Edge beam and frame of battery pack, battery pack and vehicle

Abstract

The utility model discloses a battery pack boundary beam, a frame, a battery pack and a vehicle, a distribution box cooling flow channel is formed on the boundary beam, and the distribution box cooling flow channel is used for a cooling medium which exchanges heat with a distribution box to flow. Therefore, through the arrangement of the boundary beam, the distribution box can be fully cooled under the condition that the structure of the whole battery pack is not changed, so that the problems of over-high temperature, slow heat dissipation of the whole battery pack, non-uniform heat dissipation, large temperature difference of the whole battery pack and the like in the charging and distribution process of the battery pack are effectively solved, the risk of thermal runaway of the battery pack is further reduced, and the driving safety of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a side beam of a battery pack, a frame, a battery pack and a vehicle. Background Art

[0002] In a battery pack, a distribution box is usually provided to control and protect the batteries. When the current flowing through the battery pack is large, the components and connecting conductive bars of the distribution box will heat up and affect the performance of the distribution box.

[0003] In the related technology, most existing solutions integrate the battery cell cooling and the power distribution cooling or set up a cooling system for the power distribution outside the tray. This not only affects the heat dissipation performance of the battery cell, but also fails to sufficiently cool the power distribution module, and increases the number of components in the entire package, reducing the integration of the entire package. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a side beam of a battery pack, which can fully cool the distribution box without changing the entire structure of the battery pack.

[0005] The utility model further provides a frame.

[0006] The utility model further provides a battery pack.

[0007] The utility model further provides a vehicle.

[0008] According to the side beam of the battery pack of the first aspect of the utility model, the side beam is formed with a distribution box cooling flow channel, and the distribution box cooling flow channel is used for the flow of a cooling medium for heat exchange with the distribution box.

[0009] Therefore, by providing the side beam, the distribution box can be fully cooled without changing the overall structure of the battery pack, thereby effectively improving the problems of excessive temperature of the battery pack, slow heat dissipation of the entire pack, uneven heat dissipation, large temperature difference of the entire pack, etc. during the charging and distribution process, thereby reducing the risk of thermal runaway of the battery pack and improving vehicle driving safety.

[0010] In some examples of the present invention, the side beam has a first surface facing the distribution box and a second surface facing the battery cell, and the distribution box cooling channel is adjacent to the first surface and away from the second surface.

[0011] In some examples of the present invention, in the length direction of the side beam, the cooling channel of the distribution box is located at the center of the side beam.

[0012] In some examples of the present invention, the side beam includes: a side beam body, the side beam body forming the cooling channel of the distribution box; a temperature equalizing plate, the temperature equalizing plate is arranged on the side beam body and covers the cooling channel of the distribution box, and the cooling medium in the cooling channel of the distribution box is heat exchanged with the distribution box through the temperature equalizing plate.

[0013] In some examples of the present invention, the side beam body is a one-piece piece.

[0014] In some examples of the present invention, a side surface of the temperature homogenizing plate facing the power distribution box is flush with a side surface of the side beam body facing the power distribution box.

[0015] In some examples of the present invention, the cooling channel of the distribution box includes: a first channel, and the first channel extends in a winding manner in the side beam.

[0016] In some examples of the present invention, the first flow channel includes: a plurality of first flow segments, the plurality of first flow segments are arranged at intervals and parallel to each other; a plurality of second flow segments, a second flow segment is connected between the ends of two adjacent first flow segments, and in the extension direction of the first flow segment, two adjacent second flow segments are connected to the two ends of the same first flow segment.

[0017] In some examples of the present invention, the side beam has a through hole, the through hole corresponds to the position of the connector of the distribution box, and the first flow channel and the through hole are spaced apart in the length direction of the side beam.

[0018] In some examples of the present invention, the distribution box cooling channel also includes: a second channel, the second channel is connected to the first channel, the second channel extends along the length direction of the side beam and is spaced apart from the perforation in the height direction of the side beam.

