CN208955138U - A kind of anti-explosion battery packet - Google Patents
A kind of anti-explosion battery packet Download PDFInfo
- Publication number
- CN208955138U CN208955138U CN201821574724.7U CN201821574724U CN208955138U CN 208955138 U CN208955138 U CN 208955138U CN 201821574724 U CN201821574724 U CN 201821574724U CN 208955138 U CN208955138 U CN 208955138U
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- Prior art keywords
- battery
- battery pack
- circuit
- battery unit
- voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a kind of anti-explosion battery packet, including battery pack, battery pack includes at least two groups battery unit, and the voltage balancing circuit that can balance pressure difference between each group battery unit, the setting of voltage balancing circuit energy on-off are connected between each group battery unit.The anti-explosion battery packet is additionally arranged voltage balancing circuit on existing battery pack circuit base, voltage balancing circuit on-off setting, so battery pack is idle or battery pack in each battery unit be connected in parallel when, by eliminating the voltage difference between each battery unit under the action of voltage balancing circuit, avoid the case where charging current occur due between battery unit there are pressure difference in use, so that the uncontrollable charging current occurred due between battery unit there are pressure difference is controlled, avoid the case where battery pack is exploded, improve the safety that battery pack uses, the service life of battery pack is also increased simultaneously.
Description
Technical field
The utility model relates to a kind of anti-explosion battery packets.
Background technique
Currently, the capacity of battery is significantly promoted with the development of battery material technology, application range is also
Through extending to some powerful power category electric devices from some low power electrical type electric devices, such as electric tool
Deng.In this way, the constraint of cable can be got rid of and can use at any time, everywhere by using the electric tool of high-multiplying-power battery.To mention
High usage, what these batteries generallyd use is rechargeable battery pack, such as nickel pot (Nickel-cadmium, NiCd) battery, nickel
Hydrogen (Nickel-Metal Hydride, NiMH battery, clang ion (Lithium-ion, L-ion) battery pack etc..
In the market common battery pack generally comprise it is multiple be connected to each other so as to from wherein provide electric power battery unit.Respectively
Battery unit is generally placed in the shell of sealing.It is typically configured to for the battery pack that electric tool uses with specific voltage
(being generally mostly 18 volts) provides power supply.Battery pack is all connected each battery unit in battery pack by wiring, is drawn
Two connection terminals export a kind of voltage or capacitor out, can only supply the electric device of voltage identical as battery pack or load
Electricity, voltage or capacity can not change, and limitation is very big, and other high-power or low power electric device cannot then use,
Therefore inconvenience is brought to user.
To solve this problem, Authorization Notice No. is that the China of CN201838666U (application No. is 201020157561.X) is real
With new patent " combination of battery pack and electric device " and application publication number be CN106232301A (application No. is
201580011830.7) Chinese invention patent application " improvement of portable power ", disclosed in include in battery pack
Multiple element cells, it is by change-over switch that two groups or more battery pack is in series or in parallel, and then export two kinds or
The two or more voltages of person or capacity, realization is powered the electrical installation of different voltages, so that battery pack can be used for
On the different electric device of voltage rating.But it is built-in with the battery pack of multiple individual battery cells, pass through machine built in battery pack
Tool triggers change-over switch, or centers mechanical triggering change-over switch in the electrical equipment dress being used cooperatively with battery pack, leads to
The operation to mechanical triggering change-over switch is crossed, realizes the change of connection type between different battery units inside battery pack, so i.e.
Realize the dual output of battery pack.It is idle battery unit each in battery pack is switched to used in parallel or battery pack
When, the battery unit inside battery pack will appear different degrees of exveral phenomena about voltage imbalance, when switching to parallel connection again,
The high battery unit of voltage can the battery unit low to voltage charge, the voltage difference between different battery units is filled away from bigger
Electric current is bigger, and this charging current can not be protected, and will cause the security risks of battery pack and the risk of service life reduction.
