Battery temperature adjusting device and electronic equipment

Abstract

The utility model relates to a battery temperature adjusting device and electronic equipment, the battery temperature adjusting device comprises an adjusting sheet, and a first flow channel is arranged in the adjusting sheet; the pump and the first flow channel form a loop, a conductive liquid medium is contained in the loop, and the liquid medium is arranged to be capable of heating when powered on; and the electric connecting piece partially extends into the loop and is used for being electrically connected with a battery. The battery temperature adjusting device can give consideration to heating and heat dissipation of the battery, and is beneficial to realizing constant-temperature regulation and control of the battery.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery temperature regulating device and an electronic device. Background Art

[0002] At present, the optimal operating temperature of the battery is 0-40℃, so the battery temperature affects the performance of the battery. Specifically, when the battery temperature is too low, the resistance of the electrolyte inside the battery becomes larger, the chemical reaction rate decreases, and the current generated is relatively reduced, which will cause the battery to have electricity but cannot release it, resulting in a decrease in battery performance. When the battery temperature is too high, the battery capacity may be permanently lost.

[0003] In the related art, there is an urgent need to design a battery temperature regulating device that can take into account both heating and heat dissipation. Utility Model Content

[0004] The purpose of the present disclosure is to provide a battery temperature regulating device, which can take into account both the heating and heat dissipation of the battery, thereby facilitating constant temperature regulation of the battery.

[0005] In order to achieve the above object, the present disclosure provides a battery temperature adjustment device, comprising:

[0006] An adjusting plate, wherein a first flow channel is arranged inside the adjusting plate;

[0007] a pump, wherein the pump and the first flow channel form a circuit, wherein a conductive liquid medium is contained in the circuit, and wherein the liquid medium is configured to generate heat when powered; and

[0008] An electrical connector partially extends into the loop and is used for electrically connecting to a battery.

[0009] Optionally, the liquid medium is liquid metal.

[0010] Optionally, the regulating plate includes at least two regulating parts arranged in sequence, each regulating part is provided with the first flow channel, the pump has at least two second flow channels, and each of the second flow channels and the first flow channel of the corresponding regulating part constitute the loop.

[0011] Optionally, at least one third flow channel is connected between two adjacent second flow channels, and a first opening and closing member is provided on the third flow channel.

[0012] Optionally, the second flow channel includes a first branch flow channel, a second opening and closing member is provided on the first branch flow channel, and two third flow channels are connected between two adjacent first branch flow channels of two adjacent second flow channels;

[0013] The battery temperature regulating device has a first working mode and a second working mode. In the first working mode, the first opening and closing member closes the third flow channel, and the second opening and closing member opens the first branch flow channel; in the second working mode, the first opening and closing member opens the third flow channel, and the second opening and closing member closes the first branch flow channel.

[0014] Optionally, each of the adjustment parts is provided with at least one temperature sensor.

[0015] Optionally, at least two adjusting parts are arranged in sequence along the width direction of the adjusting piece, and each of the adjusting parts is provided with the temperature sensor on both sides of the length direction of the adjusting piece.

[0016] Optionally, the first flow channel is configured as a continuous bend and has a second flow channel and a third flow channel that are alternately connected in sequence, the second flow channel extends along the length direction of the adjustment sheet, and the third flow channel extends along the width direction of the adjustment sheet.

[0017] Optionally, a heat conducting member is provided on at least one side of the regulating sheet in its thickness direction, and the heat conducting member also covers the pump.

[0018] According to a second aspect of the present disclosure, an electronic device is provided, comprising a battery, a mainboard and the battery temperature regulating device as described above, wherein the battery temperature regulating device is attached to the battery, and the electrical connector is constructed as a spring and is electrically connected to the mainboard.

[0019] Optionally, the battery includes at least two battery cells arranged in parallel, and the battery temperature regulating device includes a regulating part attached to each of the battery cells.

[0020] Optionally, a controller is provided on the mainboard, and the controller is electrically connected to the temperature sensor.

[0021] Through the above technical solution, the battery temperature regulating device provided by the present disclosure can be used to attach the regulating sheet to the battery. When the temperature of the battery is too low, the electric connection between the electric connector and the battery can be used to energize the liquid medium. In this way, the heat generated by the liquid medium when it is energized can be used to heat the battery, thereby increasing the battery temperature. When the temperature of the battery is too high, the pump can drive the liquid medium to circulate in the loop, and the liquid medium can take away heat when flowing, thereby dissipating heat for the battery and reducing the battery temperature. Therefore, the battery temperature regulating device disclosed in the present disclosure can take into account both the heating and heat dissipation of the battery, which is conducive to achieving constant temperature control of the battery and keeping the battery at a better temperature.