[0019] In some examples of the present invention, the distribution box cooling channel has an inlet and an outlet, and in the length direction of the side beam, the inlet and the outlet are located on the same side of the distribution box cooling channel; or in the length direction of the side beam, the inlet and the outlet are respectively located on opposite sides of the distribution box cooling channel.

[0020] In some examples of the present invention, the inlet extends along the width direction of the side beam; and / or the outlet extends along the length direction of the side beam.

[0021] The frame according to the second aspect of the utility model includes: the front side beam of the above-mentioned battery pack.

[0022] The battery pack according to the third aspect of the utility model comprises: the above-mentioned frame; and a distribution box, wherein the distribution box is arranged on the side beam.

[0023] In some examples of the present invention, the distribution box includes: a box body, which is arranged in the side beam; an electronic control module, which is arranged in the box body; and a compressor control module, which is arranged in the box body and electrically connected to the electronic control module.

[0024] In some examples of the present invention, the compressor control module includes: a compressor controller; and a fuse, wherein the fuse is respectively connected to the compressor controller and the electronic control module.

[0025] In some examples of the present invention, the power distribution box further includes: a connector, which is disposed on the box body and electrically connected to the electronic control module; and a compressor connector, which is disposed on the box body and electrically connected to the compressor control module.

[0026] In some examples of the present invention, the battery pack further includes: a bottom plate, the bottom plate is arranged at the bottom of the frame, the bottom plate is formed with a battery cell cooling channel, the battery cell cooling channel is for the flow of a cooling medium for heat exchange with the battery cell, and the battery cell cooling channel and the distribution box cooling channel are independent of each other.

[0027] A vehicle according to a fourth aspect of the utility model comprises: the above-mentioned battery pack.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a schematic structural diagram of a battery pack according to an embodiment of the utility model;

[0031] Figure 2 is an exploded view of a battery pack according to an embodiment of the utility model;

[0032] Figure 3 It is a partial structural schematic diagram of the side beam and the distribution box according to an embodiment of the utility model;

[0033] Figure 4 It is a partial structural schematic diagram of a side beam (without a distribution box) according to an embodiment of the utility model.

[0034] Reference numerals:

[0035] 100. Battery pack;

[0036] 1. Frame; 11. Side beam; 111. Cooling channel of distribution box; 1111. First channel; 11111. First flow section; 11112. Second flow section; 1112. Second channel; 1113. Inlet; 1114. Outlet; 112. Side beam body; 113. Temperature averaging plate; 12. Longitudinal beam; 13. Tray; 14. Maintenance cover; 15. Seal;

[0037] 2. Power distribution box; 21. Box body; 22. Electronic control module; 23. Compressor control module; 24. Connector; 25. Compressor connector; 26. Base plate. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0039] Reference below Figure 1-Figure 4 The side beam 11 according to the embodiment of the utility model is described, which can fully cool the distribution box 2 without changing the overall structure of the battery pack 100.

[0040] Combination Figure 1-Figure 4 As shown, the side beam 11 of the battery pack 100 according to the first embodiment of the utility model is formed with a distribution box cooling channel 111, and the distribution box cooling channel 111 is used for the flow of cooling medium for heat exchange with the distribution box 2. Among them, the side beam 11 is the main structure of the battery pack 100 frame, which protects and supports the battery pack 100.

[0041] Specifically, the side beam 11 on the battery pack 100 is formed with a distribution box cooling channel 111, and the cooling medium in the distribution box cooling channel 111 can continuously circulate and continuously exchange heat with the distribution box 2, thereby achieving the effect of fully cooling the distribution box 2. For example, when the battery pack 100 is charging and distributing electricity, the distribution box 2 generates a lot of heat, and there will be a large temperature difference with the battery pack 100. At this time, the low-temperature cooling medium in the distribution box cooling channel 111 can cool the distribution box 2 by exchanging heat with the high-temperature air at the distribution box 2, thereby improving the cooling efficiency of the distribution box 2.

