Combined type electric automobile liquid cooling plate structure

Abstract

A combined type electric automobile liquid cooling plate structure comprises a liquid cooling plate upper plate, a liquid cooling plate lower plate and two end sealing plates, the lower end face of the liquid cooling plate upper plate is provided with a first cooling medium flow channel, the upper end face of the liquid cooling plate lower plate is provided with a second cooling medium flow channel, and the two ends of the first cooling medium flow channel are provided with a first liquid inlet and a first liquid outlet respectively. A second liquid inlet and a second liquid outlet are formed in the two ends of the second cooling medium runner respectively; the liquid cooling plate upper plate and the liquid cooling plate lower plate are rectangular plates with the same overall dimension, the liquid cooling plate upper plate and the liquid cooling plate lower plate are buckled up and down and connected through heat conduction silica gel, the cooling medium first flow channel and the cooling medium second flow channel are located between the liquid cooling plate upper plate and the liquid cooling plate lower plate, and the left and right ends of the cooling medium first flow channel are blocked through the two end sealing plates; and the first liquid inlet and the first liquid outlet of the upper plate of the liquid cooling plate are opposite to the second liquid inlet and the second liquid outlet of the lower plate of the liquid cooling plate in arrangement position. The whole temperature of the battery module is balanced, and the purposes of ensuring the safety performance of the battery and prolonging the service life of the battery are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile battery technology field, concretely is a combined type electric automobile liquid cooling plate structure. BACKGROUND

[0002] The power source of new energy electric automobile comes from lithium battery pack, and the lithium battery pack is composed of a plurality of series connection battery modules, and one battery module includes a plurality of series-parallel connection single batteries. In the driving process of the electric automobile, since there is a complex electrochemical reaction in the charging and discharging of the lithium battery, a large amount of heat is emitted while providing power, resulting in an increase in the internal temperature of the battery pack, and an excessively high temperature environment can affect the service life of the battery, thereby reducing the reliability of the whole vehicle, so the cooling of the battery plays an important role in ensuring the safety performance of the electric automobile.

[0003] At present, the relatively mature battery cooling technology is water cooling heat dissipation, that is, heat exchange is carried out through the water cooling plate placed at the bottom of the battery module to take away the heat generated by the battery and reduce the temperature of the battery. However, since the cooling medium in the flow channel of the existing water cooling plate flows in a single direction, the temperature difference between the inlet and outlet of the water cooling plate is large, it is difficult to balance the overall temperature of the battery module, thereby affecting the service life and safety of the battery. UTILITARY MODEL

[0004] The utility model provides a combined type electric automobile liquid cooling plate structure, which aims to balance the overall temperature of the battery module by arranging cooling medium flow channels on the upper plate and the lower plate of the liquid cooling plate, and taking away the heat generated by the battery by using the cooling medium in the two flow channels flowing in opposite directions, so as to ensure the safety performance of the battery and prolong the service life of the battery.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A combined type electric automobile liquid cooling plate structure, comprising a liquid cooling plate upper plate, a liquid cooling plate lower plate and two end sealing plates, a cooling medium first flow channel is arranged on the lower end face of the liquid cooling plate upper plate, a cooling medium second flow channel is arranged on the upper end face of the liquid cooling plate lower plate, a first liquid inlet and a first liquid outlet are arranged at the two ends of the cooling medium first flow channel respectively, and a second liquid inlet and a second liquid outlet are arranged at the two ends of the cooling medium second flow channel respectively; the liquid cooling plate upper plate and the liquid cooling plate lower plate are rectangular plates with the same outer dimensions, and they are connected by heat-conducting silica gel, the cooling medium first flow channel and the cooling medium second flow channel are located between the two plates, and the two ends of the cooling medium first flow channel are sealed by the two end sealing plates; the first liquid inlet and the first liquid outlet of the liquid cooling plate upper plate and the second liquid inlet and the second liquid outlet of the liquid cooling plate lower plate are arranged in opposite positions, so that the cooling medium in the cooling medium first flow channel and the cooling medium second flow channel flows in opposite directions.

[0007] The cooling medium first flow channel is a horizontal straight flow channel, and is located at the four peripheral edge portions of the upper plate of the liquid cooling plate.

[0008] The cooling medium second flow channel is a horizontal S-shaped flow channel, and is located at the middle portion of the lower plate of the liquid cooling plate.

[0009] The cooling medium first flow channel and the cooling medium second flow channel are both rectangular cross-section channels.

