Modularized temperature control board pressing mechanism of new energy battery pack

Abstract

The utility model discloses a modularized temperature control plate pressing mechanism of a new energy battery pack, which comprises a plurality of heat exchange plates which are relatively independently mounted on a mounting frame in a sliding manner, and a downward pressing driving part is arranged above the heat exchange plates; and a downward pressing transmission assembly capable of simultaneously pushing the plurality of heat exchange plates to synchronously press downwards is arranged between the downward pressing driving part and the heat exchange plates. According to the device, the whole heat exchange plate is divided into small blocks to be arranged above the battery pack, and the downward pressing driving part and the downward pressing transmission assembly simultaneously drive the multiple heat exchange plates to be tightly attached to the surface of the battery module or the surface of the battery pack; on one hand, the problem that the heat exchange efficiency is reduced due to the fact that the whole heat exchange plate is not tightly attached to the surface of the battery pack and a gap exists can be solved, and on the other hand, when the battery pack needs to be inserted, pulled and replaced, the driving part is pressed downwards to relieve the pressing force, and the battery pack is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature control equipment of a battery pack with a battery replacement type, and specifically relates to a modular temperature control plate pressing mechanism of a new energy battery pack. Background Art

[0002] Electric vehicles are the development direction of new energy vehicles. They use battery packs to store electrical energy as a power source to drive the car. In order to ensure a certain total power and output voltage requirements, electric vehicles need to be equipped with a certain number of battery packs, and the battery packs are connected through copper bars to form battery modules. In order to improve the safety of the battery pack, the battery module is assembled in the shell to form a battery pack. The heat generated by the charging and discharging of the battery pack causes the temperature to rise. Excessive temperature will have an adverse effect on the performance and service life of the battery, and may even cause thermal runaway and endanger personal safety. Therefore, the battery pack in use must be cooled and cooled. At the same time, in areas with lower temperatures, the charging efficiency of the battery pack is lower when the temperature is lower. Therefore, the battery pack needs to be preheated in advance to ensure that it has better charging efficiency and achieves the effect of fast charging. Therefore, it is necessary to add temperature control devices to the battery bottom compartment, battery exchange cabinet and other facilities where the battery pack is placed and needs to be charged and discharged.

[0003] At present, there are two types of battery-swap electric vehicles: Figure 1 As shown, the battery replacement operation is completed by disassembling and replacing the entire large battery pack under the vehicle. At the same time, in order to control the temperature of the battery pack, a water cooling plate that can fit tightly with the surface of the battery pack needs to be set. In order to make the entire water cooling plate fit tightly with the surface of the battery pack, the water cooling plate is directly laid relatively fixedly on the surface of the battery module;

[0004] During the battery replacement process, when the battery pack is installed on the bottom of the vehicle body, the pipe joint of the water cooling plate is connected to the vehicle body water pump to form a circulating water circuit with the water cooling plate on the battery pack. However, in actual applications, since the water cooling pipe needs to be connected when replacing the battery pack, on the one hand, it increases the difficulty of battery replacement and limits the efficiency of battery replacement operation. On the other hand, the water cooling pipe is plugged and unplugged many times during the battery replacement process. Due to the impact of multiple instantaneous water pressures, it is easy to cause damage to the pipe, affecting the service life of the temperature control component. Therefore, the temperature control device of the entire battery pack needs to be redesigned;

[0005] Another is Figure 2 As shown in the figure, a battery compartment is set at the bottom of the vehicle, and multiple small battery packs are plugged in and out of the battery compartment to complete the battery replacement. In the traditional solution, each water cooling plate is pressed down to fit the corresponding battery pack, which is prone to insufficient pressure and insufficient fit of the battery pack, or excessive pressing force, affecting the normal plug-in and pull-out battery replacement operation;

[0006] Improvements are made to the design to address the pain points of the temperature control solutions for the above two types of battery packs. Utility Model Content

[0007] The purpose of the utility model is to provide a modular temperature control plate clamping mechanism for a new energy battery pack for use, so as to solve the problems of the service life of the water cooling assembly and the close fit between the water cooling plate and the battery pack surface raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a modular temperature control plate clamping mechanism for a new energy battery pack, comprising a plurality of heat exchange plates relatively independently slidably mounted on a mounting frame, the heat exchange plates being located above the battery pack, a downward pressure driving portion being arranged above the heat exchange plates, and a downward pressure transmission assembly being arranged between the downward pressure driving portion and the heat exchange plates, which can simultaneously push a plurality of heat exchange plates downward synchronously.

