Constant-temperature control device, constant-temperature battery and electronic equipment

Abstract

The utility model discloses a constant-temperature control device, a constant-temperature battery and electronic equipment, and relates to the field of battery temperature control, the device comprises a heating system, the heating system comprises a deformation part, a first piezoelectric part and a heater, the first piezoelectric part is electrically connected with the heater, the deformation part extrudes or relaxes the first piezoelectric part, and the first piezoelectric part is electrically connected with the heater. Causing the first piezoelectric element to output a current to the heater; the liquid cooling system comprises a heat dissipation substrate and a liquid cooling pump, and the heat dissipation substrate is connected with the liquid cooling pump, so that the technical problem that the temperature of a battery cannot be kept constant for a long time due to the use of a phase change material in related technologies is effectively solved, and the technical effect of stabilizing the temperature of the battery for a long time is achieved.

Description

Technical Field

[0001] The present application relates to the field of battery temperature control, and in particular to a constant temperature control device, a constant temperature battery and an electronic device. Background Art

[0002] Lithium batteries are a form of power storage widely used in mobile devices, electric vehicles, energy storage systems, and other fields. They have the characteristics of high energy density, long life, and low self-discharge rate. However, the operating environment temperature of lithium batteries greatly affects their working performance. Therefore, the working efficiency of lithium batteries at different temperatures will vary significantly.

[0003] In the related art, a phase change material is wrapped around the outside of a lithium battery to form a battery thermostat. This solution mainly utilizes the physical property of the phase change material, which can absorb or release a large amount of heat at an almost constant temperature during the process of switching from solid to liquid, or from liquid to solid, to suppress the rapid rise or fall of the battery temperature and maintain the battery operating within a relatively constant temperature range.

[0004] However, different phase change materials correspond to different temperature ranges, and the range is limited, resulting in large temperature restrictions and the inability to stabilize the battery temperature for a long time. Utility Model Content

[0005] The embodiments of the present application provide a constant temperature control device, a constant temperature battery and an electronic device, thereby solving the technical problem in the related art that phase change materials cannot keep the battery temperature constant for a long time, and achieving the technical effect of stabilizing the battery temperature for a long time.

[0006] The present application provides a constant temperature control device, the constant temperature control device comprising:

[0007] A heating system, the heating system comprising a deformable member, a first piezoelectric member and a heater, the first piezoelectric member being electrically connected to the heater, the deformable member causing the first piezoelectric member to output current to the heater by squeezing or relaxing the first piezoelectric member;

[0008] A liquid cooling system comprises a heat dissipation substrate and a liquid cooling pump, wherein the heat dissipation substrate is connected to the liquid cooling pump.

[0009] Optionally, the deformable member includes a first deformable member and a second deformable member, and the first deformable member, the first piezoelectric member and the second deformable member are stacked in sequence.

[0010] Optionally, the deformable element is shape memory polymer cotton, the upper surface of the deformable element is a flexible material, and the upper surface is a contact surface between the deformable element and the first piezoelectric element.

[0011] Optionally, the liquid cooling system further includes a liquid cooling pipeline, wherein the liquid cooling pipeline is embedded in the heat dissipation substrate, and the heat dissipation substrate is connected to the liquid cooling pump via the liquid cooling pipeline.

[0012] Optionally, a second piezoelectric component and a cooling medium are provided in the cavity of the liquid cooling pump, and the cooling medium is caused to flow in the liquid cooling pump and the liquid cooling pipeline through the expansion and contraction of the second piezoelectric component.

[0013] Optionally, the second piezoelectric element is externally wrapped with an active cavity surrounded by an elastic substrate.

[0014] Optionally, the heater and the heat dissipation substrate together form a constant temperature control cavity, and the constant temperature control cavity is a closed or semi-closed type.

[0015] Optionally, the constant temperature control cavity is formed by the heater and the heat dissipation substrate being surrounded on different surfaces respectively.

[0016] Optionally, the heaters and the heat dissipation substrates are alternately arranged on any surface of the constant temperature control cavity.

