Battery pack and vehicle

Abstract

The battery pack and the vehicle are provided by the present disclosure and relate to the technical field of batteries. The battery pack comprises a box body having a containing cavity; a plurality of battery modules arranged in the containing cavity, each battery module comprising a plurality of battery cells; and a plurality of heat exchange assemblies, each heat exchange assembly comprising a heat exchange pipeline and a heat exchange plate in communication with the heat exchange pipeline, the heat exchange pipeline comprising an input pipe and an output pipe, and the heat exchange plate being in communication with the input pipe and the output pipe respectively, one heat exchange assembly being used for heat exchange of one battery module, any battery module being capable of being charged or discharged individually, or at least part of the battery modules being capable of being connected in series to form a whole for charging or discharging. The safety can be improved.

Description

[0001] Cross-references

[0002] This disclosure claims priority to Chinese patent application No. 202422896025.6, filed on November 26, 2024, entitled "Battery Pack and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of battery technology, and more specifically, to a battery pack and a vehicle. Background Technology

[0004] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools. If existing batteries malfunction during use, it can cause these electronic devices to fail to operate properly.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] This disclosure provides a battery pack and a vehicle that can improve safety.

[0007] According to one aspect of this disclosure, a battery pack is provided, comprising: The enclosure has a receiving cavity; Multiple battery modules are disposed within the accommodating cavity, and each battery module includes multiple battery cells; Multiple heat exchange components are provided, each heat exchange component including a heat exchange pipe and a heat exchange plate connected to the heat exchange pipe. The heat exchange pipe includes an input pipe and an output pipe. The heat exchange plate is connected to the input pipe and the output pipe respectively. One heat exchange component is used to exchange heat with one battery module. Any battery module can be charged or discharged individually, or at least some of the battery modules can be connected in series as a whole for charging or discharging.

[0008] By adopting the above technical solutions, each battery module can operate independently; even if some battery modules malfunction and cannot supply power normally, other battery modules can still supply power normally, improving the safety of the battery pack. When the battery modules are operating, a heat exchange medium is introduced into the heat exchange pipes and flows into the heat exchange plates, allowing heat exchange to occur on the battery module corresponding to the heat exchange component. This enables one heat exchange component to heat one battery module individually, thereby adjusting the battery module to a suitable operating temperature based on its power supply status, further improving the safety of the battery pack. Furthermore, multiple battery modules can be connected in series as a whole for charging or discharging, which helps to improve the capacity and safety of the battery pack.

[0009] In one exemplary embodiment of this disclosure, the battery pack further includes at least one separator plate disposed within the receiving cavity and connected to the inner wall of the receiving cavity; adjacent battery modules are separated by two sides of the separator plate. The input pipe is located between the housing and the battery module, the output pipe is located on the isolation plate, the end of the heat exchange plate away from the isolation plate is connected to the input pipe, and the end of the heat exchange plate close to the isolation plate is connected to the output pipe.

[0010] By adopting the above technical solution, adjacent battery modules are separated by an isolation plate, thus isolating them and preventing mutual interference. Furthermore, by placing the input pipe between the housing and the battery modules, and the output pipe on the isolation plate, the heat exchange medium can flow through the input pipe through the heat exchange plate and finally out through the output pipe, facilitating heat exchange for the battery modules.

[0011] In one exemplary embodiment of this disclosure, the heat exchange plate is provided with a heat exchange channel, the heat exchange channel having an inlet and an outlet, the inlet communicating with the inlet pipe, the outlet communicating with the outlet pipe, and the heat exchange channel extending along a curved or broken line trajectory.

[0012] By adopting the above technical solution, the length of the heat exchange channel within the heat exchange plate can be increased, thereby enabling the heat exchange medium to fully exchange heat within the heat exchange channel and improving heat exchange efficiency.

[0013] In one exemplary embodiment of this disclosure, the housing includes a base plate and a frame disposed on the base plate, and the accommodating cavity is surrounded by the base plate and the frame; the input port is located on the side of the output port near the base plate.

[0014] By adopting the above technical solution, the inlet is set lower than the outlet, which allows the heat exchange medium to flow from bottom to top, reducing the flow velocity of the heat exchange medium and improving the heat exchange efficiency.

[0015] In one exemplary embodiment of this disclosure, the heat exchange pipe includes an inlet pipe and an outlet pipe; the inlet pipe and the outlet pipe, which communicate with at least a portion of the heat exchange assembly, are located between the housing and the battery module.

[0016] By adopting the above technical solution, the input pipe and the output pipe are located at the same end of the heat exchange plate, so that the output pipe is separated from the isolation plate. Therefore, no hole for installing the output pipe is provided in the isolation plate, thereby improving the structural strength of the isolation plate.

[0017] In one exemplary embodiment of this disclosure, the heat exchange plate is provided with a heat exchange channel, the heat exchange channel having an inlet and an outlet, and the inlet and the outlet are located at the end of the heat exchange plate away from the isolation plate; the inlet is connected to the inlet pipe, and the outlet is connected to the outlet pipe.

