Temperature control assembly of battery system, battery pack and vehicle

Abstract

The utility model discloses a temperature control assembly of a battery system, a battery pack and a vehicle, and relates to the technical field of batteries. The temperature control assembly is used for the battery system and comprises a temperature adjusting plate and a collecting pipe. The temperature adjusting plate is a heat conducting plate, at least two medium flow channels are formed in the temperature adjusting plate, and overflowing holes are formed in the temperature adjusting plate and correspond to the medium flow channels; the two collecting pipes are arranged on the two sides of the temperature adjusting plate respectively, each collecting pipe is provided with a connector, one collecting pipe connector is used for allowing a medium to flow in, the other collecting pipe connector is used for allowing the medium to flow out, a cavity is formed in each collecting pipe, at least two flow dividing holes communicated with the cavity are formed in each collecting pipe, and the flow dividing holes are communicated with the overflowing holes in a one-to-one correspondence mode; wherein the cross sectional areas of the at least two overflowing holes are unequal, and / or the cross sectional areas of the at least two shunting holes are unequal. The temperature control assembly allows the flow of the cooling medium passing through different positions to be controlled, so that the temperature of different areas of the battery module is adjusted, and the cooling of the battery module is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a temperature control component of a battery system, a battery pack and a vehicle. Background Art

[0002] The temperature control methods of traditional energy-type battery systems, such as liquid cooling plate or direct cooling plate control, although they play a certain role in heat dissipation, still have some limitations in practical applications. In particular, on some liquid cooling plates and direct cooling plates, the size of the medium flow channel is designed to be the same. This consistent design makes it difficult to differentiate the heat dissipation effect in various areas of the battery system. Because the heat generated by the battery during operation is not evenly distributed, some locations may accumulate more heat due to high current density, active chemical reactions and other reasons. For these locations where heat is concentrated, if the same size of medium flow channels are used for heat dissipation, it may not be able to meet their specific heat dissipation needs, resulting in the heat not being discharged in a timely and effective manner, thereby affecting the performance and life of the battery.

[0003] Therefore, there is room for improvement in the temperature control components of the battery system. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the utility model aims to provide a temperature control component, which has a good temperature control effect and a significant effect of improving the temperature consistency of the battery module.

[0005] A second aspect of the present invention is to provide a battery pack.

[0006] A third aspect of the present invention aims to provide a vehicle.

[0007] According to the temperature control component of the first embodiment of the utility model, the temperature control component is used in a battery system, and the temperature control component includes a temperature regulating plate and two collecting pipes. The temperature regulating plate is a heat-conducting plate, and at least two medium flow channels are arranged in the temperature regulating plate, and the temperature regulating plate is provided with a flow hole corresponding to each of the medium flow channels; two collecting pipes are respectively arranged on both sides of the temperature regulating plate, and each of the collecting pipes is provided with an interface, wherein the interface of one collecting pipe is used for the medium to flow in, and the interface of the other collecting pipe is used for the medium to flow out, and a cavity is arranged in the collecting pipe, and at least two shunt holes connected to the cavity are arranged on the collecting pipe, and the shunt holes are connected to the flow holes in a one-to-one correspondence; wherein, the cross-sectional areas of at least two of the flow holes are unequal, and / or, the cross-sectional areas of at least two of the shunt holes are unequal.

[0008] According to the temperature control component of the first aspect of the present invention, the flow rate of the cooling medium at different positions of the temperature control component is controlled by differentially designing the flow holes and the diversion holes in diameter, so that the cooling effect of different positions of the temperature control component can be adjusted according to actual needs, making the temperature control more flexible.

[0009] In some embodiments, in the collecting pipe, the cross-sectional area of ​​the flow holes far from the interface is larger than the cross-sectional area of ​​the flow holes close to the interface, and / or the cross-sectional area of ​​the diversion holes far from the interface is larger than the cross-sectional area of ​​the diversion holes close to the interface.