[0042] Compared with the traditional arrangement of integrating battery cell cooling and distribution cooling, the embodiment in the present case can specially form a distribution box cooling channel 111 with heat exchange for the distribution box 2, thereby ensuring the cooling efficiency of the distribution box 2, so that the temperature of the entire battery pack 100 is within a normal range during the charging and distribution process, avoiding the problems of uneven heat dissipation and large temperature difference between the battery cell and the distribution box 2.

[0043] In addition, compared to the traditional method of arranging a cooling system for the distribution box separately on the outside of the battery pack tray, the embodiment in the present case can also achieve the effect of special cooling of the distribution box 2 without changing the original structural frame of the battery pack 100. This can reduce the number of components in the entire package, thereby improving the integration of the entire package, and thus taking into account the cooling effect of the distribution box 2 and the integration effect of the entire battery pack 100.

[0044] Therefore, by providing the side beam 11, the distribution box 2 can be fully cooled without changing the overall structure of the battery pack 100, thereby effectively improving the problems of the battery pack 100 such as excessive temperature, slow heat dissipation, uneven heat dissipation, and large temperature difference during the charging and distribution process, thereby reducing the risk of thermal runaway of the battery pack 100 and improving vehicle driving safety.

[0045] According to some optional embodiments of the present invention, combined with Figure 1 , Figure 3 and Figure 4 As shown, the side beam 11 has a first surface facing the distribution box 2 and a second surface facing the battery cell, and the distribution box cooling channel 111 is adjacent to the first surface and away from the second surface. For example, the side beam 11 can be a front side beam 11, a rear side beam 11, a left side beam 11 or a right side beam 11, but is not limited thereto.

[0046] Specifically, a first surface is formed on the side of the side beam 11 facing the distribution box 2, and a second surface is formed on the side of the side beam 11 facing the battery cell, that is, the side beam 11 can separate the battery cell and the distribution box 2, and the side beam 11 can protect and install the battery cell and the distribution box 2.

[0047] Among them, the distribution box cooling channel 111 is closer to the first surface of the distribution box 2, so that the distance between the distribution box cooling channel 111 and the distribution box 2 can be shortened, thereby improving the heat exchange cooling efficiency of the cooling medium in the distribution box cooling channel 111 to the distribution box 2. At the same time, although the distribution box cooling channel 111 is far away from the second surface of the distribution box 2, it can also play an auxiliary role in the heat dissipation of the battery cell to a certain extent, thereby improving the heat dissipation performance of the entire battery pack 100.

[0048] According to some optional embodiments of the present invention, combined with Figure 1 , Figure 3 and Figure 4 As shown, in the length direction of the side beam 11 , the cooling channel 111 of the distribution box is located at the center of the side beam 11 .

[0049] In detail, in the length direction of the side beam 11 (that is, the left and right direction), the distribution box cooling channel 111 is arranged in the central area of ​​the side beam 11. Such an arrangement can improve the uniformity of heat dissipation of the distribution box 2 in the length direction, avoid the temperature difference problem caused by uneven heat dissipation on both sides of the length direction of the distribution box 2, thereby improving the overall heat dissipation effect of the distribution box 2 and extending the service life of the components in the distribution box 2.

[0050] According to some optional embodiments of the present invention, combined with Figure 1 and Figure 4 As shown, the side beam 11 includes a side beam body 112 and a temperature averaging plate 113. The side beam body 112 is formed with a distribution box cooling channel 111. The temperature averaging plate 113 is arranged on the side beam body 112, and the temperature averaging plate 113 covers the distribution box cooling channel 111. The cooling medium in the distribution box cooling channel 111 is heat exchanged with the distribution box 2 through the temperature averaging plate 113.

[0051] Among them, the side beam body 112 is constructed as the main structural part of the side beam 11 profile, and a distribution box cooling channel 111 for providing a flow path for the cooling medium is formed on the side beam body 112. The temperature equalizing plate 113 is sealed between the distribution box cooling channel 111 and the side beam body 112. The temperature equalizing plate 113 can directly contact the side of the distribution box cooling channel 111 facing the battery cell, thereby increasing the heat exchange area of ​​the distribution box cooling channel 111 and the distribution box 2, thereby improving the heat dissipation uniformity at the distribution box 2 and reducing the temperature difference at the distribution box 2.

