, an exhaust structure can be added to the bottom of the battery module 1000. When the second explosion-proof valve 215 of the cylindrical cell 210 is opened, the gas inside the cylindrical cell 210 can effectively flow from the second explosion-proof holes 121 to the pressure relief channels 122, and finally be released through the pressure relief outlets 123 on the side of the second bracket 120, which helps reduce heat accumulation and improves the safety of the battery module 1000.

[0062] In some embodiments, please refer to Figure 5 and Figure 6 The second bracket 120 has multiple protruding support protrusions 124 on its outer surface opposite to the first bracket 110. These protrusions are spaced apart and correspond one-to-one with multiple second explosion-proof holes 121. The space between the protrusions forms a pressure relief channel 122. Each protrusion surrounds one of the second explosion-proof holes 121 circumferentially. Each protrusion has at least one notch 125 connecting the pressure relief channel 122 and the second explosion-proof hole 121. The presence of the support protrusions 124 on the second bracket 120 provides more space for heat dissipation of the battery cell assembly 200, extending the gas flow path and providing sufficient pressure relief space, thus reducing heat accumulation. Simultaneously, the spaced support protrusions 124 support and form the pressure relief channel 122, which directly connects to the outside. The notches 125 on the support protrusions 124 also directly connect to the pressure relief channel 122, simplifying the forming process and facilitating manufacturing.

[0063] In some embodiments, please refer to Figure 5 and Figure 6The second support 120 has a protruding rim 126 on its outer surface opposite to the first support 110. The rim 126 surrounds the four edges of the second support 120. The space between the multiple support protrusions 124 and the space between the support protrusions 124 and the rim 126 together form a pressure relief channel 122. The pressure relief outlet 123 passes through the rim 126. The multiple pressure relief outlets 123 are spaced apart along the four edges of the second support 120. The rim 126 is flush with the support protrusions 124 in the first direction. Since the support protrusion 124 corresponds to the cylindrical battery cell 210 and the second explosion-proof valve 215 on it, when the second explosion-proof valve 215 is depressurized, it directly causes an impact. Therefore, by setting a surrounding edge 126 on the circumferential edge of the second bracket 120, all the support protrusions 124 are placed in the space enclosed by the surrounding edge 126. The support protrusions 124 and the surrounding edge 126 together achieve the supporting function, effectively improving the support stability and enhancing the impact resistance of the second bracket 120.

[0064] In some embodiments, please refer to Figures 3-6 In order to stably clamp and position each cylindrical cell 210 of the battery cell assembly 200 and prevent the cylindrical cell 210 from shifting position, the first bracket 110 has a plurality of first positioning parts 117 on the side facing the second bracket 120, and the second bracket 120 has a plurality of second positioning parts 127 on the side facing the first bracket 110. The first positioning parts 117 are used to position the end of the cylindrical cell 210 where the positive terminal 211 and the negative terminal 212 are located, and the second positioning parts 127 are used to position the end of the cylindrical cell 210 away from the positive terminal 211.

[0065] In some embodiments, please refer to Figures 3-6 The first positioning part 117 and the second positioning part 127 are both circular positioning blind holes. The positioning blind hole of the first positioning part 117 is connected to the positive electrode welding through hole 112 and the negative electrode welding through hole 113 on the first bracket 110. The positioning blind hole of the second positioning part 127 is part of the second explosion-proof hole 121.

[0066] Based on the same inventive concept, this utility model also provides a battery module 1000, please refer to it. Figures 7-13The system includes a battery cell assembly 200, multiple busbar components 300, and the battery support 100 described in the above embodiment. The battery cell assembly 200 includes multiple cylindrical cells 210, each having a positive terminal 211 and a negative terminal 212 located at the same end. Multiple busbar components 300 electrically connect the multiple cylindrical cells 210. The battery cell assembly 200 is sandwiched between a first support 110 and a second support 120. Both the positive terminal 211 and the negative terminal 212 face the first support 110. Each cylindrical cell 210 corresponds one-to-one with multiple functional structures 111, such that the positive terminal 211 is exposed through a positive electrode welding through-hole 112, and the negative terminal 212 is exposed through a negative electrode welding through-hole 113. A first partition 114 separates the two busbar components 300 connected to the positive terminal 211 and the negative terminal 212 of the corresponding cylindrical cell 210.