Utility model content
Technical problem to be solved in the utility model be for the above-mentioned prior art one kind is provided being capable of balancing battery packet
In voltage difference between each battery unit, and then improve the anti-explosion battery packet of battery pack safety and service life.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of anti-explosion battery packet, including battery
Group, the battery pack include at least two groups battery unit, it is characterised in that: being connected between each group battery unit can balance respectively
The voltage balancing circuit of pressure difference between group battery unit, the voltage balancing circuit energy on-off setting.
Preferably, the voltage balancing circuit includes the anode connection circuit and energy that can connect each group battery unit anode
The cathode for enough connecting each group battery unit cathode connects circuit.
Simply, the anode connection circuit includes first switch, and the both ends of the first switch are separately connected two not
With the anode of battery unit；The cathode connection circuit includes second switch, and the both ends of the second switch are separately connected two
The cathode of different battery units.
Preferably, voltage follower circuit, the voltage follower circuit and battery pack are additionally provided in the anti-explosion battery packet
Between by switching switch connection, the voltage follower circuit include can be connected in parallel each battery unit low-voltage output electricity
Road and the voltage output circuit that each battery unit is connected in series, the switching switch allow hand over low voltage output circuit or
Voltage output circuit is connect with battery pack.
Compared with the prior art, the advantages of the utility model are: the anti-explosion battery packet is in existing battery pack circuit base
Voltage balancing circuit is additionally arranged on plinth, voltage balancing circuit on-off setting, so battery pack is idle or battery pack in
When each battery unit is connected in parallel, by eliminating the voltage difference between each battery unit under the action of voltage balancing circuit, keep away
Exempt from use because between battery unit there are pressure difference due to there is the case where charging current so that because between battery unit exist pressure
Uncontrollable charging current that is poor and occurring is controlled, and avoids the case where battery pack is exploded, and improves battery pack use
Safety, while also increasing the service life of battery pack.
Detailed description of the invention
Fig. 1 is the circuit diagram of anti-explosion battery packet in the utility model embodiment.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
Existing twin voltage battery pack is carrying out in use, can be because following reason each battery unit occur in battery pack not
The case where balance:
A, the included Voltage unbalance situation of each battery unit itself in battery pack.
B, the circuit that battery pack externally communicates is also required to be powered, and providing power supply for the circuit of outer communication can only come from
Single battery unit in battery pack, the power consumption that will cause the battery unit are higher than other battery units, the electricity of the battery unit
Pressure also can accordingly be lower than other battery units.
C, when battery pack is idle, it usually needs LED battery capacity indication lamp indicates current electricity, LED battery capacity indication lamp
The power supply of circuit also can only be from the single battery unit in battery pack, and then will cause the battery unit power consumption higher than other
Battery unit, the voltage of the battery unit can also be lower than other battery units.
Because of previous reasons, each battery unit in battery pack is no matter in being connected in parallel use process or idle process
In, it will appear the unbalanced situation of each battery cell voltage, and if ignoring the situation, it will appear the high battery list of voltage
The member battery unit low to voltage charges, and for the voltage difference between different battery units away from bigger, charging current is bigger, and this
A charging current can not be protected, and will cause the security risks of battery pack and the risk of service life reduction.
As shown in Figure 1, the anti-explosion battery packet in the present embodiment, including battery pack 1, voltage follower circuit 3 and switching switch,
Pass through switching switch connection between voltage follower circuit 3 and battery pack 1.
Wherein battery pack 1 includes at least two groups battery unit 11, and voltage follower circuit 3 includes that can be connected in parallel each battery
The low voltage output circuit 32 of unit 11 and the voltage output circuit 31 that each battery unit 11 is connected in series, switching switch can
Switching low voltage output circuit 32 or voltage output circuit 31 are connect with battery pack 1.
The voltage that can balance pressure difference between each group battery unit 11 is connected in battery pack 1 between each group battery unit 11
Balancing circuitry 2, the 2 energy on-off setting of voltage balancing circuit, and then as needed or control condition, the voltage that is turned on or off are flat
Weigh circuit 2, when voltage balancing circuit 2 is connected, plays balance of voltage effect, avoids pressure difference occur between different battery units 11
And there is the case where uncontrollable charging current.