[0010] Optionally, the interface is located at one end of the manifold, the diverter hole and the flow-through hole are both circular holes, and the diameters of the diverter hole and the flow-through hole gradually increase in a direction away from the interface.

[0011] According to the temperature control assembly described in some embodiments of the present application, the temperature regulating plate includes at least two sub-plates, each of which is provided with a medium flow channel; all the sub-plates are spliced ​​in sequence along a first direction, and each of the sub-plates and the medium flow channels thereon are extended along a second direction, and the second direction is perpendicular to the first direction; and / or the collecting pipe extends along the first direction, and the collecting pipe is an extruded profile.

[0012] In some embodiments, the temperature regulating plate is an extruded profile, and the medium flow channel is formed integrally in the temperature regulating plate by extrusion.

[0013] Further optionally, the temperature regulating plate is integrally formed with a mounting hole by extrusion, and the temperature control assembly further comprises a heating body, and the heating body is disposed in the mounting hole.

[0014] In some embodiments, the flow diversion holes on the manifold are multiple and divided into at least two groups, and a rubber ring for sealing is provided between the manifold and the temperature regulating plate corresponding to each group of the flow diversion holes, and the rubber is arranged around the flow diversion holes in the same group;

[0015] A glue groove is provided on the surface of the manifold facing the temperature regulating plate, and the glue ring is arranged in the glue groove;

[0016] The collecting pipe is fixedly connected to the temperature regulating plate by bolts, and two bolts are provided for each rubber ring. The two bolts are located outside the corresponding rubber ring and are respectively arranged on both sides of the rubber ring along the length direction of the collecting pipe.

[0017] In some embodiments, the temperature control assembly further comprises a heat insulating pad connected to the temperature regulating plate, wherein the heat insulating pad is arranged on a side of the temperature regulating plate away from the manifold.

[0018] According to the battery pack of the second embodiment of the utility model, the battery includes a box, a battery module and a temperature control component. The battery module is arranged in the box; the battery module is the temperature control component described in the first embodiment of the present application, the temperature control component is arranged in the box, and the temperature regulating plate is connected to the battery module.

[0019] According to the battery pack of some embodiments of the present invention, the performance of the battery pack is stable, and the service life of the battery pack is increased.

[0020] According to the vehicle of the third aspect of the present utility model, the battery pack according to the above embodiment is installed in the vehicle.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of the structure of a battery pack according to some embodiments of the present application;

[0024] Figure 2 is a schematic diagram of a structure of a temperature control component according to some embodiments of the present application;

[0025] Figure 3 is another structural schematic diagram of a temperature control assembly according to some embodiments of the present application;

[0026] Figure 4 is a cross-sectional view of a temperature regulating plate according to some embodiments of the present application;

[0027] Figure 5 is a three-dimensional diagram of a temperature regulating plate according to some embodiments of the present application;

[0028] Figure 6 is another stereoscopic view of a temperature regulating plate according to some embodiments of the present application;

[0029] Figure 7 is a cross-sectional view of a sub-board according to some embodiments of the present application;

[0030] Figure 8 is a stereoscopic diagram of a header according to some embodiments of the present application;

[0031] Fig. 9 It is a schematic diagram of the structure of the collecting tube in some embodiments of the present application.

[0032] Reference numerals:

[0033] Battery Pack 1000,

[0034] Temperature control component 100,

[0035] Temperature control board 1, sub-board 10, medium flow channel 11, flow hole 13, installation channel 14,

[0036] Collecting pipe 2, interface 21, diversion hole 22, glue groove 23, threaded hole 24, glue ring 25,

[0037] Heating element 3, thermal insulation pad 4,

[0038] Battery module 200 and box body 300. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present utility model, it should be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Reference below Figure 1-Figure 9The temperature control assembly 100 according to an embodiment of the present invention is described. The application field of the temperature control assembly 100 is not limited, and can be used in a system that needs to control temperature, such as Figure 1 As shown, for example, a battery pack 1000, etc. In this application, the temperature control component 100 is described as being applied to a battery system, and will not be described in detail below.

