CN209581200U - Charging protection circuit, battery pack and vehicle - Google Patents
Charging protection circuit, battery pack and vehicle Download PDFInfo
- Publication number
- CN209581200U CN209581200U CN201920180100.5U CN201920180100U CN209581200U CN 209581200 U CN209581200 U CN 209581200U CN 201920180100 U CN201920180100 U CN 201920180100U CN 209581200 U CN209581200 U CN 209581200U
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- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000001012 protector Effects 0.000 claims description 27
- 230000001681 protective effect Effects 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- 230000002411 adverse Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
An embodiment of the utility model provides a charging protection circuit, battery package and vehicle, wherein charging protection circuit includes: the overcharge protection device is connected in series on the charging loop and has a closed state for connecting the charging loop and an open state for disconnecting the charging loop; the voltage detection control circuit is connected with two ends of the battery cell and has a working state for controlling the overcharge protection device to be switched to a disconnected state; when the voltage at the two ends of the battery cell exceeds the preset overcharge protection voltage, the voltage detection control circuit is in the working state, and the overcharge protection device is switched to a disconnection state. The embodiment of the utility model provides a charging protection circuit, the voltage through the voltage detection control circuit who is connected with electric core detects the voltage at electric core both ends to when the voltage at electric core both ends surpassed and predetermine when overcharging protection voltage, the overcharge protection device on the control charging circuit switches to the off-state, avoids electric core to take place the overcharge, and effectual realization carries out safety control to the battery in charging process.
Description
Technical field
The utility model relates to the security technology area that charges, in particular to a kind of charge protector, battery pack and vehicle.
Background technique
The power source of electric car be power battery, if battery overcharges during the charging process, may to vehicle with
And personnel damage.The additives for overcharge protection of current battery packet only depends on the Preservation tactics of battery management system, works as battery pack
When the voltage of middle battery core is more than the threshold value being arranged in battery management system, meeting trigger protection strategy takes corresponding safeguard measure,
Such as cutting charge circuit etc..When dependence of such method to battery management system is too strong, once battery management system occurs
When crash or program card are dead, charging can be made in runaway condition, battery core is caused to overcharge, and then cause serious consequence.
Utility model content
The utility model embodiment technical problems to be solved are to provide a kind of charge protector, battery pack and vehicle,
Battery management system is only relied on to solve safeguard measure of the current vehicle in charging, when battery management system goes wrong
When, charging can be made in runaway condition, there are security risks.
In order to solve the above technical problems, the utility model embodiment provides a kind of charge protector, comprising:
Protective device is overcharged, is connected on charge circuit, and there is the closed state of connection charge circuit and disconnection to fill
The off-state of electrical circuit；
Voltage detecting and controling circuit connect with the both ends of battery core and there is control to overcharge protective device and switch to off-state
Working condition；
Wherein, voltage detecting and controling circuit the voltage for detecting battery core both ends be more than one it is default overcharge protection voltage when,
Voltage detecting and controling circuit is in running order, overcharges protective device and switches to off-state.
Specifically, charge protector as described above, overcharging protective device includes: control switch；
Voltage detecting and controling circuit includes: control circuit corresponding with control switch and the detection connecting with battery core electricity
Road；
Wherein, detection circuit is when the voltage for detecting battery core both ends is more than to preset to overcharge protection voltage, at control circuit
In on state, control switch switches to off-state.
Preferably, charge protector as described above, detection circuit include: with the concatenated light emitting diode of battery core,
In, the voltage at battery core both ends is more than when presetting to overcharge protection voltage, and light emitting diode switches to luminance；
Control circuit includes: the power supply, controller and optical coupled switch of series connection, wherein optical coupled switch corresponds to hair
Optical diode setting, controller are arranged corresponding to control switch, and when optical coupled switch is in the conductive state, control switch is switched to
Off-state.
Specifically, charge protector as described above, control switch include: temperature control fuse；
Controller includes the heating structure of setting corresponding with temperature control fuse.
