Battery cluster liquid cooling loop exhaust buffer device

Abstract

The utility model provides a battery cluster liquid cooling loop exhaust buffer device, which relates to the technical field of liquid cooling exhaust and comprises an expansion water tank, a rectangular groove is arranged at the top end of the front surface of the expansion water tank, a one-way exhaust valve is fixed at the bottom of the inner wall of the rectangular groove, a plurality of limiting grooves are arranged on the inner wall of the rectangular groove, and limiting blocks are slidably connected with the inner walls of the limiting grooves. The surface of the limiting block is fixed to the bottom of the inner wall of the limiting groove through a bolt. According to the utility model, the one-way exhaust valve is arranged on the expansion water tank, so that when the internal air pressure of the expansion water tank is overlarge, the one-way exhaust valve can automatically exhaust part of air to reduce the internal air pressure, the sealing performance between components is prevented from being reduced due to overlarge air pressure in a battery cluster liquid cooling loop, and the pressure is prevented from exceeding the design limit of the expansion water tank; the expansion tank is prevented from cracking due to too high air pressure or the cooling liquid in the cold circulation loop is prevented from overflowing due to gas extrusion, and the effect of prolonging the service life of the expansion tank is achieved.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling exhaust technology, and in particular to an exhaust buffer device for a battery cluster liquid cooling circuit. Background Technology

[0002] The battery cluster liquid cooling circuit absorbs the heat generated by the battery cluster through circulating coolant. Utilizing the high specific heat capacity and fluidity of the liquid, the heat is carried away and dissipated to the external environment, thereby maintaining the battery within a suitable temperature range. The battery cluster liquid cooling circuit often has an expansion tank with liquid pipes on both sides. The liquid pipes are filled with coolant, and the expansion tank reduces the impact of coolant volume changes on the battery cluster liquid cooling circuit components.

[0003] A search revealed that utility model publication number CN219226397U discloses a dual-cycle liquid cooling system and a vehicle. The dual-cycle liquid cooling system includes a first liquid cooling circulation loop and a second liquid cooling circulation loop. The first liquid cooling circulation loop is equipped with a first water-cooling unit for cooling the battery system; the second liquid cooling circulation loop is equipped with a second water-cooling unit for cooling the battery system. The aforementioned liquid cooling system comprises two liquid cooling circulation loops, namely the first liquid cooling circulation loop and the second liquid cooling circulation loop. The first liquid cooling circulation loop is equipped with a first water-cooling unit, and the second liquid cooling circulation loop is equipped with two water-cooling units, both of which are used to cool the battery system. That is, the aforementioned liquid cooling system uses dual water-cooling units and dual circulation loops to cool the battery system, which, compared to the traditional design using a single water-cooling unit, can improve the cooling effect and meet the cooling requirements of high-capacity batteries.

[0004] In the aforementioned patent, when the vehicle is used in high-temperature conditions such as summer, the air volume in the cold circulation circuit increases, resulting in high air pressure inside the circuit and the expansion tank. This can easily exceed the design limit of the expansion tank, causing the expansion tank to rupture due to excessive air pressure or the coolant in the cold circulation circuit to overflow due to gas compression. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a battery cluster liquid cooling circuit exhaust buffer device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a battery cluster liquid cooling circuit exhaust buffer device, comprising an expansion tank, a rectangular groove is formed at the top front of the expansion tank, a one-way exhaust valve is fixed at the bottom of the inner wall of the rectangular groove, a plurality of limiting grooves are formed on the inner wall of the rectangular groove, a limiting block is slidably connected to the inner wall of the limiting groove, the surface of the limiting block is fixed to the bottom of the inner wall of the limiting groove by bolts, a pad is fixed at one end of the limiting block, a slot is formed on the surface of the expansion tank, a threaded block is fixed to the inner wall of the slot by bolts, an L-shaped part is fixed to the surface of the threaded block, and the surface of the L-shaped part and the surface of the pad are both in contact with the peripheral surface of the one-way exhaust valve.

[0007] Preferably, the back of the expansion tank is flat.

[0008] Preferably, the expansion tank has multiple strap grooves on its front side.

[0009] Preferably, the expansion tank has an installation groove on its front side, a pressure gauge is fixed to the inner wall of the installation groove, and rubber pads are fixed to the top and bottom of the inner wall of the installation groove.

[0010] Preferably, the bottom of the inner wall of the mounting groove is chamfered.

[0011] Preferably, the top of the inner wall of the mounting groove is chamfered.

[0012] Preferably, the surface of the rubber pad has multiple inner grooves.

[0013] Preferably, the end of the inner groove furthest from the mounting groove is higher than the end of the inner groove closest to the mounting groove.

