Battery pack with heating function

Abstract

The utility model discloses a battery pack with a heating function, which comprises a battery pack body, at least one storage box, at least one ultrasonic transducer and an ultrasonic generator, the battery pack body comprises a shell and a plurality of modules, and the modules are fixedly connected in the shell; a heat transfer medium is contained in the storage box, and the outer wall of the storage box is fixedly connected with the bottom surface of the bottom plate of the shell; the ultrasonic transducer is fixedly inserted into the storage box; the ultrasonic generator is fixedly connected to the bottom surface of the bottom plate and is electrically connected with the ultrasonic transducer; the ultrasonic generator is electrically connected with the power supply device. The heat transfer medium in the storage box is heated by utilizing the cavitation effect of ultrasonic waves and the accompanying heat effect, so that the heat of the heat transfer medium is transferred to the module, and the charging and discharging problems of the battery pack under the extremely cold condition are effectively solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular, to a battery pack with a heating function. Background Art

[0002] The working environment temperature of electric vehicle battery packs is usually 0-40 degrees. When in extremely cold conditions, lithium ions are prone to condensation in the electrolyte and move slowly, causing the lithium-ion battery to be unable to charge and discharge normally, and the overall performance to decline. In the prior art, there is a heat exchange system in the battery pack for heating the battery pack. The first method is to heat the coolant in the heat exchange system through PTC. The heated coolant circulates in the heat exchange system through the vehicle's circulation pump to transfer heat to the modules in the battery pack; the second method is to heat the cold air in the heat exchange system through PTC. The heated air circulates in the heat exchange system through the vehicle's circulation pump to transfer heat to the modules in the power battery pack. Both methods have the problem of limited flow path of the heat transfer medium, resulting in inconsistent temperature gradient and charging capacity of the battery cells of each module. Utility Model Content

[0003] To solve at least one aspect of the above problems, the utility model provides a battery pack with a heating function, including a battery pack body, the battery pack body including a shell and a plurality of modules, the plurality of modules are fixedly connected in the shell, and also includes at least one storage box, at least one ultrasonic transducer and an ultrasonic generator; the storage box contains a heat transfer medium, the outer wall of the storage box is fixedly connected to the bottom surface of the bottom plate of the shell; the ultrasonic transducer is fixedly inserted on the storage box; the ultrasonic generator is fixedly connected to the bottom surface of the bottom plate and electrically connected to the ultrasonic transducer; the ultrasonic generator is electrically connected to the power supply device.

[0004] Through the above technical solution, through the operation of the ultrasonic generator and the ultrasonic transducer, the cavitation effect of ultrasound and its accompanying thermal effect are utilized to heat up the heat transfer medium in the storage box, thereby transferring its heat to the module for heating the module, effectively solving the problem of charging and discharging the battery pack in cold climate environments.

[0005] Preferably, it also includes at least one temperature sensor, which is fixedly inserted on the storage box and used to detect the temperature of the heat transfer medium in the storage box; the battery pack also includes a management system, which includes a control unit and a receiving unit, the receiving unit is electrically connected to the temperature sensor, and the control unit is electrically connected to the ultrasonic generator, so that the management system controls the operation of the ultrasonic generator according to the signal of the temperature sensor. Through the above technical solution, the temperature sensor detects the temperature of the heat transfer medium in the storage box and transmits the information to the management system. When the management system determines that the temperature is lower than the preset value, the management system controls the ultrasonic generator to start running; when the management system determines that the temperature is higher than the preset value, the management system controls the ultrasonic generator to stop running.

[0006] Preferably, there are multiple storage boxes, which are evenly distributed at the bottom end of the bottom plate; there are multiple ultrasonic transducers and temperature sensors, the number of ultrasonic transducers and the number of temperature sensors are equal to the number of storage boxes, the multiple ultrasonic transducers and the multiple temperature sensors are respectively connected to the multiple storage boxes, the multiple ultrasonic transducers are electrically connected to the ultrasonic generator, and the multiple temperature sensors are electrically connected to the management system of the battery pack.

[0007] Preferably, the number of the storage boxes is equal to the number of modules, and the storage boxes correspond to the modules one by one, and the storage boxes are respectively arranged directly below the modules. Through the above technical solution, the heat generated by the heat transfer medium in each storage box is transferred to the corresponding module, so that the temperature gradient and charging capacity of the battery core of each module are consistent.

[0008] Preferably, the size and shape of the surface of the storage box close to the bottom plate match the size and shape of the surface of the module close to the bottom plate. Through the above technical solution, the uniformity of heating of each module is guaranteed.

