A heat exchange structure for a high-voltage battery pack of an automobile

Abstract

The present invention discloses a heat exchange structure for a high-voltage battery pack case of an automobile, comprising a case and an upper cover, a fixing plate fixedly welded to one side of the upper cover, the fixing plate being located inside the case, a baffle fixedly welded to the inside of the case, a filter screen plugged and fixed on the baffle, the baffle being set as a concave baffle, and one side of the baffle being fixedly welded to the side wall of the case, the fixing plate being located inside the baffle, and a through hole being provided on the side wall of the case. The present invention provides a through hole on the side wall of the case, a threaded hole corresponding to the position of the through hole on the fixing plate, and a bolt is threadedly connected in the threaded hole, one end of the bolt is passed through the through hole and located outside the case, and the bolt is set as a hollow bolt, so as to avoid the formation of high pressure inside the case due to incomplete heat dissipation, assist ventilation and heat dissipation, and achieve better regulation of the temperature inside the battery pack case.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile high-voltage battery pack boxes, and in particular to an automobile high-voltage battery pack box heat exchange structure. Background Art

[0002] With the advancement of science and technology and the continuous improvement of human living standards, energy shortages and environmental pollution problems have become increasingly prominent. As far as the automotive industry is concerned, the replacement of traditional power with new energy power has become a major development trend. Compared with traditional power vehicles, electric vehicles have relatively more stringent requirements on the external ambient temperature during use. This is mainly concentrated in the battery pack. Too high or too low temperature will affect the performance of the battery pack. Once the thermal management performance is not handled properly, the vehicle will break down at the least, affecting the customer's user experience; in severe cases, the battery pack will catch fire and explode, directly affecting the safety of passengers' lives and property. Therefore, battery pack thermal management is a key and difficult topic in the field of electric vehicle research.

[0003] At present, most battery pack cases are designed to be sealed. The temperature of the battery pack body is controlled by adding a temperature regulating device inside. Although the sealed battery pack case design can effectively achieve dust and water proof functions, the sealed design will also cause insufficient heat dissipation inside the battery pack, which can easily lead to the formation of a high-pressure cavity inside the battery pack. Coupled with the bumps during use, it will seriously cause the battery pack to explode. Therefore, we propose a heat exchange structure for a high-voltage battery pack case of an automobile. Summary of the invention

[0004] The object of the present invention is to provide a heat exchange structure for a high-voltage battery pack case of an automobile. The present invention provides a through hole on the side wall of the case, a threaded hole corresponding to the position of the through hole on the fixing plate, and a bolt is threadedly connected in the threaded hole. One end of the bolt is passed through the through hole and is located outside the case. An air hole is provided inside the bolt. This can avoid high pressure inside the case due to incomplete heat dissipation, assist ventilation and heat dissipation, and achieve better regulation of the internal temperature of the battery pack case. A baffle is fixedly welded inside the case, a filter is plugged and fixed on the baffle, and a flame-retardant membrane core, a dust-proof membrane core and a waterproof and breathable membrane core are respectively provided in the filter. This can effectively ensure the dustproof and waterproof performance of the battery pack case, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A heat exchange structure for a high-voltage battery pack case of an automobile comprises a case and an upper cover, a fixing plate fixedly welded to one side of the upper cover, the fixing plate being located inside the case, a baffle fixedly welded to the inside of the case, a filter screen being plugged and fixed on the baffle, the baffle being arranged as a concave baffle, and one side of the baffle fixedly welded to the side wall of the case, the fixing plate being located on the inner side of the baffle, a through hole being provided on the side wall of the case, and a threaded hole corresponding to the position of the through hole being provided on the fixing plate, a bolt being threadedly connected to the inner thread of the threaded hole, one end of the bolt passing through the through hole being located outside the case, an air vent being provided inside the bolt, and a groove for placing a high-voltage battery being provided at the inner bottom end of the case.

