A battery cell support capable of improving battery cell swelling

Abstract

The application discloses a battery cell support capable of improving battery cell expansion, and relates to the technical field of battery cell mounting racks. The battery cell support comprises outer supports, the outer supports are provided in pairs, a plurality of inner supports are clamped on the sides of the pair of outer supports close to each other, the first ventilation pipe and the second ventilation pipe are clamped close to each other through the arrangement of a self-penetrating mechanism, the rubber sealing ring is arranged in a folded layer shape, a circular hole is arranged at the center of the rubber sealing ring, the inner connecting pipe can penetrate through the rubber sealing ring, the rubber sealing ring wraps the outer wall of the inner connecting pipe to form a sealing layer, the ring sleeve can increase the sealing performance of the outer portions of the two pipes, air leakage of the butt joint part is avoided, the arrangement of the vertical pipe and the row hole makes the gaps among all the battery cells in the battery pack be communicated, and finally, an external ventilation system is used; when the air temperature is too high or too low, hot air is discharged to uniformly radiate the battery cells, or warm air is filled into the battery cells to uniformly keep the battery cells warm, so that the battery pack can continuously and effectively work under extreme weather.

Description

Technical Field

[0001] This invention relates to the field of battery cell mounting bracket technology, specifically to a battery cell support that can improve battery cell expansion. Background Technology

[0002] Cell support structures can connect multiple cells in series or in parallel to form a battery module. During the charging and discharging process, the migration of lithium ions between the positive and negative electrodes causes the volume change of the negative electrode material to be greater than that of the positive electrode material, which in turn causes changes in the cell thickness. In addition, the battery will produce gas when used at different temperatures, which will also cause expansion. In particular, large single cells will generally experience slight expansion after being used for more than a year.

[0003] In existing technologies, extreme weather conditions, such as low temperatures, can reduce the battery's energy storage capacity and charging efficiency, as well as increase the internal resistance of the electrodes, thereby reducing the charging and discharging efficiency of the battery cell. High temperatures can cause changes in the properties of the materials inside the battery cell, such as electrolyte evaporation and electrode material expansion, thus affecting the energy storage capacity and lifespan of the battery cell. Both of these conditions can lead to insufficient power supply to the battery pack, affecting the charging and discharging efficiency of the battery cell.

[0004] In addition, to mitigate the expansion of large individual battery cells, a casing is typically welded onto the outside of the cell support after assembly to increase the strength of the support and reduce the deformation of the large individual cells. However, for battery packs that have already experienced slight expansion, if it is necessary to change the voltage or replace individual cells, additional auxiliary tools such as straps are required to reassemble the cells and supports. The reassembly process is time-consuming and labor-intensive, and it is also easy to misalign or damage the support, increasing maintenance costs and reducing modification efficiency.

[0005] In view of this, the present invention proposes a cell support that can improve cell expansion in order to make up for and improve the shortcomings of the prior art. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a cell support that can increase environmental adaptability, improve modification efficiency, reduce maintenance costs, extend the service life of the support, and ensure the effectiveness of device exhaust heat dissipation and intake heat preservation, thereby improving cell expansion and solving the corresponding technical problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a battery cell support that can improve cell expansion, comprising an outer support, wherein a pair of outer supports are provided, and a plurality of inner supports are snapped onto the side of the outer supports that are close to each other, and further comprising:

[0008] The self-connecting mechanism is used to connect the gaps between the battery cells to assist airflow.

[0009] The positioning and releasing mechanism is used for positioning the battery cell between the outer support and the inner support for releasing.

[0010] As preferred, the self-penetrating mechanism comprises a pair of first and second ventilation pipes, which are fixedly connected to the top of two different inner supports respectively, and the bottom of each of the first and second ventilation pipes is fixedly connected with a vertical pipe, and the outer wall of each of the vertical pipes is fixedly connected to the top of the inner support.

