Battery heating assembly, vehicle and heating system

Abstract

The utility model discloses a battery heating assembly, a vehicle and a heating system. The battery heating assembly comprises a battery; the two ends of the bridge arm are electrically connected with the two ends of the battery respectively; the first end of the inductor is electrically connected with the midpoint of the bridge arm; the first end of the capacitor is electrically connected with the second end of the inductor, and the second end of the capacitor is electrically connected with the second end of the battery. According to the battery heating assembly, the vehicle and the heating system, the heating efficiency can be remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a battery heating assembly, a vehicle and a heating system. Background Art

[0002] At present, the energy of electric vehicle batteries is getting higher and higher, and the driving range is getting longer and longer. In addition to the vehicle attributes, the power source attributes of electric vehicles are becoming more and more obvious. The power battery is the core component of electric vehicles, but the power battery is more sensitive to temperature. Low temperature will affect the charging and discharging performance of the battery. In order to make the power battery charge and discharge better and extend the service life of the power battery, the power battery needs to be heated under low temperature conditions.

[0003] At present, power batteries are usually heated by PTC water heating, heat pump heating and other heating methods, but this method takes a long time to heat the battery, has low heating efficiency, and requires special heating equipment, which brings additional costs to electric vehicles.

[0004] Therefore, improvements are needed to at least partially solve the above problems. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] In order to at least partially solve the above problems, according to a first aspect of the present utility model, a battery heating assembly is provided, comprising:

[0007] Battery;

[0008] A bridge arm, two ends of the bridge arm are electrically connected to two ends of the battery respectively;

[0009] an inductor, a first end of the inductor being electrically connected to a midpoint of the bridge arm; and

[0010] A capacitor, wherein a first end of the capacitor is electrically connected to a second end of the inductor, and a second end of the capacitor is electrically connected to a second end of the battery.

[0011] Exemplarily, there are multiple bridge arms, there is one inductor, and the first end of the inductor is electrically connected to the midpoints of the multiple bridge arms at the same time; or,

[0012] There are multiple bridge arms, there are multiple inductors, the first ends of the multiple inductors are electrically connected to the midpoints of the multiple bridge arms respectively, and the second ends of the multiple inductors are electrically connected to the first end of the capacitor; or,

[0013] There is one bridge arm and multiple inductors. The first ends of the multiple inductors are electrically connected to the midpoint of the bridge arm, and the second ends of the multiple inductors are electrically connected to the first end of the capacitor.

[0014] According to a second aspect of the utility model, a vehicle is provided, comprising the battery heating assembly as described above.

[0015] According to a third aspect of the utility model, there is provided a heating system, comprising a first vehicle, a second vehicle and a cable;

[0016] The first vehicle includes a first battery, a first bridge arm, a first inductor and a first capacitor, wherein two ends of the first bridge arm are electrically connected to two ends of the first battery respectively, a first end of the first inductor is electrically connected to a midpoint of the first bridge arm, a first end of the first capacitor is electrically connected to a second end of the first inductor, and a second end of the first capacitor is electrically connected to a second end of the first battery;

[0017] The second vehicle includes a second battery, a second bridge arm, a second inductor, and a second capacitor, wherein two ends of the second bridge arm are electrically connected to two ends of the second battery respectively, a second end of the second inductor is electrically connected to a midpoint of the second bridge arm, a first end of the second capacitor is electrically connected to a second end of the second inductor, and a second end of the second capacitor is electrically connected to a second end of the second battery;

[0018] Two ends of the first capacitor are electrically connected to two ends of the second capacitor through the cable.

[0019] Exemplarily, the first bridge arm and the second bridge arm are both motor controller bridge arms or charging boost DC bridge arms;

[0020] The first inductor and the second inductor are both motor inductors or charging boost DC inductors;

[0021] The first capacitor and the second capacitor are both charging boost DC energy storage capacitors or charging port voltage stabilizing capacitors.

[0022] Exemplarily, there are multiple first bridge arms, there is one first inductor, and the first end of the first inductor is electrically connected to the midpoints of the multiple first bridge arms at the same time; or,

[0023] There are multiple first bridge arms, there are multiple first inductors, first ends of multiple first inductors are electrically connected to midpoints of multiple first bridge arms respectively, and first ends of multiple first inductors are electrically connected to first ends of first capacitors; or,

[0024] There is one first bridge arm, there are multiple first inductors, first ends of the multiple first inductors are electrically connected to the midpoint of the first bridge arm, and second ends of the multiple first inductors are electrically connected to the first end of the first capacitor; or,

[0025] There are multiple second bridge arms, there is one second inductor, and the first end of the second inductor is electrically connected to the midpoints of the multiple second bridge arms at the same time; or,

[0026] There are multiple second bridge arms, there are multiple second inductors, the first ends of the multiple second inductors are electrically connected to the midpoints of the multiple second bridge arms respectively, and the first ends of the multiple second inductors are electrically connected to the first end of the second capacitor; or,

[0027] There is one second bridge arm, and there are multiple second inductors. The first ends of the multiple second inductors are electrically connected to the midpoint of the second bridge arm, and the second ends of the multiple second inductors are electrically connected to the first end of the first capacitor.

[0028] According to a fourth aspect of the utility model, there is provided a heating system, comprising a first vehicle, a second vehicle and a cable;

[0029] The first vehicle includes a first battery, a bridge arm, an inductor and a first capacitor, wherein two ends of the bridge arm are electrically connected to two ends of the first battery respectively, a first end of the inductor is electrically connected to a midpoint of the bridge arm, a first end of the first capacitor is electrically connected to a second end of the inductor, and a second end of the first capacitor is electrically connected to a second end of the first battery;

[0030] The second vehicle includes a second battery;

[0031] Two ends of the first capacitor are electrically connected to two ends of the second battery through the cable.