[0052] In detail, the temperature equalizing plate 113 is a heat transfer element, which is a vacuum cavity with a microstructure on the inner wall. It has the advantages of strong thermal conductivity (thermal conductivity can reach 3000-10000 W / (m·K)), large heat dissipation power (by changing the heat dissipation area, changing the local large heat flux density heat dissipation problem), good temperature equalization performance (temperature difference is less than 5°C) and strong structural adaptability (the shape is not restricted, it can be square, round, etc., to adapt to various heat dissipation environments).

[0053] Specifically, the side beam body 112 is an integrated part. The side beam body 112 and the power distribution box cooling channel 111 are integrally die-cast, which can improve the overall structural properties and structural stability of the side beam body 112 compared to the split connection, and can also reduce the number of parts, thereby improving the integrated design effect and structural reliability of the battery pack 100.

[0054] Furthermore, combined with Figure 3 and Figure 4As shown, the surface of the temperature averaging plate 113 on one side facing the distribution box 2 is flush with the surface of the side beam body 112 on one side facing the distribution box 2. It can be understood that the temperature averaging plate 113 and the side beam body 112 are flush with each other on the side surface facing the distribution box 2, so that the distance between the temperature averaging plate 113 and the side beam body 112 in the width direction (that is, the front-to-back direction) can be equal everywhere, so that the temperature averaging plate 113 can distribute the heat more evenly after absorbing the heat generated by the components in the distribution box 2, thereby improving the heat dissipation uniformity of the distribution box 2.

[0055] In addition, the temperature homogenizing plate 113 and the cooling channel 111 of the power distribution box are integrated into one by welding, and the welding method can be brazing or stir friction welding.

[0056] According to some optional embodiments of the present invention, combined with Figure 1 , Figure 3 and Figure 4 As shown, the cooling channel 111 of the distribution box includes a first channel 1111, and the first channel 1111 extends in a winding manner in the side beam 11. Specifically, the first channel 1111 can extend in an irregular bending or twisting trend, so that it can flexibly avoid and extend according to the arrangement positions of components in the distribution box 2, and can also make full use of the limited space in the distribution box 2 to increase the cooling path length of the first channel 1111, thereby improving the cooling and heat dissipation efficiency of the distribution box 2.

[0057] According to some optional embodiments of the present invention, combined with Figure 3 and Figure 4 As shown, the first flow channel 1111 includes a plurality of first flow segments 11111 and a plurality of second flow segments 11112, the plurality of first flow segments 11111 are arranged at intervals, and the plurality of first flow segments 11111 and the plurality of second flow segments 11112 are parallel to each other, a second flow segment 11112 is connected between the ends of two adjacent first flow segments 11111, and in the extension direction of the first flow segment 11111, two adjacent second flow segments 11112 are connected to the two ends of the same first flow segment 11111.

[0058] Among them, multiple first flow segments 11111 are arranged at intervals along the length direction of the side beam 11, and a second flow channel 1112 is bent and connected between the ends of two adjacent first flow segments 11111, so that the second flow segment 11112 can change the extension direction of the first flow segment 11111, and the multiple second flow segments 11112 are coordinated and connected with the multiple first flow segments 11111 to form a complete first flow channel 1111, so that the extension direction of the first flow segment 11111 is continuously changed by the multiple second flow segments 11112, and finally the first flow channel 1111 is constructed with a longer heat exchange cooling path and a wider heat exchange contact area within a limited length range in the distribution box 2, thereby effectively improving the heat exchange efficiency and heat exchange uniformity of the cooling medium.

[0059] In addition, the first flow segment 11111 extends in the vertical direction (i.e., the up and down direction), and two second flow segments 11112 adjacent to each other in the vertical direction can be connected at the upper and lower ends of the same first flow segment 11111 (but the two adjacent second flow segments 11112 are respectively located on both sides of the first flow segment 11111 in the lateral direction). In this way, a first flow channel 1111 that continuously changes direction and continuously extends in the vertical and lateral directions (i.e., the left and right directions) can be formed, thereby increasing the path length of the cooling flow path of the first flow channel 1111.