[0011] As preferred, the self-penetrating mechanism further comprises a plurality of ring sleeves, the inner wall of each of the ring sleeves is fixedly connected to one side of the first ventilation pipe close to the second ventilation pipe, the inner wall of the one side of the first ventilation pipe close to the second ventilation pipe is fixedly connected with a flow guide joint, the middle part of each of the flow guide joints is fixedly connected with an inner connecting pipe, the inner wall of the one side of the first ventilation pipe away from the flow guide joint is fixedly connected with a rubber sealing ring, the inner wall of the one side of the second ventilation pipe close to the first ventilation pipe is also fixedly connected with a rubber sealing ring, the outer wall of each of the inner connecting pipes is clamped at the center of the rubber sealing ring, and the one side of the second ventilation pipe away from the first ventilation pipe is fixedly connected with a ventilation pipe joint.

[0012] As preferred, the self-penetrating mechanism further comprises a plurality of baffles fixedly connected to the middle part of the plurality of inner supports, and the middle part of each of the baffles is provided with a row hole.

[0013] As preferred, the positioning and releasing mechanism comprises a positioning column rotatably connected to one of the outer supports, the positioning column is provided with a plurality of positioning columns equidistantly distributed around the four peripheral edges of the outer support, one side of each of the positioning columns is fixedly connected with a clamping groove seat, the other side of each of the positioning columns is provided with a threaded groove, and the one side of the positioning column away from the clamping groove seat is threadedly connected to the inner wall of the other outer support.

[0014] As preferred, the positioning and releasing mechanism further comprises a pair of cross plates fixedly connected to the middle part of the pair of outer supports, the center of each of the pair of cross plates is rotatably connected with a threaded column, one side of each of the threaded columns is fixedly connected with a pressing disc, the other side of each of the threaded columns is fixedly connected with a clamping groove seat, and the outer wall of each of the pair of clamping groove seats is fixedly connected with an anti-falling pad.

[0015] As preferred, the positioning and releasing mechanism further comprises a pair of half screw rings fixedly connected to the upper and lower sides of the outer support and the inner support, one half screw ring is arranged on each of the upper and lower sides of the outer support, and a pair of half screw rings are arranged on each of the upper and lower sides of the inner support, and the outer wall of the two half screw rings is threadedly connected with a nut.

[0016] As preferred, the opening direction of the half screw ring on the outer support is towards the inner support, and the opening direction of the half screw ring on the inner support is towards the two sides.

[0017] Preferably, the rubber sealing ring is arranged in a folded layer shape, and a circular hole is formed in the center of the rubber sealing ring.

[0018] Preferably, a groove is formed in the position corresponding to the clamping groove seat of the four peripheral edges of the outer support.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1. When the two inner supports are butted against each other, the first ventilation pipe and the second ventilation pipe are close to each other and are clamped by the self-penetrating mechanism. Since the rubber sealing ring is arranged in a folded layer shape and a circular hole is formed in the center of the rubber sealing ring, the inner connecting pipe can penetrate the rubber sealing ring, and the rubber sealing ring forms a sealing layer around the outer wall of the inner connecting pipe. The ring sleeve can increase the sealing performance of the outer part of the two pipes, avoid air leakage in the butted part, and cooperate with the vertical pipe and the row of holes to make the gaps between all the battery cells in the battery pack be connected by the first ventilation pipe and the second ventilation pipe, forming a series of air flow channels. Finally, the external ventilation system is used to exhaust hot air to uniformly cool the battery cells or to pour in warm air to uniformly heat the battery cells when the air temperature is too high or too low, so as to ensure that the battery pack can work continuously and effectively in extreme weather, avoid the situation of insufficient power supply, and increase the environmental adaptability.

[0021] 2. During assembly, the battery cells and the inner supports are placed in the outer support in sequence by the positioning winding and unwinding mechanism. The positioning column penetrating the outer support and the inner support can prevent the two supports from deviating when they are clamped, and avoid misalignment. In cooperation with the support of the baffle between the two battery cells, the middle part of all the battery cells is easily bulged and is extruded and contracted, effectively improving the expansion of the battery cells, making the battery cells that have been slightly bulged more easily contract and reset during secondary assembly, improving the efficiency of the modification, and reducing the maintenance cost without using additional auxiliary tools such as belts.