[0009] Preferably, the downward pressure transmission assembly includes a support frame fixedly connected to the heat exchange plate, a beam body arranged above the support frame and driven downward by a downward pressure driving part, and a pressure-absorbing gasket fixedly arranged on the pressure-bearing part of the support frame.

[0010] Preferably, the heat exchange plate is relatively parallel to the corresponding support frame and is fixedly connected via a plurality of guide columns therebetween, and the guide columns are slidably connected to the mounting frame via a support seat.

[0011] Preferably, a spring is sleeved on the guide column, and two ends of the spring are respectively supported on the guide seat and the support frame.

[0012] Preferably, a guide seat with a guide groove in the middle is fixedly mounted on the support frame, the beam body is slidably connected to the guide seat via the guide groove, the guide groove is consistent with the width of the beam body, and the pressure-reducing gasket is arranged at the bottom of the guide groove.

[0013] Preferably, bolts are relatively vertically fixedly installed on the beam body, and the other ends of the bolts pass through the pressure-reducing gasket, the guide seat and the reserved holes on the support frame in sequence.

[0014] Preferably, the downward pressing driving part comprises a linear driving unit fixedly mounted on a mounting frame at the bottom of the vehicle, a driving rod driven to translate by the linear driving unit, and a rod member mounted on the beam body;

[0015] The side surface of the driving rod in contact with the rod member is set as an inclined surface. When the rod member moves in translation, the rod member and the inclined surface move relative to each other and always keep in contact with the inclined surface.

[0016] Preferably, the heat exchange plate is a plate with a flow channel arranged inside, and the water outlet and water inlet of the internal flow channel are respectively connected to the main pipe on the vehicle body through a hose to form a circulating water circuit.

[0017] The technical effects and advantages of the utility model: the modular temperature control plate pressing mechanism of the new energy battery pack,

[0018] 1. Set the heat exchanger plate, pipelines, water pumps and other temperature control equipment to the bottom of the vehicle body, instead of laying the heat exchanger plate relatively fixedly on the battery pack and separating it from the pipeline. Avoid the impact pressure problem caused by the need to dock the pipeline every time when changing the battery. In addition, the entire heat exchanger plate in the traditional temperature control equipment is divided into separate small pieces, and the clamping mechanism drives each small piece to drop synchronously to avoid contact with the battery pack. Ensure the output of appropriate pressure to ensure that the small heat exchanger plates in each position can fit tightly with the battery pack, thereby ensuring heat dissipation efficiency, while eliminating the need for pipeline docking, reducing the difficulty of battery replacement operations, and speeding up battery replacement efficiency.

[0019] 2. To solve the problem that when the heat exchange plate is divided into several independent small pieces and driven to fit against various areas of the battery pack, the heat exchange plates are subjected to uneven force, the fit of the heat exchange plates at some positions is quite different, and some positions are over-pressurized;

[0020] First, the structure of the pressing mechanism is designed. The inclined surface of the driving rod cooperates with the rod to drive the beam body to press down smoothly. On the one hand, it can prevent the heat exchange plate from impacting the battery pack and causing damage due to excessive downward pressure. On the other hand, the beam body is pressed down smoothly, and the output pressure is greater. The heat exchange plate is driven by the support frame to descend relatively smoothly along the guide column, which can avoid the heat exchange plate from tilting and jamming during the descent process, and completely cover the surface of the battery pack.