[0060] Specifically, combined Figure 1 , Figure 3 and Figure 4 As shown, the side beam 11 has a through hole, which corresponds to the position of the connector 24 of the distribution box 2 , and the first flow channel 1111 and the through hole are spaced apart in the length direction of the side beam 11 .

[0061] It can be understood that, along the width direction of the side beam 11 (that is, the front-to-back direction), the perforations on the side beam 11 correspond to the positions of the connectors 24 of the distribution box 2, so that it is convenient for the outer plug connector to be plugged into the connector 24 through the perforations, thereby realizing the electrical connection between the outside and the inside of the distribution box 2, thereby improving the rationality of its layout.

[0062] In addition, along the length direction of the side beam 11 (that is, the left and right direction), the first flow channel 1111 is spaced apart from the perforation, so as to avoid the first flow channel 1111 from causing structural interference with components that need to pass through the perforation; and because the perforation of the side beam 11 is connected to the outside, the temperature of the perforation is lower than that of the inside of the distribution box 2, so the first flow channel 1111 is mainly arranged in the area with higher temperature inside the distribution box 2, thereby improving the overall heat dissipation uniformity of the distribution box 2.

[0063] Furthermore, combined with Figure 3 and Figure 4As shown, the cooling channel 111 of the distribution box further includes a second channel 1112, which is connected to the first channel 1111, and extends along the length direction of the side beam 11, and the second channel 1112 and the perforation are spaced apart in the height direction of the side beam 11. In other words, one end of the second channel 1112 is connected to the first channel 1111, and the second channel 1112 extends along the length direction of the side beam 11, so that the cooling path length and cooling coverage of the cooling channel 111 of the distribution box can be further increased, thereby improving the cooling and heat dissipation efficiency of the distribution box 2 and the heat dissipation uniformity of the distribution box 2 along the length direction.

[0064] In addition, the second flow channel 1112 and the perforation are spaced apart in the height direction (that is, the up and down direction) of the side beam 11, so as to avoid the second flow channel 1112 from causing structural interference to components that need to pass through the perforation; and because the perforation of the side beam 11 is connected to the outside, the temperature of the perforation is lower than that of the inside of the distribution box 2, so the second flow channel 1112 is mainly arranged in the area with higher temperature inside the distribution box 2, thereby improving the overall heat dissipation uniformity of the distribution box 2.

[0065] According to some optional embodiments of the present invention, combined with Figure 3 and Figure 4 As shown, the distribution box cooling channel 111 has an inlet 1113 and an outlet 1114. In the length direction of the side beam 11, the inlet 1113 and the outlet 1114 are located on the same side of the distribution box cooling channel 111; or in the length direction of the side beam 11, the inlet 1113 and the outlet 1114 are located on opposite sides of the distribution box cooling channel 111.

[0066] In detail, the cooling medium can flow into the distribution box cooling channel 111 from the inlet 1113 and finally flow out of the distribution box cooling channel 111 from the outlet 1114, thereby facilitating the repeated circulation of the cooling medium in the distribution box cooling channel 111.

[0067] For example, along the length direction of the side beam 11, the inlet 1113 and the outlet 1114 of the distribution box cooling channel 111 are located on the same side of themselves, so that the cooling medium can finally flow back to the side of the outlet 1114, which is beneficial to balancing the temperature value of the distribution box 2 in the length direction and improving the temperature uniformity inside the distribution box 2.

[0068] For another example, along the length direction of the side beam 11, the inlet 1113 and the outlet 1114 are respectively located on opposite sides of the cooling channel 111 of the distribution box, so that the cooling medium flows out directly from the inlet 1113 on one side of the length direction of the distribution box 2 and finally flows out from the outlet 1114 on the other side of the length direction of the distribution box 2. In this way, the structural layout of the cooling channel 111 of the distribution box can be simplified.

