JP3217906U - Charging device provided with thermoelectric temperature difference unit - Google Patents

Abstract

A charging device including a thermoelectric temperature difference unit that achieves improvement of battery charging efficiency and ensuring safety is provided. The charging device includes at least one battery module (10) including a battery (11) and a thermoelectric temperature difference unit (12), and the battery is thermoelectrically connected so that a first surface (121) of the thermoelectric temperature difference unit is in contact with a surface (114) of the battery. There is a temperature difference between the first surface 121 and the second surface 122 of the thermoelectric temperature difference unit when the power supply input terminals 123 of the thermoelectric temperature difference unit receive the power supply voltage and are installed in the temperature difference unit. By cooling or raising the temperature of the battery, charging efficiency is improved and heating of the battery is prevented. [Selection] Figure 2

Description

  In particular, the present invention relates to a charging device including a thermoelectric temperature difference unit.

  In recent years, environmental protection and energy saving are one of the main trends in the development of science and technology, so rechargeable batteries that can be repeatedly charged and discharged are rechargeable batteries that meet dry battery standards, Widely used in various types of daily life and industrial fields, from small ones such as dust collectors to large ones such as electric motorcycles and electric cars. In order to improve, the charging efficiency and security of the rechargeable battery are important features that are considered and improved at the same time for this kind of charging products. Rechargeable batteries made of any kind of material have a battery temperature range that works properly, and if the battery temperature is higher or lower than the temperature range, both are good for charge / discharge operation of the rechargeable battery. Absent.

  For example, the charging process naturally involves the release of thermal energy, but if the charging speed is high, the charging current increases, and the battery temperature rises due to a large amount of thermal energy generated in the charging battery. . If the generated thermal energy is not eliminated in a timely manner, the temperature at which the rechargeable battery is charged rises unbearably and becomes overheated, and there is a risk that the battery will be damaged and may be damaged by explosion. In the conventional heat dissipation method, the air around the battery is flow-driven by a fan, and the heat energy around the battery is usually eliminated by the air flow. However, since the heat transfer capability of air is limited and the temperature of the battery cannot be quickly cooled, overheating tends to occur when the charging current is large. On the other hand, when the rechargeable battery is placed in an environment where the temperature is much lower than the proper operating environment temperature range, the electrolyte in the rechargeable battery condenses, and the charge efficiency of the rechargeable battery is greatly reduced. The storable power capacity is greatly reduced.

  As described above, in order to ensure that the rechargeable battery can be charged efficiently and to ensure safety in use and avoid overheating, the use environment of the rechargeable battery is limited by the environmental temperature. Therefore, the conventional rechargeable battery must be further improved.

  In view of the fact that any rechargeable battery has a temperature range in which the rechargeable battery operates properly, if the battery temperature is lower or higher than the temperature range, any rechargeable battery is not good for the charge / discharge operation, and thus a danger occurs. There is a fear. The present invention provides a charging device including a thermoelectric temperature difference unit including at least one battery module including a battery including a positive terminal and a negative terminal for receiving and charging a charging voltage and a thermoelectric temperature difference unit. The thermoelectric temperature difference unit includes a first surface and a second surface facing each other, and both power input ends, and the battery has a first surface of the thermoelectric temperature difference unit in contact with the surface of the battery. It is installed on the first surface of the thermoelectric temperature difference unit. When both power input terminals of the thermoelectric temperature difference unit receive a supply voltage, there is a temperature difference between the first surface and the second surface of the thermoelectric temperature difference unit.

  The thermoelectric temperature difference unit is a thermoelectric cooler, more preferably a semiconductor thermoelectric cooling chip. The thermoelectric cooler is made of two different types of thermoelectric materials, and due to the thermoelectric effect principle, when a voltage is applied to both ends of different thermoelectric materials of the thermoelectric cooler, there is a temperature difference at both ends. When the polarity of the voltage provided across the thermoelectric cooler is reversed, the temperature difference across the ends is also reversed. That is, by providing the power supply voltage, the thermoelectric temperature difference unit makes the temperature of the first surface lower or higher than the temperature of the second surface. Thereby, the temperature of the battery can be lowered or raised based on different battery temperatures and battery usage conditions so as to ensure battery charging efficiency and security for different environmental conditions.

The external appearance perspective schematic diagram of a charging device provided with the thermoelectric temperature difference unit which concerns on this invention. The isolation | separation perspective schematic diagram of a charging device provided with the thermoelectric temperature difference unit which concerns on this invention. The circuit block schematic diagram of a charging device provided with the thermoelectric temperature difference unit which concerns on this invention. FIG. 7 is a perspective schematic view of a fifth preferred embodiment of a charging apparatus including a thermoelectric temperature difference unit according to the present invention. The perspective view schematic diagram of a part of module of a charging device 5th Example provided with the thermoelectric temperature difference unit which concerns on this invention.