[0032] Exemplarily, the second vehicle further comprises a first switch;

[0033] The first switch is disposed between one end of the second battery and the cable.

[0034] Exemplarily, the first vehicle further includes a second capacitor and a second switch, wherein two ends of the second capacitor are electrically connected to two ends of the bridge arm respectively, and the second switch is arranged between one end of the first battery and one end of the second capacitor.

[0035] Exemplarily, the bridge arm is a motor controller bridge arm or a charging boost DC bridge arm;

[0036] The inductor is a motor inductor or a charging boost DC inductor;

[0037] The first capacitor is a charging boost DC energy storage capacitor or a charging port voltage stabilizing capacitor.

[0038] Exemplarily, there are multiple bridge arms, there is one inductor, and the first end of the inductor is electrically connected to the midpoints of the multiple bridge arms at the same time; or,

[0039] There are multiple bridge arms, there are multiple inductors, the first ends of the multiple inductors are electrically connected to the midpoints of the multiple bridge arms respectively, and the first ends of the multiple inductors are electrically connected to the first end of the capacitor; or,

[0040] There is one bridge arm and multiple inductors. The first ends of the multiple inductors are electrically connected to the midpoint of the bridge arm, and the second ends of the multiple inductors are electrically connected to the first end of the capacitor.

[0041] According to the battery heating assembly and heating system of the utility model, the two ends of the bridge arm are electrically connected to the two ends of the battery respectively, the first end of the inductor is electrically connected to the midpoint of the bridge arm, the first end of the capacitor is electrically connected to the second end of the inductor, and the second end of the capacitor is electrically connected to the second end of the battery. By controlling the bridge arm, the current can be circulated between the battery and the capacitor through the inductor for charge and discharge. During the circulation of the current, the heat generated by the internal resistance of the battery is used to heat the battery itself, which can significantly reduce the heating cost and improve the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The following drawings of the present application are hereby used as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the device and principle of the present application. In the drawings,

[0043] Figure 1 FIG. 1 is a circuit diagram of a battery heating assembly according to an embodiment of the present application.

[0044] Figure 2a-2d They are Figure 1 Schematic diagram of current flow in the first circuit state, the second circuit state, the third circuit state and the fourth circuit state of the battery heating component.

[0045] Figure 3 A schematic diagram of the connection between a first vehicle and a second vehicle of a heating system according to an embodiment of the present application.

[0046] Figure 4 FIG. 1 is a circuit diagram of a heating system according to an embodiment of the present application.

[0047] Figure 5a-5d They are Figure 4 Schematic diagram of current flow in the fifth circuit state, the sixth circuit state, the seventh circuit state and the eighth circuit state of the heating system.

[0048] Figure 6a-6d They are Figure 4 Schematic diagram of current flow in the ninth circuit state, the tenth circuit state, the eleventh circuit state and the twelfth circuit state of the heating system.

[0049] Figures 7a-7d They are Figure 4 Schematic diagram of current flow in the thirteenth circuit state, the fourteenth circuit state, the fifteenth circuit state and the sixteenth circuit state of the heating system.

[0050] Figure 8 FIG. 1 is a circuit diagram of a heating system according to another embodiment of the present application.

[0051] Figures 9a-9d They are Figure 8 Schematic diagram of current flow in the seventeenth circuit state, the eighteenth circuit state, the nineteenth circuit state and the twentieth circuit state of the heating system.

[0052] Figures 10a-10d They are Figure 8 Schematic diagram of current flow in the 21st circuit state, the 22nd circuit state, the 23rd circuit state and the 24th circuit state of the heating system.

[0053] Figures 11a-11d They are Figure 8 Schematic diagram of current flow in the 25th circuit state, the 26th circuit state, the 27th circuit state and the 28th circuit state of the heating system.

[0054] Description of reference numerals:

[0055] 10-battery heating assembly, 11-battery, 12-bridge arm, 13-inductor, 14-capacitor, 15-bus capacitor;

[0056] 110 - first vehicle, 111 - first battery, 112 - first bridge arm, 113 - first inductor, 114 - first capacitor, 115 - third capacitor, 120 - second vehicle, 121 - second battery, 122 - second bridge arm, 123 - second inductor, 124 - second capacitor, 125 - fourth capacitor, 130 - cable;

[0057] 210 - first vehicle, 211 - first battery, 212 - bridge arm, 213 - inductor, 214 - first capacitor, 215 - second capacitor, 216 - second switch, 220 - second vehicle, 221 - second battery, 222 - third capacitor, 223 - first switch, 230 - cable. DETAILED DESCRIPTION

[0058] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0059] It should be understood that the present application can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0060] It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as a second element, component, region, layer or part.

[0061] Spatially relative terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein for convenience of description to describe the relationship of one element or feature to other elements or features shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation shown in the figures.

[0062] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0063] Embodiments of the utility model are described herein with reference to cross-sectional views as schematic diagrams of ideal embodiments (and intermediate structures) of the present application. In this way, variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, the embodiments of the present application should not be limited to the specific shapes shown herein, but include shape deviations due to, for example, manufacturing. Therefore, what is shown in the figures is schematic in nature, and their shapes are not intended to display the actual shape of the device and are not intended to limit the scope of the present application.

[0064] Refer to the attached Figure 1 2. A battery heating assembly 10 according to an embodiment of the present application is exemplarily described. The battery heating assembly 10 can be applied to a vehicle or other electronic device having a battery, and is configured to achieve battery self-heating when the battery is in a low temperature state. The battery heating assembly 10 includes a battery 11, a bridge arm 12, an inductor 13, and a capacitor 14.