[0014] Beneficial effects:

[0015] 1. This utility model achieves the effect of installing a one-way vent valve in the expansion tank, so that when the internal air pressure of the expansion tank is too high, the one-way vent valve can automatically release some air to reduce the internal air pressure. This prevents the air pressure in the liquid cooling circuit of the battery cluster from being too high, which would reduce the sealing between components. It also prevents the pressure from exceeding the design limit of the expansion tank, and prevents the expansion tank from rupturing due to excessive air pressure or the coolant in the cold circulation circuit from overflowing due to gas compression. This improves the service life of the expansion tank.

[0016] 2. This utility model achieves the goal of fixing both the mounting pad and the L-shaped component to the expansion tank and ensuring they fit snugly against the one-way vent valve during vehicle movement, battery pack transportation, and venting. This prevents damage to the fixing point between the one-way vent valve and the expansion tank due to the longer lever arm of the one-way vent valve at the far end of the fixing point and its heavy weight. At the same time, it protects the one-way vent valve from scratches, thereby improving the service life of both the one-way vent valve and the expansion tank.

[0017] 3. This utility model achieves a better fixation effect by making the back of the expansion tank flat, thereby ensuring a tight fit between the expansion tank and the battery cluster and preventing poor fixation due to imprecise fit. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the expansion tank of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the L-shaped component of this utility model;

[0021] Figure 4 This is a cross-sectional view of the pad block of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the limiting groove of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the mounting groove of this utility model;

[0024] Figure 7 This is a three-dimensional structural diagram of the chamfered corner of this utility model;

[0025] Figure 8 This is a cross-sectional view of the rubber pad of this utility model.

[0026] Legend:

[0027] 1. Expansion tank; 2. One-way vent valve; 201. Limiting groove; 202. Limiting block; 203. Pad; 204. Slot; 205. Threaded block; 206. L-shaped part; 3. Pressure gauge; 301. Mounting groove; 302. Rubber pad; 4. Strap groove; 5. Flat surface; 6. Chamfer; 7. Bevel; 8. Inner groove. Detailed Implementation

[0028] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] Reference Figures 1-8A battery cluster liquid cooling circuit exhaust buffer device includes an expansion tank 1. Pipes are fixed to both ends of the expansion tank 1, and the pipe surfaces are covered with an insulation layer. A rectangular groove is formed at the top front of the expansion tank 1. A one-way exhaust valve 2 is fixed to the bottom of the inner wall of the rectangular groove. Multiple limiting grooves 201 are formed on the inner wall of the rectangular groove. Limiting blocks 202 are slidably connected to the inner wall of the limiting grooves 201. The surface of the limiting blocks 202 is fixed to the bottom of the inner wall of the limiting grooves 201 by bolts. A pad 203 is fixed to one end of the limiting blocks 202. A slot 204 is formed on the surface of the expansion tank 1. A threaded block 205 is fixed to the inner wall of the slot 204 by bolts. An L-shaped... Part 206, the surface of L-shaped part 206 and the surface of pad 203 are both in contact with the circumference of one-way vent valve 2. By installing one-way vent valve 2 into expansion tank 1, when the internal air pressure of expansion tank 1 is too high, one-way vent valve 2 can automatically release some air to reduce the internal air pressure, preventing the expansion tank from rupturing due to excessive air pressure or the coolant in the cold circulation circuit from overflowing due to gas compression. Pad 203 and L-shaped part 206 are both fixed to expansion tank 1 and in contact with one-way vent valve 2, preventing damage to the fixing point of one-way vent valve 2 and expansion tank 1 during vehicle movement, battery pack transportation and venting, and protecting one-way vent valve 2 from scratches.

[0031] The back of the expansion tank 1 is set as a flat surface 5. By setting the back of the expansion tank 1 as a flat surface 5, the expansion tank 1 and the battery cluster are tightly fitted, preventing poor fixing effect caused by imprecise fitting between the two.

[0032] The expansion tank 1 has multiple strap grooves 4 on its front side. By opening the strap grooves 4, it is easy for workers to temporarily fix the expansion tank 1 to the battery cluster with straps, thereby facilitating the next step of the work and improving work efficiency.

[0033] The expansion tank 1 has an installation groove 301 on the front. A pressure gauge 3 is fixed to the inner wall of the installation groove 301. Rubber pads 302 are fixed to the top and bottom of the inner wall of the installation groove 301. By installing the pressure gauge 3, the staff can observe the air pressure inside the expansion tank 1. Some models of pressure gauge 3 can also update the real-time status to the user in a timely manner, which is convenient for the user to operate in a timely manner.