[0010] The cooling medium first flow channel is a double-channel structure.

[0011] The utility model provides a combined electric automobile liquid cooling plate structure, it is assembled as an organic whole through two same size liquid cooling plate upper plate, liquid cooling plate lower plate, increased the heat exchange area between cooling medium and battery module, has saved the space while improving battery pack cooling efficiency. The utility model can design the flow channel structure and position of liquid cooling plate upper plate, liquid cooling plate lower plate according to different vehicle models, through the flow of cooling medium in cooling medium first flow channel and / or cooling medium second flow channel is adjusted, realizes the control to the temperature in battery pack. The utility model adopts the opposite arrangement structure of first liquid inlet, first liquid outlet of liquid cooling plate upper plate and second liquid inlet, second liquid outlet of liquid cooling plate lower plate, makes the reverse flow of cooling medium in cooling medium first flow channel and cooling medium second flow channel, carries away the heat generated by battery, thereby balances the overall temperature of battery module, reaches the purpose of guaranteeing the safety performance of battery, prolonging the life of battery. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the whole structure schematic diagram of combined electric automobile liquid cooling plate;

[0013] Figure 2 It is Figure 1 explosion structure schematic diagram;

[0014] Figure 3 It is liquid cooling plate upper plate structure schematic diagram;

[0015] Figure 4 It is liquid cooling plate lower plate structure schematic diagram.

[0016] Interpretation of each mark in the figure:

[0017] 1 is liquid cooling plate upper plate, 1-1 is first liquid inlet, 1-2 is first liquid outlet, 1-3 is cooling medium first flow channel;

[0018] 2 is two end sealing plate;

[0019] 3 is a liquid cooling plate lower plate, 3-1 is a cooling medium second flow channel, 3-2 is a second liquid outlet, and 3-3 is a second liquid inlet. DETAILED DESCRIPTION

[0020] The utility model is further described below in combination with the drawings and specific embodiments.

[0021] Referring to FIG. 1, Figure 2 , Figure 3 , Figure 4 The utility model provides a combined type electric automobile liquid cooling plate structure, including liquid cooling plate upper plate 1, liquid cooling plate lower plate 3 and two end sealing plate 2, be equipped with cooling medium first flow channel 1-3 at the lower end surface of liquid cooling plate upper plate 1, be equipped with cooling medium second flow channel 3-1 at the upper end surface of liquid cooling plate lower plate 3, liquid cooling plate upper plate 1 and liquid cooling plate lower plate 3 are the rectangular plate of same external dimension, and the upper and lower buckles are connected through heat-conducting silica gel, and cooling medium first flow channel 1-3 and cooling medium second flow channel 3-1 are located between both, and cooling medium first flow channel 1-3 is sealed left and right by two end sealing plate 2.

[0022] Referring to Figure 2 , Figure 3 , Figure 4 The combined type electric automobile liquid cooling plate structure sets first liquid inlet 1-1, first liquid outlet 1-2 at the both ends of cooling medium first flow channel 1-3 of liquid cooling plate upper plate 1 respectively, and sets second liquid inlet 3-3, second liquid outlet 3-2 at the both ends of cooling medium second flow channel 3-1 of liquid cooling plate lower plate 3 respectively.

[0023] Referring to Figure 2 , Figure 3 The combined type electric automobile liquid cooling plate structure sets first liquid inlet 1-1, first liquid outlet 1-2 at the both ends of cooling medium first flow channel 1-3 of liquid cooling plate upper plate 1 respectively, and sets second liquid inlet 3-3, second liquid outlet 3-2 at the both ends of cooling medium second flow channel 3-1 of liquid cooling plate lower plate 3 respectively.

[0024] Referring to Figure 2 , Figure 4 The combined type electric automobile liquid cooling plate structure sets first liquid inlet 1-1, first liquid outlet 1-2 at the both ends of cooling medium first flow channel 1-3 of liquid cooling plate upper plate 1 respectively, and sets second liquid inlet 3-3, second liquid outlet 3-2 at the both ends of cooling medium second flow channel 3-1 of liquid cooling plate lower plate 3 respectively.