[0022] 3. The baffle not only increases the support strength of the inner support, but also extrudes and contracts the middle part of the battery cell in cooperation with the extrusion disc, disperses the stress on each part of the inner support, and reduces the local stress intensity of the support, thereby prolonging the service life of the support. In cooperation with the row of holes, the gap between the two battery cells is penetrated, the vertical pipe is connected with the bottom gap, and the effectiveness of the device in exhausting and cooling and pouring and heating is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the application.

[0024] Figure 2 It is a schematic diagram of the structure of the extrusion disc. Figure 1 It is a schematic diagram of the structure of the extrusion disc.

[0025] Figure 3 It is a schematic diagram of the extrusion disc structure.

[0026] Figure 4 Schematic diagram of the semi-spiral structure shown in the present application;

[0027] Figure 5 Schematic diagram of the positioning column structure shown in the present application;

[0028] Figure 6 Schematic diagram of the threaded column structure shown in the present application;

[0029] Figure 7 Schematic diagram of the hole arrangement structure shown in the present application;

[0030] Figure 8 Schematic diagram of the structure shown in the present application; Figure 7 enlarged structure at B in the present application;

[0031] Figure 9 Schematic diagram of the baffle structure shown in the present application;

[0032] Figure 10 Schematic diagram of the rubber seal structure shown in the present application;

[0033] Figure 11 Schematic diagram of the inner connecting pipe structure shown in the present application.

[0034] The figure reference is:

[0035] 1, outer support; 2, inner support;

[0036] 3, self-penetrating mechanism; 31, first ventilation pipe; 32, ring sleeve; 33, second ventilation pipe; 34, baffle; 35, vertical pipe; 36, hole arrangement; 37, inner connecting pipe; 38, flow guide joint; 39, rubber seal; 310, pipe joint;

[0037] 4, positioning winding mechanism; 41, clamping groove seat; 42, positioning column; 43, cross plate; 44, extrusion disc; 45, threaded column; 46, nut; 47, semi-spiral ring; 48, threaded groove; 49, anti-dropping pad. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] Embodiments of the present application:

[0040] Please refer to Figures 1 to 11As shown, a kind of battery cell support that can improve battery cell expansion, including outer support 1, a pair of outer support 1 is provided with a pair of inner support 2, still including:

[0041] From the through mechanism 3, for connecting the gap between battery cell to assist air flow;

[0042] Positioning pay-off mechanism 4, for the battery cell is positioned between outer support 1 and inner support 2 pay-off;

[0043] From the through mechanism 3 includes a pair of first vent pipe 31 and second vent pipe 33, first vent pipe 31 and second vent pipe 33 are fixedly connected to the top of two different inner support 2, the bottom of first vent pipe 31 and second vent pipe 33 is fixedly connected with vertical pipe 35, the outer wall of a plurality of vertical pipe 35 is fixedly connected to the top of inner support 2;

[0044] From the through mechanism 3 also includes a plurality of ring 32, the inner wall of ring 32 is fixedly connected to the side of first vent pipe 31 close to second vent pipe 33, the inner wall of the side of first vent pipe 31 close to second vent pipe 33 is fixedly connected with flow joint 38, the middle part of a plurality of flow joint 38 is fixedly connected with inner pipe 37, the inner wall of the side of first vent pipe 31 away from flow joint 38 is fixedly connected with rubber seal ring 39, the inner wall of the side of second vent pipe 33 close to first vent pipe 31 is also fixedly connected with rubber seal ring 39, the outer wall of a plurality of inner pipe 37 is clamped at the center of rubber seal ring 39, the side of second vent pipe 33 away from first vent pipe 31 is fixedly connected with vent pipe joint 310;

[0045] From the through mechanism 3 also includes a plurality of baffle plates 34 fixedly connected to the middle part of a plurality of inner support 2, the middle part of a plurality of baffle plates 34 is provided with vent hole 36;

[0046] Rubber seal ring 39 is arranged in a folded layer, and a circular hole is formed in the center of rubber seal ring 39;

[0047] The periphery of outer support 1 is provided with recess corresponding to the position of clamping groove seat 41;

[0048] Among them: vent hole 36 can connect the gap between two battery cells, for exhaust heat dissipation and air supply heat preservation.

