Immersion type liquid-cooled battery module

Abstract

The utility model provides a soaking type liquid-cooled battery module, which belongs to the technical field of batteries and comprises a lower shell, a flow separation plate and a sealing plate, the flow separation plate and the sealing plate are arranged on the lower shell, a liquid inlet interface is fixedly connected to the inner wall of one side of the lower shell, and a liquid outlet interface is fixedly connected to the inner wall of one side, far away from the liquid inlet interface, of the lower shell. And a plurality of groups of slots are formed in the bottom side of the lower shell. According to the utility model, the coolant in the lower shell is divided into a plurality of flowing channels by the flow separation plates, so that the coolant can flow more uniformly in each layer of flow channel, meanwhile, the coolant can be more uniformly contacted with each single battery, the temperature difference between batteries is reduced, and the pressure loss during the flowing of the coolant can be reduced; and meanwhile, the arranged flow guide plates guide the coolants on the two sides of the battery, so that the coolants on the two sides of the battery are prevented from colliding, it is guaranteed that the coolants on the two sides of the single battery can flow in the direction of the flow separation plates, and the heat exchange efficiency of the whole module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an immersion-type liquid-cooled battery module. Background Art

[0002] Immersion liquid-cooled battery modules are a type of battery cooling technology that achieves rapid and uniform heat dissipation by directly immersing battery cells in insulating coolant. Compared with traditional cooling systems, the structure of the immersion liquid cooling system is simpler because it does not require complex pipes or heat sinks to transfer heat. Since the battery cells are in direct contact with the coolant, the heat transfer efficiency is high, so rapid cooling can be achieved. The flow properties of the liquid ensure uniform temperature distribution inside the battery module, avoiding the problem of local overheating.

[0003] In the prior art, the cavity in the common immersion liquid-cooled battery module is relatively crowded, and the gaps in the single battery are limited. During the heat exchange process of the internal coolant flowing, the liquid flows through multiple gaps and easily collides, resulting in a decrease in flow rate, thereby affecting the subsequent heat exchange efficiency. How to invent an immersion liquid-cooled battery module to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides an immersion liquid-cooled battery module, which aims to improve the problem that the liquid in the common immersion liquid-cooled battery module flows through multiple gaps and easily causes collisions, resulting in a decrease in flow rate, affecting the subsequent heat exchange efficiency.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an immersion liquid-cooled battery module, comprising a lower shell and a flow partition and a sealing plate arranged on the lower shell, a liquid inlet interface is fixedly connected to an inner wall of one side of the lower shell, a liquid outlet interface is fixedly connected to an inner wall of a side of the lower shell away from the liquid inlet interface, a plurality of slots are provided on the bottom side of the lower shell, a mounting slot is provided on one side of the slot, and a battery cell is installed on the inner wall of the slot;

[0007] The two flow partitions are inserted and fixedly connected to the bottom inner wall of the lower shell body near the battery cells, and one end of the two flow partitions is fixedly connected with a symmetrical inclined plate;

[0008] The inner wall of the sealing plate is plugged into the outer wall of the upper pole of the battery cell, and an upper pole plate is installed on the upper end of the sealing plate.

[0009] Preferably, the inner wall of the slot is fixedly connected with a lower sealing ring, the inner wall of the lower sealing ring is sealed with the lower outer wall of the battery cell, and the inner wall of the mounting groove is fixedly connected with a lower electrode plate electrically connected to the lower pole of the battery cell.

[0010] Preferably, the two inclined plates divide the coolant flowing at the liquid inlet interface into multi-layer flow channels, and the bottom end of the inclined plate is not connected to the inner wall of the lower shell.

[0011] Preferably, a plurality of guide plates are fixedly connected to the inner wall of the bottom side of the lower shell body close to the slot, the cross section of the guide plate is "Y"-shaped, and a plurality of penetrating flow holes are opened on one side of the guide plate.

[0012] By adopting the above technical solution, the coolant enters the lower shell through the liquid inlet, cools the internal battery cells, and then flows out through the liquid outlet interface to dissipate the heat for cooling.

[0013] Preferably, a plurality of flow grooves are provided on the outer walls on both sides of the flow partition plate, and the same flow grooves are provided on the inner walls on both sides of the lower shell body.

[0014] Preferably, the inner wall of the sealing plate is fixedly connected with a plurality of upper sealing rings which are sealed to the outer wall of the upper end of the battery cell, the sealing plate is fixed to the lower shell by screws, the sealing plate is fixed to the upper electrode plate by screws, and the joints between the sealing plate and the lower shell and between the sealing plate and the upper electrode plate are filled with sealant.

[0015] By adopting the above technical solution, the coolant in the lower shell body improves the flow effect through the flow groove on the flow partition plate, and the upper sealing plate prevents the poles of the battery cells from being immersed in the coolant and causing corrosion damage.