[0022] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0024] Figure 1 is a simplified structural diagram of an electronic device provided according to an embodiment of the present disclosure;

[0025] Figure 2 is a schematic diagram of the three-dimensional structure of a battery temperature regulating device provided according to an embodiment of the present disclosure;

[0026] Figure 3 is a partial structural schematic diagram of a battery temperature regulating device provided according to an embodiment of the present disclosure;

[0027] Figure 4 is a schematic structural diagram of a battery temperature regulating device provided in accordance with an embodiment of the present disclosure from a cross-sectional perspective;

[0028] Figure 5 is a schematic diagram of a battery temperature regulating device provided according to an embodiment of the present disclosure in a first working state;

[0029] Figure 6 It is a schematic diagram of a battery temperature regulating device provided according to an embodiment of the present disclosure in a first working state.

[0030] Description of Reference Numerals

[0031] 1-adjusting plate, 11-first flow channel, 111-second branch flow channel, 112-third branch flow channel, 12-adjusting part, 2-pump, 21-second flow channel, 211-first branch flow channel, 22-third flow channel, 3-electrical connector, 4-temperature sensor, 5-heat conducting member, 6-battery, 61-battery cell, 7-mainboard, 8-flexible circuit board, 100-loop. DETAILED DESCRIPTION

[0032] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0033] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the inside and outside of the contour of each component. Figure 4 The up and down direction of the drawing; the width direction of the adjustment piece 1 can refer to Figure 4The left-right direction of the drawing. The terms "first" and "second" are used to distinguish one element from another element and do not have order or importance. In addition, when the following description refers to the drawings, the same reference numerals in different drawings represent the same or similar elements, and this disclosure will not repeat them.

[0034] According to an exemplary embodiment of the present disclosure, a battery temperature adjustment device is provided, referring to Figure 1 , Figure 2 as well as Figures 4 to 6 As shown in the figure, the battery temperature regulating device includes: a regulating plate 1, a first flow channel 11 is arranged inside the regulating plate 1; a pump 2, the pump 2 and the first flow channel 11 form a loop 100, the loop 100 contains a conductive liquid medium, and the liquid medium is configured to generate heat when energized; and an electrical connector 3, the electrical connector 3 partially extends into the loop 100 and is used to be electrically connected to the battery 6.

[0035] Through the above technical scheme, the battery temperature regulating device provided by the present disclosure can be used to attach the regulating sheet 1 to the battery 6. When the temperature of the battery 6 is too low, the electrical connection between the electrical connector 3 and the battery 6 can be used to energize the liquid medium. In this way, the heat generated by the liquid medium when it is energized can heat the battery 6, thereby increasing the temperature of the battery 6. When the temperature of the battery 6 is too high, the pump 2 can drive the liquid medium to circulate in the loop 100. The liquid medium can take away heat when flowing, thereby dissipating heat for the battery 6 and reducing the temperature of the battery 6. Therefore, the battery temperature regulating device disclosed in the present disclosure can take into account both the heating and heat dissipation of the battery 6, which is conducive to achieving constant temperature control of the battery 6 and keeping the battery 6 at a better temperature. In addition, compared with simply superimposing a separate battery 6 heating device and a separate battery 6 heat dissipation device, the battery temperature regulating device disclosed in the present disclosure utilizes the two characteristics of the liquid medium being able to flow and being able to conduct electricity, thereby effectively simplifying the structure of the battery temperature regulating device, which is conducive to the application of the battery temperature regulating device in small electronic devices.

[0036] It should be noted that the liquid medium is configured to generate heat when energized, which can be understood as the liquid medium being a conductor with a resistance value, that is, when the liquid medium is energized, the liquid medium actually generates heat as a resistor. When the liquid medium is energized, the pump 2 can stop working, that is, the liquid medium in the loop 100 stops circulating. In addition, the above-mentioned adjustment sheet 1 can be made of polyimide, which is not limited by the present disclosure.

[0037] In an exemplary embodiment of the present disclosure, the liquid medium may be a liquid metal. Here, the conductive property of the liquid metal is relatively stable, so that the liquid metal can stably generate heat when powered. Thus, the battery temperature regulating device of the present disclosure can achieve stable heating of the battery 6. Of course, in other embodiments, the liquid medium of the present disclosure may also be configured as an electrolyte that can generate heat when powered, and the present disclosure does not limit this.