[0043] According to some embodiments of the first aspect of the present invention, the temperature control assembly 100 includes a temperature regulating plate 1 .

[0044] like Figure 1 As shown, in a system using a thermostat 1 for temperature control, the thermostat 1 transfers heat by contacting the surface of the battery module 200 to achieve heat exchange, so the plane where the thermostat 1 contacts the battery module 200 is required to have a balanced temperature.

[0045] When the temperature of the battery module 200 is high and there is a temperature difference between the battery module 200 and the thermostat 1, heat is naturally transferred from the battery module 200 to the thermostat 1 and absorbed by the cooling medium in the thermostat 1. The cooling medium after absorbing heat leaves the thermostat 1, thereby completing the heat dissipation, ensuring the performance of the battery system and delaying the aging of the battery module 200.

[0046] like Figure 2-Figure 6 As shown, the temperature regulating plate 1 is a heat conducting plate, which has good heat conducting performance.

[0047] like Figure 4 As shown, at least two medium flow channels 11 are provided in the temperature control plate 1. It is known that a cooling medium for cooling, such as water, air, and refrigerant, is introduced into the medium flow channels 11.

[0048] The cooling medium flows in the medium flow channel 11 and can absorb the heat generated by the temperature regulating plate 1. This arrangement ensures that the temperature regulating plate 1 can be temperature regulated as a whole.

[0049] like Figure 5 As shown, a flow hole 13 is provided on the temperature regulating plate 1 corresponding to each of the medium flow channels 11 .

[0050] like Figure 2-Figure 3 As shown, the temperature control assembly 100 further includes: two manifolds 2. The two manifolds 2 are respectively arranged on both sides of the temperature regulating plate 1, each manifold 2 is provided with an interface 21, wherein the interface 21 of one manifold 2 is used for the inflow of the medium, and the interface 21 of the other manifold 2 is used for the outflow of the medium, a cavity is provided in the manifold 2, and at least two diversion holes 22 communicating with the cavity are provided on the manifold 2.

[0051] The function of the collecting pipe 2 is to divide and collect the flow, so as to realize the exchange of the cooling medium between the cavity and the medium flow channel 11, so as to realize heat exchange.

[0052] For example, the cooling medium enters the cavity through the interface 21 of one of the headers 2 , and then is diverted into the medium flow channel 11 through the diverter holes 22 , and then heat exchange is performed in the medium flow channel 11 .

[0053] Multiple flow holes 13 are connected to multiple diverter holes 22 in a one-to-one correspondence. This allows the cooling medium to flow into each medium flow channel 11 evenly, thereby improving the cooling efficiency. After the cooling medium flows into the medium flow channel 11, it absorbs the heat generated by the battery and takes it away. After the cooling medium absorbs heat, it enters the diverter hole 22 through the flow hole 13, then merges into the cavity of the manifold 2, and finally flows out of the manifold 2 through the interface 21. This enables the effective flow of the cooling medium, thereby absorbing heat and ensuring the cooling effect and performance of the battery module 200.

[0054] In some optional embodiments, the manifold 2 is extended along the first direction. The length of the manifold 2 is suitable for the length of the temperature regulating plate 1 to achieve a one-to-one correspondence between the flow diversion holes 22 and the flow holes 13.

[0055] The cross-sectional areas of at least two flow holes 13 on the temperature regulating plate 1 are different, and / or the cross-sectional areas of at least two flow diversion holes 22 are different.

[0056] By adjusting the cross-sectional area of ​​the flow holes 13 and / or the diverter holes 22, the effect of controlling the liquid flow rate of the medium flow channel 11 at different positions can be achieved. Therefore, according to the heat distribution characteristics inside the battery module 200, the cross-sectional area of ​​the flow holes 13 and / or the diverter holes 22 at the corresponding positions can be appropriately increased for areas with more heat generation or greater heat dissipation requirements to increase the cooling medium flow rate in the area, thereby improving the heat dissipation efficiency. Conversely, for areas with less heat generation or less heat dissipation requirements, the cross-sectional area of ​​the flow holes 13 or the diverter holes 22 at the corresponding positions can be appropriately reduced to save cooling medium and avoid unnecessary energy loss.

