Lower supporting plate, frame and vehicle

Abstract

The utility model relates to the technical field of heat dissipation, and discloses a lower supporting plate, a vehicle frame and a vehicle. The cover plate (3) is connected with the bottom plate (1), a heat-conducting medium circulating cavity (4) suitable for containing a heat-conducting medium is formed between the cover plate (3) and the bottom plate (1), and a battery pack (2) of the frame is suitable for being placed on the cover plate. The lower supporting plate of the frame is simple in structure, can bear the weight of the battery pack and cool the battery pack, and is easy to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to heat dissipation technology, and specifically, to a lower support plate. In addition, it also relates to a vehicle frame and a vehicle. Background Art

[0002] During the operation of the power battery, heat is generated. To ensure that the power battery is at a safe operating temperature, heat dissipation of the power battery is required.

[0003] In the prior art, the power battery is usually cooled by a liquid cooling plate. Generally, the liquid cooling plate is attached to the power battery so that heat transfer can occur between the two, thereby transferring the heat generated by the power battery to the liquid cooling plate, and the coolant in the liquid cooling plate absorbs the heat and conducts the heat outside the battery pack for heat dissipation.

[0004] However, the liquid cooling plate in the prior art is generally clamped between the bottom plate of the battery pack and the battery pack. Therefore, when maintaining the liquid cooling plate, it is usually necessary to disassemble the entire battery pack, making the maintenance of the liquid cooling plate time-consuming and laborious.

[0005] Therefore, a new type of lower support plate needs to be designed to solve the above existing technical problems. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a lower support plate that can solve the problem of difficult disassembly and inconvenient maintenance of the liquid cooling plate in the related art.

[0007] To solve the above technical problem, the first aspect of the utility model provides a lower support plate, including:

[0008] A bottom plate;

[0009] A cover plate, the cover plate is connected to the bottom plate, and a heat conduction medium circulation cavity suitable for accommodating a heat conduction medium is formed between the cover plate and the bottom plate. The battery pack of the vehicle frame is suitable for being placed on the cover plate.

[0010] Further, the bottom plate is suitable for being connected to the frame skeleton of the vehicle frame.

[0011] Further, the heat conduction medium circulation cavity includes a battery circulation cavity, and the battery circulation cavity is suitable for corresponding to the position of the battery pack.

[0012] Further, a first S-shaped channel is formed in the battery circulation cavity, and the lower support plate is provided with a first inlet and a first outlet, and both the first inlet and the first outlet are communicated with the first S-shaped channel.

[0013] Further, the heat-conducting medium circulation cavity further includes a control board circulation cavity, and the control board circulation cavity is adapted to correspond to the position of the electronic control system control board of the vehicle frame.

[0014] Further, a second S-shaped channel is formed in the control board circulation cavity, the lower support plate is provided with a second inlet and a second outlet, and both the second inlet and the second outlet are communicated with the second S-shaped channel.

[0015] Further, a plurality of battery positioning holes are provided on the cover plate, and the battery pack is detachably connected to the cover plate through the battery positioning holes.

[0016] Further, a plurality of connection positioning holes are provided on the bottom plate, and the bottom plate is adapted to be detachably connected to the vehicle frame skeleton through the connection positioning holes.

[0017] In a second aspect of the present invention, a vehicle frame is provided, which includes a vehicle frame skeleton, a battery pack, and the lower support plate in the above technical solution. The lower support plate is connected to the vehicle frame skeleton to enclose a receiving cavity adapted to receive the battery pack, and the battery pack is adapted to be placed on the cover plate.

[0018] Further, a heat-conducting adhesive is filled between the battery pack and the cover plate.

[0019] Further, a sealing adhesive is filled between the bottom plate and the vehicle frame skeleton of the vehicle frame.

[0020] Further, a temperature control component is further included. The heat-conducting medium circulation cavity is connected to the temperature control component, and the temperature control component is used to selectively heat or cool the heat-conducting medium in the heat-conducting medium circulation cavity.

