Liquid cooling box

Abstract

A liquid cooling box provided by the utility model comprises a tray assembly, an upper box body and an electric appliance assembly, the tray assembly comprises a first liquid cooling plate, the upper box body comprises a circumferentially arranged side cover and a second liquid cooling plate arranged at the top of the side cover, and the bottom of the side cover is fixed with the first liquid cooling plate. The first liquid cooling plate, the side cover and the second liquid cooling plate jointly form a containing cavity for containing the battery assembly, and the first liquid cooling plate and the second liquid cooling plate are located below and above the battery assembly respectively. According to the utility model, the tray assembly, the upper box body and the electric appliance assembly form the liquid cooling box with good sealing performance, and the first liquid cooling plate and the second liquid cooling plate are respectively arranged at the bottom and the top of the liquid cooling box, so that double-sided cooling of the battery assembly is realized, the heat dissipation contact area is enlarged, and the heat dissipation effect of the battery assembly is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries and energy storage, in particular to a liquid cooling box. Background Art

[0002] The continuous development and progress of new energy vehicles has promoted the increase in demand for power battery temperature control, and the proportion of power battery systems equipped with cooling boxes has increased year by year.

[0003] At present, most cooling boxes on the market are complex and bulky, and most of them are single-sided cooling. The production process is complicated, the processing efficiency is low, and the manufacturing cost is high. At the same time, the single-sided liquid cooling heat dissipation efficiency is also low, which makes it difficult to meet the high-rate charging and discharging requirements. When the battery system has a high energy density, after thermal runaway occurs, a large amount of heat and even high-temperature flue gas will be generated in a short period of time. If the heat and high-temperature flue gas are not discharged from the battery pack in time, heat diffusion will occur, leading to serious safety accidents.

[0004] Therefore, it is necessary to improve the existing technology and provide a liquid cooling box to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid cooling box.

[0006] According to one aspect of the present invention, there is provided a liquid cooling box, comprising:

[0007] a tray assembly, the tray assembly comprising a first liquid cooling plate;

[0008] An upper box body, the upper box body comprising circumferentially arranged side covers and a second liquid cooling plate provided on top of the side covers;

[0009] The bottom of the side cover is fixed to the first liquid cooling plate. The first liquid cooling plate, the side cover and the second liquid cooling plate together constitute a accommodating cavity for accommodating the battery assembly. The first liquid cooling plate and the second liquid cooling plate are respectively located below and above the battery assembly.

[0010] Preferably, the upper box body also includes a top cover arranged on the top of the second liquid cooling plate, the second liquid cooling plate is fixed to the top of the side cover and fixed between the top cover and the side cover, the first liquid cooling plate includes a first flow channel plate provided with a cooling flow channel and a first substrate bonded to the first flow channel plate, the second liquid cooling plate includes a second flow channel plate provided with a cooling flow channel and a second substrate bonded to the second flow channel plate.

[0011] Preferably, the lower surface of the battery assembly contacts the first substrate, and the upper surface of the battery assembly contacts the second substrate.

[0012] Preferably, the middle part of the top cover is raised upward to form a raised portion for avoiding the cooling flow channel, and a plurality of mounting holes are correspondingly provided at the peripheral edge of the raised portion and the peripheral edge of the second liquid cooling plate, and the top cover and the second liquid cooling plate are locked to the top of the side cover by fasteners passing through the corresponding mounting holes.

[0013] Preferably, the bottom circumference of the side cover is provided with a flange extending outward, and a plurality of mounting holes are correspondingly provided at the flange and the peripheral edge of the first liquid cooling plate, and the side cover is fixed to the first liquid cooling plate by fasteners passing through the corresponding mounting holes.

[0014] Preferably, a second liquid inlet joint and a second liquid outlet joint are provided on the second flow channel plate.

[0015] Preferably, a first liquid inlet connector and a first liquid outlet connector are provided on the first flow channel plate.

[0016] Preferably, the top cover is provided with avoidance portions at the second liquid inlet joint and the second liquid outlet joint, respectively.

[0017] Preferably, heat conducting members are provided between the battery assembly and the first liquid cooling plate and the second liquid cooling plate.

[0018] Preferably, the heat conducting member is a heat conducting pad or a heat conducting structural adhesive.

[0019] Preferably, it further comprises an electrical component, the electrical component comprising an electrical device and a fixing plate, the electrical device being fixed to the side cover via the fixing plate.

