JP5046885B2 - Portable power supply - Google Patents

Description

  The present invention mainly relates to a portable power source used for urgently charging a battery built in an electronic device such as a PDA (personal digital assistant), a cellular phone, and an IC player.

A portable power source incorporating a battery has been developed (see Patent Document 1). As shown in FIG. 1, the portable power source described in this publication has a second compartment 92 in which a power supply assembly 93 is disposed on a first compartment 91 in which an electronic device containing a battery to be charged is set. Provided. The power supply assembly 93 includes a battery, a booster circuit, a charging circuit, a battery protection circuit, and a battery remaining amount detection circuit. Further, the second section 92 includes a charging socket 94, a power socket 95 that is connected to the electronic device via a cord and supplies power to the electronic device, and a USB connector 96 that exchanges data between the computer and the electronic device. Is provided.
JP 2005-323486 A

  The portable power source of FIG. 1 supplies power to an electronic device with a battery built in a power source assembly. At this time, the battery of the power supply assembly is discharged to charge the battery of the electronic device. The portable power supply can be conveniently used by quickly charging the built-in battery of the connected electronic device in a short time. In order to quickly charge a battery built in an electronic device in a short time, it is necessary to increase the charging current of the built-in battery, that is, increase the discharge current of the battery of the portable power source. In particular, a portable power source in which a battery is detachably set has a large battery discharge current. This is because the voltage of a standard battery such as an AA battery that is detachably set is as low as 1.2V to 1.5V, so that the voltage is boosted and supplied to charge the battery built in the electronic device. It is. For example, when the voltage of the battery is boosted twice and output to the electronic device, the discharge current of the battery is twice the current for charging the battery of the electronic device. Therefore, a portable power source that charges a battery of an electronic device connected to the outside with a detachable battery has a considerably large discharge current, and in particular, a portable power source that quickly charges a battery of an electronic device. In that case, the discharge current of the battery further increases. Since the battery discharges with a large current and the temperature rises, it is important to cool the battery efficiently to prevent deterioration of the characteristics due to temperature. In particular, the nickel-metal hydride battery that is most suitable for this main application has an increase in temperature and a decrease in electrical characteristics. Therefore, it is important to efficiently cool and reduce the temperature increase due to a large current. The portable power source shown in FIG. 1 is difficult to cool the battery efficiently, and the battery built in the electronic device connected to the outside cannot be quickly charged with a detachable battery in a short time.

  In addition, a portable power source in which a standard battery such as an AA battery is set can increase the output voltage by connecting a plurality of batteries in series. However, in a structure in which a plurality of batteries are set and a battery of an external electronic device is charged, it is difficult to cool each battery uniformly. In particular, a portable power source for charging an electronic device such as a mobile phone in an emergency is required to make the entire device compact because the battery of the electronic device is charged while being carried. It is extremely difficult to cool the water efficiently and uniformly.

  The portable power source can increase the voltage by using a battery as a lithium ion battery. However, a lithium ion battery does not have a standard battery such as an AA battery and cannot be a detachable battery. A standard battery such as an AA battery that can be detached can be charged with a battery of an electronic device connected to the outside by setting a primary battery in an emergency. In a portable power source that cannot replace a battery, in order to charge an internal electronic device and charge a battery built in the external device, the built-in battery needs to be always charged. This is because if the battery is not charged, power cannot be supplied to an electronic device connected to the outside. On the other hand, a portable power source that can be detached from a battery can be conveniently used by setting a primary battery or a separately charged battery in an emergency when the battery is not charged. For this reason, there is a feature that can be used conveniently in an emergency. However, the detachable battery has the disadvantage that the voltage is low and the discharge current increases.

  The present invention was developed for the purpose of solving more difficult problems than those required for portable power supplies. An important object of the present invention is to use a standard battery such as an AA battery in a detachable state. However, an object of the present invention is to provide a portable power source that can reduce the temperature rise of the battery, prevent the harmful effects caused by the temperature rise of the battery, and can make the whole compact even in the rapid charging with a large current.

