Battery pack bracket assembly, battery pack component and electric vehicle

Abstract

The present invention discloses a battery pack bracket assembly, a battery pack component and an electric vehicle, wherein the battery pack bracket assembly comprises: a mounting frame, wherein the mounting frame is used to be fixed on the chassis of the vehicle, and the mounting frame is used to install the battery pack; a liquid cooling connector, wherein the liquid cooling connector is mounted on the mounting frame, wherein one end of the liquid cooling connector is used to communicate with the heat dissipation system of the vehicle, and the other end of the liquid cooling connector is used to be inserted into and communicate with the heat dissipation pipe of the battery pack. The battery pack component comprises a battery pack and the battery pack bracket assembly as described above, wherein the battery pack is detachably connected to the battery pack bracket assembly. The electric vehicle comprises the battery pack assembly as described above. The present invention can balance the temperature of the battery pack, improve the full capacity of the battery pack, and directly improve the performance indicators such as the limited use environment of the battery pack in the electric vehicle, the vehicle power performance, and the battery pack life.

Description

Technical Field

[0001] The invention relates to a battery pack bracket assembly, a battery pack component and an electric vehicle. Background Art

[0002] There are two main ways to obtain energy for electric vehicles: charging and battery replacement. Since battery replacement can achieve rapid energy replenishment, it reduces customers' waiting time and improves the utilization rate of battery replacement stations. In addition, batteries can be charged centrally at night to achieve "peak energy storage" of power load. At the same time, it improves the comprehensive utilization efficiency of power equipment and extends the service life of batteries, which has high promotion value and economic significance.

[0003] Since the battery pack needs to be replaced frequently, the battery packs used in swappable electric vehicles are usually cooled naturally, that is, the heat generated by the battery is transferred to the battery pack shell by the battery shell to achieve heat exchange and heat dissipation with the outside world; the battery pack needs to be heated by external equipment (heating module) in a low temperature environment to ensure the normal working temperature of the battery pack. However, as the battery specific energy gradually increases and the battery power increases, the battery heat increases and the battery charging and discharging capacity decreases, which directly affects the technical indicators such as battery performance and life. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art such as increased heat generation of the battery pack, reduced battery charging and discharging capacity, and direct impact on battery performance and life, and to provide a battery pack bracket assembly, a battery pack assembly and an electric vehicle.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A battery pack bracket assembly is characterized in that it includes:

[0007] A mounting frame, the mounting frame is used to be fixed on the chassis of the car, and the mounting frame is used to install the battery pack;

[0008] A liquid cooling connector is installed on the mounting frame, one end of the liquid cooling connector is used to be connected to the cooling system of the automobile, and the other end of the liquid cooling connector is used to be inserted into the cooling pipe of the battery pack and be connected to the cooling pipe of the battery pack.

[0009] In this solution, the above-mentioned structural form is adopted, and the cooling water in the heat dissipation system is brought into the heat dissipation pipe through the liquid cooling connector to achieve thermal balance, which can balance the temperature of the battery pack, improve the full capacity of the battery pack, and directly increase the service life of the battery pack.

[0010] Preferably, the liquid-cooled connector includes a mounting plate, a plurality of connector bodies and a plurality of elastic components, one end of each of the elastic components is connected to the mounting frame, the other ends of each of the elastic components is connected to the mounting plate, and each of the connector bodies is connected to the mounting plate and inserted into the mounting frame.

[0011] In this solution, the above-mentioned structural form is adopted to realize cyclic cooling of the battery pack through multiple plug-in bodies, effectively dissipate the heat of the battery pack, and improve the performance and service life of the battery pack.

[0012] In addition, the floating connection of multiple connector bodies is achieved through elastic components, which effectively avoids loose connections of the connector bodies, greatly enhances the stability of the liquid-cooled connector, effectively avoids leakage of the liquid-cooled connector, and further extends the service life of the liquid-cooled connector.

[0013] Preferably, the insertion direction of the connector body is the same as the elastic force direction of the elastic component.

