Battery pack frame, battery pack and vehicle

Abstract

This disclosure relates to a battery pack frame, a battery pack, and a vehicle. The battery pack frame includes a liquid cooling plate, a support beam, and a flow guide. The liquid cooling plate has a first flow channel, and the support beam is connected to the liquid cooling plate and has a second flow channel. One end of the flow guide is connected to the first flow channel, and the other end of the flow guide is connected to the second flow channel. The flow guide is configured to allow coolant to flow unidirectionally from the first flow channel into the second flow channel, or vice versa. This battery pack frame, through the flow guide, enables the coolant to flow unidirectionally from the first flow channel into the second flow channel, or vice versa, without backflow. This ensures the forward flow of the coolant and prevents backflow, which would affect the coolant delivery and thus avoid impacting the cooling or heating effect on the battery cells.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack technology, and more particularly to a battery pack frame, a battery pack, and a vehicle. Background Technology

[0002] In related technologies, when the coolant in the battery pack flows through the liquid cooling plate, fluctuations in the coolant flow rate may cause backflow, which can affect the cooling or heating effect on the battery pack. Utility Model Content

[0003] The purpose of this disclosure is to provide a battery pack frame, a battery pack, and a vehicle to solve the problems in the aforementioned related technologies.

[0004] To achieve the above objectives, one aspect of this disclosure provides a battery pack frame, comprising: A liquid cooling plate, wherein the liquid cooling plate is provided with a first flow channel for supplying coolant flow; A support beam is connected to the liquid cooling plate, and the support beam is provided with a second flow channel for supplying coolant flow. The flow guide is provided with one end connected to the first flow channel and the other end connected to the second flow channel. The flow guide is configured to allow coolant to flow unidirectionally from the first flow channel into the second flow channel, or vice versa.

[0005] In the above technical solution, the flow guide section enables the coolant to flow unidirectionally from the first flow channel into the second flow channel, or vice versa, preventing backflow and ensuring positive flow of the coolant. This avoids backflow affecting the coolant delivery and thus preventing any impact on the cooling or heating effect of the battery cell. The first flow channel, provided by the liquid cooling plate, allows coolant flow. After heat exchange with the battery cell, it facilitates cooling or heating of the battery cell. It should be noted that the cooling or heating of the battery cell can be configured as needed. By placing the second flow channel on the support beam, the need for fixing mechanisms and other structures can be reduced, minimizing space occupation and lowering costs, while also improving the stability of the second flow channel.

[0006] In some possible implementations, a first liquid guide port and a second liquid guide port are respectively provided at both ends of the flow guide portion, and a liquid guide channel is provided inside the flow guide portion. Both the first liquid guide port and the second liquid guide port are connected to the liquid guide channel, and the flow guiding area of ​​the liquid guide channel gradually decreases along the flow direction of the coolant.

[0007] This design allows the coolant to flow in the direction of the fluid channel, preventing backflow.

[0008] In some possible implementations, the flow area of ​​the first liquid guide port is larger than that of the second liquid guide port, and the flow guide portion is at least partially configured to be elastically deformable to change the size of the flow area of ​​the second liquid guide port.

[0009] With this setting, the coolant flow rate can be automatically adjusted according to the coolant pressure.

[0010] In some possible implementations, a receiving cavity is provided within the support beam, the receiving cavity extends along the extension direction of the support beam, the receiving cavity is configured as the second flow channel, and the flow guide is connected to the support beam.

[0011] This setup reduces space requirements and costs.

[0012] In some possible implementations, the support beam is connected to one side of the liquid cooling plate, the side of the liquid cooling plate facing the support beam is provided with a first opening, the first opening is connected to the first flow channel, the side of the support beam facing the liquid cooling plate is provided with a second opening, the second opening is connected to the second flow channel, and the flow guide is provided at the second opening.

[0013] This design reduces the connection structure between the liquid cooling plate and the coolant delivery channel, thus reducing leakage problems.

[0014] In some possible implementations, the battery pack frame further includes a connector, one end of the support beam is provided with a connection port, the connection port communicates with the second flow channel, and the connector is connected to the support beam and communicates with the connection port.