[0017] In addition, the present application also proposes a constant temperature battery, characterized in that the constant temperature battery comprises:

[0018] A battery body; and, a constant temperature control device as described above, wherein the battery body is placed in a constant temperature control cavity.

[0019] Optionally, at least one surface of the battery body is in contact with and connected to the constant temperature control cavity.

[0020] In addition, the present application also proposes an electronic device, characterized in that the electronic device comprises:

[0021] A device body; and a constant temperature battery as described above, wherein the constant temperature battery is electrically connected to the device body to serve as a power source for the electronic device.

[0022] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0023] In the present application, the constant temperature control device includes a heating system, which includes a deformable member, a first piezoelectric member and a heater, wherein the first piezoelectric member is electrically connected to the heater, and the deformable member squeezes or relaxes the first piezoelectric member to cause the first piezoelectric member to output current to the heater; a liquid cooling system, which includes a heat dissipation substrate and a liquid cooling pump, wherein the heat dissipation substrate is connected to the liquid cooling pump; wherein the heater and the heat dissipation substrate together form a constant temperature control cavity, thereby effectively solving the technical problem in the related technology that the battery temperature cannot be kept constant for a long time due to the use of phase change materials, and achieving the technical effect of stabilizing the battery temperature for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A cross-sectional view of an embodiment of a constant temperature battery of the present application;

[0025] Figure 2 This is a top view of the structure of the deformation member in the second embodiment of the constant temperature control device of this application;

[0026] Figure 3 This is a cross-sectional view of the liquid cooling pump of Example 3 of the constant temperature control device of this application.

[0027] Description of Figure Numbers:

[0028] DETAILED DESCRIPTION

[0029] In the related art, the current constant temperature device of the battery is through the phase change material outside the battery. This method has a large temperature limit and cannot stabilize the battery temperature for a long time, and also increases the weight of the battery. Alternatively, a liquid cooling pipeline is arranged outside the battery, and the liquid circulation is driven by a pump. However, this structure is not suitable for use in low temperature environments and has high requirements for the liquid cooling circuit. The constant temperature control device used in the embodiment of the present application includes a heating system and a liquid cooling system, wherein the heating system includes a deformable member, a first piezoelectric member and a heater; the liquid cooling system includes a heat dissipation substrate and a liquid cooling pump, and the heater and the heat dissipation substrate together form a constant temperature control cavity for constant temperature control of the battery body in the cavity. Thereby achieving the technical effect of stabilizing the battery temperature for a long time.

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In addition, in the present application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] Embodiment 1

[0035] The first embodiment of the present application discloses a constant temperature control device, referring to Figure 1-Figure 3 The constant temperature control device includes: a heating system 10, the heating system 10 includes a deformable member 50, a first piezoelectric member 12 and a heater 14, the first piezoelectric member 12 is electrically connected to the heater 14, the deformable member 50 compresses or relaxes the first piezoelectric member 12, so as to cause the first piezoelectric member 12 to output current to supply the heater 14. A liquid cooling system 20, the liquid cooling system 20 includes a heat dissipation substrate 21 and a liquid cooling pump 23, the heat dissipation substrate 21 is connected to the liquid cooling pump 23.

[0036] In this embodiment, the heating system 10 is used to heat the battery body 30. The heating system 10 includes a deformable member 50, a first piezoelectric member 12, and a heater 14. When the deformable member 50 senses a change in ambient temperature or battery temperature, its volume will change accordingly, that is, it will deform, thereby squeezing at least two ends of the first piezoelectric member 12. Based on the positive piezoelectric effect, when the first piezoelectric member 12 is deformed, electric charges will be distributed at both ends of the first piezoelectric member 12, thereby generating current. The first piezoelectric member 12 is electrically connected to the heater 14, and the current output by the first piezoelectric member 12 is supplied to the heater 14, so that the heater 14 generates heat to heat the battery body 30. At this time, the first piezoelectric member 12 is a crystalline material.

[0037] Specifically, the first piezoelectric element 12 is piezoelectric ceramic.