[0065] The battery 11 has an internal resistance. During the cycle charge and discharge of the battery 11, the internal resistance of the battery 11 generates heat, and the self-heating of the battery 11 can be achieved through this principle. When the battery assembly is applied to a vehicle, the battery 11 can be a power battery on the vehicle.

[0066] The two ends of the bridge arm 12 are electrically connected to the two ends of the battery 11 respectively. Specifically, when the battery heating assembly 10 is applied to a vehicle, the bridge arm 12 can be a motor controller bridge arm or a charging boost DC bridge arm on the vehicle, wherein the charging boost DC bridge arm is a bridge arm in a charging boost DC circuit, which is used to boost the power supply from the charging pile and then provide it to the battery 11 to charge the battery 11. Those skilled in the art can set it according to actual conditions. Reusing the motor controller bridge arm or the charging boost DC bridge arm as the bridge arm 12 in the battery heating assembly 10 can effectively reduce costs.

[0067] The first end of the inductor 13 is electrically connected to the midpoint of the bridge arm 12. Specifically, when the battery heating assembly 10 is applied to a vehicle, the inductor 13 may be a motor inductor or a charging boost DC inductor, wherein the charging boost DC bridge arm is an inductor in a charging boost DC circuit. Those skilled in the art may set it according to actual conditions. Reusing a motor inductor or a charging boost DC inductor as the inductor 13 in the battery heating assembly 10 may effectively reduce costs.

[0068] The first end of the capacitor 14 is electrically connected to the second end of the inductor 13, and the second end of the capacitor 14 is electrically connected to the second end of the battery 11. Specifically, when the battery heating assembly 10 is applied to a vehicle, the capacitor 14 can be a charging boost DC energy storage capacitor or a charging port voltage stabilizing capacitor, wherein the charging boost DC energy storage capacitor is an energy storage capacitor in a charging boost DC circuit. Those skilled in the art can set it according to actual conditions. Reusing the charging boost DC energy storage capacitor or the charging port voltage stabilizing capacitor as the capacitor 14 in the battery heating assembly 10 can effectively reduce costs.

[0069] In the embodiment of the present application, the battery heating assembly 10 further includes a bus capacitor 15, two ends of which are electrically connected to two ends of the battery 11, respectively. The bus capacitor 15 can adjust and balance voltage fluctuations and play a voltage stabilizing role in the circuit.

[0070] In the embodiments of this application, see the attached Figure 1 , the battery heating assembly 10 includes a bridge arm 12 and an inductor 13, and the first end of the inductor 13 is electrically connected to the midpoint of the bridge arm 12. The bridge arm 12 includes an upper bridge arm and a lower bridge arm, the two ends of the upper bridge arm are electrically connected to the first end of the battery 11 and the first end of the inductor 13 respectively, the first end of the lower bridge arm is electrically connected to the first end of the inductor 13, and the second end of the lower bridge arm is electrically connected to the second end of the battery 11 and the second end of the capacitor 14, and the upper bridge arm and the lower bridge arm are both powered by power switch tubes. In some other embodiments, there are multiple bridge arms 12, there is one inductor 13, and the first end of the inductor 13 is electrically connected to the midpoints of multiple bridge arms 12 at the same time. In some other embodiments, there are multiple bridge arms 12, there are multiple inductors 13, the first ends of multiple inductors 13 are electrically connected to the midpoints of multiple bridge arms 12 respectively, and the second ends of multiple inductors 13 are electrically connected to the first end of the capacitor 14. In some other embodiments, there is one bridge arm 12, there are multiple inductors 13, the first ends of the multiple inductors 13 are electrically connected to the midpoint of the bridge arm 12, and the second ends of the multiple inductors 13 are electrically connected to the first end of the capacitor 14. The use of multiple inductors 13 in the battery heating assembly 10 can significantly improve the heating efficiency.

[0071] Attached Figure 2a-2d Schematic diagrams of current flow in the first circuit state, the second circuit state, the third circuit state and the fourth circuit state of the battery heating assembly 10 are respectively shown.

[0072] First circuit status: see attached Figure 2a , the upper arm of the bridge arm 12 is turned on, the lower arm of the bridge arm 12 is turned off, and the battery 11 charges the inductor 13 and the capacitor 14.

[0073] Second circuit status: see attached Figure 2b , the upper bridge arm of the bridge arm 12 is turned off, the lower bridge arm of the bridge arm 12 is turned on, and the inductor 13 charges the capacitor 14.

[0074] Third circuit status: see attached Figure 2c , the upper arm of the bridge arm 12 is turned off, the lower arm of the bridge arm 12 is turned on, and the capacitor 14 charges the inductor 13.

[0075] Fourth circuit status: see attached Figure 2d , the upper arm of the bridge arm 12 is turned on, the lower arm of the bridge arm 12 is turned off, and the capacitor 14 and the inductor 13 charge the battery 11 together.

[0076] When the battery 11 needs to be heated, the first circuit state, the second circuit state, the third circuit state and the fourth circuit state can be periodically switched by controlling the on and off of the upper and lower bridge arms of the bridge arm 12, so that the current is circulated between the battery 11 and the capacitor 14 through the inductor 13 to charge and discharge, thereby realizing self-heating of the battery 11.

[0077] The embodiment of the present application also provides a vehicle, which includes the battery heating assembly 10 as described above. The vehicle is an electric vehicle that uses a battery 11 as a vehicle power source.

[0078] Refer to the attached Figure 3 7 exemplarily describes a heating system according to an embodiment of the present application. The heating system includes a first vehicle 110 , a second vehicle 120 , and a cable 130 .

[0079] The first vehicle 110 includes a first battery 111, a first bridge arm 112, a first inductor 113, and a first capacitor 114. The two ends of the first bridge arm 112 are electrically connected to the two ends of the first battery 111, respectively, the first end of the first inductor 113 is electrically connected to the midpoint of the first bridge arm 112, the first end of the first capacitor 114 is electrically connected to the second end of the first inductor 113, and the second end of the first capacitor 114 is electrically connected to the second end of the first battery 111.