[0016] The beneficial effects of the utility model are:

[0017] The provided flow partition divides the coolant inside the lower shell into multiple flow channels, so that the flow of the coolant in each layer of the flow channel will be more uniform, and at the same time, the coolant can contact each battery cell more evenly, reducing the temperature difference between the batteries, and can reduce the pressure loss when the coolant flows, thereby improving the flow efficiency of the coolant. At the same time, the provided guide plate guides the coolant on both sides of the battery to prevent the coolant on both sides of the battery from colliding, ensuring that the coolant on both sides of the battery cell can flow along the direction of the flow partition, thereby improving the heat exchange efficiency of the entire module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of an immersion liquid-cooled battery module provided by an embodiment of the utility model;

[0020] Figure 2 This is a disassembled diagram of the overall structure of an immersion liquid-cooled battery module provided by the embodiment of the utility model;

[0021] Figure 3 This is a partial structural schematic diagram of an immersion liquid-cooled battery module provided by an embodiment of the utility model;

[0022] Figure 4 This is a half-section diagram of the overall structure of an immersion liquid-cooled battery module provided by an embodiment of the utility model;

[0023] Figure 5 This utility model provides an immersion liquid-cooled battery module Figure 2 A magnified view of the structure of the middle A area;

[0024] Figure 6 This utility model provides an immersion liquid-cooled battery module Figure 4 A magnified view of the structure of region B.

[0025] In the figure: 1, lower shell; 2, liquid inlet interface; 3, liquid outlet interface; 4, flow separator; 5, flow groove; 6, inclined plate; 7, slot; 8, mounting groove; 9, lower sealing ring; 10, lower electrode plate; 11, guide plate; 12, flow hole; 13, battery cell; 14, sealing plate; 15, upper sealing ring; 16, upper electrode plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example, see Figure 1-Figure 6, an immersion liquid-cooled battery module, comprising a lower shell 1 and a flow partition 4 and a sealing plate 14 arranged on the lower shell 1, a liquid inlet interface 2 is fixedly connected to the inner wall of one side of the lower shell 1, a liquid outlet interface 3 is fixedly connected to the inner wall of the side of the lower shell 1 away from the liquid inlet interface 2, a plurality of groups of slots 7 are provided on the bottom side of the lower shell 1, a mounting groove 8 is provided on one side of the slot 7, and a battery cell 13 is installed on the inner wall of the slot 7;

[0028] Two flow partitions 4 are inserted and fixedly connected to the bottom inner wall of the lower housing 1 near the battery cells 13, and one end of the two flow partitions 4 is fixedly connected to a symmetrical inclined plate 6;

[0029] The inner wall of the sealing plate 14 is plugged into the outer wall of the upper pole of the battery cell 13 , and an upper pole plate 16 is installed on the upper end of the sealing plate 14 .

[0030] Furthermore, a lower sealing ring 9 is fixedly connected to the inner wall of the slot 7, and the inner wall of the lower sealing ring 9 is sealedly connected to the outer wall of the lower end of the battery cell 13. The inner wall of the mounting groove 8 is fixedly connected to the lower electrode plate 10 electrically connected to the lower end pole of the battery cell 13. The two inclined plates 6 divide the coolant flowing at the liquid inlet interface 2 into multiple layers of flow channels. The bottom end of the inclined plate 6 and the inner wall of the lower shell 1 are not connected. A plurality of guide plates 11 are fixedly connected to the inner wall of the bottom side of the lower shell 1 near the slot 7. The cross-section of the guide plate 11 is "Y"-shaped, and a plurality of penetrating flow holes 12 are opened on one side of the guide plate 11.

[0031] It should be noted that: multiple battery cells 13 are respectively inserted into the inner wall of the lower sealing ring 9 in the slot 7, so that the poles at the lower ends of the battery cells 13 are connected in series through the lower electrode plate 10, and then the sealing plate 14 and the upper electrode plate 16 are installed in turn, so that the upper poles of the battery cells 13 are connected in series through the upper electrode plate 16, and the coolant flows into the interior of the lower shell 1 through the liquid inlet interface 2, so that it fills the cavity between the battery cells 13, and heat is exchanged through the liquid outlet interface 3. During the heat exchange process, the flow partition 4 divides the cavity into multiple flow channels to improve the cooling effect. At the same time, in order to avoid the coolant colliding with each other along the outer wall of the battery cell 13 during the flow process to reduce the flow rate, the coolant on both sides is guided by the guide plate 11 to further increase the flow speed.