[0049] The effects achieved by this embodiment are as follows: In the prior art, in extreme weather, it can cause the battery pack to be insufficiently powered, affecting the charging and discharging efficiency of the battery cell. Compared with the prior art, by implementing this embodiment, the self-penetrating mechanism 3 can be connected by the first ventilation pipe 31 and the second ventilation pipe 33, and the vertical pipe 35 and the row hole 36 are arranged to connect the gaps between all the battery cells in the battery pack, form a wind channel, and discharge hot air to achieve uniform heat dissipation of the battery cell, or pour in warm air to uniformly heat the battery cell.

[0050] Further embodiments:

[0051] Please refer to Figure 1 、 Figures 3 to 6 , the positioning mechanism 4 includes a positioning column 42 rotatably connected to an outer support 1, the positioning column 42 is provided with a plurality of and equidistantly distributed around the edge of the outer support 1, a plurality of positioning columns 42 are fixedly connected with a clamping groove seat 41 on one side, and the other side of the positioning column 42 is provided with a threaded groove 48, and the side of the positioning column 42 away from the clamping groove seat 41 is threadedly connected to the inner wall of the other outer support 1;

[0052] The positioning mechanism 4 further includes a cross plate 43 fixedly connected to the middle of a pair of outer supports 1, a threaded column 45 rotatably connected to the center of a pair of cross plates 43, a pressing disc 44 fixedly connected to one side of the threaded column 45, a clamping groove seat 41 fixedly connected to the other side of the threaded column 45, and a anti-loosening pad 49 fixedly connected to the outer wall of a pair of clamping groove seats 41;

[0053] The positioning mechanism 4 further includes a half screw ring 47 fixedly connected to the upper and lower sides of the outer support 1 and the inner support 2, one half screw ring 47 is arranged on the upper and lower sides of the outer support 1, a pair of half screw rings 47 are arranged on the upper and lower sides of the inner support 2, and the outer walls of the two half screw rings 47 are threadedly connected with a nut 46;

[0054] The opening direction of the half screw ring 47 on the outer support 1 faces the inner support 2, and the opening direction of the half screw ring 47 on the inner support 2 faces the two sides;

[0055] Among them: the baffle 34 not only increases the supporting strength of the inner support 2, but also can cooperate with the pressing disc 44 to extrude and shrink the middle part of the battery cell.

[0056] The effects achieved by the embodiment are as follows: in the prior art, for a battery pack that has slightly expanded, if it is necessary to change the voltage or replace the single battery cell, additional auxiliary tools such as a belt are required to reassemble the battery cell and the bracket, the reassembly process is time-consuming and laborious, and the bracket is prone to misplacement and damage, thereby increasing the maintenance cost and reducing the modification efficiency. Compared with the prior art, by implementing the embodiment, the positioning retracting and releasing mechanism 4 is provided, the positioning column 42 penetrates through the outer bracket 1 and the inner bracket 2, and the outer bracket 1 and the inner bracket 2 are not prone to deviation when being clamped, misplacement is avoided, the baffle 34 between the two battery cells is supported, the middle part of the battery cell that is prone to bulging is squeezed and shrunk, the battery cell expansion is effectively improved, the battery cell that has slightly bulged is more easily shrunk and reset during secondary assembly, and the modification efficiency is improved.

[0057] The complete use steps and working principle of the above embodiment are as follows:

[0058] In the initial state, the outer bracket 1 and the inner bracket 2 are in a state of mutual separation, the inner bracket 2 and the positioning column 42 are in a state of mutual separation, and the first ventilation pipe 31 and the second ventilation pipe 33 are in a state of mutual separation.