[0021] Further, the heat-conducting medium circulation cavity includes a battery circulation cavity and a control board circulation cavity;

[0022] The battery pack is adapted to correspond to the position of the battery circulation cavity;

[0023] The vehicle frame further includes an electronic control system control board, and the electronic control system control board is adapted to be arranged in the receiving cavity and correspond to the position of the control board circulation cavity.

[0024] Further, the temperature control component includes a heat dissipation assembly. The heat dissipation assembly can dissipate heat for the battery pack through the battery circulation cavity, and / or the heat dissipation assembly can dissipate heat for the electronic control system control board through the control board circulation cavity.

[0025] Further, the temperature control component further includes a heater, and the heater is used to heat the battery pack through the battery circulation cavity.

[0026] In a third aspect of the present utility model, a vehicle is provided, which includes the vehicle frame in the above technical solution.

[0027] Through the above technical solution, the beneficial effects of the present utility model are as follows:

[0028] A lower support plate provided in the first aspect of the present utility model forms a heat conduction medium circulation cavity between a cover plate and a bottom plate by buckling them, so as to facilitate the temperature adjustment of the battery pack. At the same time, the battery pack of the vehicle frame is suitable for being placed on the cover plate, so that the lower support plate can simultaneously play the roles of carrying the battery pack and cooling the battery pack, and is convenient for disassembly and installation, facilitating the maintenance of the lower support plate.

[0029] A vehicle frame provided in the second aspect of the present utility model has a simple structure of the lower support plate, which is convenient for installation and maintenance. The lower support plate simultaneously plays the roles of carrying the battery pack and cooling the battery pack, making the overall thickness of the vehicle frame smaller.

[0030] For a vehicle provided in the third aspect of the present utility model, due to the smaller overall thickness of the vehicle frame, the vehicle chassis space can be utilized more reasonably.

[0031] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0033] Figure 1 is a schematic structural view of the lower support plate of the present utility model;

[0034] Figure 2 is a front view of the bottom plate in the lower support plate of the present utility model;

[0035] Figure 3 is a top view of the bottom plate in the lower support plate of the present utility model;

[0036] Figure 4 is a top view of the lower support plate of the present utility model;

[0037] Figure 5 is a side view of the lower support plate after being connected to the vehicle frame of the present utility model;

[0038] Figure 6 is a schematic structural view of the lower support plate after being connected to the battery pack and the electronic control system control board of the present utility model;

[0039] Figure 7 is a schematic structural view of the vehicle frame of the present utility model;

[0040] Figure 8 It is a schematic diagram of the principle of the frame of the present utility model.

[0041] Explanation of reference numerals in the drawings

[0042] 1. Bottom plate 11. Connection and positioning hole

[0043] 12. Hoisting threaded hole 2. Battery pack

[0044] 3. Cover plate 31. Battery positioning hole

[0045] 4. Heat conduction medium circulation cavity 41. Battery circulation cavity

[0046] 42. Control board circulation cavity 43. First inlet

[0047] 44. Second inlet 45. First outlet

[0048] 46. Second outlet 47. Heat exchange section

[0049] 48. Commutation section 5. Electric control system control board

[0050] 6. Temperature control component 61. Medium containing box

[0051] 62. Fan heat dissipation assembly 63. Heater

[0052] 64. Circulation pipeline Specific implementation manners

[0053] The following will describe in detail the specific implementation manners of the present utility model with reference to the drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and the protection scope of the present utility model is not limited to the following specific implementation manners.

[0054] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "arranged", "provided with", "installed", "matched", "connected" should be understood in a broad sense. For example, the connection can be a direct connection, or an indirect connection through an intermediate medium, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate connecting member, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features.

