Battery module and automobile

Abstract

The utility model provides a battery module and an automobile, and relates to the technical field of automobile accessories. The battery module comprises a frame and multiple groups of battery cell units, the multiple groups of battery cell units are arranged in the frame side by side, cold plates are arranged between the adjacent battery cell units, the cold plates are used for cooling the battery cell units, heating pieces are arranged on two opposite sides of the cold plates, and the heating pieces are used for heating the battery cell units. According to the battery module and the automobile, the battery can be preheated, so that the endurance mileage of the automobile is indirectly prolonged.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a battery module and an automobile. Background Technology

[0002] Automotive battery modules are key components used to store electrical energy in electric vehicles or plug-in hybrid electric vehicles. A battery module consists of multiple batteries connected in series and parallel to provide the required voltage and capacity.

[0003] The battery module of the related technology includes a frame and multiple sets of battery cells. The multiple sets of battery cells are arranged side by side along the width of the frame, and each set of battery cells may include multiple cylindrical batteries.

[0004] However, when a car is used in low ambient temperatures (such as in winter), the ambient temperature will cause the battery temperature to drop, which will affect the car's driving range. Utility Model Content

[0005] This application provides a battery heating system, a battery module, and a vehicle to solve the technical problem that batteries in related technologies are affected by low ambient temperatures, thus impacting the vehicle's driving range.

[0006] On the one hand, this application provides a battery module, including a frame and multiple sets of battery cells. The multiple sets of battery cells are arranged side by side in the frame. A cold plate is provided between adjacent battery cells for cooling the battery cells. Heating elements are provided on opposite sides of the cold plates for heating the battery cells.

[0007] In some embodiments, the heating element includes a heating film, the heating film including a film body and a heating resistance wire, the film body being disposed on both opposite sides of the cold plate, and the heating resistance wire being disposed within the film body.

[0008] In some embodiments, the cell unit includes at least two sets of cell layers, each cell layer is arranged along the height direction of the frame, each set of cell layers includes multiple batteries, the heating resistance wire includes at least two heating sections, the multiple heating sections are electrically connected to each other, and the heating sections correspond one-to-one with the cell layers.

[0009] In some embodiments, each of the heating sections is arranged in a serpentine pattern, the serpentine heating sections being arranged along the length direction of a single set of the battery cells formed by the plurality of batteries.

[0010] In some embodiments, an electrical connection assembly is further included, which is disposed on the same side of the plurality of heating elements and is used to electrically connect the plurality of heating elements.

[0011] In some embodiments, the electrical connection assembly includes an electrical connection plate and electrical connection wires. Each membrane body is provided with an electrical connection plate, and both ends of the heating resistance wire extend into the electrical connection plate. Electrical connection wires are provided between adjacent electrical connection plates, and multiple electrical connection wires are used to connect multiple heating resistance wires in series.

[0012] In some embodiments, the electrical connection wire includes a first wire and a second wire, the first wire and the second wire being respectively disposed on adjacent electrical connection plates, and the electrical connection assembly further includes a connector disposed between the first wire and the second wire, the connector being used to detachably connect the first wire and the second wire.

[0013] In some embodiments, the connector includes a plug and a socket, the plug being disposed on the first wire and the socket being disposed on the second wire, the plug and the socket being used to plug into or disconnect from each other to electrically connect or disconnect the first wire and the second wire.

[0014] In some embodiments, a fastener is further included, which is disposed on at least one of the electrical connection wire, the plug, and the socket, and the fastener is used to secure at least one of the electrical connection wire, the plug, and the socket within the frame.

[0015] In some embodiments, the fastener includes a snap-fit ​​configured to engage or disengage with the frame to secure or detach at least one of the electrical connection wires, the plug, and the socket from or detach from the frame.

[0016] On the other hand, this application provides an automobile, including a vehicle body and a battery module disposed on the vehicle body.