[0057] According to the temperature control component 100 of some embodiments of the present application, in the collecting pipe 2, the cross-sectional area of ​​the flow hole 13 far from the interface 21 is larger than the cross-sectional area of ​​the flow hole 13 close to the interface, and / or the cross-sectional area of ​​the diversion hole 22 far from the interface 21 is larger than the cross-sectional area of ​​the diversion hole 22 close to the interface 21.

[0058] This is because when the cooling medium fluid flows in the manifold 2, as the length of the manifold 2 increases, the pressure of the fluid will gradually decrease, and the flow rate will also decrease accordingly. Therefore, in order to ensure that the part of the temperature regulating plate 1 away from the interface 21 can obtain sufficient cooling medium, the flow rate can be increased by increasing the cross-sectional area of ​​the flow holes and / or diversion holes at the corresponding positions, thereby making up for the insufficient flow rate that may be caused by the reduction of fluid pressure. In addition, it is ensured that the flow rate of the cooling medium introduced into each medium flow channel 11 is uniform, thereby reducing the battery temperature more evenly, reducing the temperature difference between different parts of the battery module 200, and improving the consistency of the battery module 200.

[0059] In some embodiments, the interface 21 is located at one end of the manifold 2 , and the flow diversion hole 22 and the flow-through hole 13 are both circular holes.

[0060] By setting it in a circular shape, it is easier to process and can provide a more uniform flow distribution when the cooling medium fluid passes through.

[0061] In the direction away from the interface 21, the diameters of the flow diversion hole 22 and the flow-through hole 13 gradually increase. In this way, the flow rate of the cooling medium at the position away from the interface 21 can be increased, and the optimal distribution of the flow rate of the cooling medium is achieved.

[0062] According to some embodiments of the present invention, the temperature control assembly 100 is as follows: Figure 7 As shown, the temperature control plate 1 includes at least two sub-plates 10, each of which is provided with a medium flow channel 11. All sub-plates 10 are sequentially spliced ​​along a first direction, and each sub-plate 10 and the medium flow channel 11 thereon extend along a second direction, which is perpendicular to the first direction.

[0063] Here, the first direction refers to the length direction or width direction of the temperature regulating plate 1. Figure 3 , Figure 6 As shown, in the present application, the first direction refers to the length direction of the temperature regulating plate 1, and the second direction refers to the width direction of the temperature regulating plate 1. It is known that the first direction is the width direction of the temperature regulating plate 1 and the second direction is the length direction of the temperature regulating plate 1, and they also have the same effect, which will not be repeated below.

[0064] And / or, the header 2 extends along the first direction, and the header 2 is an extruded profile. After the extruded profile is cooled, it is cut according to the required length, which can improve the production flexibility and adaptability of the header 2.

[0065] Some traditional liquid cooling plates and direct cooling plates are stamped parts, which require high mold costs and are not suitable for small-scale production. In addition, some existing liquid cooling plates and direct cooling plates include an upper plate and a lower plate, and at least one of the two forms a flow channel. When the two plates are superimposed, they are welded to the surface area without a flow channel. Due to the thin thickness of the liquid cooling plate and the direct cooling plate, hot melt welding can easily cause welding deformation, which is not conducive to the control of the flatness of the liquid cooling plate and the direct cooling plate, and affects the balanced temperature control effect of the battery module.

[0066] In order to improve the above problems, the sub-plate 10 of the temperature regulating plate 1 in the present application is an extruded profile.

[0067] During production, the extruder extrude the required shape according to the die, and the extruded profile is placed in a cooling device for cooling to ensure that its shape is stable. Finally, the cooled profile is cut according to the required length of the sub-plate 10.

[0068] By splicing and arranging a plurality of sub-plates 10, the shape and size of the temperature regulating plate 1 can be flexibly adjusted to adapt to battery modules 200 of different sizes and shapes, thereby increasing the flexibility of production.