[0056] See Figures 1 to 5 The present utility model provides a lower support plate for connecting with a vehicle frame. The lower support plate includes a bottom plate 1 and a cover plate 3. A heat-conducting medium circulation cavity 4 suitable for accommodating a heat-conducting medium is formed between the cover plate 3 and the bottom plate 1. The battery pack 2 of the vehicle frame is suitable for being placed on the cover plate 3.

[0057] It can be understood that the lower support plate can form an accommodation cavity suitable for accommodating the battery pack 2 with the vehicle frame, so that the lower support plate can be used as the bottom plate of the accommodation cavity to carry the battery pack 2. In addition, a heat-conducting medium circulation cavity 4 suitable for accommodating a heat-conducting medium is formed between the cover plate 3 and the bottom plate 1, then the heat-conducting medium in the heat-conducting medium circulation cavity 4 can be used to dissipate heat from the battery pack 2, that is, the lower support plate can play the role of a liquid cooling plate. Thus, the lower support plate can simultaneously play the roles of carrying the battery pack 2 and cooling the battery pack 2. The lower support plate of the present application integrates the design of the liquid cooling plate and the lower bottom plate of the vehicle frame, thereby solving the problem in the related art that the entire battery pack needs to be disassembled for the maintenance of the liquid cooling plate, and achieving the purpose of facilitating the disassembly, installation and maintenance of the lower support plate.

[0058] Among them, the bottom plate 1 is suitable for connecting with the vehicle frame skeleton of the vehicle frame. Specifically, the lower support plate is arranged below the middle of the vehicle frame. Both the bottom plate 1 and the cover plate 3 can be aluminum alloy formed parts (for example, made of 3003 aluminum alloy material, which has good corrosion resistance and weldability), and the bottom plate 1 can be relatively thick, suitable for connecting with the vehicle frame skeleton of the vehicle frame, and a recessed part can be further opened on the bottom plate 1 so that when the cover plate 3 and the bottom plate 1 are buckled, the recessed part forms a heat-conducting medium circulation cavity 4 suitable for accommodating a heat-conducting medium.

[0059] It can be understood that in order to facilitate the circulation of the heat-conducting medium in the heat-conducting medium circulation cavity 4, a groove connected to the recessed part can be further opened on the bottom plate 1. The groove can extend to the side of the bottom plate 1. Thus, when the cover plate 3 and the bottom plate 1 are buckled, the groove can form a flow channel suitable for the heat-conducting medium to flow through, and an inlet and outlet can be formed at the side of the bottom plate 1 to facilitate connecting the heat-conducting medium circulation cavity 4 with external equipment to realize the circulation of the heat-conducting medium. The bottom plate 1 and the cover plate 3 can be specifically connected by vacuum brazing to ensure the sealing performance of the joint between the two, so as to prevent the heat-conducting medium from leaking out of the heat-conducting medium accommodating cavity. In addition, the heat-conducting medium can be selected as ethylene glycol solution.

[0060] Based on the above design, the lower support plate can be arranged below the middle part of the vehicle frame, and the overall structure of the lower support plate is simple, which can provide a large installation operation space for the lower support plate, facilitate disassembly, and is easy for later maintenance. Moreover, the lower support plate of the vehicle frame can be relatively thin and light, and can be directly used to carry the battery pack 2 in the battery compartment, so there is no need to separately set up a bottom plate 1 to carry the battery pack 2 in the battery compartment, thereby saving chassis space.

[0061] Specifically, the heat-conducting medium circulation cavity 4 includes a battery circulation cavity 41, and the battery circulation cavity 41 is adapted to correspond to the position of the battery pack 2. That is, the battery pack 2 is placed above the battery circulation cavity 41. By corresponding the position of the battery circulation cavity 41 with the battery pack 2, the battery pack 2 can be better cooled.