[0080] The second vehicle 120 includes a second battery 121, a second bridge arm 122, a second inductor 123 and a second capacitor 124, the two ends of the second bridge arm 122 are electrically connected to the two ends of the second battery 121 respectively, the second end of the second inductor 123 is electrically connected to the midpoint of the second bridge arm 122, the first end of the second capacitor 124 is electrically connected to the second end of the second inductor 123, and the second end of the second capacitor 124 is electrically connected to the second end of the second battery 121.

[0081] The two ends of the first capacitor 114 are electrically connected to the two ends of the second capacitor 124 through the cable 130, respectively, to achieve electrical connection between the first vehicle 110 and the second vehicle 120. Specifically, the first vehicle 110 may be provided with a first socket electrically connected to the first capacitor 114, the first end of the cable 130 is provided with a first plug matching the first socket, the second vehicle 120 may be provided with a second socket electrically connected to the second capacitor 124, the second end of the cable 130 is provided with a second plug matching the second socket, the first plug and the second plug are plug-connected to the first socket and the second socket, respectively, to achieve electrical connection between the first vehicle 110 and the second vehicle 120.

[0082] In an embodiment of the present application, the first bridge arm 112 and the second bridge arm 122 may be motor controller bridge arms or charging boost DC bridge arms. The first inductor 113 and the second inductor 123 may be motor inductors or charging boost DC inductors. The first capacitor 114 and the second capacitor 124 may be charging boost DC energy storage capacitors or charging port stabilizing capacitors. Those skilled in the art may make settings according to actual conditions. Specifically, the first battery 111, the first bridge arm 112, the first inductor 113, the first capacitor 114 constituting the first vehicle 110 and the second battery 121, the second bridge arm 122, the second inductor 123, the second capacitor 124 constituting the second vehicle 120 have the same structural construction as the battery 11, the bridge arm 12, the inductor 13 and the capacitor 14 in the above-mentioned embodiment, and will not be repeated here. Reusing the motor controller bridge arm or the charging boost DC bridge arm as the first bridge arm 112 and the second bridge arm 122 in the heating system, reusing the motor inductor or the charging boost DC inductor as the first inductor 113 and the second inductor 123 in the heating system, and reusing the charging boost DC energy storage capacitor or the charging port voltage stabilizing capacitor as the first capacitor 114 and the second capacitor 124 in the heating system can effectively reduce costs.

[0083] In the embodiments of this application, see the attached Figure 4, the first vehicle 110 has a first bridge arm 112 and a first inductor 113, and the first end of the first inductor 113 is electrically connected to the midpoint of the first bridge arm 112. The first bridge arm 112 includes an upper bridge arm and a lower bridge arm, the two ends of the upper bridge arm are electrically connected to the first end of the first battery 111 and the first end of the first inductor 113 respectively, the first end of the lower bridge arm is electrically connected to the first end of the first inductor 113, and the second end of the lower bridge arm is electrically connected to the second end of the first battery 111 and the second end of the first capacitor 114, and the upper bridge arm and the lower bridge arm are both powered by power switch tubes. In some other embodiments, there are multiple first bridge arms 112, there is one first inductor 113, and the first end of the first inductor 113 is electrically connected to the midpoints of multiple first bridge arms 112 at the same time. In some other embodiments, there are multiple first bridge arms 112, there are multiple first inductors 113, the first ends of the multiple first inductors 113 are respectively electrically connected to the midpoints of the multiple first bridge arms 112, and the first ends of the multiple first inductors 113 are all electrically connected to the first end of the first capacitor 114. In some other embodiments, there is one first bridge arm 112, there are multiple first inductors 113, the first ends of the multiple first inductors 113 are all electrically connected to the midpoint of the first bridge arm 112, and the second ends of the multiple first inductors 113 are all electrically connected to the first end of the first capacitor 114. Using multiple first inductors 113 in the heating system can significantly improve the heating efficiency.

[0084] In the embodiments of this application, see the attached Figure 4 , there is one second bridge arm 122, there is one second inductor 123, and the first end of the second inductor 123 is electrically connected to the midpoint of the second bridge arm 122. The second bridge arm 122 includes an upper bridge arm and a lower bridge arm, the two ends of the upper bridge arm are electrically connected to the first end of the second battery 121 and the first end of the second inductor 123 respectively, the first end of the lower bridge arm is electrically connected to the first end of the second inductor 123, and the second end of the lower bridge arm is electrically connected to the second end of the second battery 121 and the second end of the second capacitor 124, and the upper bridge arm and the lower bridge arm are both powered by power switch tubes. In some other embodiments, there are multiple second bridge arms 122, there is one second inductor 123, and the first end of the second inductor 123 is electrically connected to the midpoints of multiple second bridge arms 122 at the same time. In some other embodiments, there are multiple second bridge arms 122, there are multiple second inductors 123, the first ends of multiple second inductors 123 are electrically connected to the midpoints of multiple second bridge arms 122 respectively, and the first ends of multiple second inductors 123 are electrically connected to the first end of the second capacitor 124. In some other embodiments, there is one second bridge arm 122, there are multiple second inductors 123, the first ends of the multiple second inductors 123 are electrically connected to the midpoint of the second bridge arm 122, and the second ends of the multiple second inductors 123 are electrically connected to the first end of the first capacitor 114. Using multiple second inductors 123 in the heating system can significantly improve the heating efficiency.