[0069] Furthermore, since the production of a single sub-board 10 is simpler than that of the entire temperature control board 1, the production difficulty is reduced. At the same time, each sub-board 10 can be produced and tested separately to ensure the quality and performance of each sub-board 10. If a problem occurs in the production or testing process of a sub-board 10, it can be handled separately without affecting the production of other sub-boards 10 or the entire temperature control board 1. The quality and reliability of the temperature control board 1 are improved, while the production cost and scrap rate are also reduced, making the manufacture of the temperature control assembly 100 more economical and efficient.

[0070] like Figure 7 As shown, each sub-plate 10 and the medium flow channel 11 thereon are extended along the width direction of the temperature regulating plate 1, so that the cooling medium can smoothly flow through the entire temperature regulating plate 1, thereby improving the cooling effect.

[0071] According to the temperature control assembly 100 of some embodiments of the present invention, the temperature regulating plate 1 is an extruded profile, and the medium flow channel 11 is formed integrally in the temperature regulating plate 1 by extrusion.

[0072] The extruded profile of the thermostatic plate 1 in the present application can be easily formed into various cross-sections, and the extruded profile has a low melting point, and does not consume a lot of energy during processing or forming, and the corresponding energy consumption is low, which reduces the mold and manufacturing costs. During the extrusion process, the material is subjected to pressure, and the density and strength are increased accordingly, thereby improving the firmness of the thermostatic plate 1.

[0073] At the same time, the extruded thermostatic plate 1 does not need to be welded to the upper plate and the lower plate, but the medium flow channel 11 is formed in one piece during the extrusion process, which can avoid the risk of deformation and cracks of the thermostatic plate 1 caused by uneven heating of the upper plate and the lower plate during the welding process.

[0074] In some optional embodiments, two adjacent sub-plates 10 are connected by friction stir welding.

[0075] Friction stir welding refers to the use of the heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the material to be welded. When the welding tool moves forward along the welding interface, the plasticized material flows from the front to the back of the welding tool under the action of the rotating friction force of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool.

[0076] In this way, the temperature of the welding process is relatively low, which can avoid the damage of the sub-board 10 caused by high temperature. The residual stress caused by welding is relatively low, and the sub-board 10 after welding is not easy to deform. The welding speed is fast, which can save a lot of welding time and reduce production time.

[0077] According to some embodiments of the present application, the temperature control assembly 100 is as follows: Figure 4 As shown, the temperature regulating plate 1 is integrally formed with a mounting channel 14 by extrusion.

[0078] The temperature control assembly 100 further includes a heating body 3, which is disposed in the mounting hole 14. The heating body 3 evenly heats the battery module 200, increases the heating speed of the battery module 200, ensures a balanced temperature rise of the temperature control plate 1, and makes the temperature control more accurate.

[0079] In some embodiments, there are multiple mounting holes 14, and each mounting hole 14 is independent of each other, and the heating body 3 can heat different areas of the battery module 200. In this way, not only the heating efficiency can be improved, but also the heating control can be more accurate.

[0080] By providing the heating body 3, the temperature control range of the temperature control component 100 is increased, and it can better adapt to temperature changes in different environments. For example, the battery system can be quickly preheated in a low temperature environment to improve the charging efficiency and driving range of the battery module 200. Another example: when the battery module 200 is started at a low temperature, the temperature regulating plate 1 can play a role in rapid preheating, providing a suitable temperature to ensure that the chemical reaction inside the battery module 200 proceeds normally, and improve the energy density and charging and discharging performance of the battery.

[0081] According to some embodiments of the present invention, the temperature control assembly 100 is as follows: Figure 8As shown, there are multiple flow diversion holes 22 on the manifold 2 and they are divided into at least two groups. A rubber ring 25 for sealing is also provided between the manifold 2 and the thermostatic plate 1 corresponding to each group of flow diversion holes 22. The rubber ring 25 is arranged around the flow diversion holes 22 in the same group. This arrangement can ensure the sealing effect between the manifold 2 and the thermostatic plate 1.