[0014] In this solution, the above-mentioned structural form is adopted, so that the connector body can follow and adjust the position state when the plug is moved, which meets the precise insertion of the connector body and improves the stability of the liquid-cooled connector.

[0015] Preferably, a side wall of the mounting frame is provided with a through hole along the insertion direction of the connector body, and a first guide portion is provided in the mounting plate on a side facing the mounting frame, and the first guide portion is located in the through hole and slides in the through hole.

[0016] In this solution, the above-mentioned structural form is adopted, and the first guide part and the through hole can play a guiding role, ensuring that the liquid-cooled connector moves along the insertion direction, thereby improving the insertion accuracy of the liquid-cooled connector.

[0017] Preferably, the side wall of the mounting frame is provided with a plurality of guide holes along the insertion direction of the connector body, the plurality of elastic members each include a guide rod and a spring, the plurality of guide rods correspond one-to-one to the plurality of guide holes, and one end of the guide rod is connected to the mounting plate, the other end of the guide rod passes through the guide hole and slides in the guide hole, the spring is sleeved on the guide rod, and the spring is pressed between the mounting plate and the mounting frame.

[0018] In this solution, the above-mentioned structural form is adopted, and the guide hole and the guide rod play a guiding role, so that the mounting frame moves along the insertion direction of the connector body, effectively avoiding the offset and misalignment of multiple connector bodies during the plug-in process, and improving the stability of the liquid-cooled connector.

[0019] In addition, the guide rod facilitates the installation of the spring and effectively avoids the shaking and deflection of the spring. At the same time, the elastic component has a simple structure and is easy to install.

[0020] Preferably, there is a gap between the guide rod and the guide hole.

[0021] In the present solution, the above-mentioned structural form is adopted, and the gap is used to enable the liquid-cooled connector to produce a certain displacement along the radial direction of the guide rod, thereby solving the positioning error and parallelism error that exist in the process of installing the liquid-cooled connector on the mounting frame, and ensuring the precise connection between the plug-in port of the connector body and the battery pack.

[0022] Preferably, the outer peripheral surface of the guide rod has a protrusion extending outward in the radial direction of the guide rod, the mounting frame is located between the mounting plate and the protrusion, the protrusion is inserted into the guide hole, and the protrusion is inclined toward the end face of the mounting frame.

[0023] In this solution, the above-mentioned structural form is adopted, and the spring can be pressed between the mounting plate and the mounting frame through the raised portion, thereby ensuring that the spring has a certain tension force.

[0024] In addition, the end surface of the protrusion is an inclined surface, so that the end surface of the guide rod along the radial direction thereof has displacement space.

[0025] Preferably, each of the plurality of connector bodies is any one of a liquid-cooling socket and a liquid-cooling plug, and the liquid-cooling socket cooperates with the liquid-cooling plug.

[0026] Preferably, the battery pack bracket assembly also includes an electrical connector, and the electrical connector and the liquid cooling connector are both mounted on the same side wall of the mounting frame, and the electrical connector includes a pole mounting seat and a pole assembly, and the pole mounting seat is connected to the mounting frame, and the pole mounting seat is provided with a mounting hole, and the pole assembly passes through the mounting hole, and the pole assembly is partially floatingly connected within the pole mounting seat.

[0027] In this solution, the above-mentioned structural form is adopted to realize electrical connection of the pole assembly, which effectively avoids abnormalities such as electrical connection failure or burning caused by loose electrical connection, and improves the stability of the electrical connector during electrical connection.

[0028] Preferably, the pole assembly includes a pole body and a conductive elastic member, the conductive elastic member is arranged in the pole mounting seat, one end of the pole body is penetrated by the mounting hole, and the other end of the pole body is connected to the conductive elastic member.

[0029] In this solution, the above structural form is adopted, and the pole body is connected in a floating manner through the conductive elastic member, so that the electrical connection is more stable, and the reliability and service life of the electrical connection are greatly enhanced. At the same time, the structure is simple.

[0030] Preferably, the length direction of the mounting hole is the same as the insertion direction of the liquid-cooling connector.