[0038] It should be noted that the liquid metal in the present disclosure refers to metal that is liquid at room temperature (eg, -40°C to 40°C). The liquid metal may be a single liquid metal, such as liquid mercury, or a liquid metal alloy, and the present disclosure does not impose any restrictions on this.

[0039] In the exemplary embodiment of the present disclosure, referring to Figure 1 , Figure 4 and Figure 5 As shown in , the regulating sheet 1 may include at least two regulating parts 12 arranged in sequence, each regulating part 12 is provided with a first flow channel 11, and the pump 2 has at least two second flow channels 21, and each second flow channel 21 and the first flow channel 11 of the corresponding regulating part 12 form a loop 100. Here, for an electronic device that supports fast charging, the battery 6 of the electronic device generally includes at least two cells 61 arranged in parallel, that is, the battery 6 is generally a dual-cell 61 battery 6 or a multi-cell 61 battery 6, so that the regulating sheet 1 of the present disclosure, when applied to a dual-cell 61 battery 6 or a multi-cell 61 battery 6, can fit each regulating part 12 with a cell 61, so that each cell 61 can be heated or dissipated by the liquid medium in the corresponding loop 100. Therefore, the battery temperature regulating device of the present disclosure can also be applied to a dual-cell 61 battery 6 or a multi-cell 61 battery 6.

[0040] In some embodiments of the present disclosure, reference Figures 4 to 6As shown in the figure, at least one third flow channel 22 is connected between two adjacent second flow channels 21, and a first opening and closing member is provided on the third flow channel 22 (not shown in the figure). Here, when the dual-cell 61 battery 6 or the multi-cell 61 battery 6 is actually used, the temperature of the two adjacent cells 61 may be different, thereby affecting the performance of the battery 6. Therefore, the present disclosure can connect the two adjacent circuits 100 by using the third flow channel 22, and set the first opening and closing member to realize the opening and closing of the third flow channel 22. Specifically, when the temperature difference between the two adjacent cells 61 exceeds the preset difference, the first opening and closing member can open the third flow channel 22, so that the liquid medium with a higher temperature will flow to the liquid medium with a lower temperature, so that the temperature of the liquid medium in each circuit 100 can be dynamically adjusted, thereby balancing the heat dissipation performance or heating performance of the liquid medium in each circuit 100, thereby reducing the temperature difference between the two adjacent cells 61. When the temperature difference between two adjacent battery cells 61 is lower than a preset difference, the first opening and closing member can close the third flow channel 22 , so that the two adjacent circuits 100 are not connected to each other, and the liquid medium heats or dissipates the corresponding battery cells 61 in their respective circuits 100 .

[0041] In some embodiments of the present disclosure, reference Figure 4 and Figure 6 As shown in the figure, the second flow channel 21 includes a first branch flow channel 211, a second opening and closing member (not shown in the figure) is arranged on the first branch flow channel 211, and two third flow channels 22 are connected between two adjacent first branch flow channels 211 of two adjacent second flow channels 21; the battery temperature regulating device has a first working mode and a second working mode. In the first working mode, the first opening and closing member closes the third flow channel 22, and the second opening and closing member opens the first branch flow channel 211; in the second working mode, the first opening and closing member opens the third flow channel 22, and the second opening and closing member closes the first branch flow channel 211. Here, reference Figure 5 As shown in , when the temperature difference between two adjacent battery cells 61 is lower than the preset difference, the battery temperature regulating device can be in the first working mode, and the two adjacent circuits 100 are not connected to each other. Figure 6 As shown in , when the temperature difference between two adjacent battery cells 61 exceeds the preset difference, the battery temperature regulating device can be in the second working mode, and the two adjacent circuits 100 are connected together through the two third flow channels 22. At this time, since the first branch flow channel 211 is closed, no branch flow is generated at the first branch flow channel 211. In this way, the reference Figure 6 As shown in , two adjacent circuits 100 can together constitute a combined circuit, and the liquid medium can flow in the combined circuit 100. At this time, since no diversion occurs at the first diversion channel 211, it is more conducive to quickly reducing the temperature difference between two adjacent battery cells 61.