[0007] Preferably, a slide groove is provided on the baffle, and a sliding block is fixedly connected to the side wall of the filter screen, and the sliding block is slidably connected in the slide groove.

[0008] Preferably, the filter includes an outer frame, a flame retardant membrane core, a dust-proof membrane core and a waterproof and breathable membrane core; the flame retardant membrane core is arranged on a side close to the groove, the dust-proof membrane core is arranged on a side close to the side wall of the box body, the waterproof and breathable membrane core is located between the flame retardant membrane core and the dust-proof membrane core, and the sliding block is fixedly connected to the side wall of the outer frame.

[0009] Preferably, wire holes are opened on the side wall of the upper cover, and two groups of wire holes are symmetrically arranged.

[0010] Preferably, a rubber sealing strip is fixedly bonded to one side of the upper cover, the rubber sealing strip is configured as a U-shaped rubber sealing strip, and one end of the rubber sealing strip is attached to the upper end of the box body.

[0011] Preferably, a rubber block for pressing and fixing the high-voltage battery is provided on one side of the upper cover.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention provides a through hole on the side wall of the box, a threaded hole corresponding to the position of the through hole on the fixing plate, and a bolt is threadedly connected in the threaded hole. One end of the bolt passes through the through hole and is located outside the box. An air hole is provided inside the bolt. This can avoid high pressure inside the box due to incomplete heat dissipation, assist ventilation and heat dissipation, and achieve better regulation of the temperature inside the battery pack box.

[0014] 2. The present invention can effectively ensure the dustproof and waterproof performance of the battery pack box by welding a baffle fixedly inside the box, inserting and fixing a filter on the baffle, and arranging a flame retardant membrane core, a dust-proof membrane core and a waterproof and breathable membrane core in the filter respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the baffle structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the upper cover structure of the present invention;

[0018] Figure 4 It is a schematic diagram of the bolt structure of the present invention;

[0019] Figure 5 It is a schematic diagram of the filter structure of the present invention.

[0020] In the figure: 1. box body; 2. upper cover; 3. fixing plate; 4. baffle; 5. filter screen; 6. sliding block; 7. through hole; 8. threaded hole; 9. bolt; 10. outer frame; 11. flame retardant membrane core; 12. dust-proof membrane core; 13. waterproof and breathable membrane core; 14. groove; 15. wire hole; 16. rubber sealing strip; 17. rubber block; 18. slide groove, 19 air hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-5 The present invention provides a technical solution: the heat exchange structure of the automobile high-voltage battery pack box includes a box 1 and an upper cover 2, a fixing plate 3 is fixedly welded on one side of the upper cover 2, the fixing plate 3 is located inside the box 1, a baffle 4 is fixedly welded inside the box 1, a filter 5 is plugged and fixed on the baffle 4, the baffle 4 is set as a concave baffle, and one side of the baffle 4 is fixedly welded on the side wall of the box 1, the fixing plate 3 is located on the inner side of the baffle 4, a through hole 7 is opened on the side wall of the box 1, and the fixing plate 3 is opened with a threaded hole 8 corresponding to the position of the through hole 7, a bolt 9 is threadedly connected to the threaded hole 8, one end of the bolt 9 passes through the through hole 7 and is located outside the box 1, an air vent 19 is opened inside the bolt 9, and a groove 14 for placing a high-voltage battery is opened at the bottom end of the inner part of the box 1.

[0023] Specifically, a slide groove 18 is provided on the baffle plate 4, and a sliding block 6 is fixedly connected to the side wall of the filter screen 5, and the sliding block 6 is slidably connected in the slide groove 18. It is convenient to slide the filter screen 5 onto the baffle plate 4 through the sliding block 6.

[0024] Specifically, the filter 5 includes an outer frame 10, a flame retardant film core 11, a dust-proof film core 12 and a waterproof and breathable film core 13. The flame retardant film core 11 is arranged on a side close to the groove 14, the dust-proof film core 12 is arranged on a side close to the side wall of the box body 1, the waterproof and breathable film core 13 is located between the flame retardant film core 11 and the dust-proof film core 12, and the sliding block 6 is fixedly connected to the side wall of the outer frame 10. It is convenient to effectively ensure the dustproof and waterproof performance of the battery pack box through the filter 5.