[0018] By adopting the above technical solution, the inlet and outlet are located at the end of the heat exchange plate away from the isolation plate, eliminating the need to open up both ends of the heat exchange plate, which helps to reduce the process difficulty of the heat exchange plate.

[0019] In one exemplary embodiment of this disclosure, there are multiple heat exchange channels within the same heat exchange plate, and multiple input pipes and output pipes connected to the same heat exchange plate.

[0020] By adopting the above technical solution and setting up multiple heat exchange channels and multiple heat exchange pipes, it is beneficial to improve heat exchange efficiency.

[0021] In one exemplary embodiment of this disclosure, there is a gap between the isolation plate and the heat exchange plate.

[0022] By adopting the above technical solution, the heat exchange plate and the isolation plate do not come into contact, which can reduce the temperature interference between two adjacent battery modules and improve the reliability of the battery pack.

[0023] In one exemplary embodiment of this disclosure, the heat exchange pipe further includes a connecting pipe communicating with the input pipe; the connecting pipes of two adjacent heat exchange components are connected. At least a portion of the heat exchange components have a first control valve on their connecting pipes; at least a portion of the heat exchange components have a second control valve on their input pipes; the first control valve and the second control valve can be opened or closed to allow adjacent heat exchange components to be connected in series or in parallel.

[0024] By adopting the above technical solution, during prolonged discharge of each battery module, opening the first control valve and closing the second control valve connects multiple connecting pipes. A single input pipe supplies heat exchange medium to the heat exchange plates of multiple heat exchange components, reducing temperature differences between the battery modules and thus improving the battery pack's lifespan and safety. During charging, each battery module has the same charging voltage and generates significant heat. Opening the second control valve and closing the first control valve disconnects multiple connecting pipes, allowing multiple heat exchange components to exchange heat independently. By using the heat exchange components corresponding to each battery module, the temperature of each battery module can be effectively adjusted, further improving the battery pack's lifespan and safety.

[0025] In one exemplary embodiment of this disclosure, the isolation plate is sealed to the housing.

[0026] By adopting the above technical solution, two adjacent battery modules can be separated by an isolation plate, thereby isolating the adjacent battery modules and preventing them from affecting each other.

[0027] In one exemplary embodiment of this disclosure, the housing has a first mounting hole and a second mounting hole on the same side, the input pipe passes through the first mounting hole, and the output pipe passes through the second mounting hole.

[0028] By adopting the above technical solution, and by setting the first mounting hole and the second mounting hole on the same side of the housing, the path of the heat exchange medium can be increased, which is beneficial to improving the heat exchange efficiency.

[0029] According to one aspect of this disclosure, a vehicle is provided, including the battery pack described in any of the foregoing.

[0030] By adopting the above technical solutions, each battery module of the vehicle can operate independently; when some battery modules malfunction and cannot supply power normally, other battery modules can still supply power normally, improving vehicle safety. During battery module operation, a heat exchange medium is introduced into the heat exchange pipes and flows into the heat exchange plates, allowing heat exchange to occur on the battery module corresponding to the heat exchange component. This enables one heat exchange component to heat one battery module individually, thereby adjusting the battery module to a suitable operating temperature based on its power supply status, further improving vehicle safety. Furthermore, multiple battery modules can be connected in series as a whole for charging or discharging, which also contributes to improved vehicle safety.

[0031] According to one aspect of this disclosure, a vehicle is provided, including a battery pack and a battery management circuit; wherein the battery pack includes: The enclosure has a receiving cavity; Multiple battery modules are disposed within the accommodating cavity, and each battery module includes multiple battery cells; Multiple heat exchange components are provided, each heat exchange component including a heat exchange pipe and a heat exchange plate communicating with the heat exchange pipe. The heat exchange pipe includes an input pipe, an output pipe and a connecting pipe communicating with the input pipe. The heat exchange plate is communicating with the input pipe and the output pipe respectively. One heat exchange component is used to exchange heat with one battery module. Any battery module can be charged or discharged individually, or at least some of the battery modules can be connected in series as a whole for charging or discharging.

[0032] By adopting the above technical solution, the battery management circuit can control the series or parallel connection of multiple heat exchange components, so that the vehicle can select the best battery module heat exchange method under different conditions.

[0033] In one exemplary embodiment of this disclosure, the connecting pipes of two adjacent heat exchange components are connected; a first control valve is provided on the connecting pipes of at least a portion of the heat exchange components; and a second control valve is provided on the input pipes of at least a portion of the heat exchange components. The battery management circuit is configured to open the first control valve and close the second control valve in response to a first adjustment signal; and to open the second control valve and close the first control valve in response to a second adjustment signal; and to close the first control valve and the second control valve in response to a third adjustment signal.