[0067] Since the battery module 1000 uses the battery bracket 100 from the above embodiment, it naturally possesses all the beneficial effects of the battery bracket 100. According to this embodiment, the battery module 1000 is designed for cylindrical cells 210 with the positive terminal 211 and negative terminal 212 located at the same end, effectively solving the welding problem of cylindrical cells 210 with positive and negative terminals on the same side in the prior art, and improving the safety of the battery module 1000.

[0068] In some embodiments, please refer to the figure. Figures 7-13 The end plate of the cylindrical cell 210 forms the aforementioned positive terminal 211, and the negative terminal 212 is located in the middle of the positive terminal 211, with the positive terminal 211 and the negative terminal 212 being insulated from each other. The positive terminal 211 is also provided with a first explosion-proof valve 213 and a liquid injection port 214, which are positioned opposite each other on both sides of the negative terminal 212. The other end of the cylindrical cell 210 is also provided with a second explosion-proof valve 215.

[0069] In some embodiments, please refer to Figures 7-13 To collect signals such as temperature and voltage from the battery cell pack 200, the battery module 1000 also includes a data acquisition component 400, which is electrically connected to at least a portion of the busbar components 300. Since the positive terminals 211 and negative terminals 212 of each cylindrical cell 210 in the battery cell pack 200 are located on the same side, the data acquisition component 400 can be entirely mounted on the first bracket 110. To fix the data acquisition component 400, the first bracket 110 is provided with multiple fixing members 140 for connecting and fixing the data acquisition component 400. Both the fixing members 140 and the data acquisition component 400 are located on the outer surface of the first bracket 110 opposite to the second bracket 120.

[0070] This application does not limit the structure of the acquisition component 400. For example, in some embodiments, the acquisition component 400 can be a circuit board. In other embodiments, please refer to the figures. Figure 7 and Figure 11 The acquisition component 400 may include a main wiring harness 410 and a plurality of acquisition terminals 420 electrically connected to the main wiring harness 410. The fastener 140 is connected and fixed to the main wiring harness 410, and the acquisition terminals 420 are electrically connected to the busbar component 300. This effectively simplifies the assembly process of the acquisition component 400 when assembling the battery module 1000, and makes the wiring harness of the acquisition component 400 more effectively fixed on the first bracket 110.

[0071] In some embodiments, to fix the acquisition component 400, a wire trough can be provided on the side of the first bracket 110 away from the second bracket 120, and the main wire harness 410 can be arranged in the wire trough so that the main wire harness 410 does not protrude from the surface of the first bracket 110. In some embodiments, the wire trough can be a recessed groove formed on the outer surface of the first bracket 110. In other embodiments, the wire trough can also be a structure with a recessed space surrounded by the second partition 116 or other protruding structures. This application does not limit the scope of the invention.

[0072] This application does not limit the structure and specific design of the fastener 140; it can be any feasible solution in the prior art. For example, in some embodiments, please refer to... Figure 11 The fixing component 140 may include cable ties and fixing buckles. The main wire harness 410 passes through the through hole formed by the cable ties and fixing buckles, and the acquisition terminal 420 is snapped into the busbar component 300. For example, the acquisition terminal 420 may be provided with rivets, and the busbar component 300 may be provided with rivet holes for riveting the rivets. The acquisition terminal 420 is riveted and fixed to the busbar component 300.

