Thermal management system for automobile power battery

Abstract

The invention provides an automobile power battery thermal management system which comprises a battery chassis, the upper surface of the battery chassis is connected with a bottom temperature control mechanism and an external temperature control mechanism, and the top end of the bottom temperature control mechanism is connected with an automobile battery; the bottom temperature control mechanism comprises a plurality of liquid cooling plates connected to the interior of the battery chassis, and liquid conveying parts connected to one sides of plate bodies of the liquid cooling plates; the external temperature control mechanism comprises a radiator connected to the interior of the battery chassis, a plurality of heat dissipation pipelines are connected to the interior of the radiator, and the heat dissipation pipelines are connected with the adjacent liquid conveying components. Part of heat at the bottom end of the automobile battery is taken away through the second liquid cooling pipe, and the heat is guided to be blown to the outside of the automobile battery through the fan, so that the heat outside the automobile battery is increased, and rapid heating of the automobile battery is facilitated.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of electric vehicles, and particularly relates to an automotive power battery thermal management system. Background Art

[0002] When the heat dissipation effect of the power battery is poor, the temperature of the power battery will rise rapidly, resulting in a decline in the working performance of the power battery. Therefore, an effective power battery thermal management system is very necessary.

[0003] Traditional automotive power battery thermal management systems often heat the battery through a heating pad at the bottom of the power battery. In this method, only the bottom of the battery can be heated, and the heating is not uniform enough, which affects the use of the power battery. Summary of the Invention

[0004] The present invention mainly provides an automotive power battery thermal management system to solve the technical problems raised in the above background art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0006] An automotive power battery thermal management system includes a battery chassis, and a bottom temperature control mechanism and an external temperature control mechanism are connected to the upper surface of the battery chassis. The top of the bottom temperature control mechanism is connected to an automotive battery;

[0007] The bottom temperature control mechanism includes a plurality of liquid cooling plates connected inside the battery chassis and an infusion component connected to one side of the plate body of the liquid cooling plate;

[0008] The external temperature control mechanism includes a cold row connected inside the battery chassis, and a plurality of heat dissipation pipes are connected inside the cold row. The heat dissipation pipes are connected to adjacent infusion components.

[0009] Further, a first liquid cooling pipe and a second liquid cooling pipe are connected inside the plate body of the liquid cooling plate, and the water inlet ends of the first liquid cooling pipe and the second liquid cooling pipe are connected to each other.

[0010] Further, the infusion component includes an infusion box connected to the upper surface of the battery chassis, a first channel and a second channel provided at one end of the infusion box. The first channel and the second channel are arranged in sequence from top to bottom. The first channel is communicated with the first liquid cooling pipe, and the second channel is communicated with the second liquid cooling pipe.

[0011] Further, a third channel is provided at one end of the infusion box away from the first channel, and a solenoid valve is connected to the box body of the infusion box. The solenoid valve is communicated with the first channel, the second channel and the third channel.

[0012] Further, the inlet end of the heat dissipation pipeline is communicated with the third channel, and the water outlet end of the heat dissipation pipeline is connected to the inlet end of the adjacent first liquid cooling pipe.

[0013] Further, the first liquid cooling pipes are all arranged in an S shape within the plate body of the liquid cooling plate, and the second liquid cooling pipes are arranged in a U shape within the plate body of the liquid cooling plate.

[0014] Further, one end of the cold radiator is connected with a water pump, and the inlet end of the water pump is connected to the adjacent third channel.

[0015] Further, the outlet end of the water pump is connected with a water outlet pipe, the water outlet pipe is inserted at the bottom end of the cold radiator, and the end of the water outlet pipe far away from the water pump is connected to the inlet end of the adjacent first liquid cooling pipe.

[0016] Further, an exhaust duct is connected to one side of the battery chassis, and the air outlet end of the exhaust duct is connected to the automotive air filter element.