[0015] This configuration facilitates connection to either the coolant supply or coolant return end.

[0016] In some possible implementations, the support beam includes a first beam and a second beam, wherein the second flow channel of the first beam is configured as an inlet flow channel, and the second flow channel of the second beam is configured as an outlet flow channel, wherein the flow area of ​​the outlet flow channel is smaller than the flow area of ​​the inlet flow channel. Wherein, the guide portion is connected to the first beam body, the guide portion is in communication with the liquid inlet channel, and the pressure of the coolant in the liquid inlet channel is greater than the pressure of the coolant in the first channel, so that the coolant flows unidirectionally from the liquid inlet channel into the first channel; and / or, The guide section is connected to the second beam and communicates with the liquid outlet channel. The pressure of the coolant in the first channel is greater than the pressure of the coolant in the liquid outlet channel, so that the coolant flows unidirectionally from the first channel into the liquid outlet channel.

[0017] This configuration allows for flexibility and can be adjusted as needed, preventing backflow.

[0018] In some possible implementations, the number of the guide sections is multiple and they are spaced apart along the flow direction of the coolant in the second flow channel; In particular, along the flow direction of the coolant in the inlet channel, the flow area of ​​the plurality of guide sections gradually increases; Along the flow direction of the coolant in the outlet channel, the flow area of ​​the plurality of guide sections gradually decreases.

[0019] This arrangement facilitates the flow of coolant from multiple locations in the second flow channel to the liquid cooling plate, and also facilitates the flow of coolant along the extension direction of the second flow channel.

[0020] In some possible implementations, there are two first beams spaced apart, and the second beam is located between the two first beams; The space between the second beam and the two first beams is used to arrange the battery cells.

[0021] This configuration allows coolant to flow in from both sides and out from the middle, improving temperature uniformity.

[0022] In some possible implementations, the support beam includes a first beam and a second beam, wherein there are two first beams spaced apart, and the second beam is located between the two first beams. There are two liquid cooling plates, which are located on both sides of the second beam, so that the space between the second beam and the two first beams forms an independent space.

[0023] This design creates independent spaces for the two chambers, which can accommodate the battery cells.

[0024] In some possible implementations, the battery pack frame further includes a liquid inlet connector connected to the liquid cooling plate and communicating with the first flow channel.

[0025] This configuration allows for direct delivery of coolant to the liquid cooling plate, further reducing the temperature difference of the liquid cooling plate.

[0026] A second aspect of this disclosure also provides a battery pack, including the battery pack frame described above.

[0027] The above technical solutions can ensure the cooling or heating effect of the cells in the battery pack and improve the safety of the battery pack.

[0028] A third aspect of this disclosure also provides a vehicle including the aforementioned battery pack frame, or including the aforementioned battery pack.

[0029] The above technical solution can ensure the normal operation of the vehicle.

[0030] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the internal structure of the cooperation relationship between the support beam and the liquid cooling plate in one embodiment of this disclosure.

[0032] Figure 2 This is one embodiment of the present disclosure. Figure 1 An enlarged view of position A in the middle.

[0033] Figure 3 This is a three-dimensional schematic diagram showing the arrangement of the support beam according to one embodiment of the present disclosure.

[0034] Figure 4 This is a structural schematic diagram of the arrangement of the support beam according to one embodiment of the present disclosure (the arrows in the diagram indicate the flow direction of the coolant).

[0035] Figure 5 This is a cross-sectional view of the first beam according to one embodiment of this disclosure.

[0036] Figure 6 This is one embodiment of the present disclosure. Figure 5 An enlarged view of position B in the middle.

[0037] Figure 7 This is one embodiment of the present disclosure. Figure 5 An enlarged diagram of position C in the middle.

[0038] Figure 8 This is a cross-sectional view of the second beam according to one embodiment of this disclosure.

[0039] Figure 9 This is one embodiment of the present disclosure. Figure 8 An enlarged diagram of position D in the middle.

[0040] Figure 10 This is one embodiment of the present disclosure. Figure 8 An enlarged diagram of position E in the middle.