[0059] During assembly, the single battery cell is first attached to the inner wall of one outer bracket 1, the inner bracket 2 is then clamped and attached to the other side of the battery cell by penetrating through the positioning column 42, and then the battery cell and the inner bracket 2 are continuously added, and the outer bracket 1 is clamped and attached to the other side of the battery cell by penetrating through the positioning column 42. The outer bracket 1 is then shrunk and combined by rotating the clamping groove seat 41 through the threaded groove 48, the outer bracket 1 and the inner bracket 2 are not prone to deviation when being clamped by penetrating through the positioning column 42, and a pair of outer brackets 1 and inner brackets 2 are fastened to each other by sequentially rotating the clamping groove seat 41, so that the battery cell assembled in the middle is tightly clamped, a stable battery pack is formed, and then the threaded column 45 in the middle of a pair of outer brackets 1 is continuously rotated, so that the squeezing disc 44 squeezes the battery cell from both sides, the baffle 34 between the two battery cells is supported, the middle part of all battery cells that are prone to bulging is squeezed and shrunk, the battery cell expansion is effectively improved, the battery cell that has slightly bulged is more easily shrunk and reset during secondary assembly, no additional auxiliary tools such as a belt are required, the maintenance cost is reduced, and the recesses formed in the four peripheral edges of the outer bracket 1 make the positioning column 42 hidden in the assembled outer bracket 1 and inner bracket 2, and the flat periphery of the battery pack is convenient for placing in the equipment containing space in the later period, and obstruction is avoided.

[0060] The above working process is described in detail in the following Figure 1 、 Figures 3 to 6 .

[0061] Further, when the two inner supports 2 abut against each other, the first ventilation pipe 31 and the second ventilation pipe 33 at the top thereof also abut against each other, in the process, the outer wall of the second ventilation pipe 33 is sleeved on the inner wall of the ring sleeve 32, and finally abuts against the end of the first ventilation pipe 31, the ring sleeve 32 increases the sealing property of the connection between the first ventilation pipe 31 and the second ventilation pipe 33, at the same time, when the inner connector pipe 37 abuts against the second ventilation pipe 33, the middle part of the rubber sealing ring 39 is extruded and pushed, because the rubber sealing ring 39 is arranged in a folded layer shape, and a circular hole is arranged at the center thereof, therefore, the inner connector pipe 37 can penetrate through the rubber sealing ring 39, and the rubber sealing ring 39 wraps the outer wall of the inner connector pipe 37 to form a sealing layer, the flow guide connector 38 supports and positions the inner connector pipe 37, the vertical pipe 35 is connected to the gap between two battery cells at the bottom, and the discharge hole 36 arranged in the middle of the baffle 34 can penetrate through the gap, so that the gaps between all the battery cells in the battery pack are connected through the first ventilation pipe 31 and the second ventilation pipe 33, then the ventilation pipe connector 310 is connected to the external ventilation system, when the air temperature is too high, the heat generated by the battery cells during work is accumulated in the gap between two battery cells, through the external ventilation system, the air flow is drawn, so that the hot air in the gap is connected to the vertical pipe 35, then gathered into the first ventilation pipe 31, then the hot air is introduced into the inner connector pipe 37 through the flow guide connector 38, and then into the second ventilation pipe 33, finally, the hot air is discharged through the ventilation pipe connector 310, the heat generated by the battery cells is quickly and uniformly discharged, when the air temperature is too low, the battery runs slowly, at this time, warm air can be filled from the ventilation pipe connector 310 through the external ventilation system, and the warm air flows reversely to the vertical pipe 35, and is discharged into the gap between two battery cells, so that the temperature of the battery cells is uniformly increased, and the normal working state is maintained, and the insufficient power supply caused by low temperature is effectively avoided.

[0062] The above working process please refer to Figure 1 , Figure 2 , Figures 7 to 11 .