[0082] Further optionally, if Fig. 9 As shown, the surface of the manifold 2 facing the thermostat 1 is provided with a glue groove 23, and a glue ring 25 is provided in the glue groove 23. It is worth noting that the glue ring 25 is formed by pouring sealant into the glue groove 23, and the glue groove 23 can increase the adhesion area of ​​the sealant, and also make the sealant more evenly distributed between the manifold 2 and the thermostat 1, thereby improving the reliability of the seal. This is crucial to maintain the continuous flow of the cooling medium and prevent external impurities from entering the temperature control component 100, which helps to improve the reliability and stability of the entire temperature control component 100, thereby extending the service life of the battery module 200.

[0083] Alternatively, if Figure 4 , Figure 7 As shown, the temperature control plate 1 is provided with at least two mounting holes 14 for assembling the heating body 3, and medium flow channels 11 are provided adjacent to both sides of each mounting hole 14, and the diversion holes 22 corresponding to the medium flow channels 11 adjacent to both sides of each mounting hole 14 form a group.

[0084] Specifically, Figure 4 As shown, each group is indicated by a character X, and each group includes a mounting hole 14 and medium flow channels 11 arranged on both sides of the mounting hole 14. The cooling medium and the heating body 3 can be evenly distributed, the integration of the temperature regulating plate 1 is improved, and the structure is more compact.

[0085] Alternatively, if Figure 8-Figure 9 As shown, the manifold 2 is also provided with a plurality of flow-dividing holes 22, and a rubber ring 25 is provided between the manifold 2 and the temperature regulating plate 1, and each rubber ring 25 surrounds a group of flow-dividing holes 22. The elasticity of the rubber ring 25 can closely fit the gap between the manifold 2 and the temperature regulating plate 1 to form an effective seal, thereby increasing the sealing performance of the temperature control assembly 100 and preventing leakage of the cooling medium during the flow process.

[0086] In some embodiments, the manifold 2 is fixedly connected to the temperature regulating plate 1 by bolts. The bolt connection can avoid the probability of deformation caused by welding connection. Correspondingly, the stability of the end structure of the temperature regulating plate 1 is improved. Fig. 9 As shown, the collecting pipe 2 is provided with a threaded hole 24 .

[0087] Optionally, a connecting hole is provided on the temperature regulating plate 1. Bolts pass through the threaded holes 24 on the manifold 2 and the connecting holes on the temperature regulating plate 1 to fix the two.

[0088] In some embodiments, Fig. 9 As shown, each rubber ring 25 surrounds four flow-dividing holes 22 .

[0089] Two bolts are provided for each rubber ring 25, and the bolts are located outside the corresponding rubber ring 25 and are arranged on both sides of the rubber ring 25 along the length direction of the manifold 2. The threaded holes 24 corresponding to the bolts are also located on both sides of the rubber ring 25. Through the dual protection of the bolt connection and the rubber ring 25, the temperature control assembly 100 is highly stable and has reliable sealing.

[0090] In some optional embodiments, the mounting channel 14 is provided on the thermostat 1 along the length direction or the width direction of the thermostat 1. The heating body 3 covers the length direction or the width direction of the thermostat 1 as much as possible to ensure uniform heating of the battery module 200.

[0091] Optionally, the heating element 3 is rod-shaped and inserted into the installation hole 14. For example, the heating element 3 is a PTC heating element. The PTC heating element has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater, and has high safety performance. It is not easy to produce the phenomenon of "reddening" on the surface, reducing safety hazards.

[0092] According to some embodiments of the present invention, the temperature control assembly 100 is as follows: Figure 3 As shown, it also includes a heat insulation pad 4 connected to the temperature regulating plate 1, and the heat insulation pad 4 is arranged on the side of the temperature regulating plate 1 away from the manifold 2 to play the role of isolating heat conduction.

[0093] Optionally, the heat insulation pad 4 is adhered to the temperature regulating plate 1 .