[0038] The liquid cooling system 20 includes a heat dissipation substrate 21 and a liquid cooling pump 23, and the heat dissipation substrate 21 is connected to the liquid cooling pump 23. When the liquid cooling system 20 senses a change in the ambient temperature or the battery temperature, the liquid cooling pump 23 drives the cooling medium to flow through the heat dissipation substrate 21, so that the battery body 30 is cooled by the heat dissipation substrate 21. The constant temperature control cavity 40 is formed by the heater 14 and the heat dissipation substrate 21. That is, when the temperature of the battery body 30 in the constant temperature control cavity 40 is sensed to be higher than the preset working temperature, the battery body 30 is cooled by the surface where the heat dissipation substrate 21 is located. When the temperature of the battery body 30 in the constant temperature control cavity 40 is sensed to be lower than the preset working temperature, the battery body 30 is heated by the surface where the heater 14 is located.

[0039] Exemplarily, the preset operating temperature is the optimal operating temperature of the battery body 30, such as 25 degrees Celsius, 20 degrees Celsius, etc. It is related to the battery material and the working environment pressure.

[0040] That is, in this embodiment, the optimal operating temperature of the battery body 30 can be pre-set as the preset operating temperature, and then the battery body 30 can be temperature-controlled, thereby achieving long-term constant temperature control of the battery in any temperature range.

[0041] Based on the first embodiment, the second embodiment of the present application proposes a constant temperature control device. Figure 1-Figure 3 The deformable member 50 in the heating system 10 includes a first deformable member 11 and a second deformable member 13 , and the first deformable member 11 , the first piezoelectric member 12 and the second deformable member 13 are stacked in sequence.

[0042] In this embodiment, the first deformable member 11 and the second deformable member 13 are both placed in a box with an opening, wherein the deformable member 50 is placed in the box with the opening facing upward, and the surface of the deformable member 50 facing the opening is the upper surface, that is, when the deformable member 50 senses a temperature drop, its deformation is manifested as a bulge on the upper surface due to the close contact between the remaining surfaces and the inner wall of the box.

[0043] As an optional embodiment, the first deformable member 11 is placed in the first box, with the first upper surface facing the opening direction of the first box; the second deformable member 13 is placed in the second box, with the second upper surface facing the opening direction of the second box, wherein the first upper surface is the surface of the first deformable member 11, and the second upper surface is the surface of the second deformable member 13. At this time, the first deformable member 11, the first piezoelectric member 12, and the second deformable member 13 are placed in sequence, that is, the first upper surface and the second upper surface are in contact with two surfaces parallel to the first piezoelectric member 12, respectively, and at this time, the opening of the first box faces the opening of the second box.

[0044] In this embodiment, by placing the deformable member 50 in a box with an opening, when the deformable member 50 senses temperature changes, the remaining surface is in contact with the inner wall of the box, so that its deformation is manifested as a bulge on the upper surface, that is, the first upper surface and the second upper surface are bulged, and at the same time, the first piezoelectric member 12 is squeezed, so that the first piezoelectric member 12 generates current and outputs it to the heater 14. Automatic temperature control is achieved through the physical properties of the deformable member 50, the use of electronic devices is reduced, and the technical effect of reducing control errors is achieved.

[0045] Optionally, the deformable element 50 is a whole having an inner cavity, which wraps the first piezoelectric element 12 .

[0046] In this embodiment, the deformable member 50 is placed in the box, that is, the outer surface of the deformable member 50 contacts the inner wall of the box. When the deformable member 50 is deformed, the inner surface of the deformable member 50 presses the first piezoelectric member 12 inward, causing the first piezoelectric member 12 to output current to the heater 14.

[0047] As an optional implementation, the deformable member 50 in this embodiment is a shape memory polymer cotton 111, which is sensitive to temperature. When the temperature changes, it will change its shape accordingly. The upper surface of the deformable member 50 is a flexible material 112, and the upper surface is the contact surface between the deformable member 50 and the first piezoelectric member 12.

[0048] As an optional implementation, the deformable member 50 in this embodiment is an air bag, and the air bag is inflated to cause it to deform.