[0041] Figure 11This is a schematic diagram of the structure of a liquid cooling plate according to one embodiment of the present disclosure.

[0042] Figure 12 This is a three-dimensional schematic diagram showing the mating relationship between the liquid cooling plate and the liquid inlet connector according to one embodiment of this disclosure.

[0043] Figure 13 This is a structural schematic diagram of the fit between the liquid cooling plate and the liquid inlet connector according to one embodiment of the present disclosure (the arrows in the figure indicate the flow direction of the coolant).

[0044] Figure 14 This is a schematic diagram of the structure of a battery pack frame according to one embodiment of the present disclosure.

[0045] Explanation of reference numerals in the attached figures 1. Liquid cooling plate; 11. First flow channel; 12. First port; 2. Support beam; 21. Second flow channel; 22. First beam; 23. Second beam; 24. Second opening; 25. Connection port; 3. Flow guiding section; 31. First liquid guiding port; 32. Second liquid guiding port; 33. Liquid guiding channel; 4. Connector; 5. Liquid inlet connector; 6. Pallet. Detailed Implementation

[0046] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0047] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" are generally defined according to the usage state of the battery pack, and "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, terms such as "first" and "second" are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0049] With the development of new energy vehicles, the safety of the battery pack directly affects the safety of the entire vehicle. The battery pack needs to be kept at a suitable temperature for use, so the temperature regulation of the battery pack is particularly important.

[0050] In related technologies, when the coolant in the battery pack flows through the liquid cooling plate, fluctuations in the coolant flow rate may cause backflow, which can affect the cooling or heating effect on the battery pack.

[0051] Therefore, such as Figures 1-14 As shown, one aspect of this disclosure provides a battery pack frame, including a liquid cooling plate 1, a support beam 2, and a flow guide 3.

[0052] The liquid cooling plate 1 is provided with a first flow channel 11, which is used for the flow of coolant. It can be understood that the coolant flowing in the first flow channel 11 can generate heat exchange and realize heat exchange with the battery cell.

[0053] The support beam 2 is connected to the liquid cooling plate 1. The support beam 2 is provided with a second flow channel 21, which is used for the flow of coolant. It can be understood that the coolant flows in the second flow channel 21, which can transport the coolant and enable the coolant to circulate, flowing into or out of the battery pack.

[0054] One end of the flow guide 3 is connected to the first flow channel 11, and the other end of the flow guide 3 is connected to the second flow channel 21. The flow guide 3 is configured to allow coolant to flow unidirectionally from the first flow channel 11 into the second flow channel 21, or to allow coolant to flow unidirectionally from the second flow channel 21 into the first flow channel 11.

[0055] In the above technical solution, the flow guide 3 enables the flow of coolant, allowing it to flow unidirectionally from the first flow channel 11 into the second flow channel 21, or vice versa, preventing backflow and ensuring positive flow of the coolant. This avoids backflow affecting the coolant's delivery and thus prevents any impact on the cooling or heating effect of the battery cell. The first flow channel 11, provided by the liquid cooling plate 1, allows coolant flow. After heat exchange with the battery cell, it facilitates cooling or heating of the battery cell. It should be noted that the cooling or heating of the battery cell can be configured as needed. By placing the second flow channel 21 on the support beam 2, the need for fixing mechanisms and other structures is reduced, minimizing space occupation and lowering costs, while also improving the stability of the second flow channel 21.

[0056] Optionally, in one embodiment of this disclosure, a first liquid guide port 31 and a second liquid guide port 32 are respectively provided at both ends of the flow guide portion 3, and a liquid guide channel 33 is provided inside the flow guide portion 3. The first liquid guide port 31 and the second liquid guide port 32 are both connected to the liquid guide channel 33, and the flow guide area of ​​the liquid guide channel 33 gradually decreases along the flow direction of the coolant.

