Efficient heat dissipation cooling equipment adaptive to new energy automobile power battery

Abstract

The invention discloses efficient heat dissipation cooling equipment adaptive to a new energy automobile power battery. The efficient heat dissipation cooling equipment comprises a battery frame; the liquid cooling plate is fixedly mounted at the bottom of the battery frame; the second cooling system comprises a refrigerant supply pipe, a refrigerant recovery pipe and a side cooling plate, and the refrigerant supply pipe is fixedly mounted on the side wall of the battery frame; a main pipe inlet of the three-way proportional regulating valve A is connected with the cooling liquid supply main pipe, a branch pipe outlet of the three-way proportional regulating valve A is connected with the first connector pipe, and another branch pipe outlet of the three-way proportional regulating valve A is connected with the second refrigerant inlet; a main pipe inlet of the three-way proportional regulating valve B is connected with the cooling liquid return main pipe, a branch pipe outlet of the three-way proportional regulating valve A is connected with the second connector pipe, and another branch pipe outlet of the three-way proportional regulating valve A is connected with the second refrigerant outlet. Compared with the prior art, the invention solves the problem of low heat dissipation and cooling efficiency of the existing new energy automobile power battery which only controls the temperature through the lower side liquid cooling plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a high-efficiency heat dissipation cooling device adapted to new energy vehicle power batteries. BACKGROUND

[0002] The battery pack in a new energy vehicle accounts for 40-50% of the weight of the entire vehicle. The battery pack is placed on the chassis to reduce the center of gravity of the entire vehicle, improve driving stability, avoid occupying the passenger compartment space, realize the design of a flat floor in the vehicle, and protect the battery pack by using the body frame to avoid the risk of short circuit or thermal runaway of the battery pack when colliding, thereby improving collision safety.

[0003] The existing new energy vehicle power battery mainly relies on the liquid cooling plate below the battery pack to achieve temperature control. The circulating coolant in the liquid cooling plate absorbs the heat generated during charging and discharging of the battery through heat conduction and convection. However, when the power battery is cooled only by the lower liquid cooling plate, the cooling of the upper and lower sides of the power battery is uneven and the cooling efficiency is low, resulting in low cooling efficiency of the power battery. SUMMARY

[0004] The purpose of the present application is to provide a high-efficiency heat dissipation cooling device adapted to new energy vehicle power batteries to solve the problem of low cooling efficiency of the existing new energy vehicle power batteries by only using the lower liquid cooling plate for temperature control.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a high-efficiency heat dissipation cooling device adapted to new energy vehicle power batteries, comprising: a battery frame; a liquid cooling plate fixedly installed at the bottom of the battery frame, the liquid cooling plate comprising a flow channel plate, a cover plate, a first joint pipe and a second joint pipe, the flow channel plate being provided with a first cooling flow channel, the cover plate being fixedly installed on the flow channel plate, the cover plate being provided with a first coolant inlet and a first coolant outlet, the first joint pipe being fixedly installed on the cover plate at the first coolant inlet, and the second joint pipe being fixedly installed on the cover plate at the first coolant outlet; a second cooling system comprising a coolant supply pipe, a coolant recovery pipe and a side cooling plate, the coolant supply pipe being fixedly installed on the side wall of the battery frame, one end of the coolant supply pipe being closed and the opposite end being provided with a second coolant inlet, a plurality of first joints being arranged along the length direction of the coolant supply pipe, the coolant recovery pipe being fixedly installed on the side wall of the battery frame, one end of the coolant recovery pipe being closed and the opposite end being provided with a second coolant outlet, a plurality of second joints being arranged along the length direction of the coolant recovery pipe, and the second cooling flow channel being arranged in the side cooling plate, the liquid inlet of the side cooling plate being connected to the first joint and the liquid outlet being connected to the second joint; Three-way proportional regulating valve A, the main pipe inlet is connected with the cooling liquid supply main pipe, one branch pipe outlet of the three-way proportional regulating valve A is connected with the first joint pipe, and the other branch pipe outlet is connected with the second refrigerant inlet; Three-way proportional regulating valve B, the main pipe inlet is connected with the cooling liquid return main pipe, one branch pipe outlet of the three-way proportional regulating valve A is connected with the second joint pipe, and the other branch pipe outlet is connected with the second refrigerant outlet.