[0031] In this solution, the above-mentioned structural form is adopted, and the pole body can only move back and forth along the installation hole during the plug-in process, which effectively limits the pole body, prevents the pole body from being offset and misaligned, and improves the stability of the electrical connection of the pole body.

[0032] Preferably, at least one second guide portion is provided on the inner side of each of the liquid-cooled connector and the electrical connector, and the second guide portion protrudes and extends along the insertion direction of the liquid-cooled connector;

[0033] And / or, the second guide portion is recessed inwardly along the insertion direction of the liquid-cooling connector.

[0034] In this solution, the above-mentioned structural form is adopted, and the second guide part plays a role of guiding and positioning, thereby improving the insertion accuracy and stability.

[0035] Preferably, the battery pack bracket assembly also includes a plurality of locking components spaced apart along the insertion direction of the liquid-cooling connector, and the plurality of locking components are distributed on the corresponding side walls in the mounting frame and connected to the mounting frame, and the plurality of locking components are used to be detachably connected to the outer wall surface of the battery pack.

[0036] In the present solution, the above-mentioned structural form is adopted, and a detachable connection is achieved between the battery pack bracket assembly and the battery pack through the locking component, thereby improving the safety of the battery pack bracket assembly.

[0037] Preferably, the locking component includes a lock base, the lock base is connected to the mounting frame, the lock base has a locking groove for connecting and fixing the lock shaft of the battery pack, and the locking groove and the lock shaft of the battery pack are correspondingly arranged.

[0038] In this solution, the above-mentioned structural form is adopted, and the installation and disassembly are convenient through the locking groove and the pin shaft, and the structure is simple.

[0039] Preferably, the locking groove includes an entrance and a locking cavity, the entrance is communicated with the locking cavity, and the extension direction of the entrance is different from the extension direction of the locking cavity, and the extension direction of the locking cavity is the same as the insertion direction of the liquid-cooling connector.

[0040] In the present solution, the above-mentioned structural form is adopted, and the locking groove plays a limiting role on the lock shaft, which effectively avoids the separation between the heat dissipation tube of the battery pack and the liquid cooling connector, prevents the battery pack assembly from leaking, and greatly improves the stability of the battery pack assembly.

[0041] A battery pack assembly is characterized in that it includes a battery pack and the battery pack bracket assembly as described above, and the battery pack is detachably connected to the battery pack bracket assembly.

[0042] An electric vehicle is characterized in that it comprises the battery pack assembly as described above.

[0043] In this solution, the above-mentioned structural form is adopted, and the heat dissipation system of the electric vehicle is connected to the heat pipe in the battery pack through a liquid cooling connector, and the cooling water in the heat dissipation system is brought into the heat pipe to achieve thermal balance, which can balance the temperature of the battery pack, improve the full capacity of the battery pack, and directly improve the performance indicators of the battery pack in the electric vehicle, such as the restricted use environment, vehicle power performance, and battery pack life.

[0044] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0045] The positive and progressive effects of the present invention are:

[0046] The battery pack bracket assembly, battery pack assembly and electric vehicle of the present invention bring cooling water in the heat dissipation system into the heat dissipation pipe to achieve thermal balance through a liquid cooling connector, which can balance the temperature of the battery pack, improve the full capacity of the battery pack, and directly improve the performance indicators of the battery pack in the electric vehicle, such as the restricted use environment, vehicle power performance, and battery pack life. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 Schematic diagram of the structure of a battery pack assembly according to an embodiment of the present invention.

[0048] Figure 2 It is a schematic structural diagram of a battery pack bracket assembly of a battery pack assembly according to an embodiment of the present invention.

[0049] Figure 3 Schematic diagram of the exploded structure of the battery pack bracket assembly of the battery pack assembly according to an embodiment of the present invention.

[0050] Figure 4 A schematic diagram of a portion of the internal structure of a battery pack bracket assembly of a battery pack assembly according to an embodiment of the present invention.

[0051] Figure 5 It is a schematic structural diagram of a liquid-cooled connector of a battery pack bracket assembly of a battery pack assembly according to an embodiment of the present invention.