[0062] Further, referring to Figure 1 and Figure 3 , a first S-shaped channel is formed in the battery circulation cavity 41. The lower support plate is provided with a first inlet 43 and a first outlet 45, and both the first inlet 43 and the first outlet 45 are connected to the first S-shaped channel. Setting the S-shaped channel can extend the flow path of the heat-conducting medium, thereby improving the heat transfer effect and reducing the circulation speed, thus saving energy. Specifically, the extension path of the first S-shaped channel can be determined according to the arrangement of the battery packs 2. Generally, multiple battery packs 2 are combined into a battery pack 2 unit, and the length and direction of the battery pack 2 unit are generally consistent with the width direction of the vehicle. Then, the first S-shaped channel can be divided into a heat exchange section 47 with a larger flow area and a commutation section 48 with a smaller flow area. The extension direction of each heat exchange section 47 can be set to be consistent with the length direction of the battery pack 2 unit, and the width of each heat exchange section 47 can be set to be consistent with the width of the battery pack 2 unit, so that the heat exchange section 47 can better correspond to the battery pack 2 unit to obtain a better heat exchange effect. The commutation section 48 is used to connect the two heat exchange sections 47. It can be understood that the flow area of the heat exchange section 47 can be determined according to the rated power of the battery pack 2. If the rated power of the battery pack 2 is larger, the heat generation speed during its operation is faster, then the flow area of the heat exchange section 47 needs to be larger to obtain a higher heat dissipation efficiency. If the rated power of the battery pack 2 is smaller, the heat generation speed during its operation is slower, then the flow area of the heat exchange section 47 can be smaller.

[0063] Specifically, referring to Figure 6 , the heat-conducting medium circulation cavity 4 further includes a control board circulation cavity 42, and the control board circulation cavity 42 is adapted to correspond to the position of the electronic control system control board 5 of the vehicle frame. That is, the electronic control system control board 5 is placed above the control board circulation cavity 42. By corresponding the position of the control board circulation cavity 42 with the electronic control system control board 5, the electronic control system control board 5 can be better cooled.

[0064] It can be understood that an electronic control system control board 5 is also suitably arranged in the accommodation cavity. The heat-conducting medium circulation cavity 4 may include two independent chambers, namely a battery circulation cavity 41 matched with the battery pack 2 and a control board circulation cavity 42 matched with the electronic control system control board 5. During assembly, the battery pack 2 is placed at a position on the cover plate 3 corresponding to the battery circulation cavity 41, so that the battery pack 2 can transfer heat to the heat-conducting medium in the battery circulation cavity 41 through the cover plate 3. The electronic control system control board 5 is placed at a position on the cover plate 3 corresponding to the control board circulation cavity 42, so that the electronic control system control board 5 can transfer heat to the heat-conducting medium in the control board circulation cavity 42 through the cover plate 3. Thus, independent circulation control can be performed on the heat-conducting medium in the battery circulation cavity 41 and the heat-conducting medium in the control board circulation cavity 42 according to the temperatures of the battery pack 2 and the electronic control system control board 5, so that both the battery pack 2 and the electronic control system control board 5 can be within a suitable operating temperature range.

[0065] Specifically, a second S-shaped channel is formed in the control board circulation cavity 42. The lower support plate is provided with a second inlet 44 and a second outlet 46. Both the second inlet 44 and the second outlet 46 are connected to the second S-shaped channel. Arranging the S-shaped channel can extend the flow path of the heat-conducting medium and ensure that the heat-conducting medium can fully transfer heat to the electronic control system control board 5.

