Immersed cooling battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to an immersed cooling battery pack which comprises a sealing bin, batteries and a temperature acquisition unit, a cooling medium is contained in the sealing bin, and the bottom wall of the sealing bin is formed by a bottom supporting plate; the battery is arranged on the bottom supporting plate and is completely immersed in the cooling medium; the temperature acquisition unit is arranged on a first area on the surface of the battery, the first area is not in contact with the cooling medium, and the temperature acquisition unit is suitable for acquiring temperature information of the battery; wherein the bottom supporting plate is provided with a first hollowed-out structure, the battery is provided with a first surface facing the bottom supporting plate, the first area is a part, corresponding to the first hollowed-out structure, of the first surface, and the first hollowed-out structure enables the first area to be exposed out of the sealing bin; and a sealant layer is arranged between the bottom supporting plate and other areas, except the first area, of the first surface of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an immersion cooling battery pack. Background Art

[0002] In the existing design of immersion-cooled battery packs, the battery is surrounded by a cooling medium, and the temperature of the battery is mainly monitored in the following ways: first, the temperature of the battery is indirectly reflected by measuring the temperature of the cooling medium. This method is difficult to accurately reflect the temperature information of the battery itself; second, the temperature acquisition unit is set on the surface of the battery, but this will cause the temperature acquisition unit to be immersed in the cooling medium and affected by the change in the contact temperature difference of the cooling medium, resulting in large temperature fluctuations and poor temperature measurement accuracy collected by the temperature acquisition unit, and easily increasing the risk of failure of the temperature acquisition unit. In addition, the reliability requirements for the temperature acquisition unit are high, for example, a waterproof temperature acquisition unit needs to be selected, which increases the device cost. Utility Model Content

[0003] A main purpose of the present utility model is to overcome at least one defect of the above-mentioned prior art and provide an immersion cooling battery pack that can directly collect the temperature information of the battery itself and avoid the temperature collection unit being immersed in the cooling medium.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] According to one aspect of the utility model, an immersion-cooled battery pack is provided, which includes a sealed chamber, a battery and a temperature collection unit; the sealed chamber contains a cooling medium, and the bottom wall of the sealed chamber is formed by a bottom support plate; the battery is arranged on the bottom support plate, and the battery is completely immersed in the cooling medium; the temperature collection unit is arranged on a first area on the surface of the battery, the first area is not in contact with the cooling medium, and the temperature collection unit is suitable for collecting temperature information of the battery; wherein the bottom support plate is provided with a first hollow structure, the battery has a first surface facing the bottom support plate, the first area is a portion of the first surface corresponding to the first hollow structure, the first hollow structure makes the first area exposed outside the sealed chamber, and a sealant layer is provided between the bottom support plate and other areas of the first surface of the battery except the first area.

[0006] It can be seen from the above technical solution that the advantages and positive effects of the immersion cooling battery pack proposed by the utility model are:

[0007] The immersion cooling battery pack proposed in the utility model includes a sealed chamber and a battery, wherein the sealed chamber contains a cooling medium, the bottom wall of the sealed chamber is formed by a bottom support plate, the battery is arranged on the bottom support plate, and is completely immersed in the cooling medium. On this basis, the utility model arranges the temperature acquisition unit on the first area of ​​the battery surface, and the first area is not in contact with the cooling medium. Among them, the bottom support plate is provided with a first hollow structure, the battery has a first surface facing the bottom support plate, the first area is the part of the first surface corresponding to the first hollow structure, the first hollow structure makes the first area exposed outside the sealed chamber, and a sealant layer is arranged between the bottom support plate and the other areas of the first surface of the battery except the first area. Through the above structural design, the utility model arranges the temperature acquisition unit on the surface of the battery, thereby realizing the direct acquisition of the battery's own temperature information, thereby accurately reflecting the battery's own temperature information. The utility model designs the first area as an area on the battery surface that is not in contact with the cooling medium, thereby preventing the temperature acquisition unit from being soaked in the cooling medium, and preventing the temperature acquisition unit from being affected by the change in the contact temperature difference of the cooling medium, so that the temperature collected by the temperature acquisition unit fluctuates less, the temperature measurement accuracy is better, and it is not easy to fail. In addition, since the temperature acquisition unit is not immersed in the cooling medium, the battery pack does not need to use special devices such as waterproof devices, which is conducive to reducing device costs. On this basis, since the first surface of the battery is glued and fixed to the bottom support plate and is not immersed in the cooling medium, the temperature acquisition unit set on the first surface is exposed by using the first hollow structure of the bottom support plate, so that the temperature acquisition unit can be led out. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0009] Figure 1 is a schematic diagram of a three-dimensional structure of an immersion cooling battery pack according to an exemplary embodiment;