[0052] Figure 6 Schematic diagram of the internal structure of the electrical connector of the battery pack bracket assembly of the battery pack assembly according to an embodiment of the present invention.

[0053] Figure 7 Schematic diagram of the structure of the locking component of the battery pack bracket assembly of the battery pack assembly according to an embodiment of the present invention.

[0054] Description of reference numerals:

[0055] Mounting bracket 1

[0056] Through hole 11

[0057] Guide hole 12

[0058] Accommodating chamber 13

[0059] Liquid cooling connector 2

[0060] Mounting plate 21

[0061] The first guide portion 211

[0062] Plug body 22

[0063] Elastic member 23

[0064] Guide rod 231

[0065] Spring 232

[0066] Protrusion 233

[0067] The second guide portion 24

[0068] Electrical connector 3

[0069] Pole mounting seat 31

[0070] Pole body 32

[0071] Conductive elastic member 33

[0072] Locking part 4

[0073] Lock base 41

[0074] Locking groove 42

[0075] Entrance 421

[0076] Locking chamber 422

[0077] Battery pack bracket assembly 10

[0078] Battery Pack 20 DETAILED DESCRIPTION

[0079] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0080] like Figures 1 to 7 As shown, the battery pack assembly of the embodiment of the present invention includes a battery pack bracket assembly 10 and a battery pack 20, and the battery pack 20 is detachably connected to the battery pack bracket assembly 10. The battery pack bracket assembly 10 includes a mounting frame 1 and a liquid cooling connector 2, the mounting frame 1 is used to mount the battery pack 20, and the battery pack 20 is detachably connected to the mounting frame 1; the liquid cooling connector 2 is mounted on the mounting frame 1, one end of the liquid cooling connector 2 is used to communicate with an external heat dissipation system, and the other end of the liquid cooling connector 2 is used to insert into the heat dissipation pipe of the battery pack 20 and communicate with the heat dissipation pipe of the battery pack 20. The cooling water provided by the external heat dissipation system will enter the heat dissipation pipe of the battery pack 20 through the liquid cooling connector 2, thereby balancing the temperature of the battery pack 20, improving the full capacity of the battery pack 20, and directly improving the service life of the battery pack 20.

[0081] The liquid-cooled connector 2 includes a mounting plate 21, a plurality of connector bodies 22, and a plurality of elastic members 23. One end of each of the plurality of elastic members 23 is connected to the mounting frame 1, and the other end of each of the plurality of elastic members 23 is connected to the mounting plate 21. Each of the plurality of connector bodies 22 is connected to the mounting plate 21 and inserted into the mounting frame 1. The plurality of connector bodies 22 are connected to an external heat dissipation system, and the plug ports of the plurality of connector bodies 22 are connected to the battery pack 20. Some of the plurality of connector bodies 22 are used to transport cooling water provided by the heat dissipation system to the battery pack 20, and the remaining connector bodies 22 are used to discharge cooling water in the battery pack 20 to the heat dissipation system, so that the cooling water provided by the external heat dissipation system can realize circulating cooling of the battery pack 20 through the plurality of connector bodies 22, effectively dissipating heat from the battery pack 20, and improving the performance and service life of the battery pack 20. At the same time, the elastic component 23 is used to achieve a floating connection between the mounting frame 1 and the mounting plate 21, thereby realizing a floating connection of multiple connector bodies 22, effectively avoiding loose connections of the connector bodies 22, greatly enhancing the stability of the liquid-cooled connector 2, effectively avoiding leakage of the liquid-cooled connector 2, and further extending the service life of the battery pack assembly.

[0082] The insertion direction of the plug body 22 can be the same as the elastic force direction of the elastic member 23. Multiple plug bodies 22 pass through the mounting plate 21 and are vertically mounted on the mounting plate 21. During the plugging process, multiple plug bodies 22 can be plugged in by moving along the axial direction of the plug body 22, that is, moving along the insertion direction of the plug body 22 can realize the plugging of multiple plug bodies 22. At the same time, during the plugging process, the insertion direction of the plug body 22 is the same as the elastic force direction of the elastic member 23, so that the plug body 22 can follow and adjust the position state during the plugging movement, which meets the precise insertion of the plug body 22 and improves the stability of the liquid-cooled connector 2.

