Immersed battery pack structure

Abstract

The utility model relates to the technical field of batteries, in particular to an immersed battery pack structure which comprises a box body (1), a circulating structure and a bottom plate cooling structure are arranged on the box body (1); a battery cell group (5) and cooling liquid are respectively arranged in the box body (1); the battery cell group (5) is arranged in the cooling liquid; the circulation structure can circulate the cooling liquid in the box body, so that the side surface of the battery cell group is effectively cooled; the bottom plate cooling structure can enable cooling liquid to flow through the bottom of the battery cell group, so that effective heat dissipation of the bottom surface of the battery cell group is realized; therefore, the device can realize effective cooling of the side surface and the bottom surface of the battery cell group, and is comprehensive in heat dissipation and excellent in heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, specifically, the utility model relates to a kind of immersed battery pack structure. BACKGROUND

[0002] Battery pack refers to a whole by multiple batteries, generally used in new energy vehicles, unmanned aerial vehicle, mobile power etc. Device, power supply for it;Battery pack will produce a lot of heat in the process of charging and discharging application, these heat needs to be diffused in time, currently commonly used to immerse battery module in coolant for cooling;Existing battery pack structure cannot guarantee that coolant and battery pack are in full and effective contact, and battery pack stability is poor, and generally only the side of battery pack battery can be cooled, battery bottom surface cannot be effectively cooled, and the cooling surface or range of battery module is greatly limited, and the use effect is poor.

[0003] The applicant found that the Chinese patent document with publication number 213071264U disclosed a battery pressing strip, a battery pressing assembly thereof, a battery pack and a battery pack on April 27, 2021, a plurality of batteries are arranged into a battery square row, a battery pack is formed by a battery pressing assembly, and then a plurality of battery packs are arranged into a battery pack;The battery pressing assembly comprises two end structure plates and two battery pressing strips. The battery pressing strip is bent from a metal plate body, comprising a first strip, a second strip, an end bending plate and a fixed wing plate;The first strip and the second strip are perpendicular;The end bending plate is connected to the end of the first strip;The fixed wing plate is connected to the end bending plate;The battery pressing strip is pressed on the battery square row, so that the first strip, the second strip and the end bending plate are tightly attached to the side, the top and the end of the battery square row respectively;The fixed wing plate is connected to the end structure plate by bolts;The device cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, the existing battery pack structure needs to be optimized. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an immersed battery pack structure capable of effectively cooling the side and bottom surface of the battery.

[0006] In order to solve the above technical problems, the utility model adopts the technical scheme: an immersed battery pack structure, comprising a box body;The box body is provided with a circulating structure and a bottom plate cooling structure;The box body is respectively provided with an electric core group and a coolant;The electric core group is arranged in the coolant.

[0007] The circulating structure comprises an inlet pipe and an outlet pipe;The box body comprises a vertical side plate;One side of the vertical side plate is provided with a through groove;The inlet pipe and the outlet pipe are respectively connected to one side of the vertical side plate away from the through groove.

[0008] The vertical side plates include a first vertical side plate and a second vertical side plate; a side plate flow channel is arranged in each of the first vertical side plate and the second vertical side plate; and the side plate flow channel is in communication with the through groove.

[0009] The liquid inlet pipe is connected to the first vertical side plate and is in communication with the side plate flow channel; and the liquid outlet pipe is connected to the second vertical side plate and is in communication with the side plate flow channel.

[0010] The bottom plate cooling structure includes a bottom plate flow channel; the box includes a bottom plate; the bottom plate is arranged at the bottom of the vertical side plate; a liquid inlet and a liquid outlet are respectively arranged on the top surface of the bottom plate; the bottom plate flow channel is arranged in the bottom plate and is in communication with the liquid inlet and the liquid outlet.

[0011] The box includes horizontal side plates arranged at two ends of the vertical side plates; end plates are arranged on one side of the horizontal side plates; and the battery cell groups are arranged between adjacent end plates.

