CN206685887U - A kind of battery protecting circuit and automobile - Google Patents
A kind of battery protecting circuit and automobile Download PDFInfo
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- CN206685887U CN206685887U CN201720471506.XU CN201720471506U CN206685887U CN 206685887 U CN206685887 U CN 206685887U CN 201720471506 U CN201720471506 U CN 201720471506U CN 206685887 U CN206685887 U CN 206685887U
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- battery
- temperature
- power supply
- relay
- circuit
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Abstract
The utility model provides a kind of battery protecting circuit and automobile; the battery protecting circuit; power supply circuit applied to battery to be protected; battery connects and composes power supply circuit with load; the first hot melt element is provided with power supply circuit; for cutting off power supply circuit when temperature reaches the first preset temperature, wherein battery protecting circuit includes：Power supply；At least temperature switch being arranged on the battery core surface of battery, each of which temperature switch are connected in series with power supply；When the temperature on battery core surface is less than the second preset temperature, temperature switch is in off-state, and when the temperature on battery core surface is more than or equal to the second preset temperature, temperature switch is in conducting state；Heating element heater, wherein the first hot melt element is located within the thermal radiation range of heating element heater.The utility model embodiment is monitored to the temperature of battery battery core, the disconnecting circuit when battery core temperature is higher than threshold value, protects battery.
Description
Technical field
Technical field of circuit design is the utility model is related to, more particularly to a kind of battery protecting circuit and automobile.
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 a kind of battery protecting circuit and automobile, to realize
The temperature of battery battery core is monitored, the disconnecting circuit when battery core temperature is higher than threshold value, protects battery.
In order to solve the above technical problems, the utility model embodiment provides a kind of battery protecting circuit, applied to waiting to protect
The power supply circuit of the battery of shield, the battery and load connect and compose the power supply circuit, and the is provided with the power supply circuit
One hot melt element, for cutting off the power supply circuit when temperature reaches the first preset temperature, wherein the battery protecting circuit
Including：
Power supply；
At least temperature switch being arranged on the battery core surface of the battery, temperature switch described in each of which with it is described
Power supply is connected in series；When the temperature on the battery core surface is less than the second preset temperature, the temperature switch is in off-state,
When the temperature on the battery core surface is more than or equal to the second preset temperature, the temperature switch is in conducting state；
Heating element heater, it is arranged on the connection circuit that the temperature switch is connected with the power supply, the temperature is opened
When be in conducting state, the power supply is heating element heater power supply for pass, and the temp of heating element raises, wherein described the
One hot melt element is located within the thermal radiation range of the heating element heater.
Further, the first hot melt element is the first Thermal Cutoffs, the first end of first Thermal Cutoffs
It is connected with the negative pole of the battery, the second end and the load of first Thermal Cutoffs connect.
Further, the battery protecting circuit also includes：
Second hot melt element, is arranged on the connection circuit that the temperature switch is connected with the power supply, described the
Two hot melt elements are located within the thermal radiation range of the heating element heater；
Wherein, it is in off-state when the temperature of the described second hot melt element is more than or equal to three preset temperatures, works as temperature
Degree is in conducting state when being less than three preset temperature, wherein, the 3rd preset temperature is more than first preset temperature.
Further, the second hot melt element is second temperature fuse.
Further, the quantity of the temperature switch be 3, each temperature switch with the heating element heater and institute
The series connection of the second hot melt element is stated, and it is in parallel between each temperature switch.
Further, the 3rd Thermal Cutoffs is additionally provided with the power supply circuit, the 3rd Thermal Cutoffs is located at
Within the thermal radiation range of the battery.
Further, it is additionally provided with the power supply circuit：
Preliminary filling resistance, the first relay and the second relay；
Wherein, the first end of first relay respectively with the positive pole of the battery and second relay first
End connection, the second end of first relay is connected with the first end of the preliminary filling resistance；
Second end of the preliminary filling resistance connects with the second end of second relay and load respectively；
Second end of second relay also connects with load.