[0009] Preferably, a cooling tube in a wave-shaped distribution is fixedly connected to the bottom surface of the bottom plate, and a plurality of storage boxes are respectively arranged in the wave troughs of the cooling tube. Through the above technical solution, an arrangement of the cooling tube and the storage box is disclosed, which helps to reduce the occupied space.

[0010] Preferably, each storage box is provided with a filling port, and a plugging cover is installed on the filling port.

[0011] Preferably, the power supply device is a mobile power source or a battery pack body.

[0012] Preferably, the heat transfer medium is silicone oil.

[0013] The battery pack with heating function of the utility model has the following beneficial effects:

[0014] By arranging a storage box containing a heat transfer medium and an ultrasonic generator under the bottom plate of the shell where the module is installed, and arranging an ultrasonic transducer on the storage box, the cavitation effect of ultrasound and its accompanying thermal effect are used to heat the heat transfer medium in the storage box, thereby transferring its heat to the module for heating the module, effectively solving the charging and discharging problems of the battery pack in cold climate environments; by designing the number of storage boxes to be equal to the number of modules and corresponding to the modules one by one, the heat generated by the heat transfer medium in each storage box is transferred to the corresponding module, so that the temperature gradient and charging capacity of the battery cell of each module are consistent; by arranging a temperature sensor on the storage box, the temperature of the heat transfer medium in the storage box is monitored, and the operation of the ultrasonic generator is controlled by a management system; the technical solution of the present application has a simple structure, does not need to change the internal structure of the module, and is easy, simple and reliable to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0016] Figure 1 A schematic diagram of the structure of a battery pack with a heating function according to an embodiment of the utility model is shown;

[0017] Figure 2 A partial bottom view of a battery pack with a heating function according to an embodiment of the utility model is shown.

[0018] Description of reference numerals:

[0019] 1. Base plate; 2. Module; 3. Storage box; 31. Plug cover; 4. Ultrasonic transducer; 5. Ultrasonic generator; 6. Temperature sensor; 7. Cooling pipe. DETAILED DESCRIPTION

[0020] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0021] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0022] In order to at least partially solve one or more of the above-mentioned problems and other potential problems, an embodiment of the present disclosure proposes a battery pack with a heating function, including a battery pack body, the battery pack body including a shell and a plurality of modules 2, the plurality of modules 2 are fixedly connected in the shell, and also includes at least one storage box 3, at least one ultrasonic transducer 4 and an ultrasonic generator 5; the storage box 3 contains a heat transfer medium, and the outer wall of the storage box 3 is fixedly connected to the bottom surface of the bottom plate 1 of the shell; the ultrasonic transducer 4 is fixedly inserted on the storage box 3; the ultrasonic generator 5 is fixedly connected to the bottom surface of the bottom plate 1 and is electrically connected to the ultrasonic transducer 4; the ultrasonic generator 5 is electrically connected to the power supply device.

[0023] In some embodiments, the storage box 3 is provided with one, the size of the surface of the storage box 3 close to the bottom plate 1 is greater than or equal to the sum of the sizes of the surfaces of the modules 2 close to the bottom plate 1, and the outer wall of the storage box 3 is fixedly connected to the bottom surface of the bottom plate 1 of the shell; in other embodiments, the storage box 3 is provided with multiple, and the multiple storage boxes 3 are evenly distributed at the bottom end of the bottom plate 1. Preferably, in this embodiment, Figure 1 and Figure 2 As shown, the number of storage boxes 3 is equal to the number of modules 2, and a plurality of storage boxes 3 correspond to a plurality of modules 2 one by one. The size and shape of the surface of the storage box 3 close to the base plate 1 are preferably matched with the size and shape of the surface of the module 2 close to the base plate 1. A plurality of storage boxes 3 are respectively arranged directly below a plurality of modules 2, and the outer wall of the storage box 3 is fixedly connected to the bottom surface of the base plate 1 of the shell; a filling port is opened on each storage box 3, and a plugging cover 31 is installed on the filling port; a cooling pipe 7 distributed in a wave shape is fixedly connected to the bottom surface of the base plate 1, and a plurality of storage boxes 3 are respectively arranged in the troughs of the cooling pipe 7; a heat transfer medium is contained in the storage box 3, and preferably, the heat transfer medium is silicone oil.

[0024] When one storage box 3 is provided, one ultrasonic transducer 4 is provided, and the ultrasonic transducer 4 is fixedly inserted on the storage box 3; preferably, in this embodiment, a plurality of ultrasonic transducers 4 are provided, the number of ultrasonic transducers 4 is equal to the number of storage boxes 3, and the plurality of ultrasonic transducers 4 are respectively connected to the plurality of storage boxes 3.