[0020] Preferably, the tray assembly also includes a longitudinal beam assembly, a cross beam assembly and a reinforcement assembly arranged at the bottom of the first liquid cooling plate, the longitudinal beam assembly includes a first longitudinal beam and a second longitudinal beam arranged along the length direction of the first liquid cooling plate and located on both sides of the width direction of the first liquid cooling plate, the cross beam assembly includes a first cross beam and a second cross beam arranged along the width direction of the first liquid cooling plate and located on both sides of the length direction of the first liquid cooling plate, the reinforcement assembly includes a first reinforcement beam and a second reinforcement beam arranged along the width direction of the first liquid cooling plate and a reinforcement plate arranged along the length direction of the first liquid cooling plate.

[0021] Preferably, the first reinforcement beam and the second reinforcement beam are located between the first cross beam and the second cross beam, and the reinforcement plate is arranged in contact with the first flow channel plate and is located above the first reinforcement beam and the second reinforcement beam.

[0022] Compared with the prior art, the liquid cooling box provided by the present invention has the following beneficial effects:

[0023] Due to the adoption of the above-mentioned technical solution, the utility model has the advantages of simple structure, ingenious design and low cost. A liquid cooling box with good sealing performance is formed by the tray assembly, the upper box body and the electrical assembly. The first liquid cooling plate and the second liquid cooling plate are respectively arranged at the bottom and the top of the liquid cooling box to realize double-sided cooling of the battery assembly, expand the heat dissipation contact area, and enhance the heat dissipation effect of the battery assembly. The joints on the first liquid cooling plate and the second liquid cooling plate are both located on the outside of the box body, and there is no risk of leakage in the liquid cooling fluid cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a front perspective view of the liquid cooling box of the present invention;

[0026] Figure 2 This is a three-dimensional view of the back of the liquid cooling box of the present invention;

[0027] Figure 3 This is an exploded view of the liquid cooling box of the present invention;

[0028] Figure 4 This is a top view of the liquid cooling box of the present invention;

[0029] Figure 5 for Figure 4 The cross-sectional view of the AA surface;

[0030] Figure 6 for Figure 4 Cross-sectional view of the BB surface;

[0031] Figure 7 This is an exploded view of the tray assembly of the present invention.

[0032] Among them, 1. Tray assembly, 11. First liquid cooling plate, 111. First flow channel plate, 112. First base plate, 12. Module beam, 121. First module beam, 122. Second module beam, 13. Longitudinal beam assembly, 131. First longitudinal beam, 132. Second longitudinal beam, 14. Crossbeam assembly, 141. First crossbeam, 142. Second crossbeam, 15. Strengthening assembly, 151. First reinforcing beam, 152. Second reinforcing beam, 153. Reinforcement plate, 2. Upper box, 21. Side cover, 22. Top cover, 23. Second liquid cooling plate, 231. Second flow channel plate, 232. Second base plate, 3. Battery assembly, 4. Electrical assembly, 41. Electrical device, 42. Fixed plate, 51. First liquid inlet joint, 52. First liquid outlet joint, 61. Second liquid inlet joint, 62. Second liquid outlet joint, 7. Avoidance part. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0035] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0036] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0037] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0039] See also Figures 1 to 6The present invention discloses a liquid cooling box, comprising a tray assembly 1 and an upper box body 2. The tray assembly 1 comprises a first liquid cooling plate 11, a module beam 12 fixed above the first liquid cooling plate 11, and a longitudinal beam assembly 13, a transverse beam assembly 14, and a reinforcement assembly 15 provided at the bottom of the first liquid cooling plate 11. The upper box body 2 comprises a side cover 21 arranged circumferentially and fixed to the first liquid cooling plate 11, a top cover 22 located on top of the side cover 21, and a second liquid cooling plate 23 provided below the top cover 22. The second liquid cooling plate 23 is fixed to the top of the side cover 21, and the top cover 22 is fixed above the second liquid cooling plate 23.

[0040] The bottom of the side cover 21 is fixed to the first liquid cooling plate 11. The first liquid cooling plate 11, the side cover 21 and the second liquid cooling plate 23 together constitute a accommodating cavity for accommodating the battery assembly 3. The first liquid cooling plate 11 and the second liquid cooling plate 23 are respectively located below and above the battery assembly 3 to perform double-sided cooling on the battery assembly 3. The middle part of the top cover 22 is raised upward to form a raised portion (not marked in the figure) for avoiding the cooling flow channel. A plurality of mounting holes are correspondingly provided at the peripheral edge of the raised portion and the peripheral edge of the second liquid cooling plate 23. Fasteners are passed through the corresponding mounting holes to lock the top cover 22 and the second liquid cooling plate 23 to the top of the side cover 21, so that the top cover 22, the second liquid cooling plate 23 and the side cover 21 become a whole.