[0083] The side wall of the mounting frame 1 may be provided with a through hole 11 along the insertion direction of the plug body 22, and a first guide portion 211 is provided in the mounting plate 21 on the side facing the mounting frame 1, and the first guide portion 211 is located in the through hole 11 and slides in the through hole 11. The first guide portion 211 slides in the through hole 11, and the first guide portion 211 and the through hole 11 can play a guiding role, ensuring that the liquid-cooled connector 2 moves along the insertion direction, and improving the plugging accuracy of the liquid-cooled connector 2.

[0084] At least one second guide portion 24 may be provided on the inner side of the liquid-cooled connector 2. The structure of the second guide portion 24 may extend and protrude along the insertion direction of the liquid-cooled connector 2, or the second guide portion 24 may be recessed inward along the insertion direction of the liquid-cooled connector 2. The plug-in accuracy of the liquid-cooled connector 2 is improved, and the stability of the connection between the liquid-cooled connector 2 and the battery pack 20 is improved. Preferably, when the battery pack 20 is installed and connected to the battery pack bracket assembly 10, the second guide portion 24 will first contact the battery pack 20 and achieve precise positioning, and then the plug-in port of the plug-in body 22 will be connected to the battery pack 20, ensuring the plug-in accuracy between the liquid-cooled connector 2 and the battery pack 20.

[0085] The side wall of the mounting frame 1 may be provided with a plurality of guide holes 12 along the insertion direction of the plug body 22, and the plurality of elastic members 23 each include a guide rod 231 and a spring 232. The guide rods 231 of the plurality of elastic members 23 correspond to the plurality of guide holes 12 one by one, and one end of the guide rod 231 is connected to the mounting plate 21, and the other end of the guide rod 231 passes through the guide hole 12 and slides in the guide hole 12. The spring 232 is sleeved on the guide rod 231, and the spring 232 is pressed between the mounting plate 21 and the mounting frame 1. The guide holes 12 and the guide rod 231 play a guiding role, so that the mounting plate 21 moves along the insertion direction of the plug body 22, effectively avoiding the offset and dislocation phenomenon of the plurality of plug bodies 22 during the plug-in process, and improving the stability of the liquid-cooled connector 2. The guide rod 231 facilitates the installation of the spring 232, and effectively avoids the shaking and offset phenomenon of the spring 232. At the same time, the elastic member 23 has a simple structure and is easy to install. Among them, one end of the guide rod 231 is connected to the mounting plate 21, and the other end of the guide rod 231 passes through the guide hole 12 and is provided with a limiting portion, which protrudes outward along the radial direction of the guide rod 231. The limiting portion and the mounting plate 21 are used to limit the sliding of the liquid-cooled connector 2 on the guide rod 231.

[0086] There is a gap between the guide rod 231 and the guide hole 12. The inner diameter of the guide hole 12 is larger than the diameter of the guide rod 231, so that when the guide rod 231 passes through the guide hole 12, there is a gap between the outer peripheral surface of the guide rod 231 and the inner wall surface of the guide hole 12. The gap allows the guide rod 231 to have space to move in its radial direction. When the battery pack 20 is installed and connected to the battery pack bracket assembly 10, even if there is a certain offset error in the second guide portion 24, the gap allows the liquid-cooled connector 2 to have a certain displacement in the radial direction of the guide rod 231, so that the second guide portion 24 can be accurately positioned, ensuring the accurate plug-in between the plug-in port of the connector body 22 and the battery pack 20, and solving the positioning error and parallelism error in the process of installing the liquid-cooled connector 2 on the mounting frame 1.

