Battery system and vehicle with same

Abstract

The utility model provides a battery system and a vehicle with the same. The battery system comprises a battery module, and heat dissipation assemblies are arranged on the two sides of the battery module; wherein the heat dissipation assembly comprises a plurality of heat dissipation pipes, the heat dissipation pipes are used for circulating cooling liquid, the plurality of heat dissipation pipes are arranged along the height direction of the battery module, and the end parts of the plurality of heat dissipation pipes of the same heat dissipation assembly are arranged in a mutually communicated manner. According to the technical scheme, the cooling liquid circulating in the heat dissipation pipes can take away heat generated by the battery module in the high-magnification charging and discharging process, the heat dissipation pipes are arranged on the two sides of the battery module, it is ensured that the cooling liquid can be evenly distributed on the two sides of the battery module, the heat dissipation efficiency is improved, and the service life of the battery module is prolonged. Therefore, when the battery module works at a high load, the temperature can be effectively controlled, and battery performance reduction and potential safety hazards caused by overheating are avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery protection technology, and more specifically, to a battery system and a vehicle having the same. Background Technology

[0002] As market demand for electric vehicles in terms of driving range and charging / discharging rate gradually increases, and given that current single-cell battery technology is insufficient to meet these demands, more series-parallel modules are needed to satisfy these requirements. As the number of these series-parallel modules increases, internal heat generation becomes more pronounced, leading to a gradual increase in the demand for cooling systems inside the enclosure.

[0003] In current industry applications, automakers are pursuing high-rate, fast-charging and discharging, and large-module power battery packs, matching them with larger capacity cells, higher charging rates, and using busbars to connect them in series and parallel. Larger capacity cells and more series and parallel connections mean that the heat generated by the cells gradually increases. When the heat generated by the cells is too great and cannot be dissipated on its own, it will lead to a decline in battery performance and abnormal battery operation. Utility Model Content

[0004] The main objective of this invention is to provide a battery system and a vehicle having the same, in order to solve the problem of poor battery heat dissipation leading to decreased battery performance in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a battery system is provided, comprising: a battery module, wherein heat dissipation components are provided on both sides of the battery module; wherein the heat dissipation components include multiple heat dissipation pipes for circulating coolant, the multiple heat dissipation pipes are arranged along the height direction of the battery module, and the ends of the multiple heat dissipation pipes of the same heat dissipation component are interconnected.

[0006] Furthermore, a thermally conductive film is provided between the heat dissipation component and the battery module.

[0007] Furthermore, the battery system also includes a bottom liquid cooling plate, which is disposed on one side of the battery module and is connected to the heat dissipation component. The bottom liquid cooling plate is used to store coolant.

[0008] Furthermore, the battery module includes multiple battery cells stacked along the thickness direction of the individual cells, heat dissipation pipes extending along the thickness direction of the individual cells, and a bottom liquid cooling plate disposed on one side of the height direction of the individual cells.

[0009] Furthermore, there are multiple heat dissipation components, with at least two adjacent heat dissipation components being interconnected.

[0010] Furthermore, any two adjacent heat dissipation components are interconnected to form a serpentine cooling channel.

[0011] Furthermore, the bottom liquid cooling plate is connected to the heat dissipation components located at both ends of the serpentine cooling channel, and a water pump is provided at the outlet end of the bottom liquid cooling plate.

[0012] Furthermore, the battery system also includes a battery housing, in which the battery modules and bottom liquid cooling plate are housed, and the bottom liquid cooling plate is located at the bottom of the battery housing.

[0013] Furthermore, the bottom liquid cooling plate is detachably connected to the battery housing.

[0014] According to another aspect of the present invention, a vehicle is provided, the vehicle having a battery system, the battery system being the aforementioned battery system.

[0015] By applying the technical solution of this utility model, the coolant flowing inside the heat dissipation pipe can carry away the heat generated by the battery module during high-rate charging and discharging. By setting multiple heat dissipation pipes on both sides of the battery module, it is ensured that the coolant can be evenly distributed on both sides of the battery module, which improves the heat dissipation efficiency. This allows the temperature of the battery module to be effectively controlled when it is working under high load, avoiding battery performance degradation and safety hazards caused by overheating. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of the battery system according to the present invention is shown;

[0018] Figure 2 A schematic diagram of an embodiment of a heat dissipation assembly for a battery system according to the present invention is shown.