[0066] See Figure 2 and Figure 3 , in order to achieve independent circulation control of the heat-conducting medium in the battery circulation cavity 41 and the heat-conducting medium in the control board circulation cavity 42, inlets and outlets can be arranged on the lower support plate to be respectively connected to the battery circulation cavity 41 and the control board circulation cavity 42. Specifically, multiple grooves can be formed on the bottom plate 1. Some grooves are connected to the battery circulation cavity 41 and extend to the side of the bottom plate 1. Thus, when the cover plate 3 and the bottom plate 1 are buckled, a flow channel communicating with the battery circulation cavity 41 is formed, and a first inlet 43 and a first outlet 45 are formed at the side of the bottom plate 1; another part of the grooves are connected to the control board circulation cavity 42 and extend to the side of the bottom plate 1. Thus, when the cover plate 3 and the bottom plate 1 are buckled, a flow channel communicating with the control board circulation cavity 42 is formed, and a second inlet 44 and a second outlet 46 are formed at the side of the bottom plate 1. The first inlet 43 and the first outlet 45 are both communicated with the battery circulation cavity 41, and the second inlet 44 and the second outlet 46 are both communicated with the control board circulation cavity 42. Further, the first inlet 43 and the second inlet 44 can be connected to different circulation pumps or connected to the same circulation pump and selectively supply the heat-conducting medium to the battery circulation cavity 41 or the control board circulation cavity 42 through the opening and closing control of the electronic control valve, so as to achieve independent control of the circulation of the heat-conducting medium in the battery circulation cavity 41 and the control board circulation cavity 42.

[0067] Specifically, see Figure 7, threaded joints can be provided at the first inlet 43, the second inlet 44, the first outlet 45 and the second outlet 46 to facilitate screwing connection with the circulation pipeline 64, realizing the quick connection of the circulation pipeline 64. And seals are provided inside the first inlet 43, the second inlet 44, the first outlet 45 and the second outlet 46 to ensure the sealing performance between the threaded joints and the first inlet 43, the second inlet 44, the first outlet 45 and the second outlet 46, so as to prevent the leakage of the heat-conducting medium. The threaded joints can be made of PA66 thermoplastic resin material to endow the threaded joints with good mechanical strength, hardness and rigidity. In addition, sealing performance can also be provided at the connection between the threaded joints and the side of the bottom plate 1, so that after the circulation pipeline 64 is screwed with the threaded joints, the pipe end of the circulation pipeline 64 can abut against the seal to achieve the seal between the circulation pipeline 64 and the circulation pipeline 64. Among them, the seal can be made of EPDM material to have good wear resistance and acid and corrosion resistance.

[0068] See Figure 1 and Figure 4 , a plurality of battery positioning holes 31 are provided on the cover plate 3, so that the battery pack 2 can be fixedly installed on the cover plate 3 by screwing connection with the battery positioning holes 31. A plurality of connection positioning holes 11 are provided on the bottom plate 1, and the vehicle frame skeleton can be screwed with the connection positioning holes 11 to realize the connection between the bottom plate 1 and the vehicle frame skeleton. And the connection positioning holes 11 can be set to have assembly allowances to facilitate the adjustment of the bottom plate 1, eliminate the machining errors between the connection positioning holes 11 on the bottom plate 1 and the threaded holes opened on the vehicle frame skeleton, and facilitate the installation of the bottom plate 1. In addition, see Figure 1 and Figure 5 , a lifting threaded hole 12 can also be opened on the side of the bottom plate 1 and a swivel bolt can be installed in the lifting threaded hole 12, so that a hoisting device or a lifting device can be connected with the swivel bolt to facilitate the adjustment of the position of the bottom plate 1 and facilitate the installation and disassembly of the bottom plate 1.

[0069] In the second aspect of the present utility model, a vehicle frame is provided. See Figure 6 and Figure 7 , which includes the vehicle frame skeleton, the lower support plate and the battery pack 2 in the above technical solution. The lower support plate and the vehicle frame skeleton are connected to enclose a receiving cavity suitable for receiving the battery pack 2, and the battery pack 2 is suitable for being placed on the cover plate 3.