[0087] The outer circumference of the guide rod 231 is provided with a protrusion 233 extending outward in the radial direction of the guide rod 231. The mounting frame 1 is located between the mounting plate 21 and the protrusion 233. The protrusion 233 is inserted into the guide hole 12, and the end face of the protrusion 233 facing the mounting frame 1 is an inclined surface. The protrusion 233 enables the spring 232 to be pressed between the mounting plate 21 and the mounting frame 1, thereby ensuring that the spring 232 has a certain tension. At the same time, the end face of the protrusion 233 is an inclined surface. In the initial state, the guide rod 231 is coaxial with the guide hole 12. The outer circumference of the guide rod 231 has a gap with the guide hole 12, so that the end face of the guide rod 231 along its radial direction has displacement space.

[0088] Each of the multiple connector bodies 22 can be any one of a liquid cooling socket and a liquid cooling plug, that is, among the multiple connector bodies 22, all the connector bodies 22 are liquid cooling sockets, or all the connector bodies 22 are liquid cooling plugs, or some of the connector bodies 22 are liquid cooling sockets and the remaining connector bodies 22 are liquid cooling plugs. The liquid cooling socket is matched with the liquid cooling plug, and the liquid cooling connector assembly of this embodiment is connected by plugging the liquid cooling socket with the external liquid cooling plug, or the liquid cooling connector assembly of this embodiment is connected by plugging the liquid cooling plug with the external liquid cooling socket.

[0089] The battery pack support assembly 10 may further include an electrical connector 3. The electrical connector 3 and the liquid cooling connector 2 are both mounted on the same side wall of the mounting frame 1. The electrical connector 3 includes a pole mounting seat 31 and a pole assembly. The pole mounting seat 31 is connected to the mounting frame 1. The pole mounting seat 31 is provided with a mounting hole. The pole assembly penetrates the mounting hole, and the pole assembly is partially connected in the pole mounting seat 31 in a floating manner. The pole assembly is electrically connected to the battery pack 20. The pole assembly is connected in the pole mounting seat 31 in a floating manner, so that the electrical connector 3 of the battery pack support assembly 10 and the battery pack 20 are connected in a floating manner, which effectively avoids abnormalities such as electrical connection failure or burning caused by loose electrical connection, and improves the stability of the electrical connector 3 during electrical connection.

[0090] The pole assembly includes a pole body 32 and a conductive elastic member 33. The conductive elastic member 33 is arranged in the pole mounting seat 31. One end of the pole body 32 is provided with a mounting hole, and the other end of the pole body 32 is connected to the conductive elastic member 33. The lower end of the pole body 32 passes through the mounting hole and is exposed on the outer surface of the pole mounting seat 31, and the lower end of the pole body 32 is electrically connected to the battery pack 20. The upper end of the pole body 32 is connected to the conductive elastic member 33. The conductive elastic member 33 makes the pole body 32 and the battery pack 20 floatingly connected, and the electrical connection is more stable, which greatly enhances the reliability and service life of the electrical connection. Among them, the conductive elastic member 33 can be a conductive spring, or it can be made of a flexible conductive material.

[0091] The length direction of the mounting hole can be the same as the insertion direction of the liquid-cooled connector 2. The pole body 32 can only move back and forth along the mounting hole during the plugging process, which effectively limits the pole body 32, prevents the pole body 32 from being offset and misaligned, and improves the stability of the electrical connection of the pole body 32.

[0092] At least one second guide portion 24 may also be provided on the inner side of the electrical connector 3. The structure of the second guide portion 24 may extend and protrude along the insertion direction of the liquid-cooling connector 2. The electrical connector 3 is inserted into the battery pack 20 through the second guide portion 24. During the plugging process of the liquid-cooling connector 2, the second guide portion 24 plays a guiding and positioning role, thereby improving the plugging accuracy of the electrical connector 3 and the stability of the electrical connection of the electrical connector 3. Of course, the structure of the second guide portion 24 may be recessed inward along the insertion direction of the liquid-cooling connector 2.