[0034] By adopting the above technical solution, the battery management circuit can control the series or parallel connection of multiple heat exchange components by controlling the opening or closing of the first control valve and the second control valve, so that the vehicle can select the best battery module heat exchange method under different conditions and improve vehicle safety.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0037] Figure 1 This is an overall structural diagram of the battery pack according to the first embodiment.

[0038] Figure 2 This is an exploded view of the battery pack in the first embodiment.

[0039] Figure 3 This is a schematic diagram of the battery pack structure after the cover is removed in the first embodiment.

[0040] Figure 4 This is a schematic diagram of the structure of the heat exchange component and the isolation plate in the first embodiment.

[0041] Figure 5 This is a schematic diagram of the isolation plate in the first embodiment.

[0042] Figure 6 This is a schematic diagram of the heat exchange plate in the first embodiment.

[0043] Figure 7 This is an overall structural diagram of the battery pack according to the second embodiment.

[0044] Figure 8 This is an exploded view of the battery pack in the second embodiment.

[0045] Figure 9 This is a schematic diagram of the battery pack structure after the cover is removed in the second embodiment.

[0046] Figure 10 This is a schematic diagram of the heat exchange component in the second embodiment.

[0047] Figure 11 This is a schematic diagram of the heat exchange plate in the second embodiment.

[0048] Figure 12 This is a circuit diagram of a vehicle according to an embodiment of the present disclosure.

[0049] Explanation of reference numerals in the attached figures: 1. Housing; 101. Receptacle; 11. Base plate; 12. Frame; 121. First mounting hole; 122. Second mounting hole; 13. Cover; 14. Support plate; 2. Battery module; 21. Battery cell; 3. Isolation plate; 4. Heat exchange assembly; 41. Heat exchange plate; 411. Heat exchange channel; 412. Inlet; 413. Outlet; 42. Inlet pipe; 43. Outlet pipe; 44. Connecting pipe; 45. First control valve; 46. Second control valve; PACK; BMS; PMC; JC; EC; TSM; SDM; FDM; Detailed Implementation

[0050] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0051] This disclosure provides a battery pack (PACK). For example... Figures 1-4 , Figures 8-10 As shown, the battery pack may include a housing 1, a battery module 2, an isolation plate 3, and a heat exchange assembly 4, wherein: The housing 1 has a receiving cavity 101. There are multiple battery modules 2, that is, two or more, each battery module 2 is disposed in the receiving cavity 101, and each battery module 2 includes multiple battery cells 21 arranged at intervals, and the gap between the battery cells 21 of a battery module 2 is the cell gap of the battery module 2.

[0052] The isolation plate 3 can be disposed in the accommodating cavity 101 and connected to the inner wall of the accommodating cavity 101; two adjacent battery modules 2 can be separated on both sides of an isolation plate 3.

[0053] There are multiple heat exchange components 4, each corresponding to one of the multiple battery modules 2. Each heat exchange component 4 is used to exchange heat with its corresponding battery module 2. For example, a heat exchange component 4 can perform cooling, heating, or other heat exchange on the corresponding battery module 2 so that the corresponding battery module 2 can operate at a suitable temperature.

[0054] Each heat exchange assembly 4 includes a heat exchange pipe and a heat exchange plate 41 connected to the heat exchange pipe. The heat exchange plate 41 of the same heat exchange assembly 4 is disposed within the individual gap of the same battery module 2. The heat exchange pipe includes an input pipe 42 and an output pipe 43. The heat exchange plate 41 is connected to the input pipe 42 and the output pipe 43 respectively. One heat exchange assembly 4 is used to exchange heat for one battery module 2. Any battery module 2 can be charged or discharged individually to achieve a parallel connection between the battery modules 2. Some or all of the battery modules 2 can be connected in series to form a whole for charging or discharging. In one example, some of the battery modules 2 can be connected in series to form a whole for charging or discharging to achieve a series connection between some of the battery modules 2. In another example, all of the battery modules 2 can be connected in series to form a whole for charging or discharging to achieve a series connection between all of the battery modules 2. At least a portion of the heat exchange pipe is disposed between the housing 1 and the battery module 2. For example, there are three battery modules 2 and three heat exchange components 4. The three battery modules 2 are distributed along the first direction, and the three heat exchange components 4 are distributed along the first direction. The three battery modules 2 are isolated by two isolation plates 3. The heat exchange pipe of the heat exchange component 4 corresponding to the middle battery module 2 can be set between the isolation plate 3 and the battery module 2.