Further, charge protector as described above, temperature control fuse include: the first terminal being connect with battery core,
The Second terminal being connect with charging equipment and the meltable structure being set between first terminal and Second terminal.
Preferably, charge protector as described above, control switch and controller collection become an electromagnetic relay.
The another preferred embodiment of the utility model additionally provides a kind of battery pack, comprising: charge protection as described above
Circuit.
The further embodiment of the utility model additionally provides a kind of vehicle, including battery pack as described above.
Compared with prior art, a kind of charge protector, battery pack and vehicle provided by the embodiment of the utility model, until
It has the advantages that less
One is provided in the embodiments of the present invention, on charge circuit and overcharges protective device, and there is connection to charge back
Road guarantees the closed state that battery core charges and disconnects the off-state that charge circuit avoids battery core from overcharging；Battery core is also with one
Voltage detecting and controling circuit connection, voltage detecting and controling circuit can detect the voltage at battery core both ends, and work as the voltage at battery core both ends
More than it is default overcharge protection voltage when, control overcharges protective device and switches to off-state, so that battery core no longer charges, protects
Shield battery core does not overcharge, and effective realize carries out security management and control to battery during the charging process, is conducive to avoid in cell tube
In the case where managing thrashing, charge circuit can not disconnect and the adverse consequences that is overcharged to battery core and generated in turn.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of charge protector of the utility model；
Fig. 2 is the second structural representation of the charge protector of the utility model.
[description of symbols]
1, charge circuit；2, battery core；3, protective device is overcharged；301, control switch；
30113, temperature control fuse；30111, meltable structure；4, voltage detecting and controling circuit；
401, control circuit；4011, power supply；4012, controller；40121, heating structure；
4013, optical coupled switch；402, detection circuit；4021, light emitting diode.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.In the following description, such as specific configure with the specific detail of component only is provided
Only to assist in comprehensive understanding the embodiments of the present invention.It therefore, it will be apparent to those skilled in the art that can be to here
The embodiment of description makes various changes and modifications without departing from the scope of the utility model and spirit.In addition, in order to clear and
Succinctly, the description to known function and construction is omitted.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic includes at least one embodiment of the utility model.Therefore, go out everywhere in the whole instruction
Existing " in one embodiment " or " in one embodiment " not necessarily refers to identical embodiment.In addition, these are specific special
Sign, structure or characteristic can combine in any suitable manner in one or more embodiments.
In the various embodiments of the utility model, it should be appreciated that the size of the serial number of following each processes is not meant to hold
Row sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, and implement without coping with the utility model
The implementation process of example constitutes any restriction.
It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit
In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.
In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
In embodiment provided herein, it should be appreciated that " B corresponding with A " indicates that B is associated with A, can be with according to A
Determine B.It is also to be understood that determine that B is not meant to determine B only according to A according to A, it can also be according to A and/or other information
Determine B.
Referring to Fig. 1 or Fig. 2, a preferred embodiment of the utility model provides a kind of charge protector, comprising:
Protective device 3 is overcharged, is connected on charge circuit 1, and there is closed state and the disconnection of connection charge circuit 1
The off-state of charge circuit 1；
Voltage detecting and controling circuit 4, connect and is controlled with the both ends of battery core 2 and overcharge protective device 3 and switch to off-state
Working condition；
Wherein, voltage detecting and controling circuit 4 is more than one default to overcharge protection voltage in the voltage for detecting 2 both ends of battery core
When, voltage detecting and controling circuit 4 is in running order, overcharges protective device 3 and switches to off-state.
