Temperature adjusting assembly and battery pack

Abstract

The utility model provides a temperature adjusting assembly and a battery pack, and belongs to the technical field of battery packs, the temperature adjusting assembly comprises a plurality of adjusting plates, the plurality of adjusting plates are arranged at intervals, an accommodating groove for placing a battery cell is formed between every two adjacent adjusting plates, and the adjusting plates are suitable for being in contact with the surface of the battery cell; the adjusting plate is provided with a first flow channel and a second flow channel, the first flow channel and the second flow channel are not communicated with each other, and the flow directions of the first flow channel and the second flow channel are opposite. The first flow channel and the second flow channel which are not communicated are arranged in the adjusting plate, the liquid in the two flow channels flows oppositely, during cooling, the liquid in the two flow channels is fed from the two sides respectively, heat exchange is conducted at the same time, the heat exchange efficiency is improved, the flow directions are opposite, the temperature consistency is improved through convective heat exchange, the situation that the temperature difference between the two sides of the adjusting plate is too large, and the service life of the adjusting plate is prolonged is avoided. And the problem of non-uniform temperature of the battery pack caused by single flow direction of a large-surface cooling scheme in the battery pack is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a temperature regulating component and a battery pack. Background Art

[0002] With the technological development of the new energy industry, the design of battery packs has been continuously iterating, and the design scheme has been continuously iterating from the traditional small module scheme to the large module or module-free scheme. The current market requirements for fast charging of battery packs are getting higher and higher, and the problem that comes with it is the increase in heat generation.

[0003] At present, the heat of the battery cells in the battery pack is dissipated by liquid cooling, which is done by passing coolant into the flow channel. However, in the traditional method, the temperature drop of the battery cells close to the water inlet is higher, while the temperature drop of the battery cells close to the water outlet is lower, resulting in a large overall temperature difference. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the traditional liquid cooling method adopted in the prior art, in which the temperature drop of the battery cells near the water inlet is higher, while the temperature drop of the battery cells near the water outlet is lower, resulting in a large overall temperature difference, thereby providing a temperature regulation component and a battery pack.

[0005] In order to solve the above technical problems, the utility model provides a temperature adjustment component, including:

[0006] A plurality of adjustment plates, wherein the plurality of adjustment plates are arranged at intervals, and a receiving groove for placing the battery cell is formed between two adjacent adjustment plates, and the adjustment plates are suitable for contacting with the surface of the battery cell;

[0007] The regulating plate has a first flow channel and a second flow channel, the first flow channel and the second flow channel are not connected to each other, and the flow directions of the first flow channel and the second flow channel are opposite.

[0008] Optionally, the first flow channel and the second flow channel are separated by a partition.

[0009] Optionally, the adjustment plate and the partition are integrally formed.

[0010] Optionally, the cross-sectional sizes of the first flow channel and the second flow channel are set to be equal.

[0011] Optionally, the first flow channel and the second flow channel are distributed along a height direction of the adjustment plate or along a thickness direction of the adjustment plate.

[0012] Optionally, a plurality of fins are disposed in the first flow channel and the second flow channel.

[0013] Optionally, it also includes:

[0014] A first connecting plate connected to the first ends of the plurality of adjusting plates, the first connecting plate having a first liquid inlet channel and a first liquid outlet channel which are not connected to each other, the first liquid inlet channel is connected to the first channel, and the first liquid outlet channel is connected to the second channel;

[0015] The second connecting plate is connected to the second ends of the plurality of adjusting plates, and the second connecting plate has a second liquid inlet channel and a second liquid outlet channel which are not connected to each other, the second liquid outlet channel is connected to the first channel, and the second liquid inlet channel is connected to the second channel.

[0016] Optionally, the first liquid inlet flow channel and the first liquid outlet flow channel, as well as the second liquid inlet flow channel and the second liquid outlet flow channel are separated by an isolation plate;

[0017] The first connecting plate and the second connecting plate are provided with connecting grooves plugged into the adjusting plate, and the adjusting plate is provided with notches at positions opposite to the partitioning plate, and the notches are clamped on the partitioning plate.

[0018] Optionally, the first liquid inlet of the first liquid inlet channel, the first liquid outlet of the first liquid outlet channel, the second liquid inlet of the second liquid inlet channel and the second liquid outlet of the second liquid outlet channel are all located on the same side of the temperature adjustment component.