  As shown in FIGS. 1 and 2, the present invention is a charging device including a thermoelectric temperature difference unit, and includes at least one battery module 10. The at least one battery module 10 includes a battery 11 and a thermoelectric temperature difference unit 12, respectively. The at least one battery 11 includes a positive terminal 111 and a negative terminal 112, respectively. The positive terminal 111 and the negative terminal 112 are for receiving and charging a charging voltage. The at least one thermoelectric temperature difference unit 12 includes a first surface 121 and a second surface 122 that face each other, and includes both power input ends 123. In the battery 11, the battery 11 is installed on the first surface 121 of the thermoelectric temperature difference unit 12 such that the first surface 121 of the thermoelectric temperature difference unit 12 contacts the surface of the battery 11. When both power supply input terminals 123 of the temperature difference unit 12 receive a power supply voltage, a temperature difference is generated between the first surface 121 and the second surface 122 of the thermoelectric temperature difference unit 12.

  In this preferred embodiment, preferably the thermoelectric temperature difference unit 12 is a thermoelectric cooler, more preferably a semiconductor thermoelectric cooling chip. A thermoelectric cooler is made of two different types of thermoelectric materials. Based on the thermoelectric effect principle, when a voltage is applied to both ends of different thermoelectric materials of the thermoelectric cooler, a temperature difference occurs between the two ends. If the polarity of the voltage provided across the thermoelectric cooler is reversed, the temperature difference across the ends is also reversed. That is, the thermoelectric temperature difference unit 12 can make the temperature of the first surface 121 lower or higher than the temperature of the second surface 122 by providing power supply voltages having opposite polarities. Thereby, the battery 11 can be lowered or raised based on different battery temperatures and usage conditions of the battery 11 so as to ensure the charging efficiency and security of the battery 11 for different environmental conditions. Moreover, it is preferable to apply a heat conductive paste layer between the first surface 121 of the thermoelectric temperature difference unit 12 and the surface of the battery 11 so as to further increase the heat conduction speed.

  In the first preferred embodiment of the present invention, the power supply voltage is the first voltage, and the thermoelectric temperature difference unit 12 makes the temperature of the first surface 121 lower than the temperature of the second surface 122. The surface of the battery 11 is affixed on the first surface 121 of the thermoelectric temperature difference unit 12, and the temperature of the first surface 121 is greater than the temperature of the second surface 122 due to the action of the thermoelectric temperature difference unit 12. The thermoelectric temperature difference unit 12 is held low, and the thermal energy generated in the battery 11 is conducted to the second surface 122 through the first surface 121 to dissipate heat. As a result, the temperature difference is maintained and the heat conduction action is performed in a direct contact manner, so that the cooling temperature is lower than the environmental temperature, effectively improving the cooling speed, and the battery 11 is charged with a larger current. In addition, the charging efficiency is improved and the risk of overheating or explosion due to the temperature of the battery 11 being charged being too high can be prevented.

  In the second preferred embodiment of the present invention, the power supply voltage is the second voltage, and the second voltage is opposite in polarity to the first voltage, so that the thermoelectric temperature difference unit is based on the thermoelectric effect principle. 12 makes the temperature of the first surface 121 higher than the temperature of the second surface 122. That is, when the battery 11 is in an environment where the temperature is too low, as long as the second voltage is provided to the both power input terminals 123 of the thermoelectric temperature difference unit 12, the thermoelectric temperature difference unit 12 is connected to the first surface 121. Since the temperature can be maintained higher than the temperature of the second surface 122 and the surface of the battery 11 is pasted on the first surface 121 of the thermoelectric temperature difference unit 12, the temperature of the battery 11 is By maintaining the temperature higher than the environmental temperature, the object of avoiding that the battery temperature is too low and the charging efficiency is not good or the storable power capacity of the battery 11 is reduced is achieved.

  As shown in FIG. 2, in the third preferred embodiment of the present invention, preferably, the shape of the at least one thermoelectric temperature difference unit 12 matches the outer shape of the battery 11 and directly contacts with a large area. In a manner, an average and effective thermal energy conduction effect is achieved. For example, the battery 11 is a columnar battery, and includes both opposite end portions 113 and annular side surfaces 114, the both end portions 113 are respectively installed at opposite ends of the annular side surface 114, and The positive terminal 111 and the negative terminal 112 of the battery 11 are respectively installed at both end portions 113 of the battery 11. Therefore, the thermoelectric temperature difference unit 12 circulates around the battery 11 and is formed into a hollow annular column, in which the first surface 121 is directed inward but the second surface 122 is directed outward. When the thermoelectric temperature difference unit 12 is in direct contact with the annular side surface 114 of the columnar battery 11 on the first surface 121 and the thermoelectric temperature difference unit 12 receives the power supply voltage, Since the temperature of the surface 121 is lower or higher than the temperature of the second surface 122 and the annular side surface 114 of the battery 11 is in contact with the first surface 121 and conducts heat, the columnar battery on average 11 serves to lower the temperature or raise the temperature.