[0049] In this embodiment, the deformable member 50 contacts the battery body 30 , or the box in which the deformable member 50 is located contacts the battery body 30 , so that the heat of the battery body 30 can be transferred to the deformable member 50 , and the deformable member 50 generates corresponding deformation according to the received heat.

[0050] Exemplarily, it is determined that the deformable member 50 is in the first state when the battery temperature is equal to the preset operating temperature, and the first piezoelectric member 12 does not supply an operable current to the heater 14. When the battery temperature is higher than the preset operating temperature, the deformable member 50 is in the second state, and the volume of the deformable member 50 in the second state is reduced compared to the first state, so no pressure is applied to the first piezoelectric member 12. When the battery temperature is lower than the preset operating temperature, the deformable member 50 is in the third state, and the volume of the deformable member 50 in the third state is increased compared to the first state, so pressure is applied to the first piezoelectric member 12, so that the first piezoelectric member 12 generates an electric charge under the action of the positive piezoelectric effect, and then generates a current and outputs it to the heater 14, so that the heater 14 works.

[0051] In this embodiment, the heating system 10 is composed of shape memory polymer cotton 111, piezoelectric ceramics and heater 14. When the temperature is higher than room temperature, the volume of the shape memory polymer material shrinks, and when the temperature is lower than room temperature, the volume returns to its original size. The shape memory polymer cotton 111 is filled in the box, and the upper surface is a flexible material 112. When the shape memory polymer cotton 111 filled therein restores its shape, the flexible material 112 is lifted up, thereby applying pressure to the piezoelectric ceramics to generate a piezoelectric effect. The current generated by the piezoelectric effect is supplied to the heater 14 to heat the battery body 30.

[0052] Furthermore, the upper surface of the deformable member 50 is a flexible material 112, and the upper surface is the contact surface between the deformable member 50 and the first piezoelectric member 12. By attaching the flexible material 112 to the upper surface of the deformable member 50, when the volume of the deformable member 50 increases, the pressure applied to the first piezoelectric member 12 is more uniform, thereby improving the control accuracy of the output current of the first piezoelectric member 12, and improving the heating effect and heating accuracy.

[0053] Based on the first embodiment, the third embodiment of the present application proposes a constant temperature control device, referring to Figure 1-Figure 3 The liquid cooling system 20 further includes a liquid cooling pipeline 22 , wherein the liquid cooling pipeline 22 is embedded in the heat dissipation substrate 21 , and the heat dissipation substrate 21 is connected to the liquid cooling pump 23 via the liquid cooling pipeline 22 .

[0054] In this embodiment, a cooling medium flows in the liquid cooling pipe 22, and the liquid cooling pipe 22 is embedded in the heat dissipation substrate 21. The specific embedding method is not limited, and it can be arranged in a serpentine or spiral manner, thereby increasing the contact surface between the heat dissipation substrate 21 and the cooling medium and improving the cooling effect. The heat dissipation substrate 21 is connected to the liquid cooling pump 23 through the liquid cooling pipe 22, that is, the liquid cooling pump 23 drives the cooling medium to flow in the liquid cooling pipe 22 through the output pressure, so that the heat dissipation substrate 21 can exert a cooling effect.

[0055] Furthermore, a second piezoelectric element 232 and a cooling medium are disposed in the cavity of the liquid cooling pump 23, and the cooling medium is caused to flow in the liquid cooling pump 23 and the liquid cooling pipeline 22 through the expansion and contraction of the second piezoelectric element 232. That is, the liquid cooling pump includes a liquid cooling pump housing 231 and a second piezoelectric element 232.

[0056] In this embodiment, the liquid outlet and the liquid inlet of the liquid cooling pipeline 22 are respectively connected to the surface of the liquid cooling pump 23, and are connected to the cooling medium in the liquid cooling pump 23. The liquid cooling pump 23 performs reciprocating telescopic motion through the second piezoelectric element 232 arranged in the cavity, so that the cooling medium flows out from the liquid outlet to the liquid cooling pipeline 22, and flows into the cavity of the liquid cooling pump 23 from the liquid inlet, so that the cooling medium flows in the liquid cooling pump 23 and the liquid cooling pipeline 22, thereby achieving the cooling and heat exchange effect of the heat dissipation substrate 21.