[0019] The utility model also provides a battery pack, comprising: a battery cell and any one of the temperature regulating components described above, wherein the temperature regulating component is suitable for regulating the temperature of the battery cell.

[0020] The technical solution of this utility model has the following advantages:

[0021] The temperature regulating component provided by the utility model comprises a plurality of regulating plates, wherein the plurality of regulating plates are arranged at intervals, and a receiving groove for placing a battery cell is formed between two adjacent regulating plates, and the regulating plates are suitable for contacting with the large surface of the battery cell; the regulating plates have a first flow channel and a second flow channel, the first flow channel and the second flow channel are not connected to each other, and the flow directions of the first flow channel and the second flow channel are opposite.

[0022] By setting a non-connected first flow channel and a second flow channel in the adjustment plate, and the liquids in the first flow channel and the second flow channel flow in opposite directions, during cooling, the liquids in the first flow channel and the second flow channel are respectively fed from both sides, and heat exchange is performed at the same time, thereby improving the heat exchange efficiency. Moreover, the flow directions are opposite, and convective heat exchange improves the temperature consistency, avoiding excessive temperature difference on both sides of the adjustment plate, that is, the coolant with a lower temperature can cool the coolant with a higher temperature, effectively alleviating the problem of uneven battery pack temperature caused by a single flow direction of a large-surface cooling scheme in the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of an implementation of the temperature adjustment component provided in Example 1 of the utility model;

[0025] Figure 2 for Figure 1 A schematic cross-sectional view of the structure;

[0026] Figure 3 for Figure 2 A partial enlarged schematic diagram of

[0027] Figure 4 for Figure 1 Another cross-sectional structural schematic diagram in;

[0028] Figure 5 for Figure 4 A partial enlarged schematic diagram of

[0029] Figure 6 for Figure 4 Another partial enlarged schematic diagram of;

[0030] Figure 7 for Figure 4 Schematic diagram of the split structure in ;

[0031] Figure 8 for Figure 1 A schematic diagram of the flow direction of a complete flow channel;

[0032] Fig. 9 for Figure 1 Another schematic diagram of the flow direction of a complete flow channel;

[0033] Fig.10 This is a schematic structural diagram of an implementation of a battery pack provided in Example 2 of the utility model.

[0034] Description of reference numerals:

[0035] 1. Regulating plate; 2. Battery cell; 3. Receiving groove; 4. First flow channel; 5. Second flow channel; 6. Partition plate; 7. First connecting plate; 8. First liquid inlet flow channel; 9. First liquid outlet flow channel; 10. Second connecting plate; 11. Second liquid inlet flow channel; 12. Second liquid outlet flow channel; 13. Notch; 14. Isolation plate. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] The temperature regulating component provided in this embodiment is used in a battery pack to perform balanced heat exchange on the battery pack. It can cool down the cells in the battery pack or increase the temperature. The following description will be based on cooling.

[0042] like Figures 1 to 3 As shown, a specific implementation of the temperature adjustment component provided in this embodiment includes a plurality of adjustment plates 1, wherein the plurality of adjustment plates 1 are arranged at intervals, and a receiving groove 3 for placing the battery cell 2 is formed between two adjacent adjustment plates 1, and the adjustment plate 1 is suitable for contacting the surface of the battery cell 2; the adjustment plate 1 has a first flow channel 4 and a second flow channel 5, the first flow channel 4 and the second flow channel 5 are not connected to each other, and the flow directions of the first flow channel 4 and the second flow channel 5 are opposite.

[0043] By setting the first flow channel 4 and the second flow channel 5 which are not connected in the adjustment plate 1, and the liquids in the first flow channel 4 and the second flow channel 5 flow in opposite directions, during cooling, the liquids in the first flow channel 4 and the second flow channel 5 are respectively fed in from both sides, and heat exchange is performed at the same time, thereby improving the heat exchange efficiency. Moreover, the flow directions are opposite, and the convective heat exchange improves the temperature consistency, thereby avoiding excessive temperature difference on both sides of the adjustment plate 1, that is, the coolant with a lower temperature can cool the coolant with a higher temperature, and effectively alleviates the problem of uneven temperature of the battery cells caused by the single flow direction of the existing battery pack cooling scheme. It is particularly noted that the adjustment plate 1 can also heat the battery cell 2 by feeding in high-temperature liquid, and in this application, it is not limited to cooling the battery cell only, but cooling is used as an example for illustration; in addition, the adjustment plate 1 is suitable for contacting with the surface of the battery cell 2, and the adjustment plate 1 can be in direct contact with the battery cell 2, or it can be in indirect contact through a heat-conducting medium (such as heat-conducting glue).

