Soft package type lithium battery module

Abstract

The utility model belongs to the technical field of lithium batteries, and discloses a soft package type lithium battery module which comprises a shell part and a heat dissipation part, an inner cavity is formed in the shell part, the heat dissipation part comprises a heat absorption part, a heat dissipation part and a liquid conveying part, the heat absorption part is installed in the inner cavity and comprises a plurality of heat absorption plates, and the liquid conveying part is installed in the heat absorption plate. Battery pieces are placed between every two adjacent heat absorption plates and between the heat absorption plates and the inner wall of the inner cavity, a liquid guide pipe is connected between every two adjacent heat absorption plates, the liquid inlet end of the liquid conveying part and the liquid outlet end of the heat dissipation part are connected with the two heat absorption plates on the outermost side respectively, heat generated when the battery pieces work is absorbed through the heat absorption plates, and the heat dissipation effect is improved through work of the liquid conveying part. Therefore, the heat conduction liquid in the heat absorption plate is extracted and conveyed to the heat dissipation part for heat dissipation, the heat conduction liquid with the reduced temperature is conveyed back to the interior of the heat absorption plate, the device can continuously assist the heat dissipation of the battery piece, the heat dissipation efficiency of the device is improved, and the battery piece is prevented from being overheated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery technical field, concretely relates to a kind of soft pack type lithium battery module. BACKGROUND

[0002] Soft pack lithium battery gradually becomes important component of lithium ion battery market with its high energy density, design flexibility, good safety and the like advantages.However, at module level, how to effectively integrate soft pack lithium battery, improve the overall performance of module, is still a problem in current technical field.At present, soft pack lithium battery module on market has certain defects when using, for example, in the Chinese patent with announcement number "CN 222422113 U", a kind of novel battery module and battery pack are disclosed, including electric core, the electric core is soft pack electric core, the soft pack electric core at least includes the laminated package structure that bare core, tab, tab rubber sheet and aluminum plastic film are adhered by battery positive and negative pole sheet and battery diaphragm are stacked;Shell, including at least one opening one-piece forming or welding forming main body, matching the shape of the electric core, the average thickness of the inner cavity of the main body is at least positive integer times greater than the thickness of the electric core;End cover, including the main body made of insulating material or insulating material and metal material composite, the end cover is provided with the strip-shaped narrow hole that the electric core tab can pass through, the surface of strip-shaped narrow hole and the area contacted by the electric core tab have insulating structure, the device uses, can only rely on itself to slowly dissipate heat, so the heat dissipation efficiency is low, and battery is prone to overheating. SUMMARY

[0003] The utility model aims at providing a kind of soft pack type lithium battery module, to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of soft pack type lithium battery module, including shell piece and heat dissipation piece, the inside of the shell piece is formed hollow inner cavity, the heat dissipation piece includes heat absorption part, heat dissipation part and infusion part, the infusion channel that heat-conducting liquid is transported along preset path is formed between heat absorption part, heat dissipation part and infusion part, and infusion part is installed between heat dissipation part and heat absorption part, the heat absorption part is installed in the inside of the inner cavity, and heat absorption part includes multiple heat absorption plates, battery piece is placed between adjacent two heat absorption plates and between heat absorption plate and inner wall in the inner cavity, and the infusion tube is connected between adjacent two heat absorption plates, the liquid inlet end of the infusion part and the liquid outlet end of the heat dissipation part are connected with the two heat absorption plates of outermost side respectively.

[0005] Preferably, the heat dissipation part includes heat dissipation plate, the top of the heat dissipation plate is fixedly connected with multiple porous plates, and the inside of the heat dissipation plate forms flow guide channel, the liquid outlet end of the heat dissipation plate is fixedly connected with return pipe, and the liquid outlet end of the return pipe is connected with heat absorption plate.

[0006] Preferably, the top of the heat dissipation plate is symmetrically fixed with two top plates, a plurality of the porous plates are between the two top plates, and a heat dissipation fan is installed on the porous plate.

[0007] Preferably, the infusion part comprises a pump body, and the liquid inlet end and the liquid outlet end of the pump body are fixedly connected with a liquid inlet pipe and a liquid outlet pipe, respectively.

[0008] Preferably, the shell part comprises a shell, a detachable sealing cover is arranged on one side of the shell, the inner cavity is formed in the interior of the shell, and deformable buckles are arranged on the two symmetrical sides of the shell and are clamped with the sealing cover on one side.

[0009] Preferably, the battery part comprises a soft-pack battery, and a tab is connected to the soft-pack battery.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] (1) The utility model discloses a heat absorption plate, a heat dissipation part and an infusion part, which absorb the heat generated by the battery part during work, work through the infusion part, extract the heat conduction liquid in the heat absorption plate, and transport the heat conduction liquid to the heat dissipation part for heat dissipation, so that the heat conduction liquid after temperature reduction is transported back to the heat absorption plate, the device can continuously assist the battery part heat dissipation part, the device can actively dissipate heat, improve the heat dissipation efficiency of the device, and avoid the overheating of the battery part.