[0070] The vehicle frame further includes a temperature control component 6. The heat-conducting medium circulation cavity 4 is connected to the temperature control component 6. The temperature control component 6 is adapted to adjust the temperature of the heat-conducting medium in the heat-conducting medium circulation cavity 4. Specifically, the temperature control and regulation component can be set to cool the heat-conducting medium when the temperature of the battery pack 2 itself is relatively high, so as to achieve the cooling of the battery pack 2 through the heat exchange between the heat-conducting medium and the battery pack 2, thereby ensuring that the battery pack 2 will not overheat and catch fire, and there is no need to reduce the discharge power of the battery pack 2 to achieve the cooling of the battery pack 2, so it is not easy to have a situation of power decline. In addition, it can also heat up the heat-conducting medium when the temperature of the battery pack 2 itself is relatively low, so as to achieve the heating of the battery pack 2 through the heat exchange between the heat-conducting medium and the battery pack 2, so as to ensure that the battery pack 2 is not prone to serious power loss and cannot work properly in a low-temperature environment.

[0071] It can be understood that if the battery system further includes an electronic control system control board 5 arranged in the battery compartment, the temperature control and regulation component can be set to cool the heat-conducting medium when the temperature of the electronic control system control board 5 itself is relatively high, so as to achieve the cooling of the electronic control system control board 5 through the heat exchange between the heat-conducting medium and the electronic control system control board 5, thereby ensuring that the electronic control system control board 5 will not overheat and fail to work properly. In addition, it can also heat up the heat-conducting medium when the temperature of the electronic control system control board 5 itself is relatively low, so as to achieve the heating of the electronic control system control board 5 of the battery pack 2 through the heat exchange between the heat-conducting medium and the electronic control system control board 5, so as to ensure that the electronic devices in the electronic control system control board 5 are not easily damaged in a low-temperature environment.

[0072] Specifically, during the assembly process of the battery system, heat-conducting glue can be filled between the battery pack 2 and the cover plate 3, and heat-conducting glue is also filled between the electronic control system control board 5 and the cover plate 3 (not shown in the figure). The heat-conducting glue can adopt PU-2210 heat-conducting structural glue. This heat-conducting structural glue is a heat-conducting and highly flame-retardant two-component polyurethane, and it is a PU structural glue designed for the safety problems of power batteries. It has good mechanical properties, flame retardancy, heat conductivity and durability, so as to be able to fill the gaps between the battery pack 2 and the cover plate 3 and between the electronic control system control board 5 and the cover plate 3 densely with the heat-conducting glue, so as to ensure efficient heat transfer between the battery pack 2 and the electronic control system control board 5 and the cover plate 3, and this heat-conducting glue can also play a role in fixing the electronic control system control board 5 on the cover plate 3.

[0073] In addition, during the assembly process of the battery system, sealant (not shown in the figure) needs to be filled between the bottom plate 1 and the vehicle frame skeleton to ensure the tightness of the battery compartment and prevent the battery compartment from being flooded and affecting the battery pack 2 and the electronic control system control board 5. This sealant can be MS688 type sealant.

[0074] See Figure 7, the temperature control component 6 can be specifically set to include a medium containing box 61 suitable for containing a heat conducting medium, a heat dissipation assembly 62, a circulation pump, a heater 63, a circulation pipeline 64, and a temperature sensor. The heat conducting medium circulation cavity 4, the heat dissipation assembly 62, and the heater 63 are all communicated with the medium containing box 61 via the circulation pipeline 64, and the circulation pump is arranged on the circulation pipeline 64, and the temperature sensor is arranged in the circulation pipeline 64 and / or the heat conducting medium circulation cavity 4.