Further, it is provided with the power supply circuit：
3rd relay, it is connected on the connection circuit between the first hot melt element and the battery.
The utility model embodiment additionally provides a kind of automobile, including battery, in addition to battery protection as described above electricity
Road.
Compared with prior art, a kind of battery protecting circuit and automobile that the utility model embodiment provides, at least have
Following beneficial effect：
The utility model embodiment, the battery core temperature of battery is monitored by temperature switch, when battery core temperature exceedes threshold value,
Temperature switch is closed automatically, temp of heating element rise, the first hot melt element is fused, so that cell circuit disconnects, is made
Battery is in the state being stopped, and discharge and recharge stops, and reaching prevents battery various security risks caused by temperature raises.
Brief description of the drawings
Fig. 1 is the circuit diagram of the battery protecting circuit 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 battery protecting circuit, the confession applied to battery to be protected
Circuit, the battery connect and compose the power supply circuit with load, the first hot melt element 1 are provided with the power supply circuit,
For cutting off the power supply circuit when temperature reaches the first preset temperature, wherein the battery protecting circuit includes：
Power supply；
At least temperature switch 5 being arranged on the battery core surface of the battery, temperature switch 5 described in each of which and institute
Power supply is stated to be connected in series；When the temperature on the battery core surface is less than the second preset temperature, the temperature switch 5 is in disconnection shape
State, when the temperature on the battery core surface is more than or equal to the second preset temperature, the temperature switch 5 is in conducting state；
Heating element heater 2, it is arranged on the connection circuit that the temperature switch 5 is connected with the power supply, the temperature
When switch 5 is in conducting state, the power supply is that the heating element heater 2 is powered, the temperature of heating element heater 2 rise, wherein
The first hot melt element 1 is located within the thermal radiation range of the heating element heater 2.
The utility model embodiment, temperature switch 5 is arranged on to the surface of battery battery core, electricity is monitored by temperature switch 5
The battery core temperature in pond, when circuit malfunctions, when battery major loop still turns on, the temperature of battery battery core will raise,
When battery core temperature exceedes threshold value, the temperature switch 5 for being arranged on battery core surface is closed automatically, now, battery protecting circuit conducting,
The temperature of heating element heater 2 raises, and the first hot melt element 1 is fused, so that cell circuit disconnects, is in battery and is stopped
State, discharge and recharge stop, reaching prevent battery due to temperature raise caused by various security risks.
Wherein, it is preferably the power supply of 12V power supplys for the power supply in battery protecting circuit.Heating element heater 2, which is arranged on, to be leaned on
The position of nearly first hot melt element 1 so that it can to heat element fusing faster in failure, so as to protection circuit.
Wherein, the first preset temperature of the heat fusion joint of the first hot melt element 1, judge battery battery core whether failure it is second pre-
If temperature can be preset according to actual conditions.
Wherein, it is illustrated that in the two-port (diagram dotted line frame in) being connected with battery be used to connect external loading or charging dress
Put, the battery protecting circuit of the utility model embodiment can be used for connection external loading crop power supply circuit, it can also be used to connect
Charging device crop charging circuit.
In one embodiment, the first hot melt element 1 is the first Thermal Cutoffs, the of first Thermal Cutoffs
One end is connected with the negative pole of the battery, and the second end and the load of first Thermal Cutoffs connect.
In the present embodiment, can be perceived as the first hot melt element 1, Thermal Cutoffs using the first Thermal Cutoffs
The temperature of heating element heater 2 simultaneously disconnects when more than preset value, can be good at realizing it is above-mentioned in function, and cost is relatively low.
In one embodiment, the battery protecting circuit also includes：
Second hot melt element 3, is arranged on the connection circuit that the temperature switch 5 is connected with the power supply, described
Second hot melt element 3 is located within the thermal radiation range of the heating element heater 2；
Wherein, it is in off-state when the temperature of the described second hot melt element 3 is more than or equal to three preset temperatures, works as temperature
Degree is in conducting state when being less than three preset temperature, wherein, the 3rd preset temperature is more than first preset temperature.