[0019] The above figures include the following reference numerals:

[0020] 1. Battery module; 10. Individual battery cell;

[0021] 2. Heat dissipation components; 21. Heat pipes; 22. Five-way connector;

[0022] 3. Thermal conductive film;

[0023] 4. Bottom liquid cooling plate;

[0024] 5. Water pump;

[0025] 6. Connect the hose. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0030] Combination Figures 1 to 2 As shown, a battery system is provided according to a specific embodiment of this application.

[0031] The battery system includes a battery module 1, and heat dissipation components 2 are provided on both sides of the battery module 1. The heat dissipation components 2 include multiple heat dissipation pipes 21, which are used to circulate coolant. The multiple heat dissipation pipes 21 are arranged along the height direction of the battery module 1, and the ends of the multiple heat dissipation pipes 21 of the same heat dissipation component 2 are interconnected.

[0032] By applying the technical solution of this embodiment, the coolant flowing inside the heat dissipation pipe 21 can carry away the heat generated by the battery module 1 during high-rate charging and discharging. By setting multiple heat dissipation pipes 21 on both sides of the battery module 1, it is ensured that the coolant can be evenly distributed on both sides of the battery module 1, which improves the heat dissipation efficiency. This allows the temperature of the battery module 1 to be effectively controlled when it is working under high load, avoiding battery performance degradation and safety hazards caused by overheating.

[0033] In one exemplary embodiment of this application, the heat pipe 21 is made of copper. Copper is a highly ductile metal material with good plasticity, electrical conductivity, and thermal conductivity. It is also easy to process and shape. Copper is not easily damaged by extrusion deformation, making it suitable for manufacturing heat pipes 21 between modules.

[0034] It should be understood that the number and diameter of the heat dissipation pipes 21 in the heat dissipation assembly 2 can be adjusted according to actual needs. For example, the number of heat dissipation pipes 21 can be adjusted according to the height of the battery module 1 and the diameter of the selected heat dissipation pipes 21 so that the height of the heat dissipation assembly 2 is close to or flush with the height of the battery module 1. Adjacent heat dissipation pipes 21 can be connected and fixed by adhesive bonding or welding.

[0035] Furthermore, a thermally conductive film 3 is provided between the heat dissipation component 2 and the battery module 1. That is to say, the heat dissipation component 2 is fixed between the battery module 1 by the thermally conductive film 3.

[0036] In this embodiment, the use of thermally conductive film 3 not only enhances the thermal contact between heat dissipation component 2 and battery module 1, but also adapts to the manufacturing tolerance and installation error requirements of battery module 1 through the compressibility of thermally conductive film 3, protects the heat dissipation copper pipe from damage due to excessive pressure, and further improves the uniformity and efficiency of heat dissipation.

[0037] Furthermore, the battery system also includes a bottom liquid cooling plate 4, which is disposed on one side of the battery module 1 and is connected to the heat dissipation component 2. The bottom liquid cooling plate 4 is used to store coolant.

[0038] In this embodiment, the coolant is directly drawn from the bottom liquid cooling plate 4, eliminating the complex process of adding a liquid cooler inside the battery system, simplifying the structure of the battery system, reducing costs, and improving the response speed and control accuracy of the battery cooling process.

[0039] Specifically, the battery module 1 includes a plurality of battery cells 10 stacked along the thickness direction of the individual battery cells 10, a heat dissipation pipe 21 extending along the thickness direction of the individual battery cells 10, and a bottom liquid cooling plate 4 disposed on one side of the height direction of the individual battery cells 10. This arrangement ensures that the heat dissipation pipe 21 extends along the thickness direction of the individual battery cells 10 (i.e.,...). Figure 1The bottom liquid cooling plate 4 extends in the F2 direction (as shown in the image), ensuring that the coolant can contact multiple individual battery cells 10 during flow, thus improving heat dissipation efficiency. The bottom liquid cooling plate 4 is positioned along the height of the individual battery cells 10 (i.e., in the F2 direction). Figure 1 On one side of the F1 direction (in the middle), it facilitates the circulation of coolant and the uniform distribution of heat.