[0085] In the embodiment of the present application, the first vehicle 110 further includes a third capacitor 115, and the two ends of the third capacitor 115 are respectively electrically connected to the two ends of the first battery 111. The second vehicle 120 further includes a fourth capacitor 125, and the two ends of the fourth capacitor 125 are respectively electrically connected to the two ends of the second battery 121. The third capacitor 115 and the fourth capacitor 125 can adjust and balance the voltage fluctuation and play a voltage stabilizing role in the circuit.

[0086] Attached Figure 5a-5d Schematic diagrams showing the current flow in the fifth circuit state, the sixth circuit state, the seventh circuit state and the eighth circuit state of the heating system are shown respectively.

[0087] Fifth circuit status: see attached Figure 5a , the upper bridge arm of the first bridge arm 112 is turned on, the lower bridge arm of the first bridge arm 112 is turned off, the upper bridge arm and the lower bridge arm of the second bridge arm 122 are both turned off, and the first battery 111 charges the first inductor 113, the first capacitor 114 and the second capacitor 124.

[0088] Sixth circuit status: see attached Figure 5b , the upper bridge arm of the first bridge arm 112 is turned off, the lower bridge arm of the first bridge arm 112 is turned on, the upper bridge arm and the lower bridge arm of the second bridge arm 122 are both turned off, and the first inductor 113 charges the first capacitor 114 and the second capacitor 124.

[0089] Seventh circuit status: see attached Figure 5c , the upper bridge arm of the first bridge arm 112 is turned off, the lower bridge arm of the first bridge arm 112 is turned on, the upper bridge arm and the lower bridge arm of the second bridge arm 122 are both turned off, and the first capacitor 114 and the second capacitor 124 charge the first inductor 113.

[0090] Eighth circuit status: see attached Figure 5d , the upper bridge arm of the first bridge arm 112 is turned on, the lower bridge arm of the first bridge arm 112 is turned off, the upper bridge arm and the lower bridge arm of the second bridge arm 122 are both turned off, and the first inductor 113, the first capacitor 114 and the second capacitor 124 jointly charge the first battery 111.

[0091] When the first battery 111 needs to be heated and the second battery 121 does not need to be heated, the fifth loop state, the sixth loop state, the seventh loop state and the eighth loop state can be periodically switched by controlling the on and off of the upper and lower bridge arms of the first bridge arm 112 and the upper and lower bridge arms of the second bridge arm 122, so that the current is cyclically charged and discharged between the first battery 111 and the first capacitor 114 and the second capacitor 124 through the first inductor 113, thereby achieving heating of the first battery 111.

[0092] Attached Figure 6a-6d Schematic diagrams of current flow in the ninth circuit state, the tenth circuit state, and the twelfth circuit state of the heating system are shown respectively.

[0093] Ninth circuit status: see attached Figure 6a , the upper bridge arm and the lower bridge arm of the first bridge arm 112 are both turned off, the upper bridge arm of the second bridge arm 122 is turned on, and the lower bridge arm of the second bridge arm 122 is turned off, and the second battery 121 charges the second inductor 123, the first capacitor 114 and the second capacitor 124.

[0094] Tenth circuit status: see attached Figure 6b , the upper bridge arm and the lower bridge arm of the first bridge arm 112 are both turned off, the upper bridge arm of the second bridge arm 122 is turned off, the lower bridge arm of the second bridge arm 122 is turned on, and the second inductor 123 charges the first capacitor 114 and the second capacitor 124 .

[0095] Eleventh circuit status: see attached Figure 6c , the upper bridge arm and the lower bridge arm of the first bridge arm 112 are both turned off, the upper bridge arm of the second bridge arm 122 is turned off, the lower bridge arm of the first bridge arm 112 is turned on, and the first capacitor 114 and the second capacitor 124 charge the second inductor 123 .

[0096] Twelfth circuit status: see attached Figure 6d , the upper bridge arm and the lower bridge arm of the first bridge arm 112 are both turned off, the upper bridge arm of the second bridge arm 122 is turned on, and the lower bridge arm of the second bridge arm 122 is turned off, and the second inductor 123, the first capacitor 114 and the second capacitor 124 jointly charge the second battery 121.

[0097] When the first battery 111 does not need to be heated but the second battery 121 needs to be heated, the ninth circuit state, the tenth circuit state, the eleventh circuit state and the twelfth circuit state can be periodically switched by controlling the on and off of the upper and lower bridge arms of the first bridge arm 112 and the upper and lower bridge arms of the second bridge arm 122, so that the current is cyclically charged and discharged between the second battery 121 and the first capacitor 114 and the second capacitor 124 through the second inductor 123, thereby heating the second battery 121.

[0098] Attached Figures 7a-7d Schematic diagrams of current flow in the thirteenth circuit state, the fourteenth circuit state, the fifteenth circuit state and the sixteenth circuit state of the heating system are respectively shown.

[0099] Thirteenth circuit status: see attached Figure 7a , the upper bridge arm of the first bridge arm 112 is turned on, the lower bridge arm of the first bridge arm 112 is turned off, the upper bridge arm of the second bridge arm 122 is turned off, the lower bridge arm of the second bridge arm 122 is turned on, and the first battery 111 charges the first inductor 113 and the second inductor 123 .

[0100] Fourteenth circuit status: see attached Figure 7b, the upper bridge arm of the first bridge arm 112 is turned on, the lower bridge arm of the first bridge arm 112 is turned off, the upper bridge arm of the second bridge arm 122 is turned on, the lower bridge arm of the second bridge arm 122 is turned off, and the first battery 111, the first inductor 113 and the second inductor 123 jointly charge the second battery 121.

[0101] Fifteenth circuit status: see attached Figure 7c , the upper bridge arm of the first bridge arm 112 is turned off, the lower bridge arm of the first bridge arm 112 is turned on, the upper bridge arm of the second bridge arm 122 is turned on, the lower bridge arm of the second bridge arm 122 is turned off, and the second battery 121 charges the first inductor 113 and the second inductor 123 .