In the above-described embodiments, when temperature switch 5 closes, the first hot melt element 1 disconnects in battery major loop, so as to protect
Cell circuit has been protected, but protection circuit is constantly in conducting state under this situation, heating element heater 2 constantly heats up, and both wastes electricity
Protection circuit can may be caused to damage again.So in the present embodiment, increase by second heats element 3 in the protection circuit, its is same
Sample is located within the thermal radiation range of heating element heater 2, and the preset temperature of its fusing is more than the default temperature of the first hot melt element 1
Degree, it can be fused after the first hot melt element 1 disconnects under the heat radiation of heating element heater 2, so as to disconnect protection circuit.
Further, the second hot melt element 3 is second temperature fuse.Height can either be realized using Thermal Cutoffs
The function of temperature fusing, reduces cost again.
With continued reference to Fig. 1, in one embodiment, the quantity of the temperature switch 5 is 3, and each temperature switch 5 is equal
Connected with the heating element heater 2 and the second hot melt element 3, and it is in parallel between each temperature switch 5.
In the present embodiment, in order to be preferably monitored to the temperature of battery battery core, three temperature switches 5 are provided with
(the first temperature switch, second temperature switch and the 3rd temperature switch), each temperature switch 5 is in parallel, and is disposed on battery
The surface of battery core, battery core can be preferably detected, situations such as especially for local heating.
It should be noted that can be according to actual conditions such as the quantity of battery battery core and sizes for the quantity of temperature switch 5
Increased and reduced.
In one embodiment, the 3rd Thermal Cutoffs 4, the 3rd Thermal Cutoffs are additionally provided with the power supply circuit
4 within the thermal radiation range of the battery.
In the present embodiment, the 3rd Thermal Cutoffs 4 is also provided with the thermal radiation range of battery, the Temperature protection
Silk can be disconnected when battery battery core temperature is too high, and also cell circuit can be turned off when protection circuit fails,
So as to protect battery.
Referring to Fig. 1, in one embodiment, battery battery core can be provided with multiple, and the 3rd Thermal Cutoffs 4 may be provided at battery
Between battery core, such as in Fig. 1, be provided with two battery battery cores, the 3rd Thermal Cutoffs 4 be arranged on two battery core battery cores it
Between, so as to preferably detect the temperature of battery battery core, can timely be disconnected when battery battery core temperature is too high.
Further, it is additionally provided with the power supply circuit：
Preliminary filling resistance R, the first relay K1 and the second relay K2；
Wherein, the first end of the first relay K1 respectively with the positive pole of the battery and the second relay K2
First end is connected, and the second end of the first relay K1 is connected with the first end of the preliminary filling resistance R；
The second end of the preliminary filling resistance R connects with the second end of the second relay K2 and load respectively；
The second end of the second relay K2 also connects with load.
Further, it is provided with the power supply circuit：
3rd relay K3, it is connected on the connection circuit between the first hot melt element 1 and the battery.
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 then be used for when battery management system BMS fails, battery battery core is monitored,
So as to can also realize the protection to battery when battery management system BMS fails.
The utility model embodiment additionally provides a kind of automobile, including battery, in addition to battery protection as described above electricity
Road.
To sum up, the utility model embodiment, the battery core temperature of battery is monitored by temperature switch 5, when battery core temperature exceedes
During threshold value, temperature switch 5 is closed automatically, the rise of the temperature of heating element heater 2, the first hot melt element 1 is fused, so that battery returns
Road disconnects, and battery is in the state being stopped, and discharge and recharge stops, and reaching prevents that battery is various caused by temperature raises
Security risk.