[0010] Figure 2 and Figure 3 They are Figure 1 The three-dimensional exploded schematic diagram of the different structures of the immersion cooling battery pack at two different viewing angles is shown;

[0011] Figure 4 and Figure 5 They are Figure 1 The three-dimensional structure schematic diagram of the bottom support plate at two different viewing angles is shown;

[0012] Figure 6is a schematic diagram of a three-dimensional structure of a bottom support plate of an immersion cooling battery pack according to another exemplary embodiment;

[0013] Figure 7 is a schematic diagram of a three-dimensional structure of an immersion cooling battery pack according to another exemplary embodiment;

[0014] Figure 8 yes Figure 7 A schematic diagram of the three-dimensional structure of the bottom support plate at another viewing angle is shown;

[0015] Fig. 9 and Fig.10 They are schematic diagrams of the three-dimensional structure of the bottom support plate of the immersion cooling battery pack according to other two exemplary embodiments.

[0016] The following are the descriptions of the reference numerals:

[0017] 100. Sealed warehouse;

[0018] 110. Bottom support plate;

[0019] 111. The first hollow structure;

[0020] 112. The first limit block;

[0021] 113. Groove;

[0022] 1131. Trough bottom;

[0023] 115.Through slot;

[0024] 116. The second limit block;

[0025] 120. Side panels;

[0026] 200.Battery;

[0027] 201. Battery column;

[0028] 210. First surface;

[0029] 220. Pressure relief structure;

[0030] 300. Collection items;

[0031] X. First direction;

[0032] Y. Second direction. DETAILED DESCRIPTION

[0033] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present invention.

[0034] In the following description of different exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part of the utility model and in which different exemplary structures, systems and steps that can implement multiple aspects of the utility model are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the utility model. Moreover, although the terms "above", "between", "within", etc. can be used in this specification to describe different exemplary features and elements of the utility model, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the utility model.

[0035] See also Figure 1 , which representatively shows a schematic diagram of the three-dimensional structure of the immersion cooling battery pack proposed in the utility model, in which the three-dimensional structure under the upward perspective is specifically shown. In this exemplary embodiment, the immersion cooling battery pack proposed in the utility model is illustrated by taking the vehicle battery as an example. It is easy for those skilled in the art to understand that in order to apply the relevant design of the utility model to other types of battery devices, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments described below, and these changes are still within the scope of the principle of the immersion cooling battery pack proposed in the utility model.

[0036] like Figure 1 As shown, in one embodiment of the present invention, the immersion cooling battery pack provided by the present invention includes a sealed compartment 100, a battery 200 and a temperature collection unit. Figures 2 to 5 , Figure 2 and Figure 3 3D exploded schematic diagrams of different structures of the immersion cooling battery pack at two different viewing angles are representatively shown in FIG. Figure 4 and Figure 5 1 and 2 respectively show three-dimensional structural schematic diagrams of the bottom support plate 110 at two different viewing angles. The following will be combined with the above drawings to describe in detail the structure, connection method and functional relationship of the main components of the immersion cooling battery pack proposed by the present invention.