[0063] The circuit and control involved in the present application are prior art, and will not be described in detail here.

[0064] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cell holder capable of improving cell swelling, comprising an outer holder (1), characterized in that, The outer support (1) is provided with a pair of inner supports (2) on one side of the pair of outer supports (1) close to each other, and further comprises The self-penetrating mechanism (3) is used for connecting the gap between the battery cells to assist air flow; the self-penetrating mechanism (3) comprises a pair of first ventilation pipes (31) and second ventilation pipes (33), the first ventilation pipes (31) and the second ventilation pipes (33) are respectively fixedly connected to the top of two different inner supports (2), the bottom of the first ventilation pipe (31) and the second ventilation pipe (33) is fixedly connected with a vertical pipe (35), the outer wall of a plurality of vertical pipes (35) is fixedly connected to the top of the inner support (2), the self-penetrating mechanism (3) further comprises a plurality of ring sleeves (32), the inner wall of the ring sleeve (32) is fixedly connected to one side of the first ventilation pipe (31) close to the second ventilation pipe (33), the inner wall of one side of the first ventilation pipe (31) close to the second ventilation pipe (33) is fixedly connected with a flow guide joint (38), the middle part of a plurality of flow guide joints (38) is fixedly connected with an inner connecting pipe (37), the inner wall of one side of the first ventilation pipe (31) away from the flow guide joint (38) is fixedly connected with a rubber sealing ring (39), the inner wall of one side of the second ventilation pipe (33) close to the first ventilation pipe (31) is also fixedly connected with a rubber sealing ring (39), the outer wall of a plurality of inner connecting pipes (37) is clamped at the center of the rubber sealing ring (39), one side of the second ventilation pipe (33) away from the first ventilation pipe (31) is fixedly connected with a pipe joint (310), the self-penetrating mechanism (3) further comprises a baffle (34) fixedly connected to the middle part of a plurality of inner supports (2), a plurality of baffles (34) are provided with a plurality of row holes (36) in the middle part; The positioning and releasing mechanism (4) is used for positioning and releasing the battery cell between the outer support (1) and the inner support (2), and the positioning and releasing mechanism (4) comprises a positioning column (42) rotatably connected to one outer support (1), a plurality of positioning columns (42) are arranged at the four peripheral edges of the outer support (1) and are equidistantly distributed, one side of each of the plurality of positioning columns (42) is fixedly connected with a clamping groove seat (41), the other side of the positioning column (42) is provided with a threaded groove (48), the side of the positioning column (42) away from the clamping groove seat (41) is threadedly connected to the inner wall of the other outer support (1), the positioning and releasing mechanism (4) further comprises a cross plate (43) fixedly connected to the middle part of a pair of outer supports (1), the center of each of the pair of cross plates (43) is rotatably connected with a threaded column (45), one side of the threaded column (45) is fixedly connected with a pressing disc (44), the other side of the threaded column (45) is fixedly connected with a clamping groove seat (41), the outer wall of each of the pair of clamping groove seats (41) is fixedly connected with an anti-dropping pad (49), the positioning and releasing mechanism (4) further comprises a half screw ring (47) fixedly connected to the upper and lower sides of the outer support (1) and the inner support (2), one half screw ring (47) is arranged on each of the upper and lower sides of the outer support (1), a pair of half screw rings (47) are arranged on each of the upper and lower sides of the inner support (2), and the outer walls of the two half screw rings (47) are threadedly connected with a nut (46).

2. The battery cell support of claim 1, wherein, The opening directions of the half screw rings (47) on the outer support (1) are all towards the inner support (2), and the opening directions of the half screw rings (47) on the inner support (2) are all towards the two sides.

3. The battery cell support of claim 1, wherein, The rubber sealing ring (39) is arranged in a folded layer shape, and a circular hole is formed at the center of the rubber sealing ring (39).

4. The battery cell support of claim 1, wherein, The outer support (1) is provided with a groove at the position corresponding to the clamping groove seat (41) on the four peripheral edges.

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