[0025] Specifically, the side wall of the upper cover 2 is provided with wire holes 15 , and two groups of wire holes 15 are symmetrically arranged.

[0026] Specifically, a rubber sealing strip 16 is fixedly bonded to one side of the upper cover 2, and the rubber sealing strip 16 is set as a square-shaped rubber sealing strip, and one end of the rubber sealing strip 16 is attached to the upper end of the box body 1. It is convenient to seal the upper cover 2 with the box body 1, and further prevent water and dust.

[0027] Specifically, a rubber block 17 for pressing and fixing the high-voltage battery is disposed on one side of the upper cover 2 .

[0028] Working principle: The present invention provides a through hole 7 on the side wall of the box body 1, a threaded hole 8 corresponding to the position of the through hole 7 on the fixing plate 3, and a bolt 9 is threadedly connected in the threaded hole 8, one end of the bolt 9 is passed through the through hole 7 and is located outside the box body 1, and an air hole 19 is provided inside the bolt 9, which can avoid the formation of high pressure inside the box body 1 due to incomplete heat dissipation, assist ventilation and heat dissipation, and achieve better regulation of the internal temperature of the battery pack box. A baffle 4 is fixedly welded inside the box body 1, and a filter 5 is inserted and fixed on the baffle 4, and a flame-retardant film core 11, a dust-proof film core 12 and a waterproof and breathable film core 13 are respectively arranged in the filter screen 5, which can effectively ensure the dustproof and waterproof performance of the battery pack box.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchange structure for a high-voltage battery pack of an automobile, comprising a box (1) and an upper cover (2), characterized in that: A fixing plate (3) is fixedly welded to one side of the upper cover (2), and the fixing plate (3) is located inside the box body (1). A baffle (4) is fixedly welded to the inside of the box body (1), and a filter screen (5) is plugged and fixed on the baffle (4). The baffle (4) is set as a concave baffle, and one side of the baffle (4) is fixedly welded to the side wall of the box body (1). The fixing plate (3) is located on the inner side of the baffle (4). A through hole (7) is opened on the side wall of the box body (1), and a threaded hole (8) corresponding to the position of the through hole (7) is opened on the fixing plate (3). A bolt (9) is connected to the inner thread of the threaded hole (8). One end of the bolt (9) passes through the through hole (7) and is located outside the box body (1). A vent hole (19) is opened inside the bolt (9). A groove (14) for placing a high-voltage battery is opened at the bottom of the inner part of the box body (1); a slide groove (18) is opened on the baffle (4). A sliding block (6) is fixedly connected to the side wall of the filter (5), and the sliding block (6) is slidably connected in the slide groove (18); the filter (5) comprises an outer frame (10), a flame retardant membrane core (11), a dust-proof membrane core (12) and a waterproof and breathable membrane core (13); the flame retardant membrane core (11) is arranged on a side close to the groove (14), the dust-proof membrane core (12) is arranged on a side close to the side wall of the box body (1), and the waterproof and breathable membrane core (13) is arranged on a side close to the side wall of the box body (1). The sliding block (6) is fixedly connected to the side wall of the outer frame (10) between the flame-retardant membrane core (11) and the dust-proof membrane core (12); a wire hole (15) is opened on the side wall of the upper cover (2), and two groups of wire holes (15) are symmetrically arranged; a rubber sealing strip (16) is fixedly bonded to one side of the upper cover (2), and the rubber sealing strip (16) is arranged as a U-shaped rubber sealing strip, and one end of the rubber sealing strip (16) is attached to the upper end of the box body (1).

2. The heat exchange structure of a high-voltage battery pack for an automobile according to claim 1, characterized in that: A rubber block (17) for pressing and fixing the high-voltage battery is provided on one side of the upper cover (2).

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