[0094] According to a second aspect of the present invention, a battery pack 1000 is provided. Figure 1 As shown, it includes a box body 300, a battery module 200 and a temperature control component 100. The battery module 200 is arranged in the box body 300; the temperature control component 100 is the temperature control module of the first embodiment of the present application, and it is arranged in the box body 300, and the temperature control plate 1 is connected to the battery module 200.

[0095] According to the battery pack 1000 of the embodiment of the utility model, the temperature difference inside the battery pack 1000 can be effectively controlled, and the temperature uniformity of different parts of the battery module 200 can be improved. At the same time, the setting of the heating body 3 makes the preheating effect of the battery module 200 good, thereby improving the performance of the battery pack 1000 in a low temperature environment.

[0096] According to a vehicle of an embodiment of the third aspect of the utility model, the battery pack 1000 of the above embodiment is installed in the vehicle.

[0097] Below, refer to the attached Figure 1-Figure 9, describing a battery pack 1000 according to a specific embodiment of the present application.

[0098] Reference Figure 1 The battery pack 1000 includes a temperature control component 100 , a battery module 200 and a box body 300 .

[0099] Reference Figure 3 The temperature control assembly 100 includes a temperature regulating plate 1, a collecting pipe 2, a heating body 3 and a heat insulation pad 4.

[0100] Reference Figure 4-Figure 7 The temperature regulating plate 1 includes a plurality of sub-plates 10, and the plurality of sub-plates 10 are spliced ​​along the length direction of the temperature regulating plate 1, and two adjacent sub-plates 10 are connected by stir friction welding.

[0101] Each sub-plate 10 includes a medium flow channel 11 , a plurality of flow holes 13 and a mounting hole 14 .

[0102] The sub-plate 10 is an extruded profile, and the medium flow channel 11 and the mounting hole 14 are integrally formed in the sub-plate 10 by extrusion, and the medium flow channel 11 and the mounting hole 14 are extended along the width direction of the temperature regulating plate 1 .

[0103] The temperature control plate 1 includes a plurality of medium flow channels 11 extending in the width direction, and the plurality of medium flow channels 11 are arranged at intervals in the length direction. Each medium flow channel 11 has a flow hole 13 at both ends, and is connected to the flow diversion holes 22 of the two manifolds 2 .

[0104] The areas of the plurality of flow holes 13 are all different, and the shapes are all circular.

[0105] Reference Figure 2-Figure 3 There are two collecting pipes 2, and the two collecting pipes 2 are respectively arranged at two ends of the temperature regulating plate 1 along the width direction, and each collecting pipe 2 is extended along the length direction.

[0106] Reference Figure 8-Figure 9 The manifold 2 includes an interface 21 , a plurality of diversion holes 22 , a cavity, a glue groove 23 , a threaded hole 24 and a glue ring 25 .

[0107] The interface 21 and the plurality of diversion holes 22 are connected to the cavity, and the cavity is connected to the medium flow channel 11 .

[0108] The areas of the plurality of flow holes 13 are all different, and the shapes are all circular.

[0109] The area of ​​the flow holes 13 on the manifold 2 far from the interface 21 is larger than that of the flow holes 13 near the interface 21 , and the area of ​​the diverter holes 22 far from the interface 21 is larger than that of the diverter holes 22 near the interface 21 .

[0110] The plurality of flow holes 13 are connected to the plurality of flow diversion holes 22 in a one-to-one correspondence, and the diameters of the flow diversion holes 22 and the flow holes 13 are gradually increased.

[0111] The header 2 is an extruded profile.

[0112] Reference Figure 4 The medium flow channels 11 and the mounting holes 14 on the temperature regulating plate 1 are divided into multiple groups, each group includes one mounting hole 14 and two medium flow channels 11 , and the two medium flow channels 11 are respectively located on both sides of the mounting hole 14 .

[0113] Reference Fig. 9 The glue groove 23 is arranged on the surface of the manifold 2 facing the temperature regulating plate 1 .

[0114] The rubber ring 25 is disposed in the rubber groove 23 , and each rubber ring 25 surrounds four diversion holes 22 .