[0017] This application provides a battery module and an automobile. The battery module provided by this application employs a heating element, which heats the battery cell unit. This allows the heating element to preheat the battery cell unit when the ambient temperature is low, such as in winter, improving the efficiency of the battery cell unit and thus extending the vehicle's driving range. By employing a cold plate, the battery cell unit can be cooled when its temperature is high during long-term use, preventing damage due to overheating. By placing the heating element on both sides of the cold plate, the space occupied by the heating element is reduced. Because the heating element is placed on the cold plate and is in direct contact with the battery cell unit, the heating efficiency of the heating element on the battery cell unit is improved. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 This is a schematic diagram of the battery module provided in an embodiment of this application;

[0020] Figure 2 for Figure 1 Partial structural diagram;

[0021] Figure 3 for Figure 1 A structural schematic diagram of the electrical connection components, cold plate, and heating element;

[0022] Figure 4 for Figure 3 Schematic diagram of the heating film structure;

[0023] Figure 5 for Figure 3 Schematic diagram of the electrical connection assembly and heating element;

[0024] Figure 6 for Figure 5 Enlarged view of part A in the image.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Framework;

[0027] 200. Cell unit; 210. Cell layer; 211. Battery;

[0028] 300. Electrical connection assembly; 310. Electrical connection plate; 320. Electrical connection wire; 321. First wire; 322. Second wire; 330. Connector; 331. Plug; 332. Socket;

[0029] 400. Cold plate; 410. Heating element; 411. Heating film; 412. Film body; 413. Heating resistance wire; 414. Heating section;

[0030] 500. Fastener; 510. Clip;

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] As described in the background section, the battery module of the related technology includes a frame and multiple sets of battery cells arranged side by side along the width of the frame. Each set of battery cells includes multiple cylindrical batteries. In order to prevent the cylindrical batteries from overheating and affecting battery performance during use, the battery module also includes a thermal management system. The thermal management system includes a cold plate, which is disposed between two adjacent sets of battery cells. A refrigerant channel is provided inside the cold plate. One end of the cold plate is connected to the refrigerant channel via an inlet pipe, and the other end is connected to the refrigerant channel via an outlet pipe. By transporting the refrigerant along the inlet pipe into the refrigerant channel, the cold plate cools the cylindrical batteries. The refrigerant that has exchanged heat with the cylindrical batteries is discharged along the outlet pipe.

[0034] However, when a car is used in low ambient temperatures, such as in winter, the ambient temperature will cause the battery temperature to be low. Low temperatures will reduce the activity of lithium ions inside the battery, and the battery's usable capacity will be reduced. This means that at the same voltage, the amount of electricity that the battery can release will be reduced, thus affecting the car's driving range.

[0035] To address the aforementioned technical problems, this application provides a battery module and a vehicle. When the vehicle is used in low ambient temperatures, such as in winter, the battery temperature is low. Power can be supplied to the heating resistance wires within multiple heating films via electrical connection wires, allowing multiple heating sections to heat multiple battery cells across multiple cell layers. This prevents low lithium-ion activity due to low battery temperature, thereby extending the vehicle's driving range after preheating. By employing a first wire, a second wire, a plug, and a socket, multiple heating resistance wires can be connected in series, and multiple heating films can be installed and removed, facilitating the installation and replacement of multiple heating films.

[0036] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0037] Combination Figures 1 to 6A battery module includes a frame 100 and multiple sets of battery cell units 200. The multiple sets of battery cell units 200 are arranged side by side in the frame 100. A cold plate 400 is provided between adjacent battery cell units 200 for cooling the battery cell units 200. A heating element 410 is provided on both sides of the cold plate 400 facing away from each other for heating the battery cell units 200.

[0038] In this embodiment, four sets of battery cell units 200 are provided, and two cold plates 400 are provided, with each pair of battery cell units 200 corresponding to one cold plate 400.

[0039] By adopting the above technical solution, and by using the heating element 410, the heating element 410 can heat the battery cell unit 200, thereby preheating the battery cell unit 200 when the ambient temperature is low, such as in winter, improving the utilization efficiency of the battery cell unit 200 and extending the vehicle's driving range. By using the cooling plate 400, when the battery cell unit 200 is used for a long time and the temperature is high, the cooling plate 400 can cool the battery cell unit 200 and prevent damage to the battery cell unit 200 due to overheating. By placing the heating element 410 on both sides of the cooling plate 400, the space occupied by the heating element 410 is reduced. Because the heating element 410 is placed on the cooling plate 400 and is in direct contact with the battery cell unit 200, the heating efficiency of the heating element 410 on the battery cell unit 200 is improved.