[0017] Further, a plurality of fans are connected to one side surface of the cold radiator, a forward and reverse rotation motor is connected to one side of the fan, and the fan blades of the fan are driven by the forward and reverse rotation motor.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] Firstly, the present invention closes the circulation of the first liquid cooling pipe through the solenoid valve and only opens the second liquid cooling pipe. In this way, part of the heat at the bottom end of the automotive battery is taken away. When the heat-exchanged coolant enters the interior of the heat dissipation pipeline, the heat is guided by the fan to blow towards the outside of the automotive battery, thereby increasing the heat outside the automotive battery to facilitate the rapid heating of the automotive battery.

[0020] Secondly, when the present invention needs to dissipate heat from the automotive battery, the coolant inside the first liquid cooling pipe and the second liquid cooling pipe exchanges heat with the bottom end of the automotive battery to dissipate heat from the automotive battery. At the same time, through the rotation of the fan, the heat generated by the automotive battery is guided to be discharged.

[0021] The following will explain the present invention in detail in combination with the attached drawings and specific embodiments. Description of the Drawings

[0022] Figure 1 is the structural schematic diagram of the present invention;

[0023] Figure 2 is the schematic diagram of the present invention;

[0024] Figure 3 is the cross-sectional view of the liquid cooling plate of the present invention;

[0025] Figure 4 is the structural schematic diagram of the liquid infusion component of the present invention;

[0026] Figure 5 This is a schematic structural diagram of the cold row of the present invention;

[0027] Figure 6 This is a schematic structural diagram of the automotive battery of the present invention.

[0028] In the figure: 10, battery chassis; 11, exhaust duct; 20, temperature control mechanism; 21, liquid cooling plate; 211, first liquid cooling pipe; 212, second liquid cooling pipe; 22, liquid infusion component; 221, liquid infusion box; 222, first channel; 223, second channel; 224, solenoid valve; 225, third channel; 226, water outlet pipe; 30, external temperature control mechanism; 31, heat dissipation pipeline; 311, water pump; 32, cold row; 321, fan; 322, forward and reverse motor; 40, automotive battery. Specific embodiments

[0029] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] The embodiment of the present application provides a thermal management system for an automotive power battery. The schematic diagram of the thermal management system for the automotive power battery is as Figure 1-6 shown. The thermal management system for the automotive power battery includes a battery chassis 10. The upper surface of the battery chassis 10 is connected with a bottom temperature control mechanism 20 and an external temperature control mechanism 30. The top end of the bottom temperature control mechanism 20 is connected with an automotive battery 40;

[0033] The bottom temperature control mechanism 20 includes a plurality of liquid cooling plates 21 connected to the inside of the battery chassis 10, and an infusion component 22 connected to one side of the plate body of the liquid cooling plate 21;

[0034] The external temperature control mechanism 30 includes a cold row 32 connected to the inside of the battery chassis 10. A plurality of heat dissipation pipes 31 are connected to the inside of the cold row 32, and the heat dissipation pipes 31 are connected to the adjacent infusion components 22.

[0035] Optionally, please refer to Appendix Figure 2 and 3 , a first liquid cooling pipe 211 and a second liquid cooling pipe 212 are connected inside the plate body of the liquid cooling plate 21, and the water inlet ends of the first liquid cooling pipe 211 and the second liquid cooling pipe 212 are connected to each other.

[0036] In this embodiment, heat exchange is carried out between the coolant inside the first liquid cooling pipe 211 and the second liquid cooling pipe 212 and the bottom end of the vehicle battery 40, so as to dissipate heat from the vehicle battery 40.

[0037] Optionally, please refer to Appendix Figure 2 and 4 , the infusion component 22 includes an infusion box 221 connected to the upper surface of the battery chassis 10, a first channel 222 and a second channel 223 provided at one end of the infusion box 221. The first channel 222 and the second channel 223 are arranged in sequence from top to bottom. The first channel 222 is communicated with the first liquid cooling pipe 211, and the second channel 223 is communicated with the second liquid cooling pipe 212.

[0038] In this embodiment, through the arrangement of the first channel 222 and the second channel 223, the connection between the infusion component 22 and the first liquid cooling pipe 211 and the second liquid cooling pipe 212 is completed.