[0055] In this way, each battery module 2 can operate independently; even if some battery modules 2 malfunction and cannot supply power normally, other battery modules 2 can still supply power normally, which can improve the safety of the battery pack and the vehicle using the battery pack. At the same time, the isolation plate 3 can isolate two adjacent battery modules 2 to prevent mutual interference between them. When the battery module 2 is working, a heat exchange medium is introduced into the heat exchange pipe. The heat exchange medium flows from the input pipe 42 into the heat exchange plate 41 and flows out from the output pipe 43, which can exchange heat with the battery module 2 corresponding to the heat exchange assembly 4. This allows the battery module 2 to be adjusted to a suitable operating temperature according to the power supply status of the battery module 2, further improving the safety of the battery pack. The heat exchange medium can be a fluid medium such as coolant or cooling gas. In addition, by placing part of the heat exchange pipe between the housing 1 and the battery module 2, the space inside the housing 1 can be fully utilized to improve space utilization.

[0056] The following is a detailed description of each part of the battery pack: like Figure 2 , Figure 3 , Figure 8 , Figure 9 As shown, the accommodating cavity 101 is the internal space of the housing 1, used to accommodate the battery module 2. In some embodiments of this disclosure, the housing 1 may include a base plate 11 and a frame 12 disposed on the base plate 11, wherein: The frame 12 can be a polygonal structure formed by multiple side plates. For example, the frame 12 may include four side plates, which can form a rectangular frame 12. The frame 12 can be placed on the base plate 11 and can be connected to the base plate 11 by means of adhesive, welding, or using screws or other connectors. The receiving cavity 101 is located within the space enclosed by the frame 12 and the base plate 11.

[0057] In addition, such as Figure 1 and Figure 2 As shown, the box body 1 may also include a box cover 13, which can cover the side of the frame 12 away from the bottom plate 11, thereby forming an accommodating space together with the frame 12 and the bottom plate 11.

[0058] Furthermore, in order to increase the accommodating space, at least a portion of the base plate 11 and the lid 13 may be raised in a direction away from the frame 12.

[0059] like Figure 2 , Figure 3 As shown, there are two or more battery modules 2, and each battery module 2 is disposed within the receiving cavity 101 of the housing 1. The battery modules 2 can be spaced apart along the first direction Y. One battery module 2 may include multiple interconnected battery cells 21, and the battery cells 21 of the same battery module 2 can be distributed along the second direction X. The battery cells 21 of the same battery module 2 can be connected in series or in association. The first direction Y and the second direction X intersect; for example, the first direction Y and the second direction X are perpendicular.

[0060] Different battery modules 2 can be independent components, meaning they can be connected in parallel. If one battery module fails, the others can still provide power. Alternatively, battery modules 2 can be connected in series to increase the output voltage. To facilitate control of the battery modules 2, the connection method between them can be controlled via a control circuit; the specific configuration of the control circuit is not limited here.

[0061] At least one isolation plate 3 can be disposed in the accommodating cavity 101 and connected to the inner wall of the accommodating cavity 101, thereby dividing the accommodating cavity 101 into multiple spaces. Each battery module 2 can be disposed in each space in a corresponding manner, so that two adjacent battery modules 2 are separated by an isolation plate 3 and do not interfere with each other. When a battery module 2 on one side of the isolation plate 3 has problems such as overheating, it can avoid affecting the battery module 2 on the other side.

[0062] In some embodiments of this disclosure, the separator 3 has a gap with the adjacent battery module 2 and is not in direct contact with it. This gap may be filled with foam or other insulating filler material. The separator 3 may be made of an insulating and thermally conductive material; however, the use of conductive materials such as metal is not excluded.

[0063] like Figure 2 and Figure 8 As shown, in some embodiments of this disclosure, the housing 1 may further include a support plate 14, which may be disposed within the accommodating cavity 101 and located between the battery module 2 and the bottom plate 11 of the housing 1, with each battery module 2 located within the boundary of the support plate 14. The surface of the separator 3 near the bottom plate 11 may contact the support plate 14 and may be connected by adhesive or other means.

[0064] In some embodiments of this disclosure, the separator 3 and the housing 1 can be sealed together. For example, the separator 3 can be bonded to the frame 12, the support plate 14, and the cover 13 using expanding foam or other adhesives to achieve a sealed connection. In addition, the height of the separator 3 in the direction perpendicular to the base plate 11 can be less than the height of the battery module 2 in the same direction. The cover 13 can be provided with a sealing part corresponding to the position of the separator 3. When the cover 13 is fastened to the frame 12, the sealing part abuts against the separator 3. At the same time, the sealing part can be sealed to the separator 3 using expanding foam or other adhesives. Of course, the sealing part can also be omitted, and the separator 3 can be directly bonded to the cover 13 using expanding foam or other adhesives.

[0065] In some embodiments of this disclosure, the battery pack may further include an insulating filler that can be filled between the battery module 2 and the inner wall of the accommodating cavity 101 to limit the position of the battery module 2. The insulating filler may be made of foam or other insulating materials.

[0066] In one embodiment of this disclosure, such as Figure 4 As shown, the number of heat exchange plates 41 in the same heat exchange component 4 can be multiple, for example, two, five, ten, etc. The multiple heat exchange plates 41 are evenly distributed along the second direction, with each heat exchange plate 41 located between individual unit gaps. The heat exchange plates 41 can be made of aluminum profiles, which have good thermal conductivity and improve heat exchange efficiency.