[0012] A baffle is arranged between the end plates and the horizontal side plates; and a notch is arranged on the end plate.

[0013] A side flow guide frame is arranged between the battery cell groups and the vertical side plates; an intermediate flow guide frame is arranged between adjacent battery cell groups; the side flow guide frame is arranged on one side of the through groove; and the intermediate flow guide frame is arranged on one side of the notch.

[0014] The intermediate flow guide frame and the side flow guide frame each include a flow guide frame bottom plate; the flow guide frame bottom plate is connected to the bottom plate and is provided with a spoiler; and the spoilers are staggered distributed on the top of the flow guide frame bottom plate.

[0015] A partition plate is arranged on the top of the battery cell groups; a box cover is arranged on the box; an explosion-proof valve is arranged on the box cover; and the explosion-proof valve is in communication with the inside of the box.

[0016] The battery cell groups include battery cells; electrodes are arranged on the top of the battery cells; mounting holes are arranged on the partition plate; and the top of the battery cells extends from the mounting holes.

[0017] The application has the following beneficial effects:

[0018] 1、The application is provided with a side plate flow channel in the vertical side plate of the box body, the cooling liquid flows into the side plate flow channel from the liquid inlet pipe, and then flows into the box body from the plurality of through grooves arranged on the inner side of the vertical side plate to cool the side surface of the battery cell group; the cooling liquid flows into the side plate flow channel from the through groove of the other vertical side plate, and then flows out from the liquid outlet pipe; the application is provided with a bottom plate flow channel in the bottom plate of the box body, the cooling liquid in the box body enters the bottom plate flow channel from the liquid inlet on the bottom plate, and can effectively cool the bottom of the battery cell group; the cooling liquid in the bottom plate flow channel is discharged into the box body from the liquid outlet on the bottom plate, and then flows out from the liquid outlet pipe; thus, the device can effectively cool the side surface and bottom surface of the battery cell group, and has excellent heat dissipation effect.

[0019] 2、The application can make the end plate abut against the battery cell group and realize stable installation of the battery cell group by arranging the blocking strip between the end plate and the horizontal side plate; the end plate can block and guide the cooling liquid in the box body.

[0020] 3、The application can effectively guide the cooling liquid by arranging the middle flow guide frame and the side flow guide frame, ensure that the cooling liquid fully contacts the battery cell group, and further ensure the cooling effect; meanwhile, the middle flow guide frame and the side flow guide frame can further limit the battery cell group after installation, and ensure the stability of the battery cell group. BRIEF DESCRIPTION OF DRAWINGS

[0021] The specific implementation manner of the application will be further described in detail below in combination with the drawings, in which:

[0022] Figure 1 It is a whole structure schematic view of the present immersed battery pack structure;

[0023] Figure 2 It is a structure schematic view of the present immersed battery pack structure after opening the box cover;

[0024] Figure 3 It is a structure schematic view of the present immersed battery pack structure after opening the partition plate; Figure 2

[0025] Figure 4 It is a partial structure schematic view of the box body of the present immersed battery pack structure;

[0026] Figure 5 It is a sectional view of the partial structure of the box body of the present immersed battery pack structure;

[0027] Figure 6 It is a structure schematic view of the middle flow guide frame of the present immersed battery pack structure.

[0028] The marks in the above drawings are as follows:

[0029] The marks in the drawings are as follows:

[0030] ​1, box, 101, bottom plate, 102, horizontal side plate, 103, vertical side plate, 104, liquid inlet, 105, first vertical side plate, 106, second vertical side plate, 107, through slot,

[0031] 2, box cover, 201, explosion-proof valve,

[0032] 3, liquid inlet pipe,

[0033] 4, liquid outlet pipe,

[0034] 5, battery group, 501, electrode, 502, end plate, 503, battery,

[0035] 6, partition, 601, mounting hole,

[0036] 7, intermediate flow guide frame, 701, flow guide frame bottom plate, 702, spoiler,

[0037] 8, side flow guide frame,

[0038] 9, baffle,

[0039] 10, notch,

[0040] 11, side plate flow channel, 111, bottom plate flow channel. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, and the purpose is to help the technical personnel in the field to have a more complete, accurate and in-depth understanding of the inventive concept and technical scheme of the present application, and to help them to implement.