Voltage balancing circuit 2 includes that can connect the anode connection circuit 21 of 11 anode of each group battery unit and can connect
The cathode of 11 cathode of each group battery unit connects circuit 22.Specifically, anode connection circuit 21 includes first switch K1, and first opens
The both ends for closing K1 are separately connected the anode of two different battery units 11；Cathode connect circuit 22 include second switch K2, second
The both ends of switch K2 are separately connected the cathode of two different battery units 11.
The present embodiment is illustrated by taking two groups of battery units 11 as an example, and the anode in two groups of battery units 11 is opened by first
It closes K1 to be connected, the cathode in two groups of battery units 11 is connected by second switch K2.It leaves unused in battery pack or when switching
When switching battery pack 1 and low voltage output circuit 32 are attached, i.e., switching switching to by each battery unit 11 into
When row is connected in parallel and is powered, conducting voltage balancing circuitry 2, that is, be closed first switch K1 and second switch K2 at this time.This
When two groups of battery units 11 anode connection is realized by first switch K1 so that the cathode voltage of two groups of battery units 11 is kept
Unanimously, the cathode of two groups of battery units 11 realizes connection by second switch K2, so that the cathode voltage of two groups of battery units 11
It is consistent, so then eliminates the pressure difference between two groups of battery units 11, that is, effectively prevent going out for uncontrollable charging current
It is existing.The case where battery pack is exploded is avoided, improves the safety that battery pack uses, while also increasing making for battery pack
Use the service life.
Claims (4)
1. a kind of anti-explosion battery packet, including battery pack (1), the battery pack (1) includes at least two groups battery unit (11), special
Sign is: the balance of voltage electricity that can balance pressure difference between each group battery unit (11) is connected between each group battery unit (11)
Road (2), the voltage balancing circuit (2) can on-off settings.
2. anti-explosion battery packet according to claim 1, it is characterised in that: the voltage balancing circuit (2) includes that can connect
It connects anode connection circuit (21) of each group battery unit (11) anode and the cathode of each group battery unit (11) cathode can be connected
It connects circuit (22).
3. anti-explosion battery packet according to claim 2, it is characterised in that: anode connection circuit (21) is opened including first
It closes (K1), the both ends of the first switch (K1) are separately connected the anode of two different battery units (11)；The cathode connection
Circuit (22) includes second switch (K2), and the both ends of the second switch (K2) are separately connected two different battery units (11)
Cathode.
4. according to claim 1 to anti-explosion battery packet described in 3 any claims, it is characterised in that: the anti-explosion battery packet
In be additionally provided with voltage follower circuit (3), between the voltage follower circuit (3) and battery pack (1) by switching switch connection,
The voltage follower circuit (3) includes that the low voltage output circuit (32) that can be connected in parallel each battery unit (11) and series connection connect
Connect the voltage output circuit (31) of each battery unit (11), the switching switch allow hand over low voltage output circuit (32) or
Person's voltage output circuit (31) is connect with battery pack (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574724.7U CN208955138U (en) | 2018-09-26 | 2018-09-26 | A kind of anti-explosion battery packet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574724.7U CN208955138U (en) | 2018-09-26 | 2018-09-26 | A kind of anti-explosion battery packet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955138U true CN208955138U (en) | 2019-06-07 |
Family
ID=66739493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821574724.7U Active CN208955138U (en) | 2018-09-26 | 2018-09-26 | A kind of anti-explosion battery packet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208955138U (en) |
-
2018
- 2018-09-26 CN CN201821574724.7U patent/CN208955138U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 315016 No. 255, Kesheng Road, Wangchun Industrial Park, Haishu District, Ningbo City, Zhejiang Province Patentee after: ZHEJIANG LERA NEW ENERGY POWER TECHNOLOGY Co.,Ltd. Address before: 315599 No. 398, Longtan Road, Yuelin street, Fenghua District, Ningbo City, Zhejiang Province Patentee before: ZHEJIANG LERA NEW ENERGY POWER TECHNOLOGY Co.,Ltd. |