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 (9)
- A kind of 1. battery protecting circuit, it is characterised in that applied to the power supply circuit of battery to be protected, the battery and load The power supply circuit is connected and composed, the first hot melt element is provided with the power supply circuit, for being preset when temperature reaches first The power supply circuit is cut off during temperature, wherein the battery protecting circuit includes：Power supply；At least temperature switch being arranged on the battery core surface of the battery, temperature switch described in each of which and the power supply Power sources in series connects；When the temperature on the battery core surface is less than the second preset temperature, the temperature switch is in off-state, described When the temperature on battery core surface is more than or equal to the second preset temperature, the temperature switch is in conducting state；Heating element heater, is arranged on the connection circuit that the temperature switch is connected with the power supply, and the temperature switch is in During conducting state, the power supply is powered for the heating element heater, the temp of heating element rise, wherein first heat Molten element is located within the thermal radiation range of the heating element heater.
- 2. battery protecting circuit according to claim 1, it is characterised in thatThe first hot melt element is the first Thermal Cutoffs, the first end of first Thermal Cutoffs and bearing for the battery Pole connects, and the second end and the load of first Thermal Cutoffs connect.
- 3. battery protecting circuit according to claim 1, it is characterised in that the battery protecting circuit also includes：Second hot melt element, is arranged on the connection circuit that the temperature switch is connected with the power supply, second heat Molten element is located within the thermal radiation range of the heating element heater；Wherein, it is in off-state when the temperature of the described second hot melt element is more than or equal to three preset temperatures, when temperature is small It is in conducting state when three preset temperature, wherein, the 3rd preset temperature is more than first preset temperature.
- 4. battery protecting circuit according to claim 3, it is characterised in that the second hot melt element is protected for second temperature Dangerous silk.
- 5. battery protecting circuit according to claim 3, it is characterised in that the quantity of the temperature switch is 3, each The temperature switch is connected with the heating element heater and the second hot melt element, and between each temperature switch simultaneously Connection.
- 6. battery protecting circuit according to claim 1, it is characterised in thatThe 3rd Thermal Cutoffs is additionally provided with the power supply circuit, the 3rd Thermal Cutoffs is located at the hot spoke of the battery Within the scope of penetrating.
- 7. battery protecting circuit according to claim 1, it is characterised in that be additionally provided with the power supply circuit：Preliminary filling resistance, the first relay and the second relay；Wherein, the first end of first relay connects with the positive pole of the battery and the first end of second relay respectively Connect, the second end of first relay is connected with the first end of the preliminary filling resistance；Second end of the preliminary filling resistance connects with the second end of second relay and load respectively；Second end of second relay also connects with load.
- 8. battery protecting circuit according to claim 1, it is characterised in that be provided with the power supply circuit：3rd relay, it is connected on the connection circuit between the first hot melt element and the battery.
- 9. a kind of automobile, including battery, it is characterised in that also include the battery protection electricity as described in any one of claim 1~8 Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471506.XU CN206685887U (en) | 2017-04-28 | 2017-04-28 | A kind of battery protecting circuit and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471506.XU CN206685887U (en) | 2017-04-28 | 2017-04-28 | A kind of battery protecting circuit and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206685887U true CN206685887U (en) | 2017-11-28 |
Family
ID=60406929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720471506.XU Active CN206685887U (en) | 2017-04-28 | 2017-04-28 | A kind of battery protecting circuit and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206685887U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994561A (en) * | 2019-04-30 | 2020-04-10 | 宁德时代新能源科技股份有限公司 | Battery safety protection system and processing method |
| CN115084793A (en) * | 2021-03-11 | 2022-09-20 | 宁德新能源科技有限公司 | Protection circuit, battery, group battery and electron device of electric core |
-
2017
- 2017-04-28 CN CN201720471506.XU patent/CN206685887U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994561A (en) * | 2019-04-30 | 2020-04-10 | 宁德时代新能源科技股份有限公司 | Battery safety protection system and processing method |
| CN110994561B (en) * | 2019-04-30 | 2021-10-08 | 宁德时代新能源科技股份有限公司 | Battery safety protection system and processing method |
| CN115084793A (en) * | 2021-03-11 | 2022-09-20 | 宁德新能源科技有限公司 | Protection circuit, battery, group battery and electron device of electric core |
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