[0093] The battery pack bracket assembly 10 may also include a plurality of locking components 4 arranged at intervals along the insertion direction of the liquid cooling connector 2, and the plurality of locking components 4 are distributed on the corresponding two side walls in the mounting frame 1 and connected to the mounting frame 1, and the plurality of locking components 4 are used to be detachably connected to the outer wall surface of the battery pack 20. During the plugging process between the battery pack 20 and the liquid cooling connector 2, the battery pack 20 moves along the insertion direction of the liquid cooling connector 2 and locks with the plurality of locking components 4, so that both sides of the battery pack 20 are mounted on the locking components 4 of the battery pack bracket assembly 10. The locking components 4 enable the battery pack bracket assembly 10 to be detachably connected to the battery pack 20, thereby improving the safety of the battery pack bracket assembly 10. Among them, the mounting frame 1 has a receiving cavity 13, and the plurality of locking components 4 are located in the receiving cavity 13, and the battery pack 20 is installed in the receiving cavity 13.

[0094] The locking component 4 may include a lock base 41, which is connected to the mounting frame 1. The lock base 41 has a locking groove 42 for the lock shaft of the battery pack 20 to be connected and fixed. The locking groove 42 and the lock shaft of the battery pack 20 are arranged correspondingly. When the battery pack 20 is installed in the battery pack bracket assembly 10, the battery pack 20 moves along the insertion direction close to the liquid cooling connector 2 and is inserted into the liquid cooling connector 2, so that the heat pipe in the battery pack 20 is connected to the liquid cooling connector 2, and the lock shaft on the battery pack 20 is also inserted into the locking groove 42 accordingly through the movement of the battery pack 20, so that the battery pack 20 is installed and fixed on the battery pack bracket assembly 10. On the contrary, the lock shaft on the battery pack 20 will move out of the locking groove 42, so that the battery pack 20 and the battery pack bracket assembly 10 can be disassembled, and the installation and disassembly are convenient, and the structure is simple.

[0095] The locking groove 42 may include an inlet 421 and a locking cavity 422. The inlet 421 is connected to the locking cavity 422. The extension direction of the inlet 421 is different from the extension direction of the locking cavity 422. The extension direction of the locking cavity 422 is the same as the insertion direction of the liquid-cooling connector 2. The lock shaft enters the locking groove 42 through the inlet 421. When the heat dissipation pipe of the battery pack 20 is inserted and connected with the liquid-cooling connector 2, the lock shaft will enter the locking cavity 422. The locking groove 42 limits the lock shaft, effectively avoiding the separation between the heat dissipation pipe of the battery pack 20 and the liquid-cooling connector 2, preventing the battery pack assembly from leaking, and greatly improving the stability of the battery pack assembly. Preferably, the extension direction of the inlet 421 is perpendicular to the extension direction of the locking cavity 422. The shape of the inlet 421 is trumpet-shaped, which is convenient for inserting the lock shaft on the battery pack 20.

[0096] The present invention also discloses an electric vehicle, which includes the battery pack assembly as described above, the mounting frame 1 of the battery pack bracket assembly 10 is fixed on the chassis of the electric vehicle, one end of the liquid cooling connector 2 is connected to the heat dissipation system of the electric vehicle, and the other end of the liquid cooling connector 2 is used to insert the heat dissipation pipe of the battery pack 20 and is connected to the heat dissipation pipe of the battery pack 20. The heat dissipation system of the electric vehicle is connected to the heat dissipation pipe in the battery pack 20 through the liquid cooling connector 2, and the cooling water in the heat dissipation system is brought into the heat dissipation pipe to achieve thermal balance, which can balance the temperature of the battery pack 20, improve the full capacity of the battery pack 20, and directly improve the performance indicators such as the limited use environment of the battery pack 20 in the electric vehicle, the vehicle power performance, and the battery pack life.