[0102] Sixteenth circuit status: see attached Figure 7d , the upper bridge arm of the first bridge arm 112 is turned on, the lower bridge arm of the first bridge arm 112 is turned off, the upper bridge arm of the second bridge arm 122 is turned on, the lower bridge arm of the second bridge arm 122 is turned off, and the second battery 121, the first inductor 113 and the second inductor 123 jointly charge the first battery 111.

[0103] When the first battery 111 needs to be heated and the second battery 121 needs to be heated, the upper and lower bridge arms of the first bridge arm 112 and the upper and lower bridge arms of the second bridge arm 122 can be controlled to be on and off, so that the thirteenth circuit state, the fourteenth circuit state, the fifteenth circuit state and the sixteenth circuit state are periodically switched, so that the current is cyclically charged and discharged between the first battery 111 and the second battery 121, thereby achieving heating of the first battery 111 and the second battery 121.

[0104] Refer to the attached Figure 8-1 1 exemplarily describes a heating system according to another embodiment of the present application. The heating system includes a first vehicle 210, a second vehicle 220, and a cable 230.

[0105] The first vehicle 210 includes a first battery 211, a bridge arm 212, an inductor 213 and a first capacitor 214, wherein two ends of the bridge arm 212 are electrically connected to two ends of the first battery 211, respectively, a first end of the inductor 213 is electrically connected to a midpoint of the bridge arm 212, a first end of the first capacitor 214 is electrically connected to a second end of the inductor 213, and a second end of the first capacitor 214 is electrically connected to a second end of the first battery 211. The second vehicle 220 includes a second battery 221.

[0106] The two ends of the first capacitor 214 are electrically connected to the two ends of the second battery 221 through the cable 230, respectively, to achieve electrical connection between the first vehicle 210 and the second vehicle 220. Specifically, the connection method between the cable 230 and the first vehicle 210 and the second vehicle 220 is the same as that in the above embodiment, which will not be repeated here.

[0107] In an embodiment of the present application, the bridge arm 212 is a motor controller bridge arm or a charging boost DC bridge arm. The inductor 213 is a motor inductor or a charging boost DC inductor. The first capacitor 214 is a charging boost DC energy storage capacitor or a charging port voltage stabilizing capacitor. Specifically, the first battery 211, the bridge arm 212, the inductor 213, the first capacitor 214 that constitute the first vehicle 210, and the second battery 221 that constitutes the second vehicle 220 have the same structural structure as the battery 11, the bridge arm 12, the inductor 13 and the capacitor 14 in the above-mentioned embodiment, which will not be repeated here. Reusing the motor controller bridge arm or the charging boost DC bridge arm as the bridge arm 212 in the heating system, the motor inductor or the charging boost DC inductor as the inductor 213 in the heating system, and the charging boost DC energy storage capacitor or the charging port voltage stabilizing capacitor as the first capacitor 214 in the heating system can effectively reduce costs.

[0108] In the embodiments of this application, see the attached Figure 8 , there is one bridge arm 212, there is one inductor 213, and the first end of the inductor 213 is electrically connected to the midpoint of the bridge arm 212. The bridge arm 212 includes an upper bridge arm and a lower bridge arm, the two ends of the upper bridge arm are electrically connected to the first end of the first battery 211 and the first end of the inductor 213 respectively, the first end of the lower bridge arm is electrically connected to the first end of the inductor 213, the second end of the lower bridge arm is electrically connected to the second end of the first battery 211 and the second end of the first capacitor 214, and the upper bridge arm and the lower bridge arm are both powered by power switch tubes. In other embodiments, there may be multiple bridge arms 212, there may be one inductor 213, and the first end of the inductor 213 is electrically connected to the midpoints of multiple bridge arms at the same time. In other embodiments, there may be multiple bridge arms 212, there may be multiple inductors 213, the first ends of multiple inductors 213 are electrically connected to the midpoints of multiple bridge arms 212 respectively, and the first ends of multiple inductors 213 are electrically connected to the first end of the first capacitor 214. In some other embodiments, there may be one bridge arm 212, and there may be multiple inductors 213, the first ends of the multiple inductors 213 are electrically connected to the midpoint of the bridge arm 212, and the second ends of the multiple inductors 213 are electrically connected to the first end of the first capacitor 214. Using multiple inductors 213 in the heating system can significantly improve the heating efficiency.

[0109] In the embodiment of the present application, the second vehicle 220 further includes a first switch 223. The first switch 223 is disposed between one end of the second battery 221 and the cable 230, and is used to connect or disconnect the electrical connection between the first vehicle 210 and the second vehicle 220.

[0110] In the embodiment of the present application, the first vehicle 210 also includes a second capacitor 215 and a second switch 216 , the two ends of the second capacitor 215 are electrically connected to the two ends of the bridge arm 212 respectively, and the second switch 216 is arranged between one end of the first battery 211 and one end of the second capacitor 215 .

[0111] In the embodiment of the present application, the second vehicle 220 further includes a third capacitor 222, and both ends of the third capacitor 222 are respectively electrically connected to both ends of the second battery 221. The third capacitor 222 can adjust and balance voltage fluctuations and play a voltage stabilizing role in the circuit.

[0112] Attached Figures 9a-9d Schematic diagrams of current flow in the seventeenth circuit state, the eighteenth circuit state, the nineteenth circuit state, and the twentieth circuit state of the heating system are shown respectively.

[0113] Seventeenth circuit status: see attached Figure 9a , the upper bridge arm 212 of the bridge arm 212 is turned on, the lower bridge arm 212 of the bridge arm 212 is turned off, the first switch 223 is disconnected, the second switch 216 is turned on, and the first battery 211 stores energy in the inductor 213 and the first capacitor 214 .