[0057] The first liquid guide port 31 and the second liquid guide port 32 are used for the inflow or outflow of coolant, respectively. That is, coolant can flow into the liquid guide channel 33 through the first liquid guide port 31 and then flow out through the second liquid guide port 32. Alternatively, coolant can flow into the liquid guide channel through the second liquid guide port 32 and then flow out through the first liquid guide port 31. This can be configured as needed. In the direction of coolant flow, the guiding area of ​​the liquid guide channel 33 gradually decreases, which facilitates the flow of coolant along the guiding direction of the liquid guide channel 33 and prevents backflow.

[0058] In some examples, the first liquid guide port 31 is used for the inflow of coolant, and the second liquid guide port 32 is used for the outflow of coolant. Thus, the flow direction of coolant is from the first liquid guide port 31, then through the liquid guide channel 33, and out of the second liquid guide port 32. Thus, the guiding area of ​​the liquid guide channel 33 decreases from the first liquid guide port 31 to the second liquid guide port 32, so that coolant is not easy to flow back from the second liquid guide port 32 into the liquid guide channel 33.

[0059] Optionally, in one embodiment of this disclosure, the flow area of ​​the first liquid guide port 31 is larger than the flow area of ​​the second liquid guide port 32, and the flow guide portion 3 is at least partially configured to be elastically deformable to change the size of the flow area of ​​the second liquid guide port 32.

[0060] The flow area of ​​the first liquid guide port 31 is larger than that of the second liquid guide port 32. That is, the first liquid guide port 31 is used for the inflow of coolant, and the second liquid guide port 32 is used for the outflow of coolant. The flow area of ​​the second liquid guide port 32 is small, which reduces the flow area of ​​the corresponding liquid guide channel 33. As a result, the coolant is less likely to flow back from the second liquid guide port 32 to the liquid guide channel 33. On the other hand, the flow area of ​​the first liquid guide port 31 is large, which facilitates the coolant to enter the liquid guide channel 33 through the first liquid guide port 31.

[0061] The guide section 3 is at least partially configured to be elastically deformable. This allows the force acting on the inner wall of the guide channel 33 to vary with coolant pressure as it flows within the guide channel 33. This alters the flow area of ​​the guide channel 33 and the flow area of ​​the second guide port 32, thereby regulating the coolant outflow and enabling flow rate self-regulation. Specifically, when the coolant pressure is high, the force on the inner wall of the guide channel 33 is greater, causing it to expand outwards. This increases the flow area of ​​the guide channel 33 and the flow area of ​​the second guide port 32, resulting in a larger outflow of coolant. Conversely, when the coolant pressure is low, the force on the inner wall of the guide channel 33 is less, causing it to retract. This reduces the flow area of ​​the guide channel 33 and the flow area of ​​the second guide port 32, resulting in a smaller outflow of coolant. The flow guide 3 has a simple structure, enabling unidirectional flow while automatically adjusting the coolant flow rate according to the coolant pressure, and has low manufacturing cost.

[0062] In some examples, the flow guide 3 can be a separate structure. The flow guide 3 may include a housing, with a liquid guiding channel 33 provided inside the housing. The housing may be elastic and may be a conical structure, that is, a structure that is larger at one end and smaller at the other.

[0063] In other examples, the flow guide 3 may be a structure formed on the support beam 2, or a part of the support beam 2, and the flow guide 3 may be able to undergo elastic deformation by partially configuring the support beam 2.

[0064] Optionally, in another embodiment of this disclosure, the flow guide 3 may include a valve body and a valve core. The valve body is provided with a first liquid guide port 31 and a second liquid guide port 32. A liquid guide channel 33 is provided inside the valve body. An elastic element may be provided inside the valve body. The elastic element is connected to the valve core. By controlling the movement of the valve core through the elastic element, the flow rate of the coolant and the backflow prevention effect can be achieved.

[0065] To reduce space occupation and cost, optionally, in one embodiment of this disclosure, a receiving cavity is provided inside the support beam 2, the receiving cavity extends along the extension direction of the support beam 2, the receiving cavity is configured as a second flow channel 21, and the flow guide 3 is connected to the support beam 2.