[0067] In one embodiment of this disclosure, such as Figures 2-4 As shown, the heat exchange pipe includes an inlet pipe 42 and an outlet pipe 43. A gap is provided between the frame 12 and the battery module 2. The inlet pipe 42 can be disposed in the gap between the frame 12 and the battery module 2. The outlet pipe 43 is disposed on the isolation plate 3. The end of the heat exchange plate 41 furthest from the isolation plate 3 is connected to the inlet pipe 42, and the end of the heat exchange plate 41 closest to the isolation plate 3 is connected to the outlet pipe 43. Thus, by placing the inlet pipe 42 between the frame 12 and the battery module 2, and the outlet pipe 43 on the isolation plate 3, the heat exchange medium can flow through the inlet pipe 42, through the heat exchange plate 41, and finally out through the outlet pipe 43, facilitating heat exchange for the battery module 2.

[0068] In one embodiment of this disclosure, see Figure 2 and Figure 8The frame 12 of the housing 1 has a first mounting hole 121 and a second mounting hole 122 on the same side. The input pipe 42 passes through the first mounting hole 121, and the output pipe 43 passes through the second mounting hole 122. In one example, there are two first mounting holes 121 and two mounting holes 122. The two first mounting holes 121 are spaced apart along the second direction X, and the two second mounting holes 122 are located between the two first mounting holes 121. The two second mounting holes 122 are spaced apart along a direction perpendicular to the plane formed by the first direction Y and the second direction X. In another example, there are two first mounting holes 121 and two mounting holes 122. The two first mounting holes 121 are spaced apart along the second direction X, and the two second mounting holes 122 are spaced apart along the second direction X. The first mounting holes 121 and the two mounting holes 122 are spaced apart along a direction perpendicular to the plane formed by the first direction Y and the second direction X.

[0069] In one embodiment of this disclosure, such as Figures 3-5 As shown, the output pipe 43 can be located inside the isolation plate 3. The end of the heat exchange plate 41 away from the input pipe 42 is connected to the isolation plate 3 to facilitate the connection between the heat exchange plate 41 and the output pipe 43. This helps to reduce the space occupied by the output pipe 43 in the accommodating cavity 101 and improve the space utilization rate. In addition, the isolation plate 3 can play a good supporting role and improve the structural stability of the battery pack PACK.

[0070] In one embodiment of this disclosure, such as Figures 2-4 As shown, the output pipes 43 of two adjacent heat exchange components 4 can be independently installed in the same isolation plate 3, and the two output pipes 43 are located in a plane parallel to the plane where the isolation plate 3 is located.

[0071] In one embodiment of this disclosure, the output tube 43 can be a channel within the isolation plate 3 to improve the installation efficiency of the battery pack.

[0072] In one embodiment of this disclosure, the output pipe 43 can be disposed on the side wall of the separator 3 along the first direction. No holes for installing the output pipe 43 are provided inside the separator 3, meaning the separator 3 can be a solid plate. This improves the structural strength of the separator 3 and further enhances the structural stability of the battery pack. The separator 3 can be made of high-strength materials such as composite materials, high-strength steel, or aluminum alloy.

[0073] In one embodiment of this disclosure, such as Figure 4 , Figure 10 As shown, the heat exchange plate 41 has a mounting part at the end away from the isolation plate 3, and the mounting part has mounting holes. In the same heat exchange assembly 4, the inlet pipe 42 passes through each mounting hole and is mounted on the mounting part to facilitate the connection between the inlet pipe 42 and the heat exchange plate 41.

[0074] In one embodiment of this disclosure, such as Figure 6 As shown, a heat exchange channel 411 is provided within the heat exchange plate 41. The heat exchange channel 411 has an inlet 412 and an outlet 413. The inlet 412 is connected to the inlet pipe 42, and the outlet 413 is connected to the outlet pipe 43. The heat exchange channel 411 extends along a curved or zigzag trajectory. For example, the heat exchange channel 411 can extend along an S-shaped curve, a spiral curve, or a zigzag trajectory to increase the length of the heat exchange channel 411 within the heat exchange plate 41, thereby ensuring sufficient heat exchange of the heat exchange medium within the heat exchange channel 411 and improving heat exchange efficiency.

[0075] In one embodiment of this disclosure, such as Figure 6 As shown, the heat exchange channel 411 is divided into a first horizontal section, a first vertical section, a second horizontal section, a second vertical section, and a third horizontal section along the flow direction of the heat exchange medium; the three horizontal sections and the two vertical sections are connected to form an S-shaped curve trajectory. The inlet 412 is located at the end of the first horizontal section away from the first vertical section, and the outlet 413 is located at the end of the third horizontal section away from the second vertical section. The inlet 412 and the outlet 413 are located at opposite ends of the heat exchange plate 41.