[0114] Eighteenth circuit status: see attached Figure 9b , the upper bridge arm 212 of the bridge arm 212 is turned off, the lower bridge arm 212 of the bridge arm 212 is turned on, the first switch 223 is turned off, the second switch 216 is turned off or on, and the inductor 213 charges the first capacitor 214.

[0115] Nineteenth circuit status: see attached Fig.9c , the upper bridge arm 212 of the bridge arm 212 is turned off, the lower bridge arm 212 of the bridge arm 212 is turned on, the first switch 223 is turned off, the second switch 216 is turned off or on, and the first capacitor 214 charges the inductor 213.

[0116] Twentieth circuit status: see attached Figure 9d , the upper bridge arm 212 of the bridge arm 212 is turned on, the lower bridge arm 212 of the bridge arm 212 is turned off, the first switch 223 is disconnected, the second switch 216 is turned on, and the inductor 213 and the first capacitor 214 charge the first battery 211 together.

[0117] When the first battery 211 needs to be heated and the second battery 221 does not need to be heated, the upper and lower bridge arms of the bridge arm 212, the first switch 223 and the second switch 216 can be controlled to switch between the seventeenth loop state, the eighteenth loop state, the nineteenth loop state and the twentieth loop state periodically, so that the current is cyclically charged and discharged between the first battery 211 and the first capacitor 214 through the inductor 213, thereby heating the first battery 211.

[0118] Attached Figures 10a-10d Schematic diagrams of current flow in the 21st circuit state, the 22nd circuit state, the 23rd circuit state and the 24th circuit state of the heating system are respectively shown.

[0119] 21st circuit status: see attached Fig.10a, the upper bridge arm 212 of the bridge arm 212 is turned off, the lower bridge arm 212 of the bridge arm 212 is turned on, the first switch 223 is turned on, the second switch 216 is turned off or on, and the second battery 221 charges the inductor 213 .

[0120] 22nd circuit status: see attached Fig.10b , the upper bridge arm 212 of the bridge arm 212 is turned on, the lower bridge arm 212 of the bridge arm 212 is turned off, the first switch 223 is turned on, the second switch 216 is turned off, and the second battery 221 and the inductor 213 jointly charge the second capacitor 215 .

[0121] Twenty-third circuit status: see attached Fig.10c , the upper bridge arm 212 of the bridge arm 212 is turned on, the lower bridge arm 212 of the bridge arm 212 is turned off, the first switch 223 is turned on, the second switch 216 is turned off, and the second capacitor 215 charges the inductor 213 and the second battery 221 .

[0122] 24th circuit status: see attached Fig.10d , the upper bridge arm 212 of the bridge arm 212 is turned off, the lower bridge arm 212 of the bridge arm 212 is turned on, the first switch 223 is turned on, the second switch 216 is turned off or on, and the inductor 213 charges the second battery 221 .

[0123] When the first battery 211 does not need to be heated but the second battery 221 needs to be heated, the upper and lower bridge arms of the bridge arm 212, the first switch 223 and the second switch 216 can be controlled to switch on and off, so that the twenty-first circuit state, the twenty-second circuit state, the twenty-third circuit state and the twenty-fourth circuit state are periodically switched, so that the current is cyclically charged and discharged between the second battery 221 and the second capacitor 215 through the inductor 213, thereby heating the second battery 221.

[0124] Attached Figures 11a-11d Schematic diagrams of current flow in the 25th circuit state, 26th circuit state, 27th circuit state and 28th circuit state of the heating system are respectively shown.

[0125] Twenty-fifth circuit status: see attached Fig.11a , the upper bridge arm 212 of the bridge arm 212 is turned on, the lower bridge arm 212 of the bridge arm 212 is turned off, the first switch 223 is turned on, the second switch 216 is turned on, and the first battery 211 charges the inductor 213 and the second battery 221 .

[0126] Twenty-sixth circuit status: see attached Fig.11b , the upper bridge arm 212 of the bridge arm 212 is turned off, the lower bridge arm 212 of the bridge arm 212 is turned on, the first switch 223 is turned on, the second switch 216 is turned off or on, and the inductor 213 charges the second battery 221 .

[0127] Twenty-seventh circuit status: see attached Fig.11c , the upper bridge arm 212 of the bridge arm 212 is turned off, the lower bridge arm 212 of the bridge arm 212 is turned on, the first switch 223 is turned on, the second switch 216 is turned off or on, and the second battery 221 charges the inductor 213 .

[0128] 28th circuit status: see attached Fig.11d , the upper bridge arm 212 of the bridge arm 212 is turned on, the lower bridge arm 212 of the bridge arm 212 is turned off, the first switch 223 is turned on, the second switch 216 is turned on, and the second battery 221 and the inductor 213 charge the first battery 211 together.

[0129] When the first battery 211 needs to be heated and the second battery 221 needs to be heated, the upper and lower bridge arms of the bridge arm 212, the first switch 223 and the second switch 216 can be controlled to switch between the 25th circuit state, the 26th circuit state, the 27th circuit state and the 28th circuit state periodically, so that the current is cyclically charged and discharged between the first battery 211 and the second battery 221, thereby heating the first battery 211 and the second battery 221.

[0130] In some embodiments, the first switch 223 may not be provided in the second vehicle 220, and both ends of the first capacitor 214 are directly electrically connected to the cable 230. In this case, the heating system can only heat the second battery 221 alone and heat the first battery 211 and the second battery 221 simultaneously.

[0131] In some embodiments, the second capacitor 215 and the second switch 216 may not be provided in the first vehicle 210, and the two ends of the bridge arm 212 are directly electrically connected to the two ends of the first battery 211. At this time, the heating system can only realize the separate heating of the first battery 221 and the simultaneous heating of the first battery 211 and the second battery 221.