[0042] Figure 1 The immersion type battery pack structure shown, comprising a box 1;Box 1 is provided with circulation structure and bottom cooling structure;Box 1 is respectively provided with battery group 5 and cooling liquid;Battery group 5 is arranged in the cooling liquid.

[0043] The circulation structure can circulate the cooling liquid inside the box 1, effectively cooling the side of the battery group 5;The bottom cooling structure can make the cooling liquid flow through the bottom of the battery group 5, so as to effectively cool the bottom surface of the battery group 5;Therefore, the device can effectively cool the side and bottom of the battery group 5, and the cooling is comprehensive and the cooling effect is excellent.

[0044] The circulation structure comprises a liquid inlet pipe 3 and a liquid outlet pipe 4;Box 1 comprises a vertical side plate 103;One side of the vertical side plate 103 is provided with a through slot 107;The liquid inlet pipe 3 and the liquid outlet pipe 4 are respectively connected to the side of the vertical side plate 103 away from the through slot 107.

[0045] The box 1 comprises two vertical side plates 103 arranged oppositely; the liquid inlet pipe 3 and the liquid outlet pipe 4 are connected to the outer side of the vertical side plate 103, and a plurality of through grooves 107 are arranged on the inner side of the vertical side plate 103; the through groove 107 is a square groove; the cooling liquid flows into the through groove 107 from the liquid inlet pipe 3, and then flows into the inside of the box 1 from the plurality of through grooves 107 arranged on the inner side of the vertical side plate 103 to cool the side surface of the battery cell group 5; the cooling liquid then flows into the liquid outlet pipe 4 from the through groove 107 of the other vertical side plate 103, and then flows out of the device from the liquid outlet pipe 4.

[0046] The vertical side plate 103 comprises a first vertical side plate 105 and a second vertical side plate 106; the first vertical side plate 105 and the second vertical side plate 106 are both provided with a side plate flow channel 11; the side plate flow channel 11 is in communication with the through groove 107;

[0047] The liquid inlet pipe 3 is connected to the first vertical side plate 105 and is in communication with the side plate flow channel 11; the liquid outlet pipe 4 is connected to the second vertical side plate 106 and is in communication with the side plate flow channel 11.

[0048] The side plate flow channel 11 is arranged in the inside of the first vertical side plate 105 and the second vertical side plate 106; the first vertical side plate 105 and the second vertical side plate 106 are both provided with the through groove 107 on the opposite side surface; the cooling liquid flows into the side plate flow channel 11 from the liquid inlet pipe 3, and then flows into the inside of the box 1 from the plurality of through grooves 107 arranged on the inner side of the first vertical side plate 105 to cool the side surface of the battery cell group 5; the cooling liquid then flows into the side plate flow channel 11 from the through groove 107 of the second vertical side plate 106, and finally flows out of the device from the liquid outlet pipe 4.

[0049] The bottom plate cooling structure comprises a bottom plate flow channel 111; the box 1 comprises a bottom plate 101; the bottom plate 101 is arranged at the bottom of the vertical side plate 103; the top surface of the bottom plate 101 is respectively provided with a liquid inlet 104 and a liquid outlet; the bottom plate flow channel 111 is arranged in the bottom plate 101 and is in communication with the liquid inlet 104 and the liquid outlet.