[0037] like Figures 1 to 5As shown, in one embodiment of the present invention, the sealed chamber 100 contains a cooling medium. The battery 200 is arranged in the sealed chamber 100, and the battery 200 is completely immersed in the cooling medium. The so-called "complete immersion" means that all surfaces of the battery 200 except the first surface 210 facing the bottom support plate 110 are covered by the cooling medium. The temperature acquisition unit is arranged on the first area of ​​the surface of the battery 200, and the first area is not in contact with the cooling medium. The temperature acquisition unit is suitable for collecting the temperature information of the battery 200. Through the above structural design, the present invention arranges the temperature acquisition unit on the surface of the battery 200, thereby realizing the direct collection of the temperature information of the battery 200 itself, so as to accurately reflect the temperature information of the battery 200 itself. On this basis, the present invention designs the first area as an area where the surface of the battery 200 is not in contact with the cooling medium, thereby preventing the temperature acquisition unit from being immersed in the cooling medium, and preventing the temperature acquisition unit from being affected by the change in the contact temperature difference of the cooling medium, so that the temperature collected by the temperature acquisition unit fluctuates less, the temperature measurement accuracy is better, and it is not easy to fail. In addition, since the temperature acquisition unit is not immersed in the cooling medium, the battery pack does not need to use special devices such as waterproof devices, which is conducive to reducing device costs.

[0038] like Figures 1 to 5 As shown, in one embodiment of the present invention, the immersion cooling battery pack proposed by the present invention further includes a bottom support plate 110 and a side plate 120, both of which participate in forming a sealed chamber 100, and the bottom support plate 110 and the side plate 120 respectively form the bottom wall and the side wall of the sealed chamber 100, and the battery 200 is arranged on the bottom support plate 110, that is, the bottom support plate 110 is used to support the battery 200. On this basis, the bottom support plate 110 can be provided with a first hollow structure 111, and the so-called "hollow" refers to penetrating the bottom support plate 110 in the thickness direction (that is, the relative arrangement direction of the battery 200 and the bottom support plate 110 shown in the figure). The battery 200 has a first surface 210 facing the bottom support plate 110, and the first area is the portion of the first surface 210 corresponding to the first hollow structure 111. The first hollow structure 111 makes the first area exposed outside the sealed chamber 100, and a sealant layer is provided between the bottom support plate 110 and other areas of the first surface 210 of the battery 200 except the first area. Through the above structural design, since the first surface 210 of the battery 200 is glued and fixed to the bottom support plate 110 and is not soaked in the cooling medium, on this basis, the temperature collection unit provided on the exposed first surface 210 is exposed by utilizing the first hollow structure 111 of the bottom support plate 110, so that the temperature collection unit can be led out.

[0039] Based on the structural design that the bottom support plate 110 is provided with the first hollow structure 111, in one embodiment of the present utility model, a plane parallel to the first surface 210 of the battery 200 is used as a reference plane. On this reference plane, the area of ​​the orthographic projection figure of the first hollow structure 111 in the area of ​​the orthographic projection figure of the first surface 210 can account for 3% to 8.5%, such as 3%, 5%, 7%, 8.5%, etc. Through the above structural design, the present utility model can avoid the first hollow structure 111 being too large and reducing the contact area between the cooling medium and other areas of the first surface 210, thereby ensuring the heat exchange between the battery 200 and the cooling medium, and also ensuring the structural strength of the bottom support plate 110. At the same time, the present utility model can avoid the first hollow structure 111 being too small and not conducive to the installation of the temperature acquisition unit. In some embodiments, the above area ratio can also be less than 3%, or can be greater than 8.5%, such as 2.9%, 8.6%, etc., and is not limited to this embodiment.

[0040] like Figures 1 to 5 As shown, based on the structural design that the bottom support plate 110 is provided with a first hollow structure 111, in one embodiment of the present utility model, the bottom support plate 110 is provided with at least two first hollow structures 111. On this basis, on the above-mentioned reference plane, the sum of the areas of the orthographic projection figures of all the first hollow structures 111 in the total area of ​​the orthographic projection figure of the bottom support plate 110 can account for 0.5% to 2%, such as 0.5%, 1%, 1.5%, 2%, etc., and the so-called "total area" refers to the area of ​​the figure enclosed by the outline of the orthographic projection figure of the bottom support plate 110. Through the above-mentioned structural design, the utility model can avoid the first hollow structure 111 occupying too large an area on the bottom support plate 110 to affect the structural strength of the bottom support plate 110, and can also avoid the first hollow structure 111 occupying too small an area on the bottom support plate 110 to be unfavorable for the installation of the temperature acquisition unit. In some embodiments, the above-mentioned area ratio may be less than 0.5%, or may be greater than 2%, such as 0.49%, 2.01%, etc., and is not limited to this embodiment.