[0057] In this embodiment, the second piezoelectric element 232 may be in fixed contact with the inner cavity of the liquid cooling pump 23 , or may be suspended in the cavity of the liquid cooling pump 23 .

[0058] Furthermore, in order to improve the driving effect of the liquid cooling pump 23 , the exterior of the second piezoelectric element 232 is wrapped with an active cavity surrounded by an elastic substrate 233 .

[0059] In this embodiment, an active cavity surrounded by an elastic substrate 233 is wrapped on the outside of the second piezoelectric element 232, so that the second piezoelectric element 232 drives the elastic substrate 233 to bend and deform during the telescopic movement, thereby changing the volume of the active cavity, and further allowing the active cavity to drive the cooling medium in the liquid cooling pump 23 to flow.

[0060] Since the second piezoelectric element 232 is wrapped with an active cavity surrounded by an elastic substrate 233, the contact area between the second piezoelectric element 232 and the cooling medium is increased during expansion and contraction, thereby increasing the flow rate of the cooling medium and improving the heat dissipation capacity of the heat dissipation substrate 21.

[0061] Furthermore, the second piezoelectric cavity is made of crystalline material, for example, the second piezoelectric element 232 is made of piezoelectric ceramics. The second piezoelectric element 232 is connected to an AC power supply, so that when the battery temperature is higher than the preset operating temperature, the AC power supply outputs AC power to the second piezoelectric element 232. Based on the inverse piezoelectric effect of the crystal material, the second piezoelectric element 232 produces telescopic movement under the action of AC power. This is because the AC power causes the distribution of positive and negative charges of the second piezoelectric element 232 to change back and forth, thereby producing telescopic movement.

[0062] In this embodiment, the liquid cooling system 20 is composed of a heat dissipation substrate 21, a liquid cooling pipeline 22 and a liquid cooling pump 23. The heat dissipation substrate 21 is located on the lower surface of the battery, and the liquid cooling pipeline 22 is embedded in the heat dissipation substrate 21, which can enhance heat exchange. The liquid cooling pipeline 22 is driven by a liquid cooling pump 23. The liquid cooling pump 23 is made using the inverse piezoelectric effect of piezoelectric ceramics. It has no motor and no rotating parts. The piezoelectric ceramic sheet is its power source. Driven by alternating current, the piezoelectric ceramic shortens or elongates laterally, and at the same time drives the elastic substrate 233 to bend and deform, thereby changing the volume of the pump chamber. When the volume of the pump chamber increases, the pressure in the chamber decreases, and the cooling medium flows into the pump chamber; when the volume of the pump chamber decreases, the pressure in the chamber increases, and the cooling medium is squeezed out of the pump chamber.

[0063] Since the first piezoelectric element 12 and the second piezoelectric element 232 are made of crystalline materials, they output current or produce deformation based on the piezoelectric effect, thereby driving the heater 14 and the heat dissipation substrate 21 to work, that is, the piezoelectric pump replaces the ordinary pump, thereby reducing the mechanical noise caused by the ordinary pump in the constant temperature control device. At the same time, the use of electronic devices is reduced, and the control error is reduced.

[0064] Based on any of the above embodiments, the fourth embodiment of the present application proposes a constant temperature control device, referring to Figure 1-Figure 3 The heater 14 and the heat dissipation substrate 21 together form a constant temperature control cavity 40. The constant temperature control cavity 40 formed by the heater 14 and the surface of the heat dissipation substrate 21 is a closed or semi-closed type.

[0065] In this embodiment, the surfaces where the heater 14 and the heat sink are located are enclosed to form a thermostatic control cavity 40, and the thermostatic control cavity 40 is closed or semi-closed. When the thermostatic control cavity 40 is closed, since the battery body 30 inside the thermostatic control cavity 40 is in a closed environment, the heating efficiency of the heater 14 and the cooling efficiency of the heat dissipation substrate 21 are improved. When the thermostatic control cavity 40 is semi-closed, the unclosed surface can be used to place the deformable member 50 and the first piezoelectric member 12, thereby reducing the volume of the thermostatic control cavity 40, and realizing the heat dissipation and heating functions of the battery without increasing the weight too much.