In the embodiments of the present invention, it is provided with one on charge circuit 1 and overcharges protective device 3, there is connection charging
Circuit 1 guarantees the closed state that battery core 2 charges and disconnects the off-state that charge circuit 1 avoids battery core 2 from overcharging；Electricity
Core 2 is also connect with a voltage detecting and controling circuit 4, and voltage detecting and controling circuit 4 can detect the voltage at 2 both ends of battery core, and when electricity
The voltage at 2 both ends of core is more than when presetting to overcharge protection voltage, and voltage detecting and controling circuit 4 is in running order, and control overcharges guarantor
Protection unit 3 switches to off-state, so that battery core 2 no longer charges, battery core 2 is protected not overcharge, effective to realize
Security management and control is carried out to battery in charging process, is conducive to avoid the charge circuit 1 in the case where battery management system fails
The damage of the adverse consequences that can not be disconnected and be overcharged to battery core 2 and generated in turn, including but not limited to battery core 2, vehicle rise
Fire etc..Wherein, charge circuit 1 includes but is not limited in battery pack for connecting any electricity in external charging equipment and battery pack
The charging major loop of core 2；Battery core 2 as described herein includes but is not limited to single battery core or groups of battery core mould in battery pack
Group.
Specifically, voltage detecting and controling circuit 4 also there is control to overcharge the initial shape that protective device 3 is kept closed
State, wherein when voltage detecting and controling circuit 4 detect the voltage at battery core both ends lower than it is default overcharge protection voltage when, voltage detecting
Control circuit 4 is in original state, and control overcharges protective device 3 and is kept closed；Optionally, if overcharging protective device 3
With the function of switching to closed state from off-state, when voltage detecting and controling circuit 4 detects that the voltage at battery core both ends is low
When overcharging protection voltage in default, and receiving control and overcharge the control instruction of the closure of protective device 3, voltage detecting and controling circuit
4 controls overcharge protective device 3 and switch to closed state by off-state.
Referring to Fig. 1, specifically, charge protector as described above, overcharging protective device 3 includes: control switch 301；
Voltage detecting and controling circuit 4 includes: control circuit 401 corresponding with control switch 301 and connect with battery core 2
Detection circuit 402；
Wherein, detection circuit 402 is when the voltage for detecting 2 both ends of battery core is more than to preset to overcharge protection voltage, control electricity
Road 401 is in the conductive state, and control switch 301 switches to off-state.
In the embodiments of the present invention, overcharging protective device 3 includes: control switch 301, so that voltage detecting controls
Whether circuit 4 can be charged by the i.e. controllable charge circuit 1 of state of control control switch 301 for battery core 2.Voltage detecting control
Circuit 4 includes the detection circuit 402 connected with battery core 2 and the corresponding setting with the control switch 301 of protective device 3 is overcharged
Control circuit 401, wherein detection circuit 402 is used to detect the voltage at 2 both ends of battery core, and overcharges protection voltage in voltage
When control control circuit 401 it is in the conductive state；Control circuit 401 is used for control when in the conductive state and overcharges protection dress
The control switch 301 for setting 3 switches to off-state by closed state, does not utilize the voltage at 2 both ends of battery core directly in the process
It is controlled, is conducive to avoid high-pressure leakage, and then guarantee safety of the vehicle in charging.
Optionally, voltage detecting and controling circuit 4 may be arranged as the diode for being connected on the both ends of battery core 2 and switch control
Device processed, when the voltage of battery core 2 is more than preset overpressure protection voltage, switch controller is connected in diode breakdown, and then controls
The control switch 301 for overcharging protective device 3 switches to off-state by closed state, disconnects charge circuit 1.
Referring to Fig. 1 or Fig. 2, it is preferable that charge protector as described above, detection circuit 402 include: to go here and there with battery core 2
The light emitting diode 4021 of connection, wherein the voltage at 2 both ends of battery core is more than light emitting diode 4021 when presetting to overcharge protection voltage
Switch to luminance；
Control circuit 401 includes: the power supply 4011, controller 4012 and optical coupled switch 4013 of series connection, wherein light
Coupling switch 4013 is arranged corresponding to light emitting diode 4021, and controller 4012 is arranged corresponding to control switch 301, in optical coupled switch
4013 it is in the conductive state when, control switch 301 switches to off-state.
