JPH056676U - Battery holder - Google Patents

Abstract

(57) [Summary] [Purpose] In a battery holder that houses a backup battery, protects the battery from reverse current due to mis-mounting of the diode on the external circuit side and from excessive current due to short-circuiting of the power supply terminal, thus ensuring long-term battery performance. Guarantee and improve reliability. [Structure] At least one of a diode 8 and a protective resistor 9 is provided between a connection terminal plate 4 on the positive electrode side and a power supply connector pin 6 on the positive electrode side provided inside a holder body 2. The inlet / outlet for the battery 1 of the holder body 2 is closed by the lid 3 which can be freely opened and closed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a battery holder for accommodating a battery used as an auxiliary power supply for memory backup of a computer.

[0002]

[Prior Art]

 As a conventional battery holder, for example, Japanese Utility Model Laid-Open No. 2-14764 is known. This is a holder for button type batteries, in which a positive and negative connection terminal plates are assembled in a circular open case having an open top surface.

The battery holder containing the battery for memory backup is connected in parallel to the memory circuit, but in order to supply current from the battery only when necessary, that is, to avoid charging the battery by the main power source. , Connected via a diode. This diode is already built into the circuit board on the computer side and allows the current supply from the battery to back up the data only when the current supply from the power supply circuit to the memory circuit is interrupted due to a power failure or the like. There is.

[0004]

[Problems to be solved by the device]

 As described above, the battery used for memory backup only supplies current when a power failure or computer relocation occurs, and is often replaced only after it becomes unusable due to self-discharge. For several years. In this way, batteries that maintain a standby state for a long period of time require high reliability.

However, the function of the battery is impaired due to electrical troubles of members other than the battery, and the function of the battery cannot be normally exerted when necessary, resulting in the loss of data in the memory circuit. Although it is an extremely rare case, the diode controlling the battery output was connected in positive and negative directions, so the charging current was supplied to the battery at the same time as the start of service, and the battery may have deteriorated early. In addition, when checking the circuit on the computer side, the power supply terminal of the battery holder was short-circuited with a tool and the battery sometimes deteriorated.

An object of the present invention is to provide a battery holder which can protect the battery and guarantee its long-term reliability even when an electric trouble occurs in a member other than the battery. Another object of this invention is to configure the battery holder in the shape of a closed case to prevent dust from accumulating inside the holder, and to store the battery etc. in a proper state for a long time to improve its reliability. To do.

[0007]

[Means for Solving the Problems]

 The battery holder of the present invention comprises a holder main body 2 for accommodating the battery 1 and a lid 3 for opening and closing the entrance / exit of the holder main body 2, and the inside of the holder main body 2 corresponds to the positive and negative electrodes of the battery 1. A pair of connection terminal plates 4 and 5 are provided, connector pins 6 and 7 for power supply are provided outside the holder body 2, a diode 8 for controlling the input / output current to the battery 1 and a protective resistor At least one of 9 is provided between the connection terminal plate 4 on the positive electrode side and the connector pin 6, and is required to be housed inside the holder body 2.

[0008]

[Action]

 If a diode 8 or protective resistor 9 is provided on the side of the battery holder, even if the diode on the side of the computer is mistakenly connected, or if the power supply terminal of the battery holder is shorted with a tool, The battery housed in can be protected and its function can be exerted normally. The lid 3 closes the inlet / outlet for the battery 1 of the holder body 2 to prevent dust from entering the holder.

[0009]

[Effect of the device]

 As described above, in the battery holder of the present invention, the diode 8 or the protective resistor 9 is provided inside the holder so that the battery holder alone can protect the battery 1. As a result, even if a reverse current or an excessive current is applied to the battery 1 due to an electrical trouble in the members other than the battery 1, the battery 1 is reliably protected and the backup function is normally restored. It can be maintained and the battery performance can be guaranteed until the prescribed replacement period is reached. In addition, the holder structure that closes the inlet / outlet of the battery 1 with the lid 3 can prevent dust from entering the inside of the holder before the next battery replacement, which can cause a short circuit due to dust or the next replacement. It is possible to prevent a defective connection due to dust trapped at the time and improve the reliability of the battery 1 housed inside the holder.

[0010]

【Example】

 In FIG. 1, a battery holder is a holder main body 2 and a lid 3 for accommodating a cylindrical battery 1, a pair of connection terminal plates 4 and 5 mounted inside the holder main body 2, and a current of the battery 1 to an external circuit. It comprises connector pins 6 and 7 for supplying, a diode 8 and a protective resistor 9 which are housed in the holder body 2 together with the battery 1.

The holder body 2 is a rectangular box-shaped plastic molded product that is long in the left and right, and an inlet / outlet for the battery 1 is opened on the upper surface thereof. A pair of connection terminal plates 4 and 5 are arranged inside the wall surfaces of the holder main body 2 facing each other in the longitudinal direction, and a strip-shaped terminal plate 10 is arranged on the inner bottom wall. The pair of connection terminal plates 4 and 5 are press-molded products made of a copper plate, and include contact arms 4a and 5a bent in an inverted U shape, and base portions 4b and 5b horizontally bent from the lower ends thereof. Are integrally formed. As shown in FIGS. 1 and 3, both connection terminal plates 4 and 5 are integrated with the holder main body 2 by caulking and fixing the respective base portions 4b and 5b with welding projections 11. Similarly, the strip-shaped terminal plate 10 is also caulked and fixed by the welding projection 11.