[0021] The beam and the support frame are set to a separate structure. When the beam is pressed down onto the support frame, the downward pressure of the beam is supported and absorbed by the deformation of the pressure relief gasket, so as to prevent the support frame from outputting excessive rigid pressure to the battery pack and causing hard damage. This allows the clamping mechanism to output greater pressure to ensure that the heat exchange plate at each position fits the battery pack, without causing excessive pressure at some positions to damage the battery pack;

[0022] The support frame structure and the position where the beam applies force to the support frame are optimized to better balance the pressure output by the downward pressure mechanism. The downward pressure of each heat exchange plate is relatively uniform, further ensuring that the heat exchange plate at each position fits tightly to the battery pack and the pressure is moderate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the single-battery pack-type battery replacement solution used in the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the multi-battery pack type battery replacement solution used in the present utility model;

[0025] Figure 3 for Figure 1 A partial enlarged view of the middle A;

[0026] Figure 4 It is a schematic diagram of the coordination between the beam and the support frame;

[0027] Figure 5 It is a partial enlarged view of point B in the figure;

[0028] Figure 6 It is a structural schematic diagram of the clamping mechanism;

[0029] Figure 7 for Figure 5 A partial enlarged view of point C in the middle;

[0030] Figure 8 Schematic diagram of the cooperation between the driving rod and the beam body.

[0031] In the figure: 1. mounting frame; 2. hose; 3. heat exchange plate;

[0032] 4. Pressing driving part; 410. Linear driving unit; 420. Driving rod;

[0033] 5. downward pressure transmission assembly; 510. support frame; 520. beam body; 530. pressure relief gasket;

[0034] 6. Guide column; 7. Spring; 8. Bolt; 9. Main pipeline; 10. Rod; 11. Inclined surface; 12. Connecting seat; 13. Guide seat; 14. Guide groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The utility model provides Figure 1-8 The modular temperature control plate clamping mechanism of a new energy battery pack shown includes a plurality of heat exchange plates 3 that are relatively independently slidably mounted on a mounting frame 1. The heat exchange plates are located above the battery pack. A downward pressing drive unit 4 is provided above the heat exchange plates 3. A downward pressing transmission assembly 5 that can simultaneously push a plurality of heat exchange plates 3 downward synchronously is provided between the downward pressing drive unit 4 and the heat exchange plates 3. When performing a battery replacement operation, the entire battery pack is lifted up and installed on the bottom mounting frame 1 of the vehicle. At this time, the heat exchange plate 3 is located above the battery pack, and the downward pressure is smoothly output by the downward pressing drive unit 4, while the downward pressing transmission assembly 5 evenly distributes the pressure output by the downward pressing drive to each heat exchange plate 3, so that a plurality of heat exchange plates 3 are pressed downward synchronously. The continuous output pressure ensures that the heat exchange plate 3 fits tightly with the battery pack, and can perform heat exchange with the battery pack, thereby achieving the effect of controlling the temperature of the battery pack. Avoiding the tightness of the fit between the heat exchange plate 3 and the surface of the battery pack and the heat exchange plate 3 affects the heat exchange efficiency;

[0037] In addition, in actual applications, it is necessary to drive several independent small heat exchange plates 3 downward at the same time and provide appropriate pressure so that each heat exchange plate 3 fits tightly against the surface of the battery pack. This ensures the heat conduction efficiency. When driving each heat exchange plate 3 to fit against the corresponding battery pack, due to the difference in pressure on the heat exchange plates 3 at various positions in the battery compartment, the errors in the assembly of the heat exchange plates 3, and the possible deviations in the lifting and lowering activities of the heat exchange plates 3, it is easy to cause the heat exchange plates 3 at some positions to fail to fit tightly against the battery pack. Although by continuously increasing the pressure output by the clamping mechanism, it can be ensured that there is sufficient fitting pressure between all heat exchange plates 3 and the battery pack. However, some positions may also cause the problem of excessive pressure on the battery pack, which is easy to cause damage. Therefore, it is necessary to design the movement guide and clamping mechanism of the heat exchange plate 3 to ensure that the heat exchange plates 3 at various positions in the battery compartment exert moderate pressure on the battery pack and fit tightly.

[0038] like Figure 6 As shown, the downward pressure transmission assembly 5 includes a support frame 510 fixedly connected to the heat exchange plate 3, a beam body 520 arranged above the support frame 510 and driven downward by the downward pressure driving unit 4, and a pressure buffering gasket 530 fixedly arranged on the pressure-bearing part of the support frame 510. When the beam body 520 and the support frame 510 are close to each other, the pressure buffering gasket 530 is compressed and deformed. Compared with the structure in which the beam body 520 and the support frame 510 are relatively fixedly connected in the traditional structure, and the support frame 510 is directly driven to descend by the beam body 520, in the solution provided by this embodiment, the beam body 520 is separated from the support frame 510. When the beam body 520 is pressed down to the support frame 510, the support frame 510 is pushed downward together with the heat exchange plate 3 below, and the pressure buffering gasket 530 absorbs and supports the downward pressure of the beam body 520, so as to prevent the support frame 510 from outputting excessive rigid pressure to the battery pack and causing hard damage. This allows the clamping mechanism to output a greater pressure to ensure that the heat exchange plate 3 at each position fits the battery pack without causing excessive pressure on the battery pack at some positions.