[0075] Specifically, referring to Figure 7 and Figure 8 , taking the heat conducting medium circulation cavity 4 including a battery circulation cavity 41 and a control board circulation cavity 42 as an example, the two circulation pipelines 64 connected to the first outlet 45 and the second outlet 46 can be connected to the total circulation pipeline 64 through a three-way valve and connected to the medium containing box 61 by the total circulation pipeline 64. The circulation pump is arranged on the total circulation pipeline 64, and then the fan heat dissipation assembly 62 and the medium containing box 61 are communicated through the circulation pipeline 64. Finally, the fan heat dissipation assembly 62 and the medium containing box 61 can be directly connected to the first inlet 43 (i.e., the battery circulation cavity 41) and the second inlet 44 (i.e., the control board circulation cavity 42) through the circulation pipeline 64. The circulation pipeline 64 connecting the fan heat dissipation assembly 62 and the medium containing box 61 to the first inlet 43 and the second inlet 44 can be connected to an electric control four-way valve to be able to control the flow direction of the heat conducting medium and the ratio of the flow direction to the battery circulation cavity 41 and the control board circulation cavity 42 through the electric control four-way valve, and a heater 63 can be arranged on the circulation pipeline 64 connected to the first inlet 43.

[0076] In addition, a sensor can be arranged on the total circulation pipeline 64 as an outlet temperature sensor to detect the temperature of the heat conducting medium entering the medium containing box 61. Of course, a temperature sensor can also be arranged in each of the battery circulation cavity 41 and the control board circulation cavity 42 as an in-cavity temperature sensor to detect the temperature of the heat conducting medium in the battery circulation cavity 41 and the control board circulation cavity 42. A temperature sensor can also be arranged on the circulation pipeline 64 connecting the heater 63 and the first inlet 43 as an inlet temperature sensor to detect the temperature of the heat conducting medium flowing out of the heater 63.

[0077] Based on the above design, the heat-conducting medium in the battery circulation chamber 41 and the heat-conducting medium in the control board circulation chamber 42 can first be pumped into the medium storage tank 61 under the action of the circulation pump. At this time, if the temperatures detected by the outlet temperature sensor and the in-chamber temperature sensor do not exceed the heat dissipation temperature T1, then through the control of the electronic control four-way valve, the heat-conducting medium in the medium storage tank 61 can directly flow to the battery circulation chamber 41 and the control board circulation chamber 42. If the temperature detected by either the outlet temperature sensor or the in-chamber temperature sensor exceeds the heat dissipation temperature T1 but is less than the alarm temperature T2, then through the control of the electronic control four-way valve, the heat-conducting medium in the medium storage tank 61 can first flow to the fan heat dissipation assembly 62 for heat dissipation and then enter the battery circulation chamber 41 and the control board circulation chamber 42, and the flow rate of the heat-conducting medium can be distributed according to the temperature of the heat-conducting medium in the battery circulation chamber 41 and the control board circulation chamber 42. Specifically, the higher the temperature of the heat-conducting medium in a chamber, the greater the flow rate of the heat-conducting medium supplied into it. If the temperature detected by either the outlet temperature sensor or the in-chamber temperature sensor exceeds the alarm temperature T2, an alarm can be directly triggered. In addition, it can be understood that if the temperature sensor in the battery circulation chamber 41 detects that the heat-conducting medium in the battery circulation chamber 41 is below the suitable operating temperature T3, then through the control of the electronic control four-way valve, the heat-conducting medium in the medium storage tank 61 can directly flow to the battery circulation chamber 41, and the heater 63 can be turned on to heat the heat-conducting medium. The heating power of the heater 63 is controlled by the temperature feedback of the inlet temperature sensor, so that the temperature of the heat-conducting medium entering the battery circulation chamber 41 is between T3 and T1.

[0078] The third aspect of the present utility model provides a vehicle, including the vehicle frame in the above technical solution. Since the above vehicle frame has the technical advantages of being thin, light, and convenient for disassembly, installation, and maintenance, therefore, the use of the chassis space of the vehicle will be more reasonable, a larger ground clearance can be obtained, and the situation where the battery compartment occupies the interior space of the vehicle is not likely to occur.

[0079] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all belong to the protection scope of the present utility model.

[0080] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.

[0081] In addition, any combination can be made among various different embodiments of the present utility model, as long as it does not violate the idea of the present utility model, and it should equally be regarded as the content disclosed by the present utility model.