[0066] As an optional embodiment, the constant temperature control cavity 40 is formed by the heater 14 and the heat dissipation substrate 21 being respectively surrounded on different surfaces, that is, the heater 14 and the heat dissipation substrate 21 are on different surfaces. By arranging the battery body 30 in the constant temperature control cavity 40, the heater 14 and the heat dissipation substrate 21 are heated or dissipated based on different surfaces of the battery body 30, thereby improving the constant temperature control effect.

[0067] Exemplarily, the deformable member 50 in the constant temperature control device is placed on the first surface of the battery body 30 , the heater 14 is placed on the battery body 30 , and the remaining surface adjacent to the first surface, and the heat dissipation substrate 21 is placed on the opposite side of the first surface of the battery body 30 .

[0068] As another optional embodiment, any surface of the thermostatic control cavity 40 is staggered by the heater 14 and the heat dissipation substrate 21. That is, the heater 14 and the heat dissipation substrate 21 are distributed in a strip shape and staggered on the same surface, so that any surface of the thermostatic control cavity 40 can be heated and dissipated, thereby improving the thermostatic control effect. At the same time, the number of surfaces of the thermostatic control cavity 40 can be reduced, thereby reducing the volume of the thermostatic control cavity 40.

[0069] The present application also proposes a constant temperature battery 100, referring to Figure 1-Figure 3 The constant temperature battery 100 includes a battery body 30 ; and a constant temperature control device as described in any of the above embodiments, wherein the battery body 30 is placed in a constant temperature control cavity 40 .

[0070] In this embodiment, the battery body 30 is placed in a constant temperature control cavity 40, and the battery body 30 is dissipated through the surface of the constant temperature control cavity 40 when the temperature is higher than the preset working temperature, and is heated when the temperature is lower than the preset working temperature, so that the battery body 30 is maintained in a working environment with a preset working temperature.

[0071] Optionally, at least one surface of the battery body 30 is in contact with and connected to the constant temperature control cavity 40 , thereby improving the constant temperature control effect of the constant temperature control cavity 40 on the battery body 30 .

[0072] As an optional embodiment, at least one surface of the battery body 30 is in contact with and connected to the constant temperature control cavity 40, wherein the deformation member 50 and the heater 14 are arranged on different surfaces of the battery body 30, that is, the deformation member 50 and the heat dissipation substrate 21 are arranged on two opposite surfaces of the battery body 30, and the heater 14 is placed on at least one surface other than the above two surfaces.

[0073] Exemplarily, the heating chamber enclosed by the heater 14 wraps the remaining surface of the battery body 30 .

[0074] Exemplarily, the battery body 30 is a hexahedron, at least one surface of which is in contact and connected with the constant temperature control cavity 40, wherein the deformation member 50 and the heater 14 are arranged on different surfaces of the battery body 30, that is, the deformation member 50 and the heat dissipation substrate 21 are arranged on two opposite surfaces of the battery body 30, and the heating cavity enclosed by the heater 14 wraps the remaining four surfaces of the battery body 30.

[0075] As an optional implementation, at least one surface of the battery body 30 is in contact with and connected to the constant temperature control cavity 40 , wherein the deformable member 50 and the heater 14 are disposed on the same surface of the battery body 30 .

[0076] Optionally, the various surfaces of the battery body 30 can be separated from the surface of the constant temperature control cavity 40 by disassembly, that is, the various surfaces of the constant temperature control cavity 40 can change the surface of the docking battery body 30, thereby improving the convenience of assembling the constant temperature battery 100. At the same time, when the ambient temperature of the battery body 30 is too high or too low, the heater 14 or the heat dissipation substrate 21 can be disassembled to make contact with the surface of the battery body 30 with the largest area, thereby improving the constant temperature control effect.