[0044] Specifically, the adjustment plate 1 is a rectangular plate structure with a rectangular groove inside, through which the first flow channel 4 and the second flow channel 5 are formed. The first flow channel 4 and the second flow channel 5 are arranged along the length direction of the adjustment plate 1. The setting of the rectangular groove maximizes the cross-sectional area of ​​the two flow channels, thereby improving the heat exchange efficiency.

[0045] In a specific implementation of the first flow channel 4 and the second flow channel 5, the flow channels are linear flow channels. In addition, as an alternative implementation, the flow channels may also be non-linear flow channels, for example, S-shaped flow channels or spiral flow channels.

[0046] like Figure 3 As shown, in the temperature adjustment component provided in this embodiment, the first flow channel 4 and the second flow channel 5 are separated by a partition 6. The partition 6 separates the first flow channel 4 and the second flow channel 5 so that the first flow channel 4 and the second flow channel 5 are relatively close, thereby ensuring the heat exchange effect between the coolants of different temperatures in the first flow channel 4 and the second flow channel 5. Specifically, the thickness of the partition 6 should not be too thick, and it can be consistent with the wall thickness of the adjustment plate 1.

[0047] In the temperature adjustment component provided in this embodiment, the cross-sectional sizes of the first flow channel 4 and the second flow channel 5 are set according to a set ratio, so as to achieve temperature adjustment in a more targeted manner.

[0048] In a specific embodiment, the cross-sections of the first flow channel 4 and the second flow channel 5 are equal, and the partition plate 6 is arranged in the middle of the adjustment plate 1, so as to achieve uniform distribution of the flow of the upper and lower layers of the coolant.

[0049] In addition, as an alternative implementation, the partition 6 can also be arranged upward or downward, that is, the cross-sectional sizes of the first flow channel 4 and the second flow channel 5 are different, and can be reasonably adjusted according to actual flow distribution requirements.

[0050] In the temperature regulating assembly provided in this embodiment, the regulating plate 1 and the partition plate 6 are integrally formed. The integrally formed arrangement ensures that there is no flow between the two flow channels, thereby preventing the coolant from leaking out and affecting the heat exchange effect.

[0051] In addition, as an alternative embodiment, the adjustment plate 1 and the partition 6 can also be set in a split type, the partition 6 can be detachably set inside the adjustment plate 1, and a sealing ring is provided between the partition 6 and the adjustment plate 1 for sealing. Specifically, a groove is provided on the inner side wall of the adjustment plate 1, and the partition 6 is inserted in the groove.

[0052] In the temperature adjustment component provided in this embodiment, the first flow channel 4 and the second flow channel 5 are parallel to each other, and the parallel arrangement ensures the heat exchange effect between adjacent flow channels.

[0053] The temperature adjustment component provided in this embodiment has the first flow channel 4 and the second flow channel 5 distributed along the height direction of the battery cell 2. While heat can be exchanged between the first flow channel 4 and the second flow channel 5, the battery cell 2 can simultaneously exchange heat with the liquid in the first flow channel 4 and the liquid in the second flow channel 5, thereby making the temperature difference between the battery cells 2 located on both sides of the adjustment plate 1 in the length direction and the battery cells located in the middle of the adjustment plate 1 in the length direction smaller. Figure 3 As shown, the first flow channel 4 is arranged on the upper layer of the second flow channel 5 .

[0054] In addition, as an alternative embodiment, the first flow channel 4 and the second flow channel 5 can also be distributed along the thickness direction of the battery cell 2, so that the heat exchange area between the first flow channel 4 and the second flow channel 5 is larger, thereby ensuring the heat exchange effect between the first flow channel 4 and the second flow channel 5.

[0055] like Figure 3 As shown, in the temperature adjustment component provided in this embodiment, a plurality of fins are arranged in both the first flow channel 4 and the second flow channel 5. The arrangement of the fins improves the heat exchange effect of the two flow channels on the battery core.

[0056] Specifically, the fins can be the same as the cross-sectional width of the flow channel, dividing the flow channel into more narrow flow channels. For example, the adjustment plate 1 is a harmonica tube structure. In addition, as an alternative embodiment, the fins may not divide the flow channel, and only fins with a width smaller than the cross-sectional width of the flow channel may be provided on the side wall.

