Battery device

Abstract

The utility model discloses a battery device relates to battery structure technical field, and the battery device includes box and battery module, the box encloses the installation space with the opening of top portion, and the battery module sets up in the installation space, and the battery module includes a plurality of vertical stacking setting's electric core subassembly, each electric core subassembly includes mounting bracket and a plurality of blade electric core, and the mounting bracket includes bottom plate and sets up two baffle of bottom plate's top portion and along first horizontal direction interval distribution, and each blade electric core extends along second horizontal direction, and a plurality of blade electric core supports on the bottom plate and sequentially arranges between two baffles along first horizontal direction, the top portion of two baffles all protrude on the top portion of each blade electric core upward, and the side of baffle away from blade electric core is provided with a plurality of reinforcing ribs, and the number of reinforcing rib on the vertical any adjacent two baffles is identical and one -to -one detachable connection. The battery device structure stability of the utility model is good, and assembly is simpler and faster.

Description

Technical Field

[0001] This utility model relates to the field of battery structure technology, and in particular to a battery device. Background Technology

[0002] With the continuous advancement of energy and technology, the energy storage industry has experienced tremendous growth. Lithium-ion batteries, as an energy storage medium, are currently being researched and developed by major manufacturers worldwide. There are many types of lithium-ion batteries, which can be categorized by shape into cylindrical, prismatic, and pouch cells, among others. However, some battery cells still face a series of challenges in application, including insufficient safety and limited energy density.

[0003] In this context, the emergence of blade-shaped battery cells has solved this problem to some extent and is gradually becoming the mainstream battery in the automotive industry. Firstly, blade-shaped battery cells offer high safety, performing excellently in nail penetration tests with no open flame or smoke, effectively preventing dangerous situations such as thermal runaway. Furthermore, their elongated structure creates a longer distance between the positive and negative electrodes, reducing the probability of internal short circuits. Secondly, they improve space utilization, allowing the battery pack to accommodate more batteries, thereby increasing energy density and driving range. Thirdly, blade batteries support fast charging, significantly shortening charging time and improving the user experience.

[0004] However, existing blade battery cells are arranged in a single layer within a housing during assembly. But for engineering vehicles, due to the special application scenarios, a large number of blade battery cells are required. They are mostly stacked and placed in the housing, with the housing itself limiting the position of the blade battery cells. This not only results in an unstable structure but also a complex assembly process and slow assembly speed. Utility Model Content

[0005] The main purpose of this utility model is to propose a battery device that aims to solve the technical problems of complex assembly process and slow assembly speed of existing battery devices.

[0006] To achieve the above objectives, this utility model proposes a battery device comprising:

[0007] A housing that encloses an installation space with an opening at the top;

[0008] A battery module is disposed within the installation space. The battery module includes multiple cell assemblies stacked vertically and connected in series. Each cell assembly includes a mounting frame and multiple interconnected blade cells. The mounting frame includes a base plate and two baffles disposed on the top of the base plate and spaced apart along a first horizontal direction. Each blade cell extends along a second horizontal direction, which is perpendicular to the first horizontal direction. The multiple blade cells are supported on the base plate and arranged sequentially between the two baffles along the first horizontal direction.

[0009] In each of the battery cell assemblies, the tops of the two baffles protrude upwards from the tops of each blade battery cell, and the side of the baffle away from the blade battery cell is provided with a plurality of reinforcing ribs; along the vertical direction, the number of reinforcing ribs on any two adjacent baffles is the same and they are detachably connected in a one-to-one correspondence.

[0010] In one embodiment, each of the reinforcing ribs includes a transition section, an upper connecting section connected to the top of the transition section, and a lower connecting section connected to the bottom of the transition section. The upper connecting section is disposed near the top of the baffle, and the lower connecting section is disposed near the bottom of the baffle. Both the upper connecting section and the lower connecting section extend along the second horizontal direction.

[0011] The two reinforcing ribs connected vertically are arranged symmetrically, and the upper connecting section of one of the reinforcing ribs and the lower connecting section of the other reinforcing rib located above it are fastened by bolts.

[0012] In one embodiment, in each of the battery cell assemblies, each of the blade battery cells has tabs at both ends along the second horizontal direction, and the mounting bracket further includes two end plates, which abut against both sides of each of the blade battery cells along the second horizontal direction. The end plates and tabs on the same side are disposed separately, and the two ends of each end plate along the first horizontal direction are respectively connected to the two baffles.