The portable power source of the present invention has the following configuration in order to achieve the above-described object.
The portable power source includes a case 2 having a mounting recess 6 in which a plurality of rechargeable batteries 1 can be detachably set, a connector 3 provided in the case 2 and connected to an external electronic device, and a battery connected to the connector 3 A voltage adjusting circuit 50 that adjusts and outputs the voltage of 1 and is built in the case 2. The mounting recess 6 of the case 2 has a recess shape in which a plurality of batteries 1 can be stored in parallel in a horizontal plane, and the upper part is opened, and the depth of the recess is made shallower than the outer diameter of the battery 1. The upper part of the battery 1 to be set is shaped to protrude from the opening. Further, the sliding door 4 is connected so as to be movable only in the horizontal direction along both sides of the opening of the mounting recess 6 so as to open and close the mounting recess 6. The sliding door 4 is a side wall that is movably connected to the case 2 on both sides of a closing plate 40 that closes the opening of the mounting recess 6 and prevents the battery 1 set in the mounting recess 6 from coming off. 41. Furthermore, the slide door 4 is provided with a cooling gap 8 between the battery surface set in the mounting recess 6 and the side wall 41, and the case 2 and the closing plate 40 so as to open the cooling gap 8 to the outside. A cooling opening 9 is provided between them. In the portable power source, the sliding door 4 in the closed position prevents the battery 1 from being removed from the mounting recess 6 by the closing plate 40, and the battery 1 set in the mounting recess 6 flows into the cooling opening 9 and the cooling gap 8. The battery 1 is removed from the mounting recess 6 with the sliding door 4 in the open position.

  The portable power source according to claim 2 of the present invention has a mounting recess 6 in which the AA battery is detachably set.

  The portable power source according to claim 3 of the present invention connects the sliding door 4 to the case 2 so as to be movable in a direction orthogonal to the longitudinal direction of the battery 1 set in the mounting recess 6.

  The portable power source according to claim 4 of the present invention is such that the case 2 has a one-side portion on the upper surface as a mounting recess 6 and the other one-side portion as an electronic circuit housing portion 7 containing an electronic circuit, and is in a closed position. 4 covers the surfaces of the electronic circuit housing portion 7 and the mounting recess 6 with a closing plate 40 formed by molding the surfaces into the same plane.

  In the portable power source according to claim 5 of the present invention, a plurality of connectors 3 are arranged on one end surface of the case 2. Furthermore, in the portable power supply according to claim 6 of the present invention, the connector 3 is a USB connector 3B.

  Furthermore, the portable power supply according to claim 7 of the present invention is supplied to the case 2 from the power connector 3A connected to the power connector 3A and connected to the power connector 3A. It incorporates a charging circuit 52 that charges the battery 1 set in the mounting recess 6 with electric power.

  The portable power source of the present invention can be used in a state where a standard battery such as an AA battery can be detached, and even in rapid charging with a large current, the battery temperature rise can be reduced to prevent adverse effects due to the battery temperature rise, Moreover, there is a feature that the whole can be made compact. The portable power supply according to the present invention includes a connector having a mounting recess in which a plurality of batteries can be detachably set, a connector connected to an external electronic device, and a voltage output by adjusting the voltage of the battery to the connector. An adjustment circuit, and the mounting recess has a recess shape in which a plurality of batteries can be stored side by side in a horizontal plane and opened upward, and the depth of the recess is shallower than the outer diameter of the battery. The upper part of the battery to be set is shaped to protrude from the opening, and the sliding door is connected so that it can move only in the horizontal direction along both sides of the opening of the mounting recess, so as to open and close the mounting recess. This sliding door has a structure in which side walls formed to be movably connected to the case are provided on both sides of the closing plate that closes the opening of the mounting recess and prevents the battery set in the mounting recess from being removed. The sliding door is provided with a cooling gap between the battery surface set in the mounting recess and the side wall, and a cooling opening is provided between the case and the closing plate so as to open the cooling gap to the outside. In addition, the closing plate of the sliding door in the closed position prevents the battery in the mounting recess from falling off, and the battery set in the mounting recess is cooled by the air flowing through the cooling opening and the cooling gap to open the sliding door. This is because the battery can be removed from the mounting recess.

  In particular, in the portable power source according to claim 2 of the present invention, the mounting recess has a shape in which the AA battery is detachably set. This portable power source can charge a battery of an electronic device connected to the outside by setting a battery that can be charged with an AA battery, which is commercially available as a standard battery, or a battery that cannot be charged with an AA battery.

  In the portable power supply according to claim 3 of the present invention, the slide door is connected to the case so as to be movable in a direction orthogonal to the longitudinal direction of the battery set in the mounting portion. The portable power source with this structure can cool each battery from both ends to reduce the temperature unevenness of the battery.