[0040] Furthermore, there are multiple heat dissipation components 2, with at least two adjacent heat dissipation components 2 interconnected. The interconnection of multiple heat dissipation components 2 forms a continuous cooling path, improving the flow efficiency of the coolant and the heat dissipation effect.

[0041] It should be noted that when there are more than two heat dissipation components 2 in the battery system, only some of the heat dissipation components 2 can be connected. For example, when there are four heat dissipation components 2 in the battery system, they can be grouped into two groups, with the heat dissipation components 2 in each group connected, but the two groups of heat dissipation components 2 not connected. This allows coolant to be introduced into any group of heat dissipation components 2 as needed to achieve point-to-point cooling of the battery module 1.

[0042] Preferably, any two adjacent heat dissipation components 2 are interconnected to form a serpentine cooling channel. This serpentine cooling channel design optimizes the flow path of the coolant within the battery module 1, ensuring that the coolant evenly covers all battery cells, preventing localized overheating, extending battery life, and improving the overall performance of the battery system.

[0043] Furthermore, the bottom liquid cooling plate 4 is connected to the heat dissipation components 2 located at both ends of the serpentine cooling channel, and a water pump 5 is installed at the outlet end of the bottom liquid cooling plate 4. The water pump 5 can control the flow rate of the coolant, ensuring the circulation of the coolant within the serpentine cooling channel, thereby improving heat dissipation efficiency and the response speed of the cooling system. Moreover, connecting the bottom liquid cooling plate 4 to the heat dissipation components 2 at both ends of the serpentine cooling channel also makes the coolant supply to all heat dissipation components 2 simpler and more efficient.

[0044] Furthermore, the battery system also includes a battery housing, in which the battery module 1 and the bottom liquid cooling plate 4 are both housed, with the bottom liquid cooling plate 4 located at the bottom of the battery housing. Integrating the battery module 1 and the bottom liquid cooling plate 4 into the battery housing improves the compactness and overall integrity of the battery system. The bottom liquid cooling plate 4's location at the bottom of the battery housing facilitates the circulation of coolant and the uniform distribution of heat.

[0045] Preferably, the bottom liquid cooling plate 4 is detachably connected to the battery box.

[0046] In this embodiment, the detachable connection between the bottom liquid cooling plate 4 and the battery housing facilitates the disassembly, maintenance, and replacement of the bottom liquid cooling plate 4, thereby simplifying battery system maintenance and upgrades, reducing maintenance costs, and improving system flexibility and scalability. Specifically, the detachable connection methods include various connection methods such as bolt and nut connection, screw connection, magnetic connection, and snap-fit ​​connection.

[0047] This application also provides a preferred embodiment of a battery system. Specifically, the battery system includes a battery module 1, a heat dissipation assembly 2, a thermally conductive sheet 3, a bottom liquid cooling plate 4, a water pump 5, and a connecting hose 6.

[0048] The heat dissipation assembly 2 includes four heat dissipation pipes 21 and five-way pipes 22 disposed on both sides of the heat dissipation pipes 21. The heat dissipation pipes 21 are made of copper and can be bonded together with the five-way pipes 22 to form the heat dissipation assembly 2. Thermal conductive film 3 is attached to both sides of the battery module 1, which can effectively fix the heat dissipation assembly 2. At the same time, the compressibility of the thermal conductive film 3 can protect the heat dissipation pipes 21 from being over-compressed and damaged. Adjacent five-way pipes 22 are connected by connecting hoses 6. A water pump 5 is connected to the inlet of the connecting hoses 6. By setting the water pump 5, coolant can be directly drawn from the bottom liquid cooling plate 4 of the lower layer and the flow rate and flow of coolant entering the heat dissipation assembly 2 can be controlled.

