CN206697976U - The charging circuit and automobile of a kind of electrokinetic cell - Google Patents
The charging circuit and automobile of a kind of electrokinetic cell Download PDFInfo
- Publication number
- CN206697976U CN206697976U CN201720461597.9U CN201720461597U CN206697976U CN 206697976 U CN206697976 U CN 206697976U CN 201720461597 U CN201720461597 U CN 201720461597U CN 206697976 U CN206697976 U CN 206697976U
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- Prior art keywords
- electrokinetic cell
- overvoltage protection
- protection element
- relay
- charging circuit
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Abstract
The utility model provides the charging circuit and automobile of a kind of electrokinetic cell, and the charging circuit of the electrokinetic cell includes：For accessing the first voltage end and second voltage end of charge power supply；Overvoltage protection element, it is connected in parallel respectively with the electrokinetic cell and the charge power supply, wherein when the charging voltage of the electrokinetic cell is less than preset voltage value, the overvoltage protection element is in off-state；When the charging voltage of the electrokinetic cell is more than or equal to the preset voltage value, the overvoltage protection element is in conducting state；First fuse element, it is arranged on first current loop；Second fuse element, it is arranged on second current loop.In the utility model embodiment, overvoltage protection element can be turned on when in charging, charging voltage exceedes threshold value so that the first fuse element and the fusing of the second fuse element, protection battery and charging circuit.
Description
Technical field
It the utility model is related to technical field of circuit design, the charging circuit and automobile of more particularly to a kind of electrokinetic cell.
Background technology
In existing electrokinetic cell system, battery management system BMS (BATTERY are typically passed through according to control strategy
MANAGEMENT SYSTEM) break-make of the relay in cell circuit is controlled, so as to reach control cell circuit break-make, keep away
Exempt from the purpose of security risk being likely to occur.But when BMS failure in the case of, then can not block system relay, it is whole so as to cause
Individual battery system easily causes security incident also in working condition.
Utility model content
The utility model embodiment technical problems to be solved are to provide the charging circuit and automobile of a kind of electrokinetic cell, use
To realize when charging voltage exceedes threshold value, charging circuit protection battery is disconnected.
In order to solve the above technical problems, the utility model embodiment provides a kind of charging circuit of electrokinetic cell, including：
For accessing the first voltage end and second voltage end of charge power supply, wherein the first voltage end with it is to be charged
The positive pole connection of electrokinetic cell, the second voltage end is connected with the negative pole of the electrokinetic cell；
Overvoltage protection element, it is connected in parallel respectively with the electrokinetic cell and the charge power supply, wherein the power
When the charging voltage of battery is less than preset voltage value, the overvoltage protection element is in off-state；The electrokinetic cell fills
When piezoelectric voltage is more than or equal to the preset voltage value, the overvoltage protection element is in conducting state, the electrokinetic cell and institute
State the connection circuit between overvoltage protection element and form the first current loop, the charge power supply and overvoltage protection member
Connection circuit between part forms the second current loop；
First fuse element, it is arranged on first current loop；
Second fuse element, it is arranged on second current loop.
Further, the overvoltage protection element is piezo-resistance.
Further, first fuse element is the first fuse, and first fuse is located at the electrokinetic cell
Thermal radiation range within.
Further, second fuse element is the second fuse, be connected to the overvoltage protection element with it is described
On connection circuit between second voltage end.
Further, the charging circuit also includes：
Preliminary filling resistance, the first relay and the second relay；
Wherein, the first end of the preliminary filling resistance respectively with the positive pole of the electrokinetic cell and the first end of the second relay
Connection, the second end of the preliminary filling resistance is connected with the first end of first relay；
Second end of first relay the second end with second relay, the overvoltage protection element respectively
First end connected with the first voltage end；
Second end of second relay also respectively with the first end of the overvoltage protection element and first electricity
Press bond.
Further, the charging circuit also includes：
3rd relay, the connection circuit being connected between the negative pole of the electrokinetic cell and the overvoltage protection element
On.
The utility model embodiment additionally provides a kind of automobile, including electrokinetic cell, in addition to power electric as described above
The charging circuit in pond.
Compared with prior art, the charging circuit and automobile for a kind of electrokinetic cell that the utility model embodiment provides, extremely
Have the advantages that less：
The utility model embodiment, by setting overvoltage protection element, charging voltage it can exceed threshold value in charging
When turn on, protected so as to form the first current loop between electrokinetic cell and overvoltage protection element and charge power supply with overvoltage
The second current loop between protection element so that the first fuse element and the second fuse element fuse in short circuit, protect battery
And charging circuit.