[0050] The liquid inlet 104 and the liquid outlet are respectively arranged at two opposite corners of the bottom plate 101; the liquid inlet 104 is arranged close to the first vertical side plate 105; the liquid outlet is arranged close to the second vertical side plate 106; the cooling liquid in the box 1 enters the bottom plate flow channel 111 from the liquid inlet 104 on the bottom plate 101, which can effectively cool the bottom of the battery cell group 5; the cooling liquid in the bottom plate flow channel 111 is discharged into the box 1 from the liquid outlet on the bottom plate 101, and then flows out from the liquid outlet pipe 4.

[0051] The box 1 comprises a horizontal side plate 102, which is arranged at both ends of the vertical side plate 103; one side of the horizontal side plate 102 is provided with an end plate 502; the battery cell group 5 is arranged between adjacent end plates 502.

[0052] The end plate 502 is a square plate; both ends of the box body 1 are provided with the end plate 502; a plurality of groups of the battery cell group 5 are arranged between the two end plates 502; the end plate 502 is tightly abutted with the end of the battery cell group 5, so that the battery cell group 5 is stably installed in the box body 1.

[0053] The end plate 502 is provided with the groove 10.

[0054] The groove 10 is a square groove and is arranged at the middle of the bottom end of the end plate 502; the end plate 502 is tightly abutted with the end of the battery cell group 5 by arranging the blocking strip 9 between the end plate 502 and the horizontal side plate 102, so that the battery cell group 5 is stably installed; the end plate 502 can block and guide the cooling liquid in the box body 1; the cooling liquid in the box body 1 flows into the adjacent battery cell group 5 through the groove 10, so that the battery cell group 5 is fully cooled.

[0055] The battery cell group 5 is provided with the side flow guide frame 8 between the vertical side plate 103; the adjacent battery cell group 5 is provided with the middle flow guide frame 7; the side flow guide frame 8 is arranged at one side of the through groove 107; the middle flow guide frame 7 is arranged at one side of the groove 10.

[0056] The middle flow guide frame 7 and the side flow guide frame 8 can effectively guide the cooling liquid, so that the cooling liquid fully contacts with the battery cell group 5, and the cooling effect is further ensured; meanwhile, the middle flow guide frame 7 and the side flow guide frame 8 can further limit the battery cell group 5 after being installed, so that the stability of the battery cell group 5 is ensured.

[0057] The middle flow guide frame 7 and the side flow guide frame 8 both include the flow guide frame bottom plate 701; the flow guide frame bottom plate 701 is connected to the bottom plate 101 and is provided with the spoiler 702; the spoilers 702 are staggered distributed on the top of the flow guide frame bottom plate 701.

[0058] The spoiler 702 is a square plate; the adjacent spoilers 702 are staggered arranged along the position of the flow guide frame bottom plate 701; the flow rate of the cooling liquid is more uniform, and the cooling effect of the battery cell group 5 is effectively improved.

[0059] The top of the battery cell group 5 is provided with the partition plate 6; the box body 1 is provided with the box cover 2; the box cover 2 is provided with the explosion-proof valve 201; the explosion-proof valve 201 is communicated with the inside of the box body 1.

[0060] The partition plate 6 can isolate the cooling liquid in the box body 1, so that the cooling liquid is prevented from overflowing; the explosion-proof valve 201 is arranged at the center of the upper surface of the box cover 2; the battery cell group 5 has the risk of fire, and gas is discharged; the explosion-proof valve 201 is arranged, so that the gas is discharged when the gas pressure is large.

[0061] The battery cell group 5 includes the battery cell 503; the top of the battery cell 503 is provided with the electrode 501; the partition plate 6 is provided with the mounting hole 601; the top of the battery cell 503 is arranged to protrude from the mounting hole 601.

[0062] The connecting electrode 501 can realize the charging and discharging operation of the battery cell 503.

[0063] The specific working process of the utility model is as follows:

[0064] The cooling liquid flows into the side plate flow channel 11 from the liquid inlet pipe 3, and then flows into the inside of the box body 1 from the multiple through grooves 107 arranged on the inside of the first vertical side plate 105 to cool the side of the battery cell group 5; the cooling liquid flows into the side plate flow channel 11 from the through groove 107 of the second vertical side plate 106, and finally flows out of the device from the liquid outlet pipe 4.