[0025] Referring to Figures 1 to 4 The utility model provides a combined type electric automobile liquid cooling plate structure, it is assembled as an organic whole through two same size liquid cooling plate upper plate 1, liquid cooling plate lower plate 2, increased the heat exchange area between cooling medium and battery module, has saved the space while improving battery pack cooling efficiency. The utility model can design the flow channel structure and position of liquid cooling plate upper plate 1, liquid cooling plate lower plate 3 according to different vehicle models, through the flow of cooling medium in cooling medium first flow channel 1-3 and / or cooling medium second flow channel 3-1 is adjusted, realizes the control to the temperature in battery pack. Specific embodiment is:

[0026] I. under the condition that the cooling demand of electric automobile battery pack is low, open the first liquid inlet 1-1 and the first liquid outlet 1-2 of liquid cooling plate upper plate 1, inject circulating flowing cooling liquid into cooling medium first flow channel 1-3, only through the heat exchange between cooling liquid in cooling medium first flow channel 1-3 of liquid cooling plate upper plate 1 and battery pack;

[0027] II. under the condition that the cooling demand of electric automobile battery pack is high, open the second liquid inlet 3-3 and the second liquid outlet 3-2 of liquid cooling plate lower plate 3, inject circulating flowing cooling liquid into cooling medium second flow channel 3-1, only through the heat exchange between cooling liquid in cooling medium second flow channel 3-1 of liquid cooling plate lower plate 3 and battery pack;

[0028] III. under the condition that the cooling demand of electric automobile battery pack is very high, open the first liquid inlet 1-1, the first liquid outlet 1-2 of liquid cooling plate upper plate 1 and the second liquid inlet 3-3 and the second liquid outlet 3-2 of liquid cooling plate lower plate 3, inject circulating flowing cooling liquid into cooling medium first flow channel 1-3 and cooling medium second flow channel 3-1 simultaneously, through the heat exchange between cooling liquid in cooling medium first flow channel 1-3 of liquid cooling plate upper plate 1 and cooling liquid in cooling medium second flow channel 3-1 of liquid cooling plate lower plate 3 and battery pack respectively, due to the opposite arrangement structure of the first liquid inlet 1-1 and the first liquid outlet 1-2 of liquid cooling plate upper plate 1 and the second liquid inlet 3-3 and the second liquid outlet 3-2 of liquid cooling plate lower plate 3, the reverse flow of cooling medium in cooling medium first flow channel 1-3 and cooling medium second flow channel 3-1 carries away the heat generated by battery, thereby balancing the overall temperature of battery module, achieving the purpose of guaranteeing the safety performance of battery and prolonging the service life of battery.

Claims

1. A combined electric vehicle liquid cooling plate structure, characterized in that: The liquid cooling plate includes an upper plate (1), a lower plate (3) and two end sealing plates (2). A first cooling medium flow channel (1-3) is arranged on the lower end surface of the upper plate (1), a second cooling medium flow channel (3-1) is arranged on the upper end surface of the lower plate (3), a first liquid inlet (1-1) and a first liquid outlet (1-2) are arranged at the two ends of the first cooling medium flow channel (1-3), and a second liquid inlet (3-3) and a second liquid outlet (3-2) are arranged at the two ends of the second cooling medium flow channel (3-1). The upper plate (1) and the lower plate (3) are rectangular plates with the same outer dimensions, and are connected by heat-conducting silica gel. The first cooling medium flow channel (1-3) and the second cooling medium flow channel (3-1) are located between the upper plate (1) and the lower plate (3), and the two end sealing plates (2) seal the left and right ends of the first cooling medium flow channel (1-3). The first liquid inlet (1-1) and the first liquid outlet (1-2) of the upper plate (1) are arranged in positions opposite to the second liquid inlet (3-3) and the second liquid outlet (3-2) of the lower plate (3), so that the cooling medium in the first cooling medium flow channel (1-3) and the second cooling medium flow channel (3-1) flows in opposite directions.

2. The modular liquid cooling panel structure for electric vehicles of claim 1, wherein: The first cooling medium flow channel (1-3) is a straight channel arranged horizontally and located at the four peripheral edge portions of the upper plate (1).

3. The modular liquid cooling panel structure for electric vehicles of claim 2, wherein: The second cooling medium flow channel (3-1) is an S-shaped channel arranged horizontally and located at the middle portion of the lower plate (3).

4. The combined electric vehicle liquid cooling plate structure according to claim 1 or 3, characterized in that: The first cooling medium flow channel (1-3) and the second cooling medium flow channel (3-1) are both rectangular cross-section channels.

5. The modular liquid cooling panel structure for electric vehicles of claim 2, wherein: The first cooling medium flow channel (1-3) has a double-channel structure.

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