[0012] (2) When the heat dissipation plate dissipates heat, the porous plate is used to accelerate the heat dissipation efficiency of the heat conduction liquid in the heat dissipation plate, and the heat dissipation fan on the top plate works to guide the gas to the porous plate, further improving the heat dissipation efficiency of the device and further reducing the probability of overheating of the battery part. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 It is an internal structure diagram of the shell part of the utility model;

[0016] Figure 4 It is Figure 3 It is an enlarged view of A part in the middle;

[0017] Figure 5 It is a top view of the battery part of the utility model;

[0018] Figure 6 It is a top view of the heat dissipation part of the utility model;

[0019] Figure 7 This is a diagram showing the internal structure of the heat sink of this utility model;

[0020] In the diagram: 1. Housing component; 11. Outer shell; 12. Inner cavity; 13. Heat absorber plate; 14. Liquid guide tube; 15. Sealing cap; 16. Buckle; 2. Battery component; 21. Soft pack battery; 22. Tab; 3. Heat dissipation component; 31. Heat dissipation plate; 32. Perforated plate; 33. Top plate; 34. Pump body; 35. Liquid inlet pipe; 36. Liquid outlet pipe; 37. Liquid return pipe; 38. Cooling fan; 39. Flow guide channel. Detailed Implementation

[0021] 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 protection scope of the present utility model.

[0022] Please see Figures 1-7 As shown, this utility model provides the following technical solution:

[0023] A soft-pack lithium battery module includes a housing 1 and a heat dissipation component 3. The housing 1 has a hollow inner cavity 12. The heat dissipation component 3 includes a heat absorption part, a heat dissipation part, and a liquid delivery part. A liquid delivery channel for delivering heat-conducting liquid along a preset path is formed between the heat absorption part, the heat dissipation part, and the liquid delivery part. The liquid delivery part is installed between the heat dissipation part and the heat absorption part. The heat absorption part is installed inside the inner cavity 12. The heat absorption part includes multiple heat absorption plates 13. A battery component 2 is placed between two adjacent heat absorption plates 13 and between the heat absorption plate 13 and the inner wall of the inner cavity 12. A liquid guide pipe 14 is connected between two adjacent heat absorption plates 13. The liquid inlet end of the liquid delivery part and the liquid outlet end of the heat dissipation part are respectively connected to the two outermost heat absorption plates 13.

[0024] With the above technical solution, before the device works, multiple battery components 2 are installed one by one between two adjacent heat-absorbing plates 13, or between the heat-absorbing plate 13 and the inner wall of the inner cavity 12. After the battery components 2 are installed, if the battery components 2 start to work, the battery components 2 will inevitably start to heat up. The heat generated by the battery components 2 during operation is absorbed by the heat-absorbing plate 13, which raises the temperature of the heat-conducting liquid inside the heat-absorbing plate 13. The heat-conducting liquid inside the heat-absorbing plate 13 is drawn out through the liquid delivery section and transported to the heat dissipation section. The heat of the heat-conducting liquid is evaporated through the heat dissipation section, thereby lowering the temperature of the heat-conducting liquid. After the temperature of the heat-conducting liquid drops, it is transported back to the heat-absorbing plate 13. Through the circulation of the heat-conducting liquid, the heat of the battery components 2 is continuously assisted in heat dissipation.

[0025] Specifically, in an embodiment, as shown in Figure 1 、 Figure 2 、 Figure 6 and Figure 7 , the heat dissipation part includes a heat dissipation plate 31, a plurality of porous plates 32 are fixedly connected to the top of the heat dissipation plate 31, and a flow guide channel 39 is formed inside the heat dissipation plate 31, and a liquid return pipe 37 is fixedly connected to the liquid outlet end of the heat dissipation plate 31, and the liquid outlet end of the liquid return pipe 37 is connected to the heat absorption plate 13.

[0026] In this embodiment, when the heat-conducting liquid is transported to the inside of the heat dissipation plate 31, the heat-conducting liquid flows along the flow guide channel 39 inside the heat dissipation plate 31, and when the heat-conducting liquid flows inside the flow guide channel 39, the heat-conducting liquid is dissipated by the cooperation of the heat dissipation plate 31 and the porous plate 32, so that the heat of the heat-conducting liquid is reduced, and after the heat of the heat-conducting liquid is reduced, the heat-conducting liquid is transported back to the inside of the heat absorption plate 13 through the liquid return pipe 37, and the heat-conducting liquid circulates to dissipate heat for the battery piece 2.