[0032] Furthermore, a plurality of flow grooves 5 are provided on the outer walls on both sides of the flow partition 4, and the same flow grooves 5 are provided on the inner walls on both sides of the lower shell 1, and a plurality of upper sealing rings 15 are fixedly connected to the inner wall of the sealing plate 14 and are sealed to the outer wall of the upper end of the battery cell 13, and the sealing plate 14 is fixed to the lower shell 1 by screws, and the sealing plate 14 is fixed to the upper electrode plate 16 by screws, and the joints between the sealing plate 14 and the lower shell 1 and the sealing plate 14 and the upper electrode plate 16 are filled with sealant.

[0033] It should be noted that: the multiple flow grooves 5 opened on both sides of the flow partition 4 and the inner wall of the lower shell 1 limit the flow direction, further improving the flow effect. At the same time, the coolant and the upper pole of the battery cell 13 are stratified through the sealing plate 14 to avoid safety hazards caused by contact between components on the pole of the battery cell 13 and the coolant.

[0034] The working principle of this immersion liquid-cooled battery module:

[0035] A plurality of battery cells 13 are respectively inserted into the inner wall of the lower sealing ring 9 in the slot 7, so that the poles at the lower ends of the battery cells 13 are connected in series through the lower electrode plate 10, and then the sealing plate 14 and the upper electrode plate 16 are installed in sequence, so that the poles at the upper ends of the battery cells 13 are connected in series through the upper electrode plate 16, and only part of the battery cells 13 are immersed, and the coolant flows into the interior of the lower shell 1 through the liquid inlet interface 2, so that it fills the cavity between the battery cells 13, and heat is exchanged through the liquid outlet interface 3. During the heat exchange process, the flow partition 4 divides the cavity into multiple flow channels to improve the cooling effect. At the same time, in order to avoid the coolant from colliding with each other along the outer wall of the battery cell 13 during the flow process to reduce the flow rate, the coolant on both sides is guided by the guide plate 11 to ensure that the coolant on both sides of the battery cell 13 can flow and exchange heat along the direction of the flow partition 4, thereby improving the heat exchange efficiency of the entire module.

[0036] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0037] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An immersion liquid-cooled battery module, comprising a lower shell (1) and a flow partition (4) and a sealing plate (14) arranged on the lower shell (1), characterized in that: A liquid inlet interface (2) is fixedly connected to the inner wall of one side of the lower shell (1), a liquid outlet interface (3) is fixedly connected to the inner wall of the side of the lower shell (1) away from the liquid inlet interface (2), a plurality of groups of slots (7) are provided on the bottom side of the lower shell (1), a mounting groove (8) is provided on one side of the slots (7), and a battery cell (13) is installed on the inner wall of the slots (7); The two flow partitions (4) are inserted and fixedly connected to the bottom inner wall of the lower shell (1) near the battery cells (13), and one end of the two flow partitions (4) is fixedly connected to a symmetrical inclined plate (6); The inner wall of the sealing plate (14) is plugged into the outer wall of the upper pole of the battery cell (13), and an upper pole plate (16) is installed at the upper end of the sealing plate (14).

2. The immersion liquid-cooled battery module according to claim 1, characterized in that: The inner wall of the slot (7) is fixedly connected to a lower sealing ring (9), the inner wall of the lower sealing ring (9) is sealedly connected to the outer wall of the lower end of the battery cell (13), and the inner wall of the mounting groove (8) is fixedly connected to a lower electrode plate (10) electrically connected to the lower end pole of the battery cell (13).

3. The immersion liquid-cooled battery module according to claim 2, characterized in that: The two inclined plates (6) divide the coolant flowing at the liquid inlet interface (2) into multi-layer flow channels, and the bottom end of the inclined plate (6) is not connected to the inner wall of the lower shell (1).

4. The immersion liquid-cooled battery module according to claim 3, characterized in that: A plurality of guide plates (11) are fixedly connected to the inner wall of the bottom side of the lower shell (1) close to the slot (7); the cross section of the guide plate (11) is "Y"-shaped, and a plurality of penetrating flow holes (12) are provided on one side of the guide plate (11).

5. The immersion liquid-cooled battery module according to claim 1, characterized in that: The outer walls on both sides of the flow partition (4) are provided with a plurality of flow grooves (5), and the inner walls on both sides of the lower shell (1) are provided with the same flow grooves (5).

6. The immersion liquid-cooled battery module according to claim 5, characterized in that: The inner wall of the sealing plate (14) is fixedly connected with a plurality of upper sealing rings (15) which are sealed to the outer wall of the upper end of the battery cell (13); the sealing plate (14) is fixed to the lower shell (1) by screws; the sealing plate (14) is fixed to the upper electrode plate (16) by screws; and the connection between the sealing plate (14) and the lower shell (1) and between the sealing plate (14) and the upper electrode plate (16) is filled with sealant.

Images