[0041] Based on the structural design that the bottom support plate 110 is provided with the first hollow structure 111, in one embodiment of the utility model, each first hollow structure 111 can be arranged corresponding to only one battery 200. In other words, the temperature collection unit exposed by one first hollow structure 111 is only used to collect the temperature information of one battery 200. Through the above structural design, the utility model can avoid the temperature collection units that collect the temperature information of different batteries 200 corresponding to the same first hollow structure 111 and cause mutual interference.

[0042] Based on the structural design that each first hollow structure 111 is arranged corresponding to only one battery 200, in one embodiment of the present utility model, the bottom support plate 110 can be provided with the same number of first hollow structures 111 as the number of batteries 200, and the first hollow structures 111 are arranged one-to-one with the batteries 200. Through the above structural design, the present utility model can use the first hollow structures 111 to expose the temperature collection unit of each battery 200 in a one-to-one correspondence.

[0043] like Figure 4 and Figure 5 As shown, in one embodiment of the present invention, the first hollow structure 111 may be a through hole. In some embodiments, the first hollow structure 111 may also be other structures, such as an opening, etc., which may be flexibly selected according to the shape and configuration requirements of the temperature acquisition unit.

[0044] In one embodiment of the present invention, the temperature acquisition unit may be a temperature measuring probe.

[0045] like Figures 1 to 4 As shown, in one embodiment of the present invention, a groove 113 may be provided on the side surface of the bottom support plate 110 facing away from the battery 200, and the groove 113 is arranged corresponding to the first hollow structure 111, that is, the first hollow structure 111 passes through the groove bottom 1131 of the groove 113 and the side surface of the bottom support plate 110 facing the battery 200. On this basis, the groove 113 is suitable for accommodating the acquisition member 300 (for example, but not limited to the low-voltage wiring harness plate), and the temperature acquisition unit is connected to the acquisition member 300 via the first hollow structure 111, for example, the wiring harness or other connection structure connecting the temperature acquisition unit and the acquisition member 300 passes through the first hollow structure 111. Through the above structural design, the present invention uses the groove 113 corresponding to the position of the first hollow structure 111 to accommodate the acquisition member 300, which can facilitate the assembly of the acquisition member 300 and its connection with the temperature acquisition unit, and is also conducive to reducing the space occupied in the height direction.

[0046] like Figure 4 As shown, based on the structural design that the bottom support plate 110 is provided with a groove 113, in one embodiment of the present utility model, at least two batteries 200 are arranged along a first direction X parallel to the bottom support plate 110 to form a battery column 201. For the battery column 201, the bottom support plate 110 is provided with at least two first hollow structures 111, and the first hollow structures 111 are arranged one by one with the batteries 200. On this basis, the groove 113 can extend along the first direction X and be arranged corresponding to the battery column 201, and all the first hollow structures 111 corresponding to the same battery column 201 are connected to the groove bottom 1131 of the same groove 113. Through the above structural design, the present utility model can further facilitate the assembly of the collection member 300 and its connection with the temperature collection unit, which is conducive to simplifying the structural complexity.

[0047] See also Figure 6 , Figure 6 Detailed description is given of the three-dimensional structure of the bottom support plate 110 in another exemplary embodiment of an immersion-cooled battery pack that can embody the principles of the present invention, in which the three-dimensional structure of the bottom support plate 110 from a top view is specifically shown.

[0048] like Figure 6 As shown, in one embodiment of the present invention, a slot can be provided on one side of the bottom support plate 110 facing the battery 200, and at least a portion of the end of the battery 200 close to the bottom support plate 110 is inserted into the slot. Through the above structural design, the present invention can limit the battery 200 by using the slot, further improving the assembly stability and reliability of the battery 200 and the bottom support plate 110.

[0049] like Figure 6 As shown, based on the structural design of the bottom support plate 110 being provided with a card slot, in one embodiment of the utility model, for the above-mentioned battery column 201, the bottom support plate 110 may be provided with at least two first hollow structures 111, and the first hollow structures 111 are arranged one by one with the battery 200. On this basis, a plurality of first limit blocks 112 may be provided on the side surface of the bottom support plate 110 facing the battery 200, and the plurality of first limit blocks 112 are arranged along the first direction X, and the first limit blocks 112 and the first hollow structures 111 are alternately arranged in the first direction X, and the above-mentioned card slot is formed between two adjacent first limit blocks 112.