[0040] Combination Figures 3 to 6 The heating element 410 includes a heating film 411, which includes a film body 412 and a heating resistance wire 413. The film body 412 is provided on both opposite sides of the cold plate 400, and the heating resistance wire 413 is disposed inside the film body 412.

[0041] In this embodiment, the area of ​​the membrane 412 is the same as the area of ​​the cold plate 400; in other embodiments, the membrane 412 can be arranged to conform to the shape of the battery 211.

[0042] By adopting the above technical solution, the use of the membrane 412 can protect the heating resistance wire 413, thereby preventing damage to the battery cell 200 due to direct contact between the heating resistance wire 413 and the battery cell 200. By using the heating resistance wire 413, the heating resistance wire 413 can be energized to heat up, thereby heating the battery cell 200. The heating rate of the heating resistance wire 413 is fast, which improves the preheating efficiency of the battery cell 200.

[0043] Combination Figures 3 to 6The cell unit 200 includes at least two sets of cell layers 210. Each cell layer 210 is arranged along the height direction of the frame 100. Each set of cell layers 210 includes multiple batteries 211. The heating resistance wire 413 includes at least two heating sections 414. The multiple heating sections 414 are electrically connected to each other, and the heating sections 414 correspond one-to-one with the cell layers 210.

[0044] In this embodiment, each battery cell unit 200 includes two battery cell layers 210. The two battery cell layers 210 are arranged along the height direction of the frame 100. The batteries 211 of the two battery cell layers 210 are arranged in an alternating manner. Each battery 211 is cylindrical. One end of the cylindrical battery 211 abuts against the membrane 412, so that the heating resistance wire 413 can heat the end of the cylindrical battery 211. Each heating resistance wire 413 includes two heating sections 414. One heating section 414 corresponds to the upper battery cell layer 210 of the two battery cell layers 210, and the other heating section 414 corresponds to the lower battery cell layer 210 of the two battery cell layers 210.

[0045] By adopting the above technical solution, the number of batteries 211 is increased by including multiple battery cell layers 210 in the battery cell unit 200, so that the number of batteries 211 can further extend the driving range of the vehicle; by adopting the setting of multiple heating sections 414, a single heating resistance wire 413 can simultaneously heat multiple battery cell layers 210, thereby improving the heating efficiency of each battery cell unit 200.

[0046] Combination Figures 3 to 6 Each heating section 414 is arranged in a serpentine shape, and the serpentine heating section 414 is arranged along the length direction of a single cell layer 210 formed by multiple batteries 211.

[0047] By adopting the above technical solution, the heating section 414 is set in a serpentine shape, thereby increasing the contact area between the serpentine heating section 414 and the battery 211, which further improves the heating efficiency of the heating resistance wire 413 on the battery 211.

[0048] In other embodiments, the heating section 414 may include a plurality of circular heating elements, which are connected in series and correspond one-to-one with a plurality of batteries 211, so that the circular heating elements can also heat the batteries 211.

[0049] Combination Figures 3 to 6 The battery module also includes an electrical connection component 300, which is disposed on the same side of the plurality of heating elements 410 and is used to electrically connect the plurality of heating elements 410.

[0050] By adopting the above technical solution and by setting the electrical connection component 300, the electrical connection component 300 can electrically connect multiple heating elements 410, thereby facilitating the supply of power to the multiple heating elements 410; by setting the electrical connection component 300 on the same side of the multiple heating elements 410, it is not necessary to electrically connect the multiple heating elements 410 on both sides of the multiple heating elements 410, thereby reducing the space occupied by the electrical connection component 300 for the electrical connection of the multiple heating elements 410.

[0051] Combination Figures 3 to 6 The electrical connection assembly 300 includes an electrical connection plate 310 and an electrical connection wire 320. Each membrane 412 is provided with an electrical connection plate 310. The two ends of the heating resistance wire 413 extend into the electrical connection plate 310. An electrical connection wire 320 is provided between adjacent electrical connection plates 310. Multiple electrical connection wires 320 are used to connect multiple heating resistance wires 413 in series.