Only one connector pin 6 on the positive electrode side is provided, but two connector pins 7 on the negative electrode side are provided. The reason why the two negative-electrode-side connector pins 7 are provided is to prevent the holder body 2 from being connected positively and negatively to the external circuit. This is to improve the mounting strength. These connector pins 6 and 7 are fixed by swaging in advance to the strip-shaped terminal plate 10 and the connection terminal plate 5 on the negative electrode side respectively. By fixing the terminal plate 10 and the connection terminal plate 5 to the holder main body 2, It projects downward from the holder via a through hole 2a provided in the bottom wall. As shown in FIGS. 2 and 3, the terminal plates 4, 5 and 10 are housed in shallow recesses on the inner surface of the bottom wall so as not to interfere with the battery 1.

The lid 3 is a flat plastic molded product, and is slidably supported on the holder body 2 to open and close the doorway for the battery 1. For this purpose, the guide groove 13 is formed along the long side portion of the opening edge of the holder main body 2, and the rib 14 that fits into the guide groove 13 is provided along the lower side of the long side portion of the lid 3.

In FIG. 1, a diode 8 and a protection resistor 9 are provided between the connection terminal plate 4 on the positive electrode side and the connector pin 6 in order to protect the battery. Specifically, the diode 8 and the protective resistor 9 are connected in series, the side of the diode 8 is connected to the terminal plate 10 that conducts with the connector pin 6, and the side of the protective resistor 9 is connected to the base portion 4b of the connection terminal plate 4. Connecting. Each part is connected by soldering.

As shown in FIG. 4, the battery holder connects the battery 1 in parallel to the voltage application point 17 of the memory circuit 16 and the ground 18 via the positive and negative connector pins 6 and 7. The memory circuit 16 is supplied with a direct current of 5 V from the power supply unit 19. In other words, a voltage higher than the output voltage of 3.6 V of the battery 1 is always applied to the voltage application point 17, and therefore the diode 20 is applied with a reverse bias voltage to be in the OFF state, and the diode 20 from the battery holder side. The current output is forcibly blocked. If this diode 20 is connected in the opposite direction, or if the diode 20 is damaged for some reason, a reverse current will flow to the battery, but the diode 8 provided inside the holder will It functions similarly and blocks reverse current. When the current supply to the voltage applying point 17 is interrupted due to a power failure or the like, a forward voltage is applied to the diode 20 and the diode 8 on the holder side, so that the current is supplied from the battery 1 to the memory circuit 16. Back up data.

For example, when the connector pins 6 and 7 are short-circuited, an excessive current tends to flow to the diode 8, but the protection resistor 9 provided in series with the diode 8 limits the current value, so that an excessive current may occur. It is possible to prevent the diode 8 from being destroyed. Further, even when the diode 8 is destroyed for some reason and becomes a short circuit state, the current value of the reverse current flowing from the power source unit 19 is limited to prevent the battery 1 from deteriorating.

The battery holder configured as described above is used in a state where the holder main body 3 is mounted on the circuit board via a socket (not shown) and the inside of the holder is closed by the lid 3. Therefore, even when the holder is left for a long period of time, it is possible to prevent dust from entering the inside of the holder and to keep the inside of the holder in a proper state for a long period of time.

A plurality of batteries 1 may be housed in the holder body 2. The lid 3 may be attached to the holder body 2 by supporting the lid 3 in a vertically or horizontally swingable open / close manner, or by detachably press-fitting the cap-like lid 3 to the holder body 2. You can also Depending on the computer, in order to enhance the backup function, a diode 20 or a protective resistor may be multiply provided in the circuit between the battery application point 17 and the connector pin 6, or a protective circuit may be provided. In such a case, only one of the diode 8 and the protection resistor 9 may be provided inside the holder.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a lid of a battery holder is separated.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is an electric circuit diagram showing a connection state between a battery holder and a memory circuit.

[Explanation of symbols]

 1 Battery 2 Holder body 3 Lid 4,5 Connection terminal plate 6.7 Connector pin 8 Diode 9 Protective resistance

Claims (1)

Claims for utility model registration: 1. A holder main body 2 for accommodating a battery 1, and a lid 3 for opening and closing the entrance and exit of the holder main body 2. And a pair of connection terminal plates 4 and 5 are provided corresponding to the negative and negative electrodes, and connector pins 6 and 7 for power feeding are provided outside the holder body 2, and a diode that controls the input / output current to / from the battery 1. A battery holder in which at least one of 8 and a protective resistor 9 is provided between the connection terminal plate 4 on the positive electrode side and the connector pin 6 and is housed inside the holder body 2.