[0066] Understandably, the second flow channel 21 is located inside the support beam 2. A receiving cavity is formed inside the support beam 2 to supply coolant flow; this receiving cavity is the second flow channel 21. This eliminates the need for additional piping or other structures, significantly reducing space requirements and costs. After the second flow channel 21 is installed inside the support beam 2, the guide section 3 can be additionally fixed to the support beam 2, or it can be part of the support beam 2, thus facilitating communication between the guide section 3 and the second flow channel 21.

[0067] Optionally, in some examples, multiple guide sections 3 can be provided along the extension direction of the support beam 2. The multiple guide sections 3 are spaced apart to facilitate the inflow or outflow of coolant into the second flow channel 21. The second flow channel 21 can have a heat preservation function. Thus, the arrangement of multiple guide sections 3 ensures that when coolant flows into the first flow channel 11 at different positions of the liquid cooling plate 1, the temperature difference is small, which can reduce the temperature difference at different positions of the entire liquid cooling plate 1, ensure a uniform temperature effect, and thus improve the consistency of the cooling or heating effect on the battery cells at different positions.

[0068] Alternatively, in another embodiment of this disclosure, a pipe is provided on the outer wall or inside of the support beam 2. The pipe is configured as a second flow channel 21 for supplying coolant flow, and the guide portion 3 can be connected to the support beam 2.

[0069] To reduce the connection structure between the liquid cooling plate 1 and the coolant delivery channel, in one embodiment of this disclosure, the support beam 2 is connected to one side of the liquid cooling plate 1, the side of the liquid cooling plate 1 facing the support beam 2 is provided with a first opening 12, the first opening 12 is connected to the first flow channel 11, the side of the support beam 2 facing the liquid cooling plate 1 is provided with a second opening 24, the second opening 24 is connected to the second flow channel 21, and the guide part 3 is provided at the second opening 24.

[0070] The first port 12 and the second port 24 are arranged opposite to each other. After the support beam 2 is connected to one side of the liquid-cooled plate 1, a sealing effect is achieved, allowing the first port 12 and the second port 24 to communicate with each other and enabling coolant to flow between them. It can be understood that the area of ​​the side of the support beam 2 facing the liquid-cooled plate 1 is larger than that of the first port 12. After the support beam 2 is connected to the side of the liquid-cooled plate 1, it can cover the first port 12, thus achieving a sealing effect. This reduces the number of related connection structures, eliminating the need for excessive connection structures and reducing the likelihood of leakage due to limited service life. Optionally, in some examples, a sealing ring can also be provided between the support beam 2 and the liquid-cooled plate 1 to strengthen the seal at the connection point of the first port 12 and the second port 24, ensuring airtightness.

[0071] The flow guide 3 is located in the second port 24. Compared with the first port 12, the support beam 2 has lower processing and manufacturing requirements and lower manufacturing cost, which makes it easier to arrange the flow guide 3. However, the liquid cooling plate 1 has higher processing requirements, and arranging the flow guide 3 would increase the cost.

[0072] In some examples, the flow guide 3 can be a separate structure. The flow guide 3 may include a housing, with a liquid guiding channel 33 provided inside the housing. The housing may be elastic and may be a conical structure, that is, a structure that is larger at one end and smaller at the other.

[0073] In other examples, the guide section 3 may be a structure formed within the second opening 24, and may be an integral structure with the support beam 2. The support beam 2 may be thinned near the second opening 24 to allow it to undergo elastic deformation.

[0074] Optionally, in one embodiment of this disclosure, the battery pack frame further includes a connector 4, one end of the support beam 2 is provided with a connection port 25, the connection port 25 communicates with the second flow channel 21, and the connector 4 is connected to the support beam 2 and communicates with the connection port 25.

[0075] The connector 4 can be used to connect to the coolant supply end or the coolant return end, thereby realizing the supply and recovery of coolant and achieving coolant circulation. It is understood that the connector 4 can extend beyond the battery pack frame, facilitating connection to the coolant supply end or the coolant return end. In some examples, one end of the support beam 2 has a direct connection port 25, which communicates with the second flow channel 21. One end of the connector 4 can be inserted into the connection port 25 and sealed, achieving connection while preventing coolant leakage. In other examples, one end of the support beam 2 can be equipped with a connecting flange, which communicates with the connection port 25. The corresponding connector 4 can be equipped with a connecting flange pair, and the two mate to achieve connection.