  Furthermore, in the portable power source according to claim 4 of the present invention, the case has a mounting recess in one side portion of the upper surface, and the other one side portion is an electronic circuit housing portion containing an electronic circuit, and the sliding door is in a closed position. However, the electronic circuit housing portion and the mounting recess surface are covered with a closing plate formed in the same plane. Since this portable power source covers both the mounting recess and the electronic circuit storage portion at the closed position of the slide door, the appearance can be made clean and compact.

  The portable power supply according to claim 5 of the present invention is provided with a plurality of connectors on one end face of the case, and can be conveniently used by connecting an electronic device or a power adapter to each connector. Moreover, since the portable power supply of Claim 6 of this invention uses a connector as a USB connector, it can be connected to various electronic devices via a USB connector.

  Furthermore, the portable power supply according to claim 7 of the present invention is attached to the case with a power connector supplied with DC power from an external power adapter, and connected to the power connector with power supplied from the power connector. Built-in charging circuit for charging the battery set in the recess. This portable power source can be connected to the outside with a charged battery while charging the battery connected to the mounting recess, and can charge the battery of the electronic device. For this reason, it is not necessary to charge the battery connected to a mounting recessed part with an external charger, and it can be used conveniently.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below exemplifies a portable power source for embodying the technical idea of the present invention, and the present invention does not specify the portable power source as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The portable power source shown in FIGS. 2 to 8 includes a case 2 having a mounting recess 6 in which a plurality of rechargeable batteries 1 can be detachably set, and a connector 3 provided in the case 2 and connected to an external electronic device. And a voltage adjusting circuit 50 that adjusts and outputs the voltage of the battery 1 to the connector 3 and is built in the case 2.

  The case 2 has a mounting recess 6 in one half of the upper surface. The mounting recess 6 has a recess shape in which two batteries 1 can be stored side by side in a horizontal plane and opened upward. The mounting recess 6 in the figure accommodates two batteries 1 in a posture orthogonal to the moving direction of the slide door 4. In other words, the slide door 4 is connected to the case 2 so as to be movable in a direction orthogonal to the longitudinal direction of the battery 1 set in the mounting recess 6.

  The mounting recess 6 has a shape in which the depth of the recess is shallower than the outer diameter of the battery 1 so that the upper part of the battery 1 to be set protrudes from the opening. The portable power source shown in the figure has a mounting recess 6 on the upper surface of the case 2 for setting two AA batteries 1 in parallel. The mounting recess 6 is provided with two rows of fitting grooves 6A along the lower surfaces of the two cylindrical batteries 1 in parallel. The mounting recess 6 can be set at a fixed position by inserting the cylindrical battery 1 into each fitting groove 6A. However, the portable power source of the present invention does not specify two batteries to be set in the mounting recess. The mounting recess may be sized to set three or more batteries, for example, four batteries.

  In the case 2 shown in the figure, the planar shape is rectangular, the mounting recess 6 is provided in one half of the upper surface, and the remaining half of the one side is an electronic circuit housing portion 7 containing an electronic circuit. In the case 2, the electronic circuit housing portion 7 is thicker than the portion where the mounting recess 6 is provided, and the electronic circuit is built in the electronic circuit housing portion 7. The electronic circuit housing portion 7 has a height substantially equal to the top surface of the battery 1 set in the mounting recess 6. In this case 2, both the electronic circuit storage portion 7 and the mounting recess 6 can be covered with the slide door 4 having the closing plate 40 as a flat surface. Further, the closing plate 40 of the slide door 4 in the closed position approaches or comes into contact with the top surface of the battery 1 set in the mounting recess 6, so that the battery 1 can be detached from the mounting recess 6, Can be prevented from shifting.

  The case 2 includes a bottom case 2A molded separately from plastic and a top case 2B connected to the bottom case 2A. As shown in FIG. 5, the bottom case 2 </ b> A is formed of plastic in a box shape that opens upward. Further, the bottom case 2 </ b> A is formed into a shape in which a peripheral wall 21 is provided on three sides of a rectangular bottom plate 20. The peripheral wall 21 includes a side wall 21A connected to both sides of the bottom plate 20 and an end face wall 21B connecting one end of these side walls 21A. The side wall 21A connected to both sides of the bottom plate 20 is formed by forming a lower part connected to the bottom plate 20 into a curved shape and integrally forming reinforcing ribs 22 protruding inward. Furthermore, the bottom case 2A is placed in a fixed position with the circuit board 5 inside the peripheral wall 21 on three sides.