[0027] In order to improve the heat dissipation efficiency of the heat dissipation plate 31, as shown in Figure 1 、 Figure 2 and Figure 6 , two top plates 33 are fixedly connected to the top of the heat dissipation plate 31 in a symmetrical manner, the plurality of porous plates 32 are between the two top plates 33, and the heat dissipation fan 38 is installed on the porous plate 32.

[0028] In this embodiment, when the heat dissipation plate 31 and the porous plate 32 dissipate heat, the porous plate 32 is supported by the heat dissipation plate 31, and the heat dissipation fan 38 works to guide the airflow to the porous plate 32, thereby accelerating the flow rate of the gas near the porous plate 32, and further improving the heat dissipation efficiency of the porous plate 32.

[0029] Specifically, in an embodiment, as shown in Figure 1 、 Figure 2 and Figure 6 , the liquid delivery part includes a pump body 34, and the liquid inlet pipe 35 and the liquid outlet pipe 36 are fixedly connected to the liquid inlet end and the liquid outlet end of the pump body 34, respectively.

[0030] Through the above embodiment, the pump body 34 works to draw the heat-conducting liquid inside the heat absorption plate 13 through the liquid inlet pipe 35, and the heat-conducting liquid is discharged through the liquid outlet pipe 36, so that the heat-conducting liquid is transported to the inside of the heat dissipation plate 31, thereby assisting the battery piece 2 to dissipate heat.

[0031] Specifically, in an embodiment, as shown in Figures 1-4As shown in the figure, the shell piece 1 comprises an outer shell 11, one side of the outer shell 11 is provided with a detachable sealing cover 15, an inner cavity 12 is formed in the inner part of the outer shell 11, and the symmetrical two sides of the outer shell 11 are provided with deformable buckles 16, one side of the buckle 16 is clamped with the sealing cover 15.

[0032] In the embodiment, when the battery piece 2 needs to be installed, the buckle 16 is pulled to separate the buckle 16 from the sealing cover 15, then the battery piece 2 is inserted into the inner cavity 12 in the inner part of the outer shell 11, and then the sealing cover 15 is placed on one side of the outer shell 11 to clamp the buckle 16 with the sealing cover 15, so as to fix the sealing cover 15.

[0033] In addition, in the utility model, as for the above-mentioned battery piece 2, as shown in the figure, Figure 3 The battery piece 2 comprises a soft package battery 21, and the soft package battery 21 is connected with a tab 22.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A soft-pack lithium battery module, characterized in that: The device includes a housing (1) and a heat dissipation component (3). The housing (1) forms a hollow inner cavity (12). The heat dissipation component (3) includes a heat absorption part, a heat dissipation part, and a liquid delivery part. A liquid delivery channel for delivering heat-conducting liquid along a preset path is formed between the heat absorption part, the heat dissipation part, and the liquid delivery part. The liquid delivery part is installed between the heat dissipation part and the heat absorption part. The heat absorption part is installed inside the inner cavity (12). The heat absorption part includes multiple heat absorption plates (13). A battery component (2) is placed between two adjacent heat absorption plates (13) and between the heat absorption plate (13) and the inner wall of the inner cavity (12). A liquid guide pipe (14) is connected between two adjacent heat absorption plates (13). The liquid inlet end of the liquid delivery part and the liquid outlet end of the heat dissipation part are respectively connected to the two outermost heat absorption plates (13).

2. The soft-pack lithium battery module according to claim 1, characterized in that: The heat dissipation part includes a heat dissipation plate (31), a plurality of perforated plates (32) are fixedly connected to the top of the heat dissipation plate (31), and a flow channel (39) is formed inside the heat dissipation plate (31). A return pipe (37) is fixedly connected to the liquid outlet end of the heat dissipation plate (31), and the liquid outlet end of the return pipe (37) is connected to the heat absorption plate (13).

3. A soft-pack lithium battery module according to claim 2, characterized in that: The heat sink (31) has two top plates (33) symmetrically fixedly connected to its top, and multiple perforated plates (32) are located between the two top plates (33), with heat sinks (38) installed on the perforated plates (32).

4. A soft-pack lithium battery module according to claim 1, characterized in that: The infusion section includes a pump body (34), and the inlet end and outlet end of the pump body (34) are respectively fixedly connected to an inlet pipe (35) and an outlet pipe (36).

5. A soft-pack lithium battery module according to claim 1, characterized in that: The housing component (1) includes an outer shell (11), a removable sealing cover (15) is provided on one side of the outer shell (11), the inner cavity (12) is formed inside the outer shell (11), and deformable buckles (16) are provided on both symmetrical sides of the outer shell (11), one side of the buckle (16) engaging with the sealing cover (15).

6. A soft-pack lithium battery module according to claim 1, characterized in that: The battery component (2) includes a pouch battery (21) with tabs (22) connected to it.

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