[0034] The bottom of the inner wall of the mounting groove 301 is chamfered 6. The chamfered corner 6 improves the stability of the angle between the mounting groove 301 and the expansion tank 1, and prevents the pressure gauge 3 from being squeezed out when the air pressure inside the expansion tank 1 is high.

[0035] The top of the inner wall of the mounting groove 301 is chamfered 7. The chamfer 7 reduces the thickness difference caused by the step difference during molding and can guide the staff to place the pressure gauge 3 in the mounting groove 301.

[0036] The surface of the rubber pad 302 has multiple inner grooves 8, which increase the friction force on the pressure gauge 3 when it slides outward, thereby preventing the pressure gauge 3 from falling off.

[0037] The end of the inner groove 8 furthest from the mounting groove 301 is higher than the end of the inner groove 8 closest to the mounting groove 301. After the pressure gauge 3 is installed, it is located at the inner groove 8 closest to the mounting groove 301. The lower height makes it easier to install the pressure gauge 3, while the higher height of the end of the inner groove 8 furthest from the mounting groove 301 further prevents the pressure gauge 3 from falling.

[0038] The working principle of this utility model is as follows: When installing the one-way exhaust valve 2 into the expansion tank 1, the worker can fit the pad 203 against the circumference of the one-way exhaust valve 2, and then insert the one-way exhaust valve 2 into the connecting hole at the bottom of the rectangular groove. At the same time, the limiting block 202 of the pad 203 is aligned with the limiting groove 201 and slid in. Then, the limiting block 202 and the one-way exhaust valve 2 are fixed to the expansion tank 1 and the expansion tank 1 with bolts. Next, the threaded block 205 of the L-shaped part 206 near the center of the expansion tank 1 is inserted into the slot 204. The other threaded block 205 of the L-shaped part 206 is aligned with the threaded hole in the rectangular groove. The threaded blocks 205 are fixed with bolts and fitted against the one-way exhaust valve 2. Then, the pressure gauge 3 is inserted into the installation groove 301 and fixed. The pressure gauge 3 allows the worker to observe the air pressure inside the expansion tank 1. The chamfer 6 improves the stability of the angle between the installation groove 301 and the expansion tank 1 and prevents the installation groove 301 from deforming.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A battery cluster liquid cooling circuit exhaust buffer device comprising an expansion tank (1), characterized in that: The expansion tank (1) has a rectangular groove at the top front. A one-way exhaust valve (2) is fixed to the bottom of the inner wall of the rectangular groove. Multiple limiting grooves (201) are provided on the inner wall of the rectangular groove. Limiting blocks (202) are slidably connected to the inner wall of the limiting grooves (201). The surface of the limiting blocks (202) is fixed to the bottom of the inner wall of the limiting grooves (201) by bolts. A pad (203) is fixed to one end of the limiting blocks (202). The surface of the expansion tank (1) A slot (204) is provided, and a threaded block (205) is fixed to the inner wall of the slot (204) by bolts. An L-shaped part (206) is fixed to the surface of the threaded block (205). The surface of the L-shaped part (206) and the surface of the pad (203) are both in contact with the circumference of the one-way exhaust valve (2). A threaded block (205) is fixed to the other side of the L-shaped part (206). The threaded block (205) is threadedly fixed to the expansion tank (1) by bolts.

2. The battery cluster liquid cooling circuit exhaust buffer device according to claim 1, characterized in that: The back of the expansion tank (1) is set as a flat surface (5).

3. The battery cluster liquid cooling circuit exhaust buffer device according to claim 1, characterized in that: The expansion tank (1) has multiple strap grooves (4) on its front side.

4. The battery cluster liquid cooling circuit exhaust buffer device according to claim 1, characterized in that: The expansion tank (1) has an installation groove (301) on its front side. A pressure gauge (3) is fixed to the inner wall of the installation groove (301). Rubber pads (302) are fixed to the top and bottom of the inner wall of the installation groove (301).

5. The battery cluster liquid cooling circuit exhaust buffer device according to claim 4, characterized in that: The bottom of the inner wall of the mounting groove (301) is chamfered (6).

6. The battery cluster liquid cooling circuit exhaust buffer device according to claim 4, characterized in that: The top of the inner wall of the mounting groove (301) is chamfered (7).

7. The battery cluster liquid cooling circuit exhaust buffer device according to claim 4, characterized in that: The surface of the rubber pad (302) is provided with multiple inner grooves (8).

8. The battery cluster liquid cooling circuit exhaust buffer device according to claim 7, characterized in that: The end of the inner groove (8) away from the mounting groove (301) is higher than the end of the inner groove (8) near the mounting groove (301).

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