[0049] Preferably, the interfaces of the five-way pipe 22 are all pagoda heads, which can be connected to 6-8mm water pipes and fixed with hose clamps to effectively avoid the problem of pipe leakage.

[0050] The battery cooling principle in this embodiment is as follows: The battery module 1 is mounted on the bottom liquid cooling plate 4. When the battery module 1 is working, the current flowing through it generates a large amount of heat, which needs to be dissipated through the heat dissipation component 2. A thermally conductive adhesive sheet 3 is attached between the battery module 1 and the heat dissipation component 2. The heat dissipation component 2 is attached to the middle of the battery module 1 through the thermally conductive adhesive sheet 3, transferring the heat to the heat dissipation component 2.

[0051] In this embodiment, the battery system solves the problem of temperature rise and shutdown during high-rate charging and discharging by setting the heat dissipation component 2, effectively reducing the temperature of the battery module; by setting the thermal conductive film 3, the contact surface between the thermal conductive film 3 and the module is more uniform, and the heat dissipation effect is better, solving the problem of uneven installation of the heat dissipation component 2 and difficulty in spreading it evenly on the battery cell; by allowing the coolant to be directly extracted from the bottom liquid cooling plate 4, the operation process of adding a liquid cooler inside the battery system is eliminated, making the heat dissipation process of the battery system more efficient and convenient.

[0052] According to another specific embodiment of this application, a vehicle is provided, the vehicle having a battery system, the battery system being the battery system in the above embodiment.

[0053] The vehicle described in this application effectively reduces the temperature rise of the battery cells during high-rate charging and discharging by adding a heat dissipation component 2 to the gaps in the battery module 1, removes the heat from the battery cells, and effectively avoids the problem of the battery system stopping working due to excessive temperature. This makes the vehicle's electrical equipment work more stably and improves the vehicle's safety.

[0054] The vehicle in this embodiment can be a new energy vehicle such as an electric car or an electric bus.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery system, characterized in that, include: Battery module (1), with heat dissipation components (2) provided on both sides of the battery module (1); The heat dissipation component (2) includes a plurality of heat dissipation pipes (21), which are used to circulate coolant. The plurality of heat dissipation pipes (21) are arranged along the height direction of the battery module (1), and the ends of the plurality of heat dissipation pipes (21) of the same heat dissipation component (2) are interconnected.

2. The battery system according to claim 1, characterized in that, A thermally conductive film (3) is provided between the heat dissipation component (2) and the battery module (1).

3. The battery system according to claim 1, characterized in that, The battery system also includes: Bottom liquid cooling plate (4) is disposed on one side of the battery module (1) and is connected to the heat dissipation component (2). The bottom liquid cooling plate (4) is used to store the coolant.

4. The battery system according to claim 3, characterized in that, The battery module (1) includes a plurality of battery cells (10) stacked along the thickness direction of the battery cell (10), the heat dissipation pipe (21) extends along the thickness direction of the battery cell (10), and the bottom liquid cooling plate (4) is disposed on one side of the battery cell (10) in the height direction.

5. The battery system according to claim 3, characterized in that, There are multiple heat dissipation components (2), and at least two adjacent heat dissipation components (2) are interconnected.

6. The battery system according to claim 5, characterized in that, Any two adjacent heat dissipation components (2) are connected to each other to form a serpentine cooling channel.

7. The battery system according to claim 6, characterized in that, The bottom liquid cooling plate (4) is connected to the heat dissipation components (2) located at both ends of the serpentine cooling channel, and a water pump (5) is provided at the outlet end of the bottom liquid cooling plate (4).

8. The battery system according to claim 3, characterized in that, The battery system also includes a battery housing, in which the battery module (1) and the bottom liquid cooling plate (4) are both disposed, and the bottom liquid cooling plate (4) is disposed at the bottom of the battery housing.

9. The battery system according to claim 8, characterized in that, The bottom liquid cooling plate (4) is detachably connected to the battery box.

10. A vehicle, characterized in that, The vehicle has a battery system, which is the battery system according to any one of claims 1-9.

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