  As shown in FIG. 3, in a fourth preferred embodiment of the present invention, the power supply module 21 further includes a power supply module 21 to which an external power supply (not shown) is electrically connected so as to receive an external voltage. The charging voltage and the feeding voltage are generated by converting the external voltage. Therefore, the positive terminal 111 and the negative electrode of the battery 11 are electrically connected to the power supply module 21 so as to receive the charging voltage and perform charging. The both power input terminals 123 of the thermoelectric temperature difference unit 12 are electrically connected to the power supply module 21 so as to receive the power supply voltage.

  As shown in FIG. 4 and FIG. 5, the number of the at least one battery module 10 is preferably plural, the battery modules 10 are arranged in a matrix, and the positive terminal of the battery 11 of each battery module 10 111 are jointly directed in the first direction A.

  In the fifth preferred embodiment of the present invention, the housing 22 further includes a housing space 220, in which the at least one battery module 10 and the power supply module 21 are included in the housing space 220. It is installed inside.

  As shown in FIG. 5, in the present preferred embodiment, it preferably further includes a positive electrode conductive sheet 23 and a negative electrode conductive sheet 24, and the positive electrode conductive sheet 23 is electrically connected to the positive terminal 111 of each battery 11. However, the negative electrode conductive sheet 24 is electrically connected to the negative terminal 112 of each battery 11, and the positive electrode conductive sheet 23 and the negative electrode conductive sheet 24 are connected to the power supply module 21 so as to receive the charging voltage. By being electrically connected, the battery 11 of each battery module 10 is electrically connected to the power supply module 21 via the positive electrode conductive sheet 23 and the negative electrode conductive sheet 24, and receives the charging voltage. It becomes like this.

  Thereby, by aligning the plurality of battery modules 11, it is possible to form a charging device having a large capacity and provide the user with a plurality of times the power capacity, but the thermoelectric temperature difference unit of each of the battery modules 10 When the temperature of the battery 11 is lowered or heated by the battery 12, the charging efficiency and security of the battery 11 in each battery module 10 are ensured, so that the charging efficiency and security of the entire charging device are improved.

  In this preferred embodiment, the power supply module 21 preferably further includes a fan device 25 and converts the external voltage to generate a drive voltage. The housing 22 is further formed with a fan opening 221 and a ventilation hole 222, and the fan opening 221 communicates with the housing space 220. The fan device 25 is installed in the fan opening 221 and is electrically connected to the power supply module 21 to receive the drive voltage.

  In the sixth preferred embodiment of the present invention, the power supply module 21 further includes a changeover switch 211. When the changeover switch 211 is in the first state, that is, when the changeover switch 211 is switched to the first range, the power supply voltage generated in the power supply module 21 is the first voltage, and each thermoelectric temperature. The difference unit 12 makes the temperature of the first surface 121 lower than the temperature of the second surface 122. When the changeover switch 211 is in the second state, that is, when the changeover switch 211 is switched to the second range, the power supply voltage generated in the power supply module 21 is the second voltage, and each thermoelectric The temperature difference unit 12 makes the temperature of the first surface 121 higher than the temperature of the second surface 122. Among them, the second voltage is opposite in polarity to the first voltage.

  Thereby, the user can cool or raise the temperature of each battery 11 based on the state of the environmental temperature where the charging device exists. If the charging device is in a relatively high temperature environment and each of the batteries 11 may become too hot during charging with relatively large power, and the user needs to cool it, By switching the changeover switch 211 to the first range, the power supply voltage generated in the power supply module 21 becomes the first voltage. Accordingly, each thermoelectric temperature difference unit 12 sets the temperature of the first surface 121. By making the temperature lower than the temperature of the second surface 122, the thermal energy generated in each battery 11 is conducted to the second surface 122 via the first surface 121 of the thermoelectric temperature difference unit 12, and the heat radiation temperature drop is reduced. Figured.

  Furthermore, the fan device 25 is operated by receiving the starting voltage at the same time so that the heat energy generated in each battery 11 in the accommodation space 220 exits the charging device through an air convection zone. Since accelerated flow can be generated in the air in the housing space 220 of the housing 22 and the air outside the housing 22, the temperature lowering efficiency of the batteries 11 by the thermoelectric temperature difference units 12 is further improved.