  In the bottom case 2A, the upper end edge of the side wall 21A is connected to the lower end of the side wall 31A of the top case 2B in an inlay structure. FIG. 9 is an enlarged cross-sectional view showing a connection structure of the bottom case 2A and the side walls 21A and 31A of the top case 2B connected by an inlay structure. In this inlay structure, a vertical groove 23 is provided along the side wall 21A of the bottom case 2A, a ridge 33 that fits into the vertical groove 23 is provided on the side wall 31A of the top case 2B, and the ridge 33 is placed in the vertical groove 23. It is connected. The longitudinal groove 23 provided on the upper surface of the side wall 21A of the bottom case 2A in FIG. 9 is open on one side (left side in FIG. 9) and has a reinforcing rib 22 protruding from the open portion. The side wall 21A can be connected to a fixed position by preventing the ribs 33 of the top case 2B from being displaced inward by the reinforcing ribs 22. Further, in the inlay structure of this figure, a flange portion 32 is provided so as to protrude outward at the lower end of the side wall 31A of the top case 2B, and a protrusion 33 protruding downward is provided on the outer edge of the flange portion 32. In this inlay structure, the upper surface of the flange portion 32 can be pressed with an ultrasonic horn, and the ridge 33 can be reliably ultrasonically welded to the longitudinal groove 23. In this structure, the upper surface of the side wall 21A of the bottom case 2A and the flange portion 32 of the top case 2B protrude outward. The sliding door 4 is guided to the protruding surface, and the outer surface of the sliding door 4 is made to face the bottom case 2A. It can be flush with the outer surface of the side wall 21A.

  The top case 2 </ b> B is formed in a shape that connects the peripheral wall 31 around the upper plate 30. The upper plate 30 is provided with a rectangular mounting recess 6 on one side portion, and the other side portion is formed high, and this is used as the electronic circuit housing portion 7. A stepped portion 35 that is lower than the electronic circuit housing portion 7 is provided on the outer side of the mounting recess 6. In the illustrated top case 2B, stepped portions 35 having a predetermined width are provided on both sides of the mounting recess 6 and on the three sides of the portion where the cooling opening 9 is provided. As shown in FIG. 3 and FIGS. 6 to 8, the stepped portion 35 has a height that projects the upper part of the battery 1 set in the mounting recess 6. The step portions 35 provided on both sides of the mounting recess 6 specify the lateral width of the cooling gap 8 provided in the slide door 4. This is because the side wall 41 of the slide door 4 is located outside the stepped portion 35 as shown in the sectional view of FIG. Therefore, the width of the stepped portion 35 can be increased and the lateral width of the cooling gap 8 can be increased. Further, the vertical position of the stepped portion 35 specifies the vertical width of the cooling gap 8. Therefore, the stepped portion 35 can be lowered to increase the vertical width of the cooling gap 8. The step portion 35 preferably has a lateral width of about 5 mm. However, the width of the stepped portion can be 3 mm to 10 mm. Further, the step portion 35 is provided with a cooling opening 9 that is about 5 mm lower than the surface of the electronic circuit housing portion 7 and has a vertical width of 5 mm. However, the stepped portion can be lowered by 3 mm to 10 mm from the surface of the electronic circuit housing portion to provide a cooling opening.

  The peripheral wall 31 of the top case 2B includes a side wall 31A connected to the side wall 21A of the bottom case 2A by an inlay structure, and an end face wall 31B connected to the end face wall 31B of the bottom case 2A. The case 2 shown in FIG. 5 is provided with locking pieces 34 protruding downward on the side wall 31A and the end surface wall 31B of the top case 2B, and the locking pieces 34 on the inner surfaces of the side wall 21A and the end surface wall 21B of the bottom case 2A. A locking portion 24 is provided to lock the two peripheral walls 21 and 31 with a locking structure. Further, the bottom case 2A and the top case 2B are connected by ultrasonic welding of the peripheral wall 21 and the peripheral wall 31 or are connected by bonding.

