CN205103385U - A sampling circuit and vehicle for on -vehicle battery - Google Patents
A sampling circuit and vehicle for on -vehicle battery Download PDFInfo
- Publication number
- CN205103385U CN205103385U CN201520918283.8U CN201520918283U CN205103385U CN 205103385 U CN205103385 U CN 205103385U CN 201520918283 U CN201520918283 U CN 201520918283U CN 205103385 U CN205103385 U CN 205103385U
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- Prior art keywords
- vehicle battery
- protector
- sampling
- circuit
- wire harness
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Abstract
The utility model discloses a sampling circuit and vehicle for on -vehicle battery. Wherein, this sampling circuit includes: the protector, sampling pencil, protector setting are between sampling pencil and on -vehicle battery, and the sampling pencil is used for gathering the current potential of on -vehicle battery one end, monomer voltage sample unit is with sampling wiring harness connection for the voltage of on -vehicle battery is confirmed based on the current potential of sampling pencil collection. The utility model provides a current BMS voltage sample return circuit prevent the short circuit design and can't solve the technical problem of the battery short circuit that arouses owing to sampling the pencil short circuit that the sampling circuit who has improved on -vehicle battery prevents short -circuit protection's integrality and reliability.
Description
Technical field
The utility model relates to on-vehicle battery field, in particular to a kind of sample circuit for on-vehicle battery and vehicle.
Background technology
Existing vehicular energy system adopts lithium-ion battery systems usually, and lithium ion battery has lot of advantages, and as long service life, specific energy is high, combination is more flexible.But because lithium ion battery energy is comparatively large, the reasons such as less stable are higher to the requirement of the secure contexts such as monitoring, management.Therefore battery management system (BatterManagementSystem, i.e. BMS) is caused in electric automobile in occupation of very important position.
At present; BMS voltage sample loop against short-circuit design proposal mainly designs against short-circuit measure on BMS circuit board; in battery management system 10 ' as shown in Figure 1; each sampling wire harness 13 ' is connected with monomer voltage sampling unit 12 ' by a protector 11 ', and each sampling wire harness 13 ' is directly connected with on-vehicle battery 14 '.
When above-mentioned scheme just considers BMS inner monomer voltage sampling circuit short circuit, utilize the short circuit line defencive function of protector, off voltage sampling circuit, prevent the further deterioration of voltage sample loop short-circuit conditions and cause the generation of fire.If the short circuit of sampling wire harness, the generation of battery short circuit situation still cannot be avoided.
The problem of the battery short circuit caused due to sampling wire harness short circuit cannot be solved for existing BMS voltage sample loop against short-circuit design proposal, not yet propose effective solution at present.
Utility model content
The utility model embodiment provides a kind of sample circuit for on-vehicle battery and vehicle, at least to solve the technical matters that existing BMS voltage sample loop against short-circuit design proposal cannot solve the battery short circuit caused due to sampling wire harness short circuit.
According to an aspect of the utility model embodiment, provide a kind of sample circuit for on-vehicle battery, this sample circuit comprises: protector; Sampling wire harness, described protector is arranged between described sampling wire harness and on-vehicle battery, and described sampling wire harness is for gathering the electromotive force of described on-vehicle battery one end; Monomer voltage sampling unit, is connected with described sampling wire harness, for determining the voltage of described on-vehicle battery based on the electromotive force of described sampling wire harness collection.
Further, described protector is short-circuit protector.
Further, described short-circuit protector comprises thermistor.
Further, described short-circuit protector comprises fuse.
Further, described sampling wire harness is N number of, and described protector is described N number of, and described sampling wire harness and described protector connect one to one, and wherein, N is natural number.
Further, described on-vehicle battery is N-1, and first protector is connected with the positive pole of first on-vehicle battery; I-th protector is connected with the negative pole of the i-th-1 on-vehicle battery, and described i-th protector is connected with the positive pole of i-th on-vehicle battery; N number of protector is connected with the negative pole of N-1 on-vehicle battery, and wherein, 1<i<N, i are natural number.