[0052] In this embodiment, four heating films 411 and four electrical connection plates 310 are provided. The electrical connection plates 310 are perpendicular to the cold plates 400. All four electrical connection plates 310 are located at the same end of the multiple cold plates 400. The electrical connection plates 310 are located on the upper part of the film body 412 and are rectangular in shape. Three electrical connection lines 320 are provided and are respectively located between adjacent electrical connection plates 310 among the four electrical connection plates 310.

[0053] By adopting the above technical solution, multiple heating resistance wires 413 can be connected in series using the electrical connection plate 310 and electrical connection wire 320, thereby enabling simultaneous power supply to multiple heating resistance wires 413 and improving the power supply efficiency of multiple heating resistance wires 413. The series connection of heating resistance wires 413 ensures that the current is evenly distributed in each segment of the heating resistance wire 413, thereby achieving uniform heating. By adjusting the total resistance value of the series connection of heating resistance wires 413, the current through the heating resistance wires 413 can be controlled, thereby controlling the heating temperature. The method of electrically connecting multiple heating resistance wires 413 through the electrical connection wire 320 has a simple structure and reduces the space occupied by the electrical connection wire 320, thereby providing installation space for other components of the battery module.

[0054] Combination Figures 3 to 6 The electrical connection wire 320 includes a first wire 321 and a second wire 322, which are respectively disposed on adjacent electrical connection plates 310. The electrical connection assembly 300 also includes a connector 330, which is disposed between the first wire 321 and the second wire 322 and is used to detachably connect the first wire 321 and the second wire 322.

[0055] By adopting the above technical solution and using the connector 330, the first wire 321 and the second wire 322 can be detachably connected. Since the first wire 321 and the second wire 322 are respectively set on adjacent electrical connection plates 310, when the first wire 321 and the second wire 322 are separated, the electrical connection plate 310 can drive the heating film 411 to be removed from the cold plate 400 for replacement, and facilitate the electrical connection of adjacent heating films 411, thereby improving the convenience of installing and removing the heating film 411.

[0056] Combination Figures 3 to 6 The connector 330 includes a plug 331 and a socket 332. The plug 331 is disposed on the first wire 321, and the socket 332 is disposed on the second wire 322. The plug 331 and the socket 332 are used to plug into or disconnect from each other to electrically connect or disconnect the first wire 321 and the second wire 322.

[0057] By adopting the above technical solution, and by using plug 331 and socket 332, the electrical connection or disconnection between the first wire 321 and the second wire 322 can be achieved by plugging and unplugging, which improves the convenience of connecting the first wire 321 and the second wire 322. Furthermore, when powering multiple heating films 411, multiple plugs 331 and multiple sockets 332 can be plugged in and matched, which improves the convenience of electrical connection of multiple heating films 411.

[0058] In other embodiments, bolts, tape, or pins may also be used to connect the first wire 321 and the second wire 322.

[0059] In this embodiment, the two ends of the multiple electrical connection plates 310 are connected to the power output terminal of the telecommunications module through the first wire 321, the second wire 322, the plug 331 and the socket 332, so that the battery module supplies power to the multiple heating films 411.

[0060] Combination Figures 3 to 6 The battery module also includes a fixing member 500, which is disposed on at least one of the electrical connection line 320, plug 331 and socket 332. The fixing member 500 is used to fix at least one of the electrical connection line 320, plug 331 and socket 332 within the frame 100. In this embodiment, the fixing member 500 is disposed on the socket 332.

[0061] By adopting the above technical solution and by using the fastener 500, the fastener 500 can fix the electrical connection wire 320, plug 331 and socket 332 within the frame 100, thereby preventing the electrical connection wire 320 from being damaged due to vehicle vibration, and preventing the plug 331 and socket 332 from being detached due to vehicle vibration, thus improving the safety of the electrical connection wire 320 and the safety of the plug 331 and socket 332 during use.

[0062] Combination Figures 3 to 6 The fastener 500 includes a snap fastener 510 configured to engage or disengage from the frame 100 to secure or detach at least one of the electrical connection wires 320, plugs 331, and sockets 332 from or detach from the frame 100.