[0097] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A battery pack bracket assembly, characterized in that: It includes: A mounting frame, the mounting frame is used to be fixed on the chassis of the car, and the mounting frame is used to install the battery pack; A liquid cooling connector, the liquid cooling connector is mounted on the mounting frame, one end of the liquid cooling connector is used to be connected to the cooling system of the automobile, and the other end of the liquid cooling connector is used to be inserted into the cooling pipe of the battery pack and connected to the cooling pipe of the battery pack; The liquid-cooled connector includes a mounting plate, a plurality of connector bodies and a plurality of elastic members, one end of each of the elastic members is connected to the mounting frame, the other ends of each of the elastic members is connected to the mounting plate, and each of the connector bodies is connected to the mounting plate and inserted into the mounting frame; The side wall of the mounting frame is provided with a plurality of guide holes along the insertion direction of the plug body, the plurality of elastic members each include a guide rod and a spring, the plurality of guide rods correspond to the plurality of guide holes one by one, and one end of the guide rod is connected to the mounting plate, the other end of the guide rod passes through the guide hole and slides in the guide hole, the spring is sleeved on the guide rod, and the spring is pressed between the mounting plate and the mounting frame; The outer peripheral surface of the guide rod has a protrusion extending outward in the radial direction of the guide rod, the mounting frame is located between the mounting plate and the protrusion, the protrusion is inserted into the guide hole, and the end surface of the protrusion facing the mounting frame is inclined; A gap is provided between the guide rod and the guide hole.

2. The battery pack bracket assembly according to claim 1, characterized in that: The insertion direction of the plug body is the same as the elastic force direction of the elastic component.

3. The battery pack bracket assembly according to claim 1, characterized in that: The side wall of the mounting frame is provided with a through hole along the insertion direction of the plug body, and the mounting plate is provided with a first guide portion on a side facing the mounting frame. The first guide portion is located in the through hole and slides in the through hole.

4. The battery pack bracket assembly according to claim 1, characterized in that: Each of the plurality of connector bodies is any one of a liquid cooling socket and a liquid cooling plug, and the liquid cooling socket matches the liquid cooling plug.

5. The battery pack bracket assembly according to claim 1, characterized in that: The battery pack bracket assembly also includes an electrical connector, and the electrical connector and the liquid cooling connector are both installed on the same side wall of the mounting frame. The electrical connector includes a pole mounting seat and a pole assembly. The pole mounting seat is connected to the mounting frame, and the pole mounting seat is provided with a mounting hole. The pole assembly passes through the mounting hole, and the pole assembly is partially floatingly connected within the pole mounting seat.

6. The battery pack bracket assembly according to claim 5, characterized in that: The pole assembly includes a pole body and a conductive elastic member, wherein the conductive elastic member is arranged in the pole mounting seat, one end of the pole body is penetrated by the mounting hole, and the other end of the pole body is connected to the conductive elastic member.

7. The battery pack bracket assembly according to claim 5, characterized in that: The length direction of the mounting hole is the same as the insertion direction of the liquid-cooling connector.

8. The battery pack bracket assembly according to claim 5, characterized in that: At least one second guide portion is provided on the inner side of each of the liquid-cooled connector and the electrical connector, and the second guide portion protrudes and extends along the insertion direction of the liquid-cooled connector; And / or, the second guide portion is recessed inwardly along the insertion direction of the liquid-cooling connector.

9. The battery pack bracket assembly according to claim 1, characterized in that: The battery pack bracket assembly also includes a plurality of locking components spaced apart along the insertion direction of the liquid-cooling connector, and the plurality of locking components are distributed on the corresponding side walls of the mounting frame and connected to the mounting frame, and the plurality of locking components are used to be detachably connected to the outer wall surface of the battery pack.

10. The battery pack bracket assembly according to claim 9, characterized in that: The locking component includes a lock base, which is connected to the mounting frame. The lock base has a locking groove for connecting and fixing the lock shaft of the battery pack, and the locking groove and the lock shaft of the battery pack are correspondingly arranged.

11. The battery pack bracket assembly according to claim 10, characterized in that: The locking groove includes an entrance and a locking cavity, the entrance is communicated with the locking cavity, and the extension direction of the entrance is different from the extension direction of the locking cavity, and the extension direction of the locking cavity is the same as the insertion direction of the liquid-cooling connector.

12. A battery pack assembly, characterized in that: It comprises a battery pack and a battery pack bracket assembly as described in any one of claims 1 to 11, wherein the battery pack is detachably connected to the battery pack bracket assembly.

13. An electric vehicle, characterized in that: It includes the battery pack assembly as claimed in claim 12.

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