Further, protector is provided with between described monomer voltage sampling unit and described sampling wire harness.
Further, described protector is thermistor or fuse.
According to the another aspect of the utility model embodiment, additionally provide a kind of vehicle, this vehicle comprises: the above-mentioned sample circuit for on-vehicle battery.
In the utility model embodiment; between root protector being arranged on sampling wire harness and on-vehicle battery; like this when sampling wire harness short circuit; the connection of sampling wire harness and on-vehicle battery can be disconnected by protector; the short circuit of sampling wire harness is avoided to cause the situation of on-vehicle battery short circuit to occur; solve the technical matters that existing BMS voltage sample loop against short-circuit design proposal cannot solve the battery short circuit caused due to sampling wire harness short circuit, thus improve integrality and the reliability of the sample circuit against short-circuit protection of on-vehicle battery.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of a kind of sample circuit for on-vehicle battery according to prior art;
Fig. 2 is the schematic diagram of a kind of sample circuit for on-vehicle battery according to the utility model embodiment;
Fig. 3 is a kind of optional schematic diagram for the sample circuit of on-vehicle battery according to the utility model embodiment.
Embodiment
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in instructions of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain the process of a series of unit, system, product or equipment is not necessarily limited to those unit of clearly listing, but can comprise clearly do not list or for intrinsic other unit of these processes, product or equipment.
Embodiment 1
According to the utility model embodiment, provide a kind of sample circuit for on-vehicle battery.
Fig. 2 is the schematic diagram of a kind of sample circuit for on-vehicle battery according to the utility model embodiment, and as shown in Figure 2, this sample circuit comprises: protector 11, sampling wire harness 13 and monomer voltage sampling unit 12.
Wherein, protector 11.
Sampling wire harness 13, protector is arranged between sampling wire harness and on-vehicle battery 14, and sampling wire harness is for gathering the electromotive force of on-vehicle battery one end.
Monomer voltage sampling unit 12, is connected with sampling wire harness, for the voltage of the electromotive force determination on-vehicle battery based on the collection of sampling wire harness.
Pass through the utility model; between root protector being arranged on sampling wire harness and on-vehicle battery; like this when sampling wire harness short circuit; the connection of sampling wire harness and on-vehicle battery can be disconnected by protector; the short circuit of sampling wire harness is avoided to cause the situation of on-vehicle battery short circuit to occur; solve the problem that existing BMS voltage sample loop against short-circuit design proposal cannot solve the battery short circuit caused due to sampling wire harness short circuit, thus improve integrality and the reliability of the sample circuit against short-circuit protection of on-vehicle battery.
Above-mentioned Fig. 2 schematically illustrates the annexation of each components and parts in the sample circuit for on-vehicle battery.
Particularly, monomer voltage sampling unit gathers positive electrode potential and the negative pole electromotive force of each on-vehicle battery by sampling wire harness, can be obtained the voltage of each on-vehicle battery by the electric potential difference calculating positive electrode potential and negative pole electromotive force.
In above-described embodiment; the quantity of protector can be identical with the quantity of sampling wire harness; a protector can be set between each sampling wire harness and on-vehicle battery; when to sample, wire harness breaks down; the connection of timely disconnection sample circuit and on-vehicle battery, simplicity of design, the implementation of the sample circuit of on-vehicle battery are convenient.
Above-mentioned protector can be short-circuit protector.
Alternatively, above-mentioned short-circuit protector can comprise thermistor.
Alternatively, above-mentioned thermistor can be high molecular polymer positive-temperature-coefficient thermistor (PolymericPositiveTemperatureCoefficient, i.e. PPTC).PPTC device possesses and insures silky short circuit current limitation defencive function, and can, temperature excessive at current surge play a protective role to circuit time too high.When using PPTC device, be connected in series in circuit, when circuit normally works, its resistance is very little, and loss is also very little, does not affect circuit and normally works; But if there is overcurrent (as short circuit) to occur in circuit, the temperature of PPTC device raises, then its resistance sharply raises, and reaches the effect of Limited Current, avoids damaging the components and parts in circuit thereupon.After failture evacuation in circuit, the temperature of PPTC device declines automatically, makes it return to low resistive state.Because PPTC device has self-recovering function, therefore use PPTC device can obtain better effect in circuit.