[0057] In addition, as an alternative embodiment, fins may not be provided in the first flow channel 4 and the second flow channel 5 .

[0058] like Figure 1 , Figure 4 and Figure 6As shown, the temperature regulating component provided in this embodiment also includes a first connecting plate 7, which is connected to the first ends of the plurality of regulating plates 1, and the first connecting plate 7 has a first liquid inlet channel 8 and a first liquid outlet channel 9 that are not connected to each other, the first liquid inlet channel 8 is connected to the first channel 4, and the first liquid outlet channel 9 is connected to the second channel 5.

[0059] like Figure 1 , Figure 4 and Figure 5 As shown, the temperature regulating component provided in this embodiment also includes a second connecting plate 10, which is connected to the second ends of the plurality of regulating plates 1, and the second connecting plate 10 has a second liquid inlet channel 11 and a second liquid outlet channel 12 which are not connected to each other, the second liquid outlet channel 12 is connected to the first channel 4, and the second liquid inlet channel 11 is connected to the second channel 5.

[0060] The first connecting plate 7 and the second connecting plate 10 are arranged to collect and deliver the coolant in the regulating plate 1. Specifically, the first connecting plate 7 and the second connecting plate 10 are parallel to each other, and the space enclosed by the first connecting plate 7, the second connecting plate 10 and the regulating plate 1 is adapted to the size of the battery cell 2.

[0061] The first liquid inlet channel 8 and the first liquid outlet channel 9, as well as the second liquid inlet channel 11 and the second liquid outlet channel 12 are separated by an isolation plate 14. The cross-sectional sizes of the first liquid inlet channel 8, the first channel 4 and the second liquid outlet channel 12 are the same. The cross-sectional sizes of the second liquid inlet channel 11, the second channel 5 and the first liquid outlet channel 9 are the same, corresponding to the formation of a unidirectional complete flow channel for the coolant, which are a complete flow channel located in the upper layer and a complete flow channel located in the lower layer respectively. After passing through a complete flow channel, the heat exchange work of the coolant in the flow channel is completed, and each complete flow channel needs to be controlled.

[0062] Specifically, the adjustment plate 1, the first connecting plate 7 and the second connecting plate 10 can be welded, crimped and glued, which can ensure the sealing between the plates and effectively prevent the coolant from flowing into the battery pack.

[0063] like Figure 7 As shown, a specific embodiment of the adjustment plate 1 is provided with a notch 13 at a position relative to the first connecting plate 7 and the isolation plate 14 in the second connecting plate 10 on the adjustment plate 1, and connecting grooves are provided on the side walls of the first connecting plate 7 and the second connecting plate 10, and the adjustment plate 1 is inserted into the connecting groove, and the notch 13 is clamped on the isolation plate 14, so that the isolation plate 14 and the adjustment plate 1 are prevented from interfering with each other, and inserting the adjustment plate 1 in the connecting groove also ensures the sealing of the connection.

[0064] like Figure 1As shown, in the temperature adjustment component provided in this embodiment, the first liquid inlet of the first liquid inlet channel 8, the first liquid outlet of the first liquid outlet channel 9, the second liquid inlet of the second liquid inlet channel 11 and the second liquid outlet of the second liquid outlet channel 12 are all located on the same side of the temperature adjustment component. It is convenient to install auxiliary parts such as pumps and valves in the cooling system, that is, the overall flow direction of each layer of the complete flow channel is a U-shaped structure, and the arrangement of multiple adjustment plates 1 enables multiple U-shaped flow directions to exist in each layer of the complete flow channel.

[0065] Specifically, analyzing the flow channel of the upper layer, the inlet of the complete flow channel is the first liquid inlet of the first liquid inlet flow channel 8, and the outlet of the complete flow channel is the second liquid outlet of the second liquid outlet flow channel 12, and the flow channel of the lower layer is opposite.

[0066] Working process of the temperature regulating component: When cooling the battery cell 2, the coolant delivery is started, such as Fig. 9 As shown, the coolant flows in from the first liquid inlet of the first liquid inlet channel 8, passes through the first liquid inlet channel 8 and the first channel 4 in sequence, and then enters the second liquid outlet channel 12, and then is sent out from the second liquid outlet of the second liquid outlet channel 12; at the same time as the coolant delivery is started, as shown in FIG. Figure 8 As shown, the coolant flows in synchronously from the second liquid inlet port of the second liquid inlet channel 11 , passes through the second liquid inlet channel 11 and the second channel 5 in sequence, enters the first liquid outlet channel 9 , and then flows out from the first liquid outlet port of the first liquid outlet channel 9 .