[0041] The bottom circumference of the side cover 21 is provided with a flange extending outward (not marked in the figure), and a plurality of mounting holes are correspondingly provided at the flange and the peripheral edge of the first liquid cooling plate 11. The side cover 21 is fixed to the first liquid cooling plate 11 by fasteners passing through the corresponding mounting holes.

[0042] The liquid cooling box of the present invention also includes an electrical assembly 4. This assembly consists of an electrical component 41 and a fixing plate 42. The electrical component 41 is secured to the side cover 21 via the fixing plate 42. The side cover 21 has an opening at one end, and the fixing plate 42 is bolted to the opening to seal it. A sealing gasket is provided between the fixing plate 42 and the side cover 21 to ensure a tight seal at the connection and prevent leakage.

[0043] The first liquid cooling plate 11 includes a first flow channel plate 111 provided with a cooling flow channel and a first substrate 112 attached to the first flow channel plate 111. The second liquid cooling plate 23 includes a second flow channel plate 231 provided with a cooling flow channel and a second substrate 232 attached to the second flow channel plate 231. The lower surface of the battery assembly 3 is attached to the first substrate 112, and the upper surface of the battery assembly 3 is attached to the second substrate 232. A heat conducting member (not marked in the figure) is provided between the battery assembly 3 and the first liquid cooling plate 11 and the second liquid cooling plate 23. The heat conducting member is a thermal pad or a thermally conductive structural adhesive. In other embodiments, other heat conducting members may also be used to enhance the heat transfer efficiency.

[0044] The first flow channel plate 111 is provided with a first liquid inlet connector 51 and a first liquid outlet connector 52; the second flow channel plate 231 is provided with a second liquid inlet connector 61 and a second liquid outlet connector 62. The first liquid inlet connector 51, the first liquid outlet connector 52, the second liquid inlet connector 61, and the second liquid outlet connector 62 are all located on the side of the electrical component 4 and extend horizontally. The connectors are placed on the side of the flow channel plate, saving space within the box and achieving dry and wet separation. The top cover 22 is provided with a relief portion 7 at the corresponding locations of the second liquid inlet connector 61 and the second liquid outlet connector 62, respectively, to allow the second liquid inlet connector 61 and the second liquid outlet connector 62 to pass through.

[0045] See also Figure 3 and Figure 7 The module beam 12 is disposed on the upper surface of the first substrate 112. The module beam 12 extends along the width direction of the first liquid cooling plate 11 and includes a first module beam 121 and a second module beam 122 respectively disposed on both sides of the first substrate 112 to facilitate the fixation of the battery cells in the battery assembly 3.

[0046] The longitudinal beam assembly 13 includes a first longitudinal beam 131 and a second longitudinal beam 132 extending along the length of the first liquid cooling plate 11 and located on either side of the width of the first liquid cooling plate 11. Through holes (not labeled in the figure) corresponding to the mounting holes on the flange and the peripheral edge of the first liquid cooling plate 11 are respectively defined in the first and second longitudinal beams 131, 132. Fasteners pass through the corresponding mounting holes and through holes to secure the side cover 21, the first liquid cooling plate 11, and the first and second longitudinal beams 131, 132 together.

[0047] The crossbeam assembly 14 includes a first crossbeam 141 and a second crossbeam 142 extending along the width of the first liquid cooling plate 11 and located on either side of the length of the first liquid cooling plate 11. The first crossbeam 141 is located on the side where the first liquid inlet connector 51 and the first liquid outlet connector 52 are located. The first crossbeam 141 is provided with avoidance portions 7 at locations corresponding to the first liquid inlet connector 51 and the first liquid outlet connector 52, respectively, to allow the first liquid inlet connector 51 and the first liquid outlet connector 52 to pass through.