[0077] Exemplarily, when the ambient temperature of the battery body 30 is too high, the heat dissipation substrate 21 is connected to the surface with the largest area of ​​the battery body 30, or covers multiple surfaces to improve the heat dissipation effect. When the ambient temperature of the battery body 30 is too low, the heater 14 is connected to the surface with the largest area of ​​the battery body 30, or covers multiple surfaces to improve the heating effect.

[0078] The present application also proposes an electronic device, referring to Figure 1-Figure 3 The electronic device comprises a device body and the constant temperature battery 100 described in any of the above embodiments. The constant temperature battery 100 is electrically connected to the device body and serves as a power source for the electronic device.

[0079] In this embodiment, the constant temperature battery 100 serves as a power source of the electronic device, is electrically connected to a device body of the electronic device, and supports the operation of the electronic device by outputting current.

[0080] Exemplarily, the electronic device is a wearable device, such as a VR device. The constant temperature battery 100 can be inside the device body of the electronic device, or can be arranged outside the device body. When the constant temperature battery 100 is arranged inside the device body, its volume and output power are constrained by the design specifications of the electronic device, but the electronic device is more beautiful, and due to the protection of the device body, the working environment of the constant temperature battery 100 is more stable.

[0081] When the constant temperature battery 100 is disposed outside the device body, its volume can be larger than when it is disposed inside the device body, so the volume of the constant temperature control device can also be larger, thereby improving the constant temperature control efficiency.

[0082] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the utility model concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A constant temperature control device, characterized in that: The constant temperature control device comprises: A heating system, the heating system comprising a deformable member, a first piezoelectric member and a heater, the first piezoelectric member being electrically connected to the heater, the deformable member causing the first piezoelectric member to output current to the heater by squeezing or relaxing the first piezoelectric member; A liquid cooling system comprises a heat dissipation substrate and a liquid cooling pump, wherein the heat dissipation substrate is connected to the liquid cooling pump.

2. The constant temperature control device according to claim 1, characterized in that: The deformable member includes a first deformable member and a second deformable member, and the first deformable member, the first piezoelectric member and the second deformable member are stacked in sequence.

3. The constant temperature control device according to claim 2, characterized in that: The deformable element is a shape memory polymer cotton, the upper surface of the deformable element is a flexible material, and the upper surface is a contact surface between the deformable element and the first piezoelectric element.

4. The constant temperature control device according to claim 1, characterized in that: The liquid cooling system further includes a liquid cooling pipeline, wherein the liquid cooling pipeline is embedded in the heat dissipation substrate, and the heat dissipation substrate is connected to the liquid cooling pump via the liquid cooling pipeline.

5. The constant temperature control device according to claim 4, characterized in that: A second piezoelectric component and a cooling medium are arranged in the cavity of the liquid cooling pump. The cooling medium is caused to flow in the liquid cooling pump and the liquid cooling pipeline through the expansion and contraction of the second piezoelectric component.

6. The constant temperature control device according to claim 5, characterized in that: The second piezoelectric element is externally wrapped with an active cavity surrounded by an elastic substrate.

7. The constant temperature control device according to any one of claims 1 to 6, characterized in that: The heater and the heat dissipation substrate together form a constant temperature control cavity, and the constant temperature control cavity is a closed type or a semi-closed type.

8. The constant temperature control device according to claim 7, characterized in that: The constant temperature control cavity is formed by the heater and the heat dissipation substrate being surrounded on different surfaces.

9. The constant temperature control device according to claim 7, characterized in that: The heaters and the heat dissipation substrates are alternately arranged on any surface of the constant temperature control cavity.

10. A constant temperature battery, characterized in that: The constant temperature battery comprises: a battery body; and The constant temperature control device according to any one of claims 1 to 9, wherein the battery body is placed in a constant temperature control cavity.

11. The constant temperature battery according to claim 10, characterized in that: At least one surface of the battery body is in contact with and connected to the constant temperature control cavity.

12. An electronic device, characterized in that: The electronic device comprises: The device body; and The constant temperature battery as described in any one of claims 10-11, wherein the constant temperature battery is electrically connected to the device body to serve as a power source for the electronic device.

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