[0042] In some embodiments of the present disclosure, reference Figure 3As shown in , at least one temperature sensor 4 may be provided on each regulating part 12. In this way, the temperature sensor 4 may be used to detect the temperature of the corresponding battery cell 61, so that the battery temperature regulating device can accurately heat or dissipate heat for the battery cell 61. In addition, the temperature sensor 4 on each regulating part 12 may also be used to obtain the temperature difference between two adjacent battery cells 61. Here, according to some embodiments, reference Figure 3 As shown in , a flexible circuit board 8 may be provided on each adjusting portion 12 , the temperature sensor 4 may be electrically connected to the flexible circuit board 8 , and the flexible circuit board 8 may be electrically connected to the controller described below, thereby transmitting the signal of the temperature sensor 4 to the controller.

[0043] In some embodiments of the present disclosure, reference Figure 3 As shown in , at least two adjusting parts 12 can be arranged in sequence along the width direction of the adjusting sheet 1, and each adjusting part 12 can be provided with a temperature sensor 4 on both sides of the length direction of the adjusting sheet 1. In this way, the accuracy of the temperature detection of the battery cell 61 can be improved.

[0044] In the exemplary embodiment of the present disclosure, referring to Figure 1 as well as Figures 4 to 6 As shown in , the first flow channel 11 can be constructed as a continuous bend and have a second branch flow channel 111 and a third branch flow channel 112 that are alternately connected in sequence. The second branch flow channel 111 can extend along the length direction of the adjustment sheet 1, and the third branch flow channel 112 can extend along the width direction of the adjustment sheet 1. In this way, the arrangement space on the adjustment portion 12 can be fully utilized, and the contact area between the liquid medium and the battery cell 61 can be increased, thereby facilitating uniform heating or heat dissipation of the battery cell 61. Here, according to some embodiments, reference Figures 4 to 6 As shown in , the length of the second flow channel 21 may be greater than the length of the third flow channel 22 .

[0045] In the exemplary embodiment of the present disclosure, referring to Figure 1 As shown in , the regulating sheet 1 is provided with a heat conducting member 5 on at least one side in the thickness direction thereof, and the heat conducting member 5 also covers the pump 2. Here, the heat conducting member 5 can facilitate heat transfer. According to some embodiments, the heat conducting member 5 can be configured as a graphite sheet, which is not limited by the present disclosure. In addition, according to some embodiments, reference Figure 1 As shown in , the regulating sheet 1 may be provided with heat conducting members 5 on both sides in its thickness direction, wherein the heat conducting member 5 on one side may be attached to the battery 6, and the heat conducting member 5 on the other side may be attached to the rear housing of the electronic device.

[0046] According to a second aspect of the present disclosure, an electronic device is provided, comprising a battery 6, a mainboard 7 and the battery temperature regulating device as described above, Figure 1As shown in , the battery temperature regulating device is attached to the battery 6, and the electrical connector 3 can be constructed as a spring and electrically connected to the mainboard 7, so as to achieve electrical connection with the battery 6. The electronic device has all the beneficial effects of the above-mentioned battery temperature regulating device, which are not described in detail in the present disclosure. Here, in the actual arrangement, the above-mentioned regulating sheet 1 should at least cover the battery 6, that is, the projection of the regulating sheet 1 in the direction of its own thickness at least covers the projection of the battery 6 in the direction of its own thickness. According to some embodiments, the electronic device can be a mobile terminal such as a mobile phone, a tablet, etc.; it can also be a wearable terminal such as a smart watch, a bracelet, etc.; it can also be a laptop battery 6, etc. The present disclosure does not limit the specific type of the electronic device.

[0047] In some embodiments of the present disclosure, reference Figure 1 As shown in , the battery 6 may include at least two battery cells 61 arranged in parallel, and the battery temperature regulating device includes a regulating part 12 attached to each battery cell 61. In this way, the liquid medium in each regulating part 12 can heat or dissipate heat for the corresponding battery cell 61.

[0048] In some embodiments of the present disclosure, a controller may be provided on the main board 7, and the controller may be electrically connected to the temperature sensor 4, so as to facilitate automatic adjustment of the temperature of the battery 6. Here, the controller may also control the battery temperature adjustment device to automatically heat or dissipate heat for the battery 6. For example, when the temperature of the battery 6 is too low, the controller may control the battery 6 to energize the liquid medium through the main board 7 and the electrical connector 3; when the temperature of the battery 6 is too high, the controller may disconnect the energized state of the liquid medium and start the pump 2 to circulate the liquid medium in the loop 100. Of course, the controller may also control the battery temperature adjustment device to switch between the first working state and the second working state.