[0132] In some embodiments, the first switch 223 may not be provided in the second vehicle 220, and the second capacitor 215 and the second switch 216 may not be provided in the first vehicle 210. In this case, the heating system can only heat the first battery 211 and the second battery 221 at the same time.

[0133] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0134] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0135] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features explicitly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features that are less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0136] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0137] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0138] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A battery heating assembly, characterized in that: include: Battery; A bridge arm, two ends of the bridge arm are electrically connected to two ends of the battery respectively; an inductor, a first end of the inductor being electrically connected to a midpoint of the bridge arm; as well as A capacitor, wherein a first end of the capacitor is electrically connected to a second end of the inductor, and a second end of the capacitor is electrically connected to a second end of the battery.

2. The battery heating assembly according to claim 1, characterized in that: There are multiple bridge arms, there is one inductor, and the first end of the inductor is electrically connected to the midpoints of the multiple bridge arms at the same time; or, There are multiple bridge arms, there are multiple inductors, the first ends of the multiple inductors are electrically connected to the midpoints of the multiple bridge arms respectively, and the second ends of the multiple inductors are electrically connected to the first end of the capacitor; or, There is one bridge arm and multiple inductors. The first ends of the multiple inductors are electrically connected to the midpoint of the bridge arm, and the second ends of the multiple inductors are electrically connected to the first end of the capacitor.

3. A vehicle, characterized in that: Comprising the battery heating assembly as claimed in claim 1 or 2.

4. A heating system, characterized in that: comprising a first vehicle, a second vehicle and a cable; The first vehicle includes a first battery, a first bridge arm, a first inductor and a first capacitor, wherein two ends of the first bridge arm are electrically connected to two ends of the first battery respectively, a first end of the first inductor is electrically connected to a midpoint of the first bridge arm, a first end of the first capacitor is electrically connected to a second end of the first inductor, and a second end of the first capacitor is electrically connected to a second end of the first battery; The second vehicle includes a second battery, a second bridge arm, a second inductor, and a second capacitor, wherein two ends of the second bridge arm are electrically connected to two ends of the second battery respectively, a second end of the second inductor is electrically connected to a midpoint of the second bridge arm, a first end of the second capacitor is electrically connected to a second end of the second inductor, and a second end of the second capacitor is electrically connected to a second end of the second battery; Two ends of the first capacitor are electrically connected to two ends of the second capacitor through the cable.

5. The heating system according to claim 4, characterized in that The first bridge arm and the second bridge arm are both motor controller bridge arms or charging boost DC bridge arms; The first inductor and the second inductor are both motor inductors or charging boost DC inductors; The first capacitor and the second capacitor are both charging boost DC energy storage capacitors or charging port voltage stabilizing capacitors.

6. The heating system according to claim 4, characterized in that: There are multiple first bridge arms, there is one first inductor, and the first end of the first inductor is electrically connected to the midpoints of the multiple first bridge arms at the same time; or, There are multiple first bridge arms, there are multiple first inductors, first ends of multiple first inductors are electrically connected to midpoints of multiple first bridge arms respectively, and first ends of multiple first inductors are electrically connected to first ends of first capacitors; or, There is one first bridge arm, there are multiple first inductors, first ends of the multiple first inductors are electrically connected to the midpoint of the first bridge arm, and second ends of the multiple first inductors are electrically connected to the first end of the first capacitor; or, There are multiple second bridge arms, there is one second inductor, and the first end of the second inductor is electrically connected to the midpoints of the multiple second bridge arms at the same time; or, There are multiple second bridge arms, there are multiple second inductors, the first ends of the multiple second inductors are electrically connected to the midpoints of the multiple second bridge arms respectively, and the first ends of the multiple second inductors are electrically connected to the first end of the second capacitor; or, There is one second bridge arm, and there are multiple second inductors. The first ends of the multiple second inductors are electrically connected to the midpoint of the second bridge arm, and the second ends of the multiple second inductors are electrically connected to the first end of the first capacitor.

7. A heating system, characterized in that: comprising a first vehicle, a second vehicle and a cable; The first vehicle includes a first battery, a bridge arm, an inductor and a first capacitor, wherein two ends of the bridge arm are electrically connected to two ends of the first battery respectively, a first end of the inductor is electrically connected to a midpoint of the bridge arm, a first end of the first capacitor is electrically connected to a second end of the inductor, and a second end of the first capacitor is electrically connected to a second end of the first battery; The second vehicle includes a second battery; Two ends of the first capacitor are electrically connected to two ends of the second battery through the cable.

8. The heating system according to claim 7, characterized in that: The second vehicle further includes a first switch; The first switch is disposed between one end of the second battery and the cable.

9. The heating system according to claim 7, characterized in that: The first vehicle further includes a second capacitor and a second switch, wherein two ends of the second capacitor are electrically connected to two ends of the bridge arm respectively, and the second switch is arranged between one end of the first battery and one end of the second capacitor.

10. The heating system according to claim 7, characterized in that The bridge arm is a motor controller bridge arm or a charging boost DC bridge arm; The inductor is a motor inductor or a charging boost DC inductor; The first capacitor is a charging boost DC energy storage capacitor or a charging port voltage stabilizing capacitor.

11. The heating system according to claim 7, characterized in that: There are multiple bridge arms, there is one inductor, and the first end of the inductor is electrically connected to the midpoints of the multiple bridge arms at the same time; or, There are multiple bridge arms, there are multiple inductors, the first ends of the multiple inductors are electrically connected to the midpoints of the multiple bridge arms respectively, and the first ends of the multiple inductors are electrically connected to the first end of the capacitor; or, There is one bridge arm and multiple inductors. The first ends of the multiple inductors are electrically connected to the midpoint of the bridge arm, and the second ends of the multiple inductors are electrically connected to the first end of the capacitor.

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