[0115] Each rubber ring 25 is also provided with threaded holes 24 on both sides along the length direction of the collecting pipe 2 .

[0116] Reference Figure 2-Figure 3 The heating body 3 is arranged in the mounting hole 14 .

[0117] Reference Figure 3 The heat insulation pad 4 is connected to the temperature regulating plate 1 and is arranged on the side of the temperature regulating plate 1 away from the collecting pipe 2.

[0118] Other components of the temperature control assembly 100 according to the embodiment of the utility model, such as the battery pack 1000 and the vehicle, are well known to those skilled in the art and will not be described in detail here.

[0119] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0120] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A temperature control component for a battery system, characterized in that: include: A temperature regulating plate, the temperature regulating plate is a heat conducting plate, at least two medium flow channels are arranged in the temperature regulating plate, and a flow hole is arranged on the temperature regulating plate corresponding to each of the medium flow channels; Two manifolds are respectively arranged on both sides of the temperature regulating plate, each manifold is provided with an interface, wherein the interface of one manifold is used for the inflow of the medium, and the interface of the other manifold is used for the outflow of the medium, a cavity is provided in the manifold, and at least two flow diversion holes connected with the cavity are provided on the manifold, and the flow diversion holes are connected with the flow holes in a one-to-one correspondence; Among them, the cross-sectional areas of at least two of the flow-through holes are different, and / or the cross-sectional areas of at least two of the flow-dividing holes are different.

2. The temperature control assembly according to claim 1, characterized in that: In the collecting pipe, the cross-sectional area of ​​the flow hole far from the interface is larger than the cross-sectional area of ​​the flow hole close to the interface, and / or the cross-sectional area of ​​the diversion hole far from the interface is larger than the cross-sectional area of ​​the diversion hole close to the interface.

3. The temperature control assembly according to claim 2, characterized in that: The interface is located at one end of the manifold, the diverter hole and the flow-through hole are both circular holes, and the diameters of the diverter hole and the flow-through hole gradually increase in a direction away from the interface.

4. The temperature control assembly according to claim 1, characterized in that: The temperature regulating plate comprises at least two sub-plates, each of which is provided with a medium flow channel; All the sub-plates are sequentially spliced ​​along a first direction, and each sub-plate and the medium flow channel thereon are extended along a second direction, and the second direction is perpendicular to the first direction; And / or, the header extends along the first direction, and the header is an extruded profile.

5. The temperature control assembly according to claim 1, characterized in that: The temperature regulating plate is an extruded profile, and the medium flow channel is formed integrally in the temperature regulating plate by extrusion.

6. The temperature control assembly according to claim 1, characterized in that: The temperature regulating plate is integrally formed with a mounting hole by extrusion, and the temperature control component further comprises a heating body, which is arranged in the mounting hole.

7. The temperature control assembly according to claim 1, characterized in that: There are multiple diversion holes on the manifold and they are divided into at least two groups. A rubber ring for sealing is provided between the manifold and the temperature regulating plate corresponding to each group of diversion holes. The rubber ring is arranged around the diversion holes in the same group. A glue groove is provided on the surface of the manifold facing the temperature regulating plate, and the glue ring is arranged in the glue groove; The collecting pipe is fixedly connected to the temperature regulating plate by bolts, and two bolts are provided for each rubber ring. The two bolts are located outside the corresponding rubber ring and are respectively arranged on both sides of the rubber ring along the length direction of the collecting pipe.

8. The temperature control assembly according to any one of claims 1 to 7, characterized in that: It also includes a heat insulation pad connected to the temperature regulating plate, and the heat insulation pad is arranged on a side of the temperature regulating plate away from the collecting pipe.

9. A battery pack, characterized in that: include: Box; A battery module, wherein the battery module is arranged in the box; According to any one of claims 1-8, the temperature control component is arranged in the box, and the temperature regulating plate is connected to the battery module.

10. A vehicle, characterized in that: The battery pack according to claim 9 is installed in the vehicle.

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