[0073] The battery bracket 100 and battery module 1000 provided by this utility model have at least the following advantages compared with the prior art:

[0074] First, the battery bracket 100 of this utility model has positive electrode welding through holes 112 and negative electrode welding through holes 113, both of which are provided on the first bracket 110. This is compatible with the battery cell assembly 200 of the cylindrical cell 210 with the positive terminal 211 and the negative terminal 212 located on the same side. At the same time, the first partition 114 effectively solves the welding problem of the cylindrical cell 210 with the positive and negative terminals on the same side in the prior art, which is conducive to improving the safety of the battery module 1000.

[0075] Second, the battery bracket 100 of this utility model, by setting two first explosion-proof holes 115 along the second direction on opposite sides of the negative electrode welding through hole 113, and aligning the first explosion-proof valve 213 with one of the cylindrical cells 210 during assembly, allows the first explosion-proof valve 213 of the cylindrical cell 210 to avoid the negative electrode welding area and the positive electrode welding area of ​​the cylindrical cell 210. Simultaneously, since the first bracket 110 has two opposite first explosion-proof holes 115, there are more selectable angles for placing the cylindrical cell 210 when assembling the battery cell assembly 200 and the battery bracket 100. Multiple placement schemes can achieve alignment between the cylindrical cell 210 and the functional structure 111, greatly reducing the difficulty of cell placement.

[0076] Third, the battery bracket 100 provided by this utility model, by setting a second explosion-proof hole 121 and a pressure relief channel 122 on the second bracket 120, can add an exhaust structure to the bottom of the battery module 1000. When the second explosion-proof valve 215 of the cylindrical cell 210 is opened, the gas in the cylindrical cell 210 can effectively flow from the second explosion-proof hole 121 to the pressure relief channel 122, and finally be released through the pressure relief outlet 123 on the side of the second bracket 120, which helps to reduce heat accumulation and improve the safety of the battery module 1000.

[0077] Fourth, in the battery module 1000 provided by this utility model, since the positive terminal 211 and negative terminal 212 of each cylindrical cell 210 of the battery cell group 200 are located on the same side, the acquisition component 400 can be arranged on the first bracket 110 as a whole, and the acquisition component 400 can be effectively fixed by the fixing part 140 on the first bracket 110, which simplifies the assembly process of the acquisition component 400.

[0078] In summary, this utility model effectively solves the technical problem of welding short circuit in the battery cell group 200, and correspondingly designs the positioning structure of the busbar component 300, improves the installation scheme of the acquisition component 400, and adds a heat dissipation structure to the battery bracket 100. It solves the welding problem of cylindrical cells 210 with positive and negative electrodes on the same side in the prior art, simplifies the assembly process of the acquisition component 400, and solves the problems of heat dissipation and secondary pressure relief of the battery cell group 200, greatly improving the safety and reliability of the battery module 1000.

[0079] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A battery holder, characterized in that, For assembling a battery cell assembly comprising multiple cylindrical cells, wherein the positive and negative terminals of the cylindrical cells are located at the same end; the battery support includes: First support; The second bracket is positioned opposite and spaced apart from the first bracket to hold the battery cell assembly. And fasteners, the fasteners connecting the first bracket and the second bracket; The first support has multiple sets of spaced-apart functional structures. Each set of functional structures includes a positive electrode welding through hole, a negative electrode welding through hole, and a first partition. The positive electrode welding through hole and the negative electrode welding through hole are spaced apart. The first partition protrudes from the side of the first support away from the second support and is located between the positive electrode welding through hole and the negative electrode welding through hole. The positive electrode welding through hole is used to expose the positive terminal of the cylindrical battery cell, and the negative electrode welding through hole is used to expose the negative terminal of the cylindrical battery cell. The first partition is used to separate the two busbars connected to the corresponding positive and negative terminals of the cylindrical battery cell.