[0050] See also Figure 7 and Figure 8 , Figure 7 , which is a representative schematic diagram of a three-dimensional structure of an immersion cooling battery pack in another exemplary embodiment that can embody the principle of the present invention, specifically shows the three-dimensional structure of the battery pack in a bottom-up perspective; Figure 8 Representatively shown in Figure 7 A schematic diagram of the three-dimensional structure of the bottom support plate 110 is shown, which specifically shows the three-dimensional structure of the bottom support plate 110 from a top view.

[0051] like Figure 7 As shown, in one embodiment of the present invention, the battery 200 further includes a pressure relief structure 220 (such as but not limited to a pressure relief valve), and the pressure relief structure 220 is disposed in the second area of ​​the first surface 210, so the first surface 210 is the pressure relief surface of the battery 200. Through the above structural design, the present invention arranges the pressure relief structure 220 of the battery 200 and the temperature collection unit on the same side surface of the battery 200, thereby enabling the temperature collection unit to collect temperature information of the pressure relief surface of the battery 200.

[0052] like Figure 7 and Figure 8 As shown, based on the structural design that the pressure relief structure 220 is arranged in the second area of ​​the first surface 210, in one embodiment of the present utility model, the bottom support plate 110 can be provided with a second hollow structure, the second hollow structure corresponds to the position of the second area, and the second hollow structure makes the second area exposed outside the sealed chamber 100, and a sealant layer is arranged between the bottom support plate 110 and the other areas of the first surface 210 of the battery 200 except the first area and the second area. Through the above structural design, the present utility model can use the second hollow structure to avoid the pressure relief structure 220, avoid obstruction when the pressure relief structure 220 releases pressure, which is conducive to improving the safety of the battery pack.

[0053] like Figure 7 and Figure 8 As shown, based on the structural design that the bottom support plate 110 is provided with a second hollow structure, in one embodiment of the present utility model, for the above-mentioned battery column 201, each second hollow structure corresponding to each battery 200 can be connected to each other as an integral through groove 115, and the through groove 115 passes through the bottom support plate 110 along the thickness direction, and the through groove 115 extends along the first direction X (but does not pass through the bottom support plate 110 along the first direction X). Through the above-mentioned structural design, the utility model can use an integral through groove 115 to serve as the second hollow structure corresponding to the pressure relief structure 220 of each battery 200, which is conducive to reducing the complexity of the structure and simplifying the difficulty of assembly and processing. In some embodiments, the second hollow structure can also be a hole or groove corresponding to the pressure relief structure 220 (second area) of multiple batteries 200, which is not limited to this embodiment.

[0054] See also Fig. 9 , Fig. 9 Detailed description is given of the three-dimensional structure of the bottom support plate 110 in another exemplary embodiment of an immersion-cooled battery pack that can embody the principles of the present invention, in which the three-dimensional structure of the bottom support plate 110 from a top view is specifically shown.

[0055] like Fig. 9As shown, in one embodiment of the present invention, still taking the structural design that the bottom support plate 110 is provided with a through slot 115 as an example, a plurality of second limit blocks 116 may be provided on the side surface of the bottom support plate 110 facing the battery 200, and the plurality of second limit blocks 116 are arranged at intervals along the first direction X, and a slot is formed between two adjacent second limit blocks 116, and the end portion of the battery 200 close to the bottom support plate 110 is clamped in the slot. On this basis, the second limit block 116 crosses the through slot 115 along the second direction Y, and the two ends of the second limit block 116 in the second direction Y are respectively connected to the edge areas on both sides of the through slot 115 in the second direction Y, and the second direction Y is parallel to the bottom support plate 110 and perpendicular to the first direction X. Through the above structural design, the present invention can limit the battery 200 by using the slot, and further improve the assembly stability and reliability of the battery 200 and the bottom support plate 110. At the same time, by connecting the two side areas of the through slot 115 with the second limiting block 116 , the structural strength of the area of ​​the bottom supporting plate 110 where the through slot 115 is provided can be reinforced.