[0013] In one embodiment, an insulating plate is provided between each of the battery cell assemblies and the adjacent blade battery cell, and between the end of each blade battery cell along the second horizontal direction and the end plate disposed on the same side therewith.

[0014] In one embodiment, in each of the battery cell assemblies, each of the baffles is provided with a protrusion protruding from the blade battery cell, and a plurality of pressure plates are connected between two of the protrusions, and the plurality of pressure plates are spaced apart along the second horizontal direction and abut against the top of each of the blade battery cells.

[0015] In one embodiment, an insulating sheet is further disposed between any two adjacent blade cells in each of the cell assemblies.

[0016] In one embodiment, in each of the battery cell assemblies, a buffer pad is further provided on the top of the base plate, and each of the blade battery cells is supported on the buffer pad.

[0017] In one embodiment, in each of the battery cell assemblies, a weight-reducing hole is further provided on each of the baffles at a position between any two adjacent reinforcing ribs.

[0018] In one embodiment, the number of battery modules is multiple, and the installation space includes multiple installation areas spaced apart along the first horizontal direction. The number of installation areas is consistent with the number of battery modules and corresponds one-to-one. Each battery module is installed in its corresponding installation area.

[0019] In one embodiment, the bottom wall of the installation space is provided with a plurality of limiting rods spaced apart along the first horizontal direction, each of the limiting rods extending along the second horizontal direction, and an installation area is formed between two adjacent limiting rods; the two baffles at the bottom of the battery module respectively abut against the corresponding two limiting rods.

[0020] This utility model discloses a battery device by setting a battery module inside a housing. The battery module includes multiple stacked cell assemblies. Each cell assembly includes multiple mounting brackets and multiple blade cells. The mounting brackets include a base plate and two baffles. The multiple blade cells are arranged sequentially between the two baffles. The base plate supports the multiple blade cells, and the two baffles protect the blade cells from tilting. The top of each baffle protrudes upward from the top of the blade cell. When stacked, the upper and lower baffles on the same side abut against each other, so that the upper base plate does not contact or collide with the blade cell below it, which can effectively protect the blade cell. In addition, multiple reinforcing ribs are provided on the side of the baffle away from the blade cell, and the number of reinforcing ribs on the upper and lower adjacent baffles is the same and they are arranged one-to-one. Any two upper and lower adjacent reinforcing ribs can be detachably connected to improve the relative stability of the two upper and lower adjacent mounting brackets, resulting in good structural stability. During assembly, the individual cell components are assembled first, then the cell components are stacked and assembled into a battery module, and finally the battery module is assembled into the housing. This streamlined assembly process makes assembly simpler and faster. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a battery device provided in an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of a battery device provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a battery cell assembly provided in an embodiment of the present invention;

[0025] Figure 4 An exploded view of a battery cell assembly provided in an embodiment of this utility model;

[0026] Figure 5 This is a partial structural schematic diagram of a battery cell assembly provided in an embodiment of the present invention.

[0027] Explanation of icon numbers:

[0028] 100. Battery assembly; 1. Housing; 11. Installation space; 111. Installation area; 112. Limiting rod; 12. Cover plate; 2. Battery module; 3. Cell assembly; 31. Mounting bracket; 311. Base plate; 312. Baffle; 3121. Extension plate; 313. End plate; 314. Pressure plate; 315. Reinforcing rib; 3151. Transition section; 3152. Upper connecting section; 3153. Lower connecting section; 316. Insulating plate; 317. Insulating sheet; 318. Buffer pad; 319. Weight reduction hole; 32. Blade cell.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a battery device 100.

[0034] Please see Figures 1-3 In one embodiment of this utility model, the battery device 100 includes a housing 1 and a battery module 2; the housing 1 encloses an installation space 11 with an opening at the top, and the battery module 2 is disposed within the installation space 11. The battery module 2 includes a plurality of vertically stacked cell assemblies 3, and the plurality of cell assemblies 3 are connected in series; each cell assembly 3 includes a mounting frame 31 and a plurality of interconnected blade cells 32, and the mounting frame 31 includes a base plate 311 and two baffles 312 disposed on the top of the base plate 311 and spaced apart along a first horizontal direction. Each blade cell 32 extends along a second horizontal direction, which is perpendicular to the first horizontal direction. Multiple blade cells 32 are supported on a base plate 311 and arranged sequentially between two baffles 312 along the first horizontal direction. In each cell assembly 3, the tops of the two baffles 312 protrude upwards from the tops of each blade cell 32. Multiple reinforcing ribs 315 are provided on the side of the baffles 312 away from the blade cells 32. Vertically, the number of reinforcing ribs 315 on any two adjacent baffles 312 is the same and they are detachably connected in a one-to-one correspondence.