Claims

1. A lower support plate of a frame, characterized in that: include: Bottom plate (1); A cover plate (3), the cover plate (3) being connected to the base plate (1), a heat-conducting medium circulation cavity (4) suitable for accommodating a heat-conducting medium being formed between the cover plate (3) and the base plate (1), and the battery pack (2) of the vehicle frame being suitable for being placed on the cover plate (3).

2. The lower support plate according to claim 1, characterized in that: The bottom plate (1) is suitable for being connected to the frame skeleton of the frame.

3. The lower support plate according to claim 1, characterized in that: The heat-conducting medium circulation chamber (4) comprises a battery circulation chamber (41), and the battery circulation chamber (41) is suitable for corresponding to the position of the battery pack (2).

4. The lower support plate according to claim 3, characterized in that: A first S-shaped channel is formed in the battery circulation chamber (41), and the lower support plate is provided with a first inlet (43) and a first outlet (45), and the first inlet (43) and the first outlet (45) are both connected to the first S-shaped channel.

5. The lower support plate according to claim 1, characterized in that: The heat-conducting medium circulation chamber (4) further comprises a control board circulation chamber (42), and the control board circulation chamber (42) is suitable for corresponding to the position of the electric control system control board (5) of the vehicle frame.

6. The lower support plate according to claim 5, characterized in that: A second S-shaped channel is formed in the control plate circulation chamber (42), and the lower support plate is provided with a second inlet (44) and a second outlet (46), and the second inlet (44) and the second outlet (46) are both connected to the second S-shaped channel.

7. The lower support plate according to claim 1, characterized in that: The cover plate (3) is provided with a plurality of battery positioning holes (31), and the battery pack (2) is detachably connected to the cover plate via the battery positioning holes (31).

8. The lower support plate according to claim 2, characterized in that: The bottom plate (1) is provided with a plurality of connection positioning holes (11), and the bottom plate (1) is suitable for being detachably connected to the frame skeleton via the connection positioning holes (11).

9. A vehicle frame, characterized in that: It comprises a frame, a battery pack (2) and a lower support plate as claimed in any one of claims 1 to 8, wherein the lower support plate is connected to the frame to enclose a receiving cavity suitable for receiving the battery pack (2), and the battery pack (2) is suitable for being placed on the cover plate (3).

10. The frame according to claim 9, characterized in that: Thermally conductive glue is filled between the battery pack (2) and the cover plate (3).

11. The frame according to claim 9, characterized in that: Sealant is filled between the bottom plate (1) and the frame skeleton of the frame.

12. The frame according to claim 9, characterized in that: It also comprises a temperature control component (6), the heat-conducting medium circulation cavity (4) is connected to the temperature control component (6), and the temperature control component (6) is used to selectively heat or cool the heat-conducting medium in the heat-conducting medium circulation cavity.

13. The frame according to claim 12, characterized in that: The heat-conducting medium circulation chamber (4) comprises a battery circulation chamber (41) and a control board circulation chamber (42); The battery pack (2) is adapted to correspond to the position of the battery circulation chamber (41); The vehicle frame further comprises an electric control system control panel (5), wherein the electric control system control panel (5) is suitable for being arranged in the accommodating cavity and corresponding to the position of the control panel circulation cavity (42).

14. The frame according to claim 13, characterized in that: The temperature control component (6) includes a heat dissipation assembly (62), and the heat dissipation assembly (62) is capable of dissipating heat for the battery pack (2) through the battery circulation chamber (41), and / or the heat dissipation assembly (62) is capable of dissipating heat for the electronic control system control board (5) through the control board circulation chamber (42).

15. The frame according to claim 14, characterized in that The temperature control component (6) further comprises a heater (63), and the heater (63) is used to heat the battery pack (2) through the battery circulation chamber (41).

16. A vehicle, characterized in that: A frame comprising the frame according to any one of claims 9 to 15.

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