[0049] Next, the present disclosure will provide a detailed introduction to the battery temperature adjustment process in combination with the above specific implementations. Figures 1 to 6As shown in , when the electronic device is in a cold environment, the temperature of the battery 6 may be too low. Here, when the temperature sensor 4 detects that the temperature of the battery 6 is too low, the controller controls the battery 6 to power the liquid medium through the spring, and continuously heats the battery 6 through the heat generated by the liquid medium; when the electronic device is used for a long time, or the electronic device is in a high temperature environment, the temperature of the battery 6 may be too high. Here, when the temperature sensor 4 detects that the temperature of the battery 6 is too high, the controller controls the pump 2 to operate, so that the liquid medium circulates in the loop 100 to dissipate heat for the battery 6. In addition, when the battery 6 includes at least two battery cells 61 arranged in parallel, the battery temperature regulation device disclosed in the present invention can also adjust the temperature difference between two adjacent batteries 6. Specifically, when the temperature difference between two adjacent battery cells 61 is lower than the preset difference, the controller can control the battery temperature regulation device to switch to the first working mode; when the temperature difference between two adjacent battery cells 61 exceeds the preset difference, the controller can control the battery temperature regulation device to switch to the second working mode. Therefore, the battery temperature regulation device disclosed in the present invention can also adjust the temperature difference between two adjacent battery cells 61 while taking into account the heating and heat dissipation of the battery 6, thereby improving the performance of the battery 6 and realizing constant temperature control of the battery 6.

[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery temperature regulating device, characterized in that: include: An adjusting plate, wherein a first flow channel is arranged inside the adjusting plate; a pump, wherein the pump and the first flow channel form a circuit, wherein a conductive liquid medium is contained in the circuit, and wherein the liquid medium is configured to generate heat when powered; and An electrical connector partially extends into the loop and is used for electrically connecting to a battery.

2. The battery temperature regulating device according to claim 1, characterized in that: The liquid medium is liquid metal.

3. The battery temperature regulating device according to claim 1 or 2, characterized in that: The regulating plate comprises at least two regulating parts arranged in sequence, each of the regulating parts is provided with the first flow channel, the pump has at least two second flow channels, and each of the second flow channels and the first flow channel of the corresponding regulating part constitute the loop.

4. The battery temperature regulating device according to claim 3, characterized in that: At least one third flow channel is connected between two adjacent second flow channels, and a first opening and closing member is arranged on the third flow channel.

5. The battery temperature regulating device according to claim 4, characterized in that: The second flow channel includes a first branch flow channel, a second opening and closing member is provided on the first branch flow channel, and two third flow channels are connected between two adjacent first branch flow channels of two adjacent second flow channels; The battery temperature regulating device has a first working mode and a second working mode. In the first working mode, the first opening and closing member closes the third flow channel, and the second opening and closing member opens the first branch flow channel. In the second working mode, the first opening and closing member opens the third flow channel, and the second opening and closing member closes the first branch flow channel.

6. The battery temperature regulating device according to claim 3, characterized in that: Each of the adjusting parts is provided with at least one temperature sensor.

7. The battery temperature regulating device according to claim 6, characterized in that: At least two adjusting parts are arranged in sequence along the width direction of the adjusting piece, and each of the adjusting parts is provided with the temperature sensor on both sides of the length direction of the adjusting piece.

8. The battery temperature regulating device according to claim 1, characterized in that: The first flow channel is configured as a continuous bend and has a second flow channel and a third flow channel which are alternately connected in sequence. The second flow channel extends along the length direction of the adjustment sheet, and the third flow channel extends along the width direction of the adjustment sheet.

9. The battery temperature regulating device according to claim 1, characterized in that: The regulating sheet is provided with a heat conducting member on at least one side in the thickness direction thereof, and the heat conducting member also covers the pump.

10. An electronic device, characterized in that: It comprises a battery, a main board and the battery temperature regulating device according to any one of claims 1 to 9, wherein the battery temperature regulating device is attached to the battery, and the electrical connector is constructed as a spring and is electrically connected to the main board.

11. The electronic device according to claim 10, characterized in that: The battery comprises at least two battery cells arranged in parallel, and the battery temperature regulating device comprises a regulating part attached to each of the battery cells.

12. The electronic device according to claim 10, characterized in that: A controller is arranged on the main board, and the controller is electrically connected to the temperature sensor.

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