[0006] ‌As a further description of the above technical solution: The cover plate is provided with a plurality of groups of grooves on the side surface facing the flow channel plate, one group of grooves comprises two grooves arranged in parallel, the groove positions correspond to the transverse flow channel sections of the first cooling flow channels, the grooves form first convex ribs on the back surface of the cover plate, and the bottom of the side cooling plate is inserted between the two first convex ribs formed by the one group of grooves.

[0007] As a further description of the above technical solution: The side cooling plate is detachably mounted on the refrigerant supply pipe.

[0008] As a further description of the above technical solution: The liquid inlet of the side cooling plate is connected with the first joint through a first liquid inlet joint, the first liquid inlet joint is inserted into the first joint, a tapered step portion is arranged on the outer side of the first liquid inlet joint, a connecting sleeve is sleeved on the first liquid inlet joint, and the connecting sleeve is threadedly connected to the first joint.

[0009] As a further description of the above technical solution: A rubber sealing ring is arranged at the end of the first liquid inlet joint, and the rubber sealing ring contacts the inner wall of the first joint.

[0010] As a further description of the above technical solution: A plurality of pressing plates are arranged on the battery frame, and the pressing plates are arranged at intervals between the side cooling plates.

[0011] As a further description of the above technical solution: The pressing plate is in the shape of a Chinese character "j", and comprises a U-shaped main body and a bent edge, and the bent edges are symmetrically arranged on the two sides of the U-shaped main body.

[0012] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are: 1、In the present application, the battery packs of the new energy automobile power battery in the battery frame are placed on the liquid cooling plate, and the side cooling plates are arranged between the side walls of the adjacent two battery packs, and the side cooling plates contact the battery packs, so that the side surfaces of the battery packs of the power battery are cooled and cooled through the side cooling plates, and the bottom is cooled and cooled through the liquid cooling plate, thereby solving the problem of low cooling efficiency of the existing new energy automobile power battery through only the lower liquid cooling plate.

[0013] 2、The liquid cooling plate and the second cooling system in the application are supplied with and recovered from refrigerant through the same cooling liquid supply main pipe and cooling liquid return main pipe, the refrigerant inlet and outlet of the liquid cooling plate and the second cooling system are adjusted by the three-way proportional adjusting valve to adjust the cooling liquid flow between the two, adjust the cooling efficiency between the bottom area of the power battery and the battery module, and flexibly adjust the cooling effect of the side and bottom of the power battery according to the requirement. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a structural schematic diagram of a high-efficiency heat dissipation cooling device suitable for a new energy automobile power battery.

[0016] Figure 2 It is a structural split schematic diagram of a high-efficiency heat dissipation cooling device suitable for a new energy automobile power battery.

[0017] Figure 3 It is an installation schematic diagram of a side cooling plate in a high-efficiency heat dissipation cooling device suitable for a new energy automobile power battery.

[0018] Figure 4 It is a structural schematic diagram of a side cooling plate in a high-efficiency heat dissipation cooling device suitable for a new energy automobile power battery.

[0019] Figure 5 It is a structural split schematic diagram of a liquid cooling plate in a high-efficiency heat dissipation cooling device suitable for a new energy automobile power battery.

[0020] LEGEND 1, battery frame; 11, pressing plate; 2, liquid cooling plate; 21, flow channel plate; 22, cover plate; 221, first convex rib; 23, first joint pipe; 24, second joint pipe; 3, refrigerant supply pipe; 31, first joint; 4, refrigerant recovery pipe; 5, side cooling plate; 51, first liquid inlet joint; 511, conical step part; 512, connecting sleeve; rubber 513, sealing ring. DETAILED DESCRIPTION

[0021] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application. Embodiment 1