[0035] The battery device 100 of this utility model includes a battery module 2 installed inside a housing 1. The battery module 2 includes multiple stacked battery cell assemblies 3. Each battery cell assembly 3 includes multiple mounting brackets 31 and multiple blade cells 32. The mounting bracket 31 includes a base plate 311 and two baffles 312. The multiple blade cells 32 are arranged sequentially between the two baffles 312. The base plate 311 supports the multiple blade cells 32, and the two baffles 312 protect the blade cells 32 from tilting, etc. The top of each baffle 312 protrudes upward from the blade cell. At the top of the 32, during stacking, the upper and lower baffles 312 on the same side abut against each other, preventing the upper base plate 311 from contacting or colliding with the blade cell 32 below, effectively protecting the blade cell 32. Furthermore, multiple reinforcing ribs 315 are provided on the side of the baffle 312 away from the blade cell 32, with the number of reinforcing ribs 315 on adjacent upper and lower baffles 312 being identical and corresponding one-to-one. Any two adjacent upper and lower reinforcing ribs 315 can be detachably connected to improve the relative stability of the two adjacent mounting brackets 31, resulting in good structural stability. During assembly, each cell assembly 3 is assembled first, then the cell assemblies 3 are stacked and assembled into a battery module 2, and finally the battery module 2 is assembled into the housing 1. This streamlined assembly process makes assembly simpler and faster.

[0036] It should be noted that, as Figure 3 As shown, the first horizontal direction is the left-right direction, the second horizontal direction is the front-back direction, and the vertical direction is the up-down direction.

[0037] Combination Figure 1 and Figure 2 Furthermore, a cover plate 12 for closing the opening can be detachably connected to the top of the housing 1.

[0038] Please see Figure 4 In one embodiment, each reinforcing rib 315 includes a transition section 3151, an upper connecting section 3152 connected to the top of the transition section 3151, and a lower connecting section 3153 connected to the bottom of the transition section 3151. The upper connecting section 3152 is disposed near the top of the baffle 312, and the lower connecting section 3153 is disposed near the bottom of the baffle 312. Both the upper connecting section 3152 and the lower connecting section 3153 extend along a second horizontal direction. Vertically, two reinforcing ribs 315 connected to each other are symmetrically arranged, and the upper connecting section 3152 of one reinforcing rib 315 and the lower connecting section 3153 of the other reinforcing rib 315 located above it are fastened by bolts.

[0039] The reinforcing rib 315 includes an upper connecting section 3152, a lower connecting section 3153, and a transition section 3151. The upper connecting section 3152 is located near the top of the baffle 312, and the lower connecting section 3153 is located near the bottom, forming two stress points at the top and bottom, making the connection more balanced. The transition section 3151 plays a supporting and force-transmitting role, which helps to distribute the external force evenly to the entire baffle 312 structure and improve the overall load-bearing capacity.

[0040] Two reinforcing ribs 315 located on the same side and adjacent to each other are symmetrically arranged, and the upper connecting section 3152 of the lower reinforcing rib 315 is connected to the lower connecting section 3153 of the upper reinforcing rib 315 by bolts. The two adjacent reinforcing ribs 315 are detachably connected by bolt fastening, which facilitates installation, disassembly and maintenance and improves assembly efficiency.

[0041] In another embodiment, each reinforcing rib 315 may also include multiple upper connecting segments 3152 and multiple lower connecting segments 3153. The specific number can be determined according to actual needs and is not limited here.

[0042] Please continue reading. Figure 4 In one embodiment, in each cell assembly 3, each blade cell 32 has tabs at both ends along the second horizontal direction. The mounting bracket 31 also includes two end plates 313, which abut against both sides of each blade cell 32 along the second horizontal direction. The end plates 313 and tabs on the same side are avoided. Each end plate 313 is connected to two baffles 312 at both ends along the first horizontal direction.