[0039] The heat exchange plate 3 is relatively parallel to the corresponding support frame 510, and is fixedly connected by a plurality of guide columns 6 therebetween, and the guide column 6 is slidably connected to the mounting frame 1 through the support seat. A spring 7 is sleeved on the guide column 6, and the two ends of the spring 7 are respectively supported on the guide seat 13 and the support frame 510. It is ensured that during the process of disassembling and assembling the battery pack, the clamping mechanism releases the downward pressure on the support frame 510 and the heat exchange plate 3. At this time, the pressure on the spring 7 disappears, and the support frame 510 is pushed up by the restoring force to drive the heat exchange plate 3 to rise, so that when the battery pack is plugged in and out, the battery pack is separated from the heat exchange plate 3.

[0040] like Figure 6-8As shown, the downward driving part 4 in this case includes a linear driving unit 410 fixedly mounted on the vehicle bottom mounting frame 1 (a structure such as an electric push rod can be used to provide a linear driving force), the output end of the linear driving unit 410 is fixedly connected to the driving rod 420 through a connecting assembly, and the linear driving unit 410 and the driving rod 420 are horizontally placed above the battery compartment and maintain a relatively parallel state with the vehicle bottom mounting frame 1. The rod 10 is installed on the beam body 520 through the connecting seat 12. The side of the driving rod 420 and the rod 10 that releases the relative sliding contact is set as an inclined surface 11, and when the rod 10 is translated, the rod 10 always maintains a close contact with the inclined surface 11. When the linear drive mechanism pushes the drive rod 420 to translate above the battery compartment, the rod 10 slides along the inclined surface 11. Since the drive rod 420 is horizontally placed above the battery compartment, there is a height difference in the longitudinal direction. The rod 10 slides from the high point of the inclined surface 11 to the low point of the inclined surface 11. At this time, the rod 10 is displaced in the longitudinal direction and descends, thereby driving the beam 520 to synchronously descend to press the support frame 510 below. The clamping mechanism has a more linear and gentle pressure output, which can avoid the instantaneous driving of the beam 520 downward, causing the support frame 510 to drive the heat exchange plate 3 to impact the surface of the battery pack. In addition, compared with directly using a linear mechanism to push the support frame 510 and the heat exchange plate 3 downward, the downward driving force is more stable, and the heat exchange plate 3 is relatively gentle during the descent along the guide column 6, which can avoid jamming and tilting. This allows each heat exchange plate 3 to accurately descend to a position close to the battery pack and fit tightly with the surface of the battery pack;

[0041] The rod 10 is rotatably mounted on the beam 520 through the connecting seat 12. When the rod 10 translates, the rod 10 rolls along the inclined surface 11. Compared with sliding along the inclined surface 11, the rod 10 rolls along the inclined surface 11, which has less friction, thereby ensuring the service life of the rod 10 and reducing the failure rate.

[0042] As shown in the figure, a support frame 510 is correspondingly arranged at both ends of each beam 520, and the two support frames 510 are arranged symmetrically with the pressure part of the clamping mechanism on the beam 520. The support frame 510 is in an I-shape, and the two ends of the longitudinal rod are respectively fixedly connected to the middle of the cross rod, and the force application point of the beam 520 on the support frame 510 is located in the middle of the longitudinal rod; the guide column 6 is symmetrically arranged on the heat exchange plate 3, and the two ends of the cross rod are respectively fixedly connected to the symmetrical guide columns 6. The downward pressure output by the downward pressure mechanism is transmitted to the heat exchange plate 3 through the beam 520, the longitudinal rod of the support frame 510, and the cross rod of the support frame 510 in turn. Since the pressure part of the downward pressure mechanism on the beam 520 is in the middle of the beam 520, the two support frames 510 pressed by the beam 520 are symmetrically arranged at both ends, and the force point of the support frame 510 is in the middle of its longitudinal rod. Thereby, the pressure output by the pressing mechanism is better balanced, and the pressing force of each heat exchange plate 3 is relatively uniform, further ensuring that the heat exchange plate 3 at each position fits tightly with the battery pack and the pressure is moderate.