[0065] The cooling liquid in the box body 1 enters the bottom plate flow channel 111 from the liquid inlet 104 on the bottom plate 101, and can effectively cool the bottom of the battery cell group 5; the cooling liquid in the bottom plate flow channel 111 is discharged into the box body 1 from the liquid outlet on the bottom plate 101, and then flows out from the liquid outlet pipe 4.

[0066] The utility model is described above in conjunction with the drawings. Obviously, the specific implementation of the utility model is not limited by the above method. As long as various non-essential improvements are made by using the method concept and technical scheme of the utility model; or the above concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.

Claims

1. An immersed battery pack structure, characterized by: The utility model provides a battery box, including box (1), the box (1) is equipped with circulation structure and bottom plate cooling structure, the box (1) is equipped with electric core group (5) and cooling liquid respectively, the electric core group (5) is equipped in the cooling liquid, The circulation structure includes liquid inlet pipe (3) and liquid outlet pipe (4), the box (1) includes vertical side plate (103), one side of vertical side plate (103) is equipped with through slot (107), liquid inlet pipe (3) and liquid outlet pipe (4) are connected in the side of vertical side plate (103) away from through slot (107) respectively, The vertical side plate (103) includes first vertical side plate (105) and second vertical side plate (106), and the first vertical side plate (105) and the second vertical side plate (106) are both equipped with side plate flow channel (11), and the side plate flow channel (11) is communicated with the through slot (107), The liquid inlet pipe (3) is connected on the first vertical side plate (105) and communicated with the side plate flow channel (11), and the liquid outlet pipe (4) is connected on the second vertical side plate (106) and communicated with the side plate flow channel (11), The bottom plate cooling structure includes bottom plate flow channel (111), the box (1) includes bottom plate (101), the bottom plate (101) is equipped in the bottom of vertical side plate (103), the top surface of bottom plate (101) is equipped with liquid inlet (104) and liquid outlet respectively, the bottom plate flow channel (111) is equipped in the bottom plate (101) and communicated with the liquid inlet (104) and the liquid outlet.

2. An immersed battery pack structure according to claim 1, characterized in that: The box (1) includes horizontal side plate (102), the horizontal side plate (102) is equipped in both ends of vertical side plate (103) respectively, one side of horizontal side plate (102) is equipped with end plate (502), and the electric core group (5) is equipped between adjacent end plate (502).

3. An immersed battery pack structure according to claim 2, characterized in that: The end plate (502) and the horizontal side plate (102) are equipped with blocking strip (9), and the end plate (502) is equipped with slot (10).

4. An immersed battery pack structure according to claim 3, characterized in that: The electric core group (5) and the vertical side plate (103) are equipped with side flow guide frame (8), adjacent electric core group (5) is equipped with intermediate flow guide frame (7), the side flow guide frame (8) is equipped on one side of through slot (107), and the intermediate flow guide frame (7) is equipped on one side of slot (10).

5. An immersed battery pack structure according to claim 4, wherein: The intermediate flow guide frame (7) and the side flow guide frame (8) both include flow guide frame bottom plate (701), the flow guide frame bottom plate (701) is connected on the bottom plate (101) and is equipped with spoiler (702), and the spoiler (702) is staggered distribution on the top of flow guide frame bottom plate (701).

6. An immersed battery pack structure according to any one of claims 2-5, characterized in that: The top of electric core group (5) is equipped with partition plate (6), the box (1) is equipped with box cover (2), the box cover (2) is equipped with explosion-proof valve (201), and the explosion-proof valve (201) is communicated with the inside of box (1).

7. An immersed battery pack structure according to claim 6, characterized in that: The electric core group (5) includes electric core (503), the top of electric core (503) is equipped with electrode (501), the partition plate (6) is equipped with mounting hole (601), and the top of electric core (503) is out of mounting hole (601).

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