[0039] Optionally, please refer to Appendix Figure 2 and 4 , a third channel 225 is provided at one end of the infusion box 221 away from the first channel 222. An electromagnetic valve 224 is connected to the box body of the infusion box 221, and the electromagnetic valve 224 is communicated with the first channel 222, the second channel 223 and the third channel 225.

[0040] In this embodiment, through the arrangement of the third channel 225, the circulation between the infusion component 22 and the heat dissipation pipe 31 is completed.

[0041] Optionally, please refer to Appendix Figure 2 and 5 , the inlet end of the heat dissipation pipe 31 is communicated with the third channel 225, and the outlet end of the heat dissipation pipe 31 is connected to the inlet end of the adjacent first liquid cooling pipe 211.

[0042] In this embodiment, the coolant flows through the first liquid cooling pipe 211 and the second liquid cooling pipe 212 to complete heat exchange with the bottom of the vehicle battery 40. After heat exchange, the coolant enters the heat dissipation pipe 31 through the liquid delivery component 22. Since the heat dissipation pipe 31 is located inside the cold radiator 32, the heat of the coolant in the heat dissipation pipe 31 is dissipated, so that the cooled coolant enters the first liquid cooling pipe 211 and the second liquid cooling pipe 212 of another liquid cooling plate 21, so as to maintain the heat dissipation capacity of the coolant in each liquid cooling plate 21.

[0043] Optionally, please refer to the appendix Figure 3 The first liquid cooling pipes 211 are all arranged in an S shape within the plate body of the liquid cooling plate 21, and the second liquid cooling pipes 212 are arranged in a U shape within the plate body of the liquid cooling plate 21.

[0044] In this embodiment, the first liquid cooling pipes 211 with a relatively dense pipe body distribution cooperate with the second liquid cooling pipes 212 with a relatively loose pipe body distribution to fully dissipate heat from the bottom end of the vehicle battery 40.

[0045] Optionally, please refer to the appendix Figure 2 One end of the cold radiator 32 is connected with a water pump 311, and the water inlet end of the water pump 311 is connected with the adjacent third channel 225.

[0046] The water outlet end of the water pump 311 is connected with a water outlet pipe 226. The water outlet pipe 226 is inserted into the bottom end of the cold radiator 32, and the end of the water outlet pipe 226 away from the water pump 311 is connected with the water inlet end of the adjacent first liquid cooling pipe 211.

[0047] In this embodiment, through the setting of the water pump 311, the coolant in the liquid delivery component 22 at the end is pumped out and conveyed into the water outlet pipe 226. Since the water pipe 226 is connected with the adjacent third channel 225, under the action of the water pump 311, the coolant circulates. Since the water outlet pipe 226 is inserted into the bottom end of the cold radiator 32, the bottom end of the cold radiator 32 is used for heat dissipation to maintain the heat exchange capacity of the coolant.

[0048] Optionally, please refer to the appendix Figure 1 One side of the battery chassis 10 is connected with an exhaust air pipe 11, and the air outlet end of the exhaust air pipe 11 is connected with the vehicle air filter element.

[0049] In this embodiment, when the vehicle battery 40 is in use, the hot air guided by the fan 321 is discharged through the exhaust air pipe 11.

[0050] Optionally, please refer to the appendix Figure 1 and 2, on one side surface of the cold radiator 32, a plurality of fans 321 are connected. On one side of the fans 321, a forward and reverse motor 322 is connected, and the fan blades of the fans 321 are driven by the forward and reverse motor 322.

[0051] In this embodiment, the rotation of the fans 321 is controlled by the forward and reverse motor 322 to guide the air flow through the rotating fan blades. The rotation direction of the fans 321 is controlled by the forward and reverse motor 322, and the air flow direction of the hot air is changed by changing the rotation direction of the fan blades of the fans 321.