Alternatively, above-mentioned short-circuit protector also can comprise fuse.
By above-described embodiment of the present utility model; between the root and on-vehicle battery of sampling wire harness; add fuse or PPTC device; even if sample like this, wire harness short circuit also can not cause battery short circuit; can effectively prevent the situation of the battery short circuit caused due to sampling wire harness short circuit from occurring, to improve integrality and the reliability of the sample circuit against short-circuit protection of on-vehicle battery.
According to above-described embodiment of the present utility model, sampling wire harness can be N number of, and protector can be N number of, and sampling wire harness and protector connect one to one, and wherein, N is natural number.
Alternatively, on-vehicle battery can be N-1, and first protector is connected with the positive pole of first on-vehicle battery; I-th protector is connected with the negative pole of the i-th-1 on-vehicle battery, and i-th protector is connected with the positive pole of i-th on-vehicle battery; N number of protector is connected with the negative pole of N-1 on-vehicle battery, and wherein, 1<i<N, i are natural number.
Further, be provided with protector between monomer voltage sampling unit and sampling wire harness, wherein, protector can be thermistor or fuse.
In battery management system 10 as shown in Figure 3; monomer voltage sampling unit 12 can be connected with five wire harness 13 of sampling; these five sampling wire harness, for gathering the voltage of four on-vehicle batteries 14, are provided with a protector 11 between this monomer voltage sampling unit 12 and each sampling wire harness.It should be noted that, in this embodiment, between each sampling wire harness and corresponding on-vehicle battery, be also provided with a protector 11.
In embodiment as shown in Figure 3, on-vehicle battery can be 4, is provided with 1 protector in the middle of the positive pole of the 1st sampling wire harness and the 1st on-vehicle battery, and the 1st sampling wire harness gathers the positive electrode potential of the 1st on-vehicle battery, 2nd sampling wire harness is connected with the negative pole of the 1st on-vehicle battery and the positive pole of the 2nd on-vehicle battery respectively, a protector is provided with between 2nd sampling wire harness and the connected node of the negative pole of the 1st on-vehicle battery and the positive pole of the 2nd on-vehicle battery, 2nd sampling wire harness gathers the negative pole electromotive force of the 1st on-vehicle battery and the positive electrode potential of the 2nd on-vehicle battery, the like, 3rd gathers the negative pole electromotive force of the 2nd on-vehicle battery and the positive electrode potential of the 3rd on-vehicle battery, the electromotive force of negative pole of the 4th collection the 3rd on-vehicle battery and the positive electrode potential of the 4th on-vehicle battery, 5th sampling wire harness gathers the negative pole electromotive force of the 4th on-vehicle battery.
After the positive electrode potential collecting each on-vehicle battery and negative pole electromotive force, monomer voltage sampling unit calculates the positive electrode potential of each on-vehicle battery and the electric potential difference of negative pole electromotive force, obtains the voltage of each on-vehicle battery.
In the above-described embodiments; between monomer voltage sampling unit and each sampling wire harness, be not only provided with protector (can be PPTC device or fuse); and protector is added between the root and on-vehicle battery of each sampling wire harness; utilize the short circuit line defencive function of protector; if the monomer voltage sampling unit of BMS inside and/or sampling wire harness are short-circuited; all sampling circuit can be disconnected; avoid on-vehicle battery short circuit, and the generation causing fire because of sampling circuit short circuit can be prevented.
By above-described embodiment of the present utility model, protector is set between the root and on-vehicle battery of sampling wire harness, effectively can avoids due to sampling wire harness short circuit and cause the situation of battery short circuit to occur.
Embodiment 2
According to the utility model embodiment, additionally provide a kind of embodiment of vehicle, this vehicle comprises the sample circuit for on-vehicle battery of above-described embodiment.