[0023] Please refer to Figures 1-5 The present application provides a technical solution: an efficient heat dissipation cooling device suitable for new energy vehicle power battery, comprising: a battery frame 1; a liquid cooling plate 2 fixedly installed at the bottom of the battery frame 1, the liquid cooling plate 2 comprising a flow channel plate 21, a cover plate 22, a first joint pipe 23 and a second joint pipe 24, the flow channel plate 21 being provided with a first cooling flow channel, the cover plate 22 being fixedly installed on the flow channel plate 21, the cover plate 22 being provided with a first coolant inlet and a first coolant outlet, the first joint pipe 23 being fixedly installed on the cover plate 22 at the first coolant inlet, and the second joint pipe 24 being fixedly installed on the cover plate 22 at the first coolant outlet; a second cooling system comprising a coolant supply pipe 3, a coolant recovery pipe 4 and a side cooling plate 5, the coolant supply pipe 3 being fixedly installed on the side wall of the battery frame 1, one end of the coolant supply pipe 3 being closed and the opposite end being provided with a second coolant inlet, the coolant supply pipe 3 being provided with a plurality of first joints 31 arranged along the length direction of the coolant supply pipe 3, the coolant recovery pipe 4 being fixedly installed on the side wall of the battery frame 1, one end of the coolant recovery pipe 4 being closed and the opposite end being provided with a second coolant outlet, the coolant recovery pipe 4 being provided with a plurality of second joints arranged along the length direction of the coolant recovery pipe 4, and the side cooling plate 5 being provided with a second cooling flow channel, the liquid inlet of the side cooling plate 5 being connected to the first joint 31 and the liquid outlet being connected to the second joint; a three-way proportional regulating valve A, a main pipe inlet of the three-way proportional regulating valve A being connected to a cooling liquid supply main pipe 6, one branch pipe outlet of the three-way proportional regulating valve A being connected to the first joint pipe 23 and the other branch pipe outlet being connected to the second coolant inlet of the coolant supply pipe 3; a three-way proportional regulating valve B, a main pipe inlet of the three-way proportional regulating valve B being connected to a cooling liquid recovery main pipe 7, one branch pipe outlet of the three-way proportional regulating valve A being connected to the second joint pipe 24 and the other branch pipe outlet being connected to the second coolant outlet of the coolant recovery pipe 4.

[0024] Working principle: the battery packs of the new energy vehicle power battery in the battery frame 1 are placed on the liquid cooling plate 2, and the side cooling plate 5 is arranged between the side walls of two adjacent battery packs, the side cooling plate 5 contacts the battery pack, so that the side of the battery pack of the power battery is cooled and cooled through the side cooling plate 5, and the bottom is cooled and cooled through the liquid cooling plate 2, solving the problem of low cooling efficiency of the existing new energy vehicle power battery through only the lower liquid cooling plate. The liquid cooling plate 2 and the second cooling system are supplied with refrigerant through the same cooling liquid supply main pipe 6 and the cooling liquid return main pipe 7, and the refrigerant inlet and outlet of the liquid cooling plate 2 and the second cooling system are adjusted by the three-way proportional adjusting valve to adjust the cooling liquid flow between them, adjust the cooling efficiency of the area between the power battery bottom area and the battery module, so that the cooling effect of the side and bottom of the power battery can be flexibly adjusted according to the demand. Embodiment 2

[0025] This embodiment further makes the following technical solutions as improvements on the basis of the above-mentioned embodiments: the cover plate 22 is provided with a plurality of groups of grooves on one side surface facing the flow channel plate 21, one group of grooves includes two grooves arranged in parallel, the groove position corresponds to the transverse flow channel section of the first cooling flow channel, the transverse flow channel section of the first cooling flow channel is a straight flow channel extending along the width direction of the liquid cooling plate 2, the groove forms a first convex rib 221 on the back of the cover plate 22, and the bottom of the side cooling plate 5 is inserted between the two first convex ribs 221 formed by one group of grooves.

[0026] The protrusion formed at the groove on the cover plate 22 reduces the flow rate at this position, so that the flow rate below the battery pack is fast, the heat exchange efficiency of the liquid cooling plate and the battery pack is improved, and the anti-deformation ability of the cover plate of the liquid cooling plate is improved, thereby improving the overall anti-deformation ability and reliability of the liquid cooling plate.

[0027] In addition, the two first convex ribs 221 formed by one group of grooves position the side cooling plate 5, effectively preventing displacement of the side cooling plate 5. Embodiment 3

[0028] This embodiment further makes the following technical solutions as improvements on the basis of the above-mentioned embodiments: the side cooling plate 5 is detachably mounted on the refrigerant supply pipe 3.

[0029] The liquid inlet of the side cooling plate 5 is connected to the first joint 31 through the first liquid inlet joint 51, the first liquid inlet joint 51 is inserted into the first joint 31, a tapered step portion 511 is arranged on the outside of the first liquid inlet joint 51, a connecting sleeve 512 is sleeved on the first liquid inlet joint 51, the connecting sleeve 512 is threadedly connected to the first joint 31, the tapered step portion 511 blocks the connecting sleeve 512 from being separated from the first liquid inlet joint 51, the connection between the first liquid inlet joint 51 and the first joint 31 is realized, and the detachability of the side cooling plate 5 is realized.