  Conversely, when the charging device is in an environment where the environmental temperature is lower than the temperature at which each battery 11 operates properly, the user switches the changeover switch 211 to the second range to generate the power supply module 21. In this case, each of the thermoelectric temperature difference units 12 makes the temperature of the first surface 121 higher than the temperature of the second surface 122, so that the power supply voltage is changed to the second voltage. Since the battery 11 is heated, the charging efficiency and the storage capacity of each battery 11 are improved.

  The above are only preferred embodiments of the present invention and are not limited to any form of the present invention. Although the present invention has been posted as described above by means of preferred embodiments, it is not limited thereto. Any person skilled in the art can change or modify the technical contents described above by using the technical contents described above without departing from the technical solution of the present invention, so that equivalently modified embodiments can be obtained. As long as they do not depart from the contents of the above, any simple amendments, equivalent changes, and modifications made to the above embodiments based on the gist of the technology of the present invention fall within the scope of the technical solution of the present invention.

10 Battery module
11 batteries
111 Positive terminal
112 Negative terminal
113 end
114 annular side surface 12 thermoelectric temperature difference unit
121 1st surface 122 2nd surface
123 Power input terminal
21 Power supply module
211 changeover switch 22 housing
220 Housing space 221 Fan opening
222 Ventilator 23 Positive Electrode Conductive Sheet
24 Negative Electrode Conductive Sheet 25 Fan Device

Claims (10)

A battery having a positive terminal and a negative terminal for receiving a charging voltage;
A charging device comprising a thermoelectric temperature difference unit comprising at least one battery module, each comprising a thermoelectric temperature difference unit comprising a first surface and a second surface facing each other, and each comprising a power supply input terminal,
The battery is installed on the first surface of the thermoelectric temperature difference unit such that the first surface of the thermoelectric temperature difference unit contacts the surface of the battery,
A thermoelectric temperature difference unit having a temperature difference between the first surface and the second surface of the thermoelectric temperature difference unit when both power input terminals of the thermoelectric temperature difference unit receive a supply voltage. A charging device provided.   2. The thermoelectric temperature difference according to claim 1, wherein when the power supply voltage is a first voltage, a temperature of the first surface of the thermoelectric temperature difference unit is lower than a temperature of the second surface of the thermoelectric temperature difference unit. A charging device comprising the unit. When the power supply voltage is a second voltage, the temperature of the first surface of the thermoelectric temperature difference unit is higher than the temperature of the second surface of the thermoelectric temperature difference unit,
The charging device including a thermoelectric temperature difference unit according to claim 2, wherein the second voltage has a polarity opposite to that of the first voltage. The battery is a columnar battery, and includes both end portions and an annular side surface, the both end portions are respectively installed at opposite ends of the annular side surface, and the positive terminal and the negative terminal are respectively connected to the battery. Formed at both ends,
The charging device including the thermoelectric temperature difference unit according to claim 1, wherein a first surface of the thermoelectric temperature difference unit is attached to an annular side surface of the columnar battery. A power supply module that is electrically connected to an external power source to receive an external voltage and generates the charging voltage and the power supply voltage by converting the external voltage;
A positive terminal and a negative terminal of the battery are each electrically connected to the power supply module to receive the charging voltage,
The charging device having a thermoelectric temperature difference unit according to claim 3, wherein both power input terminals of the thermoelectric temperature difference unit are electrically connected to the power supply module. The number of the at least one battery module is plural, and these battery modules are arranged in a matrix, and the positive terminals of the batteries of these battery modules are jointly directed in the first direction,
The positive electrode conductive sheet is electrically connected to the positive terminal of the battery of each battery module,
The negative electrode conductive sheet is electrically connected to the negative terminal of the battery of each battery module,
The charging device including a thermoelectric temperature difference unit according to claim 5, wherein the positive electrode conductive sheet and the negative electrode conductive sheet are further electrically connected to the power supply module so as to receive the charging voltage.   The charging device including the thermoelectric temperature difference unit according to claim 6, further comprising a housing having a housing space, wherein the battery module and the power supply module are installed in the housing space of the housing.   The charging device including the thermoelectric temperature difference unit according to claim 1, wherein the thermoelectric temperature difference unit is a semiconductor thermoelectric cooling chip. A fan opening is further formed in the housing and the fan opening is communicated with the housing space.
The power module further converts the external voltage to generate a driving voltage,
The charging device including a thermoelectric temperature difference unit according to claim 7, further comprising a fan device installed in a fan opening of the housing and electrically connected to the power supply module so as to receive the driving voltage. . The power supply module includes a changeover switch,
The power supply voltage generated in the power supply module when the changeover switch is in the first state is the first voltage,
The charging device including a thermoelectric temperature difference unit according to claim 9, wherein a power supply voltage generated in the power supply module when the changeover switch is in the second state is the second voltage.

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