  Further, the case 2 shown in FIGS. 5 to 7 is an end face plate in which a peripheral wall 21 is provided on three sides of the bottom case 2A and one side is opened, and the opening side is integrally formed with the top case 2B. 36. The top case 2 </ b> B is provided with a locking recess 37 that guides the stopper protrusion 42 provided at the end edge of the sliding door 4 at the corner between the end face plate 36 and the upper plate 30. The slide door 4 is moved to the closed position to guide the stopper projection 42 to the locking recess 37. In other words, the stopper projection 42 is guided by the locking recess 37, and the slide door 4 is stopped at the closed position.

  A plurality of connectors 3 are arranged on the end face plate 36. In the case 2 in the figure, a plurality of connectors 3 are arranged on an end face plate 36 which is one end face. In the case 2 in the figure, two connectors 3 are arranged on the end face plate 36. The connector 3 includes a power connector 3A and a USB connector 3B, and a switch 11 is provided between the two connectors 3. The end face plate 36 opens a connector window 38 for disposing the connector 3. Inside the connector window 38, the power connector 3A and the USB connector 3B are fixed. These connectors 3 are fixed to a circuit board 5 built in the case 2 so that a power plug or a USB connector plug penetrating the connector window 38 can be inserted.

  The switch 11 is also fixed to the circuit board 5, and the operation unit 12 is exposed to the outside through a slit window 39 provided in the end face plate 36. The switch 11 outputs a display signal to the remaining capacity detection circuit 55 of the battery 1 mounted on the circuit board 5 to display the remaining capacity. The remaining capacity detection circuit 55 displays the remaining capacity of the battery 1 by the lighting color and the number of lighting of the pilot lamps such as the light emitting diode 56. When a display signal is input from the switch 11, the remaining capacity detection circuit 55 lights the light emitting diode 56 for a certain period of time and displays the remaining capacity. The switch 11 can also switch the voltage adjustment circuit 50 to an operating state. The portable power source that displays the remaining capacity by the ON / OFF signal of the switch 11 and switches the operating state of the voltage adjusting circuit 50 displays the remaining capacity when the switch 11 is pressed briefly, and the voltage adjusting circuit 50 when the switch 11 is pressed long. Can be switched to the operating state. The voltage adjustment circuit 50 determines that the ON signal input from the switch 11 is longer than the set time, and is switched to the operating state. Since this portable power supply can hold the voltage adjustment circuit 50 in a state in which the switch 11 is not pressed for a long time, it is possible to prevent wasteful consumption of the battery 1 in a state in which no electronic device is connected to the USB connector 3B. This is because when the voltage adjustment circuit 50 is in an operating state, power is consumed without connecting an electronic device to the load.

  The slide door 4 is made of plastic, and side walls 41 are integrally formed on both sides of a flat closing plate 40. The closing plate 40 closes the opening of the mounting recess 6 provided in the case 2 at the closed position of the slide door 4 and prevents the battery 1 set in the mounting recess 6 from being detached. The illustrated sliding door 4 is provided with side walls 41 so that the inner surface of the sliding door 4 is shaped along the upper surface of the electronic circuit housing portion 7 of the top case 2 </ b> B so as to bend on both sides of the closing plate 40. The side wall 41 is connected so that the lower end thereof can be moved to the outer edge of the stepped portion 35 of the top case 2B. As shown in the perspective views of FIGS. 3 and 5 and the cross-sectional views of FIGS. 8 and 9, the top case 2 </ b> B has a guide groove 27 that is connected to the outer surface of the step portion 35 so that the slide door 4 can be moved. Provided. The slide door 4 is provided with guide ridges 43 projecting inward along the lower edge of the side wall 41 so that the slide door 4 can move along the guide groove 27. The guide ridge 43 is guided to the guide groove 27, and the slide door 4 is connected to the case 2 so that it can move without being removed.

  The slide door 4 has a structure in which the lower end edge of the side wall 41 is connected to the guide groove 27 of the case 2 by the guide protrusion 43, and a cooling gap 8 is provided between the side wall 41 and the battery surface. That is, the battery 1 is disposed inside the step portion 35, and the side wall 41 of the slide door 4 is disposed outside the step portion 35, thereby providing a cooling gap 8 between the side wall 41 and the battery 1. Yes. Further, the sliding door 4 has a shape in which side walls 41 are provided on both sides of the planar closing plate 40, and a cooling opening 9 that opens the cooling gap 8 to the outside is provided between the stepped portion 35 of the case 2 and the closing plate 40. Provided.