Brief description of the drawings
Fig. 1 is the circuit diagram of the charging circuit of the electrokinetic cell of the utility model embodiment.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.In the following description, there is provided the specific detail of such as specific configuration and component is only
Only to assist in comprehensive understanding embodiment of the present utility model.Therefore, it will be apparent to those skilled in the art that can be to here
The embodiment of description is made 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 eliminated.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is relevant with embodiment
Special characteristic, structure or characteristic are included at least one embodiment of the present utility model.Therefore, go out everywhere in entire disclosure
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 one or more embodiments in any suitable manner.
Referring to Fig. 1, the utility model embodiment provides a kind of charging circuit of electrokinetic cell, including：
For accessing the first voltage end and second voltage end of charge power supply, wherein the first voltage end with it is to be charged
The positive pole connection of electrokinetic cell, the second voltage end is connected with the negative pole of the electrokinetic cell；
Overvoltage protection element 1, it is connected in parallel respectively with the electrokinetic cell and the charge power supply, wherein the power
When the charging voltage of battery is less than preset voltage value, the overvoltage protection element 1 is in off-state；The electrokinetic cell fills
When piezoelectric voltage is more than or equal to the preset voltage value, the overvoltage protection element 1 is in conducting state, the electrokinetic cell with
Connection circuit between the overvoltage protection element 1 forms the first current loop, and the charge power supply is protected with the overvoltage
Connection circuit between protection element 1 forms the second current loop；
First fuse element 2, it is arranged on first current loop；
Second fuse element 3, it is arranged on second current loop.
In the present embodiment, by setting overvoltage protection element 1 so that when the electricity at electrokinetic cell both ends in charging process
When pressure exceedes charge threshold, overvoltage protection element 1 can be changed into conducting state from disconnection situation, that is, work as overvoltage protection
When the voltage at the both ends of element 1 is more than preset voltage value, conducting state is changed into from disconnection situation, wherein, can for preset voltage value
Preset according to the situation of battery.When overvoltage protection element 1 is in conducting state, electrokinetic cell and overvoltage protection are formed
The second current loop between the first current loop and charge power supply and overvoltage protection element 1 between element 1, the first circuit
Loop and second circuit loop are in short-circuit condition, and the first fuse element 2 and the second fuse element 3 set thereon can be short
Disconnected during road, so as to realize the protection to charging circuit.
It should be noted that overvoltage protection element 1 is when both end voltage is less than preset voltage value, its state showed
For off-state, but circuit is not necessarily disconnection, it is also possible to which now its resistance is infinitely great so that circuit shows disconnection shape
State.
Wherein, the charging circuit of the electrokinetic cell of the utility model embodiment can be used for charging, and can be in charging
It is monitored and protects, power supply circuit can also be used as, for electrokinetic cell to externally fed, now the circuit passes through the first electricity
Pressure side and second voltage end are to externally fed.
Further, the overvoltage protection element 1 is piezo-resistance；
Positive pole of the first end of the piezo-resistance respectively with the first voltage end and the electrokinetic cell is connected；
Negative pole of second end of the piezo-resistance respectively with the second voltage end and the electrokinetic cell is connected.
In the present embodiment, using piezo-resistance as overvoltage protection element 1, it can be good at realizing above-mentioned work(
Can, and cost is relatively low.
Further, first fuse element 2 is the first fuse, and first fuse is located at the electrokinetic cell
Thermal radiation range within.
In the present embodiment, the first fuse is also provided with the thermal radiation range of battery, first fuse (
One fuse element 2) it can be disconnected when battery battery core temperature is too high.So as to be failed in the overvoltage protection element 1 of charging circuit
When, the first fuse also can be to disconnecting battery major loop in battery excess temperature, so as to protect battery.
Referring to Fig. 1, in one embodiment, battery battery core can be provided with multiple, and the first fuse element 2 may be provided at battery electricity
Between core, such as in Fig. 1,2 battery battery cores are provided with, the first fuse element 2 is arranged between 2 battery core battery cores, so as to
The preferably temperature of detection battery battery core, can timely disconnect when battery battery core temperature is too high.
Further, second fuse element 3 is the second fuse, is connected to the overvoltage protection element 1 and institute
State on the connection circuit between second voltage end.The function of high temperature fusing can either be realized using fuse, reduces cost again.
The setting of second fuse make it that charge circuit can also be disconnected when overvoltage, protects charging equipment.
Further, the charging circuit also includes：
Preliminary filling resistance R, the first relay K1 and the second relay K2；
Wherein, the first end of the preliminary filling resistance R respectively with the positive pole of the electrokinetic cell and the second relay K2
One end is connected, and the second end of the preliminary filling resistance R is connected with the first end of the first relay K1；
The second end of the first relay K1 the second end with the second relay K2, the overvoltage protection respectively
The first end of element 1 connects with the first voltage end；
The second end of the second relay K2 also respectively with the first end of the overvoltage protection element 1 and described first
Voltage end connects.