[0076] Optionally, in one embodiment of this disclosure, the support beam 2 includes a first beam body 22 and a second beam body 23, wherein the second flow channel 21 of the first beam body 22 is configured as an inlet flow channel, and the second flow channel 21 of the second beam body 23 is configured as an outlet flow channel.

[0077] Understandably, the coolant enters through the second flow channel 21 of the first beam 22, flows from the second flow channel 21 of the first beam 22 to the first flow channel 11 of the liquid cooling plate 1, then flows in the first flow channel 11 of the liquid cooling plate 1, and flows to the second flow channel 21 of the second beam 23, and then flows out through the second flow channel 21.

[0078] Optionally, the guide section 3 is connected to the first beam 22 and communicates with the inlet channel. The pressure of the coolant in the inlet channel is greater than the pressure of the coolant in the first channel 11. The guide section 3 facilitates the unidirectional flow of coolant from the inlet channel into the first channel 11. Thus, the guide section 3 is positioned between the first beam 22 and the liquid-cooled plate 1, meaning it is located at the coolant inlet. The guide section 3 guides the coolant, enabling unidirectional flow and allowing the coolant to flow unidirectionally from the second channel 21 of the first beam 22 into the first channel 11. The flow rate of the coolant can also be controlled. The fact that the pressure of the coolant in the inlet channel is greater than the pressure of the coolant in the first channel 11 ensures that the coolant in the inlet channel flows towards the first channel 11.

[0079] Optionally, the guide section 3 is connected to the second beam 23 and communicates with the outlet channel. The pressure of the coolant in the first channel 11 is greater than the pressure of the coolant in the outlet channel. The guide section 3 allows the coolant to flow unidirectionally from the first channel 11 into the outlet channel. Thus, the guide section 3 is positioned between the second beam 23 and the liquid-cooled plate 1, meaning it is located at the coolant outlet. The guide section 3 guides the coolant, enabling unidirectional flow and allowing the coolant to flow unidirectionally from the first channel 11 into the second channel 21 of the second beam 23. The flow rate of the coolant can also be controlled. The pressure of the coolant in the first channel 11 is greater than the pressure of the coolant in the outlet channel, ensuring that the coolant in the first channel 11 flows towards the outlet channel. Therefore, the guide section 3 can be selectively installed in the inlet channel and / or outlet channel as needed, reducing costs and offering high flexibility. In some examples, the guide section 3 is located in the inlet channel.

[0080] Optionally, the flow area of ​​the liquid outlet channel is smaller than that of the liquid inlet channel. That is, the flow area of ​​the second channel 21 of the first beam 22 can be larger than that of the second channel 21 of the second beam 23. By setting it in this way, the residence time of the coolant in the liquid cooling plate 1 can be increased, thereby improving the heat exchange efficiency.

[0081] Optionally, in one embodiment of this disclosure, the number of guide sections 3 is multiple and they are spaced apart along the flow direction of the coolant in the second flow channel 21. The multiple guide sections 3 can guide the coolant in the second flow channel 21 to the first flow channel 11 from multiple locations, or guide the coolant in the first flow channel 11 to the second flow channel 21 from multiple locations, depending on the specific arrangement of the multiple guide sections 3.

[0082] In some examples, the flow area of ​​multiple guide sections 3 gradually increases along the flow direction of the coolant in the inlet channel. This arrangement allows the coolant to flow along the direction of the inlet channel, reaching the end of the liquid cooling plate 1 that is farther from the inlet, thus ensuring that the coolant can fully flow into the liquid cooling plate 1, improving the temperature uniformity of the liquid cooling plate 1 and reducing the temperature difference.