In the embodiments of the present invention, detection circuit 402 includes and the concatenated light emitting diode 4021 of battery core 2, control
Circuit 401 processed includes the optical coupled switch 4013 being correspondingly arranged with light emitting diode 4021, when the voltage at 2 both ends of battery core is more than default
When overcharging protection voltage, light emitting diode 4021 is due to breakdown and luminous, so that optical coupled switch 4013 is in light-emitting diodes
It is connected under the irradiation for the light that pipe 4021 issues, the switching-on state of entire control circuit 401, controller 4012 is due to tool at this time
Have an electric energy input, control control switch 301 disconnects so that charge circuit 1 disconnects, avoid the generation of battery core 2 overcharge and into
And the adverse consequences generated.It wherein, be the power supply 4011 that controller 4012 is powered is 12V power supply, power supply 4011 includes but unlimited
In vehicle battery, by way of low voltage control high pressure, the safety when disconnecting charge circuit 1 is advantageously ensured that.
Referring to fig. 2, specifically, charge protector as described above, control switch 301 include: temperature control fuse
30113；
Controller 4012 includes the heating structure 40121 of setting corresponding with temperature control fuse 30113.
In the embodiments of the present invention, control switch 301 includes: temperature control fuse 30113, and controller 4012 wraps
It includes: heating structure 40121, wherein when control circuit 401 is connected, heating device heats temperature control fuse 30113,
When temperature control fuse 30113 is disconnected because of partial melting, disconnect charge circuit 1, and then battery core 2 is avoided to overcharge.Wherein
Once-existing difference when temperature control fuse 30113 switches to off-state by closed state, so that working as battery core 2 during the charging process
When there is voltage fluctuation, it will not disconnect immediately, advantageously ensure that charging normal for battery core 2.Wherein, temperature control fuse 30113 wraps
It includes but is not limited to be set to the overcurrent protective device to cause damages for avoiding electric current excessive to battery pack on charge circuit 1.
Here, heating structure 40121 can specifically use resistive heater or other components with heating function.
Referring to fig. 2, further, charge protector as described above, temperature control fuse 30113 include: to connect with battery core 2
The first terminal connect, the Second terminal being connect with charging equipment and the easy clinkering being set between first terminal and Second terminal
Structure 30111.
In the embodiments of the present invention, temperature control fuse 30113 includes: meltable structure 30111 and first terminal
And Second terminal, wherein meltable structure 30111 is correspondingly arranged with heating structure 40121, is heated the heating of structure 40121
When can gradually melt, when complete melt charge circuit 1 is disconnected, is conducive to that battery core 2 is avoided to overcharge.First terminal and
The connection of meltable structure 30111 and battery core 2 and/or power supply unit is convenient in the setting of two-terminal, and guarantees the stability of connection.Its
In, meltable structure 30111 includes but is not limited to lower melting-point fusible alloy.
Preferably, charge protector as described above, control switch 301 and controller 4012 be integrated into an electromagnetism after
Electric appliance.
In the embodiments of the present invention, control switch 301 and controller 4012 are integrated into an electromagnetic relay, lead to
Crossing same device can be realized the effect of controller 4012 and control switch 301, be conducive to simplify charge protector, simultaneously
By way of low voltage control high pressure, the safety when battery core 2 charges is advantageously ensured that.
The another preferred embodiment of the utility model additionally provides a kind of battery pack, comprising: charge protection as described above
Circuit.
The battery pack provided by the embodiments of the present invention includes charge protector as described above, so that battery
When the battery of packet is charged, it is connected on charge circuit 1 by the control of voltage detecting and controling circuit 4 being connect with battery core 2
Overcharging voltage of the protective device 3 at 2 both ends of battery core is more than to preset disconnection when overcharging protection voltage, so that battery core 2 is no longer filled
Electricity avoids battery core 2 from overcharging, and effective realize carries out security management and control to battery during the charging process, is conducive to avoid in electricity
Pond management system causes battery pack to go wrong in the case where failing due to battery core 2 overcharges.