[0056] See also Fig.10 , Fig.10 Detailed description is given of the three-dimensional structure of the bottom support plate 110 in another exemplary embodiment of an immersion-cooled battery pack that can embody the principles of the present invention, in which the three-dimensional structure of the bottom support plate 110 from a top view is specifically shown.

[0057] like Fig.10 As shown, in one embodiment of the present invention, the first limit block 112 and the second limit block 116 can be provided on one side of the bottom support plate 110 facing the battery 200. On this basis, a slot is formed between adjacent first limit blocks 112 and adjacent second limit blocks 116, and the slot formed by the first limit block 112 corresponds to the position of the slot formed by the second limit block 116 in the second direction Y, thereby enabling the two slots to limit the battery 200 at the same time, further improving the assembly stability and reliability of the battery 200 and the bottom support plate 110.

[0058] It should be noted that the immersion-cooled battery packs shown in the drawings and described in this specification are only a few examples of many types of battery packs that can adopt the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the immersion-cooled battery packs shown in the drawings or described in this specification.

[0059] In summary, the immersion cooling battery pack proposed in the present invention includes a sealed chamber 100 and a battery 200. The sealed chamber 100 contains a cooling medium. The bottom wall of the sealed chamber 100 is formed by a bottom support plate 110. The battery 200 is arranged on the bottom support plate 110 and is completely immersed in the cooling medium. On this basis, the present invention arranges the temperature acquisition unit on the first area on the surface of the battery 200, and the first area is not in contact with the cooling medium. Among them, the bottom support plate 110 is provided with a first hollow structure 111, and the battery 200 has a first surface 210 facing the bottom support plate 110. The first area is the part of the first surface 210 corresponding to the first hollow structure 111. The first hollow structure 111 makes the first area exposed outside the sealed chamber 100. A sealant layer is arranged between the bottom support plate 110 and other areas of the first surface 210 of the battery 200 except the first area. Through the above structural design, the utility model sets the temperature acquisition unit on the surface of the battery 200, thereby realizing direct acquisition of the temperature information of the battery 200 itself, thereby accurately reflecting the temperature information of the battery 200 itself. The utility model designs the first area as an area where the surface of the battery 200 is not in contact with the cooling medium, thereby preventing the temperature acquisition unit from being soaked in the cooling medium, and preventing the temperature acquisition unit from being affected by the change in the contact temperature difference of the cooling medium, so that the temperature collected by the temperature acquisition unit has a smaller fluctuation, better temperature measurement accuracy and is not easy to fail. In addition, since the temperature acquisition unit is not immersed in the cooling medium, the battery pack does not need to use special devices such as waterproof type, which is conducive to reducing the cost of devices. On this basis, since the first surface 210 of the battery 200 is glued and fixed to the bottom support plate 110 and is not immersed in the cooling medium, on this basis, the first hollow structure 111 of the bottom support plate 110 is used to expose the temperature acquisition unit set on the first surface 210, so that the temperature acquisition unit can be led out.

[0060] The exemplary embodiments of the immersion cooling battery pack proposed by the utility model are described and / or illustrated in detail above. However, the embodiments of the utility model are not limited to the specific embodiments described here. On the contrary, the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described here. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated here, the terms "one", "one" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to indicate the meaning of open inclusion and mean that there may be other elements / components / etc. in addition to the listed elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical restrictions on their objects.

[0061] Although the immersion cooled battery pack proposed by the present invention has been described according to different specific embodiments, those skilled in the art will recognize that the implementation of the present invention can be modified within the spirit and scope of the claims.

Claims

1. An immersion cooling battery pack, characterized in that: include: A sealed chamber containing a cooling medium, wherein the bottom wall of the sealed chamber is formed by a bottom support plate; A battery is disposed on the bottom support plate, and the battery is completely immersed in the cooling medium; as well as A temperature collection unit is disposed on a first area on the surface of the battery, the first area is not in contact with the cooling medium, and the temperature collection unit is suitable for collecting temperature information of the battery; Among them, the bottom support plate is provided with a first hollow structure, the battery has a first surface facing the bottom support plate, the first area is the part of the first surface corresponding to the first hollow structure, the first hollow structure makes the first area exposed outside the sealed chamber, and a sealant layer is provided between the bottom support plate and other areas of the first surface of the battery except the first area.