[0043] Understandably, by setting two end plates 313, which abut against the two sides of the blade cell 32 along the second horizontal direction, the blade cell 32 is limited and supported, preventing it from shifting or loosening during transportation or use. The end plates 313 and the baffles 312 form a semi-closed frame structure, which enhances the enclosure and deformation resistance of the mounting bracket 31 for the blade cell 32. Furthermore, the tabs and end plates 313 are set apart to facilitate subsequent welding of the tabs to the aluminum busbar.

[0044] Furthermore, the bottoms of the two end plates 313 abut against the base plate 311.

[0045] Please see Figure 4 Furthermore, the baffle 312 is provided with extension plates 3121 at both ends along the second horizontal direction. Each extension plate 3121 extends along the first horizontal direction and has a connecting hole for connecting to an external welding fixture. Connecting to the welding fixture facilitates the welding of the electrode tabs and aluminum busbars. The welding fixture is a prior art welding fixture and will not be described in detail here.

[0046] In one embodiment, in each cell assembly 3, an insulating plate 316 is provided between each baffle 312 and the adjacent blade cell 32, and between the end of each blade cell 32 along the second horizontal direction and the end plate 313 disposed on the same side therewith.

[0047] Understandably, by setting the insulating plate 316, it is possible to effectively prevent the blade cell 32 from short-circuiting when it comes into contact with the baffle 312 or the end plate 313. In addition, the insulating plate 316 also has a certain buffering effect, which can prevent the baffle 312 and the end plate 313 from pressing tightly against the surface of the blade cell 32, reducing the occurrence of scratches on the blade cell 32 during installation. Furthermore, during use, such as when a vehicle is in motion, it can further reduce shock and lower the probability of damage to the blade cell 32.

[0048] Specifically, the insulating board 316 can be made of existing materials such as PC film, EVA cotton, and epoxy board.

[0049] In one embodiment, in each cell assembly 3, each baffle 312 includes a protrusion protruding from the blade cell 32, and a plurality of pressure plates 314 are connected between two protrusions. The plurality of pressure plates 314 are spaced apart along a second horizontal direction and abut against the top of each blade cell 32. It can be understood that by providing a plurality of pressure plates 314, the blade cell 32 can be prevented from shifting due to vibration, impact, etc. during transportation or use, thereby further improving the stability of the blade cell 32.

[0050] Please see Figure 5 In one embodiment, an insulating sheet 317 is further provided between any two adjacent blade cells 32 in each cell assembly 3. Understandably, the insulating sheet 317 is attached to the side of the blade cell 32 to achieve insulation between the two blade cells 32 and prevent short circuits. Specifically, multiple insulating sheets 317 may be provided between any two adjacent blade cells 32, and the multiple insulating sheets 317 are spaced apart along a second horizontal direction. The insulating sheet 317 may be a PC film as used in the prior art.

[0051] Please continue reading. Figure 4 In one embodiment, in each cell assembly 3, a buffer pad 318 is further provided on the top of the base plate 311, and each blade cell 32 is supported on the buffer pad 318. Understandably, by providing the buffer pad 318, physical damage to the blade cell 32 caused by bumps or knocks to the bottom of the base plate 311 and the blade cell 32 can be avoided. Especially during use, it can reduce shock and buffer the blade cell 32, resulting in better reliability.

[0052] Specifically, the buffer pad 318 can be made of silicone pads, sponge pads, etc., which are existing technologies.

[0053] In one embodiment, in each cell assembly 3, a weight-reducing hole 319 is also provided on each baffle 312 at a position between any two adjacent reinforcing ribs 315. By providing the weight-reducing hole 319, the weight of each cell assembly 3 is further reduced, which facilitates assembly and handling and achieves the purpose of lightweighting.

[0054] Please continue reading. Figures 1-2 In one embodiment, there are multiple battery modules 2, and the installation space 11 includes multiple installation areas 111 spaced apart along a first horizontal direction. The number of installation areas 111 is the same as the number of battery modules 2 and they correspond one-to-one. Each battery module 2 is installed in the corresponding installation area 111.

[0055] Understandably, the installation space 11 includes multiple installation areas 111, each of which can install a battery module 2. The structure is reasonable and compact, and it is also conducive to flexibly combining the number of battery modules 2 according to different application requirements, adapting to various voltage platforms and capacity configurations.

[0056] In this embodiment, there are two battery modules 2, one of which includes three battery cell assemblies 3 and the other includes two battery cell assemblies 3.