[0069] Specifically, combined Figure 3 and Figure 4 As shown, the inlet 1113 extends along the width direction of the side beam 11; and / or the outlet 1114 extends along the length direction of the side beam 11. It can be understood that the inlet 1113 extends along the front-to-back direction, so that the inlet 1113 is connected with the flow path behind it, so that the cooling medium flows from the rear side through the inlet 1113 of the cooling channel 111 of the distribution box; and it is also convenient to arrange the flow path connected with the inlet 1113 on the side of the side beam 11 facing the battery cell, so as to avoid the flow path being exposed outside the distribution box 2, thereby improving the protection and reasonable arrangement.

[0070] In addition, the outlet 1114 extends in the left-right direction, so that the outlet 1114 can directly pass through the side wall of the distribution box 2 in the length direction, thereby simplifying the extension path of the cooling channel 111 of the distribution box, simplifying the manufacturing process, and improving manufacturing efficiency.

[0071] Combination Figure 1 and Figure 2 As shown, the frame 1 according to the embodiment of the second aspect of the utility model includes the side beam 11 of the battery pack 100 of the above embodiment. Among them, the side beam 11 can be a front side beam, a rear side beam, a left side beam and a right side beam, but is not limited thereto. In other words, the frame 1 with the above side beam 11 can set the distribution box cooling channel 111 in the side beam 11 close to the distribution box 2 without changing its own overall structural frame, so that the cooling and heat dissipation effect of the distribution box 2 and the integration effect of the entire battery pack 100 can be taken into account, thereby improving its rationality and practicality.

[0072] Combination Figure 1 As shown, the battery pack 100 according to the embodiment of the third aspect of the utility model includes the frame 1 and the distribution box 2 of the above-mentioned embodiment, and the distribution box 2 is arranged on the side beam 11. Such an arrangement can effectively improve the cooling and heat dissipation effect of the distribution box 2 without changing the overall structure of the battery pack 100 (that is, the distribution box cooling channel 111 is integrated on the side beam 11), reduce the local temperature difference of the battery pack 100 during charging and distribution, and ensure that the temperature of the entire battery pack 100 is within a normal range during the charging and distribution process, thereby improving the driving safety of the vehicle.

[0073] Specifically, combined Figure 2-Figure 4 As shown, the power distribution box 2 includes a box body 21, an electric control module 22 and a compressor control module 23. The box body 21 is arranged on the side beam 11, the electric control module 22 is arranged in the box body 21, the compressor control module 23 is arranged in the box body 21, and the compressor control module 23 is electrically connected to the electric control module 22. Among them, the electric control module 22 is used for the distribution and management of high voltage electricity.

[0074] It is understandable that the box body 21 mainly serves to protect the internal structure. The electric control module 22 can detect whether the power supply is stable and make adaptive adjustments as needed to ensure that the voltage and current are within an appropriate range; it can also match the input and output of the power supply to maximize the energy efficiency; it can also use various algorithms to monitor, detect and predict the operating status of the equipment, thereby improving the safety of the device.

[0075] In addition, the compressor control module 23 is the main control chip responsible for managing and controlling the operation of the compressor. It can adjust the compressor's speed, cooling, startup and other parameters to achieve efficient and stable operation of the compressor. The compressor control module 23 can ensure that the compressor operates in the best working state by controlling the compressor's start and stop, speed, running time and other parameters; when the compressor control module 23 is in operation, if the compressor fails or has an abnormal condition, the control module will immediately take corresponding adjustment measures to avoid affecting its normal operation, thereby protecting the compressor; the compressor control module 23 can achieve efficient use of energy, reduce energy consumption, and improve refrigeration performance by controlling the compressor's operating parameters, thereby achieving efficient operation of the refrigeration system.

[0076] Furthermore, the compressor control module 23 includes a compressor controller and a fuse, which are respectively connected to the compressor controller and the electric control module 22. The compressor controller and the fuse are used together to control the working state of the compressor and ensure the circuit safety of the compressor module 23.