The further embodiment of the utility model additionally provides a kind of vehicle, including battery pack as described above.
The vehicle provided by the embodiments of the present invention includes battery pack as described above, in Vehicular charging Shi Nengtong
Crossing prevents battery core 2 from overcharging, and guarantees vehicle safety.
In addition, the utility model can in different examples repeat reference numerals and/or letter.This repetition is for letter
Change and clear purpose itself do not indicate the relationship between discussed various embodiments and/or setting.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (8)
1. a kind of charge protector characterized by comprising
Overcharge protective device (3), be connected on charge circuit (1), and have be connected to the closed state of the charge circuit (1) with
And disconnect the off-state of the charge circuit (1)；
Voltage detecting and controling circuit (4) connect with the both ends of battery core (2) and switches with protective device (3) are overcharged described in control
To the working condition of the off-state；
Wherein, voltage detecting and controling circuit (4) is detecting that the voltage at the battery core (2) both ends is more than that default overcharge protects electricity
When pressure, the voltage detecting and controling circuit (4) is in the working condition, and the protective device (3) that overcharges switches to described break
Open state.
2. charge protector according to claim 1, which is characterized in that the protective device (3) that overcharges includes: control
It switchs (301)；
The voltage detecting and controling circuit (4) include: control circuit (401) corresponding with the control switch (301) and
The detection circuit (402) being connect with the battery core (2)；
Wherein, the detection circuit (402) is more than that default overcharge protects electricity in the voltage for detecting the battery core (2) both ends
When pressure, the control circuit (401) is in the conductive state, and the control switch (301) switches to off-state.
3. charge protector according to claim 2, which is characterized in that the detection circuit (402) include: with it is described
Battery core (2) concatenated light emitting diode (4021), wherein the voltage at battery core (2) both ends is more than that described preset overcharges protection
When voltage, the light emitting diode (4021) switches to luminance；
The control circuit (401) includes: the power supply (4011), controller (4012) and optical coupled switch of series connection
(4013), wherein the optical coupled switch (4013) is arranged corresponding to the light emitting diode (4021), the controller (4012)
It is arranged corresponding to the control switch (301), when the optical coupled switch (4013) is in the conductive state, the control switch
(301) off-state is switched to.
4. charge protector according to claim 3, which is characterized in that the control switch (301) includes: that temperature control is molten
Disconnected device (30113)；
The controller (4012) includes the heating structure (40121) of setting corresponding with temperature control fuse (30113).
5. charge protector according to claim 4, which is characterized in that the temperature control fuse (30113) include: with
The first terminal of the battery core (2) connection, the Second terminal connecting with charging equipment and it is set to the first terminal and institute
State the meltable structure (30111) between Second terminal.
6. charge protector according to claim 3, which is characterized in that the control switch (301) and the control
Device (4012) processed is integrated into an electromagnetic relay.
7. a kind of battery pack characterized by comprising such as charge protector as claimed in any one of claims 1 to 6.
8. a kind of vehicle characterized by comprising battery pack as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180100.5U CN209581200U (en) | 2019-01-31 | 2019-01-31 | Charging protection circuit, battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180100.5U CN209581200U (en) | 2019-01-31 | 2019-01-31 | Charging protection circuit, battery pack and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209581200U true CN209581200U (en) | 2019-11-05 |
Family
ID=68354961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920180100.5U Active CN209581200U (en) | 2019-01-31 | 2019-01-31 | Charging protection circuit, battery pack and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN209581200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114520400A (en) * | 2020-11-20 | 2022-05-20 | 比亚迪股份有限公司 | Intelligent connecting sheet, battery pack and vehicle |
-
2019
- 2019-01-31 CN CN201920180100.5U patent/CN209581200U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114520400A (en) * | 2020-11-20 | 2022-05-20 | 比亚迪股份有限公司 | Intelligent connecting sheet, battery pack and vehicle |
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