[0076] In one embodiment of this disclosure, the housing 1 includes a base plate 11 and a frame 12 disposed on the base plate 11, and the accommodating cavity 101 is surrounded by the base plate 11 and the frame 12; the inlet 412 is located on the side of the outlet 413 near the base plate 11, that is, the inlet 412 is set lower than the outlet 413, so that the heat exchange medium can fully exchange heat in the heat exchange channel 411.

[0077] In one embodiment of this disclosure, such as Figures 7-10 As shown, the heat exchange pipe includes an inlet pipe 42 and an outlet pipe 43; the inlet pipe 42 and the outlet pipe 43, which communicate with at least a portion of the heat exchange assembly 4, are located between the housing 1 and the battery module 2; specifically, the inlet pipe 42 and the outlet pipe 43, which communicate with at least a portion of the heat exchange assembly 4, are located between the frame 12 and the battery module 2. Thus, by placing the inlet pipe 42 and the outlet pipe 43 at the same end of the heat exchange plate 41, the outlet pipe 43 is separated from the isolation plate 3, thereby eliminating the need for a hole in the isolation plate 3 to install the outlet pipe 43, thereby improving the structural strength of the isolation plate 3.

[0078] In one embodiment of this disclosure, there are three battery modules 2 and three heat exchange components 4. The three battery modules 2 are distributed along the first direction, and the three heat exchange components 4 are distributed along the first direction. The three battery modules 2 are isolated by two isolation plates 3. The input pipe 42 and output pipe 43 corresponding to the middle battery module 2 can be disposed between the isolation plate 3 and the battery module 2.

[0079] In one embodiment of this disclosure, the orthographic projection of the input tube 42 on the base plate 11 and the orthographic projection of the output tube 43 on the base plate 11 at least partially overlap.

[0080] In one embodiment of this disclosure, such as Figure 9 , Figure 10 , Figure 11 As shown, the heat exchange plate 41 has a heat exchange channel 411, which has an inlet 412 and an outlet 413. The inlet 412 and the outlet 413 are located at the end of the heat exchange plate 41 away from the isolation plate 3. The inlet 412 is connected to the inlet pipe 42, and the outlet 413 is connected to the outlet pipe 43. In this way, by placing the inlet 412 and the outlet 413 at the end of the heat exchange plate 41 away from the isolation plate 3, it is not necessary to open up both ends of the heat exchange plate 41, which helps to reduce the manufacturing difficulty of the heat exchange plate 41.

[0081] In one embodiment of this disclosure, there are multiple heat exchange channels 411 within the same heat exchange plate 41, and multiple inlet pipes 42 and outlet pipes 43 communicating with the same heat exchange plate 41. For example, a heat exchange plate 41 may have two heat exchange channels 411, and there may be two inlet pipes 42 and two outlet pipes 43 communicating with the same heat exchange plate 41. The inlet 412 of one heat exchange channel 411 may be connected to one inlet pipe 42, and the outlet 413 may be connected to one outlet pipe 43. Similarly, the inlet 412 of another heat exchange channel 411 may be connected to another inlet pipe 42, and the outlet 413 may be connected to another outlet pipe 43. In other embodiments of this disclosure, there are multiple heat exchange channels 411 within the same heat exchange plate 41, and only one inlet pipe 42 and one outlet pipe 43 communicating with the same heat exchange plate 41.

[0082] In one embodiment of this disclosure, such as Figure 8 , Figure 11 As shown, there can be two heat exchange channels 411. Each heat exchange channel 411 extends along a U-shaped curve along the length of the heat exchange plate 41. In other words, each heat exchange channel 411 can be divided into a first straight section, a vertical section, and a second straight section along the flow direction of the heat exchange medium. The first straight section has an inlet 412 at the end away from the vertical section, and the second straight section has an outlet 413 at the end away from the vertical section. The inlet 412 and the outlet 413 are located at the same end of the heat exchange plate 41. The orthographic projections of the two first straight sections on the base plate 11 overlap, the orthographic projections of the two second straight sections on the base plate 11 overlap, and the orthographic projections of the two vertical sections on the base plate 11 do not overlap; in other words, one heat exchange channel 411 covers another heat exchange channel 411. Thus, by setting multiple heat exchange channels 411 and multiple heat exchange pipes, the heat exchange efficiency can be improved.

[0083] In one embodiment of this disclosure, there is a gap between the isolation plate 3 and the heat exchange plate 41. This prevents the heat exchange plate 41 from contacting the isolation plate 3, reducing temperature interference between adjacent battery modules 2.

[0084] When multiple battery modules 2 are in operation, heat exchange components 4 corresponding to each battery module 2 are used for heat exchange. However, each heat exchange component 4 is independent of the others. When each battery module 2 is discharged for a long time, the temperature difference between the multiple battery modules 2 can easily become large, thereby affecting the service life and safety of the battery pack PACK.