[0043] like Figure 4-5 As shown, a guide seat 13 with a guide groove 14 in the middle is fixedly installed on the support frame 510, and the beam body 520 is slidably connected to the guide seat 13 through the guide groove 14. The guide groove 14 is consistent with the width of the beam body 520, and the pressure relief gasket 530 is arranged at the bottom of the guide groove 14. Bolts 8 are relatively vertically fixedly installed on the beam body 520, and the other end of the bolt 8 passes through the pressure relief gasket 530, the guide seat 13 and the reserved holes on the support frame 510 in turn. In the process of the beam body 520 being driven to descend by the downward pressure mechanism, the beam body 520 is always lifted and lowered longitudinally through the guiding and limiting effects of the guide groove 14 and the bolt 8, so as to apply pressure in a direction vertical to the support frame 510, thereby avoiding the problem of the heat exchange plate 3 being stuck or tilted due to the oblique force.

[0044] The temperature control device of this case can be applied to not only the bottom warehouse of new energy electric vehicles or charging cabinets of battery swap stations, but also to any equipment used to store battery cells and perform charging and discharging operations on battery cells.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A modular temperature control plate clamping mechanism for a new energy battery pack, comprising a plurality of heat exchange plates (3) relatively independently slidably mounted on a mounting frame (1), wherein the heat exchange plates (3) are located above the battery pack, and characterized in that: A downward pressing driving part (4) is arranged above the heat exchange plate (3), and a downward pressing transmission assembly (5) capable of simultaneously pushing a plurality of heat exchange plates (3) downward synchronously is arranged between the downward pressing driving part (4) and the heat exchange plate (3).

2. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 1 is characterized in that: The downward pressure transmission assembly (5) comprises a support frame (510) fixedly connected to the heat exchange plate (3), a beam body (520) arranged above the support frame (510) and driven downward by a downward pressure driving unit (4), and a pressure-absorbing gasket (530) fixedly arranged on the pressure-bearing part of the support frame (510).

3. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 2 is characterized in that: The heat exchange plate (3) is relatively parallel to the corresponding support frame (510), and is fixedly connected via a plurality of guide pillars (6) therebetween; the guide pillars (6) are slidably connected to the mounting frame (1) via a support seat.

4. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 3 is characterized in that: The guide column (6) is sleeved with a spring (7), and two ends of the spring (7) are respectively supported on the guide seat (13) and the support frame (510).

5. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 4 is characterized in that: A guide seat (13) having a guide groove (14) in the middle is fixedly mounted on the support frame (510); the beam body (520) is slidably connected to the guide seat (13) via the guide groove (14); the guide groove (14) and the beam body (520) have the same width; and the pressure-absorbing gasket (530) is arranged at the bottom of the guide groove (14).

6. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 5 is characterized in that: A bolt (8) is relatively vertically fixedly installed on the beam body (520), and the other end of the bolt (8) passes through the pressure-reducing gasket (530), the guide seat (13) and the reserved holes on the support frame (510) in sequence.

7. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 1 is characterized in that: The downward pressing driving part (4) comprises a linear driving unit (410) fixedly mounted on a vehicle bottom mounting frame (1), a driving rod (420) driven to translate by the linear driving unit (410), and a rod (10) mounted on a beam body (520) via a connecting seat (12); The side surface of the driving rod (420) in contact with the rod (10) is arranged as an inclined surface (11); when the rod (10) is in translation, the rod (10) and the inclined surface (11) move relative to each other and always remain in contact with the inclined surface (11).

8. The modular temperature control plate pressing mechanism of a new energy battery pack according to claim 1 is characterized in that: The heat exchange plate (3) is a plate with a flow channel arranged inside, and the water inlet and outlet of the internal flow channel are respectively connected to the main pipeline (9) on the vehicle body through a hose (2) to form a circulating water circuit.

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