  As shown in FIGS. 2 and 6, the portable power source described above prevents the battery 1 set in the mounting recess 6 from falling off with the closing plate 40 of the sliding door 4 in the closed position, The battery 1 set in the recess 6 is cooled by air flowing through the cooling opening 9 and the cooling gap 8. As shown in FIGS. 3 and 7, the battery 1 is detached from the mounting recess 6 with the sliding door 4 in the open position.

  A circuit board 5 built in the case 2 fixes a lead plate 10 connected to positive and negative end face electrodes of the battery 1. The lead plate 10 is made of a metal plate that can be elastically deformed. The lead plate 10 shown in the figure is bent in an L shape, and one bent piece is used as a fixed portion, and the other bent piece is used as a contact portion that is in contact with the end face electrode of the battery 1. These lead plates 10 are exposed to the inside of the mounting recess 6 from an electrode window 28 that is provided in the inner surface of the mounting recess 6 of the top case 2B. One lead plate 10A is disposed at a fixed position by a pair of holding ribs 29 provided on the top case 2B. The pair of holding ribs 29 are provided on the inner surface of the one side wall 31A and between the opening edge of the electrode window 28 and the side wall 31A so as to extend in parallel and vertically. It is almost equal to the width. One lead plate 10 </ b> A, for example, a lead plate 10 </ b> A that contacts the positive electrode of the battery 1 is fitted between the pair of holding ribs 29 and disposed at a fixed position. Further, the other lead plate 10B has a bent portion by folding the tip end portion, and a convex portion is provided at the bent portion, and the convex portion is projected from the electrode window 28 to the inside of the mounting concave portion 6. ing. This lead plate 10B is in contact with the end face electrode while pressing the negative electrode of the battery 1, for example.

  Further, an electronic circuit mounted on the circuit board 5 is shown in FIG. The circuit board 5 includes a charging circuit 52 that charges the cylindrical battery 1 with electric power input from the power connector 3, and a voltage that stabilizes and outputs the voltage of the battery 1 charged by the charging circuit 52 to a predetermined voltage. A DC / DC converter 51 which is an adjustment circuit 50 is provided. The charging circuit 52 charges the battery 1 with power supplied from a power adapter connected to the power connector 3A. In a portable power source in which the battery 1 is a lithium ion battery, the charging circuit 52 is charged at a constant current and a constant voltage to fully charge the battery. Further, in a portable power source in which the battery is a nickel metal hydride battery or a nickel cadmium battery, the charging circuit charges the battery at a constant current to fully charge the battery. Furthermore, the charging circuit 52 detects the full charge of the battery 1 and stops charging.

  The portable power source shown in the circuit diagram has a power switch 53 connected between the battery 1 and the voltage adjustment circuit 50. The power switch 53 is controlled to be turned on / off by a switching circuit 54. The switching circuit 54 switches the power switch 53 on and off with a signal input from the switch 11. When the ON signal is input from the switch 11 for a certain period of time, the switching circuit 54 turns on the power switch 53 and outputs the output of the battery 1 to the voltage adjustment circuit 50. In this state, the voltage adjustment circuit 50 is in an operating state and supplies stabilized power to the USB connector 3B connected to the output side. When the electronic device connected to the USB connector 3B is disconnected, the switching circuit 54 can detect from the output current that the electronic device has been disconnected from the USB connector 3B. This is because the output current becomes 0 A when the electronic device is removed.

  Furthermore, the circuit board 5 shown in the figure also has a remaining capacity detection circuit 55 for detecting the remaining capacity of the battery 1. The remaining capacity detection circuit 55 calculates the remaining capacity from the voltage of the battery 1 and the current of the battery 1 and displays the remaining capacity by the light emission color of the light emitting diode 56 and the number of lighting. When an ON signal is input from the switch 11, the remaining capacity detection circuit 55 turns on the light emitting diode 56 and displays the remaining capacity over a predetermined time.

It is a perspective view which shows the conventional portable power supply. It is a perspective view of the portable power supply concerning one Example of this invention. It is a perspective view which shows the state which opened the slide door of the portable power source shown in FIG. It is the back perspective view which looked at the portable power supply shown in FIG. 2 from the lower side. FIG. 3 is an exploded perspective view of the portable power source shown in FIG. 2. FIG. 3 is a cross-sectional view taken along line AA of the portable power source shown in FIG. 2. FIG. 4 is a cross-sectional view of the portable power source shown in FIG. 3 taken along line AA. FIG. 7 is a cross-sectional view of the portable power source shown in FIG. It is an expanded sectional view which shows the connection structure of a bottom case and a top case. It is a circuit diagram of the portable power supply concerning one Example of this invention.