[0085] Therefore, in one embodiment of this disclosure, such as Figure 3 , Figure 4 , Figure 9 , Figure 10 As shown, the heat exchange pipeline also includes a connecting pipe 44 connected to the inlet pipe 42; the connecting pipes 44 of two adjacent heat exchange components 4 are connected; at least some of the connecting pipes 44 of the heat exchange components 4 are provided with a first control valve 45; for example, when there are two heat exchange components 4, a first control valve 45 can be provided on both connecting pipes 44, or a first control valve 45 can be provided on one of the connecting pipes 44. As another example, when there are three heat exchange components 4, a first control valve 45 can be provided on all three connecting pipes 44, or a first control valve 45 can be provided on one of the connecting pipes 44, or a first control valve 45 can be provided on two of the connecting pipes 44.

[0086] At least some of the heat exchange components 4 have a second control valve 46 on their inlet pipes 42. For example, when there are two heat exchange components 4, a second control valve 46 can be provided on both inlet pipes 42, or on one of the inlet pipes 42. As another example, when there are three heat exchange components 4, a second control valve 46 can be provided on all three inlet pipes 42, or on one of the inlet pipes 42, or on two of the inlet pipes 42. The first control valve 45 and the second control valve 46 can be opened or closed to allow adjacent heat exchange components 4 to be connected in series or in parallel.

[0087] Thus, during prolonged discharge of each battery module 2, by opening the first control valve 45 and closing the second control valve 46, multiple connecting pipes 44 are connected. A heat exchange medium can be supplied to the heat exchange plates 41 of multiple heat exchange components 4 through an input pipe 42, reducing the temperature difference between the multiple battery modules 2 and thereby improving the lifespan and safety of the battery pack. During charging of each battery module 2, the charging voltage of each battery module 2 is the same, resulting in significant heat generation. By opening the second control valve 46 and closing the first control valve 45, multiple connecting pipes 44 are disconnected, allowing multiple heat exchange components 4 to exchange heat independently. Through heat exchange with the heat exchange component 4 corresponding to each battery module 2, the temperature of each battery module 2 can be effectively adjusted, thereby improving the lifespan and safety of the battery pack.

[0088] This disclosure also provides a vehicle that may include the battery pack of any of the above embodiments. This vehicle possesses all the beneficial effects of the aforementioned battery pack. The vehicle may be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles may be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc. This application does not impose any special limitations on the aforementioned vehicles.

[0089] In one embodiment of this disclosure, such as Figures 1-4 , Figure 12 As shown, the vehicle also includes a battery management system (BMS), a temperature sensing module (TSM), a vehicle speed detection module (SDM), and a fault detection module (FDM).

[0090] The temperature sensing module (TSM) is used to detect the temperature of the battery pack and send the temperature signal value to the battery management circuit (BMS).

[0091] The vehicle speed detection module (SDM) is used to detect vehicle speed and send the vehicle speed signal value to the battery management circuit (BMS).

[0092] The Fault Detection Module (FDM) is used to detect whether the battery pack (PACK) has a fault and to send the fault signal to the Battery Management System (BMS).

[0093] The battery management circuit (BMS) includes a judgment circuit (JC), a voltage measurement circuit (PMC), and an execution circuit (EC). The voltage measurement circuit (PMC) detects a first voltage and a second voltage, and sends these two voltages to the judgment circuit (JC). The first voltage is the maximum voltage of the charging station, and the second voltage is the voltage of the battery pack (PACK).

[0094] The judgment circuit JC receives temperature signal values, vehicle speed signal values, fault signals, a first voltage, and a second voltage. The judgment circuit JC is configured to send a first adjustment signal to the execution circuit EC when the vehicle speed signal value is less than a preset vehicle speed and the temperature signal value is less than a preset temperature; the judgment circuit JC is also configured to send a second adjustment signal to the execution circuit EC when the first voltage is greater than the second voltage and the temperature signal value is greater than the preset temperature; the judgment circuit JC is further configured to send a third adjustment signal to the execution circuit EC in response to a fault signal.

[0095] The execution circuit EC is used to open the first control valve 45 and close the second control valve 46 in response to a first adjustment signal; and to open the second control valve 46 and close the first control valve 45 in response to a second adjustment signal; and to close the first control valve 45 and the second control valve 46 in response to a third adjustment signal.

[0096] Thus, during long-term vehicle operation, the judgment circuit JC can send a first adjustment signal to the execution circuit EC, causing the battery pack PACK to open the first control valve 45 and close the second control valve 46, thereby connecting multiple connecting pipes 44. Through an input pipe 42, heat exchange medium can be supplied to the heat exchange plates 41 of multiple heat exchange components 4, reducing the temperature difference between multiple battery modules 2 and thus improving the service life and safety of the battery pack PACK. During vehicle charging, the judgment circuit JC can send a second adjustment signal to the execution circuit EC, causing the battery pack PACK to open the second control valve 46 and close the first control valve 45, thereby disconnecting multiple connecting pipes 44. This allows multiple heat exchange components 4 to exchange heat independently. By using the heat exchange components 4 corresponding to the battery modules 2 for heat exchange, the temperature of each battery module 2 can be effectively adjusted, thereby improving the service life and safety of the battery pack PACK. When a battery module 2 fails, the judgment circuit JC can send a third adjustment signal to the execution circuit EC to close the first control valve 45 and the second control valve 46 of the heat exchange component 4 corresponding to the faulty battery module 2 in the battery pack PACK, thereby stopping the heat exchange of the faulty battery module 2 and improving safety.