[0077] That is, the insurance is connected to the compressor controller and the electric control module 22 in the form of electrical signals, so that the response speed and accuracy of the insurance can be improved. In addition, the insurance is a safety device that can be used to detect, protect and cut off abnormal leakage in the circuit, which can effectively avoid electric shock accidents and fires.

[0078] Specifically, combined Figure 3 As shown, the distribution box 2 also includes a connector 24 and a compressor connector 25. The connector 24 is arranged on the box body 21, and the connector 24 is electrically connected to the electronic control module 22. The compressor connector 25 is arranged on the box body 21, and the compressor connector 25 is electrically connected to the compressor control module 23.

[0079] It can be understood that the distribution box 2 is provided with a plug connector 24, which can be used to plug and match with an external plug connector, so as to facilitate the transmission of electric energy or information. Among them, the plug connector 24 is connected to the electric control module 22 in the form of an electrical signal, and the plug connector 24 can serve as a connection medium between the electric control module 22 and external components, so that the electric control module 22 can establish an electrical connection relationship with external components according to needs; the compressor connector 25 is electrically connected to the compressor control module 23, and the compressor connector 25 can serve as a connection medium between the compressor module and external components, so that the compressor module can establish an electrical connection relationship with external components according to needs. In addition, the plug connector 24 and the compressor connector 25 are both arranged on the box body 21, so that the box body 21 can provide installation and fixing conditions for the plug connector 24 and the compressor connector 25.

[0080] In addition, the connector 24 is insulated with a ceramic or rubber sleeve to meet the requirements of anti-electric shock performance.

[0081] Furthermore, combined with Figure 2 As shown, the battery pack 100 also includes a bottom plate 26, which is arranged at the bottom of the frame 1. The bottom plate 26 forms a battery cell cooling channel, and the battery cell cooling channel is used for the flow of cooling medium for heat exchange with the battery cell. The battery cell cooling channel and the distribution box cooling channel 111 are independent of each other.

[0082] That is to say, a battery cell cooling channel for the circulation of cooling medium is provided on the bottom plate 26. The cooling medium in the battery cell cooling channel repeatedly circulates in the battery cell cooling channel to continuously exchange heat with the battery cell, thereby achieving a cooling and heat dissipation effect on the battery cell, which is beneficial to the temperature control of the battery pack 100, ensuring that the battery cell operates within a reasonable temperature range, and avoiding thermal runaway.

[0083] In addition, the battery cell cooling channel and the distribution box cooling channel 111 are independent of each other, that is, the battery cell and the distribution box 2 can be cooled independently. In this way, under the premise that the battery cell and the distribution box 2 do not interfere with each other's cooling work, the temperature difference of the entire battery pack 100 can be further reduced, avoiding the problem of large local temperature difference and poor heat dissipation effect in the battery pack 100.

[0084] In addition, combined Figure 1 and Figure 2As shown, the battery pack 100 also includes a seal 15, which is made of metal plates and composite materials by hot pressing, and is used for bearing the weight of the vehicle floor and sealing the battery pack 100; the maintenance cover 14 can be covered on the maintenance port, which is convenient for maintenance work when the high-voltage electrical device fails; the longitudinal beam 12 can enhance the structural strength of the battery pack and provide support for the top cover; the maintenance cover 14 and the top cover are sealed and fastened by sealing foam and bolts. The sealing foam is made by a foaming process, and its reasonable compression ratio is controlled, combined with the battery pack 100 and the vehicle connecting bolts, etc. to meet the sealing requirements of the vehicle; the tray 13 can also play a role in supporting the bottom of the battery cell.

[0085] The vehicle according to the fourth aspect of the embodiment of the utility model includes the battery pack 100 of the above embodiment. The vehicle with the battery pack 100 can effectively improve the cooling and heat dissipation effect of the distribution box 2 without changing the overall structure of the battery pack 100 (that is, integrating the distribution box cooling channel 111 on the side beam 11), reduce the local temperature difference of the battery pack 100 during charging and distribution, thereby improving the driving safety of the vehicle and further enhancing the market competitiveness of the vehicle.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0087] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 this application can be understood according to specific circumstances.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0089] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A side beam of a battery pack, characterized in that: The side beam is formed with a distribution box cooling flow channel, and the distribution box cooling flow channel is used for the flow of a cooling medium for heat exchange with the distribution box.