[0067] Example 2

[0068] like Fig.10 As shown, a specific implementation of the battery pack provided in this embodiment includes: a battery cell 2 and the temperature adjustment component described in any one of Embodiment 1, and the adjustment plate 1 of the temperature adjustment component is in contact with the large surface of the battery cell 2. Among them, the large surface of the battery cell 2 is the surface with the largest area of ​​the battery cell. It is particularly noted that the adjustment plate 1 is suitable for contacting with the large surface of the battery cell 2, and the adjustment plate 1 can be in direct contact with the large surface of the battery cell 2, or it can be in indirect contact through a heat conductive medium (such as heat conductive glue).

[0069] The temperature of the battery core 2 is regulated by the temperature regulating component, thereby improving the cooling efficiency and reducing the cooling temperature difference.

[0070] A specific installation method of a battery pack is to first place the temperature adjustment component inside the box of the battery pack, and then sequentially fill the battery cells 2 into the receiving grooves 3 of the temperature adjustment component. In addition, as an alternative implementation, the battery cells 2 may be first positioned and placed inside the box, and then the temperature adjustment component may be inserted between the battery cells 2 as a whole.

[0071] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. A temperature regulating component, characterized in that: include: A plurality of adjustment plates (1), wherein the plurality of adjustment plates (1) are arranged at intervals, and a receiving groove (3) for placing the battery cell (2) is formed between two adjacent adjustment plates (1), and the adjustment plates (1) are suitable for contacting the surface of the battery cell (2); The regulating plate (1) comprises a first flow channel (4) and a second flow channel (5); the first flow channel (4) and the second flow channel (5) are not connected to each other, and the flow directions of the first flow channel (4) and the second flow channel (5) are opposite.

2. The temperature regulating assembly according to claim 1, characterized in that: The first flow channel (4) and the second flow channel (5) are separated by a partition plate (6).

3. The temperature regulating assembly according to claim 2, characterized in that: The adjustment plate (1) and the partition plate (6) are integrally formed.

4. The temperature regulating assembly according to claim 1, characterized in that: The cross-sectional sizes of the first flow channel (4) and the second flow channel (5) are set to be equal.

5. The temperature regulating assembly according to claim 1, characterized in that: The first flow channel (4) and the second flow channel (5) are distributed along the height direction of the adjustment plate (1) or along the thickness direction of the adjustment plate (1).

6. The temperature regulating assembly according to claim 1, characterized in that: A plurality of fins are arranged in the first flow channel (4) and the second flow channel (5).

7. The temperature regulating assembly according to claim 1, characterized in that: Also includes: a first connecting plate (7) connected to the first ends of the plurality of regulating plates (1), the first connecting plate (7) having a first liquid inlet channel (8) and a first liquid outlet channel (9) which are not connected to each other, the first liquid inlet channel (8) being connected to the first channel (4), and the first liquid outlet channel (9) being connected to the second channel (5); A second connecting plate (10) is connected to the second ends of the plurality of regulating plates (1), the second connecting plate (10) having a second liquid inlet channel (11) and a second liquid outlet channel (12) which are not connected to each other, the second liquid outlet channel (12) being connected to the first channel (4), and the second liquid inlet channel (11) being connected to the second channel (5).

8. The temperature regulating assembly according to claim 7, characterized in that: The first liquid inlet flow channel (8) and the first liquid outlet flow channel (9) as well as the second liquid inlet flow channel (11) and the second liquid outlet flow channel (12) are separated by a separation plate (14); The first connecting plate (7) and the second connecting plate (10) are provided with connecting grooves for plugging into the adjusting plate (1), and a notch (13) is provided on the adjusting plate (1) at a position relative to the isolation plate (14), and the notch (13) is clamped on the isolation plate (14).

9. The temperature regulating assembly according to claim 8, characterized in that: The first liquid inlet of the first liquid inlet channel (8), the first liquid outlet of the first liquid outlet channel (9), the second liquid inlet of the second liquid inlet channel (11) and the second liquid outlet of the second liquid outlet channel (12) are all located on the same side of the temperature regulating component.

10. A battery pack, characterized in that: include: A battery cell (2) and a temperature regulating assembly as claimed in any one of claims 1 to 9, wherein the regulating plate (1) of the temperature regulating assembly is in contact with a large surface of the battery cell (2).

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