Pass through the utility model; between root protector being arranged on sampling wire harness and on-vehicle battery; like this when sampling wire harness short circuit; the connection of sampling wire harness and on-vehicle battery can be disconnected by protector; the short circuit of sampling wire harness is avoided to cause the situation of on-vehicle battery short circuit to occur; solve the problem that existing BMS voltage sample loop against short-circuit design proposal cannot solve the battery short circuit caused due to sampling wire harness short circuit, thus improve integrality and the reliability of the sample circuit against short-circuit protection of on-vehicle battery.
Particularly, monomer voltage sampling unit gathers positive electrode potential and the negative pole electromotive force of each on-vehicle battery by sampling wire harness, can be obtained the voltage of each on-vehicle battery by the electric potential difference calculating positive electrode potential and negative pole electromotive force.
In above-described embodiment; the quantity of protector can be identical with the quantity of sampling wire harness; a protector can be set between each sampling wire harness and on-vehicle battery; when to sample, wire harness breaks down; the connection of timely disconnection sample circuit and on-vehicle battery, simplicity of design, the implementation of the sample circuit of on-vehicle battery are convenient.
Above-mentioned protector is short-circuit protector, and alternatively, above-mentioned short-circuit protector can comprise thermistor or fuse.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
The claimed circuit of the utility model and each assembly forming this circuit be all a kind of have determine shape, structure and occupy the entity products of certain space.As with the electron devices such as door, not gate, resistance and amplifier.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. for a sample circuit for on-vehicle battery, it is characterized in that, comprising:
Protector;
Sampling wire harness, described protector is arranged between described sampling wire harness and on-vehicle battery, and described sampling wire harness is for gathering the electromotive force of described on-vehicle battery one end;
Monomer voltage sampling unit, is connected with described sampling wire harness, for determining the voltage of described on-vehicle battery based on the electromotive force of described sampling wire harness collection.
2. sample circuit according to claim 1, is characterized in that, described protector is short-circuit protector.
3. sample circuit according to claim 2, is characterized in that, described short-circuit protector comprises thermistor.
4. sample circuit according to claim 2, is characterized in that, described short-circuit protector comprises fuse.
5. sample circuit according to claim 1, is characterized in that, described sampling wire harness is N number of, and described protector is described N number of, and described sampling wire harness and described protector connect one to one, and wherein, N is natural number.
6. sample circuit according to claim 5, is characterized in that, described on-vehicle battery is N-1, and first protector is connected with the positive pole of first on-vehicle battery; I-th protector is connected with the negative pole of the i-th-1 on-vehicle battery, and described i-th protector is connected with the positive pole of i-th on-vehicle battery; N number of protector is connected with the negative pole of N-1 on-vehicle battery, and wherein, 1<i<N, i are natural number.
7. sample circuit according to claim 1, is characterized in that, is provided with protector between described monomer voltage sampling unit and described sampling wire harness.
8. sample circuit according to claim 7, is characterized in that, described protector is thermistor or fuse.
9. a vehicle, is characterized in that, comprises the sample circuit for on-vehicle battery in claim 1 to 8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918283.8U CN205103385U (en) | 2015-11-17 | 2015-11-17 | A sampling circuit and vehicle for on -vehicle battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918283.8U CN205103385U (en) | 2015-11-17 | 2015-11-17 | A sampling circuit and vehicle for on -vehicle battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205103385U true CN205103385U (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520918283.8U Expired - Fee Related CN205103385U (en) | 2015-11-17 | 2015-11-17 | A sampling circuit and vehicle for on -vehicle battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205103385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654140A (en) * | 2016-10-08 | 2017-05-10 | 郑州宇通客车股份有限公司 | Sampling wire, sampling wire harness, battery management system and automobile |
-
2015
- 2015-11-17 CN CN201520918283.8U patent/CN205103385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654140A (en) * | 2016-10-08 | 2017-05-10 | 郑州宇通客车股份有限公司 | Sampling wire, sampling wire harness, battery management system and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20211117 |