Explanation of symbols

1 ... battery 2 ... case 2A ... bottom case
2B ... Top case 3 ... Connector 3A ... Power connector
3B ... USB connector 4 ... Sliding door 5 ... Circuit board 6 ... Mounting recess 6A ... Fitting groove 7 ... Electronic circuit storage part 8 ... Cooling gap 9 ... Cooling opening 10 ... Lead plate 10A ... Lead plate
10B ... Lead plate 11 ... Switch 12 ... Operation part 20 ... Bottom plate 21 ... Peripheral wall 21A ... Side wall
21B ... End face wall 22 ... Reinforcement rib 23 ... Vertical groove 24 ... Locking portion 27 ... Guide groove 28 ... Electrode window 29 ... Holding rib 30 ... Upper plate 31 ... Peripheral wall 31A ... Side wall
31B ... End face wall 32 ... Gutter 33 ... Projection 34 ... Locking piece 35 ... Stepped part 36 ... End face plate 37 ... Locking recess 38 ... Connector window 39 ... Slit window 40 ... Closure plate 41 ... Side wall 42 ... Stopper protrusion DESCRIPTION OF SYMBOLS 43 ... Guide protrusion 50 ... Voltage adjustment circuit 51 ... DC / DC converter 52 ... Charging circuit 53 ... Power switch 54 ... Switching circuit 55 ... Remaining capacity detection circuit 56 ... Light emitting diode 91 ... 1st division 92 ... 2nd division 93 ... Power supply assembly 94 ... Charging socket 95 ... Power supply socket 96 ... USB connector

Claims (7)

A case (2) having a mounting recess (6) in which a plurality of rechargeable batteries (1) can be detachably set; a connector (3) provided in the case (2) and connected to an external electronic device; A portable power source that adjusts and outputs the voltage of the battery (1) to the connector (3) and has a voltage adjustment circuit (50) built in the case (2),
The mounting recess (6) of the case (2) has a recess shape in which a plurality of batteries (1) can be stored in parallel in a horizontal plane and has an opening at the top. ) Is shallower than the outer diameter of the battery, and the upper part of the battery (1) to be set is projected from the opening,
Furthermore, a sliding door (4) is connected so as to be movable only in the horizontal direction along both sides of the opening of the mounting recess (6) so as to open and close the mounting recess (6). ) Is closed to the case (2) on both sides of the closing plate (40) which closes the opening of the mounting recess (6) and prevents the battery (1) set in the mounting recess (6) from coming off. It has side walls (41) that are connected,
Furthermore, the sliding door (4) provides a cooling gap (8) between the battery surface set in the mounting recess (6) and the side wall (41), and opens the cooling gap (8) to the outside. As shown, a cooling opening (9) is provided between the case (2) and the closing plate (40),
The sliding door (4) in the closed position prevents the battery (1) in the mounting recess (6) from falling off by the closing plate (40) and cools the battery (1) set in the mounting recess (6). A portable power source that is cooled by air flowing through the opening (9) and the cooling gap (8), and the battery (1) is detached from the mounting recess (6) with the sliding door (4) in the open position.   The portable power source according to claim 1, wherein the mounting recess (6) has a shape for detachably setting an AA battery.   The portable type according to claim 1, wherein the sliding door (4) is connected to the case (2) so as to be movable in a direction perpendicular to the longitudinal direction of the battery (1) set in the mounting recess (6). Power supply.   The case (2) has a mounting recess (6) on one side portion of the upper surface, and the other side portion is an electronic circuit housing portion (7) containing an electronic circuit, and the sliding door (4) in the closed position 2. The portable power source according to claim 1, wherein the electronic circuit housing portion (7) and the mounting recess (6) are covered with a closing plate (40) formed in the same plane.   The portable power source according to claim 1, wherein a plurality of connectors (3) are disposed on one end face of the case (2).   The portable power source according to claim 1, wherein the connector (3) is a USB connector (3B).   In the case (2), a power connector (3A) to which direct current power is supplied from an external power adapter, and a power supply connector (3A) connected to the power connector (3A), a mounting recess with power supplied from the power connector (3A) ( The portable power source according to claim 1, which has a built-in charging circuit (52) for charging the battery (1) set in 6).

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