Further, the charging circuit also includes：
3rd relay K3, the connection being connected between the negative pole of the electrokinetic cell and the overvoltage protection element 1
On circuit.
In the present embodiment, it is preferably pre-charge-relay for the first relay K1, the second relay K2 is preferably just
Pole relay, the 3rd relay K3 are preferably negative pole relay.
Preliminary filling resistance R, the first relay K1, the second relay K2 and the 3rd relay K3 in the present embodiment are used for battery
Management system BMS (BATTERY MANAGEMENT SYSTEM) controls the break-make of the relay in cell circuit, so as to protect
Battery circuit.And it is above-mentioned in circuit set and be then used for when battery management system BMS fail, it is electric can also to monitor battery both ends
Pressure, realizes the protection to battery.
The utility model embodiment additionally provides a kind of automobile, including electrokinetic cell, in addition to power electric as described above
The charging circuit in pond.
To sum up, the utility model embodiment, by setting overvoltage protection element 1, charging voltage can surpass in charging
Turned on when crossing threshold value, so as to formed the first current loop between electrokinetic cell and overvoltage protection element 1 and charge power supply with
The second current loop between overvoltage protection element 1 so that the first fuse element 2 and the second fuse element 3 melt in short circuit
It is disconnected, protect battery and charging circuit.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability includes.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (7)
- A kind of 1. charging circuit of electrokinetic cell, it is characterised in that including：For accessing the first voltage end and second voltage end of charge power supply, wherein the first voltage end and power to be charged The positive pole connection of battery, the second voltage end is connected with the negative pole of the electrokinetic cell；Overvoltage protection element, it is connected in parallel respectively with the electrokinetic cell and the charge power supply, wherein the electrokinetic cell Charging voltage when being less than preset voltage value, the overvoltage protection element is in off-state；The charging electricity of the electrokinetic cell When pressure is more than or equal to the preset voltage value, the overvoltage protection element is in conducting state, the electrokinetic cell and the mistake Connection circuit between voltage protection component forms the first current loop, the charge power supply and the overvoltage protection element it Between connection circuit formed the second current loop；First fuse element, it is arranged on first current loop；Second fuse element, it is arranged on second current loop.
- 2. the charging circuit of electrokinetic cell according to claim 1, it is characterised in that the overvoltage protection element is pressure Quick resistance.
- 3. the charging circuit of electrokinetic cell according to claim 1, it is characterised in thatFirst fuse element is the first fuse, first fuse be located at the electrokinetic cell thermal radiation range it It is interior.
- 4. the charging circuit of electrokinetic cell according to claim 1, it is characterised in thatSecond fuse element is the second fuse, is connected between the overvoltage protection element and the second voltage end Connection circuit on.
- 5. the charging circuit of electrokinetic cell according to claim 1, it is characterised in that the charging circuit also includes：Preliminary filling resistance, the first relay and the second relay；Wherein, the first end of the preliminary filling resistance connects with the positive pole of the electrokinetic cell and the first end of the second relay respectively Connect, the second end of the preliminary filling resistance is connected with the first end of first relay；Second end of first relay the second end with second relay, the of the overvoltage protection element respectively One end connects with the first voltage end；Second end of second the relay also first end with the overvoltage protection element and the first voltage end respectively Connection.
- 6. the charging circuit of electrokinetic cell according to claim 1, it is characterised in that the charging circuit also includes：3rd relay, it is connected on the connection circuit between the negative pole of the electrokinetic cell and the overvoltage protection element.
- 7. a kind of automobile, including electrokinetic cell, it is characterised in that also include the power electric as described in any one of claim 1~6 The charging circuit in pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461597.9U CN206697976U (en) | 2017-04-28 | 2017-04-28 | The charging circuit and automobile of a kind of electrokinetic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461597.9U CN206697976U (en) | 2017-04-28 | 2017-04-28 | The charging circuit and automobile of a kind of electrokinetic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206697976U true CN206697976U (en) | 2017-12-01 |
Family
ID=60446396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720461597.9U Active CN206697976U (en) | 2017-04-28 | 2017-04-28 | The charging circuit and automobile of a kind of electrokinetic cell |
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| Country | Link |
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| CN (1) | CN206697976U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659924A (en) * | 2019-02-02 | 2019-04-19 | 京东方科技集团股份有限公司 | Protect circuit and AR/VR helmet |
| CN114614202A (en) * | 2022-03-29 | 2022-06-10 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
-
2017
- 2017-04-28 CN CN201720461597.9U patent/CN206697976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659924A (en) * | 2019-02-02 | 2019-04-19 | 京东方科技集团股份有限公司 | Protect circuit and AR/VR helmet |
| CN114614202A (en) * | 2022-03-29 | 2022-06-10 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
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