[0048] The reinforcement assembly 15 includes a first reinforcement beam 151 extending along the width direction of the first liquid cooling plate 11, a second reinforcement beam 152, and a reinforcement plate 153 extending along the length direction of the first liquid cooling plate 11. The first reinforcement beam 151 and the second reinforcement beam 152 are located between the first crossbeam 141 and the second crossbeam 142. The reinforcement plate 153 is arranged in affixed relation to the first flow channel plate 111, with the two ends of the reinforcement plate 153 located above the first crossbeam 141 and the second crossbeam 142, respectively, and the middle of the reinforcement plate 153 located above the first reinforcement beam 151 and the second reinforcement beam 152. By providing the crossbeam assembly 14, the longitudinal beam assembly 13, and the reinforcement assembly 15, the strength and stability of the first liquid cooling plate 11 can be greatly enhanced, especially when the liquid cooling plate is large in size and structure, solving the problem of easy cracking and poor airtightness at the weld of the liquid cooling plate.

[0049] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A liquid cooling box, characterized in that: include: a tray assembly, the tray assembly comprising a first liquid cooling plate; An upper box body, the upper box body comprising circumferentially arranged side covers and a second liquid cooling plate provided on top of the side covers; The bottom of the side cover is fixed to the first liquid cooling plate. The first liquid cooling plate, the side cover and the second liquid cooling plate together constitute a accommodating cavity for accommodating the battery assembly. The first liquid cooling plate and the second liquid cooling plate are respectively located below and above the battery assembly.

2. The liquid cooling box according to claim 1, characterized in that: The upper box body also includes a top cover arranged on the top of the second liquid cooling plate, the second liquid cooling plate is fixed to the top of the side cover and fixed between the top cover and the side cover, the first liquid cooling plate includes a first flow channel plate provided with a cooling flow channel and a first substrate bonded to the first flow channel plate, and the second liquid cooling plate includes a second flow channel plate provided with a cooling flow channel and a second substrate bonded to the second flow channel plate.

3. The liquid cooling box according to claim 2, characterized in that: The lower surface of the battery assembly contacts the first substrate, and the upper surface of the battery assembly contacts the second substrate.

4. The liquid cooling box according to claim 3, characterized in that: The middle part of the top cover is raised upward to form a raised portion for avoiding the cooling channel. A plurality of mounting holes are correspondingly provided at the peripheral edge of the raised portion and the peripheral edge of the second liquid cooling plate. Fasteners are passed through the corresponding mounting holes to lock the top cover and the second liquid cooling plate to the top of the side cover.

5. The liquid cooling box according to claim 4, characterized in that: The bottom circumference of the side cover is provided with a flange extending outward, and the flange and the peripheral edge of the first liquid cooling plate are respectively provided with a plurality of mounting holes, and the side cover is fixed to the first liquid cooling plate by fasteners passing through the corresponding mounting holes.

6. The liquid cooling box according to claim 5, characterized in that: The second flow channel plate is provided with a second liquid inlet joint and a second liquid outlet joint.

7. The liquid cooling box according to claim 6, characterized in that: The first flow channel plate is provided with a first liquid inlet joint and a first liquid outlet joint.

8. The liquid cooling box according to claim 7, characterized in that: The top cover is provided with avoidance portions at the second liquid inlet joint and the second liquid outlet joint, respectively.

9. The liquid cooling box according to claim 8, characterized in that: Heat conducting members are provided between the battery assembly and the first and second liquid cooling plates.

10. The liquid cooling box according to claim 9, characterized in that: The heat conducting member is a heat conducting pad or a heat conducting structural adhesive.

11. The liquid cooling box according to claim 10, wherein: It also includes an electrical component, which includes an electrical device and a fixing plate, and the electrical device is fixed to the side cover through the fixing plate.

12. The liquid cooling box according to claim 2, wherein: The tray assembly also includes a longitudinal beam assembly, a cross beam assembly and a reinforcement assembly arranged at the bottom of the first liquid cooling plate. The longitudinal beam assembly includes a first longitudinal beam and a second longitudinal beam arranged along the length direction of the first liquid cooling plate and located on both sides of the width direction of the first liquid cooling plate. The cross beam assembly includes a first cross beam and a second cross beam arranged along the width direction of the first liquid cooling plate and located on both sides of the length direction of the first liquid cooling plate. The reinforcement assembly includes a first reinforcement beam and a second reinforcement beam arranged along the width direction of the first liquid cooling plate and a reinforcement plate arranged along the length direction of the first liquid cooling plate.

13. The liquid cooling box according to claim 12, wherein: The first reinforcement beam and the second reinforcement beam are located between the first cross beam and the second cross beam, and the reinforcement plate is arranged in contact with the first flow channel plate and is located above the first reinforcement beam and the second reinforcement beam.

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