[0083] In some examples, the flow area of ​​multiple guide sections 3 gradually decreases along the flow direction of the coolant in the outlet channel. Since the flow area of ​​the guide section 3 at the end of the liquid cooling plate 1 that is farther from the liquid inlet is large, the pressure is low there. As a result, the coolant in the first channel 11 will converge upstream of the outlet channel, which is beneficial for the coolant to flow to the end of the liquid cooling plate 1 that is farther from the liquid inlet, thereby improving the temperature uniformity of the liquid cooling plate 1 and reducing the temperature difference.

[0084] Optionally, in one embodiment of this disclosure, there are two first beams 22 spaced apart, and a second beam 23 is located between the two first beams 22. The space between the second beam 23 and each of the two first beams 22 is used to arrange battery cells.

[0085] It is understandable that the two first beams 22 can serve as side beams, and the second beam 23 can serve as a middle beam. This allows for the arrangement of battery cells on both sides of the second beam 23, ensuring its support function. The second flow channels 21 of both first beams 22 serve as inlet channels, and the second flow channel 21 of the second beam 23 serves as an outlet channel. Thus, coolant flows in simultaneously from both sides, passes through the first flow channel 11 of the liquid cooling plate 1, and then flows out through the second flow channel 21 of the second beam 23.

[0086] Optionally, in one embodiment of this disclosure, the support beam 2 includes a first beam body 22 and a second beam body 23. There are two first beam bodies 22 and they are spaced apart. The second beam body 23 is located between the two first beam bodies 22. There are two liquid cooling plates 1, which are located on both sides of the second beam body 23, so that the space between the second beam body 23 and the two first beam bodies 22 forms an independent space.

[0087] It is understandable that the two first beams 22 are arranged parallel to the second beam 23 on both sides of the second beam 23. The spaces between the first beams 22 and the second beam 23 on both sides are independent of each other, allowing for independent arrangement of battery cells. The battery cells can be arranged as needed, realizing the design of two battery cell housing cavities. In addition, the design of the two liquid cooling plates 1 allows the state of the coolant in the liquid cooling plates 1 in the two independent spaces to be adjusted, thereby allowing for independent adjustment of the temperature of the battery cells in the two independent spaces, which can adapt to different needs.

[0088] Optionally, in one embodiment of this disclosure, the battery pack frame further includes a liquid inlet connector 5, which is connected to the liquid cooling plate 1 and communicates with the first flow channel 11.

[0089] The inlet connector 5 can be connected to the coolant supply end, thereby directly supplying coolant to the first flow channel 11 of the liquid-cooled plate 1. In other words, the coolant can simultaneously flow from the inlet connector 5 to the first flow channel 11 of the liquid-cooled plate 1 and from the second flow channel 21 of the first beam 22 to the first flow channel 11 of the liquid-cooled plate 1, achieving dual coolant supply. This configuration further reduces the temperature difference of the liquid-cooled plate 1, making its temperature more uniform. The principle is that the coolant continuously absorbs heat as it flows through the first flow channel 11 of the liquid-cooled plate 1, causing the temperature of the coolant in the later section of the first flow channel 11 to rise. By flowing coolant from both locations, some coolant can directly reach the later section of the first flow channel 11, thus compensating for the temperature rise caused by the coolant absorbing heat, thereby reducing the temperature difference of the liquid-cooled plate 1. In some examples, when the two liquid-cooled plates 1 are located in two independent spaces, inlet connectors 5 can be installed on both liquid-cooled plates 1.

[0090] When heat preservation of the battery pack is required, the inlet connector 5 can be closed, and coolant can flow into the battery through the second flow channel 21 of the first beam 22. The circulating flow of the coolant helps to keep the battery warm. Because the battery pack has a large area for heat exchange with the environment on both sides, a good heat preservation effect can be achieved. Conversely, when cooling of the battery cells is required, coolant can flow into the battery pack simultaneously through both the inlet connector 5 and the second flow channel 21 of the first beam 22.

[0091] Optionally, in one embodiment of this disclosure, the battery pack frame further includes a tray 6, a support beam 2, and a liquid cooling plate 1 connected to the tray 6. In some examples, the support beam 2 is located above the liquid cooling plate 1.

[0092] A second aspect of this disclosure also provides a battery pack, including the aforementioned battery pack frame. The battery pack further includes battery cells disposed within the battery pack frame.