[0097] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A battery pack, characterized in that, include: The enclosure has a receiving cavity; Multiple battery modules are disposed within the accommodating cavity, and each battery module includes multiple battery cells; Multiple heat exchange components are provided, each heat exchange component including a heat exchange pipe and a heat exchange plate connected to the heat exchange pipe. The heat exchange pipe includes an input pipe and an output pipe. The heat exchange plate is connected to the input pipe and the output pipe respectively. One heat exchange component is used to exchange heat with one battery module. Any battery module can be charged or discharged individually, or at least some of the battery modules can be connected in series as a whole for charging or discharging.

2. The battery pack according to claim 1, characterized in that, The battery pack further includes at least one separator plate, which is disposed within the accommodating cavity and connected to the inner wall of the accommodating cavity; adjacent battery modules are separated by one separator plate on both sides. The input pipe is located between the housing and the battery module, the output pipe is located on the isolation plate, the end of the heat exchange plate away from the isolation plate is connected to the input pipe, and the end of the heat exchange plate close to the isolation plate is connected to the output pipe.

3. The battery pack according to claim 2, characterized in that, The heat exchange plate is provided with a heat exchange channel, which has an inlet and an outlet. The inlet is connected to the inlet pipe, and the outlet is connected to the outlet pipe. The heat exchange channel extends along a curved or broken line trajectory.

4. The battery pack according to claim 3, characterized in that, The enclosure includes a base plate and a frame disposed on the base plate, and the accommodating cavity is surrounded by the base plate and the frame; the input port is located on the side of the output port near the base plate.

5. The battery pack according to claim 2, characterized in that, An input pipe and an output pipe, which are in communication with at least a portion of the heat exchange components, are located between the housing and the battery module.

6. The battery pack according to claim 5, characterized in that, The heat exchange plate is provided with a heat exchange channel, which has an inlet and an outlet, and the inlet and the outlet are located at the end of the heat exchange plate away from the isolation plate; the inlet is connected to the inlet pipe, and the outlet is connected to the outlet pipe.

7. The battery pack according to claim 6, characterized in that, The number of heat exchange channels within the same heat exchange plate is multiple, and the number of input pipes and output pipes connected to the same heat exchange plate is multiple.

8. The battery pack according to claim 5, characterized in that, There is a gap between the isolation plate and the heat exchange plate.

9. The battery pack according to any one of claims 2 to 8, characterized in that, The heat exchange pipeline also includes a connecting pipe that communicates with the input pipe; the connecting pipes of two adjacent heat exchange components are connected. At least a portion of the heat exchange components have a first control valve on their connecting pipes; at least a portion of the heat exchange components have a second control valve on their input pipes; the first control valve and the second control valve can be opened or closed to allow adjacent heat exchange components to be connected in series or in parallel.

10. The battery pack according to claim 9, characterized in that, The isolation plate is sealed to the box body.

11. The battery pack according to any one of claims 1 to 8, characterized in that, The housing has a first mounting hole and a second mounting hole on the same side. The input pipe passes through the first mounting hole and the output pipe passes through the second mounting hole.

12. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 1 to 11.

13. A vehicle, characterized in that, Includes a battery pack and a battery management circuit; wherein the battery pack includes: The enclosure has a receiving cavity; Multiple battery modules are disposed within the accommodating cavity, and each battery module includes multiple battery cells; Multiple heat exchange components are provided, each heat exchange component including a heat exchange pipe and a heat exchange plate communicating with the heat exchange pipe. The heat exchange pipe includes an input pipe, an output pipe and a connecting pipe communicating with the input pipe. The heat exchange plate is communicating with the input pipe and the output pipe respectively. One heat exchange component is used to exchange heat with one battery module. Any battery module can be charged or discharged individually, or at least some of the battery modules can be connected in series as a whole for charging or discharging.

14. The vehicle according to claim 13, characterized in that, The connecting pipes of two adjacent heat exchange components are connected; at least a portion of the connecting pipes of the heat exchange components are provided with a first control valve; at least a portion of the input pipes of the heat exchange components are provided with a second control valve; The battery management circuit is configured to open the first control valve and close the second control valve in response to a first adjustment signal; and to open the second control valve and close the first control valve in response to a second adjustment signal; and to close the first control valve and the second control valve in response to a third adjustment signal.

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