2. The immersion cooling battery pack according to claim 1, characterized in that: Taking a plane parallel to the first surface as a reference plane, on the reference plane, the area of ​​the orthographic projection figure of the first hollow structure accounts for 3% to 8.5% of the area of ​​the orthographic projection figure of the first surface of the battery.

3. The immersion cooling battery pack according to claim 1, characterized in that: The bottom support plate is provided with at least two first hollow structures; wherein, taking a plane parallel to the first surface as a reference plane, on the reference plane, the sum of the areas of the orthographic projection figures of all the first hollow structures accounts for 0.5% to 2% of the total area of ​​the orthographic projection figure of the bottom support plate.

4. The immersion cooling battery pack according to claim 1, characterized in that: Each of the first hollow structures corresponds to one of the battery arrangements.

5. The immersion cooling battery pack according to claim 4, characterized in that: The bottom support plate is provided with the same number of the first hollow structures as the number of the batteries, and the first hollow structures are arranged in a one-to-one correspondence with the batteries.

6. The immersion cooling battery pack according to any one of claims 1 to 5, characterized in that: A slot is provided on one side surface of the bottom support plate facing the battery, and an end of the battery close to the bottom support plate is at least partially inserted into the slot.

7. The immersion cooling battery pack according to claim 6, characterized in that: At least two of the batteries are arranged along a first direction parallel to the bottom support plate to form a battery column, and for the battery column, the bottom support plate is provided with at least two first hollow structures, and the first hollow structures are arranged one by one with the batteries; wherein, a plurality of first limit blocks are provided on a surface of the bottom support plate facing the batteries, and the plurality of first limit blocks are arranged along the first direction, and the first limit blocks and the first hollow structures are alternately arranged in the first direction, and the slot is formed between two adjacent first limit blocks.

8. The immersion cooling battery pack according to any one of claims 1 to 5, characterized in that: A groove is provided on a surface of the bottom support plate on one side facing away from the battery, and the groove is arranged corresponding to the first hollow structure, and the first hollow structure passes through the bottom of the groove and a surface of the bottom support plate on one side facing the battery; wherein the groove is suitable for accommodating a collection piece, and the temperature collection unit is connected to the collection piece via the first hollow structure.

9. The immersion cooling battery pack according to claim 8, characterized in that: At least two of the batteries are arranged along a first direction parallel to the bottom support plate to form a battery column. For the battery column, the bottom support plate is provided with at least two first hollow structures, and the first hollow structures are arranged one-to-one with the batteries; wherein the grooves extend along the first direction and are arranged corresponding to the battery column, and all the first hollow structures corresponding to the same battery column are connected to the bottom of the same groove.

10. The immersion cooling battery pack according to any one of claims 1 to 5, characterized in that: The battery further includes a pressure relief structure, and the pressure relief structure is disposed in the second area of ​​the first surface.

11. The immersion cooling battery pack according to claim 10, characterized in that: The bottom support plate is provided with a second hollow structure, which corresponds to the position of the second area. The second hollow structure makes the second area exposed outside the sealed chamber, and a sealant layer is provided between the bottom support plate and other areas of the first surface of the battery except the first area and the second area.

12. The immersion cooling battery pack according to claim 11, characterized in that: At least two of the batteries are arranged along a first direction parallel to the bottom support plate to form a battery column; wherein, for the battery column, the second hollow structures corresponding to the batteries are interconnected to form an integral through groove, and the through groove passes through the bottom support plate along the thickness direction and extends along the first direction.

13. The immersion cooling battery pack according to claim 12, characterized in that: A plurality of second limit blocks are arranged on a surface of one side of the bottom support plate facing the battery, and the plurality of second limit blocks are arranged at intervals along the first direction, and a slot is formed between two adjacent second limit blocks, and an end portion of the battery close to the bottom support plate is clamped in the slot; wherein, the second limit block spans the through slot along the second direction, and the two ends of the second limit block in the second direction are respectively connected to the edge areas on both sides of the through slot in the second direction, and the second direction is parallel to the bottom support plate and perpendicular to the first direction.

Images