[0093] A third aspect of this disclosure also provides a vehicle including the aforementioned battery pack frame, or including the aforementioned battery pack.

[0094] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0095] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0096] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A battery pack frame, characterized in that, include: A liquid cooling plate, wherein the liquid cooling plate is provided with a first flow channel for supplying coolant flow; A support beam is connected to the liquid cooling plate, and the support beam is provided with a second flow channel for supplying coolant flow. The flow guide is provided with one end connected to the first flow channel and the other end connected to the second flow channel. The flow guide is configured to allow coolant to flow unidirectionally from the first flow channel into the second flow channel, or vice versa.

2. The battery pack frame of claim 1, wherein, The flow guide is provided with a first liquid guide port and a second liquid guide port at both ends. A liquid guide channel is provided inside the flow guide. Both the first liquid guide port and the second liquid guide port are connected to the liquid guide channel. The flow guide area of ​​the liquid guide channel gradually decreases along the flow direction of the coolant.

3. The battery pack frame of claim 2, wherein, The flow area of ​​the first liquid guide port is larger than that of the second liquid guide port, and the flow guide portion is at least partially configured to be elastically deformable to change the size of the flow area of ​​the second liquid guide port.

4. The battery pack frame of claim 1, wherein, The support beam has a receiving cavity that extends along the extension direction of the support beam. The receiving cavity is configured as the second flow channel, and the flow guide is connected to the support beam.

5. The battery pack frame of claim 4, wherein, The support beam is connected to one side of the liquid cooling plate. The side of the liquid cooling plate facing the support beam has a first opening, which is connected to the first flow channel. The side of the support beam facing the liquid cooling plate has a second opening, which is connected to the second flow channel. The flow guide is located at the second opening.

6. The battery pack frame of claim 4, wherein, The battery pack frame also includes a connector, one end of the support beam is provided with a connection port, the connection port is connected to the second flow channel, and the connector is connected to the support beam and is connected to the connection port.

7. The battery pack frame of claim 1, wherein, The support beam includes a first beam and a second beam. The second flow channel of the first beam is configured as an inlet flow channel, and the second flow channel of the second beam is configured as an outlet flow channel. The flow area of ​​the outlet flow channel is smaller than the flow area of ​​the inlet flow channel. Wherein, the guide portion is connected to the first beam body, the guide portion is in communication with the liquid inlet channel, and the pressure of the coolant in the liquid inlet channel is greater than the pressure of the coolant in the first channel, so that the coolant flows unidirectionally from the liquid inlet channel into the first channel; and / or, The guide section is connected to the second beam and communicates with the liquid outlet channel. The pressure of the coolant in the first channel is greater than the pressure of the coolant in the liquid outlet channel, so that the coolant flows unidirectionally from the first channel into the liquid outlet channel.

8. The battery pack frame of claim 7, wherein, The number of the guide sections is multiple and they are spaced apart along the flow direction of the coolant in the second flow channel; In particular, along the flow direction of the coolant in the inlet channel, the flow area of ​​the plurality of guide sections gradually increases; Along the flow direction of the coolant in the outlet channel, the flow area of ​​the plurality of guide sections gradually decreases.

9. The battery pack frame of claim 7, wherein, The number of the first beams is two and they are spaced apart, and the second beam is located between the two first beams; The space between the second beam and the two first beams is used to arrange the battery cells.

10. The battery pack frame of claim 1, wherein, The supporting beam includes a first beam and a second beam. There are two first beams spaced apart. The second beam is located between the two first beams. There are two liquid cooling plates, which are located on both sides of the second beam, so that the space between the second beam and the two first beams forms an independent space.

11. The battery pack frame of any one of claims 1-10, wherein, The battery pack frame also includes a liquid inlet connector, which is connected to the liquid cooling plate and communicates with the first flow channel.

12. A battery pack, characterized by Includes the battery pack frame as described in any one of claims 1-11.

13. A vehicle characterized by comprising: It includes a battery pack frame as described in any one of claims 1-11, or a battery pack as described in claim 12.

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