2. The side beam of the battery pack according to claim 1, characterized in that: The side beam has a first surface facing the distribution box and a second surface facing the battery core, and the distribution box cooling channel is adjacent to the first surface and away from the second surface.

3. The side beam of the battery pack according to claim 1, characterized in that: In the length direction of the side beam, the cooling channel of the distribution box is located at the center of the side beam.

4. The side beam of the battery pack according to claim 1, characterized in that: The side beam comprises: A side beam body, wherein the side beam body is formed with a cooling channel for the power distribution box; A temperature averaging plate is arranged on the side beam body and covers the cooling channel of the distribution box. The cooling medium in the cooling channel of the distribution box exchanges heat with the distribution box through the temperature averaging plate.

5. The side beam of the battery pack according to claim 4, characterized in that: The side beam body is an integral piece.

6. The side beam of the battery pack according to claim 4, characterized in that: A surface of one side of the temperature homogenizing plate facing the power distribution box is flush with a surface of one side of the side beam body facing the power distribution box.

7. The side beam of the battery pack according to claim 1, characterized in that: The cooling channel of the power distribution box comprises: A first flow channel is provided, wherein the first flow channel extends in a winding manner in the side beam.

8. The side beam of the battery pack according to claim 7, characterized in that: The first flow channel comprises: A plurality of first flow segments, wherein the plurality of first flow segments are arranged at intervals and parallel to each other; There are a plurality of second flow segments, one of the second flow segments is connected between the ends of two adjacent first flow segments, and in the extension direction of the first flow segment, two adjacent second flow segments are connected to the two ends of the same first flow segment.

9. The side beam of the battery pack according to claim 7, characterized in that: The side beam has a through hole, and the through hole corresponds to the position of the connector of the distribution box. The cooling channel of the distribution box and the through hole are arranged at intervals in the length direction of the side beam.

10. The side beam of the battery pack according to claim 9, characterized in that: The power distribution box cooling channel also includes: A second flow channel is communicated with the first flow channel, the second flow channel extends along the length direction of the side beam and is spaced apart from the through hole in the height direction of the side beam.

11. The side beam of the battery pack according to claim 1, characterized in that: The cooling channel of the distribution box has an inlet and an outlet, and in the length direction of the side beam, the inlet and the outlet are located on the same side of the cooling channel of the distribution box; or In the length direction of the side beam, the inlet and the outlet are respectively located on opposite sides of the cooling channel of the distribution box.

12. The side beam of the battery pack according to claim 11, characterized in that: The inlet extends along the width direction of the side beam; and / or The outlet extends along the length direction of the side beam.

13. A frame, characterized in that: include: The side beam of the battery pack according to any one of claims 1 to 12.

14. A battery pack, characterized in that: include: The frame according to claim 13; A distribution box is arranged on the frame.

15. The battery pack according to claim 14, characterized in that: The power distribution box comprises: A box body, wherein the box body is arranged on the side beam; An electric control module, the electric control module is arranged in the box body; A compressor control module is disposed in the box body and is electrically connected to the electric control module.

16. The battery pack according to claim 15, characterized in that: The compressor control module comprises: Compressor controller; A fuse is connected to the compressor controller and the electronic control module respectively.

17. The battery pack according to claim 15, characterized in that: The power distribution box also includes: A connector, which is disposed on the box body and is electrically connected to the electric control module; A compressor connector is disposed on the box body and is electrically connected to the compressor control module.

18. The battery pack according to claim 14, characterized in that: Also includes: A base plate is arranged at the bottom of the frame, and a battery cell cooling channel is formed on the base plate. The battery cell cooling channel is used for the flow of a cooling medium for heat exchange with the battery cell, and the battery cell cooling channel and the distribution box cooling channel are independent of each other.

19. A vehicle, characterized in that: include: The battery pack according to any one of claims 14 to 18.

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