[0030] Similarly, the outlet of the side cooling plate 5 is connected to the second joint of the refrigerant recovery pipe 4 through a second outlet joint, which has the same structure and installation method as the first inlet joint 51. Embodiment 4

[0031] In this embodiment, the first inlet joint 51 is provided with a rubber sealing ring 513 at the end, which contacts the inner wall of the first joint 31.

[0032] The first inlet joint 51 is inserted into the insertion slot on the inner wall of the first joint 31, and the end face of the rubber sealing ring 513 contacts the bottom surface of the insertion slot, effectively preventing leakage between the first inlet joint 51 and the first joint 31. Embodiment 5

[0033] In this embodiment, the battery frame 1 is provided with a plurality of pressing plates 11, which are arranged at intervals with the side cooling plate 5. The pressing plate 11 is in the shape of a "J" character, and includes a U-shaped body and a bent edge. The U-shaped body is provided with symmetrically arranged bent edges on both sides.

[0034] The bent edges at the upper and lower ends of the U-shaped body respectively extrude the refrigerant supply pipe 3 and the refrigerant recovery pipe 4. The recessed U-shaped body is fixed on the battery frame 1 by bolts or welding, avoiding the protruding bent edge of the connection structure of the pressing plate 11, and avoiding affecting the battery pack.

[0035] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles, characterized in that, Comprising: Battery frame; Liquid cooling plate, fixedly installed at the bottom of the battery frame, the liquid cooling plate includes a flow channel plate, a cover plate, a first joint pipe and a second joint pipe, a first cooling flow channel is provided on the flow channel plate, the cover plate is fixedly installed on the flow channel plate, a first refrigerant inlet and a first refrigerant outlet are provided on the cover plate, the first joint pipe is fixedly installed on the cover plate at the first refrigerant inlet, and the second joint pipe is fixedly installed on the cover plate at the first refrigerant outlet; Second cooling system, including a refrigerant supply pipe, a refrigerant recovery pipe and a side cooling plate, the refrigerant supply pipe is fixedly installed on the side wall of the battery frame, one end of the refrigerant supply pipe is closed, and a second refrigerant inlet is provided at the opposite end, a plurality of first joints are arranged along the length direction of the refrigerant supply pipe, the refrigerant recovery pipe is fixedly installed on the side wall of the battery frame, one end of the refrigerant recovery pipe is closed, and a second refrigerant outlet is provided at the opposite end, a plurality of second joints are arranged along the length direction of the refrigerant recovery pipe, a second cooling flow channel is provided in the side cooling plate, and the liquid inlet of the side cooling plate is connected to the first joint and the liquid outlet is connected to the second joint; Three-way proportional control valve A, whose main pipe inlet is connected to the coolant supply main pipe, one branch outlet of the three-way proportional control valve A is connected to the first joint pipe, and the other branch outlet is connected to the second refrigerant inlet; Three-way proportional control valve B, whose main pipe inlet is connected to the coolant return main pipe, one branch outlet of the three-way proportional control valve A is connected to the second joint pipe, and the other branch outlet is connected to the second refrigerant outlet.

2. The high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles according to claim 1, characterized in that, A plurality of groups of grooves are provided on the surface of the cover plate facing the flow channel plate, a group of grooves includes two grooves arranged in parallel, the positions of the grooves correspond to the transverse flow channel segments of the first cooling flow channel, and the grooves form a first rib on the back of the cover plate, and the bottom of the side cooling plate is inserted between the two first ribs formed by a group of the grooves.

3. The high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles according to claim 1, characterized in that, The side cooling plate is detachably installed on the refrigerant supply pipe.

4. The high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles according to claim 3, characterized in that, The liquid inlet of the side cooling plate is connected to the first joint through a first liquid inlet joint, the first liquid inlet joint is inserted into the first joint, a conical step portion is provided on the outer side of the first liquid inlet joint, and a connecting sleeve is sleeved on the first liquid inlet joint, and the connecting sleeve is threadedly connected to the first joint.

5. The high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles according to claim 4, characterized in that, A rubber sealing ring is provided at the end of the first liquid inlet joint, and the rubber sealing ring contacts the inner wall of the first joint.

6. The high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles according to claim 1, characterized in that, A plurality of pressing plates are provided on the battery frame, and the pressing plates are arranged at intervals with the side cooling plate.

7. The high-efficiency heat dissipation and cooling device adapted to the power battery of new energy vehicles according to claim 6, characterized in that, The pressing plate is in a "ji" shape, and the pressing plate includes a U-shaped main body and a bent edge, and the bent edges are symmetrically arranged on both sides of the U-shaped main body.

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