[0052] The specific operation method of the present invention is as follows:

[0053] When using the automotive power battery thermal management system and it is necessary to dissipate heat from the automotive battery 40, heat exchange is carried out between the coolant inside the first liquid cooling pipe 211 and the second liquid cooling pipe 212 and the bottom end of the automotive battery 40, so as to dissipate heat from the automotive battery 40. At the same time, through the rotation of the fans 321, the heat generated by the automotive battery 40 is guided to be discharged;

[0054] When heating the automotive battery 40, the flow of the first liquid cooling pipe 211 is closed by the solenoid valve 224, and only the second liquid cooling pipe 212 is opened. In this way, part of the heat at the bottom end of the automotive battery 40 is taken away, and when the heat-exchanged coolant enters the inside of the heat dissipation pipe 31, the fans 321 are used to guide the heat to blow to the outside of the automotive battery 40, thereby increasing the heat outside the automotive battery 40 to facilitate the rapid heating of the automotive battery 40.

[0055] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A thermal management system for an automotive power battery, comprising a battery chassis (10), characterized in that: The upper surface of the battery chassis (10) is connected to a bottom temperature control mechanism (20) and an external temperature control mechanism (30), and the top of the bottom temperature control mechanism (20) is connected to a car battery (40); The bottom temperature control mechanism (20) comprises a plurality of liquid cooling plates (21) connected to the inside of the battery chassis (10), and a liquid infusion component (22) connected to one side of the plate body of the liquid cooling plate (21); The external temperature control mechanism (30) comprises a cold row (32) connected to the inside of the battery chassis (10), the inside of the cold row (32) is connected to a plurality of heat dissipation pipes (31), and the heat dissipation pipes (31) are connected to adjacent infusion components (22).

2. The automotive power battery thermal management system according to claim 1, characterized in that: A first liquid cooling tube (211) and a second liquid cooling tube (212) are connected within the plate body of the liquid cooling plate (21), and water inlet ends of the first liquid cooling tube (211) and the second liquid cooling tube (212) are connected to each other.

3. The automotive power battery thermal management system according to claim 1, characterized in that: The infusion component (22) comprises an infusion box (221) connected to the upper surface of the battery chassis (10), a first channel (222) and a second channel (223) arranged at one end of the infusion box (221), wherein the first channel (222) and the second channel (223) are arranged in sequence from top to bottom, the first channel (222) is connected to the first liquid cooling tube (211), and the second channel (223) is connected to the second liquid cooling tube (212).

4. The automotive power battery thermal management system according to claim 3, characterized in that: A third channel (225) is provided at one end of the infusion box (221) away from the first channel (222), and a solenoid valve (224) is connected to the box body of the infusion box (221), and the solenoid valve (224) is in communication with the first channel (222), the second channel (223), and the third channel (225).

5. The automotive power battery thermal management system according to claim 4, characterized in that: The inlet end of the heat dissipation pipe (31) is connected to the third channel (225), and the water outlet end of the heat dissipation pipe (31) is connected to the water inlet end of the adjacent first liquid cooling pipe (211).

6. The automotive power battery thermal management system according to claim 5, characterized in that: The first liquid cooling tubes (211) are arranged in an S shape inside the plate body of the liquid cooling plate (21), and the second liquid cooling tubes (212) are arranged in a U shape inside the plate body of the liquid cooling plate (21).

7. The automotive power battery thermal management system according to claim 1, characterized in that: One end of the cold row (32) is connected to a water pump (311), and a water inlet end of the water pump (311) is connected to an adjacent third channel (225).

8. The automotive power battery thermal management system according to claim 7, characterized in that: The water outlet end of the water pump (311) is connected to a water outlet pipe (226), and the water outlet pipe (226) is plugged into the bottom end of the radiator (32). One end of the water outlet pipe (226) away from the water pump (311) is connected to the water inlet end of the adjacent first liquid cooling pipe (211).

9. The automotive power battery thermal management system according to claim 1, characterized in that: An exhaust pipe (11) is connected to one side of the battery chassis (10), and an air outlet end of the exhaust pipe (11) is connected to an automobile air filter element.

10. The automotive power battery thermal management system according to claim 1, characterized in that: A plurality of fans (321) are connected to a surface of one side of the radiator (32), a forward and reverse motor (322) is connected to one side of the fan (321), and the blades of the fan (321) are driven by the forward and reverse motor (322).

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