[0025] The ultrasonic generator 5 is fixedly connected to the bottom surface of the base plate 1. When one ultrasonic transducer 4 is provided, the ultrasonic transducer 4 is electrically connected to the ultrasonic generator 5; when multiple ultrasonic transducers 4 are provided, multiple ultrasonic transducers 4 are electrically connected to the ultrasonic generator 5; the ultrasonic generator 5 is electrically connected to the power supply device, and preferably, the power supply device is a mobile power supply or a battery pack body.

[0026] Preferably, the battery pack of the present application also includes at least one temperature sensor 6 for detecting the temperature of the heat transfer medium in the storage box 3; the battery pack includes a management system, and the management system includes a control unit and a receiving unit; when there is one storage box 3, one temperature sensor 6 is provided, the temperature sensor 6 is fixedly inserted on the storage box 3, and the temperature sensor 6 is electrically connected to the receiving unit; when there are multiple storage boxes 3, there are multiple temperature sensors 6, the number of temperature sensors 6 is equal to the number of storage boxes 3, the multiple temperature sensors 6 are respectively connected to the multiple storage boxes 3, and the multiple temperature sensors 6 are all electrically connected to the receiving unit; the ultrasonic generator 5 is electrically connected to the control unit, so that the management system controls the operation of the ultrasonic generator 5 according to the signal of the temperature sensor 6, wherein the temperature sensor detects the temperature and transmits the signal to the receiving element, and the receiving element transmits the information to the control element, and the control element controls the electrical element to start or stop the operating state according to the signal, which is achievable in the prior art.

[0027] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. A battery pack with a heating function, comprising a battery pack body, the battery pack body comprising a shell and a plurality of modules (2), the plurality of modules (2) being fixedly connected in the shell, characterized in that: It also includes at least one storage box (3), at least one ultrasonic transducer (4) and an ultrasonic generator (5); The storage box (3) contains a heat transfer medium, and the outer wall of the storage box (3) is fixedly connected to the bottom surface of the bottom plate (1) of the shell; The ultrasonic transducer (4) is fixedly inserted into the storage box (3); The ultrasonic generator (5) is fixedly connected to the bottom surface of the bottom plate (1) and is electrically connected to the ultrasonic transducer (4); the ultrasonic generator (5) is electrically connected to the power supply device.

2. A battery pack with heating function according to claim 1, characterized in that: The battery pack also includes at least one temperature sensor (6), which is fixedly inserted into the storage box (3) and is used to detect the temperature of the heat transfer medium in the storage box (3); the battery pack also includes a management system, which includes a control unit and a receiving unit, the receiving unit is electrically connected to the temperature sensor (6), and the control unit is electrically connected to the ultrasonic generator (5), so that the management system controls the operation of the ultrasonic generator (5) according to the signal of the temperature sensor (6).

3. A battery pack with heating function according to claim 2, characterized in that: The storage boxes (3) are provided in plurality, and the plurality of storage boxes (3) are evenly distributed at the bottom end of the bottom plate (1); the ultrasonic transducers (4) and the temperature sensors (6) are provided in plurality, and the number of the ultrasonic transducers (4) and the number of the temperature sensors (6) are both equal to the number of the storage boxes (3); the plurality of ultrasonic transducers (4) and the plurality of temperature sensors (6) are respectively connected to the plurality of storage boxes (3); the plurality of ultrasonic transducers (4) are electrically connected to the ultrasonic generator (5); and the plurality of temperature sensors (6) are electrically connected to the management system of the battery pack.

4. A battery pack with heating function according to claim 3, characterized in that: The number of the storage boxes (3) is equal to the number of the modules (2); a plurality of storage boxes (3) corresponds to a plurality of modules (2) on a one-to-one basis; and a plurality of storage boxes (3) are respectively arranged directly below a plurality of modules (2).

5. A battery pack with heating function according to claim 4, characterized in that: The size and shape of the surface of the storage box (3) close to the bottom plate (1) match the size and shape of the surface of the module (2) close to the bottom plate (1).

6. A battery pack with heating function according to any one of claims 3 to 5, characterized in that: A cooling pipe (7) distributed in a wave shape is fixedly connected to the bottom surface of the bottom plate (1), and a plurality of storage boxes (3) are respectively arranged in the wave valleys of the cooling pipe (7).

7. A battery pack with heating function according to any one of claims 1 to 5, characterized in that: Each storage box (3) is provided with a filling port, and a blocking cover (31) is installed on the filling port.

8. The battery pack with heating function according to claim 1, characterized in that: The power supply device is a mobile power source or a battery pack body.

9. The battery pack with heating function according to claim 1, characterized in that: The heat transfer medium is silicone oil.

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