[0057] In one embodiment, the bottom wall of the installation space 11 is provided with a plurality of limiting rods 112 spaced apart along a first horizontal direction, each limiting rod 112 extending along a second horizontal direction, and an installation area 111 is formed between two adjacent limiting rods 112; the two baffles 312 at the bottom of the battery module 2 respectively abut against the corresponding two limiting rods 112.

[0058] By setting multiple limiting rods 112 on the bottom wall of the installation space 11, the battery module 2 is positioned between two limiting rods 112, and the two bottom baffles 312 abut against the two limiting rods 112. This effectively prevents the battery module 2 from shifting or shaking during transportation or use, improves the overall structural stability, and allows for precise positioning of the battery module 2 during installation, thus improving assembly efficiency.

[0059] Specifically, the reinforcing rib 315 on the baffle 312 that abuts against the limiting rod 112 is also fastened to the limiting rod 112 by bolts.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery device, characterized in that, include: A housing that encloses an installation space with an opening at the top; A battery module is disposed within the installation space. The battery module includes multiple cell assemblies stacked vertically and connected in series. Each cell assembly includes a mounting frame and multiple interconnected blade cells. The mounting frame includes a base plate and two baffles disposed on the top of the base plate and spaced apart along a first horizontal direction. Each blade cell extends along a second horizontal direction, which is perpendicular to the first horizontal direction. The multiple blade cells are supported on the base plate and arranged sequentially between the two baffles along the first horizontal direction. In each of the battery cell assemblies, the tops of the two baffles protrude upwards from the tops of each blade battery cell, and the side of the baffle away from the blade battery cell is provided with a plurality of reinforcing ribs; along the vertical direction, the number of reinforcing ribs on any two adjacent baffles is the same and they are detachably connected in a one-to-one correspondence.

2. The battery device as claimed in claim 1, characterized in that, Each of the reinforcing ribs includes a transition section, an upper connecting section connected to the top of the transition section, and a lower connecting section connected to the bottom of the transition section. The upper connecting section is located near the top of the baffle, and the lower connecting section is located near the bottom of the baffle. Both the upper connecting section and the lower connecting section extend along the second horizontal direction. Along the vertical direction, the two reinforcing ribs that are connected to each other are arranged symmetrically, and the upper connecting section of one of the reinforcing ribs and the lower connecting section of the other reinforcing rib located above it are fastened by bolts.

3. The battery device as claimed in claim 1, characterized in that, In each of the battery cell assemblies, each of the blade battery cells has tabs at both ends along the second horizontal direction. The mounting bracket also includes two end plates, which abut against both sides of each blade battery cell along the second horizontal direction. The end plates and tabs on the same side are arranged to avoid each other. Each end plate is connected to two baffles at both ends along the first horizontal direction.

4. The battery device as claimed in claim 3, characterized in that, In each of the battery cell assemblies, an insulating plate is provided between each of the baffles and the adjacent blade battery cell, and between the end of each blade battery cell along the second horizontal direction and the end plate disposed on the same side therewith.

5. The battery device as claimed in claim 1, characterized in that, In each of the battery cell assemblies, each of the baffles is provided with a protrusion that protrudes from the blade battery cell, and a plurality of pressure plates are connected between two of the protrusions. The plurality of pressure plates are spaced apart along the second horizontal direction and abut against the top of each of the blade battery cells.

6. The battery device according to any one of claims 1 to 5, characterized in that, In each of the aforementioned cell assemblies, an insulating sheet is further provided between any two adjacent blade cells.

7. The battery device according to any one of claims 1 to 5, characterized in that, In each of the battery cell assemblies, a buffer pad is also provided on the top of the base plate, and each of the blade battery cells is supported on the buffer pad.

8. The battery device according to any one of claims 1 to 5, characterized in that, In each of the battery cell assemblies, a weight reduction hole is also provided on each of the baffles at a position between any two adjacent reinforcing ribs.

9. The battery device according to any one of claims 1 to 5, characterized in that, The number of battery modules is multiple, and the installation space includes multiple installation areas spaced apart along the first horizontal direction. The number of installation areas is the same as the number of battery modules and they correspond one-to-one. Each battery module is installed in its corresponding installation area.

10. The battery device as claimed in claim 9, characterized in that, The bottom wall of the installation space is provided with a plurality of limiting rods spaced apart along the first horizontal direction, and each limiting rod extends along the second horizontal direction, forming an installation area between two adjacent limiting rods; the two baffles at the bottom of the battery module respectively abut against the corresponding two limiting rods.

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