[0063] In this embodiment, the buckle 510 is provided on the socket 332. The operator inserts the buckle 510 into the through hole on the frame 100 so that the buckle 510 is engaged with the through hole. When it is necessary to disengage the buckle 510 from the frame 100, the buckle 510 can be forcefully separated from the frame 100.

[0064] By adopting the above technical solution and using the buckle 510, the electrical connection cable 320, plug 331 and socket 332 can be fixed by engaging or disengaging the buckle 510 with the frame 100, thereby improving the convenience of fixing the electrical connection cable 320, plug 331 and socket 332.

[0065] This application also provides an automobile, including a vehicle body and a battery module of any of the above embodiments disposed on the vehicle body.

[0066] The specific structure of the battery module has been described in detail in the above embodiments, and will not be repeated here.

[0067] The automobile provided in this application embodiment, by setting up a battery module, when the automobile is used in a low ambient temperature, such as in winter, the temperature of the battery 211 is low. At this time, the temperature of the battery 211 is low. The heating resistance wires 413 in multiple heating films 411 can be powered through the electrical connection wires 320, so that multiple heating sections 414 can heat multiple batteries 211 in multiple sets of cell layers 210, preventing the low lithium-ion activity due to the low temperature of the battery 211, thereby extending the driving range of the automobile after the preheating of the battery 211. By using the arrangement of the first wire 321, the second wire 322, the plug 331 and the socket 332, multiple heating resistance wires 413 can be connected in series, and multiple heating films 411 can be installed and removed, thereby facilitating the installation and replacement of multiple heating films 411.

[0068] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0069] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery module, characterized in that, The device includes a frame and multiple sets of battery cells. The multiple sets of battery cells are arranged side by side within the frame. A cold plate is provided between adjacent battery cells for cooling the battery cells. Heating elements are provided on opposite sides of the cold plates for heating the battery cells.

2. The battery module according to claim 1, characterized in that, The heating element includes a heating film, which includes a film body and a heating resistance wire. The film body is disposed on both opposite sides of the cold plate, and the heating resistance wire is disposed within the film body.

3. The battery module according to claim 2, characterized in that, The cell unit includes at least two sets of cell layers, each set of cell layers is arranged along the height direction of the frame, each set of cell layers includes multiple batteries, the heating resistance wire includes at least two heating sections, the multiple heating sections are electrically connected to each other, and the heating sections correspond one-to-one with the cell layers.

4. The battery module according to claim 3, characterized in that, Each of the heating sections is arranged in a serpentine pattern, and the serpentine heating sections are arranged along the length direction of a single group of the battery cells formed by the plurality of batteries.

5. The battery module according to any one of claims 2-4, characterized in that, It also includes an electrical connection assembly disposed on the same side of the plurality of heating elements, the electrical connection assembly being used to electrically connect the plurality of heating elements.

6. The battery module according to claim 5, characterized in that, The electrical connection assembly includes an electrical connection plate and electrical connection wires. Each membrane body is provided with an electrical connection plate. Both ends of the heating resistance wire extend into the electrical connection plate. Electrical connection wires are provided between adjacent electrical connection plates. Multiple electrical connection wires are used to connect multiple heating resistance wires in series.

7. The battery module according to claim 6, characterized in that, The electrical connection wire includes a first wire and a second wire, which are respectively disposed on adjacent electrical connection plates. The electrical connection assembly also includes a connector disposed between the first wire and the second wire, which is used to detachably connect the first wire and the second wire.

8. The battery module according to claim 7, characterized in that, The connector includes a plug and a socket. The plug is disposed on the first wire, and the socket is disposed on the second wire. The plug and the socket are used to plug into or disconnect from each other to electrically connect or disconnect the first wire and the second wire.

9. The battery module according to claim 8, characterized in that, It also includes a fastener disposed on at least one of the electrical connection wire, the plug, and the socket, the fastener being used to secure at least one of the electrical connection wire, the plug, and the socket within the frame.

10. A car, characterized in that, It includes a vehicle body and a battery module disposed on the vehicle body as described in any one of claims 1-9.

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