2. The battery holder as described in claim 1, characterized in that, In one set of the aforementioned functional structures, the positive electrode welding through hole and the negative electrode welding through hole are spaced apart along a first direction, and the first partition is disposed between the positive electrode welding through hole and the negative electrode welding through hole along the first direction; The first bracket also has a plurality of protruding second partitions on the side opposite to the second bracket. A second partition is provided between two adjacent first partitions along the first direction. The second partitions are spaced apart from and / or connected to the first partitions to form a positioning groove for installing the busbar component.

3. The battery holder as described in claim 1, characterized in that, The positive electrode welding through hole and the negative electrode welding through hole are spaced apart along a first direction. The functional structure also includes two through first explosion-proof holes. The two first explosion-proof holes are arranged opposite each other on both sides of the negative electrode welding through hole along a second direction. The first direction and the second direction are perpendicular to each other, and both the first direction and the second direction are perpendicular to the axial direction of the cylindrical battery cell. One of the two first explosion-proof holes is used to expose the first explosion-proof valve of the cylindrical battery cell.

4. The battery holder as described in claim 3, characterized in that, The first explosion-proof hole is an oblong hole, and the dimension of the first explosion-proof hole along the first direction is greater than the dimension of the first explosion-proof hole along the second direction.

5. The battery holder as described in claim 1, characterized in that, The second bracket has multiple through-holes for each of the second explosion-proof holes, which correspond one-to-one with the second explosion-proof valves of the cylindrical battery cell. The second bracket has a pressure relief channel formed on its outer surface away from the first bracket for airflow. The pressure relief channel is connected to the multiple second explosion-proof holes and has multiple pressure relief outlets located on the side of the battery bracket.

6. The battery holder as described in claim 5, characterized in that, The second bracket has a plurality of protruding support protrusions on its outer surface opposite to the first bracket. The plurality of support protrusions are spaced apart and correspond one-to-one with the plurality of second explosion-proof holes. The space between the plurality of support protrusions together constitutes the pressure relief channel. The support protrusions surround the second explosion-proof holes circumferentially. The support protrusions are provided with at least one notch, which connects the pressure relief channel and the second explosion-proof holes.

7. The battery holder as described in claim 6, characterized in that, The second bracket has a protruding rim facing away from the outer surface of the first bracket. The rim surrounds the perimeter of the second bracket. The space between the plurality of supporting protrusions and the space between the supporting protrusions and the rim together constitute the pressure relief channel. The pressure relief outlet passes through the rim. The plurality of pressure relief outlets are spaced apart along the perimeter of the second bracket. The positive electrode welding through hole and the negative electrode welding through hole are spaced apart along a first direction. The rim and the supporting protrusions are flush in the first direction.

8. The battery holder as described in any one of claims 1-7, characterized in that, The first bracket has a plurality of first positioning parts on the side facing the second bracket, and the second bracket has a plurality of second positioning parts on the side facing the first bracket. The first positioning parts are used to position one end of the cylindrical cell where the positive terminal and the negative terminal are located, and the second positioning parts are used to position the end of the cylindrical cell that is away from the positive terminal.

9. A battery module, characterized in that, include: Battery holder as claimed in any one of claims 1-8; A battery cell assembly, comprising multiple cylindrical cells, each cylindrical cell having a positive terminal and a negative terminal located at the same end; and multiple busbars, which are electrically connected to the multiple cylindrical battery cells; The battery cell assembly is sandwiched between the first support and the second support, with both the positive and negative terminals facing the first support. The plurality of cylindrical cells correspond one-to-one with the plurality of functional structures, such that the positive terminal is exposed in the positive electrode welding through hole and the negative terminal is exposed in the negative electrode welding through hole. The first partition can separate the two busbars connected to the positive and negative terminals of the corresponding cylindrical cells.

10. The battery module as described in claim 9, characterized in that, The battery module further includes a data acquisition component, which is electrically connected to at least a portion of the busbar component; the first bracket is provided with a plurality of fasteners for connecting and fixing the data acquisition component, and both the fasteners and the data acquisition component are located on the outer surface of the first bracket opposite to the second bracket.

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